WO2023189697A1 - Lubricant composition - Google Patents
Lubricant composition Download PDFInfo
- Publication number
- WO2023189697A1 WO2023189697A1 PCT/JP2023/010506 JP2023010506W WO2023189697A1 WO 2023189697 A1 WO2023189697 A1 WO 2023189697A1 JP 2023010506 W JP2023010506 W JP 2023010506W WO 2023189697 A1 WO2023189697 A1 WO 2023189697A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mass
- group
- lubricating oil
- oil composition
- component
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims abstract description 202
- 239000000314 lubricant Substances 0.000 title abstract description 3
- -1 amine compound Chemical class 0.000 claims abstract description 83
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 75
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 0.000 claims abstract description 15
- 239000002199 base oil Substances 0.000 claims abstract description 14
- 239000010687 lubricating oil Substances 0.000 claims description 203
- 125000004432 carbon atom Chemical group C* 0.000 claims description 68
- 238000002485 combustion reaction Methods 0.000 claims description 34
- 150000001875 compounds Chemical class 0.000 claims description 28
- 239000003963 antioxidant agent Substances 0.000 claims description 18
- 125000003342 alkenyl group Chemical group 0.000 claims description 16
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims description 14
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 13
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 13
- KHYKFSXXGRUKRE-UHFFFAOYSA-J molybdenum(4+) tetracarbamodithioate Chemical compound C(N)([S-])=S.[Mo+4].C(N)([S-])=S.C(N)([S-])=S.C(N)([S-])=S KHYKFSXXGRUKRE-UHFFFAOYSA-J 0.000 claims description 11
- 230000003078 antioxidant effect Effects 0.000 claims description 10
- 125000004434 sulfur atom Chemical group 0.000 claims description 10
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 9
- 125000003545 alkoxy group Chemical group 0.000 claims description 8
- 125000003118 aryl group Chemical group 0.000 claims description 8
- 229910052796 boron Inorganic materials 0.000 claims description 8
- 230000001050 lubricating effect Effects 0.000 claims description 8
- 150000001412 amines Chemical class 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 229960002317 succinimide Drugs 0.000 claims description 6
- 125000002947 alkylene group Chemical group 0.000 claims description 5
- 239000002530 phenolic antioxidant Substances 0.000 claims description 5
- 125000000732 arylene group Chemical group 0.000 claims description 4
- 125000002993 cycloalkylene group Chemical group 0.000 claims description 4
- 125000003277 amino group Chemical group 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 36
- 229910052802 copper Inorganic materials 0.000 description 36
- 239000010949 copper Substances 0.000 description 36
- 238000010828 elution Methods 0.000 description 27
- 239000003921 oil Substances 0.000 description 22
- 238000012360 testing method Methods 0.000 description 19
- 239000003795 chemical substances by application Substances 0.000 description 18
- 230000001976 improved effect Effects 0.000 description 15
- 229910052751 metal Inorganic materials 0.000 description 15
- 239000002184 metal Substances 0.000 description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 14
- 239000000654 additive Substances 0.000 description 12
- 125000004433 nitrogen atom Chemical group N* 0.000 description 12
- 239000003599 detergent Substances 0.000 description 11
- 239000011701 zinc Substances 0.000 description 11
- 230000003749 cleanliness Effects 0.000 description 10
- 150000002430 hydrocarbons Chemical group 0.000 description 10
- 229910052725 zinc Inorganic materials 0.000 description 10
- 239000002518 antifoaming agent Substances 0.000 description 9
- 235000014113 dietary fatty acids Nutrition 0.000 description 9
- 239000000194 fatty acid Substances 0.000 description 9
- 229930195729 fatty acid Natural products 0.000 description 9
- XYRMLECORMNZEY-UHFFFAOYSA-B [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S Chemical compound [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S XYRMLECORMNZEY-UHFFFAOYSA-B 0.000 description 8
- 239000002253 acid Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 7
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 6
- 239000002585 base Substances 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 239000002480 mineral oil Substances 0.000 description 6
- 239000003607 modifier Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 239000005077 polysulfide Substances 0.000 description 6
- 229920001021 polysulfide Polymers 0.000 description 6
- 150000008117 polysulfides Polymers 0.000 description 6
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 5
- 150000004665 fatty acids Chemical class 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 239000006078 metal deactivator Substances 0.000 description 5
- 125000004437 phosphorous atom Chemical group 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 239000004711 α-olefin Substances 0.000 description 5
- 125000001931 aliphatic group Chemical group 0.000 description 4
- 125000004429 atom Chemical group 0.000 description 4
- AVVIDTZRJBSXML-UHFFFAOYSA-L calcium;2-carboxyphenolate;dihydrate Chemical compound O.O.[Ca+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O AVVIDTZRJBSXML-UHFFFAOYSA-L 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 230000000994 depressogenic effect Effects 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 3
- DKCPKDPYUFEZCP-UHFFFAOYSA-N 2,6-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O DKCPKDPYUFEZCP-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 125000003710 aryl alkyl group Chemical group 0.000 description 3
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 150000003949 imides Chemical group 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 229920000193 polymethacrylate Polymers 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 101100208720 Homo sapiens USP5 gene Proteins 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 102100021017 Ubiquitin carboxyl-terminal hydrolase 5 Human genes 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 125000006267 biphenyl group Chemical group 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
- 125000003493 decenyl group Chemical group [H]C([*])=C([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 239000000539 dimer Substances 0.000 description 2
- 125000005066 dodecenyl group Chemical group C(=CCCCCCCCCCC)* 0.000 description 2
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical class [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000001624 naphthyl group Chemical group 0.000 description 2
- YCWSUKQGVSGXJO-NTUHNPAUSA-N nifuroxazide Chemical group C1=CC(O)=CC=C1C(=O)N\N=C\C1=CC=C([N+]([O-])=O)O1 YCWSUKQGVSGXJO-NTUHNPAUSA-N 0.000 description 2
- 125000005187 nonenyl group Chemical group C(=CCCCCCCC)* 0.000 description 2
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 description 2
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 125000000286 phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 2
- 150000003014 phosphoric acid esters Chemical class 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- 239000001384 succinic acid Substances 0.000 description 2
- 150000003464 sulfur compounds Chemical class 0.000 description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 125000005063 tetradecenyl group Chemical group C(=CCCCCCCCCCCCC)* 0.000 description 2
- 150000003580 thiophosphoric acid esters Chemical class 0.000 description 2
- 125000005040 tridecenyl group Chemical group C(=CCCCCCCCCCCC)* 0.000 description 2
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XVKKTGPETSQMSD-UHFFFAOYSA-N (2,2,6,6-tetramethylpiperidin-4-yl) dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC1CC(C)(C)NC(C)(C)C1 XVKKTGPETSQMSD-UHFFFAOYSA-N 0.000 description 1
- ALSTYHKOOCGGFT-KTKRTIGZSA-N (9Z)-octadecen-1-ol Chemical compound CCCCCCCC\C=C/CCCCCCCCO ALSTYHKOOCGGFT-KTKRTIGZSA-N 0.000 description 1
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- OBDUMNZXAIUUTH-HWKANZROSA-N (e)-tetradec-2-ene Chemical group CCCCCCCCCCC\C=C\C OBDUMNZXAIUUTH-HWKANZROSA-N 0.000 description 1
- QGLWBTPVKHMVHM-KTKRTIGZSA-N (z)-octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCN QGLWBTPVKHMVHM-KTKRTIGZSA-N 0.000 description 1
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical group CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 1
- RZRNAYUHWVFMIP-KTKRTIGZSA-N 1-oleoylglycerol Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(O)CO RZRNAYUHWVFMIP-KTKRTIGZSA-N 0.000 description 1
- QVXGKJYMVLJYCL-UHFFFAOYSA-N 2,3-di(nonyl)-N-phenylaniline Chemical compound C(CCCCCCCC)C=1C(=C(C=CC1)NC1=CC=CC=C1)CCCCCCCCC QVXGKJYMVLJYCL-UHFFFAOYSA-N 0.000 description 1
- 125000004493 2-methylbut-1-yl group Chemical group CC(C*)CC 0.000 description 1
- 125000005916 2-methylpentyl group Chemical group 0.000 description 1
- GPNYZBKIGXGYNU-UHFFFAOYSA-N 2-tert-butyl-6-[(3-tert-butyl-5-ethyl-2-hydroxyphenyl)methyl]-4-ethylphenol Chemical compound CC(C)(C)C1=CC(CC)=CC(CC=2C(=C(C=C(CC)C=2)C(C)(C)C)O)=C1O GPNYZBKIGXGYNU-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- 125000003542 3-methylbutan-2-yl group Chemical group [H]C([H])([H])C([H])(*)C([H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000005917 3-methylpentyl group Chemical group 0.000 description 1
- MDWVSAYEQPLWMX-UHFFFAOYSA-N 4,4'-Methylenebis(2,6-di-tert-butylphenol) Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 MDWVSAYEQPLWMX-UHFFFAOYSA-N 0.000 description 1
- NBPOOCGXISZKSX-UHFFFAOYSA-N 6-methylheptyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)CCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NBPOOCGXISZKSX-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Chemical class 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000005073 adamantyl group Chemical group C12(CC3CC(CC(C1)C3)C2)* 0.000 description 1
- 125000005571 adamantylene group Chemical group 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- 125000002178 anthracenyl group Chemical group C1(=CC=CC2=CC3=CC=CC=C3C=C12)* 0.000 description 1
- 125000004653 anthracenylene group Chemical group 0.000 description 1
- 125000005428 anthryl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C(*)=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 125000003354 benzotriazolyl group Chemical class N1N=NC2=C1C=CC=C2* 0.000 description 1
- 125000002529 biphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C12)* 0.000 description 1
- 150000001639 boron compounds Chemical class 0.000 description 1
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 1
- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- ZMRQTIAUOLVKOX-UHFFFAOYSA-L calcium;diphenoxide Chemical compound [Ca+2].[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1 ZMRQTIAUOLVKOX-UHFFFAOYSA-L 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 150000005676 cyclic carbonates Chemical class 0.000 description 1
- 150000001923 cyclic compounds Chemical class 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000004976 cyclobutylene group Chemical group 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000004977 cycloheptylene group Chemical group 0.000 description 1
- 125000004956 cyclohexylene group Chemical group 0.000 description 1
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 125000004978 cyclooctylene group Chemical group 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000004979 cyclopentylene group Chemical group 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 125000004980 cyclopropylene group Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 125000006612 decyloxy group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 125000005982 diphenylmethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- ILRSCQWREDREME-UHFFFAOYSA-N dodecanamide Chemical compound CCCCCCCCCCCC(N)=O ILRSCQWREDREME-UHFFFAOYSA-N 0.000 description 1
- 239000010696 ester oil Substances 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 125000005446 heptyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 125000006038 hexenyl group Chemical group 0.000 description 1
- 125000003707 hexyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000002510 isobutoxy group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])O* 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 125000002960 margaryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 1
- 150000002763 monocarboxylic acids Chemical class 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 125000006606 n-butoxy group Chemical group 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003506 n-propoxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000004957 naphthylene group Chemical group 0.000 description 1
- 125000004998 naphthylethyl group Chemical group C1(=CC=CC2=CC=CC=C12)CC* 0.000 description 1
- 125000004923 naphthylmethyl group Chemical group C1(=CC=CC2=CC=CC=C12)C* 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 125000006611 nonyloxy group Chemical group 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 125000005064 octadecenyl group Chemical group C(=CCCCCCCCCCCCCCCCC)* 0.000 description 1
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
- 125000005447 octyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 229940055577 oleyl alcohol Drugs 0.000 description 1
- XMLQWXUVTXCDDL-UHFFFAOYSA-N oleyl alcohol Natural products CCCCCCC=CCCCCCCCCCCO XMLQWXUVTXCDDL-UHFFFAOYSA-N 0.000 description 1
- 125000001117 oleyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 125000003538 pentan-3-yl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 1
- 125000004115 pentoxy group Chemical group [*]OC([H])([H])C([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 125000005561 phenanthryl group Chemical group 0.000 description 1
- 125000005562 phenanthrylene group Chemical group 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 150000008301 phosphite esters Chemical class 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- DOIRQSBPFJWKBE-UHFFFAOYSA-N phthalic acid di-n-butyl ester Natural products CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- WBHHMMIMDMUBKC-XLNAKTSKSA-N ricinelaidic acid Chemical compound CCCCCC[C@@H](O)C\C=C\CCCCCCCC(O)=O WBHHMMIMDMUBKC-XLNAKTSKSA-N 0.000 description 1
- 229960003656 ricinoleic acid Drugs 0.000 description 1
- FEUQNCSVHBHROZ-UHFFFAOYSA-N ricinoleic acid Natural products CCCCCCC(O[Si](C)(C)C)CC=CCCCCCCCC(=O)OC FEUQNCSVHBHROZ-UHFFFAOYSA-N 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 125000003548 sec-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- JDVPQXZIJDEHAN-UHFFFAOYSA-N succinamic acid Chemical compound NC(=O)CCC(O)=O JDVPQXZIJDEHAN-UHFFFAOYSA-N 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 1
- 125000006836 terphenylene group Chemical group 0.000 description 1
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 125000005065 undecenyl group Chemical group C(=CCCCCCCCCC)* 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/04—Hydroxy compounds
- C10M129/10—Hydroxy compounds having hydroxy groups bound to a carbon atom of a six-membered aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M133/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/04—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M133/12—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to a carbon atom of a six-membered aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/16—Amides; Imides
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/12—Thio-acids; Thiocyanates; Derivatives thereof
- C10M135/14—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond
- C10M135/18—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
- C10M137/04—Phosphate esters
- C10M137/10—Thio derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M139/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing atoms of elements not provided for in groups C10M127/00 - C10M137/00
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
Definitions
- the present invention relates to a lubricating oil composition, an internal combustion engine filled with the lubricating oil composition, and a method of using the lubricating oil composition.
- Patent Document 1 discloses that a 100N hydrotreated mineral oil contains a hindered amine compound, an amine antioxidant, a metal detergent, and an organic zinc dithiophosphate, and the hindered amine compound and the amine antioxidant are mixed in a predetermined ratio.
- a lubricating oil composition for an internal combustion engine of a hybrid vehicle comprising:
- a lubricating oil composition that has an improved effect of suppressing copper elution and can be suitably used in an internal combustion engine of a hybrid system having an internal combustion engine and an electric motor as power sources.
- a lubricating oil composition containing a hindered amine compound and an organic zinc dithiophosphate having at least one primary alkyl group together with a base oil I found a solution.
- the present invention discloses the following aspects.
- An internal combustion engine installed in a hybrid system filled with the lubricating oil composition according to [1] above.
- a method for lubricating an internal combustion engine in which the lubricating oil composition according to [1] above is applied to an internal combustion engine installed in a hybrid system.
- the lubricating oil composition of a preferred embodiment of the present invention has an excellent effect of suppressing copper elution and can maintain good long-drain properties over a long period of time. Furthermore, the lubricating oil composition according to a more preferred embodiment of the present invention has an effect of suppressing copper elution and is excellent in high-temperature cleanliness. Since it has such characteristics, the lubricating oil composition of one embodiment of the present invention can be suitably used for lubricating an internal combustion engine of a hybrid system.
- the performance showing the effect of suppressing copper elution may be expressed as copper elution resistance.
- the upper and lower limits can be arbitrarily combined.
- a numerical range is described as "preferably 30 to 100, more preferably 40 to 80"
- the range of "30 to 80” and the range of "40 to 100” are also described in this specification. Included in the specified numerical range.
- the description "60 to 100” means a range of "60 or more (60 or more than 60) and 100 or less (100 or less than 100)". do.
- the numerical range from the lower limit value to the upper limit value can be defined by appropriately selecting from each option and combining them arbitrarily.
- a plurality of the various requirements described as preferred embodiments described herein can be combined.
- kinematic viscosity and viscosity index mean values measured and calculated in accordance with JIS K2283:2000.
- the contents of alkali metals, alkaline earth metals, zinc atoms (Zn), molybdenum atoms (Mo), phosphorus atoms (P) and boron atoms (B) were measured in accordance with JPI-5S-38-92. means value.
- the nitrogen atom (N) content means a value measured in accordance with JIS K2609:1998.
- the base number is specified in 7. of JIS K2501 "Petroleum products and lubricating oils - Neutralization number test method". It means the base number measured by the hydrochloric acid method according to .
- composition of lubricating oil composition contains a base oil (A), a hindered amine compound (B), and an organic zinc dithiophosphate (C) having at least one primary alkyl group.
- the internal combustion engine of a hybrid vehicle is equipped with an electric motor as well as an internal combustion engine. Compared to the internal combustion engine of a conventional vehicle, the internal combustion engine of a hybrid vehicle is stopped for a longer period of time even when the vehicle is in use, and condensation can form inside the crankcase. Easy to occur. Therefore, lubricating oil compositions used in hybrid systems such as hybrid vehicles are likely to contain moisture, and this moisture tends to cause a decline in long-drain properties. Incidentally, alloys containing copper are sometimes used in various members constituting internal combustion engines. According to studies conducted by the present inventors, it has been found that when copper from alloys constituting various members is eluted into a lubricating oil composition, corrosive wear may occur.
- the lubricating oil composition of one embodiment of the present invention may further contain molybdenum dithiocarbamate (D).
- the lubricating oil composition of one embodiment of the present invention may further contain an antioxidant (E) that does not fall under component (B).
- the lubricating oil composition of one embodiment of the present invention may further contain an imide compound (F).
- the lubricating oil composition of one embodiment of the present invention may further contain a metal-based detergent (G).
- the lubricating oil composition of one embodiment of the present invention may further contain other lubricating oil additives other than the above-mentioned components (B) to (G) within a range that does not impair the effects of the present invention.
- the total content of components (A), (B), and (C) is preferably 50% by mass based on the total amount (100% by mass) of the lubricating oil composition. More preferably 60% by mass or more, still more preferably 65% by mass or more, even more preferably 70% by mass or more, particularly preferably 75% by mass or more, and 100% by mass or less, 99.99% by mass or less , 99.90% by mass or less, 99.50% by mass or less, 99.0% by mass or less, 98.0% by mass or less, 97.0% by mass or less, 95.0% by mass or less, 92.0% by mass or less, Alternatively, it may be 91.0% by mass or less.
- the total content of components (A), (B), (C), (D), (E), (F), and (G) is Based on the total amount (100% by mass) of the product, preferably 60% by mass or more, more preferably 65% by mass or more, even more preferably 70% by mass or more, even more preferably 75% by mass or more, particularly preferably 80% by mass or more.
- the content may also be 100% by mass or less, 99.99% by mass or less, 99.90% by mass or less, 99.50% by mass or less, or 99.0% by mass or less.
- the base oil used as component (A) may be one or more selected from mineral oils and synthetic oils.
- Mineral oils include, for example, atmospheric residual oils obtained by atmospheric distillation of crude oils such as paraffinic crude oils, intermediate crude oils, and naphthenic crude oils; and distillate oils obtained by vacuum distillation of these atmospheric residual oils. Refined oil obtained by subjecting the distillate to one or more refining treatments such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, and hydrorefining; and the like.
- Synthetic oils include, for example, polyolefins such as ⁇ -olefin homopolymers or ⁇ -olefin copolymers (for example, ⁇ -olefin copolymers having 8 to 14 carbon atoms such as ethylene- ⁇ -olefin copolymers).
- ⁇ -olefins polyolefins
- isoparaffins polyalkylene glycols
- ester oils such as polyol esters, dibasic acid esters, and phosphoric acid esters
- ether oils such as polyphenyl ethers; alkylbenzenes; alkylnaphthalenes
- Examples include synthetic oil (GTL) obtained by isomerizing manufactured wax (GTL wax (Gas To Liquids WAX)).
- Component (A) used in one embodiment of the present invention is preferably one or more selected from mineral oils and synthetic oils classified into Group II and Group III of the API (American Petroleum Institute) base oil category.
- the kinematic viscosity at 40°C of component (A) used in one aspect of the present invention is preferably 3.0 to 120 mm 2 /s, more preferably 3.5 to 100 mm 2 /s, and still more preferably 4.0 to 70 mm. 2 /s, more preferably 4.5 to 50 mm 2 /s, particularly preferably 5.0 to 30 mm 2 /s.
- the viscosity index of component (A) used in one aspect of the present invention is preferably 70 or more, more preferably 90 or more, even more preferably 100 or more, even more preferably 110 or more, particularly preferably 120 or more.
- the kinematic viscosity and viscosity index of the mixed oil are within the above ranges.
- the content of component (A) is preferably 40% by mass or more, more preferably 50% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. , more preferably 60% by mass or more, even more preferably 65% by mass or more, particularly preferably 70% by mass or more, furthermore, it may be 75% by mass or more, or 80% by mass or more, and 99.4% by mass % or less, 99.0 mass% or less, 97.0 mass% or less, 95.0 mass% or less, 92.0 mass% or less, or 90.0 mass% or less.
- the lubricating oil composition of one embodiment of the present invention contains a hindered amine compound as component (B). By containing component (B), a lubricating oil composition with improved long drain properties can be obtained.
- Component (B) used in one aspect of the present invention may be used alone or in combination of two or more.
- the hindered amine compound used as component (B) may be any compound containing a structure represented by the following formula (b-0).
- *1 and *2 indicate bonding positions with other atoms.
- Component (B) used in one embodiment of the present invention is 1 selected from a compound (B1) represented by the following general formula (b-1) and a compound (B2) represented by the following general formula (b-2). It is preferable to include more than one species.
- R b1 is each independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms.
- R b2 is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 18 ring carbon atoms, an aryl group having 6 to 18 ring carbon atoms, or a hydroxyl group.
- R b3 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms).
- Z is an alkylene group having 1 to 20 carbon atoms, a cycloalkylene group having 3 to 18 ring carbon atoms, an arylene group having 6 to 18 ring carbon atoms, an oxygen atom, or a sulfur atom. , or a group represented by -O-CO-(CH 2 ) n -CO-O- (n is an integer of 1 to 20).
- Examples of the alkyl group that can be selected as R b1 include methyl group, ethyl group, propyl group (n-propyl group, isopropyl group), butyl group (n-butyl group, s-butyl group, t-butyl group). , isobutyl group), pentyl group, hexyl group, 2-ethylhexyl group, heptyl group, octyl group, nonyl group, decyl group, etc.
- the alkyl group may be a straight-chain alkyl group or a branched-chain alkyl group.
- the number of carbon atoms in the alkyl group that can be selected as R b1 is preferably 1 to 10, more preferably 1 to 6, and still more preferably 1 to 3.
- Examples of the alkoxy group that can be selected as R b1 include methoxy group, ethoxy group, propoxy group (n-propoxy group, isopropoxy group), butoxy group (n-butoxy group, s-butoxy group, t-butoxy group). group, isobutoxy group), pentyloxy group, hexyloxy group, 2-ethylhexyloxy group, heptyloxy group, octyloxy group, nonyloxy group, decyloxy group, -(CH 2 ) n - (n is 1 -20 integers), etc.
- the alkoxy group may be a straight-chain alkoxy group or a branched-chain alkoxy group.
- the number of carbon atoms in the alkoxy group that can be selected as R b1 is preferably 1 to 10, more preferably 1 to 6, and still more preferably 1 to 3.
- Examples of the alkyl group that can be selected as R b2 include, in addition to the above-mentioned alkyl groups having 1 to 10 carbon atoms that can be selected as R b1 , for example, undecyl group, dodecyl group, tridecyl, tetradecyl group, hexadecyl group, octadecyl group. Examples include groups.
- the alkyl group may be a straight-chain alkyl group or a branched-chain alkyl group.
- the number of carbon atoms in the alkyl group that can be selected as R b2 is preferably 1 to 20, more preferably 3 to 18, still more preferably 6 to 16, even more preferably 8 to 14.
- Examples of the cycloalkyl group that can be selected as R b2 include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, and an adamantyl group.
- the number of ring carbon atoms in the cycloalkyl group that can be selected as R b2 is preferably 3 to 18, more preferably 5 to 15, and still more preferably 6 to 12.
- Examples of the aryl group that can be selected as R b2 include a phenyl group, a naphthyl group, an anthryl group, a phenanthryl group, a biphenyl group, a terphenyl group, a phenylnaphthyl group, and the like.
- the number of ring carbon atoms in the aryl group that can be selected as R b2 is preferably 6 to 18, more preferably 6 to 15, and still more preferably 6 to 12.
- alkylene group that can be selected as Z examples include methylene group, 1,1-ethylene group, 1,2-ethylene group, 1,3-propylene, 1,2-propylene, 2,2-propylene, etc.
- Examples of the cycloalkylene group that can be selected as Z include a cyclopropylene group, a cyclobutylene group, a cyclopentylene group, a cyclohexylene group, a cycloheptylene group, a cyclooctylene group, and an adamantylene group.
- Examples of the arylene group that can be selected as Z include a phenylene group, a naphthylene group, an anthrylene group, a phenanthrylene group, a biphenylene group, and a terphenylene group.
- Component (B) used in one embodiment of the present invention is selected from a compound (B11) represented by the following general formula (b-11) and a compound (B21) represented by the following general formula (b-21). It is more preferable to include more than one species.
- R b1 is each independently a hydrogen atom or an alkyl group having 1 to 10 carbon atoms. Specific examples of the alkyl group that can be selected as R b1 and the preferred range of the number of carbon atoms are as described above.
- R b3 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.
- n is an integer of 1 to 20.
- the hydrocarbon group that can be selected as R b3 includes a ring-forming carbon group optionally substituted with an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, and an alkyl group having 1 to 10 carbon atoms.
- Examples include a cycloalkyl group having 3 to 18 carbon atoms, an aryl group having 6 to 18 ring carbon atoms which may be substituted with an alkyl group having 1 to 10 carbon atoms, and an arylalkyl group having 7 to 19 carbon atoms.
- the alkyl group may be a straight-chain alkyl group or a branched-chain alkyl group.
- the alkenyl group may be a straight chain alkenyl group or a branched chain alkenyl group.
- Examples of the alkyl group, cycloalkyl group, and aryl group that can be selected as R b3 include the same groups as the alkyl group, cycloalkyl group, and aryl group that can be selected as R b2 .
- Examples of the alkenyl group that can be selected as R b3 include ethenyl group (vinyl group), propenyl group, butenyl group, pentenyl group, hexenyl group, heptenyl group, octenyl group, nonenyl group, decenyl group, dodecenyl group.
- R b3 examples include phenylmethyl group, phenylethyl group, naphthylmethyl group, naphthylethyl group, and the like.
- R b3 is preferably an alkyl group having 1 to 20 carbon atoms or an alkenyl group having 2 to 20 carbon atoms, and more preferably an alkyl group having 1 to 20 carbon atoms.
- the number of carbon atoms in the alkyl group that can be selected as R b3 is preferably 3 to 20, more preferably 4 to 18, still more preferably 6 to 16, even more preferably 8 to 14.
- the alkenyl group that can be selected as R b3 preferably has 2 to 20 carbon atoms, more preferably 3 to 18 carbon atoms, and still more preferably 6 to 16 carbon atoms.
- the component (B) used in one aspect of the present invention may contain at least the compound (B1) represented by the general formula (b-1) from the viewpoint of providing a lubricating oil composition with improved high-temperature cleanliness.
- it preferably contains at least the compound (B11) represented by the general formula (b-11).
- the content ratio of component (B1) or (B11) in component (B) is the total amount (100% by mass) of component (B) contained in the lubricating oil composition.
- a lubricating oil composition with improved high-temperature cleanliness on a standard basis preferably 40 to 100% by mass or more, more preferably 50 to 100% by mass, more preferably 60 to 100% by mass, and even more preferably The content is 70 to 100% by weight, more preferably 80 to 100% by weight, even more preferably 90 to 100% by weight, particularly preferably 95 to 100% by weight.
- the content of component (B) is determined based on the total amount (100% by mass) of the lubricating oil composition, which provides a lubricating oil composition with better long drain properties.
- the content of component (B) is determined based on the total amount (100% by mass) of the lubricating oil composition, which provides a lubricating oil composition with better long drain properties.
- a product preferably 0.60% by mass or more, more preferably 0.65% by mass or more, more preferably 0.70% by mass or more, more preferably 0.85% by mass or more, and more preferably 1. 00% by mass or more, more preferably 1.20% by mass or more, even more preferably 1.40% by mass or more, still more preferably 1.70% by mass or more, even more preferably 2.00% by mass or more, even more preferably 2.00% by mass or more.
- the content is 10% by mass or more, even more preferably 2.20% by mass or more, even more preferably 2.50% by mass or more, particularly preferably 2.55% by mass or more, and also maintains high temperature cleanliness better.
- a lubricating oil composition preferably 10.0% by mass or less, more preferably 9.5% by mass or less, more preferably 9.0% by mass or less, still more preferably 8.5% by mass or less, and Preferably 8.0% by mass or less, even more preferably 7.5% by mass or less, particularly preferably 7.0% by mass or less, further preferably 6.5% by mass or less, 6.0% by mass or less, 5.
- the content of component (B) in terms of nitrogen atoms is based on the total amount (100% by mass) of the lubricating oil composition, and the lubricating oil composition has better long drain properties.
- the content is .070% by mass or more, more preferably 0.080% by mass or more, even more preferably 0.090% by mass or more, particularly preferably 0.100% by mass or more, and also maintains high temperature cleanliness better.
- a lubricating oil composition preferably 0.60% by mass or less, more preferably 0.50% by mass or less, more preferably 0.45% by mass or less, still more preferably 0.42% by mass or less, and Preferably it is 0.40% by mass or less, even more preferably 0.37% by mass or less, particularly preferably 0.35% by mass or less, further preferably 0.32% by mass or less, 0.30% by mass or less, 0. It may be 27% by mass or less, 0.25% by mass or less, 0.22% by mass or less, or 0.20% by mass or less.
- the lubricating oil composition of one embodiment of the present invention contains organic zinc dithiophosphate (hereinafter also referred to as "ZnDTP") having at least one primary alkyl group as component (C). By containing component (C), a lubricating oil composition with improved copper elution resistance can be obtained.
- component (C) may be used alone or in combination of two or more.
- Component (C) used in one embodiment of the present invention may be ZnDTP having at least one primary alkyl group, and ZnDTP having an alkyl group other than the primary alkyl group or a hydrocarbon group other than the alkyl group. It may be.
- the component (C) used in one embodiment of the present invention contains a compound (C1) represented by the following general formula (c-1). It is preferable.
- R c1 to R c4 are each independently a primary alkyl group.
- component (C1) in which all of the substituents R c1 to R c4 are primary alkyl groups a lubricating oil composition with improved copper elution resistance can be obtained.
- the content ratio of component (C1) in component (C) used in one aspect of the present invention is preferably based on the total amount (100% by mass) of component (C) contained in the lubricating oil composition. 60 to 100% by mass, more preferably 70 to 100% by mass, more preferably 80 to 100% by mass, even more preferably 85 to 100% by mass, even more preferably 90 to 100% by mass, particularly preferably 95 to 100% by mass. %.
- the number of carbon atoms in the primary alkyl group that can be selected as R c1 to R c4 is preferably 1 to 7, more preferably 2 to 7, from the viewpoint of providing a lubricating oil composition with improved copper elution resistance. , more preferably 3 to 7, even more preferably 4 to 7.
- Examples of the primary alkyl group that can be selected as R c1 to R c4 include groups represented by the following general formula (ci).
- R c is a hydrogen atom or an alkyl group, and the alkyl group may be a straight-chain alkyl group or a branched-chain alkyl group.
- the number of carbon atoms in the alkyl group that can be selected as R c is preferably 1 to 6, more preferably 2 to 6, and still more preferably 3 to 5.
- Examples of the alkyl group that can be selected as R c include methyl group, ethyl group, propyl group (n-propyl group, isopropyl group), butyl group (n-butyl group, s-butyl group, t-butyl group).
- isobutyl group isobutyl group
- pentyl group n-pentyl group, 1-methylbutyl group, 2-methylbutyl group, 3-methylbutyl group, 1-ethylpropyl group, 1,1-dimethylpropyl group, 1,2-dimethylpropyl group, 2,2-dimethylpropyl group
- hexyl group n-hexyl group, 2-methylpentyl group, 3-methylpentyl group, 2,2-dimethylbutyl group, 2,3-dimethylbutyl group
- the content of component (C) is based on the total amount (100% by mass) of the lubricating oil composition, and the lubricating oil composition has improved copper elution resistance.
- the lubricating oil composition has improved copper elution resistance.
- % or more even more preferably 0.70% by mass or more, even more preferably 0.80% by mass or more, particularly preferably 0.90% by mass or more, and also has good high temperature detergency.
- 3.0% by mass or less preferably 7.0% by mass or less, more preferably 6.0% by mass or less, more preferably 5.0% by mass or less, still more preferably 4.0% by mass or less, even more preferably 3.0% by mass or less. It is 0% by mass or less, particularly preferably 2.0% by mass or less.
- the content of component (C) in terms of zinc atoms is based on the total amount (100% by mass) of the lubricating oil composition, which further improves copper elution resistance.
- a lubricating oil composition preferably 0.005% by mass or more, more preferably 0.01% by mass or more, still more preferably 0.03% by mass or more, even more preferably 0.05% by mass or more, especially It is preferably 0.07% by mass or more, and from the viewpoint of providing a lubricating oil composition with good high-temperature cleanability, it is preferably 0.70% by mass or less, more preferably 0.50% by mass or less, and even more preferably is 0.30% by mass or less, even more preferably 0.20% by mass or less, particularly preferably 0.15% by mass or less.
- component (B) and component (C) are combined to further improve high-temperature cleanliness and to provide a lubricating oil composition with further improved copper elution resistance.
- the content ratio [(B)/(C)] is a mass ratio, preferably 0.5 or more, more preferably 0.7 or more, more preferably 1.0 or more, still more preferably 1.2 or more, and Preferably 1.5 or more, even more preferably 1.7 or more, even more preferably 2.0 or more, particularly preferably 2.2 or more, and preferably 10.0 or less, more preferably 8.00 or less, more preferably 7.00 or less, more preferably 6.00 or less, still more preferably 5.50 or less, even more preferably 5.00 or less, even more preferably 4.50 or less, even more preferably 4.00 It is particularly preferably 3.50 or less.
- the lubricating oil composition of one embodiment of the present invention may contain zinc organic dithiophosphate, which does not fall under component (C), to the extent that the effects of the present invention are not impaired.
- the organic zinc dithiophosphate that does not fall under component (C) is ZnDTP that does not have a primary alkyl group, and includes, for example, ZnDTP in which all substituents are secondary alkyl groups.
- the content of organic zinc dithiophosphate, which does not fall under component (C), be as small as possible, and it is more preferable that it be substantially absent. preferable.
- the phrase "does not substantially contain zinc organic dithiophosphate, which does not fall under component (C)" is a provision that negates the mode of blending and containing the organic zinc dithiophosphate for a predetermined purpose. However, this provision does not negate an embodiment in which the organic zinc dithiophosphate is mixed or present unintentionally or unavoidably.
- the content of organic zinc dithiophosphate, which does not fall under component (C), is preferably 0.001 mass% based on the total amount (100% by mass) of the lubricating oil composition. %, more preferably less than 0.0001% by weight, even more preferably less than 0.00001% by weight.
- the content of organic zinc dithiophosphate, which does not fall under component (C) is as follows: Preferably less than 10 parts by weight, more preferably less than 5 parts by weight, more preferably less than 1 part by weight, even more preferably less than 0.1 parts by weight, even more preferably less than 0.01 parts by weight, even more preferably 0.001 parts by weight. It is less than 0.0001 parts by weight, particularly preferably less than 0.0001 parts by weight.
- the lubricating oil composition of one embodiment of the present invention may contain molybdenum dithiocarbamate as component (D). By containing component (D), a lubricating oil composition with improved copper elution resistance can be obtained. In one embodiment of the present invention, component (D) may be used alone or in combination of two or more.
- Component (D) used in one embodiment of the present invention includes dinuclear molybdenum dithiocarbamate containing two molybdenum atoms in one molecule, and trinuclear molybdenum dithiocarbamate containing three molybdenum atoms in one molecule. and dinuclear molybdenum dithiocarbamate is preferred.
- Component (D) used in one embodiment of the present invention is 1 selected from a compound (D1) represented by the following general formula (d-1) and a compound (D2) represented by the following general formula (d-2). It is preferable to include more than one species.
- R d1 to R d4 each independently represent a hydrocarbon group, and may be the same or different from each other.
- X 1 to X 8 each independently represent an oxygen atom or a sulfur atom, and may be the same or different. However, at least one of X 1 to X 8 in formula (d-1) is a sulfur atom. In one embodiment of the present invention, it is preferable that X 1 and X 2 in formula (d-1) are oxygen atoms, and X 3 to X 8 are sulfur atoms. Further, it is preferable that X 1 to X 4 in formula (d-2) are oxygen atoms.
- the molar ratio of sulfur atoms to oxygen atoms in X 1 to X 8 [sulfur atoms/oxygen atoms] is preferably 1/4 to 4. /1, more preferably 1/3 to 3/1.
- the hydrocarbon groups that can be selected as R d1 to R d4 include, for example, a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, Alkyl groups such as hexyl group, heptyl group, octyl group, isooctyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, isotridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group; octenyl alkenyl groups such as nonenyl group, decenyl group, undecenyl group, dodecenyl group, tridecenyl group, tetradecen
- the number of carbon atoms in the hydrocarbon group which can be selected as R d1 to R d4 , is preferably 1 to 20, more preferably 3 to 18, from the viewpoint of providing a lubricating oil composition with improved copper elution resistance. More preferably 5 to 16, even more preferably 8 to 14, particularly preferably 8 or 13.
- R d1 to R d1 in the above general formulas (d-1) and (d-2) are used as component (D) in one embodiment of the present invention.
- R d4 is an alkyl group
- the molar ratio [( ⁇ )/( ⁇ )] of 11 to 20, more preferably 11 to 16, even more preferably 12 to 14) to the alkyl group ( ⁇ ) is preferably 1/7 to 7/1, more preferably 1/7 to 7/1.
- the content of component (D) is based on the total amount (100% by mass) of the lubricating oil composition, and the lubricating oil composition has improved copper elution resistance. From the viewpoint of mass% or more, and 5.0 mass% or less, 4.0 mass% or less, 3.0 mass% or less, 2.0 mass% or less, 1.5 mass% or less, or 1.0 mass% or less You can also use it as
- the content of component (D) in terms of molybdenum atoms is based on the total amount (100% by mass) of the lubricating oil composition, which further improves copper elution resistance.
- a lubricating oil composition preferably 0.01% by mass or more, more preferably 0.02% by mass or more, still more preferably 0.03% by mass or more, even more preferably 0.04% by mass or more, especially It is preferably 0.05% by mass or more, and can also be 0.70% by mass or less, 0.50% by mass or less, 0.30% by mass or less, 0.20% by mass or less, or 0.10% by mass or less. good.
- the lubricating oil composition of one embodiment of the present invention may contain molybdenum dithiophosphate to the extent that the effects of the present invention are not impaired.
- molybdenum dithiophosphate include compounds represented by the following general formula (d'-i) and compounds represented by the following general formula (d'-ii).
- R d11 to R d14 each independently represent a hydrocarbon group, and may be the same or different from each other.
- X 11 to X 18 each independently represent an oxygen atom or a sulfur atom, and may be the same or different. However, at least two of X 11 to X 18 in formula (d'-i) are sulfur atoms.
- the content of molybdenum dithiophosphate is small, and it is more preferable that it is substantially not contained.
- "not substantially containing molybdenum dithiophosphate” is a provision that negates the mode of blending and containing molybdenum dithiophosphate for a predetermined purpose; However, the provision does not negate an embodiment in which the molybdenum dithiophosphate is mixed or present.
- the content of molybdenum dithiophosphate is preferably less than 0.001% by mass, more preferably 0.0001% by mass, based on the total amount (100% by mass) of the lubricating oil composition. It is less than 0.00001% by weight, more preferably less than 0.00001% by weight.
- the content of molybdenum dithiophosphate is preferably less than 10 parts by mass, more preferably less than 10 parts by mass of the total amount of component (C) contained in the lubricating oil composition. is less than 5 parts by weight, more preferably less than 1 part by weight, even more preferably less than 0.1 part by weight, even more preferably less than 0.01 part by weight, even more preferably less than 0.001 part by weight, particularly preferably 0. It is less than 0,001 parts by mass.
- the lubricating oil composition of one embodiment of the present invention contains an antioxidant that does not fall under component (B) as component (E) from the viewpoint of providing a lubricating oil composition with further improved high-temperature cleanliness. Good too.
- the component (E) used in one embodiment of the present invention include amine antioxidants other than hindered amine compounds, phenolic antioxidants, sulfur antioxidants, phosphorus antioxidants, and the like. In one embodiment of the present invention, component (E) may be used alone or in combination of two or more.
- Component (E) used in one aspect of the present invention preferably contains one or more selected from amine antioxidants (E1) and phenolic antioxidants (E2) that do not fall under component (B), It is more preferable to include both component (E1) and component (E2).
- the total content of components (E1) and (E2) in component (E) used in one aspect of the present invention is preferably based on the total amount (100% by mass) of component (E) contained in the lubricating oil composition. is 60 to 100% by mass, more preferably 70 to 100% by mass, more preferably 80 to 100% by mass, even more preferably 85 to 100% by mass, even more preferably 90 to 100% by mass, particularly preferably 95 to 100% by mass. Mass%.
- component (E) used in one embodiment of the present invention contains both components (E1) and (E2)
- the content ratio of component (E1) and component (E2) [(E1)/(E2)] is a mass ratio, preferably 0.10 to 5.0, more preferably 0.30 to 4.5, more preferably 0.50 to 4.0, even more preferably 0.75 to 3.5, More preferably 1.0 to 3.0, particularly preferably 1.2 to 2.7.
- the component (E1) used in one embodiment of the present invention includes, for example, diphenylamine-based oxidized diphenylamine such as diphenylamine, alkylated diphenylamine having an alkyl group having 3 to 20 carbon atoms (preferably 6 to 16 carbon atoms, and more preferably 8 to 12 carbon atoms). Inhibitor; naphthylamine-based antioxidant such as ⁇ -naphthylamine, phenyl- ⁇ -naphthylamine, substituted phenyl- ⁇ -naphthylamine having an alkyl group having 3 to 20 carbon atoms (preferably 6 to 16, more preferably 8 to 12). ; etc.
- diphenylamine-based oxidized diphenylamine such as diphenylamine, alkylated diphenylamine having an alkyl group having 3 to 20 carbon atoms (preferably 6 to 16 carbon atoms, and more preferably 8 to 12 carbon atoms).
- Inhibitor nap
- Examples of the component (E2) used in one embodiment of the present invention include 2,6-di-t-butylphenol, 2,6-di-t-butyl-4-methylphenol, 2,6-di-t-butylphenol, and 2,6-di-t-butylphenol.
- the content of component (E) is preferably 0.01% by mass or more, more preferably 0.01% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. 05% by mass or more, more preferably 0.10% by mass or more, even more preferably 0.30% by mass or more, even more preferably 0.50% by mass or more, even more preferably 0.70% by mass or more, particularly preferably 1 .00 mass% or more, and 10.0 mass% or less, 8.0 mass% or less, 6.0 mass% or less, 5.0 mass% or less, 4.0 mass% or less, 3.0 mass% It may be less than or equal to 2.0% by mass.
- the ratio [(E)/(B)] between component (E) and component (B) is preferably 0.10 or more, more preferably 0. .20 or more, more preferably 0.30 or more, even more preferably 0.40 or more, particularly preferably 0.45 or more, and preferably 6.0 or less, more preferably 5.0 or less, even more preferably is 4.0 or less, more preferably 3.0 or less, particularly preferably 2.0 or less.
- the content of component (E1) is preferably 0.01% by mass or more, more preferably 0.01% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. 05% by mass or more, more preferably 0.10% by mass or more, even more preferably 0.20% by mass or more, even more preferably 0.30% by mass or more, even more preferably 0.50% by mass or more, particularly preferably 0
- the content may be .70% by mass or more, and may also be 5.0% by mass or less, 4.0% by mass or less, 3.0% by mass or less, 2.0% by mass or less, or 1.5% by mass or less.
- the ratio [(E1)/(B)] between component (E1) and component (B) is preferably 0.05 or more, more preferably 0. .10 or more, more preferably 0.20 or more, even more preferably 0.25 or more, particularly preferably 0.30 or more, and preferably 5.0 or less, more preferably 4.0 or less, even more preferably is 3.0 or less, more preferably 2.0 or less, particularly preferably 1.0 or less.
- the content of component (E2) is preferably 0.01% by mass or more, more preferably 0.01% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. 05% by mass or more, more preferably 0.10% by mass or more, even more preferably 0.20% by mass or more, even more preferably 0.30% by mass or more, particularly preferably 0.40% by mass or more, and It may be 5.0% by mass or less, 4.0% by mass or less, 3.0% by mass or less, 2.0% by mass or less, or 1.0% by mass or less.
- the ratio [(E2)/(B)] between component (E2) and component (B) is preferably 0.01 or more, more preferably 0. .05 or more, more preferably 0.10 or more, even more preferably 0.12 or more, particularly preferably 0.15 or more, and preferably 3.0 or less, more preferably 2.0 or less, even more preferably is 1.0 or less, more preferably 0.70 or less, particularly preferably 0.50 or less.
- the lubricating oil composition of one embodiment of the present invention may contain an imide compound as component (F). By containing component (F), a lubricating oil composition that can suppress sludge precipitation can be obtained.
- component (F) may be used alone or in combination of two or more.
- imide compound means a compound having an imide structure represented by the following formula (f-0), and includes a chain compound having the imide structure and a cyclic compound having the imide structure. Also included. (In the above formula, * indicates the bonding position.)
- Component (F) used in one embodiment of the present invention is a modified imide compound reacted with one or more selected from boron compounds, alcohols, aldehydes, ketones, alkylphenols, cyclic carbonates, epoxy compounds, organic acids, etc. Alternatively, it may be a non-modified imide compound.
- Component (F) used in one embodiment of the present invention preferably contains one or more selected from alkenyl succinimides and modified products thereof, including non-boron-modified alkenyl succinimides (F1) and boron-modified alkenyl succinimides. It is more preferable to contain one or more selected from (F2), and even more preferable to contain both components (F1) and (F2).
- the total content of components (F1) and (F2) in component (F) used in one aspect of the present invention is preferably based on the total amount (100% by mass) of component (F) contained in the lubricating oil composition. is 60 to 100% by mass, more preferably 70 to 100% by mass, more preferably 80 to 100% by mass, even more preferably 85 to 100% by mass, even more preferably 90 to 100% by mass, particularly preferably 95 to 100% by mass. Mass%.
- Examples of the non-boron-modified alkenylsuccinimide (F1) include alkenylsuccinic acid bisimide (F11) represented by the following general formula (f-1) and alkenylsuccinic acid monoimide (F11) represented by the following general formula (f-2).
- One or more types selected from F12) are preferred.
- R f1 , R f2 and R f3 are each independently an alkenyl group having a mass average molecular weight (Mw) of 500 to 3000 (preferably 900 to 2500). It is.
- alkenyl group that can be selected as R f1 , R f2 and R f3 include a polybutenyl group, a polyisobutenyl group, an ethylene-propylene copolymer, and among these, a polybutenyl group or a polyisobutenyl group is preferred.
- a f1 , A f2 and A f3 are each independently an alkylene group having 2 to 5 carbon atoms.
- z1 is an integer of 0 to 10, preferably an integer of 1 to 4, more preferably 2 or 3.
- z2 is an integer of 1 to 10, preferably an integer of 2 to 5, more preferably 3 or 4.
- Examples of the boron-modified alkenylsuccinimide (F2) used in one embodiment of the present invention include a boron-modified alkenylsuccinimide bisimide represented by the above general formula (f-1), and the following general formula (f- Examples include boron-modified alkenylsuccinic acid monoimide represented by 2).
- the ratio [B/N] of boron atoms and nitrogen atoms constituting component (F2) is preferably 0.1 or more, more preferably 0.2 or more, and even more preferably 0.3. Above, it is even more preferably 0.5 or more, particularly preferably 0.7 or more.
- the content ratio [(F1)/(F2)] of component (F1) and component (F2) is preferably 0 in terms of mass ratio. .10 or more, more preferably 0.50 or more, even more preferably 0.70 or more, even more preferably 1.00 or more, particularly preferably 1.20 or more, and preferably less than 5.00, more preferably is less than 4.00, more preferably less than 3.00, even more preferably less than 2.50, particularly preferably less than 2.00.
- the content ratio [B/N] of boron atoms derived from component (F2) to nitrogen atoms derived from component (F) is preferably 0.01 or more, more preferably 0.05 or more, still more preferably 0.10 or more, even more preferably 0.20 or more, particularly preferably 0.30 or more, and preferably 0.90 or more, It is preferably 0.80 or less, more preferably 0.70 or less, even more preferably 0.60 or less, particularly preferably 0.55 or less.
- the content of component (F) is preferably 0.50% by mass or more, more preferably 1.5% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition.
- 0% by mass or more more preferably 2.0% by mass or more, even more preferably 3.0% by mass or more, particularly preferably 4.0% by mass or more, and preferably 12.0% by mass or less, more preferably
- it is 10.0% by mass or less, more preferably 9.0% by mass or less, even more preferably 8.5% by mass or less, particularly preferably 8.0% by mass or less.
- the content of component (F) in terms of nitrogen atoms is preferably 0.010 to 0.200 based on the total amount (100% by mass) of the lubricating oil composition. % by mass, more preferably 0.020-0.170% by mass, even more preferably 0.030-0.130% by mass, even more preferably 0.040-0.100% by mass, particularly preferably 0.050-0.050% by mass. It is 0.090% by mass.
- the content of component (F1) is preferably 0.10% by mass or more, more preferably 0.10% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition.
- the content of component (F1) in terms of nitrogen atoms is preferably 0.005 to 0.150 based on the total amount (100% by mass) of the lubricating oil composition. mass%, more preferably 0.010 to 0.120 mass%, still more preferably 0.015 to 0.100 mass%, even more preferably 0.020 to 0.080 mass%, particularly preferably 0.025 to 0.025 mass% It is 0.070% by mass.
- the content of component (F2) is preferably 0.10% by mass or more, more preferably 0.10% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. 30% by mass or more, more preferably 0.50% by mass or more, even more preferably 1.0% by mass or more, particularly preferably 1.5% by mass or more, and preferably 8.0% by mass or less, more preferably Preferably it is 7.0% by mass or less, more preferably 6.0% by mass or less, even more preferably 5.0% by mass or less, particularly preferably 4.0% by mass or less.
- the content of component (F2) in terms of boron atoms is preferably 0.001 to 0.100 based on the total amount (100% by mass) of the lubricating oil composition. % by mass, more preferably 0.005-0.090% by mass, even more preferably 0.010-0.080% by mass, even more preferably 0.015-0.070% by mass, particularly preferably 0.020-0.020% by mass. It is 0.060% by mass.
- the lubricating oil composition of one embodiment of the present invention may contain a metal detergent as component (G). By containing component (G), a lubricating oil composition with better high-temperature cleanliness can be obtained. In one embodiment of the present invention, component (G) may be used alone or in combination of two or more.
- Component (G) used in one embodiment of the present invention includes metal salts such as metal sulfonates, metal salicylates, and metal phenates.
- the metal atoms constituting the metal salt are preferably metal atoms selected from alkali metals and alkaline earth metals, more preferably sodium, calcium, magnesium, or barium, and still more preferably calcium.
- Component (G) used in one aspect of the present invention preferably contains one or more selected from calcium sulfonate, calcium salicylate, and calcium phenate, and more preferably contains calcium salicylate.
- the content of calcium salicylate is preferably 50 to 100% by mass, more preferably 60 to 100% by mass, even more preferably 70% by mass, based on the total amount (100% by mass) of the metal detergent contained in the lubricating oil composition. ⁇ 100% by weight, more preferably 80 ⁇ 100% by weight.
- the base number of the metal detergent is preferably 0 to 600 mgKOH/g.
- the component (G) used in one embodiment of the present invention may be a neutral metal-based detergent or an overbased metal-based detergent.
- a neutral metallic detergent means a metallic detergent with a base number of 0 to 100 mgKOH/g or more
- an overbased metallic detergent refers to a detergent with a base number of more than 100 mgKOH/g. means a metal-based cleaning agent.
- the content of component (G) is preferably 0.10% by mass or more, more preferably 0.10% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. 30% by mass or more, more preferably 0.50% by mass or more, more preferably 0.70% by mass or more, even more preferably 1.00% by mass or more, even more preferably 1.20% by mass or more, even more preferably 1.
- 50% by mass or more even more preferably 1.70% by mass or more, particularly preferably 1.90% by mass or more, and preferably 10.0% by mass or less, more preferably 8.0% by mass or less, and more Preferably it is 7.0% by mass or less, more preferably 6.0% by mass or less, even more preferably 5.0% by mass or less, particularly preferably 4.0% by mass or less.
- the content of component (G) in terms of calcium atoms is preferably 50 mass ppm or more, more preferably is 100 mass ppm or more, more preferably 150 mass ppm or more, more preferably 200 mass ppm or more, even more preferably 250 mass ppm or more, still more preferably 300 mass ppm or more, still more preferably 350 mass ppm or more, even more preferably 400 mass ppm or more, particularly preferably 450 mass ppm or more, and preferably 3000 mass ppm or less, more preferably 2500 mass ppm or less, more preferably 2000 mass ppm or less, still more preferably 1500 mass ppm or less, and even more Preferably it is 1000 mass ppm or less, particularly preferably 800 mass ppm or less.
- the lubricating oil composition of one embodiment of the present invention may further contain lubricating oil additives other than components (B) to (G), as necessary, within a range that does not impair the effects of the present invention.
- lubricating oil additives include pour point depressants, viscosity index improvers, friction modifiers, antiwear agents, extreme pressure agents, metal deactivators, oil agents, rust preventives, and antifoaming agents. agents, etc. These lubricating oil additives may be used alone or in combination of two or more.
- each of these lubricating oil additives can be adjusted as appropriate within a range that does not impair the effects of the present invention, but the content of each additive is based on the total amount (100% by mass) of the lubricating oil composition.
- the amount for each agent is usually 0.001 to 15% by weight, preferably 0.005 to 10% by weight, and more preferably 0.01 to 5% by weight.
- the lubricating oil composition of one aspect of the present invention may further contain a pour point depressant.
- the pour point depressants may be used alone or in combination of two or more.
- Examples of pour point depressants used in one embodiment of the present invention include ethylene-vinyl acetate copolymers, condensates of chlorinated paraffins and naphthalene, condensates of chlorinated paraffins and phenols, polymethacrylates, and polyalkylstyrenes. etc.
- the mass average molecular weight (Mw) of the pour point depressant used in one aspect of the present invention is 5,000 or more, 7,000 or more, 10,000 or more, 15,000 or more, 20,000 or more, 25,000 or more, 30,000 or more, 35,000 or more, 40,000 or more, 45,000 or more, 50,000 or more, 55,000 or more, or 60,000 or more, and 150,000 or less, 120,000 or less , 100,000 or less, 90,000 or less, or 80,000 or less.
- the lubricating oil composition of one embodiment of the present invention may further contain a viscosity index improver.
- the viscosity index improvers may be used alone or in combination of two or more.
- Examples of the viscosity index improver used in one embodiment of the present invention include non-dispersed polymethacrylate, dispersed polymethacrylate, olefin copolymer (e.g., ethylene-propylene copolymer, etc.), and dispersed olefin copolymer.
- the weight average molecular weight (Mw) of the viscosity index improver used in one aspect of the present invention may be 5,000 or more, 7,000 or more, 10,000 or more, 15,000 or more, or 20,000 or more; , 1,000,000 or less, 700,000 or less, 500,000 or less, 300,000 or less, 200,000 or less, 100,000 or less, or 50,000 or less.
- the lubricating oil composition of one embodiment of the present invention may further contain a friction modifier or an antiwear agent.
- the friction modifier or anti-wear agent may be used alone or in combination of two or more.
- Examples of friction modifiers and antiwear agents used in one embodiment of the present invention include sulfur-based compounds such as sulfurized olefins, dialkyl polysulfides, diarylalkyl polysulfides, and diaryl polysulfides; Phosphorous compounds such as acid esters, thiophosphoric acid esters, phosphite esters, alkyl hydrogen phosphites, phosphoric acid ester amine salts, phosphite ester amine salts; fatty acid esters, fatty acid amides, fatty acids, aliphatic alcohols, aliphatic ethers , urea compounds, hydrazide compounds, and other ashless friction modifiers.
- the lubricating oil composition of one embodiment of the present invention may further contain an extreme pressure agent.
- the extreme pressure agent may be used alone or in combination of two or more.
- Examples of the extreme pressure agent used in one embodiment of the present invention include sulfur-based compounds such as sulfurized olefins, dialkyl polysulfides, diarylalkyl polysulfides, and diaryl polysulfides, phosphoric acid esters, thiophosphoric acid esters, phosphorous esters, and alkyl hydrogen phosphites. , phosphoric acid ester amine salts, phosphorous acid ester amine salts, and the like.
- the lubricating oil composition of one embodiment of the present invention may further contain a metal deactivator.
- the metal deactivators may be used alone or in combination of two or more. Examples of the metal deactivator used in one embodiment of the present invention include benzotriazole, triazole derivatives, benzotriazole derivatives, thiadiazole derivatives, and the like.
- the lubricating oil composition of one embodiment of the present invention may further contain an oily agent.
- the oily agents may be used alone or in combination of two or more.
- Examples of the oily agent used in one embodiment of the present invention include aliphatic saturated and unsaturated monocarboxylic acids such as stearic acid and oleic acid, polymerized fatty acids such as dimer acid and hydrogenated dimer acid, ricinoleic acid, and 12-hydroxystearin.
- Hydroxy fatty acids such as acids; aliphatic saturated and unsaturated monoalcohols such as lauryl alcohol and oleyl alcohol; aliphatic saturated and unsaturated monoamines such as stearylamine and oleylamine; aliphatic saturated and unsaturated monoamines such as lauric acid amide and oleic acid amide.
- Examples include saturated monocarboxylic acid amides.
- the lubricating oil composition of one embodiment of the present invention may further contain a rust inhibitor.
- the rust inhibitors may be used alone or in combination of two or more.
- Examples of the rust preventive agent used in one embodiment of the present invention include fatty acids, alkenyl succinic acid half esters, fatty acid soaps, alkyl sulfonates, polyhydric alcohol fatty acid esters, fatty acid amines, oxidized paraffins, alkyl polyoxyethylene ethers, and the like. Can be mentioned.
- the lubricating oil composition of one embodiment of the present invention may further contain an antifoaming agent.
- Antifoaming agents may be used alone or in combination of two or more. Examples of the antifoaming agent used in one embodiment of the present invention include alkyl silicone antifoaming agents, fluorosilicone antifoaming agents, fluoroalkyl ether antifoaming agents, and the like.
- the method for producing the lubricating oil composition of one embodiment of the present invention is not particularly limited, but from the viewpoint of productivity, the base oil (A) may be added to the above-mentioned components (B) and (C) as necessary.
- the method includes a step of blending components (D) to (G) and other lubricating oil additives.
- the kinematic viscosity at 40°C of the lubricating oil composition of one embodiment of the present invention is preferably 10 to 120 mm 2 /s, more preferably 15 to 100 mm 2 /s, even more preferably 20 to 80 mm 2 /s, even more preferably is 25 to 70 mm 2 /s, particularly preferably 27 to 60 mm 2 /s.
- the kinematic viscosity at 100° C. of the lubricating oil composition of one embodiment of the present invention is preferably 2.5 to 20.0 mm 2 /s, more preferably 4.0 to 18.0 mm 2 /s, and still more preferably 5.0 mm 2 /s. 0 to 15.0 mm 2 /s, more preferably 6.0 to 12.0 mm 2 /s, particularly preferably 7.0 to 10.0 mm 2 /s.
- the viscosity index of the lubricating oil composition of one embodiment of the present invention is preferably 80 or more, more preferably 100 or more, more preferably 120 or more, even more preferably 150 or more, even more preferably 170 or more, and particularly preferably 200 or more. It is.
- the content of calcium atoms is preferably 50 mass ppm or more, more preferably 100 mass ppm or more, and more preferably 50 mass ppm or more, based on the total amount (100 mass %) of the lubricating oil composition.
- the content of zinc atoms is preferably 50 mass ppm or more, more preferably 100 mass ppm or more, and further Preferably 300 mass ppm or more, even more preferably 500 mass ppm or more, particularly preferably 700 mass ppm or more, and preferably 7000 mass ppm or less, more preferably 5000 mass ppm or less, still more preferably 3000 mass ppm or less. , even more preferably 2000 mass ppm or less, particularly preferably 1500 mass ppm or less.
- the content of molybdenum atoms is preferably 100 mass ppm or more, more preferably 200 mass ppm or more, and further Preferably 300 mass ppm or more, even more preferably 400 mass ppm or more, particularly preferably 500 mass ppm or more, and preferably 7000 mass ppm or less, more preferably 5000 mass ppm or less, still more preferably 3000 mass ppm or less. , more preferably 2000 mass ppm or less, particularly preferably 1000 mass ppm or less.
- the content of phosphorus atoms is preferably 50 mass ppm or more, more preferably 100 mass ppm or more, and further Preferably 200 mass ppm or more, even more preferably 300 mass ppm or more, particularly preferably 400 mass ppm or more, and preferably 1000 mass ppm or less, more preferably 950 mass ppm or less, still more preferably 900 mass ppm or less. , even more preferably 850 mass ppm or less, particularly preferably 750 mass ppm or less.
- the content of boron atoms is preferably 10 mass ppm or more, more preferably 50 mass ppm or more, and further Preferably 100 mass ppm or more, even more preferably 150 mass ppm or more, particularly preferably 200 mass ppm or more, and preferably 1000 mass ppm or less, more preferably 900 mass ppm or less, still more preferably 800 mass ppm or less. , more preferably 700 mass ppm or less, particularly preferably 600 mass ppm or less.
- the nitrogen atom content is preferably 100 mass ppm or more, more preferably 500 mass ppm or more, and further Preferably 1000 mass ppm or more, even more preferably 1500 mass ppm or more, particularly preferably 1800 mass ppm or more, and preferably 8000 mass ppm or less, more preferably 6000 mass ppm or less, still more preferably 5000 mass ppm or less. , more preferably 4000 mass ppm or less, particularly preferably 3000 mass ppm or less.
- the amount of copper eluted is preferably less than 250 mass ppm, more preferably 220 mass ppm, when the lubricating oil composition of one embodiment of the present invention is subjected to a copper leaching resistance test described in the Examples below.
- ppm by weight more preferably less than 200 ppm by weight, even more preferably less than 185 ppm by weight, even more preferably less than 170 ppm by weight, even more preferably less than 120 ppm by weight, particularly preferably less than 100 ppm by weight.
- the lubricating oil composition of one embodiment of the present invention is subjected to the hot tube test described in the Examples below, and the merit score is preferably 7.0 or higher, more preferably 7. .5 or more, more preferably 8.0 or more, even more preferably 8.5 or more, particularly preferably 9.0 or more.
- the lubricating oil composition of one embodiment of the present invention has excellent copper elution resistance and can maintain good long drain properties over a long period of time. Therefore, the lubricating oil composition of one embodiment of the present invention can be applied to various devices that can exhibit the above characteristics, and can be suitably used for lubrication between various parts in an internal combustion engine, and in particular, can be applied to various devices that can exhibit the above characteristics. It can be suitably used for lubrication between various parts in an internal combustion engine of a hybrid system having an electric motor as a power source.
- the present invention can also provide the following [I] and [II].
- the hybrid system described in [I] and [II] above is a mechanism having an internal combustion engine and an electric motor as power sources.
- Examples of the hybrid system described in [I] and [II] above include a hybrid automobile, a hybrid two-wheeled vehicle, a hybrid railway, a hybrid ship, and the like.
- the internal combustion engine of [I] above is filled with the lubricating oil composition of one embodiment of the present invention described above, and is a device that is installed in a hybrid system together with an electric motor.
- the method for lubricating an internal combustion engine in [II] above specifies that the lubricating oil composition of one embodiment of the present invention described above is applied to an internal combustion engine installed in a hybrid system. The composition may also be applied to electric motors.
- a lubricating oil composition containing a base oil (A), a hindered amine compound (B), and an organic zinc dithiophosphate (C) having at least one primary alkyl group.
- component (C) contains a compound (C1) represented by the following general formula (c-1).
- R c1 to R c4 are each independently a primary alkyl group.
- the content of component (C) is 0.01 to 7.0% by mass based on the total amount of the lubricating oil composition, according to any one of [1] to [3] above.
- the content of component (B) is 0.60 to 10.0% by mass based on the total amount of the lubricating oil composition, according to any one of [1] to [4] above.
- the lubricating oil composition according to any one of the above.
- Component (B) contains one or more selected from the compound (B1) represented by the following general formula (b-1) and the compound (B2) represented by the following general formula (b-2) , the lubricating oil composition according to any one of [1] to [6] above.
- R b1 is each independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms.
- R b2 is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 18 ring carbon atoms, an aryl group having 6 to 18 ring carbon atoms, a hydroxyl group, an amino group, or -O-CO- A group represented by R b3 (R b3 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms).
- Z is an alkylene group having 1 to 20 carbon atoms, a cycloalkylene group having 3 to 18 ring carbon atoms, an arylene group having 6 to 18 ring carbon atoms, an oxygen atom, a sulfur atom, or -O-CO-(CH 2 ) n is a group represented by -CO-O- (n is an integer from 1 to 20).
- D molybdenum dithiocarbamate
- antioxidant (E) that does not fall under component (B)
- component (E) contains one or more selected from amine antioxidants (E1) and phenolic antioxidants (E2), which do not fall under component (B).
- component (F) contains one or more selected from non-boron modified alkenyl succinimide (F1) and boron modified alkenyl succinimide (F2). oil composition.
- Component (F) contains component (F1) and component (F2), The lubricating oil composition according to [10] above, wherein the content ratio [(F1)/(F2)] of component (F1) and component (F2) is less than 5.00 in mass ratio.
- the lubricating oil composition according to any one of [1] to [11] above which is used for lubricating an internal combustion engine of a hybrid system.
- An internal combustion engine installed in a hybrid system filled with the lubricating oil composition according to any one of [1] to [12] above.
- a method for lubricating an internal combustion engine in which the lubricating oil composition according to any one of [1] to [12] above is applied to an internal combustion engine installed in a hybrid system.
- Copper elution resistance test Add 100 mL of the prepared lubricating oil composition as a test oil to a glass test tube (diameter 40 mm x length 300 mm), and then add a polished copper plate (25 mm x 25 mm x 1 mm). , immersed in test oil. After leaving the copper plate immersed in the test oil at an oil temperature of 140°C for 62 hours while blowing 2000 volume ppm of NOx gas into the total amount of supplied gas at a flow rate of 12 L/h, the JPI-5S was tested. -38-2003, the amount of copper eluted in the test oil (unit: mass ppm) was measured.
- ⁇ Test container internal volume 500mL ⁇ Amount of lubricating oil composition used: 300mL ⁇ NOx gas amount: 2,000 volume ppm based on the total amount of gas supplied - Amount of pure water added: 5% by volume added to the total amount of lubricating oil composition every 24 hours - Stirring speed: 800 r/min ⁇ Test temperature (cycle): (1) 60°C for 4 hours, (2) 95°C for 2 hours, (3) 120°C for 12 hours, and (4) 60°C for 6 hours (1) to (4) ) as one cycle, and the cycle was repeated.
- a hot tube test in accordance with JPI-5S-55-99 was conducted at a test temperature of 240° C. using the deteriorated oil prepared as described above.
- the degree of discoloration of the glass tube after the test was evaluated on a 21-point scale ranging from 0 (black) to 10 (colorless) (merit score) in 0.5 increments. It can be said that the higher the rating, the more excellent the lubricating oil composition is in high-temperature cleanliness. In this example, when the rating was 7.0 or higher, it was determined that the lubricating oil composition had good high-temperature detergency.
- the lubricating oil compositions prepared in Examples 1 to 7 contain components (A) to (C), so they have excellent copper elution resistance and maintain good long-drain properties for a long period of time. It is thought that it can be maintained for a long time. Furthermore, the lubricating oil compositions prepared in Examples 1 to 7 also showed excellent high-temperature cleanability. On the other hand, the lubricating oil compositions prepared in Comparative Examples 1 and 2 contain secondary zinc dialkyldithiophosphate instead of primary zinc dialkyldithiophosphate, but the amount of copper eluted exceeds 250 mass ppm. This resulted in a problem with copper elution resistance.
Abstract
Provided is a lubricant composition comprising a base oil (A), a hindered amine compound (B), and organic zinc dithiophosphate (C) having at least one primary alkyl group.
Description
本発明は、潤滑油組成物、当該潤滑油組成物を充填した内燃機関、及び、当該潤滑油組成物の使用方法に関する。
The present invention relates to a lubricating oil composition, an internal combustion engine filled with the lubricating oil composition, and a method of using the lubricating oil composition.
近年、地球規模での環境規制はますます厳しくなり、特に自動車を取り巻く状況は、燃費規制、排出ガス規制等厳しくなる一方である。この背景には地球温暖化等の環境問題と、石油資源の枯渇に対する懸念からの資源保護がある。このような近年の状況から、自動車の排気ガスによる大気汚染を低減させるために、内燃機関と共に、電動機が搭載されたハイブリッド自動車の生産比率が向上している。
ところで、ハイブリッド自動車の内燃機関の潤滑油には、従来の内燃機関のみで駆動する自動車の内燃機関用潤滑油と同じエンジン油が用いられているが、ハイブリッド自動車の使用環境に適応した内燃機関用潤滑油の開発が進められている。 In recent years, environmental regulations have become increasingly strict on a global scale, and in particular, the conditions surrounding automobiles, such as fuel efficiency regulations and exhaust gas regulations, are becoming increasingly strict. The background to this is environmental issues such as global warming and resource conservation due to concerns about the depletion of oil resources. Under these recent circumstances, in order to reduce air pollution caused by vehicle exhaust gas, the production ratio of hybrid vehicles equipped with electric motors as well as internal combustion engines has been increasing.
Incidentally, the lubricating oil for the internal combustion engine of a hybrid vehicle is the same engine oil used for the internal combustion engine of a conventional vehicle that is driven only by an internal combustion engine. Development of lubricating oil is progressing.
ところで、ハイブリッド自動車の内燃機関の潤滑油には、従来の内燃機関のみで駆動する自動車の内燃機関用潤滑油と同じエンジン油が用いられているが、ハイブリッド自動車の使用環境に適応した内燃機関用潤滑油の開発が進められている。 In recent years, environmental regulations have become increasingly strict on a global scale, and in particular, the conditions surrounding automobiles, such as fuel efficiency regulations and exhaust gas regulations, are becoming increasingly strict. The background to this is environmental issues such as global warming and resource conservation due to concerns about the depletion of oil resources. Under these recent circumstances, in order to reduce air pollution caused by vehicle exhaust gas, the production ratio of hybrid vehicles equipped with electric motors as well as internal combustion engines has been increasing.
Incidentally, the lubricating oil for the internal combustion engine of a hybrid vehicle is the same engine oil used for the internal combustion engine of a conventional vehicle that is driven only by an internal combustion engine. Development of lubricating oil is progressing.
例えば、特許文献１には、１００Ｎ水素化精製鉱油に、ヒンダードアミン化合物、アミン系酸化防止剤、金属系清浄剤、及び有機ジチオリン酸亜鉛を含有し、ヒンダードアミン化合物とアミン系酸化防止剤とを所定比で含有する、ハイブリッド自動車の内燃機関用潤滑油組成物が開示されている。
For example, Patent Document 1 discloses that a 100N hydrotreated mineral oil contains a hindered amine compound, an amine antioxidant, a metal detergent, and an organic zinc dithiophosphate, and the hindered amine compound and the amine antioxidant are mixed in a predetermined ratio. A lubricating oil composition for an internal combustion engine of a hybrid vehicle, comprising:
このような状況において、例えば、銅の溶出の抑制効果を向上させた、内燃機関及び電動機を動力源として有するハイブリッドシステムの内燃機関に好適に使用し得る、潤滑油組成物が求められている。
Under these circumstances, for example, there is a need for a lubricating oil composition that has an improved effect of suppressing copper elution and can be suitably used in an internal combustion engine of a hybrid system having an internal combustion engine and an electric motor as power sources.
本発明者らは、鋭意検討を重ねた結果、基油と共に、ヒンダードアミン系化合物及び少なくとも１つの第１級アルキル基を有する有機ジチオリン酸亜鉛を含有する潤滑油組成物とすることで、上記課題を解決し得ることを見出した。具体的には、本発明は、以下の態様を開示する。
［１］基油（Ａ）、ヒンダードアミン系化合物（Ｂ）、及び、少なくとも１つの第１級アルキル基を有する有機ジチオリン酸亜鉛（Ｃ）を含有する、潤滑油組成物。
［２］上記［１］に記載の潤滑油組成物を充填した、ハイブリッドシステムに搭載される、内燃機関。
［３］上記［１］に記載の潤滑油組成物をハイブリッドシステムに搭載される内燃機関に適用した、内燃機関の潤滑方法。 As a result of extensive studies, the present inventors have solved the above problems by creating a lubricating oil composition containing a hindered amine compound and an organic zinc dithiophosphate having at least one primary alkyl group together with a base oil. I found a solution. Specifically, the present invention discloses the following aspects.
[1] A lubricating oil composition containing a base oil (A), a hindered amine compound (B), and an organic zinc dithiophosphate (C) having at least one primary alkyl group.
[2] An internal combustion engine installed in a hybrid system, filled with the lubricating oil composition according to [1] above.
[3] A method for lubricating an internal combustion engine, in which the lubricating oil composition according to [1] above is applied to an internal combustion engine installed in a hybrid system.
［１］基油（Ａ）、ヒンダードアミン系化合物（Ｂ）、及び、少なくとも１つの第１級アルキル基を有する有機ジチオリン酸亜鉛（Ｃ）を含有する、潤滑油組成物。
［２］上記［１］に記載の潤滑油組成物を充填した、ハイブリッドシステムに搭載される、内燃機関。
［３］上記［１］に記載の潤滑油組成物をハイブリッドシステムに搭載される内燃機関に適用した、内燃機関の潤滑方法。 As a result of extensive studies, the present inventors have solved the above problems by creating a lubricating oil composition containing a hindered amine compound and an organic zinc dithiophosphate having at least one primary alkyl group together with a base oil. I found a solution. Specifically, the present invention discloses the following aspects.
[1] A lubricating oil composition containing a base oil (A), a hindered amine compound (B), and an organic zinc dithiophosphate (C) having at least one primary alkyl group.
[2] An internal combustion engine installed in a hybrid system, filled with the lubricating oil composition according to [1] above.
[3] A method for lubricating an internal combustion engine, in which the lubricating oil composition according to [1] above is applied to an internal combustion engine installed in a hybrid system.
本発明の好適な一態様の潤滑油組成物は、銅の溶出の抑制効果に優れており、長期間にわたり良好なロングドレイン性を保持し得る。また、本発明のより好適な態様の潤滑油組成物においては、銅の溶出の抑制効果と共に高温清浄性にも優れている。このような特性を有するため、本発明の一態様の潤滑油組成物は、ハイブリッドシステムの内燃機関の潤滑に好適に使用し得る。以下、銅の溶出の抑制効果を示す性能を耐銅溶出性と表現することもある。
The lubricating oil composition of a preferred embodiment of the present invention has an excellent effect of suppressing copper elution and can maintain good long-drain properties over a long period of time. Furthermore, the lubricating oil composition according to a more preferred embodiment of the present invention has an effect of suppressing copper elution and is excellent in high-temperature cleanliness. Since it has such characteristics, the lubricating oil composition of one embodiment of the present invention can be suitably used for lubricating an internal combustion engine of a hybrid system. Hereinafter, the performance showing the effect of suppressing copper elution may be expressed as copper elution resistance.
本明細書に記載された数値範囲については、上限値及び下限値を任意に組み合わせることができる。例えば、数値範囲として「好ましくは３０～１００、より好ましくは４０～８０」と記載されている場合、「３０～８０」との範囲や「４０～１００」との範囲も、本明細書に記載された数値範囲に含まれる。
また、本明細書に記載された数値範囲として、例えば「６０～１００」との記載は、「６０以上（６０又は６０超）、１００以下（１００又は１００未満）」という範囲であることを意味する。
さらに、本明細書に記載された上限値及び下限値の規定において、それぞれの選択肢の中から適宜選択して、任意に組み合わせて、下限値～上限値の数値範囲を規定することができる。
加えて、本明細書に記載された好ましい態様として記載の各種要件は複数組み合わせることができる。 Regarding the numerical ranges described in this specification, the upper and lower limits can be arbitrarily combined. For example, when a numerical range is described as "preferably 30 to 100, more preferably 40 to 80", the range of "30 to 80" and the range of "40 to 100" are also described in this specification. Included in the specified numerical range.
In addition, as a numerical range described in this specification, for example, the description "60 to 100" means a range of "60 or more (60 or more than 60) and 100 or less (100 or less than 100)". do.
Further, in defining the upper limit value and lower limit value described in this specification, the numerical range from the lower limit value to the upper limit value can be defined by appropriately selecting from each option and combining them arbitrarily.
In addition, a plurality of the various requirements described as preferred embodiments described herein can be combined.
また、本明細書に記載された数値範囲として、例えば「６０～１００」との記載は、「６０以上（６０又は６０超）、１００以下（１００又は１００未満）」という範囲であることを意味する。
さらに、本明細書に記載された上限値及び下限値の規定において、それぞれの選択肢の中から適宜選択して、任意に組み合わせて、下限値～上限値の数値範囲を規定することができる。
加えて、本明細書に記載された好ましい態様として記載の各種要件は複数組み合わせることができる。 Regarding the numerical ranges described in this specification, the upper and lower limits can be arbitrarily combined. For example, when a numerical range is described as "preferably 30 to 100, more preferably 40 to 80", the range of "30 to 80" and the range of "40 to 100" are also described in this specification. Included in the specified numerical range.
In addition, as a numerical range described in this specification, for example, the description "60 to 100" means a range of "60 or more (60 or more than 60) and 100 or less (100 or less than 100)". do.
Further, in defining the upper limit value and lower limit value described in this specification, the numerical range from the lower limit value to the upper limit value can be defined by appropriately selecting from each option and combining them arbitrarily.
In addition, a plurality of the various requirements described as preferred embodiments described herein can be combined.
本明細書において、動粘度及び粘度指数は、ＪＩＳ Ｋ２２８３：２０００に準拠して測定及び算出された値を意味する。
アルカリ金属、アルカリ土類金属、亜鉛原子（Ｚｎ）、モリブデン原子（Ｍｏ）、リン原子（Ｐ）及びホウ素原子（Ｂ）の含有量は、ＪＰＩ－５Ｓ－３８－９２に準拠して測定された値を意味する。
窒素原子（Ｎ）の含有量は、ＪＩＳ Ｋ２６０９：１９９８に準拠して測定された値を意味する。
塩基価は、ＪＩＳ Ｋ２５０１「石油製品および潤滑油－中和価試験方法」の７．に準拠して測定される塩酸法による塩基価を意味する。 In this specification, kinematic viscosity and viscosity index mean values measured and calculated in accordance with JIS K2283:2000.
The contents of alkali metals, alkaline earth metals, zinc atoms (Zn), molybdenum atoms (Mo), phosphorus atoms (P) and boron atoms (B) were measured in accordance with JPI-5S-38-92. means value.
The nitrogen atom (N) content means a value measured in accordance with JIS K2609:1998.
The base number is specified in 7. of JIS K2501 "Petroleum products and lubricating oils - Neutralization number test method". It means the base number measured by the hydrochloric acid method according to .
アルカリ金属、アルカリ土類金属、亜鉛原子（Ｚｎ）、モリブデン原子（Ｍｏ）、リン原子（Ｐ）及びホウ素原子（Ｂ）の含有量は、ＪＰＩ－５Ｓ－３８－９２に準拠して測定された値を意味する。
窒素原子（Ｎ）の含有量は、ＪＩＳ Ｋ２６０９：１９９８に準拠して測定された値を意味する。
塩基価は、ＪＩＳ Ｋ２５０１「石油製品および潤滑油－中和価試験方法」の７．に準拠して測定される塩酸法による塩基価を意味する。 In this specification, kinematic viscosity and viscosity index mean values measured and calculated in accordance with JIS K2283:2000.
The contents of alkali metals, alkaline earth metals, zinc atoms (Zn), molybdenum atoms (Mo), phosphorus atoms (P) and boron atoms (B) were measured in accordance with JPI-5S-38-92. means value.
The nitrogen atom (N) content means a value measured in accordance with JIS K2609:1998.
The base number is specified in 7. of JIS K2501 "Petroleum products and lubricating oils - Neutralization number test method". It means the base number measured by the hydrochloric acid method according to .
〔潤滑油組成物の構成〕
本発明の一態様の潤滑油組成物は、基油（Ａ）、ヒンダードアミン系化合物（Ｂ）、及び、少なくとも１つの第１級アルキル基を有する有機ジチオリン酸亜鉛（Ｃ）を含有する。 [Composition of lubricating oil composition]
The lubricating oil composition of one embodiment of the present invention contains a base oil (A), a hindered amine compound (B), and an organic zinc dithiophosphate (C) having at least one primary alkyl group.
本発明の一態様の潤滑油組成物は、基油（Ａ）、ヒンダードアミン系化合物（Ｂ）、及び、少なくとも１つの第１級アルキル基を有する有機ジチオリン酸亜鉛（Ｃ）を含有する。 [Composition of lubricating oil composition]
The lubricating oil composition of one embodiment of the present invention contains a base oil (A), a hindered amine compound (B), and an organic zinc dithiophosphate (C) having at least one primary alkyl group.
内燃機関と共に、電動機が搭載されたハイブリッド自動車の内燃機関は、従来の自動車の内燃機関に比べて、自動車を使用している際であっても停止している時間が長く、クランク室内で結露が生じ易い。そのため、ハイブリッド自動車等のハイブリッドシステムに用いられる潤滑油組成物には、水分が混入しやすく、その水分が要因でロングドレイン性の低下を引き起こしやすい。
ところで、内燃機関を構成する各種部材には、銅を含有する合金が使用されている場合もある。本発明者らの検討によれば、潤滑油組成物に、各種部材を構成する合金からの銅が溶出すると、腐食摩耗が生じる恐れがあることが分かった。
銅の溶出を抑制すべく、本発明者らは、鋭意検討し、ヒンダードアミン系化合物（Ｂ）と共に、少なくとも１つの第１級アルキル基を有する有機ジチオリン酸亜鉛（Ｃ）を併用した潤滑油組成物とすることで、上記問題が解決し得るという知見を得た。本発明の一態様の潤滑油組成物は、当該知見に基づいて完成されたものである。 The internal combustion engine of a hybrid vehicle is equipped with an electric motor as well as an internal combustion engine. Compared to the internal combustion engine of a conventional vehicle, the internal combustion engine of a hybrid vehicle is stopped for a longer period of time even when the vehicle is in use, and condensation can form inside the crankcase. Easy to occur. Therefore, lubricating oil compositions used in hybrid systems such as hybrid vehicles are likely to contain moisture, and this moisture tends to cause a decline in long-drain properties.
Incidentally, alloys containing copper are sometimes used in various members constituting internal combustion engines. According to studies conducted by the present inventors, it has been found that when copper from alloys constituting various members is eluted into a lubricating oil composition, corrosive wear may occur.
In order to suppress the elution of copper, the present inventors have made extensive studies and created a lubricating oil composition that uses zinc organic dithiophosphate (C) having at least one primary alkyl group together with a hindered amine compound (B). We have found that the above problem can be solved by doing so. A lubricating oil composition according to one embodiment of the present invention has been completed based on this knowledge.
ところで、内燃機関を構成する各種部材には、銅を含有する合金が使用されている場合もある。本発明者らの検討によれば、潤滑油組成物に、各種部材を構成する合金からの銅が溶出すると、腐食摩耗が生じる恐れがあることが分かった。
銅の溶出を抑制すべく、本発明者らは、鋭意検討し、ヒンダードアミン系化合物（Ｂ）と共に、少なくとも１つの第１級アルキル基を有する有機ジチオリン酸亜鉛（Ｃ）を併用した潤滑油組成物とすることで、上記問題が解決し得るという知見を得た。本発明の一態様の潤滑油組成物は、当該知見に基づいて完成されたものである。 The internal combustion engine of a hybrid vehicle is equipped with an electric motor as well as an internal combustion engine. Compared to the internal combustion engine of a conventional vehicle, the internal combustion engine of a hybrid vehicle is stopped for a longer period of time even when the vehicle is in use, and condensation can form inside the crankcase. Easy to occur. Therefore, lubricating oil compositions used in hybrid systems such as hybrid vehicles are likely to contain moisture, and this moisture tends to cause a decline in long-drain properties.
Incidentally, alloys containing copper are sometimes used in various members constituting internal combustion engines. According to studies conducted by the present inventors, it has been found that when copper from alloys constituting various members is eluted into a lubricating oil composition, corrosive wear may occur.
In order to suppress the elution of copper, the present inventors have made extensive studies and created a lubricating oil composition that uses zinc organic dithiophosphate (C) having at least one primary alkyl group together with a hindered amine compound (B). We have found that the above problem can be solved by doing so. A lubricating oil composition according to one embodiment of the present invention has been completed based on this knowledge.
本発明の一態様の潤滑油組成物は、さらに、ジチオカルバミン酸モリブデン（Ｄ）を含有してもよい。
本発明の一態様の潤滑油組成物は、さらに、成分（Ｂ）には該当しない酸化防止剤（Ｅ）を含有してもよい。
本発明の一態様の潤滑油組成物は、さらに、イミド化合物（Ｆ）を含有してもよい。
本発明の一態様の潤滑油組成物は、さらに、金属系清浄剤（Ｇ）を含有してもよい。
本発明の一態様の潤滑油組成物は、本発明の効果を損なわない範囲で、さらに、上記成分（Ｂ）～（Ｇ）以外の他の潤滑油用添加剤を含有してもよい。 The lubricating oil composition of one embodiment of the present invention may further contain molybdenum dithiocarbamate (D).
The lubricating oil composition of one embodiment of the present invention may further contain an antioxidant (E) that does not fall under component (B).
The lubricating oil composition of one embodiment of the present invention may further contain an imide compound (F).
The lubricating oil composition of one embodiment of the present invention may further contain a metal-based detergent (G).
The lubricating oil composition of one embodiment of the present invention may further contain other lubricating oil additives other than the above-mentioned components (B) to (G) within a range that does not impair the effects of the present invention.
本発明の一態様の潤滑油組成物は、さらに、成分（Ｂ）には該当しない酸化防止剤（Ｅ）を含有してもよい。
本発明の一態様の潤滑油組成物は、さらに、イミド化合物（Ｆ）を含有してもよい。
本発明の一態様の潤滑油組成物は、さらに、金属系清浄剤（Ｇ）を含有してもよい。
本発明の一態様の潤滑油組成物は、本発明の効果を損なわない範囲で、さらに、上記成分（Ｂ）～（Ｇ）以外の他の潤滑油用添加剤を含有してもよい。 The lubricating oil composition of one embodiment of the present invention may further contain molybdenum dithiocarbamate (D).
The lubricating oil composition of one embodiment of the present invention may further contain an antioxidant (E) that does not fall under component (B).
The lubricating oil composition of one embodiment of the present invention may further contain an imide compound (F).
The lubricating oil composition of one embodiment of the present invention may further contain a metal-based detergent (G).
The lubricating oil composition of one embodiment of the present invention may further contain other lubricating oil additives other than the above-mentioned components (B) to (G) within a range that does not impair the effects of the present invention.
本発明の一態様の潤滑油組成物において、成分（Ａ）、（Ｂ）及び（Ｃ）の合計含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは５０質量％以上、より好ましくは６０質量％以上、更に好ましくは６５質量％以上、より更に好ましくは７０質量％以上、特に好ましくは７５質量％以上であり、また、１００質量％以下、９９．９９質量％以下、９９．９０質量％以下、９９．５０質量％以下、９９．０質量％以下、９８．０質量％以下、９７．０質量％以下、９５．０質量％以下、９２．０質量％以下、又は９１．０質量％以下としてもよい。
In the lubricating oil composition of one aspect of the present invention, the total content of components (A), (B), and (C) is preferably 50% by mass based on the total amount (100% by mass) of the lubricating oil composition. More preferably 60% by mass or more, still more preferably 65% by mass or more, even more preferably 70% by mass or more, particularly preferably 75% by mass or more, and 100% by mass or less, 99.99% by mass or less , 99.90% by mass or less, 99.50% by mass or less, 99.0% by mass or less, 98.0% by mass or less, 97.0% by mass or less, 95.0% by mass or less, 92.0% by mass or less, Alternatively, it may be 91.0% by mass or less.
本発明の一態様の潤滑油組成物において、成分（Ａ）、（Ｂ）、（Ｃ）、（Ｄ）、（Ｅ）、（Ｆ）及び（Ｇ）の合計含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは６０質量％以上、より好ましくは６５質量％以上、更に好ましくは７０質量％以上、より更に好ましくは７５質量％以上、特に好ましくは８０質量％以上であり、また、１００質量％以下、９９．９９質量％以下、９９．９０質量％以下、９９．５０質量％以下、又は９９．０質量％以下としてもよい。
In the lubricating oil composition of one aspect of the present invention, the total content of components (A), (B), (C), (D), (E), (F), and (G) is Based on the total amount (100% by mass) of the product, preferably 60% by mass or more, more preferably 65% by mass or more, even more preferably 70% by mass or more, even more preferably 75% by mass or more, particularly preferably 80% by mass or more. The content may also be 100% by mass or less, 99.99% by mass or less, 99.90% by mass or less, 99.50% by mass or less, or 99.0% by mass or less.
以下、本発明の一態様の潤滑油組成物に含まれる各成分の詳細について説明する。
Hereinafter, details of each component contained in the lubricating oil composition of one embodiment of the present invention will be explained.
＜成分（Ａ）：基油＞
本発明の一態様の潤滑油組成物において、成分（Ａ）として用いる基油は、鉱油及び合成油から選ばれる１種以上が挙げられる。
鉱油としては、例えば、パラフィン基原油、中間基系原油、ナフテン基原油等の原油を常圧蒸留して得られる常圧残油；これらの常圧残油を減圧蒸留して得られる留出油；当該留出油を、溶剤脱れき、溶剤抽出、水素化分解、溶剤脱ろう、接触脱ろう、及び水素化精製等の精製処理を１つ以上施して得られる精製油；等が挙げられる。 <Component (A): Base oil>
In the lubricating oil composition of one embodiment of the present invention, the base oil used as component (A) may be one or more selected from mineral oils and synthetic oils.
Mineral oils include, for example, atmospheric residual oils obtained by atmospheric distillation of crude oils such as paraffinic crude oils, intermediate crude oils, and naphthenic crude oils; and distillate oils obtained by vacuum distillation of these atmospheric residual oils. Refined oil obtained by subjecting the distillate to one or more refining treatments such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, and hydrorefining; and the like.
本発明の一態様の潤滑油組成物において、成分（Ａ）として用いる基油は、鉱油及び合成油から選ばれる１種以上が挙げられる。
鉱油としては、例えば、パラフィン基原油、中間基系原油、ナフテン基原油等の原油を常圧蒸留して得られる常圧残油；これらの常圧残油を減圧蒸留して得られる留出油；当該留出油を、溶剤脱れき、溶剤抽出、水素化分解、溶剤脱ろう、接触脱ろう、及び水素化精製等の精製処理を１つ以上施して得られる精製油；等が挙げられる。 <Component (A): Base oil>
In the lubricating oil composition of one embodiment of the present invention, the base oil used as component (A) may be one or more selected from mineral oils and synthetic oils.
Mineral oils include, for example, atmospheric residual oils obtained by atmospheric distillation of crude oils such as paraffinic crude oils, intermediate crude oils, and naphthenic crude oils; and distillate oils obtained by vacuum distillation of these atmospheric residual oils. Refined oil obtained by subjecting the distillate to one or more refining treatments such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, and hydrorefining; and the like.
合成油としては、例えば、α－オレフィン単独重合体、又はα－オレフィン共重合体（例えば、エチレン－α－オレフィン共重合体等の炭素数８～１４のα－オレフィン共重合体）等のポリα－オレフィン；イソパラフィン；ポリアルキレングリコール；ポリオールエステル、二塩基酸エステル、リン酸エステル等のエステル系油；ポリフェニルエーテル等のエーテル系油；アルキルベンゼン；アルキルナフタレン；天然ガスからフィッシャー・トロプシュ法等により製造されるワックス（ＧＴＬワックス（Gas To Liquids WAX））を異性化することで得られる合成油（ＧＴＬ）等が挙げられる。
Synthetic oils include, for example, polyolefins such as α-olefin homopolymers or α-olefin copolymers (for example, α-olefin copolymers having 8 to 14 carbon atoms such as ethylene-α-olefin copolymers). α-olefins; isoparaffins; polyalkylene glycols; ester oils such as polyol esters, dibasic acid esters, and phosphoric acid esters; ether oils such as polyphenyl ethers; alkylbenzenes; alkylnaphthalenes; Examples include synthetic oil (GTL) obtained by isomerizing manufactured wax (GTL wax (Gas To Liquids WAX)).
本発明の一態様で用いる成分（Ａ）は、ＡＰＩ（米国石油協会）基油カテゴリーのグループII及びグループIIIに分類される鉱油、並びに合成油から選ばれる１種以上であることが好ましい。
Component (A) used in one embodiment of the present invention is preferably one or more selected from mineral oils and synthetic oils classified into Group II and Group III of the API (American Petroleum Institute) base oil category.
本発明の一態様で用いる成分（Ａ）の４０℃における動粘度は、好ましくは３．０～１２０ｍｍ２／ｓ、より好ましくは３．５～１００ｍｍ２／ｓ、更に好ましくは４．０～７０ｍｍ２／ｓ、より更に好ましくは４．５～５０ｍｍ２／ｓ、特に好ましくは５．０～３０ｍｍ２／ｓである。
The kinematic viscosity at 40°C of component (A) used in one aspect of the present invention is preferably 3.0 to 120 mm 2 /s, more preferably 3.5 to 100 mm 2 /s, and still more preferably 4.0 to 70 mm. 2 /s, more preferably 4.5 to 50 mm 2 /s, particularly preferably 5.0 to 30 mm 2 /s.
本発明の一態様で用いる成分（Ａ）の粘度指数は、好ましくは７０以上、より好ましくは９０以上、更に好ましくは１００以上、より更に好ましくは１１０以上、特に好ましくは１２０以上である。
なお、本発明の一態様において、成分（Ａ）として、２種以上の基油を組み合わせた混合油を用いる場合、当該混合油の動粘度及び粘度指数が上記範囲であることが好ましい。 The viscosity index of component (A) used in one aspect of the present invention is preferably 70 or more, more preferably 90 or more, even more preferably 100 or more, even more preferably 110 or more, particularly preferably 120 or more.
In addition, in one aspect of the present invention, when a mixed oil that is a combination of two or more base oils is used as component (A), it is preferable that the kinematic viscosity and viscosity index of the mixed oil are within the above ranges.
なお、本発明の一態様において、成分（Ａ）として、２種以上の基油を組み合わせた混合油を用いる場合、当該混合油の動粘度及び粘度指数が上記範囲であることが好ましい。 The viscosity index of component (A) used in one aspect of the present invention is preferably 70 or more, more preferably 90 or more, even more preferably 100 or more, even more preferably 110 or more, particularly preferably 120 or more.
In addition, in one aspect of the present invention, when a mixed oil that is a combination of two or more base oils is used as component (A), it is preferable that the kinematic viscosity and viscosity index of the mixed oil are within the above ranges.
本発明の一態様の潤滑油組成物において、成分（Ａ）の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは４０質量％以上、より好ましくは５０質量％以上、更に好ましくは６０質量％以上、より更に好ましくは６５質量％以上、特に好ましくは７０質量％以上であり、さらに、７５質量％以上、又は８０質量％以上としてもよく、また、９９．４質量％以下、９９．０質量％以下、９７．０質量％以下、９５．０質量％以下、９２．０質量％以下、又は９０．０質量％以下としてもよい。
In the lubricating oil composition of one aspect of the present invention, the content of component (A) is preferably 40% by mass or more, more preferably 50% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. , more preferably 60% by mass or more, even more preferably 65% by mass or more, particularly preferably 70% by mass or more, furthermore, it may be 75% by mass or more, or 80% by mass or more, and 99.4% by mass % or less, 99.0 mass% or less, 97.0 mass% or less, 95.0 mass% or less, 92.0 mass% or less, or 90.0 mass% or less.
＜成分（Ｂ）：ヒンダードアミン系化合物＞
本発明の一態様の潤滑油組成物は、成分（Ｂ）として、ヒンダードアミン系化合物を含有する。成分（Ｂ）を含有することで、ロングドレイン性を向上させた潤滑油組成物とすることができる。
本発明の一態様で用いる成分（Ｂ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (B): Hindered amine compound>
The lubricating oil composition of one embodiment of the present invention contains a hindered amine compound as component (B). By containing component (B), a lubricating oil composition with improved long drain properties can be obtained.
Component (B) used in one aspect of the present invention may be used alone or in combination of two or more.
本発明の一態様の潤滑油組成物は、成分（Ｂ）として、ヒンダードアミン系化合物を含有する。成分（Ｂ）を含有することで、ロングドレイン性を向上させた潤滑油組成物とすることができる。
本発明の一態様で用いる成分（Ｂ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (B): Hindered amine compound>
The lubricating oil composition of one embodiment of the present invention contains a hindered amine compound as component (B). By containing component (B), a lubricating oil composition with improved long drain properties can be obtained.
Component (B) used in one aspect of the present invention may be used alone or in combination of two or more.
本発明の一態様において、成分（Ｂ）として用いるヒンダードアミン系化合物としては、下記式（ｂ－０）で表される構造を含む化合物であればよい。
上記式中、＊１及び＊２は、他の原子との結合位置を示す。
In one embodiment of the present invention, the hindered amine compound used as component (B) may be any compound containing a structure represented by the following formula (b-0).
In the above formula, *1 and *2 indicate bonding positions with other atoms.
本発明の一態様で用いる成分（Ｂ）は、下記一般式（ｂ－１）で表される化合物（Ｂ１）及び下記一般式（ｂ－２）で表される化合物（Ｂ２）から選ばれる１種以上を含むことが好ましい。
Component (B) used in one embodiment of the present invention is 1 selected from a compound (B1) represented by the following general formula (b-1) and a compound (B2) represented by the following general formula (b-2). It is preferable to include more than one species.
上記一般式（ｂ－１）及び（ｂ－２）中、Ｒｂ１は、それぞれ独立に、水素原子、炭素数１～１０のアルキル基、又は炭素数１～１０のアルコキシ基である。
上記一般式（ｂ－１）中、Ｒｂ２は、水素原子、炭素数１～２０のアルキル基、環形成炭素数３～１８のシクロアルキル基、環形成炭素数６～１８のアリール基、水酸基、アミノ基、又は－Ｏ－ＣＯ－Ｒｂ３で表される基（Ｒｂ３は、水素原子又は炭素数１～２０の炭化水素基）である。
上記一般式（ｂ－２）中、Ｚは、炭素数１～２０のアルキレン基、環形成炭素数３～１８のシクロアルキレン基、環形成炭素数６～１８のアリーレン基、酸素原子、硫黄原子、又は－Ｏ－ＣＯ－（ＣＨ２）ｎ－ＣＯ－Ｏ－で表される基（ｎは１～２０の整数）である。 In the above general formulas (b-1) and (b-2), R b1 is each independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms.
In the above general formula (b-1), R b2 is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 18 ring carbon atoms, an aryl group having 6 to 18 ring carbon atoms, or a hydroxyl group. , an amino group, or a group represented by -O-CO-R b3 (R b3 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms).
In the above general formula (b-2), Z is an alkylene group having 1 to 20 carbon atoms, a cycloalkylene group having 3 to 18 ring carbon atoms, an arylene group having 6 to 18 ring carbon atoms, an oxygen atom, or a sulfur atom. , or a group represented by -O-CO-(CH 2 ) n -CO-O- (n is an integer of 1 to 20).
上記一般式（ｂ－１）中、Ｒｂ２は、水素原子、炭素数１～２０のアルキル基、環形成炭素数３～１８のシクロアルキル基、環形成炭素数６～１８のアリール基、水酸基、アミノ基、又は－Ｏ－ＣＯ－Ｒｂ３で表される基（Ｒｂ３は、水素原子又は炭素数１～２０の炭化水素基）である。
上記一般式（ｂ－２）中、Ｚは、炭素数１～２０のアルキレン基、環形成炭素数３～１８のシクロアルキレン基、環形成炭素数６～１８のアリーレン基、酸素原子、硫黄原子、又は－Ｏ－ＣＯ－（ＣＨ２）ｎ－ＣＯ－Ｏ－で表される基（ｎは１～２０の整数）である。 In the above general formulas (b-1) and (b-2), R b1 is each independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms.
In the above general formula (b-1), R b2 is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 18 ring carbon atoms, an aryl group having 6 to 18 ring carbon atoms, or a hydroxyl group. , an amino group, or a group represented by -O-CO-R b3 (R b3 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms).
In the above general formula (b-2), Z is an alkylene group having 1 to 20 carbon atoms, a cycloalkylene group having 3 to 18 ring carbon atoms, an arylene group having 6 to 18 ring carbon atoms, an oxygen atom, or a sulfur atom. , or a group represented by -O-CO-(CH 2 ) n -CO-O- (n is an integer of 1 to 20).
Ｒｂ１として選択し得る、前記アルキル基としては、例えば、メチル基、エチル基、プロピル基（ｎ－プロピル基、イソプロピル基）、ブチル基（ｎ－ブチル基、ｓ－ブチル基、ｔ－ブチル基、イソブチル基）、ペンチル基、ヘキシル基、２－エチルヘキシル基、ヘプチル基、オクチル基、ノニル基、デシル基等が挙げられる。当該アルキル基は、直鎖アルキル基であってもよく、分岐鎖アルキル基であってもよい。
Ｒｂ１として選択し得る、前記アルキル基の炭素数は、好ましくは１～１０、より好ましくは１～６、更に好ましくは１～３である。 Examples of the alkyl group that can be selected as R b1 include methyl group, ethyl group, propyl group (n-propyl group, isopropyl group), butyl group (n-butyl group, s-butyl group, t-butyl group). , isobutyl group), pentyl group, hexyl group, 2-ethylhexyl group, heptyl group, octyl group, nonyl group, decyl group, etc. The alkyl group may be a straight-chain alkyl group or a branched-chain alkyl group.
The number of carbon atoms in the alkyl group that can be selected as R b1 is preferably 1 to 10, more preferably 1 to 6, and still more preferably 1 to 3.
Ｒｂ１として選択し得る、前記アルキル基の炭素数は、好ましくは１～１０、より好ましくは１～６、更に好ましくは１～３である。 Examples of the alkyl group that can be selected as R b1 include methyl group, ethyl group, propyl group (n-propyl group, isopropyl group), butyl group (n-butyl group, s-butyl group, t-butyl group). , isobutyl group), pentyl group, hexyl group, 2-ethylhexyl group, heptyl group, octyl group, nonyl group, decyl group, etc. The alkyl group may be a straight-chain alkyl group or a branched-chain alkyl group.
The number of carbon atoms in the alkyl group that can be selected as R b1 is preferably 1 to 10, more preferably 1 to 6, and still more preferably 1 to 3.
Ｒｂ１として選択し得る、前記アルコキシ基としては、例えば、メトキシ基、エトキシ基、プロポキシ基（ｎ－プロポキシ基、イソプロポキシ基）、ブトキシ基（ｎ－ブトキシ基、ｓ－ブトキシ基、ｔ－ブトキシ基、イソブトキシ基）、ペンチルオキシ基、ヘキシルオキシ基、２－エチルヘキシルオキシ基、ヘプチルオキシ基、オクチルオキシ基、ノニルオキシ基、デシルオキシ基、－（ＣＨ２）ｎ－で表される基（ｎは１～２０の整数）等が挙げられる。当該アルコキシ基は、直鎖アルコキシ基であってもよく、分岐鎖アルコキシ基であってもよい。
Ｒｂ１として選択し得る、前記アルコキシ基の炭素数は、好ましくは１～１０、より好ましくは１～６、更に好ましくは１～３である。 Examples of the alkoxy group that can be selected as R b1 include methoxy group, ethoxy group, propoxy group (n-propoxy group, isopropoxy group), butoxy group (n-butoxy group, s-butoxy group, t-butoxy group). group, isobutoxy group), pentyloxy group, hexyloxy group, 2-ethylhexyloxy group, heptyloxy group, octyloxy group, nonyloxy group, decyloxy group, -(CH 2 ) n - (n is 1 -20 integers), etc. The alkoxy group may be a straight-chain alkoxy group or a branched-chain alkoxy group.
The number of carbon atoms in the alkoxy group that can be selected as R b1 is preferably 1 to 10, more preferably 1 to 6, and still more preferably 1 to 3.
Ｒｂ１として選択し得る、前記アルコキシ基の炭素数は、好ましくは１～１０、より好ましくは１～６、更に好ましくは１～３である。 Examples of the alkoxy group that can be selected as R b1 include methoxy group, ethoxy group, propoxy group (n-propoxy group, isopropoxy group), butoxy group (n-butoxy group, s-butoxy group, t-butoxy group). group, isobutoxy group), pentyloxy group, hexyloxy group, 2-ethylhexyloxy group, heptyloxy group, octyloxy group, nonyloxy group, decyloxy group, -(CH 2 ) n - (n is 1 -20 integers), etc. The alkoxy group may be a straight-chain alkoxy group or a branched-chain alkoxy group.
The number of carbon atoms in the alkoxy group that can be selected as R b1 is preferably 1 to 10, more preferably 1 to 6, and still more preferably 1 to 3.
Ｒｂ２として選択し得る、前記アルキル基としては、Ｒｂ１として選択し得る上述の炭素数１～１０のアルキル基に加えて、例えば、ウンデシル基、ドデシル基、トリデシル、テトラデシル基、ヘキサデシル基、オクタデシル基等が挙げられる。当該アルキル基は、直鎖アルキル基であってもよく、分岐鎖アルキル基であってもよい。
Ｒｂ２として選択し得る、前記アルキル基の炭素数は、好ましくは１～２０、より好ましくは３～１８、更に好ましくは６～１６、より更に好ましくは８～１４である。 Examples of the alkyl group that can be selected as R b2 include, in addition to the above-mentioned alkyl groups having 1 to 10 carbon atoms that can be selected as R b1 , for example, undecyl group, dodecyl group, tridecyl, tetradecyl group, hexadecyl group, octadecyl group. Examples include groups. The alkyl group may be a straight-chain alkyl group or a branched-chain alkyl group.
The number of carbon atoms in the alkyl group that can be selected as R b2 is preferably 1 to 20, more preferably 3 to 18, still more preferably 6 to 16, even more preferably 8 to 14.
Ｒｂ２として選択し得る、前記アルキル基の炭素数は、好ましくは１～２０、より好ましくは３～１８、更に好ましくは６～１６、より更に好ましくは８～１４である。 Examples of the alkyl group that can be selected as R b2 include, in addition to the above-mentioned alkyl groups having 1 to 10 carbon atoms that can be selected as R b1 , for example, undecyl group, dodecyl group, tridecyl, tetradecyl group, hexadecyl group, octadecyl group. Examples include groups. The alkyl group may be a straight-chain alkyl group or a branched-chain alkyl group.
The number of carbon atoms in the alkyl group that can be selected as R b2 is preferably 1 to 20, more preferably 3 to 18, still more preferably 6 to 16, even more preferably 8 to 14.
Ｒｂ２として選択し得る、前記シクロアルキル基としては、例えば、シクロプロピル基、シクロブチル基、シクロペンチル基、シクロヘキシル基、シクロヘプチル基、シクロオクチル基、アダマンチル基等が挙げられる。
Ｒｂ２として選択し得る、前記シクロアルキル基の環形成炭素数は、好ましくは３～１８、より好ましくは５～１５、更に好ましくは６～１２である。 Examples of the cycloalkyl group that can be selected as R b2 include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, and an adamantyl group.
The number of ring carbon atoms in the cycloalkyl group that can be selected as R b2 is preferably 3 to 18, more preferably 5 to 15, and still more preferably 6 to 12.
Ｒｂ２として選択し得る、前記シクロアルキル基の環形成炭素数は、好ましくは３～１８、より好ましくは５～１５、更に好ましくは６～１２である。 Examples of the cycloalkyl group that can be selected as R b2 include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, and an adamantyl group.
The number of ring carbon atoms in the cycloalkyl group that can be selected as R b2 is preferably 3 to 18, more preferably 5 to 15, and still more preferably 6 to 12.
Ｒｂ２として選択し得る、前記アリール基としては、例えば、フェニル基、ナフチル基、アントリル基、フェナントリル基、ビフェニル基、ターフェニル基、フェニルナフチル基等が挙げられる。
Ｒｂ２として選択し得る、前記アリール基の環形成炭素数は、好ましくは６～１８、より好ましくは６～１５、更に好ましくは６～１２である。 Examples of the aryl group that can be selected as R b2 include a phenyl group, a naphthyl group, an anthryl group, a phenanthryl group, a biphenyl group, a terphenyl group, a phenylnaphthyl group, and the like.
The number of ring carbon atoms in the aryl group that can be selected as R b2 is preferably 6 to 18, more preferably 6 to 15, and still more preferably 6 to 12.
Ｒｂ２として選択し得る、前記アリール基の環形成炭素数は、好ましくは６～１８、より好ましくは６～１５、更に好ましくは６～１２である。 Examples of the aryl group that can be selected as R b2 include a phenyl group, a naphthyl group, an anthryl group, a phenanthryl group, a biphenyl group, a terphenyl group, a phenylnaphthyl group, and the like.
The number of ring carbon atoms in the aryl group that can be selected as R b2 is preferably 6 to 18, more preferably 6 to 15, and still more preferably 6 to 12.
Ｚとして選択し得る、前記アルキレン基としては、例えば、メチレン基、１，１－エチレン基、１，２－エチレン基、１，３－プロピレン、１，２－プロピレン、２，２－プロピレン等の各種プロピレン基、各種ブチレン基、各種ペンチレン基、各種ヘキシレン基、各種へプチレン基、各種オクチレン基、各種ノニレン基、各種デシレン基、各種ウンデシレン基、各種ドデシレン基、各種トリデシレン基、各種テトラデシレン基、各種ペンタデシレン基、各種ヘキサデシレン基、各種ヘプタデシレン基、各種オクタデシレン基等が挙げられる。
Ｚとして選択し得る、シクロアルキレン基としては、例えば、シクロプロピレン基、シクロブチレン基、シクロペンチレン基、シクロヘキシレン基、シクロヘプチレン基、シクロオクチレン基、アダマンチレン基等が挙げられる。
Ｚとして選択し得る、前記アリーレン基としては、例えば、フェニレン基、ナフチレン基、アントリレン基、フェナントリレン基、ビフェニレン基、ターフェニレン基等が挙げられる。 Examples of the alkylene group that can be selected as Z include methylene group, 1,1-ethylene group, 1,2-ethylene group, 1,3-propylene, 1,2-propylene, 2,2-propylene, etc. Various propylene groups, various butylene groups, various pentylene groups, various hexylene groups, various heptylene groups, various octylene groups, various nonylene groups, various decylene groups, various undecylene groups, various dodecylene groups, various tridecylene groups, various tetradecylene groups, various Examples include pentadecylene groups, various hexadecylene groups, various heptadecylene groups, and various octadecylene groups.
Examples of the cycloalkylene group that can be selected as Z include a cyclopropylene group, a cyclobutylene group, a cyclopentylene group, a cyclohexylene group, a cycloheptylene group, a cyclooctylene group, and an adamantylene group.
Examples of the arylene group that can be selected as Z include a phenylene group, a naphthylene group, an anthrylene group, a phenanthrylene group, a biphenylene group, and a terphenylene group.
Ｚとして選択し得る、シクロアルキレン基としては、例えば、シクロプロピレン基、シクロブチレン基、シクロペンチレン基、シクロヘキシレン基、シクロヘプチレン基、シクロオクチレン基、アダマンチレン基等が挙げられる。
Ｚとして選択し得る、前記アリーレン基としては、例えば、フェニレン基、ナフチレン基、アントリレン基、フェナントリレン基、ビフェニレン基、ターフェニレン基等が挙げられる。 Examples of the alkylene group that can be selected as Z include methylene group, 1,1-ethylene group, 1,2-ethylene group, 1,3-propylene, 1,2-propylene, 2,2-propylene, etc. Various propylene groups, various butylene groups, various pentylene groups, various hexylene groups, various heptylene groups, various octylene groups, various nonylene groups, various decylene groups, various undecylene groups, various dodecylene groups, various tridecylene groups, various tetradecylene groups, various Examples include pentadecylene groups, various hexadecylene groups, various heptadecylene groups, and various octadecylene groups.
Examples of the cycloalkylene group that can be selected as Z include a cyclopropylene group, a cyclobutylene group, a cyclopentylene group, a cyclohexylene group, a cycloheptylene group, a cyclooctylene group, and an adamantylene group.
Examples of the arylene group that can be selected as Z include a phenylene group, a naphthylene group, an anthrylene group, a phenanthrylene group, a biphenylene group, and a terphenylene group.
本発明の一態様で用いる成分（Ｂ）は、下記一般式（ｂ－１１）で表される化合物（Ｂ１１）及び下記一般式（ｂ－２１）で表される化合物（Ｂ２１）から選ばれる１種以上を含むことがより好ましい。
Component (B) used in one embodiment of the present invention is selected from a compound (B11) represented by the following general formula (b-11) and a compound (B21) represented by the following general formula (b-21). It is more preferable to include more than one species.
上記一般式（ｂ－１１）及び（ｂ－２１）中、Ｒｂ１は、それぞれ独立に、水素原子又は炭素数１～１０のアルキル基である。Ｒｂ１として選択し得る、当該アルキル基の具体例及び好適な炭素数の範囲は、上述のとおりである。
上記一般式（ｂ－１１）中、Ｒｂ３は、水素原子又は炭素数１～２０の炭化水素基である。
上記一般式（ｂ－２１）中、ｎは、１～２０の整数である。 In the above general formulas (b-11) and (b-21), R b1 is each independently a hydrogen atom or an alkyl group having 1 to 10 carbon atoms. Specific examples of the alkyl group that can be selected as R b1 and the preferred range of the number of carbon atoms are as described above.
In the above general formula (b-11), R b3 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.
In the above general formula (b-21), n is an integer of 1 to 20.
上記一般式（ｂ－１１）中、Ｒｂ３は、水素原子又は炭素数１～２０の炭化水素基である。
上記一般式（ｂ－２１）中、ｎは、１～２０の整数である。 In the above general formulas (b-11) and (b-21), R b1 is each independently a hydrogen atom or an alkyl group having 1 to 10 carbon atoms. Specific examples of the alkyl group that can be selected as R b1 and the preferred range of the number of carbon atoms are as described above.
In the above general formula (b-11), R b3 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.
In the above general formula (b-21), n is an integer of 1 to 20.
Ｒｂ３として選択し得る、前記炭化水素基としては、炭素数１～２０のアルキル基、炭素数２～２０のアルケニル基、炭素数１～１０のアルキル基で置換されていてもよい環形成炭素数３～１８のシクロアルキル基、炭素数１～１０のアルキル基で置換されていてもよい環形成炭素数６～１８のアリール基、及び炭素数７～１９のアリールアルキル基等が挙げられる。
なお、前記アルキル基は、直鎖アルキル基であってもよく、分岐鎖アルキル基であってもよい。また、前記アルケニル基は、直鎖アルケニル基であってもよく、分岐鎖アルケニル基であってもよい。 The hydrocarbon group that can be selected as R b3 includes a ring-forming carbon group optionally substituted with an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, and an alkyl group having 1 to 10 carbon atoms. Examples include a cycloalkyl group having 3 to 18 carbon atoms, an aryl group having 6 to 18 ring carbon atoms which may be substituted with an alkyl group having 1 to 10 carbon atoms, and an arylalkyl group having 7 to 19 carbon atoms.
Note that the alkyl group may be a straight-chain alkyl group or a branched-chain alkyl group. Further, the alkenyl group may be a straight chain alkenyl group or a branched chain alkenyl group.
なお、前記アルキル基は、直鎖アルキル基であってもよく、分岐鎖アルキル基であってもよい。また、前記アルケニル基は、直鎖アルケニル基であってもよく、分岐鎖アルケニル基であってもよい。 The hydrocarbon group that can be selected as R b3 includes a ring-forming carbon group optionally substituted with an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, and an alkyl group having 1 to 10 carbon atoms. Examples include a cycloalkyl group having 3 to 18 carbon atoms, an aryl group having 6 to 18 ring carbon atoms which may be substituted with an alkyl group having 1 to 10 carbon atoms, and an arylalkyl group having 7 to 19 carbon atoms.
Note that the alkyl group may be a straight-chain alkyl group or a branched-chain alkyl group. Further, the alkenyl group may be a straight chain alkenyl group or a branched chain alkenyl group.
Ｒｂ３として選択し得る、前記アルキル基、前記シクロアルキル基、及び前記アリール基としては、Ｒｂ２として選択し得る、アルキル基、シクロアルキル基、及びアリール基と同じ基が例示される。
Ｒｂ３として選択し得る、前記アルケニル基としては、例えば、エテニル基（ビニル基）、プロぺニル基、ブテニル基、ペンテニル基、ヘキセニル基、ヘプテニル基、オクテニル基、ノネニル基、デセニル基、ドデセニル基、トリデセニル基、テトラデセニル基、ペンタデセニル基、ヘキサデセニル基、オクタデセニル基（オレイル基）等が挙げられる。
Ｒｂ３として選択し得る、前記アリールアルキル基としては、例えば、フェニルメチル基、フェニルエチル基、ナフチルメチル基、ナフチルエチル基等が挙げられる。 Examples of the alkyl group, cycloalkyl group, and aryl group that can be selected as R b3 include the same groups as the alkyl group, cycloalkyl group, and aryl group that can be selected as R b2 .
Examples of the alkenyl group that can be selected as R b3 include ethenyl group (vinyl group), propenyl group, butenyl group, pentenyl group, hexenyl group, heptenyl group, octenyl group, nonenyl group, decenyl group, dodecenyl group. , tridecenyl group, tetradecenyl group, pentadecenyl group, hexadecenyl group, octadecenyl group (oleyl group), and the like.
Examples of the arylalkyl group that can be selected as R b3 include phenylmethyl group, phenylethyl group, naphthylmethyl group, naphthylethyl group, and the like.
Ｒｂ３として選択し得る、前記アルケニル基としては、例えば、エテニル基（ビニル基）、プロぺニル基、ブテニル基、ペンテニル基、ヘキセニル基、ヘプテニル基、オクテニル基、ノネニル基、デセニル基、ドデセニル基、トリデセニル基、テトラデセニル基、ペンタデセニル基、ヘキサデセニル基、オクタデセニル基（オレイル基）等が挙げられる。
Ｒｂ３として選択し得る、前記アリールアルキル基としては、例えば、フェニルメチル基、フェニルエチル基、ナフチルメチル基、ナフチルエチル基等が挙げられる。 Examples of the alkyl group, cycloalkyl group, and aryl group that can be selected as R b3 include the same groups as the alkyl group, cycloalkyl group, and aryl group that can be selected as R b2 .
Examples of the alkenyl group that can be selected as R b3 include ethenyl group (vinyl group), propenyl group, butenyl group, pentenyl group, hexenyl group, heptenyl group, octenyl group, nonenyl group, decenyl group, dodecenyl group. , tridecenyl group, tetradecenyl group, pentadecenyl group, hexadecenyl group, octadecenyl group (oleyl group), and the like.
Examples of the arylalkyl group that can be selected as R b3 include phenylmethyl group, phenylethyl group, naphthylmethyl group, naphthylethyl group, and the like.
これらの中でも、Ｒｂ３は、炭素数１～２０のアルキル基又は炭素数２～２０のアルケニル基であることが好ましく、炭素数１～２０のアルキル基であることがより好ましい。
Ｒｂ３として選択し得る、前記アルキル基の炭素数は、好ましくは３～２０、より好ましくは４～１８、更に好ましくは６～１６、より更に好ましくは８～１４である。
Ｒｂ３として選択し得る、前記アルケニル基の炭素数は、好ましくは２～２０、より好ましくは３～１８、更に好ましくは６～１６である。 Among these, R b3 is preferably an alkyl group having 1 to 20 carbon atoms or an alkenyl group having 2 to 20 carbon atoms, and more preferably an alkyl group having 1 to 20 carbon atoms.
The number of carbon atoms in the alkyl group that can be selected as R b3 is preferably 3 to 20, more preferably 4 to 18, still more preferably 6 to 16, even more preferably 8 to 14.
The alkenyl group that can be selected as R b3 preferably has 2 to 20 carbon atoms, more preferably 3 to 18 carbon atoms, and still more preferably 6 to 16 carbon atoms.
Ｒｂ３として選択し得る、前記アルキル基の炭素数は、好ましくは３～２０、より好ましくは４～１８、更に好ましくは６～１６、より更に好ましくは８～１４である。
Ｒｂ３として選択し得る、前記アルケニル基の炭素数は、好ましくは２～２０、より好ましくは３～１８、更に好ましくは６～１６である。 Among these, R b3 is preferably an alkyl group having 1 to 20 carbon atoms or an alkenyl group having 2 to 20 carbon atoms, and more preferably an alkyl group having 1 to 20 carbon atoms.
The number of carbon atoms in the alkyl group that can be selected as R b3 is preferably 3 to 20, more preferably 4 to 18, still more preferably 6 to 16, even more preferably 8 to 14.
The alkenyl group that can be selected as R b3 preferably has 2 to 20 carbon atoms, more preferably 3 to 18 carbon atoms, and still more preferably 6 to 16 carbon atoms.
本発明の一態様で用いる成分（Ｂ）は、高温清浄性を向上させた潤滑油組成物とする観点から、前記一般式（ｂ－１）で表される化合物（Ｂ１）を少なくとも含むことが好ましく、前記一般式（ｂ－１１）で表される化合物（Ｂ１１）を少なくとも含むことがより好ましい。
本発明の一態様の潤滑油組成物において、成分（Ｂ）中の成分（Ｂ１）又は（Ｂ１１）の含有割合は、当該潤滑油組成物に含まれる成分（Ｂ）の全量（１００質量％）基準で、高温清浄性をより向上させた潤滑油組成物とする観点から、好ましくは４０～１００質量％以上、より好ましくは５０～１００質量％、より好ましくは６０～１００質量％、更に好ましくは７０～１００質量％、更に好ましくは８０～１００質量％、より更に好ましくは９０～１００質量％、特に好ましくは９５～１００質量％である。 The component (B) used in one aspect of the present invention may contain at least the compound (B1) represented by the general formula (b-1) from the viewpoint of providing a lubricating oil composition with improved high-temperature cleanliness. Preferably, it preferably contains at least the compound (B11) represented by the general formula (b-11).
In the lubricating oil composition of one aspect of the present invention, the content ratio of component (B1) or (B11) in component (B) is the total amount (100% by mass) of component (B) contained in the lubricating oil composition. From the viewpoint of obtaining a lubricating oil composition with improved high-temperature cleanliness on a standard basis, preferably 40 to 100% by mass or more, more preferably 50 to 100% by mass, more preferably 60 to 100% by mass, and even more preferably The content is 70 to 100% by weight, more preferably 80 to 100% by weight, even more preferably 90 to 100% by weight, particularly preferably 95 to 100% by weight.
本発明の一態様の潤滑油組成物において、成分（Ｂ）中の成分（Ｂ１）又は（Ｂ１１）の含有割合は、当該潤滑油組成物に含まれる成分（Ｂ）の全量（１００質量％）基準で、高温清浄性をより向上させた潤滑油組成物とする観点から、好ましくは４０～１００質量％以上、より好ましくは５０～１００質量％、より好ましくは６０～１００質量％、更に好ましくは７０～１００質量％、更に好ましくは８０～１００質量％、より更に好ましくは９０～１００質量％、特に好ましくは９５～１００質量％である。 The component (B) used in one aspect of the present invention may contain at least the compound (B1) represented by the general formula (b-1) from the viewpoint of providing a lubricating oil composition with improved high-temperature cleanliness. Preferably, it preferably contains at least the compound (B11) represented by the general formula (b-11).
In the lubricating oil composition of one aspect of the present invention, the content ratio of component (B1) or (B11) in component (B) is the total amount (100% by mass) of component (B) contained in the lubricating oil composition. From the viewpoint of obtaining a lubricating oil composition with improved high-temperature cleanliness on a standard basis, preferably 40 to 100% by mass or more, more preferably 50 to 100% by mass, more preferably 60 to 100% by mass, and even more preferably The content is 70 to 100% by weight, more preferably 80 to 100% by weight, even more preferably 90 to 100% by weight, particularly preferably 95 to 100% by weight.
上記観点から、本発明の一態様の潤滑油組成物において、成分（Ｂ）の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、ロングドレイン性がより優れた潤滑油組成物とする観点から、好ましくは０．６０質量％以上、より好ましくは０．６５質量％以上、より好ましくは０．７０質量％以上、より好ましくは０．８５質量％以上、より好ましくは１．００質量％以上、更に好ましくは１．２０質量％以上、更に好ましくは１．４０質量％以上、更に好ましくは１．７０質量％以上、更に好ましくは２．００質量％以上、更に好ましくは２．１０質量％以上、より更に好ましくは２．２０質量％以上、より更に好ましくは２．５０質量％以上、特に好ましくは２．５５質量％以上であり、また、高温清浄性をより良好に保持し得る潤滑油組成物とする観点から、好ましくは１０．０質量％以下、より好ましくは９．５質量％以下、より好ましくは９．０質量％以下、更に好ましくは８．５質量％以下、更に好ましくは８．０質量％以下、より更に好ましくは７．５質量％以下、特に好ましくは７．０質量％以下であり、さらに、６．５質量％以下、６．０質量％以下、５．５質量％以下、５．０質量％以下、４．５質量％以下、４．０質量％以下、３．５質量％未満、３．４質量％以下、３．２質量％以下、又は３．０質量％以下、又は３．０質量％未満としてもよい。
としてもよい。 From the above point of view, in the lubricating oil composition of one embodiment of the present invention, the content of component (B) is determined based on the total amount (100% by mass) of the lubricating oil composition, which provides a lubricating oil composition with better long drain properties. From the viewpoint of making it a product, preferably 0.60% by mass or more, more preferably 0.65% by mass or more, more preferably 0.70% by mass or more, more preferably 0.85% by mass or more, and more preferably 1. 00% by mass or more, more preferably 1.20% by mass or more, even more preferably 1.40% by mass or more, still more preferably 1.70% by mass or more, even more preferably 2.00% by mass or more, even more preferably 2.00% by mass or more. The content is 10% by mass or more, even more preferably 2.20% by mass or more, even more preferably 2.50% by mass or more, particularly preferably 2.55% by mass or more, and also maintains high temperature cleanliness better. From the viewpoint of obtaining a lubricating oil composition, preferably 10.0% by mass or less, more preferably 9.5% by mass or less, more preferably 9.0% by mass or less, still more preferably 8.5% by mass or less, and Preferably 8.0% by mass or less, even more preferably 7.5% by mass or less, particularly preferably 7.0% by mass or less, further preferably 6.5% by mass or less, 6.0% by mass or less, 5. 5% by mass or less, 5.0% by mass or less, 4.5% by mass or less, 4.0% by mass or less, less than 3.5% by mass, 3.4% by mass or less, 3.2% by mass or less, or 3. It may be 0% by mass or less, or less than 3.0% by mass.
You can also use it as
としてもよい。 From the above point of view, in the lubricating oil composition of one embodiment of the present invention, the content of component (B) is determined based on the total amount (100% by mass) of the lubricating oil composition, which provides a lubricating oil composition with better long drain properties. From the viewpoint of making it a product, preferably 0.60% by mass or more, more preferably 0.65% by mass or more, more preferably 0.70% by mass or more, more preferably 0.85% by mass or more, and more preferably 1. 00% by mass or more, more preferably 1.20% by mass or more, even more preferably 1.40% by mass or more, still more preferably 1.70% by mass or more, even more preferably 2.00% by mass or more, even more preferably 2.00% by mass or more. The content is 10% by mass or more, even more preferably 2.20% by mass or more, even more preferably 2.50% by mass or more, particularly preferably 2.55% by mass or more, and also maintains high temperature cleanliness better. From the viewpoint of obtaining a lubricating oil composition, preferably 10.0% by mass or less, more preferably 9.5% by mass or less, more preferably 9.0% by mass or less, still more preferably 8.5% by mass or less, and Preferably 8.0% by mass or less, even more preferably 7.5% by mass or less, particularly preferably 7.0% by mass or less, further preferably 6.5% by mass or less, 6.0% by mass or less, 5. 5% by mass or less, 5.0% by mass or less, 4.5% by mass or less, 4.0% by mass or less, less than 3.5% by mass, 3.4% by mass or less, 3.2% by mass or less, or 3. It may be 0% by mass or less, or less than 3.0% by mass.
You can also use it as
本発明の一態様の潤滑油組成物において、成分（Ｂ）の窒素原子換算での含有量は、当該潤滑油組成物の全量（１００質量％）基準で、ロングドレイン性がより優れた潤滑油組成物とする観点から、好ましくは０．０２０質量％以上、より好ましくは０．０５０質量％超、より好ましくは０．０５５質量％以上、より好ましくは０．０６０質量％以上、更に好ましくは０．０７０質量％以上、更に好ましくは０．０８０質量％以上、より更に好ましくは０．０９０質量％以上、特に好ましくは０．１００質量％以上であり、また、高温清浄性をより良好に保持し得る潤滑油組成物とする観点から、好ましくは０．６０質量％以下、より好ましくは０．５０質量％以下、より好ましくは０．４５質量％以下、更に好ましくは０．４２質量％以下、更に好ましくは０．４０質量％以下、より更に好ましくは０．３７質量％以下、特に好ましくは０．３５質量％以下であり、さらに、０．３２質量％以下、０．３０質量％以下、０．２７質量％以下、０．２５質量％以下、０．２２質量％以下、又は０．２０質量％以下としてもよい。
In the lubricating oil composition of one embodiment of the present invention, the content of component (B) in terms of nitrogen atoms is based on the total amount (100% by mass) of the lubricating oil composition, and the lubricating oil composition has better long drain properties. From the viewpoint of forming a composition, preferably 0.020% by mass or more, more preferably more than 0.050% by mass, more preferably 0.055% by mass or more, more preferably 0.060% by mass or more, and even more preferably 0. The content is .070% by mass or more, more preferably 0.080% by mass or more, even more preferably 0.090% by mass or more, particularly preferably 0.100% by mass or more, and also maintains high temperature cleanliness better. From the viewpoint of obtaining a lubricating oil composition, preferably 0.60% by mass or less, more preferably 0.50% by mass or less, more preferably 0.45% by mass or less, still more preferably 0.42% by mass or less, and Preferably it is 0.40% by mass or less, even more preferably 0.37% by mass or less, particularly preferably 0.35% by mass or less, further preferably 0.32% by mass or less, 0.30% by mass or less, 0. It may be 27% by mass or less, 0.25% by mass or less, 0.22% by mass or less, or 0.20% by mass or less.
＜成分（Ｃ）：有機ジチオリン酸亜鉛＞
本発明の一態様の潤滑油組成物は、成分（Ｃ）として、少なくとも１つの第１級アルキル基を有する有機ジチオリン酸亜鉛（以下、「ＺｎＤＴＰ」ともいう）を含有する。成分（Ｃ）を含有することで、耐銅溶出性を向上させた潤滑油組成物とすることができる。
本発明の一態様において、成分（Ｃ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (C): Zinc organic dithiophosphate>
The lubricating oil composition of one embodiment of the present invention contains organic zinc dithiophosphate (hereinafter also referred to as "ZnDTP") having at least one primary alkyl group as component (C). By containing component (C), a lubricating oil composition with improved copper elution resistance can be obtained.
In one embodiment of the present invention, component (C) may be used alone or in combination of two or more.
本発明の一態様の潤滑油組成物は、成分（Ｃ）として、少なくとも１つの第１級アルキル基を有する有機ジチオリン酸亜鉛（以下、「ＺｎＤＴＰ」ともいう）を含有する。成分（Ｃ）を含有することで、耐銅溶出性を向上させた潤滑油組成物とすることができる。
本発明の一態様において、成分（Ｃ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (C): Zinc organic dithiophosphate>
The lubricating oil composition of one embodiment of the present invention contains organic zinc dithiophosphate (hereinafter also referred to as "ZnDTP") having at least one primary alkyl group as component (C). By containing component (C), a lubricating oil composition with improved copper elution resistance can be obtained.
In one embodiment of the present invention, component (C) may be used alone or in combination of two or more.
本発明の一態様で用いる成分（Ｃ）は、少なくとも１つの第１級アルキル基を有するＺｎＤＴＰであればよく、第１級アルキル基以外のアルキル基や、アルキル基以外の炭化水素基を有するＺｎＤＴＰであってもよい。
ただし、耐銅溶出性をより向上させた潤滑油組成物とする観点から、本発明一態様で用いる成分（Ｃ）は、下記一般式（ｃ－１）で表される化合物（Ｃ１）を含むことが好ましい。
Component (C) used in one embodiment of the present invention may be ZnDTP having at least one primary alkyl group, and ZnDTP having an alkyl group other than the primary alkyl group or a hydrocarbon group other than the alkyl group. It may be.
However, from the viewpoint of providing a lubricating oil composition with further improved copper elution resistance, the component (C) used in one embodiment of the present invention contains a compound (C1) represented by the following general formula (c-1). It is preferable.
ただし、耐銅溶出性をより向上させた潤滑油組成物とする観点から、本発明一態様で用いる成分（Ｃ）は、下記一般式（ｃ－１）で表される化合物（Ｃ１）を含むことが好ましい。
However, from the viewpoint of providing a lubricating oil composition with further improved copper elution resistance, the component (C) used in one embodiment of the present invention contains a compound (C1) represented by the following general formula (c-1). It is preferable.
上記一般式（ｃ－１）中、Ｒｃ１～Ｒｃ４は、それぞれ独立して、第１級アルキル基である。置換基Ｒｃ１～Ｒｃ４のすべてが第１級アルキル基である成分（Ｃ１）を用いることで、耐銅溶出性をより向上させた潤滑油組成物とすることができる。
上記観点から、本発明の一態様で用いる成分（Ｃ）中の成分（Ｃ１）の含有割合は、当該潤滑油組成物に含まれる成分（Ｃ）の全量（１００質量％）基準で、好ましくは６０～１００質量％、より好ましくは７０～１００質量％、より好ましくは８０～１００質量％、更に好ましくは８５～１００質量％、より更に好ましくは９０～１００質量％、特に好ましくは９５～１００質量％である。 In the above general formula (c-1), R c1 to R c4 are each independently a primary alkyl group. By using component (C1) in which all of the substituents R c1 to R c4 are primary alkyl groups, a lubricating oil composition with improved copper elution resistance can be obtained.
From the above viewpoint, the content ratio of component (C1) in component (C) used in one aspect of the present invention is preferably based on the total amount (100% by mass) of component (C) contained in the lubricating oil composition. 60 to 100% by mass, more preferably 70 to 100% by mass, more preferably 80 to 100% by mass, even more preferably 85 to 100% by mass, even more preferably 90 to 100% by mass, particularly preferably 95 to 100% by mass. %.
上記観点から、本発明の一態様で用いる成分（Ｃ）中の成分（Ｃ１）の含有割合は、当該潤滑油組成物に含まれる成分（Ｃ）の全量（１００質量％）基準で、好ましくは６０～１００質量％、より好ましくは７０～１００質量％、より好ましくは８０～１００質量％、更に好ましくは８５～１００質量％、より更に好ましくは９０～１００質量％、特に好ましくは９５～１００質量％である。 In the above general formula (c-1), R c1 to R c4 are each independently a primary alkyl group. By using component (C1) in which all of the substituents R c1 to R c4 are primary alkyl groups, a lubricating oil composition with improved copper elution resistance can be obtained.
From the above viewpoint, the content ratio of component (C1) in component (C) used in one aspect of the present invention is preferably based on the total amount (100% by mass) of component (C) contained in the lubricating oil composition. 60 to 100% by mass, more preferably 70 to 100% by mass, more preferably 80 to 100% by mass, even more preferably 85 to 100% by mass, even more preferably 90 to 100% by mass, particularly preferably 95 to 100% by mass. %.
Ｒｃ１～Ｒｃ４として選択し得る、第１級アルキル基の炭素数は、耐銅溶出性をより向上させた潤滑油組成物とする観点から、好ましくは１～７、より好ましくは２～７、更に好ましくは３～７、より更に好ましくは４～７である。
The number of carbon atoms in the primary alkyl group that can be selected as R c1 to R c4 is preferably 1 to 7, more preferably 2 to 7, from the viewpoint of providing a lubricating oil composition with improved copper elution resistance. , more preferably 3 to 7, even more preferably 4 to 7.
Ｒｃ１～Ｒｃ４として選択し得る、第１級アルキル基としては、下記一般式（ｃ－ｉ）で表される基が挙げられる。
Examples of the primary alkyl group that can be selected as R c1 to R c4 include groups represented by the following general formula (ci).
上記式（ｃ－ｉ）中、Ｒｃは、水素原子又はアルキル基であって、当該アルキル基は、直鎖アルキル基であってもよく、分岐鎖アルキル基であってもよい。
Ｒｃとして選択し得る、前記アルキル基の炭素数は、好ましくは１～６、より好ましくは２～６、更に好ましくは３～５である。
Ｒｃとして選択し得る、前記アルキル基としては、例えば、メチル基、エチル基、プロピル基（ｎ－プロピル基、イソプロピル基）、ブチル基（ｎ－ブチル基、ｓ－ブチル基、ｔ－ブチル基、イソブチル基）、ペンチル基（ｎ－ペンチル基、１－メチルブチル基、２－メチルブチル基、３－メチルブチル基、１－エチルプロピル基、１，１－ジメチルプロピル基、１，２－ジメチルプロピル基、２，２－ジメチルプロピル基）、ヘキシル基（ｎ－ヘキシル基、２－メチルペンチル基、３－メチルペンチル基、２，２－ジメチルブチル基、２，３－ジメチルブチル基）等が挙げられる。 In the above formula (ci), R c is a hydrogen atom or an alkyl group, and the alkyl group may be a straight-chain alkyl group or a branched-chain alkyl group.
The number of carbon atoms in the alkyl group that can be selected as R c is preferably 1 to 6, more preferably 2 to 6, and still more preferably 3 to 5.
Examples of the alkyl group that can be selected as R c include methyl group, ethyl group, propyl group (n-propyl group, isopropyl group), butyl group (n-butyl group, s-butyl group, t-butyl group). , isobutyl group), pentyl group (n-pentyl group, 1-methylbutyl group, 2-methylbutyl group, 3-methylbutyl group, 1-ethylpropyl group, 1,1-dimethylpropyl group, 1,2-dimethylpropyl group, 2,2-dimethylpropyl group), hexyl group (n-hexyl group, 2-methylpentyl group, 3-methylpentyl group, 2,2-dimethylbutyl group, 2,3-dimethylbutyl group), and the like.
Ｒｃとして選択し得る、前記アルキル基の炭素数は、好ましくは１～６、より好ましくは２～６、更に好ましくは３～５である。
Ｒｃとして選択し得る、前記アルキル基としては、例えば、メチル基、エチル基、プロピル基（ｎ－プロピル基、イソプロピル基）、ブチル基（ｎ－ブチル基、ｓ－ブチル基、ｔ－ブチル基、イソブチル基）、ペンチル基（ｎ－ペンチル基、１－メチルブチル基、２－メチルブチル基、３－メチルブチル基、１－エチルプロピル基、１，１－ジメチルプロピル基、１，２－ジメチルプロピル基、２，２－ジメチルプロピル基）、ヘキシル基（ｎ－ヘキシル基、２－メチルペンチル基、３－メチルペンチル基、２，２－ジメチルブチル基、２，３－ジメチルブチル基）等が挙げられる。 In the above formula (ci), R c is a hydrogen atom or an alkyl group, and the alkyl group may be a straight-chain alkyl group or a branched-chain alkyl group.
The number of carbon atoms in the alkyl group that can be selected as R c is preferably 1 to 6, more preferably 2 to 6, and still more preferably 3 to 5.
Examples of the alkyl group that can be selected as R c include methyl group, ethyl group, propyl group (n-propyl group, isopropyl group), butyl group (n-butyl group, s-butyl group, t-butyl group). , isobutyl group), pentyl group (n-pentyl group, 1-methylbutyl group, 2-methylbutyl group, 3-methylbutyl group, 1-ethylpropyl group, 1,1-dimethylpropyl group, 1,2-dimethylpropyl group, 2,2-dimethylpropyl group), hexyl group (n-hexyl group, 2-methylpentyl group, 3-methylpentyl group, 2,2-dimethylbutyl group, 2,3-dimethylbutyl group), and the like.
本発明の一態様の潤滑油組成物において、成分（Ｃ）の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、耐銅溶出性をより向上させた潤滑油組成物とする観点から、好ましくは０．０１質量％以上、より好ましくは０．０５質量％以上、より好ましくは０．１０質量％以上、更に好ましくは０．３０質量％以上、更に好ましくは０．５０質量％以上、より更に好ましくは０．７０質量％以上、より更に好ましくは０．８０質量％以上、特に好ましくは０．９０質量％以上であり、また、高温清浄性が良好である潤滑油組成物とする観点から、好ましくは７．０質量％以下、より好ましくは６．０質量％以下、より好ましくは５．０質量％以下、更に好ましくは４．０質量％以下、より更に好ましくは３．０質量％以下、特に好ましくは２．０質量％以下である。
In the lubricating oil composition of one embodiment of the present invention, the content of component (C) is based on the total amount (100% by mass) of the lubricating oil composition, and the lubricating oil composition has improved copper elution resistance. From the viewpoint of % or more, even more preferably 0.70% by mass or more, even more preferably 0.80% by mass or more, particularly preferably 0.90% by mass or more, and also has good high temperature detergency. From the viewpoint of achieving 3.0% by mass or less, preferably 7.0% by mass or less, more preferably 6.0% by mass or less, more preferably 5.0% by mass or less, still more preferably 4.0% by mass or less, even more preferably 3.0% by mass or less. It is 0% by mass or less, particularly preferably 2.0% by mass or less.
本発明の一態様の潤滑油組成物において、成分（Ｃ）の亜鉛原子換算での含有量は、当該潤滑油組成物の全量（１００質量％）基準で、耐銅溶出性をより向上させた潤滑油組成物とする観点から、好ましくは０．００５質量％以上、より好ましくは０．０１質量％以上、更に好ましくは０．０３質量％以上、より更に好ましくは０．０５質量％以上、特に好ましくは０．０７質量％以上であり、また、高温清浄性が良好である潤滑油組成物とする観点から、好ましくは０．７０質量％以下、より好ましくは０．５０質量％以下、更に好ましくは０．３０質量％以下、より更に好ましくは０．２０質量％以下、特に好ましくは０．１５質量％以下である。
In the lubricating oil composition of one embodiment of the present invention, the content of component (C) in terms of zinc atoms is based on the total amount (100% by mass) of the lubricating oil composition, which further improves copper elution resistance. From the viewpoint of forming a lubricating oil composition, preferably 0.005% by mass or more, more preferably 0.01% by mass or more, still more preferably 0.03% by mass or more, even more preferably 0.05% by mass or more, especially It is preferably 0.07% by mass or more, and from the viewpoint of providing a lubricating oil composition with good high-temperature cleanability, it is preferably 0.70% by mass or less, more preferably 0.50% by mass or less, and even more preferably is 0.30% by mass or less, even more preferably 0.20% by mass or less, particularly preferably 0.15% by mass or less.
本発明の一態様の潤滑油組成物において、高温清浄性をより向上させると共に、耐銅溶出性をより向上させた潤滑油組成物とする観点から、成分（Ｂ）と成分（Ｃ）との含有量比［（Ｂ）／（Ｃ）］は、質量比で、好ましくは０．５以上、より好ましくは０．７以上、より好ましくは１．０以上、更に好ましくは１．２以上、更に好ましくは１．５以上、より更に好ましくは１．７以上、より更に好ましくは２．０以上、特に好ましくは２．２以上であり、また、好ましくは１０．０以下、より好ましくは８．００以下、より好ましくは７．００以下、より好ましくは６．００以下、更に好ましくは５．５０以下、更に好ましくは５．００以下、より更に好ましくは４．５０以下、より更に好ましくは４．００以下、特に好ましくは３．５０以下である。
In the lubricating oil composition of one embodiment of the present invention, component (B) and component (C) are combined to further improve high-temperature cleanliness and to provide a lubricating oil composition with further improved copper elution resistance. The content ratio [(B)/(C)] is a mass ratio, preferably 0.5 or more, more preferably 0.7 or more, more preferably 1.0 or more, still more preferably 1.2 or more, and Preferably 1.5 or more, even more preferably 1.7 or more, even more preferably 2.0 or more, particularly preferably 2.2 or more, and preferably 10.0 or less, more preferably 8.00 or less, more preferably 7.00 or less, more preferably 6.00 or less, still more preferably 5.50 or less, even more preferably 5.00 or less, even more preferably 4.50 or less, even more preferably 4.00 It is particularly preferably 3.50 or less.
＜成分（Ｃ）には該当しない有機ジチオリン酸亜鉛＞
本発明の一態様の潤滑油組成物は、本発明の効果を損なわない範囲で、成分（Ｃ）には該当しない有機ジチオリン酸亜鉛を含有してもよい。
成分（Ｃ）には該当しない有機ジチオリン酸亜鉛は、第１級アルキル基を有さないＺｎＤＴＰであり、例えば、置換基がすべて第２級アルキル基であるＺｎＤＴＰ等が挙げられる。 <Organic zinc dithiophosphate not applicable to component (C)>
The lubricating oil composition of one embodiment of the present invention may contain zinc organic dithiophosphate, which does not fall under component (C), to the extent that the effects of the present invention are not impaired.
The organic zinc dithiophosphate that does not fall under component (C) is ZnDTP that does not have a primary alkyl group, and includes, for example, ZnDTP in which all substituents are secondary alkyl groups.
本発明の一態様の潤滑油組成物は、本発明の効果を損なわない範囲で、成分（Ｃ）には該当しない有機ジチオリン酸亜鉛を含有してもよい。
成分（Ｃ）には該当しない有機ジチオリン酸亜鉛は、第１級アルキル基を有さないＺｎＤＴＰであり、例えば、置換基がすべて第２級アルキル基であるＺｎＤＴＰ等が挙げられる。 <Organic zinc dithiophosphate not applicable to component (C)>
The lubricating oil composition of one embodiment of the present invention may contain zinc organic dithiophosphate, which does not fall under component (C), to the extent that the effects of the present invention are not impaired.
The organic zinc dithiophosphate that does not fall under component (C) is ZnDTP that does not have a primary alkyl group, and includes, for example, ZnDTP in which all substituents are secondary alkyl groups.
ただし、耐銅溶出性をより良好とした潤滑油組成物とする観点から、成分（Ｃ）には該当しない有機ジチオリン酸亜鉛は、その含有量が少ないほど好ましく、実質的に含有しないことがより好ましい。
本明細書において、「成分（Ｃ）には該当しない有機ジチオリン酸亜鉛を実質的に含有しない」とは、所定の目的をもって、当該有機ジチオリン酸亜鉛を配合して含有させる態様を否定する規定であって、意図せずにもしくは不可避的に、当該有機ジチオリン酸亜鉛が混入又は存在してしまうような態様までを否定する規定ではない。 However, from the viewpoint of creating a lubricating oil composition with better copper elution resistance, it is preferable that the content of organic zinc dithiophosphate, which does not fall under component (C), be as small as possible, and it is more preferable that it be substantially absent. preferable.
In this specification, the phrase "does not substantially contain zinc organic dithiophosphate, which does not fall under component (C)" is a provision that negates the mode of blending and containing the organic zinc dithiophosphate for a predetermined purpose. However, this provision does not negate an embodiment in which the organic zinc dithiophosphate is mixed or present unintentionally or unavoidably.
本明細書において、「成分（Ｃ）には該当しない有機ジチオリン酸亜鉛を実質的に含有しない」とは、所定の目的をもって、当該有機ジチオリン酸亜鉛を配合して含有させる態様を否定する規定であって、意図せずにもしくは不可避的に、当該有機ジチオリン酸亜鉛が混入又は存在してしまうような態様までを否定する規定ではない。 However, from the viewpoint of creating a lubricating oil composition with better copper elution resistance, it is preferable that the content of organic zinc dithiophosphate, which does not fall under component (C), be as small as possible, and it is more preferable that it be substantially absent. preferable.
In this specification, the phrase "does not substantially contain zinc organic dithiophosphate, which does not fall under component (C)" is a provision that negates the mode of blending and containing the organic zinc dithiophosphate for a predetermined purpose. However, this provision does not negate an embodiment in which the organic zinc dithiophosphate is mixed or present unintentionally or unavoidably.
本発明の一態様の潤滑油組成物において、成分（Ｃ）には該当しない有機ジチオリン酸亜鉛の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．００１質量％未満、より好ましくは０．０００１質量％未満、更に好ましくは０．００００１質量％未満である。
In the lubricating oil composition of one aspect of the present invention, the content of organic zinc dithiophosphate, which does not fall under component (C), is preferably 0.001 mass% based on the total amount (100% by mass) of the lubricating oil composition. %, more preferably less than 0.0001% by weight, even more preferably less than 0.00001% by weight.
本発明の一態様の潤滑油組成物において、成分（Ｃ）には該当しない有機ジチオリン酸亜鉛の含有量は、当該潤滑油組成物に含まれる成分（Ｃ）の全量１００質量部に対して、好ましくは１０質量部未満、より好ましくは５質量部未満、より好ましくは１質量部未満、更に好ましくは０．１質量部未満、更に好ましくは０．０１質量部未満、より更に好ましくは０．００１質量部未満、特に好ましくは０．０００１質量部未満である。
In the lubricating oil composition of one aspect of the present invention, the content of organic zinc dithiophosphate, which does not fall under component (C), is as follows: Preferably less than 10 parts by weight, more preferably less than 5 parts by weight, more preferably less than 1 part by weight, even more preferably less than 0.1 parts by weight, even more preferably less than 0.01 parts by weight, even more preferably 0.001 parts by weight. It is less than 0.0001 parts by weight, particularly preferably less than 0.0001 parts by weight.
＜成分（Ｄ）：ジチオカルバミン酸モリブデン＞
本発明の一態様の潤滑油組成物は、成分（Ｄ）として、ジチオカルバミン酸モリブデンを含有してもよい。成分（Ｄ）を含有することで、耐銅溶出性をより向上させた潤滑油組成物とすることができる。
本発明の一態様において、成分（Ｄ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (D): Molybdenum dithiocarbamate>
The lubricating oil composition of one embodiment of the present invention may contain molybdenum dithiocarbamate as component (D). By containing component (D), a lubricating oil composition with improved copper elution resistance can be obtained.
In one embodiment of the present invention, component (D) may be used alone or in combination of two or more.
本発明の一態様の潤滑油組成物は、成分（Ｄ）として、ジチオカルバミン酸モリブデンを含有してもよい。成分（Ｄ）を含有することで、耐銅溶出性をより向上させた潤滑油組成物とすることができる。
本発明の一態様において、成分（Ｄ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (D): Molybdenum dithiocarbamate>
The lubricating oil composition of one embodiment of the present invention may contain molybdenum dithiocarbamate as component (D). By containing component (D), a lubricating oil composition with improved copper elution resistance can be obtained.
In one embodiment of the present invention, component (D) may be used alone or in combination of two or more.
本発明の一態様で用いる成分（Ｄ）としては、一分子中に２つのモリブデン原子を含む二核のジチオカルバミン酸モリブデン、及び一分子中に３つのモリブデン原子を含む三核のジチオカルバミン酸モリブデンが挙げられ、二核のジチオカルバミン酸モリブデンが好ましい。
本発明の一態様で用いる成分（Ｄ）は、下記一般式（ｄ－１）で表される化合物（Ｄ１）及び下記一般式（ｄ－２）で表される化合物（Ｄ２）から選ばれる１種以上を含むことが好ましい。 Component (D) used in one embodiment of the present invention includes dinuclear molybdenum dithiocarbamate containing two molybdenum atoms in one molecule, and trinuclear molybdenum dithiocarbamate containing three molybdenum atoms in one molecule. and dinuclear molybdenum dithiocarbamate is preferred.
Component (D) used in one embodiment of the present invention is 1 selected from a compound (D1) represented by the following general formula (d-1) and a compound (D2) represented by the following general formula (d-2). It is preferable to include more than one species.
本発明の一態様で用いる成分（Ｄ）は、下記一般式（ｄ－１）で表される化合物（Ｄ１）及び下記一般式（ｄ－２）で表される化合物（Ｄ２）から選ばれる１種以上を含むことが好ましい。 Component (D) used in one embodiment of the present invention includes dinuclear molybdenum dithiocarbamate containing two molybdenum atoms in one molecule, and trinuclear molybdenum dithiocarbamate containing three molybdenum atoms in one molecule. and dinuclear molybdenum dithiocarbamate is preferred.
Component (D) used in one embodiment of the present invention is 1 selected from a compound (D1) represented by the following general formula (d-1) and a compound (D2) represented by the following general formula (d-2). It is preferable to include more than one species.
上記一般式（ｄ－１）及び（ｄ－２）中、Ｒｄ１～Ｒｄ４は、それぞれ独立に、炭化水素基を示し、互いに同一であってもよく、異なっていてもよい。
Ｘ１～Ｘ８は、それぞれ独立に、酸素原子又は硫黄原子を示し、互いに同一であってもよく、異なっていてもよい。
ただし、式（ｄ－１）中のＸ１～Ｘ８の少なくとも一つは硫黄原子である。
なお、本発明の一態様においては、式（ｄ－１）中のＸ１及びＸ２が酸素原子であり、Ｘ３～Ｘ８が硫黄原子であることが好ましい。
また、式（ｄ－２）中のＸ１～Ｘ４は酸素原子であることが好ましい。 In the above general formulas (d-1) and (d-2), R d1 to R d4 each independently represent a hydrocarbon group, and may be the same or different from each other.
X 1 to X 8 each independently represent an oxygen atom or a sulfur atom, and may be the same or different.
However, at least one of X 1 to X 8 in formula (d-1) is a sulfur atom.
In one embodiment of the present invention, it is preferable that X 1 and X 2 in formula (d-1) are oxygen atoms, and X 3 to X 8 are sulfur atoms.
Further, it is preferable that X 1 to X 4 in formula (d-2) are oxygen atoms.
Ｘ１～Ｘ８は、それぞれ独立に、酸素原子又は硫黄原子を示し、互いに同一であってもよく、異なっていてもよい。
ただし、式（ｄ－１）中のＸ１～Ｘ８の少なくとも一つは硫黄原子である。
なお、本発明の一態様においては、式（ｄ－１）中のＸ１及びＸ２が酸素原子であり、Ｘ３～Ｘ８が硫黄原子であることが好ましい。
また、式（ｄ－２）中のＸ１～Ｘ４は酸素原子であることが好ましい。 In the above general formulas (d-1) and (d-2), R d1 to R d4 each independently represent a hydrocarbon group, and may be the same or different from each other.
X 1 to X 8 each independently represent an oxygen atom or a sulfur atom, and may be the same or different.
However, at least one of X 1 to X 8 in formula (d-1) is a sulfur atom.
In one embodiment of the present invention, it is preferable that X 1 and X 2 in formula (d-1) are oxygen atoms, and X 3 to X 8 are sulfur atoms.
Further, it is preferable that X 1 to X 4 in formula (d-2) are oxygen atoms.
上記一般式（ｄ－１）において、溶解性を向上させる観点から、Ｘ１～Ｘ８中の硫黄原子と酸素原子とのモル比〔硫黄原子／酸素原子〕が、好ましくは１／４～４／１、より好ましくは１／３～３／１である。
In the above general formula (d-1), from the viewpoint of improving solubility, the molar ratio of sulfur atoms to oxygen atoms in X 1 to X 8 [sulfur atoms/oxygen atoms] is preferably 1/4 to 4. /1, more preferably 1/3 to 3/1.
上記一般式（ｄ－１）及び（ｄ－２）中、Ｒｄ１～Ｒｄ４として選択し得る、前記炭化水素基としては、例えば、メチル基、エチル基、プロピル基、ブチル基、ペンチル基、ヘキシル基、ヘプチル基、オクチル基、イソオクチル基、ノニル基、デシル基、ウンデシル基、ドデシル基、トリデシル基、イソトリデシル基、テトラデシル基、ペンタデシル基、ヘキサデシル基、ヘプタデシル基、オクタデシル基等のアルキル基；オクテニル基、ノネニル基、デセニル基、ウンデセニル基、ドデセニル基、トリデセニル基、テトラデセニル基、ペンタデセニル基等のアルケニル基；シクロヘキシル基、ジメチルシクロヘキシル基、エチルシクロヘキシル基、メチルシクロヘキシルメチル基、シクロヘキシルエチル基、プロピルシクロヘキシル基、ブチルシクロヘキシル基、ヘプチルシクロヘキシル基等のシクロアルキル基；フェニル基、ナフチル基、アントラセニル基、ビフェニル基、ターフェニル基等のアリール基；トリル基、ジメチルフェニル基、ブチルフェニル基、ノニルフェニル基、メチルベンジル基、ジメチルナフチル基等のアルキルアリール基；フェニルメチル基、フェニルエチル基、ジフェニルメチル基等のアリールアルキル基等が挙げられる。
これらの中でも、Ｒｄ１～Ｒｄ４として選択し得る、前記炭化水素基は、アルキル基又はアルケニル基であることが好ましく、アルキル基であることがより好ましい。 In the above general formulas (d-1) and (d-2), the hydrocarbon groups that can be selected as R d1 to R d4 include, for example, a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, Alkyl groups such as hexyl group, heptyl group, octyl group, isooctyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, isotridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group; octenyl alkenyl groups such as nonenyl group, decenyl group, undecenyl group, dodecenyl group, tridecenyl group, tetradecenyl group, pentadecenyl group; cyclohexyl group, dimethylcyclohexyl group, ethylcyclohexyl group, methylcyclohexylmethyl group, cyclohexylethyl group, propylcyclohexyl group , butylcyclohexyl group, heptylcyclohexyl group; cycloalkyl group such as phenyl group, naphthyl group, anthracenyl group, biphenyl group, terphenyl group; tolyl group, dimethylphenyl group, butylphenyl group, nonylphenyl group, methyl Examples include alkylaryl groups such as benzyl group and dimethylnaphthyl group; arylalkyl groups such as phenylmethyl group, phenylethyl group, and diphenylmethyl group.
Among these, the hydrocarbon group that can be selected as R d1 to R d4 is preferably an alkyl group or an alkenyl group, and more preferably an alkyl group.
これらの中でも、Ｒｄ１～Ｒｄ４として選択し得る、前記炭化水素基は、アルキル基又はアルケニル基であることが好ましく、アルキル基であることがより好ましい。 In the above general formulas (d-1) and (d-2), the hydrocarbon groups that can be selected as R d1 to R d4 include, for example, a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, Alkyl groups such as hexyl group, heptyl group, octyl group, isooctyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, isotridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group; octenyl alkenyl groups such as nonenyl group, decenyl group, undecenyl group, dodecenyl group, tridecenyl group, tetradecenyl group, pentadecenyl group; cyclohexyl group, dimethylcyclohexyl group, ethylcyclohexyl group, methylcyclohexylmethyl group, cyclohexylethyl group, propylcyclohexyl group , butylcyclohexyl group, heptylcyclohexyl group; cycloalkyl group such as phenyl group, naphthyl group, anthracenyl group, biphenyl group, terphenyl group; tolyl group, dimethylphenyl group, butylphenyl group, nonylphenyl group, methyl Examples include alkylaryl groups such as benzyl group and dimethylnaphthyl group; arylalkyl groups such as phenylmethyl group, phenylethyl group, and diphenylmethyl group.
Among these, the hydrocarbon group that can be selected as R d1 to R d4 is preferably an alkyl group or an alkenyl group, and more preferably an alkyl group.
Ｒｄ１～Ｒｄ４として選択し得る、前記炭化水素基の炭素数は、耐銅溶出性をより向上させた潤滑油組成物とする観点から、好ましくは１～２０、より好ましくは３～１８、更に好ましくは５～１６、より更に好ましくは８～１４、特に好ましくは８又は１３である。
The number of carbon atoms in the hydrocarbon group, which can be selected as R d1 to R d4 , is preferably 1 to 20, more preferably 3 to 18, from the viewpoint of providing a lubricating oil composition with improved copper elution resistance. More preferably 5 to 16, even more preferably 8 to 14, particularly preferably 8 or 13.
耐銅溶出性をより向上させた潤滑油組成物とする観点から、本発明の一態様で成分（Ｄ）として用いる、上記一般式（ｄ－１）及び（ｄ－２）中のＲｄ１～Ｒｄ４がアルキル基である化合物において、炭素数１０以下（好ましくは３～１０、より好ましくは５～１０、更に好ましくは７～１０）のアルキル基（α）と、炭素数１１以上（好ましくは１１～２０、より好ましくは１１～１６、更に好ましくは１２～１４）のアルキル基（β）とのモル比［（α）／（β）］は、好ましくは１／７～７／１、より好ましくは１／６～６／１、より好ましくは１／５～５／１、更に好ましくは１／４～４／１、より更に好ましくは１／３～３／１、特に好ましくは１／２～２／１である。
From the viewpoint of providing a lubricating oil composition with further improved copper elution resistance, R d1 to R d1 in the above general formulas (d-1) and (d-2) are used as component (D) in one embodiment of the present invention. In the compound in which R d4 is an alkyl group, an alkyl group (α) having 10 or less carbon atoms (preferably 3 to 10, more preferably 5 to 10, even more preferably 7 to 10) and an alkyl group (α) having 11 or more carbon atoms (preferably The molar ratio [(α)/(β)] of 11 to 20, more preferably 11 to 16, even more preferably 12 to 14) to the alkyl group (β) is preferably 1/7 to 7/1, more preferably 1/7 to 7/1. Preferably 1/6 to 6/1, more preferably 1/5 to 5/1, still more preferably 1/4 to 4/1, even more preferably 1/3 to 3/1, particularly preferably 1/2 ~2/1.
本発明の一態様の潤滑油組成物において、成分（Ｄ）の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、耐銅溶出性をより向上させた潤滑油組成物とする観点から、好ましくは０．０５質量％以上、より好ましくは０．１０質量％以上、更に好ましくは０．２０質量％以上、より更に好ましくは０．３０質量％以上、特に好ましくは０．５０質量％以上であり、また、５．０質量％以下、４．０質量％以下、３．０質量％以下、２．０質量％以下、１．５質量％以下、又は１．０質量％以下としてもよい。
In the lubricating oil composition of one embodiment of the present invention, the content of component (D) is based on the total amount (100% by mass) of the lubricating oil composition, and the lubricating oil composition has improved copper elution resistance. From the viewpoint of mass% or more, and 5.0 mass% or less, 4.0 mass% or less, 3.0 mass% or less, 2.0 mass% or less, 1.5 mass% or less, or 1.0 mass% or less You can also use it as
本発明の一態様の潤滑油組成物において、成分（Ｄ）のモリブデン原子換算での含有量は、当該潤滑油組成物の全量（１００質量％）基準で、耐銅溶出性をより向上させた潤滑油組成物とする観点から、好ましくは０．０１質量％以上、より好ましくは０．０２質量％以上、更に好ましくは０．０３質量％以上、より更に好ましくは０．０４質量％以上、特に好ましくは０．０５質量％以上であり、また、０．７０質量％以下、０．５０質量％以下、０．３０質量％以下、０．２０質量％以下、又は０．１０質量％以下としてもよい。
In the lubricating oil composition of one embodiment of the present invention, the content of component (D) in terms of molybdenum atoms is based on the total amount (100% by mass) of the lubricating oil composition, which further improves copper elution resistance. From the viewpoint of forming a lubricating oil composition, preferably 0.01% by mass or more, more preferably 0.02% by mass or more, still more preferably 0.03% by mass or more, even more preferably 0.04% by mass or more, especially It is preferably 0.05% by mass or more, and can also be 0.70% by mass or less, 0.50% by mass or less, 0.30% by mass or less, 0.20% by mass or less, or 0.10% by mass or less. good.
＜ジチオリン酸モリブデン＞
本発明の一態様の潤滑油組成物は、本発明の効果を損なわない範囲で、ジチオリン酸モリブデンを含有してもよい。
ジチオリン酸モリブデンとしては、例えば、下記一般式（ｄ’－ｉ）で表される化合物及び下記一般式（ｄ’－ii）で表される化合物が挙げられる。
<Molybdenum dithiophosphate>
The lubricating oil composition of one embodiment of the present invention may contain molybdenum dithiophosphate to the extent that the effects of the present invention are not impaired.
Examples of molybdenum dithiophosphate include compounds represented by the following general formula (d'-i) and compounds represented by the following general formula (d'-ii).
本発明の一態様の潤滑油組成物は、本発明の効果を損なわない範囲で、ジチオリン酸モリブデンを含有してもよい。
ジチオリン酸モリブデンとしては、例えば、下記一般式（ｄ’－ｉ）で表される化合物及び下記一般式（ｄ’－ii）で表される化合物が挙げられる。
The lubricating oil composition of one embodiment of the present invention may contain molybdenum dithiophosphate to the extent that the effects of the present invention are not impaired.
Examples of molybdenum dithiophosphate include compounds represented by the following general formula (d'-i) and compounds represented by the following general formula (d'-ii).
上記一般式（ｄ’－ｉ）及び（ｄ’－ii）中、Ｒｄ１１～Ｒｄ１４は、それぞれ独立に、炭化水素基を示し、互いに同一であってもよく、異なっていてもよい。Ｘ１１～Ｘ１８は、それぞれ独立に、酸素原子又は硫黄原子を示し、互いに同一であってもよく、異なっていてもよい。ただし、式（ｄ’－ｉ）中のＸ１１～Ｘ１８の少なくとも二つは硫黄原子である。
In the above general formulas (d'-i) and (d'-ii), R d11 to R d14 each independently represent a hydrocarbon group, and may be the same or different from each other. X 11 to X 18 each independently represent an oxygen atom or a sulfur atom, and may be the same or different. However, at least two of X 11 to X 18 in formula (d'-i) are sulfur atoms.
なお、耐銅溶出性をより良好とした潤滑油組成物とする観点から、ジチオリン酸モリブデンは、その含有量が少ないほど好ましく、実質的に含有しないことがより好ましい。
本明細書において、「ジチオリン酸モリブデンを実質的に含有しない」とは、所定の目的をもって、当該ジチオリン酸モリブデンを配合して含有させる態様を否定する規定であって、意図せずにもしくは不可避的に、当該ジチオリン酸モリブデンが混入又は存在してしまうような態様までを否定する規定ではない。 In addition, from the viewpoint of providing a lubricating oil composition with better copper elution resistance, it is preferable that the content of molybdenum dithiophosphate is small, and it is more preferable that it is substantially not contained.
As used herein, "not substantially containing molybdenum dithiophosphate" is a provision that negates the mode of blending and containing molybdenum dithiophosphate for a predetermined purpose; However, the provision does not negate an embodiment in which the molybdenum dithiophosphate is mixed or present.
本明細書において、「ジチオリン酸モリブデンを実質的に含有しない」とは、所定の目的をもって、当該ジチオリン酸モリブデンを配合して含有させる態様を否定する規定であって、意図せずにもしくは不可避的に、当該ジチオリン酸モリブデンが混入又は存在してしまうような態様までを否定する規定ではない。 In addition, from the viewpoint of providing a lubricating oil composition with better copper elution resistance, it is preferable that the content of molybdenum dithiophosphate is small, and it is more preferable that it is substantially not contained.
As used herein, "not substantially containing molybdenum dithiophosphate" is a provision that negates the mode of blending and containing molybdenum dithiophosphate for a predetermined purpose; However, the provision does not negate an embodiment in which the molybdenum dithiophosphate is mixed or present.
本発明の一態様の潤滑油組成物において、ジチオリン酸モリブデンの含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．００１質量％未満、より好ましくは０．０００１質量％未満、更に好ましくは０．００００１質量％未満である。
In the lubricating oil composition of one aspect of the present invention, the content of molybdenum dithiophosphate is preferably less than 0.001% by mass, more preferably 0.0001% by mass, based on the total amount (100% by mass) of the lubricating oil composition. It is less than 0.00001% by weight, more preferably less than 0.00001% by weight.
本発明の一態様の潤滑油組成物において、ジチオリン酸モリブデンの含有量は、当該潤滑油組成物に含まれる成分（Ｃ）の全量１００質量部に対して、好ましくは１０質量部未満、より好ましくは５質量部未満、より好ましくは１質量部未満、更に好ましくは０．１質量部未満、更に好ましくは０．０１質量部未満、より更に好ましくは０．００１質量部未満、特に好ましくは０．０００１質量部未満である。
In the lubricating oil composition of one aspect of the present invention, the content of molybdenum dithiophosphate is preferably less than 10 parts by mass, more preferably less than 10 parts by mass of the total amount of component (C) contained in the lubricating oil composition. is less than 5 parts by weight, more preferably less than 1 part by weight, even more preferably less than 0.1 part by weight, even more preferably less than 0.01 part by weight, even more preferably less than 0.001 part by weight, particularly preferably 0. It is less than 0,001 parts by mass.
＜成分（Ｅ）：成分（Ｂ）には該当しない酸化防止剤＞
本発明の一態様の潤滑油組成物は、高温清浄性をより向上させた潤滑油組成物とする観点から、成分（Ｅ）として、成分（Ｂ）には該当しない酸化防止剤を含有してもよい。
本発明の一態様で用いる成分（Ｅ）としては、例えば、ヒンダードアミン系化合物以外のアミン系酸化防止剤、フェノール系酸化防止剤、硫黄系酸化防止剤、リン系酸化防止剤等が挙げられる。
本発明の一態様において、成分（Ｅ）は、単独で用いてもよく、２種以上併用してもよい。 <Component (E): Antioxidant not applicable to component (B)>
The lubricating oil composition of one embodiment of the present invention contains an antioxidant that does not fall under component (B) as component (E) from the viewpoint of providing a lubricating oil composition with further improved high-temperature cleanliness. Good too.
Examples of the component (E) used in one embodiment of the present invention include amine antioxidants other than hindered amine compounds, phenolic antioxidants, sulfur antioxidants, phosphorus antioxidants, and the like.
In one embodiment of the present invention, component (E) may be used alone or in combination of two or more.
本発明の一態様の潤滑油組成物は、高温清浄性をより向上させた潤滑油組成物とする観点から、成分（Ｅ）として、成分（Ｂ）には該当しない酸化防止剤を含有してもよい。
本発明の一態様で用いる成分（Ｅ）としては、例えば、ヒンダードアミン系化合物以外のアミン系酸化防止剤、フェノール系酸化防止剤、硫黄系酸化防止剤、リン系酸化防止剤等が挙げられる。
本発明の一態様において、成分（Ｅ）は、単独で用いてもよく、２種以上併用してもよい。 <Component (E): Antioxidant not applicable to component (B)>
The lubricating oil composition of one embodiment of the present invention contains an antioxidant that does not fall under component (B) as component (E) from the viewpoint of providing a lubricating oil composition with further improved high-temperature cleanliness. Good too.
Examples of the component (E) used in one embodiment of the present invention include amine antioxidants other than hindered amine compounds, phenolic antioxidants, sulfur antioxidants, phosphorus antioxidants, and the like.
In one embodiment of the present invention, component (E) may be used alone or in combination of two or more.
本発明の一態様で用いる成分（Ｅ）は、成分（Ｂ）には該当しないアミン系酸化防止剤（Ｅ１）及びフェノール系酸化防止剤（Ｅ２）から選ばれる１種以上を含むことが好ましく、成分（Ｅ１）及び成分（Ｅ２）の双方を含むことがより好ましい。
Component (E) used in one aspect of the present invention preferably contains one or more selected from amine antioxidants (E1) and phenolic antioxidants (E2) that do not fall under component (B), It is more preferable to include both component (E1) and component (E2).
本発明の一態様で用いる成分（Ｅ）中の成分（Ｅ１）及び（Ｅ２）の合計含有割合は、当該潤滑油組成物に含まれる成分（Ｅ）の全量（１００質量％）基準で、好ましくは６０～１００質量％、より好ましくは７０～１００質量％、より好ましくは８０～１００質量％、更に好ましくは８５～１００質量％、より更に好ましくは９０～１００質量％、特に好ましくは９５～１００質量％である。
The total content of components (E1) and (E2) in component (E) used in one aspect of the present invention is preferably based on the total amount (100% by mass) of component (E) contained in the lubricating oil composition. is 60 to 100% by mass, more preferably 70 to 100% by mass, more preferably 80 to 100% by mass, even more preferably 85 to 100% by mass, even more preferably 90 to 100% by mass, particularly preferably 95 to 100% by mass. Mass%.
本発明の一態様で用いる成分（Ｅ）が、成分（Ｅ１）及び（Ｅ２）の双方を含む場合、成分（Ｅ１）と成分（Ｅ２）との含有量比〔（Ｅ１）／（Ｅ２）〕は、質量比で、好ましくは０．１０～５．０、より好ましくは０．３０～４．５、より好ましくは０．５０～４．０、更に好ましくは０．７５～３．５、より更に好ましくは１．０～３．０、特に好ましくは１．２～２．７である。
When component (E) used in one embodiment of the present invention contains both components (E1) and (E2), the content ratio of component (E1) and component (E2) [(E1)/(E2)] is a mass ratio, preferably 0.10 to 5.0, more preferably 0.30 to 4.5, more preferably 0.50 to 4.0, even more preferably 0.75 to 3.5, More preferably 1.0 to 3.0, particularly preferably 1.2 to 2.7.
本発明の一態様で用いる成分（Ｅ１）としては、例えば、ジフェニルアミン、炭素数３～２０（好ましくは６～１６、より好ましくは８～１２）のアルキル基を有するアルキル化ジフェニルアミン等のジフェニルアミン系酸化防止剤；α－ナフチルアミン、フェニル－α－ナフチルアミン、炭素数３～２０（好ましくは６～１６、より好ましくは８～１２）のアルキル基を有する置換フェニル－α－ナフチルアミン等のナフチルアミン系酸化防止剤；等が挙げられる。
The component (E1) used in one embodiment of the present invention includes, for example, diphenylamine-based oxidized diphenylamine such as diphenylamine, alkylated diphenylamine having an alkyl group having 3 to 20 carbon atoms (preferably 6 to 16 carbon atoms, and more preferably 8 to 12 carbon atoms). Inhibitor; naphthylamine-based antioxidant such as α-naphthylamine, phenyl-α-naphthylamine, substituted phenyl-α-naphthylamine having an alkyl group having 3 to 20 carbon atoms (preferably 6 to 16, more preferably 8 to 12). ; etc.
本発明の一態様で用いる成分（Ｅ２）としては、例えば、２，６－ジ－ｔ－ブチルフェノール、２，６－ジ－ｔ－ブチル－４－メチルフェノール、２，６－ジ－ｔ－ブチル－４－エチルフェノール、イソオクチル－３－（３，５－ジ－ｔ－ブチル－４－ヒドロキシフェニル）プロピオネート、オクタデシル－３－（３，５－ジ－ｔ－ブチル－４－ヒドロキシフェニル）プロピオネート、ベンゼンプロパン酸－３，５－ビス（１，１－ジメチルエチル）－４－ヒドロキシアルキルエステル等のモノフェノール系酸化防止剤；４，４’－メチレンビス（２，６－ジ－ｔ－ブチルフェノール）、２，２’－メチレンビス（４－エチル－６－ｔ－ブチルフェノール）、チオジエチレンビス［３－（３，５－ジ－ｔ－ブチル－４－ヒドロキシフェニル）プロピオネート］等のジフェノール系酸化防止剤；等が挙げられる。
Examples of the component (E2) used in one embodiment of the present invention include 2,6-di-t-butylphenol, 2,6-di-t-butyl-4-methylphenol, 2,6-di-t-butylphenol, and 2,6-di-t-butylphenol. -4-ethylphenol, isooctyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, octadecyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, Monophenolic antioxidants such as benzenepropanoic acid-3,5-bis(1,1-dimethylethyl)-4-hydroxyalkyl ester; 4,4'-methylenebis(2,6-di-t-butylphenol); Diphenolic antioxidants such as 2,2'-methylenebis(4-ethyl-6-t-butylphenol) and thiodiethylenebis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate] ; etc.
本発明の一態様の潤滑油組成物において、成分（Ｅ）の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．０１質量％以上、より好ましくは０．０５質量％以上、より好ましくは０．１０質量％以上、更に好ましくは０．３０質量％以上、更に好ましくは０．５０質量％以上、より更に好ましくは０．７０質量％以上、特に好ましくは１．００質量％以上であり、また、１０．０質量％以下、８．０質量％以下、６．０質量％以下、５．０質量％以下、４．０質量％以下、３．０質量％以下、又は２．０質量％以下としてもよい。
In the lubricating oil composition of one aspect of the present invention, the content of component (E) is preferably 0.01% by mass or more, more preferably 0.01% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. 05% by mass or more, more preferably 0.10% by mass or more, even more preferably 0.30% by mass or more, even more preferably 0.50% by mass or more, even more preferably 0.70% by mass or more, particularly preferably 1 .00 mass% or more, and 10.0 mass% or less, 8.0 mass% or less, 6.0 mass% or less, 5.0 mass% or less, 4.0 mass% or less, 3.0 mass% It may be less than or equal to 2.0% by mass.
本発明の一態様の潤滑油組成物において、成分（Ｅ）と成分（Ｂ）との比〔（Ｅ）／（Ｂ）〕は、質量比で、好ましくは０．１０以上、より好ましくは０．２０以上、更に好ましくは０．３０以上、より更に好ましくは０．４０以上、特に好ましくは０．４５以上であり、また、好ましくは６．０以下、より好ましくは５．０以下、更に好ましくは４．０以下、より更に好ましくは３．０以下、特に好ましくは２．０以下である。
In the lubricating oil composition of one aspect of the present invention, the ratio [(E)/(B)] between component (E) and component (B) is preferably 0.10 or more, more preferably 0. .20 or more, more preferably 0.30 or more, even more preferably 0.40 or more, particularly preferably 0.45 or more, and preferably 6.0 or less, more preferably 5.0 or less, even more preferably is 4.0 or less, more preferably 3.0 or less, particularly preferably 2.0 or less.
本発明の一態様の潤滑油組成物において、成分（Ｅ１）の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．０１質量％以上、より好ましくは０．０５質量％以上、より好ましくは０．１０質量％以上、更に好ましくは０．２０質量％以上、更に好ましくは０．３０質量％以上、より更に好ましくは０．５０質量％以上、特に好ましくは０．７０質量％以上であり、また、５．０質量％以下、４．０質量％以下、３．０質量％以下、２．０質量％以下、又は１．５質量％以下としてもよい。
In the lubricating oil composition of one embodiment of the present invention, the content of component (E1) is preferably 0.01% by mass or more, more preferably 0.01% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. 05% by mass or more, more preferably 0.10% by mass or more, even more preferably 0.20% by mass or more, even more preferably 0.30% by mass or more, even more preferably 0.50% by mass or more, particularly preferably 0 The content may be .70% by mass or more, and may also be 5.0% by mass or less, 4.0% by mass or less, 3.0% by mass or less, 2.0% by mass or less, or 1.5% by mass or less.
本発明の一態様の潤滑油組成物において、成分（Ｅ１）と成分（Ｂ）との比〔（Ｅ１）／（Ｂ）〕は、質量比で、好ましくは０．０５以上、より好ましくは０．１０以上、更に好ましくは０．２０以上、より更に好ましくは０．２５以上、特に好ましくは０．３０以上であり、また、好ましくは５．０以下、より好ましくは４．０以下、更に好ましくは３．０以下、より更に好ましくは２．０以下、特に好ましくは１．０以下である。
In the lubricating oil composition of one embodiment of the present invention, the ratio [(E1)/(B)] between component (E1) and component (B) is preferably 0.05 or more, more preferably 0. .10 or more, more preferably 0.20 or more, even more preferably 0.25 or more, particularly preferably 0.30 or more, and preferably 5.0 or less, more preferably 4.0 or less, even more preferably is 3.0 or less, more preferably 2.0 or less, particularly preferably 1.0 or less.
本発明の一態様の潤滑油組成物において、成分（Ｅ２）の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．０１質量％以上、より好ましくは０．０５質量％以上、より好ましくは０．１０質量％以上、更に好ましくは０．２０質量％以上、より更に好ましくは０．３０質量％以上、特に好ましくは０．４０質量％以上であり、また、５．０質量％以下、４．０質量％以下、３．０質量％以下、２．０質量％以下、又は１．０質量％以下としてもよい。
In the lubricating oil composition of one aspect of the present invention, the content of component (E2) is preferably 0.01% by mass or more, more preferably 0.01% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. 05% by mass or more, more preferably 0.10% by mass or more, even more preferably 0.20% by mass or more, even more preferably 0.30% by mass or more, particularly preferably 0.40% by mass or more, and It may be 5.0% by mass or less, 4.0% by mass or less, 3.0% by mass or less, 2.0% by mass or less, or 1.0% by mass or less.
本発明の一態様の潤滑油組成物において、成分（Ｅ２）と成分（Ｂ）との比〔（Ｅ２）／（Ｂ）〕は、質量比で、好ましくは０．０１以上、より好ましくは０．０５以上、更に好ましくは０．１０以上、より更に好ましくは０．１２以上、特に好ましくは０．１５以上であり、また、好ましくは３．０以下、より好ましくは２．０以下、更に好ましくは１．０以下、より更に好ましくは０．７０以下、特に好ましくは０．５０以下である。
In the lubricating oil composition of one embodiment of the present invention, the ratio [(E2)/(B)] between component (E2) and component (B) is preferably 0.01 or more, more preferably 0. .05 or more, more preferably 0.10 or more, even more preferably 0.12 or more, particularly preferably 0.15 or more, and preferably 3.0 or less, more preferably 2.0 or less, even more preferably is 1.0 or less, more preferably 0.70 or less, particularly preferably 0.50 or less.
＜成分（Ｆ）：イミド系化合物＞
本発明の一態様の潤滑油組成物は、成分（Ｆ）として、イミド系化合物を含有してもよい。成分（Ｆ）を含有することで、スラッジの析出を抑制し得る潤滑油組成物とすることができる。
本発明の一態様において、成分（Ｆ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (F): Imide compound>
The lubricating oil composition of one embodiment of the present invention may contain an imide compound as component (F). By containing component (F), a lubricating oil composition that can suppress sludge precipitation can be obtained.
In one aspect of the present invention, component (F) may be used alone or in combination of two or more.
本発明の一態様の潤滑油組成物は、成分（Ｆ）として、イミド系化合物を含有してもよい。成分（Ｆ）を含有することで、スラッジの析出を抑制し得る潤滑油組成物とすることができる。
本発明の一態様において、成分（Ｆ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (F): Imide compound>
The lubricating oil composition of one embodiment of the present invention may contain an imide compound as component (F). By containing component (F), a lubricating oil composition that can suppress sludge precipitation can be obtained.
In one aspect of the present invention, component (F) may be used alone or in combination of two or more.
本明細書において、「イミド系化合物」とは、下記式（ｆ－０）で表されるイミド構造を有する化合物を意味し、当該イミド構造を有する鎖状化合物や、当該イミド構造を有する環状化合物も含まれる。
（上記式中、＊は結合位置を示す。）
As used herein, "imide compound" means a compound having an imide structure represented by the following formula (f-0), and includes a chain compound having the imide structure and a cyclic compound having the imide structure. Also included.
(In the above formula, * indicates the bonding position.)
本発明の一態様で用いる成分（Ｆ）は、ホウ素化合物、アルコール、アルデヒド、ケトン、アルキルフェノール、環状カーボネート、エポキシ化合物、及び有機酸等から選ばれる１種以上と反応させた、変性イミド系化合物であってもよく、また、非変性イミド系化合物であってもよい。
Component (F) used in one embodiment of the present invention is a modified imide compound reacted with one or more selected from boron compounds, alcohols, aldehydes, ketones, alkylphenols, cyclic carbonates, epoxy compounds, organic acids, etc. Alternatively, it may be a non-modified imide compound.
本発明の一態様で用いる成分（Ｆ）は、アルケニルコハク酸イミド及びその変性物から選ばれる１種以上を含むことが好ましく、非ホウ素変性アルケニルコハク酸イミド（Ｆ１）及びホウ素変性アルケニルコハク酸イミド（Ｆ２）から選ばれる１種以上を含むことがより好ましく、成分（Ｆ１）及び（Ｆ２）を共に含むことが更に好ましい。
Component (F) used in one embodiment of the present invention preferably contains one or more selected from alkenyl succinimides and modified products thereof, including non-boron-modified alkenyl succinimides (F1) and boron-modified alkenyl succinimides. It is more preferable to contain one or more selected from (F2), and even more preferable to contain both components (F1) and (F2).
本発明の一態様で用いる成分（Ｆ）中の成分（Ｆ１）及び（Ｆ２）の合計含有割合は、当該潤滑油組成物に含まれる成分（Ｆ）の全量（１００質量％）基準で、好ましくは６０～１００質量％、より好ましくは７０～１００質量％、より好ましくは８０～１００質量％、更に好ましくは８５～１００質量％、より更に好ましくは９０～１００質量％、特に好ましくは９５～１００質量％である。
The total content of components (F1) and (F2) in component (F) used in one aspect of the present invention is preferably based on the total amount (100% by mass) of component (F) contained in the lubricating oil composition. is 60 to 100% by mass, more preferably 70 to 100% by mass, more preferably 80 to 100% by mass, even more preferably 85 to 100% by mass, even more preferably 90 to 100% by mass, particularly preferably 95 to 100% by mass. Mass%.
非ホウ素変性アルケニルコハク酸イミド（Ｆ１）としては、下記一般式（ｆ－１）で表されるアルケニルコハク酸ビスイミド（Ｆ１１）及び下記一般式（ｆ－２）で表されるアルケニルコハク酸モノイミド（Ｆ１２）から選ばれる１種以上が好ましい。
Examples of the non-boron-modified alkenylsuccinimide (F1) include alkenylsuccinic acid bisimide (F11) represented by the following general formula (f-1) and alkenylsuccinic acid monoimide (F11) represented by the following general formula (f-2). One or more types selected from F12) are preferred.
上記一般式（ｆ－１）及び（ｆ－２）中、Ｒｆ１、Ｒｆ２及びＲｆ３は、それぞれ独立に、質量平均分子量（Ｍｗ）が５００～３０００（好ましくは９００～２５００）のアルケニル基である。
Ｒｆ１、Ｒｆ２及びＲｆ３として選択し得る、前記アルケニル基としては、例えば、ポリブテニル基、ポリイソブテニル基、エチレン－プロピレン共重合体等が挙げられ、これらの中でも、ポリブテニル基又はポリイソブテニル基が好ましい。
Ａｆ１、Ａｆ２及びＡｆ３は、それぞれ独立に、炭素数２～５のアルキレン基である。
ｚ１は０～１０の整数であり、好ましくは１～４の整数、より好ましくは２又は３である。
ｚ２は１～１０の整数であり、好ましくは２～５の整数、より好ましくは３又は４である。 In the above general formulas (f-1) and (f-2), R f1 , R f2 and R f3 are each independently an alkenyl group having a mass average molecular weight (Mw) of 500 to 3000 (preferably 900 to 2500). It is.
Examples of the alkenyl group that can be selected as R f1 , R f2 and R f3 include a polybutenyl group, a polyisobutenyl group, an ethylene-propylene copolymer, and among these, a polybutenyl group or a polyisobutenyl group is preferred.
A f1 , A f2 and A f3 are each independently an alkylene group having 2 to 5 carbon atoms.
z1 is an integer of 0 to 10, preferably an integer of 1 to 4, more preferably 2 or 3.
z2 is an integer of 1 to 10, preferably an integer of 2 to 5, more preferably 3 or 4.
Ｒｆ１、Ｒｆ２及びＲｆ３として選択し得る、前記アルケニル基としては、例えば、ポリブテニル基、ポリイソブテニル基、エチレン－プロピレン共重合体等が挙げられ、これらの中でも、ポリブテニル基又はポリイソブテニル基が好ましい。
Ａｆ１、Ａｆ２及びＡｆ３は、それぞれ独立に、炭素数２～５のアルキレン基である。
ｚ１は０～１０の整数であり、好ましくは１～４の整数、より好ましくは２又は３である。
ｚ２は１～１０の整数であり、好ましくは２～５の整数、より好ましくは３又は４である。 In the above general formulas (f-1) and (f-2), R f1 , R f2 and R f3 are each independently an alkenyl group having a mass average molecular weight (Mw) of 500 to 3000 (preferably 900 to 2500). It is.
Examples of the alkenyl group that can be selected as R f1 , R f2 and R f3 include a polybutenyl group, a polyisobutenyl group, an ethylene-propylene copolymer, and among these, a polybutenyl group or a polyisobutenyl group is preferred.
A f1 , A f2 and A f3 are each independently an alkylene group having 2 to 5 carbon atoms.
z1 is an integer of 0 to 10, preferably an integer of 1 to 4, more preferably 2 or 3.
z2 is an integer of 1 to 10, preferably an integer of 2 to 5, more preferably 3 or 4.
本発明の一態様で用いるホウ素変性アルケニルコハク酸イミド（Ｆ２）としては、例えば、前記一般式（ｆ－１）で表されるアルケニルコハク酸ビスイミドのホウ素変性体、及び、下記一般式（ｆ－２）で表されるアルケニルコハク酸モノイミドのホウ素変性体等が挙げられる。
Examples of the boron-modified alkenylsuccinimide (F2) used in one embodiment of the present invention include a boron-modified alkenylsuccinimide bisimide represented by the above general formula (f-1), and the following general formula (f- Examples include boron-modified alkenylsuccinic acid monoimide represented by 2).
本発明の一態様において、成分（Ｆ２）を構成するホウ素原子と窒素原子の比率〔Ｂ／Ｎ〕としては、好ましくは０．１以上、より好ましくは０．２以上、更に好ましくは０．３以上、より更に好ましくは０．５以上、特に好ましくは０．７以上である。
In one embodiment of the present invention, the ratio [B/N] of boron atoms and nitrogen atoms constituting component (F2) is preferably 0.1 or more, more preferably 0.2 or more, and even more preferably 0.3. Above, it is even more preferably 0.5 or more, particularly preferably 0.7 or more.
本発明の一態様の潤滑油組成物において、高温清浄性の観点から、成分（Ｆ１）と成分（Ｆ２）の含有量比〔（Ｆ１）／（Ｆ２）〕は、質量比で、好ましくは０．１０以上、より好ましくは０．５０以上、更に好ましくは０．７０以上、より更に好ましくは１．００以上、特に好ましくは１．２０以上であり、また、好ましくは５．００未満、より好ましくは４．００未満、更に好ましくは３．００未満、より更に好ましくは２．５０未満、特に好ましくは２．００未満である。
In the lubricating oil composition of one embodiment of the present invention, from the viewpoint of high temperature cleanliness, the content ratio [(F1)/(F2)] of component (F1) and component (F2) is preferably 0 in terms of mass ratio. .10 or more, more preferably 0.50 or more, even more preferably 0.70 or more, even more preferably 1.00 or more, particularly preferably 1.20 or more, and preferably less than 5.00, more preferably is less than 4.00, more preferably less than 3.00, even more preferably less than 2.50, particularly preferably less than 2.00.
本発明の一態様の潤滑油組成物において、成分（Ｆ２）に由来するホウ素原子と、成分（Ｆ）に由来する窒素原子との含有量比〔Ｂ／Ｎ〕が、質量比で、好ましくは０．０１以上、より好ましくは０．０５以上、更に好ましくは０．１０以上、より更に好ましくは０．２０以上、特に好ましくは０．３０以上であり、また、好ましくは０．９０以下、より好ましくは０．８０以下、更に好ましくは０．７０以下、より更に好ましくは０．６０以下、特に好ましくは０．５５以下である。
In the lubricating oil composition of one embodiment of the present invention, the content ratio [B/N] of boron atoms derived from component (F2) to nitrogen atoms derived from component (F) is preferably 0.01 or more, more preferably 0.05 or more, still more preferably 0.10 or more, even more preferably 0.20 or more, particularly preferably 0.30 or more, and preferably 0.90 or more, It is preferably 0.80 or less, more preferably 0.70 or less, even more preferably 0.60 or less, particularly preferably 0.55 or less.
本発明の一態様の潤滑油組成物において、成分（Ｆ）の含有量は、前記潤滑油組成物の全量（１００質量％）基準で、好ましくは０．５０質量％以上、より好ましくは１．０質量％以上、更に好ましくは２．０質量％以上、より更に好ましくは３．０質量％以上、特に好ましくは４．０質量％以上であり、また、好ましくは１２．０質量％以下、より好ましくは１０．０質量％以下、更に好ましくは９．０質量％以下、より更に好ましくは８．５質量％以下、特に好ましくは８．０質量％以下である。
In the lubricating oil composition of one aspect of the present invention, the content of component (F) is preferably 0.50% by mass or more, more preferably 1.5% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. 0% by mass or more, more preferably 2.0% by mass or more, even more preferably 3.0% by mass or more, particularly preferably 4.0% by mass or more, and preferably 12.0% by mass or less, more preferably Preferably it is 10.0% by mass or less, more preferably 9.0% by mass or less, even more preferably 8.5% by mass or less, particularly preferably 8.0% by mass or less.
本発明の一態様の潤滑油組成物において、成分（Ｆ）の窒素原子換算での含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．０１０～０．２００質量％、より好ましくは０．０２０～０．１７０質量％、更に好ましくは０．０３０～０．１３０質量％、より更に好ましくは０．０４０～０．１００質量％、特に好ましくは０．０５０～０．０９０質量％である。
In the lubricating oil composition of one aspect of the present invention, the content of component (F) in terms of nitrogen atoms is preferably 0.010 to 0.200 based on the total amount (100% by mass) of the lubricating oil composition. % by mass, more preferably 0.020-0.170% by mass, even more preferably 0.030-0.130% by mass, even more preferably 0.040-0.100% by mass, particularly preferably 0.050-0.050% by mass. It is 0.090% by mass.
本発明の一態様の潤滑油組成物において、成分（Ｆ１）の含有量は、前記潤滑油組成物の全量（１００質量％）基準で、好ましくは０．１０質量％以上、より好ましくは０．５０質量％以上、更に好ましくは１．０質量％以上、より更に好ましくは１．５質量％以上、特に好ましくは２．０質量％以上であり、また、好ましくは１０．０質量％以下、より好ましくは８．０質量％以下、更に好ましくは７．０質量％以下、より更に好ましくは６．５質量％以下、特に好ましくは６．０質量％以下である。
In the lubricating oil composition of one aspect of the present invention, the content of component (F1) is preferably 0.10% by mass or more, more preferably 0.10% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. 50% by mass or more, more preferably 1.0% by mass or more, even more preferably 1.5% by mass or more, particularly preferably 2.0% by mass or more, and preferably 10.0% by mass or less, more preferably Preferably it is 8.0% by mass or less, more preferably 7.0% by mass or less, even more preferably 6.5% by mass or less, particularly preferably 6.0% by mass or less.
本発明の一態様の潤滑油組成物において、成分（Ｆ１）の窒素原子換算での含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．００５～０．１５０質量％、より好ましくは０．０１０～０．１２０質量％、更に好ましくは０．０１５～０．１００質量％、より更に好ましくは０．０２０～０．０８０質量％、特に好ましくは０．０２５～０．０７０質量％である。
In the lubricating oil composition of one aspect of the present invention, the content of component (F1) in terms of nitrogen atoms is preferably 0.005 to 0.150 based on the total amount (100% by mass) of the lubricating oil composition. mass%, more preferably 0.010 to 0.120 mass%, still more preferably 0.015 to 0.100 mass%, even more preferably 0.020 to 0.080 mass%, particularly preferably 0.025 to 0.025 mass% It is 0.070% by mass.
本発明の一態様の潤滑油組成物において、成分（Ｆ２）の含有量は、前記潤滑油組成物の全量（１００質量％）基準で、好ましくは０．１０質量％以上、より好ましくは０．３０質量％以上、更に好ましくは０．５０質量％以上、より更に好ましくは１．０質量％以上、特に好ましくは１．５質量％以上であり、また、好ましくは８．０質量％以下、より好ましくは７．０質量％以下、更に好ましくは６．０質量％以下、より更に好ましくは５．０質量％以下、特に好ましくは４．０質量％以下である。
In the lubricating oil composition of one embodiment of the present invention, the content of component (F2) is preferably 0.10% by mass or more, more preferably 0.10% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. 30% by mass or more, more preferably 0.50% by mass or more, even more preferably 1.0% by mass or more, particularly preferably 1.5% by mass or more, and preferably 8.0% by mass or less, more preferably Preferably it is 7.0% by mass or less, more preferably 6.0% by mass or less, even more preferably 5.0% by mass or less, particularly preferably 4.0% by mass or less.
本発明の一態様の潤滑油組成物において、成分（Ｆ２）のホウ素原子換算での含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．００１～０．１００質量％、より好ましくは０．００５～０．０９０質量％、更に好ましくは０．０１０～０．０８０質量％、より更に好ましくは０．０１５～０．０７０質量％、特に好ましくは０．０２０～０．０６０質量％である。
In the lubricating oil composition of one aspect of the present invention, the content of component (F2) in terms of boron atoms is preferably 0.001 to 0.100 based on the total amount (100% by mass) of the lubricating oil composition. % by mass, more preferably 0.005-0.090% by mass, even more preferably 0.010-0.080% by mass, even more preferably 0.015-0.070% by mass, particularly preferably 0.020-0.020% by mass. It is 0.060% by mass.
＜成分（Ｇ）：金属系清浄剤＞
本発明の一態様の潤滑油組成物は、成分（Ｇ）として、金属系清浄剤を含有してもよい。成分（Ｇ）を含有することで、高温清浄性がより良好な潤滑油組成物とすることができる。
本発明の一態様において、成分（Ｇ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (G): Metallic cleaning agent>
The lubricating oil composition of one embodiment of the present invention may contain a metal detergent as component (G). By containing component (G), a lubricating oil composition with better high-temperature cleanliness can be obtained.
In one embodiment of the present invention, component (G) may be used alone or in combination of two or more.
本発明の一態様の潤滑油組成物は、成分（Ｇ）として、金属系清浄剤を含有してもよい。成分（Ｇ）を含有することで、高温清浄性がより良好な潤滑油組成物とすることができる。
本発明の一態様において、成分（Ｇ）は、単独で用いてもよく、２種以上を併用してもよい。 <Component (G): Metallic cleaning agent>
The lubricating oil composition of one embodiment of the present invention may contain a metal detergent as component (G). By containing component (G), a lubricating oil composition with better high-temperature cleanliness can be obtained.
In one embodiment of the present invention, component (G) may be used alone or in combination of two or more.
本発明の一態様で用いる成分（Ｇ）としては、金属スルホネート、金属サリシレート、及び金属フェネート等の金属塩が挙げられる。また、当該金属塩を構成する金属原子としては、アルカリ金属及びアルカリ土類金属から選ばれる金属原子が好ましく、ナトリウム、カルシウム、マグネシウム、又はバリウムがより好ましく、カルシウムが更に好ましい。
Component (G) used in one embodiment of the present invention includes metal salts such as metal sulfonates, metal salicylates, and metal phenates. Further, the metal atoms constituting the metal salt are preferably metal atoms selected from alkali metals and alkaline earth metals, more preferably sodium, calcium, magnesium, or barium, and still more preferably calcium.
本発明の一態様で用いる成分（Ｇ）は、カルシウムスルホネート、カルシウムサリシレート、及びカルシウムフェネートから選ばれる１種以上を含むことが好ましく、カルシウムサリシレートを含むことがより好ましい。
カルシウムサリシレートの含有割合としては、潤滑油組成物に含まれる金属系清浄剤の全量（１００質量％）基準で、好ましくは５０～１００質量％、より好ましくは６０～１００質量％、更に好ましくは７０～１００質量％、より更に好ましくは８０～１００質量％である。 Component (G) used in one aspect of the present invention preferably contains one or more selected from calcium sulfonate, calcium salicylate, and calcium phenate, and more preferably contains calcium salicylate.
The content of calcium salicylate is preferably 50 to 100% by mass, more preferably 60 to 100% by mass, even more preferably 70% by mass, based on the total amount (100% by mass) of the metal detergent contained in the lubricating oil composition. ~100% by weight, more preferably 80~100% by weight.
カルシウムサリシレートの含有割合としては、潤滑油組成物に含まれる金属系清浄剤の全量（１００質量％）基準で、好ましくは５０～１００質量％、より好ましくは６０～１００質量％、更に好ましくは７０～１００質量％、より更に好ましくは８０～１００質量％である。 Component (G) used in one aspect of the present invention preferably contains one or more selected from calcium sulfonate, calcium salicylate, and calcium phenate, and more preferably contains calcium salicylate.
The content of calcium salicylate is preferably 50 to 100% by mass, more preferably 60 to 100% by mass, even more preferably 70% by mass, based on the total amount (100% by mass) of the metal detergent contained in the lubricating oil composition. ~100% by weight, more preferably 80~100% by weight.
金属系清浄剤の塩基価としては、好ましくは０～６００ｍｇＫＯＨ／ｇである。
なお、本発明の一態様で用いる成分（Ｇ）は、中性金属系清浄剤であってもよく、過塩基性金属系清浄剤であってもよい。
なお、中性金属系清浄剤とは、塩基価が０～１００ｍｇＫＯＨ／ｇ以上の金属系清浄剤を意味するのに対して、過塩基性金属系清浄剤とは、塩基価が１００ｍｇＫＯＨ／ｇ超の金属系清浄剤を意味する。 The base number of the metal detergent is preferably 0 to 600 mgKOH/g.
Note that the component (G) used in one embodiment of the present invention may be a neutral metal-based detergent or an overbased metal-based detergent.
Note that a neutral metallic detergent means a metallic detergent with a base number of 0 to 100 mgKOH/g or more, whereas an overbased metallic detergent refers to a detergent with a base number of more than 100 mgKOH/g. means a metal-based cleaning agent.
なお、本発明の一態様で用いる成分（Ｇ）は、中性金属系清浄剤であってもよく、過塩基性金属系清浄剤であってもよい。
なお、中性金属系清浄剤とは、塩基価が０～１００ｍｇＫＯＨ／ｇ以上の金属系清浄剤を意味するのに対して、過塩基性金属系清浄剤とは、塩基価が１００ｍｇＫＯＨ／ｇ超の金属系清浄剤を意味する。 The base number of the metal detergent is preferably 0 to 600 mgKOH/g.
Note that the component (G) used in one embodiment of the present invention may be a neutral metal-based detergent or an overbased metal-based detergent.
Note that a neutral metallic detergent means a metallic detergent with a base number of 0 to 100 mgKOH/g or more, whereas an overbased metallic detergent refers to a detergent with a base number of more than 100 mgKOH/g. means a metal-based cleaning agent.
本発明の一態様の潤滑油組成物において、成分（Ｇ）の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは０．１０質量％以上、より好ましくは０．３０質量％以上、より好ましくは０．５０質量％以上、より好ましくは０．７０質量％以上、更に好ましくは１．００質量％以上、更に好ましくは１．２０質量％以上、更に好ましくは１．５０質量％以上、より更に好ましくは１．７０質量％以上、特に好ましくは１．９０質量％以上であり、また、好ましくは１０．０質量％以下、より好ましくは８．０質量％以下、より好ましくは７．０質量％以下、更に好ましくは６．０質量％以下、より更に好ましくは５．０質量％以下、特に好ましくは４．０質量％以下である。
In the lubricating oil composition of one embodiment of the present invention, the content of component (G) is preferably 0.10% by mass or more, more preferably 0.10% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. 30% by mass or more, more preferably 0.50% by mass or more, more preferably 0.70% by mass or more, even more preferably 1.00% by mass or more, even more preferably 1.20% by mass or more, even more preferably 1. 50% by mass or more, even more preferably 1.70% by mass or more, particularly preferably 1.90% by mass or more, and preferably 10.0% by mass or less, more preferably 8.0% by mass or less, and more Preferably it is 7.0% by mass or less, more preferably 6.0% by mass or less, even more preferably 5.0% by mass or less, particularly preferably 4.0% by mass or less.
本発明の一態様の潤滑油組成物において、成分（Ｇ）のカルシウム原子換算での含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは５０質量ｐｐｍ以上、より好ましくは１００質量ｐｐｍ以上、より好ましくは１５０質量ｐｐｍ以上、より好ましくは２００質量ｐｐｍ以上、更に好ましくは２５０質量ｐｐｍ以上、更に好ましくは３００質量ｐｐｍ以上、更に好ましくは３５０質量ｐｐｍ以上、より更に好ましくは４００質量ｐｐｍ以上、特に好ましくは４５０質量ｐｐｍ以上であり、また、好ましくは３０００質量ｐｐｍ以下、より好ましくは２５００質量ｐｐｍ以下、より好ましくは２０００質量ｐｐｍ以下、更に好ましくは１５００質量ｐｐｍ以下、より更に好ましくは１０００質量ｐｐｍ以下、特に好ましくは８００質量ｐｐｍ以下である。
In the lubricating oil composition of one embodiment of the present invention, the content of component (G) in terms of calcium atoms is preferably 50 mass ppm or more, more preferably is 100 mass ppm or more, more preferably 150 mass ppm or more, more preferably 200 mass ppm or more, even more preferably 250 mass ppm or more, still more preferably 300 mass ppm or more, still more preferably 350 mass ppm or more, even more preferably 400 mass ppm or more, particularly preferably 450 mass ppm or more, and preferably 3000 mass ppm or less, more preferably 2500 mass ppm or less, more preferably 2000 mass ppm or less, still more preferably 1500 mass ppm or less, and even more Preferably it is 1000 mass ppm or less, particularly preferably 800 mass ppm or less.
＜潤滑油用添加剤＞
本発明の一態様の潤滑油組成物は、本発明の効果を損なわない範囲で、必要に応じて、更に成分（Ｂ）～（Ｇ）以外の潤滑油用添加剤を含有してもよい。
このような潤滑油用添加剤としては、例えば、流動点降下剤、粘度指数向上剤、摩擦調整剤、耐摩耗剤、極圧剤、金属不活性化剤、油性剤、防錆剤、消泡剤等が挙げられる。
これらの潤滑油用添加剤は、それぞれ、単独で用いてもよく、２種以上を併用してもよい。 <Additives for lubricating oil>
The lubricating oil composition of one embodiment of the present invention may further contain lubricating oil additives other than components (B) to (G), as necessary, within a range that does not impair the effects of the present invention.
Examples of such lubricating oil additives include pour point depressants, viscosity index improvers, friction modifiers, antiwear agents, extreme pressure agents, metal deactivators, oil agents, rust preventives, and antifoaming agents. agents, etc.
These lubricating oil additives may be used alone or in combination of two or more.
本発明の一態様の潤滑油組成物は、本発明の効果を損なわない範囲で、必要に応じて、更に成分（Ｂ）～（Ｇ）以外の潤滑油用添加剤を含有してもよい。
このような潤滑油用添加剤としては、例えば、流動点降下剤、粘度指数向上剤、摩擦調整剤、耐摩耗剤、極圧剤、金属不活性化剤、油性剤、防錆剤、消泡剤等が挙げられる。
これらの潤滑油用添加剤は、それぞれ、単独で用いてもよく、２種以上を併用してもよい。 <Additives for lubricating oil>
The lubricating oil composition of one embodiment of the present invention may further contain lubricating oil additives other than components (B) to (G), as necessary, within a range that does not impair the effects of the present invention.
Examples of such lubricating oil additives include pour point depressants, viscosity index improvers, friction modifiers, antiwear agents, extreme pressure agents, metal deactivators, oil agents, rust preventives, and antifoaming agents. agents, etc.
These lubricating oil additives may be used alone or in combination of two or more.
これらの潤滑油用添加剤のそれぞれの含有量は、本発明の効果を損なわない範囲内で、適宜調製することができるが、潤滑油組成物の全量（１００質量％）基準で、それぞれの添加剤ごとに独立して、通常０．００１～１５質量％、好ましくは０．００５～１０質量％、より好ましくは０．０１～５質量％である。
The content of each of these lubricating oil additives can be adjusted as appropriate within a range that does not impair the effects of the present invention, but the content of each additive is based on the total amount (100% by mass) of the lubricating oil composition. The amount for each agent is usually 0.001 to 15% by weight, preferably 0.005 to 10% by weight, and more preferably 0.01 to 5% by weight.
［流動点降下剤］
本発明の一態様の潤滑油組成物は、さらに流動点降下剤を含有してもよい。流動点降下剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる流動点降下剤としては、例えば、エチレン－酢酸ビニル共重合体、塩素化パラフィンとナフタレンとの縮合物、塩素化パラフィンとフェノールとの縮合物、ポリメタクリレート、ポリアルキルスチレン等が挙げられる。
本発明の一態様で用いる流動点降下剤の質量平均分子量（Ｍｗ）は、５，０００以上、７，０００以上、１０，０００以上、１５，０００以上、２０，０００以上、２５，０００以上、３０，０００以上、３５，０００以上、４０，０００以上、４５，０００以上、５０，０００以上、５５，０００以上、又は６０，０００以上としてもよく、また、１５０，０００以下、１２０，０００以下、１００，０００以下、９０，０００以下、又は８０，０００以下としてもよい。 [Pour point depressant]
The lubricating oil composition of one aspect of the present invention may further contain a pour point depressant. The pour point depressants may be used alone or in combination of two or more.
Examples of pour point depressants used in one embodiment of the present invention include ethylene-vinyl acetate copolymers, condensates of chlorinated paraffins and naphthalene, condensates of chlorinated paraffins and phenols, polymethacrylates, and polyalkylstyrenes. etc.
The mass average molecular weight (Mw) of the pour point depressant used in one aspect of the present invention is 5,000 or more, 7,000 or more, 10,000 or more, 15,000 or more, 20,000 or more, 25,000 or more, 30,000 or more, 35,000 or more, 40,000 or more, 45,000 or more, 50,000 or more, 55,000 or more, or 60,000 or more, and 150,000 or less, 120,000 or less , 100,000 or less, 90,000 or less, or 80,000 or less.
本発明の一態様の潤滑油組成物は、さらに流動点降下剤を含有してもよい。流動点降下剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる流動点降下剤としては、例えば、エチレン－酢酸ビニル共重合体、塩素化パラフィンとナフタレンとの縮合物、塩素化パラフィンとフェノールとの縮合物、ポリメタクリレート、ポリアルキルスチレン等が挙げられる。
本発明の一態様で用いる流動点降下剤の質量平均分子量（Ｍｗ）は、５，０００以上、７，０００以上、１０，０００以上、１５，０００以上、２０，０００以上、２５，０００以上、３０，０００以上、３５，０００以上、４０，０００以上、４５，０００以上、５０，０００以上、５５，０００以上、又は６０，０００以上としてもよく、また、１５０，０００以下、１２０，０００以下、１００，０００以下、９０，０００以下、又は８０，０００以下としてもよい。 [Pour point depressant]
The lubricating oil composition of one aspect of the present invention may further contain a pour point depressant. The pour point depressants may be used alone or in combination of two or more.
Examples of pour point depressants used in one embodiment of the present invention include ethylene-vinyl acetate copolymers, condensates of chlorinated paraffins and naphthalene, condensates of chlorinated paraffins and phenols, polymethacrylates, and polyalkylstyrenes. etc.
The mass average molecular weight (Mw) of the pour point depressant used in one aspect of the present invention is 5,000 or more, 7,000 or more, 10,000 or more, 15,000 or more, 20,000 or more, 25,000 or more, 30,000 or more, 35,000 or more, 40,000 or more, 45,000 or more, 50,000 or more, 55,000 or more, or 60,000 or more, and 150,000 or less, 120,000 or less , 100,000 or less, 90,000 or less, or 80,000 or less.
［粘度指数向上剤］
本発明の一態様の潤滑油組成物は、さらに粘度指数向上剤を含有してもよい。粘度指数向上剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる粘度指数向上剤としては、例えば、非分散型ポリメタクリレート、分散型ポリメタクリレート、オレフィン系共重合体（例えば、エチレン－プロピレン共重合体等）、分散型オレフィン系共重合体、スチレン系共重合体（例えば、スチレン－ジエン共重合体、スチレン－イソプレン共重合体等）等の重合体が挙げられる。
本発明の一態様で用いる粘度指数向上剤の重量平均分子量（Ｍｗ）は、５，０００以上、７，０００以上、１０，０００以上、１５，０００以上、又は２０，０００以上としてもよく、また、１，０００，０００以下、７００，０００以下、５００，０００以下、３００，０００以下、２００，０００以下、１００，０００以下、又は５０，０００以下としてもよい。 [Viscosity index improver]
The lubricating oil composition of one embodiment of the present invention may further contain a viscosity index improver. The viscosity index improvers may be used alone or in combination of two or more.
Examples of the viscosity index improver used in one embodiment of the present invention include non-dispersed polymethacrylate, dispersed polymethacrylate, olefin copolymer (e.g., ethylene-propylene copolymer, etc.), and dispersed olefin copolymer. Examples include polymers such as polymers, styrene copolymers (eg, styrene-diene copolymers, styrene-isoprene copolymers, etc.).
The weight average molecular weight (Mw) of the viscosity index improver used in one aspect of the present invention may be 5,000 or more, 7,000 or more, 10,000 or more, 15,000 or more, or 20,000 or more; , 1,000,000 or less, 700,000 or less, 500,000 or less, 300,000 or less, 200,000 or less, 100,000 or less, or 50,000 or less.
本発明の一態様の潤滑油組成物は、さらに粘度指数向上剤を含有してもよい。粘度指数向上剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる粘度指数向上剤としては、例えば、非分散型ポリメタクリレート、分散型ポリメタクリレート、オレフィン系共重合体（例えば、エチレン－プロピレン共重合体等）、分散型オレフィン系共重合体、スチレン系共重合体（例えば、スチレン－ジエン共重合体、スチレン－イソプレン共重合体等）等の重合体が挙げられる。
本発明の一態様で用いる粘度指数向上剤の重量平均分子量（Ｍｗ）は、５，０００以上、７，０００以上、１０，０００以上、１５，０００以上、又は２０，０００以上としてもよく、また、１，０００，０００以下、７００，０００以下、５００，０００以下、３００，０００以下、２００，０００以下、１００，０００以下、又は５０，０００以下としてもよい。 [Viscosity index improver]
The lubricating oil composition of one embodiment of the present invention may further contain a viscosity index improver. The viscosity index improvers may be used alone or in combination of two or more.
Examples of the viscosity index improver used in one embodiment of the present invention include non-dispersed polymethacrylate, dispersed polymethacrylate, olefin copolymer (e.g., ethylene-propylene copolymer, etc.), and dispersed olefin copolymer. Examples include polymers such as polymers, styrene copolymers (eg, styrene-diene copolymers, styrene-isoprene copolymers, etc.).
The weight average molecular weight (Mw) of the viscosity index improver used in one aspect of the present invention may be 5,000 or more, 7,000 or more, 10,000 or more, 15,000 or more, or 20,000 or more; , 1,000,000 or less, 700,000 or less, 500,000 or less, 300,000 or less, 200,000 or less, 100,000 or less, or 50,000 or less.
［摩擦調整剤及び耐摩耗剤］
本発明の一態様の潤滑油組成物は、さらに摩擦調整剤又は耐摩耗剤を含有してもよい。摩擦調整剤又は耐摩耗剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる摩擦調整剤及び耐摩耗剤としては、例えば、摩擦調整剤及び耐摩耗剤としては、例えば、硫化オレフィン、ジアルキルポリスルフィド、ジアリールアルキルポリスルフィド、ジアリールポリスルフィド等の硫黄系化合物；リン酸エステル、チオリン酸エステル、亜リン酸エステル、アルキルハイドロゲンホスファイト、リン酸エステルアミン塩、亜リン酸エステルアミン塩等のリン系化合物；脂肪酸エステル、脂肪酸アミド、脂肪酸、脂肪族アルコール、脂肪族エーテル、ウレア系化合物、ヒドラジド系化合物等の無灰系摩擦調整剤；等が挙げられる。 [Friction modifier and anti-wear agent]
The lubricating oil composition of one embodiment of the present invention may further contain a friction modifier or an antiwear agent. The friction modifier or anti-wear agent may be used alone or in combination of two or more.
Examples of friction modifiers and antiwear agents used in one embodiment of the present invention include sulfur-based compounds such as sulfurized olefins, dialkyl polysulfides, diarylalkyl polysulfides, and diaryl polysulfides; Phosphorous compounds such as acid esters, thiophosphoric acid esters, phosphite esters, alkyl hydrogen phosphites, phosphoric acid ester amine salts, phosphite ester amine salts; fatty acid esters, fatty acid amides, fatty acids, aliphatic alcohols, aliphatic ethers , urea compounds, hydrazide compounds, and other ashless friction modifiers.
本発明の一態様の潤滑油組成物は、さらに摩擦調整剤又は耐摩耗剤を含有してもよい。摩擦調整剤又は耐摩耗剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる摩擦調整剤及び耐摩耗剤としては、例えば、摩擦調整剤及び耐摩耗剤としては、例えば、硫化オレフィン、ジアルキルポリスルフィド、ジアリールアルキルポリスルフィド、ジアリールポリスルフィド等の硫黄系化合物；リン酸エステル、チオリン酸エステル、亜リン酸エステル、アルキルハイドロゲンホスファイト、リン酸エステルアミン塩、亜リン酸エステルアミン塩等のリン系化合物；脂肪酸エステル、脂肪酸アミド、脂肪酸、脂肪族アルコール、脂肪族エーテル、ウレア系化合物、ヒドラジド系化合物等の無灰系摩擦調整剤；等が挙げられる。 [Friction modifier and anti-wear agent]
The lubricating oil composition of one embodiment of the present invention may further contain a friction modifier or an antiwear agent. The friction modifier or anti-wear agent may be used alone or in combination of two or more.
Examples of friction modifiers and antiwear agents used in one embodiment of the present invention include sulfur-based compounds such as sulfurized olefins, dialkyl polysulfides, diarylalkyl polysulfides, and diaryl polysulfides; Phosphorous compounds such as acid esters, thiophosphoric acid esters, phosphite esters, alkyl hydrogen phosphites, phosphoric acid ester amine salts, phosphite ester amine salts; fatty acid esters, fatty acid amides, fatty acids, aliphatic alcohols, aliphatic ethers , urea compounds, hydrazide compounds, and other ashless friction modifiers.
［極圧剤］
本発明の一態様の潤滑油組成物は、さらに極圧剤を含有してもよい。極圧剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる極圧剤としては、例えば、硫化オレフィン、ジアルキルポリスルフィド、ジアリールアルキルポリスルフィド、ジアリールポリスルフィド等の硫黄系化合物、リン酸エステル、チオリン酸エステル、亜リン酸エステル、アルキルハイドロゲンホスファイト、リン酸エステルアミン塩、亜リン酸エステルアミン塩等のリン系化合物等が挙げられる。 [Extreme pressure agent]
The lubricating oil composition of one embodiment of the present invention may further contain an extreme pressure agent. The extreme pressure agent may be used alone or in combination of two or more.
Examples of the extreme pressure agent used in one embodiment of the present invention include sulfur-based compounds such as sulfurized olefins, dialkyl polysulfides, diarylalkyl polysulfides, and diaryl polysulfides, phosphoric acid esters, thiophosphoric acid esters, phosphorous esters, and alkyl hydrogen phosphites. , phosphoric acid ester amine salts, phosphorous acid ester amine salts, and the like.
本発明の一態様の潤滑油組成物は、さらに極圧剤を含有してもよい。極圧剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる極圧剤としては、例えば、硫化オレフィン、ジアルキルポリスルフィド、ジアリールアルキルポリスルフィド、ジアリールポリスルフィド等の硫黄系化合物、リン酸エステル、チオリン酸エステル、亜リン酸エステル、アルキルハイドロゲンホスファイト、リン酸エステルアミン塩、亜リン酸エステルアミン塩等のリン系化合物等が挙げられる。 [Extreme pressure agent]
The lubricating oil composition of one embodiment of the present invention may further contain an extreme pressure agent. The extreme pressure agent may be used alone or in combination of two or more.
Examples of the extreme pressure agent used in one embodiment of the present invention include sulfur-based compounds such as sulfurized olefins, dialkyl polysulfides, diarylalkyl polysulfides, and diaryl polysulfides, phosphoric acid esters, thiophosphoric acid esters, phosphorous esters, and alkyl hydrogen phosphites. , phosphoric acid ester amine salts, phosphorous acid ester amine salts, and the like.
［金属不活性化剤］
本発明の一態様の潤滑油組成物は、さらに金属不活性化剤を含有してもよい。金属不活性化剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる金属不活性化剤としては、例えば、ベンゾトリアゾール、トリアゾール誘導体、ベンゾトリアゾール誘導体、チアジアゾール誘導体等が挙げられる。 [Metal deactivator]
The lubricating oil composition of one embodiment of the present invention may further contain a metal deactivator. The metal deactivators may be used alone or in combination of two or more.
Examples of the metal deactivator used in one embodiment of the present invention include benzotriazole, triazole derivatives, benzotriazole derivatives, thiadiazole derivatives, and the like.
本発明の一態様の潤滑油組成物は、さらに金属不活性化剤を含有してもよい。金属不活性化剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる金属不活性化剤としては、例えば、ベンゾトリアゾール、トリアゾール誘導体、ベンゾトリアゾール誘導体、チアジアゾール誘導体等が挙げられる。 [Metal deactivator]
The lubricating oil composition of one embodiment of the present invention may further contain a metal deactivator. The metal deactivators may be used alone or in combination of two or more.
Examples of the metal deactivator used in one embodiment of the present invention include benzotriazole, triazole derivatives, benzotriazole derivatives, thiadiazole derivatives, and the like.
［油性剤］
本発明の一態様の潤滑油組成物は、さらに油性剤を含有してもよい。油性剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる油性剤としては、例えば、ステアリン酸、オレイン酸等の脂肪族飽和及び不飽和モノカルボン酸、ダイマー酸、水添ダイマー酸等の重合脂肪酸、リシノレイン酸、１２－ヒドロキシステアリン酸等のヒドロキシ脂肪酸、ラウリルアルコール、オレイルアルコール等の脂肪族飽和及び不飽和モノアルコール、ステアリルアミン、オレイルアミン等の脂肪族飽和及び不飽和モノアミン、ラウリン酸アミド、オレイン酸アミド等の脂肪族飽和及び不飽和モノカルボン酸アミド等が挙げられる。 [Oil-based agent]
The lubricating oil composition of one embodiment of the present invention may further contain an oily agent. The oily agents may be used alone or in combination of two or more.
Examples of the oily agent used in one embodiment of the present invention include aliphatic saturated and unsaturated monocarboxylic acids such as stearic acid and oleic acid, polymerized fatty acids such as dimer acid and hydrogenated dimer acid, ricinoleic acid, and 12-hydroxystearin. Hydroxy fatty acids such as acids; aliphatic saturated and unsaturated monoalcohols such as lauryl alcohol and oleyl alcohol; aliphatic saturated and unsaturated monoamines such as stearylamine and oleylamine; aliphatic saturated and unsaturated monoamines such as lauric acid amide and oleic acid amide. Examples include saturated monocarboxylic acid amides.
本発明の一態様の潤滑油組成物は、さらに油性剤を含有してもよい。油性剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる油性剤としては、例えば、ステアリン酸、オレイン酸等の脂肪族飽和及び不飽和モノカルボン酸、ダイマー酸、水添ダイマー酸等の重合脂肪酸、リシノレイン酸、１２－ヒドロキシステアリン酸等のヒドロキシ脂肪酸、ラウリルアルコール、オレイルアルコール等の脂肪族飽和及び不飽和モノアルコール、ステアリルアミン、オレイルアミン等の脂肪族飽和及び不飽和モノアミン、ラウリン酸アミド、オレイン酸アミド等の脂肪族飽和及び不飽和モノカルボン酸アミド等が挙げられる。 [Oil-based agent]
The lubricating oil composition of one embodiment of the present invention may further contain an oily agent. The oily agents may be used alone or in combination of two or more.
Examples of the oily agent used in one embodiment of the present invention include aliphatic saturated and unsaturated monocarboxylic acids such as stearic acid and oleic acid, polymerized fatty acids such as dimer acid and hydrogenated dimer acid, ricinoleic acid, and 12-hydroxystearin. Hydroxy fatty acids such as acids; aliphatic saturated and unsaturated monoalcohols such as lauryl alcohol and oleyl alcohol; aliphatic saturated and unsaturated monoamines such as stearylamine and oleylamine; aliphatic saturated and unsaturated monoamines such as lauric acid amide and oleic acid amide. Examples include saturated monocarboxylic acid amides.
［防錆剤］
本発明の一態様の潤滑油組成物は、さらに防錆剤を含有してもよい。防錆剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる防錆剤としては、例えば、脂肪酸、アルケニルコハク酸ハーフエステル、脂肪酸セッケン、アルキルスルホン酸塩、多価アルコール脂肪酸エステル、脂肪酸アミン、酸化パラフィン、アルキルポリオキシエチレンエーテル等が挙げられる。 [anti-rust]
The lubricating oil composition of one embodiment of the present invention may further contain a rust inhibitor. The rust inhibitors may be used alone or in combination of two or more.
Examples of the rust preventive agent used in one embodiment of the present invention include fatty acids, alkenyl succinic acid half esters, fatty acid soaps, alkyl sulfonates, polyhydric alcohol fatty acid esters, fatty acid amines, oxidized paraffins, alkyl polyoxyethylene ethers, and the like. Can be mentioned.
本発明の一態様の潤滑油組成物は、さらに防錆剤を含有してもよい。防錆剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる防錆剤としては、例えば、脂肪酸、アルケニルコハク酸ハーフエステル、脂肪酸セッケン、アルキルスルホン酸塩、多価アルコール脂肪酸エステル、脂肪酸アミン、酸化パラフィン、アルキルポリオキシエチレンエーテル等が挙げられる。 [anti-rust]
The lubricating oil composition of one embodiment of the present invention may further contain a rust inhibitor. The rust inhibitors may be used alone or in combination of two or more.
Examples of the rust preventive agent used in one embodiment of the present invention include fatty acids, alkenyl succinic acid half esters, fatty acid soaps, alkyl sulfonates, polyhydric alcohol fatty acid esters, fatty acid amines, oxidized paraffins, alkyl polyoxyethylene ethers, and the like. Can be mentioned.
［消泡剤］
本発明の一態様の潤滑油組成物は、さらに消泡剤を含有してもよい。消泡剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる消泡剤としては、例えば、アルキルシリコーン系消泡剤、フルオロシリコーン系消泡剤、フルオロアルキルエーテル系消泡剤等が挙げられる。 [Defoaming agent]
The lubricating oil composition of one embodiment of the present invention may further contain an antifoaming agent. Antifoaming agents may be used alone or in combination of two or more.
Examples of the antifoaming agent used in one embodiment of the present invention include alkyl silicone antifoaming agents, fluorosilicone antifoaming agents, fluoroalkyl ether antifoaming agents, and the like.
本発明の一態様の潤滑油組成物は、さらに消泡剤を含有してもよい。消泡剤は、単独で用いてもよく、２種以上を併用してもよい。
本発明の一態様で用いる消泡剤としては、例えば、アルキルシリコーン系消泡剤、フルオロシリコーン系消泡剤、フルオロアルキルエーテル系消泡剤等が挙げられる。 [Defoaming agent]
The lubricating oil composition of one embodiment of the present invention may further contain an antifoaming agent. Antifoaming agents may be used alone or in combination of two or more.
Examples of the antifoaming agent used in one embodiment of the present invention include alkyl silicone antifoaming agents, fluorosilicone antifoaming agents, fluoroalkyl ether antifoaming agents, and the like.
＜潤滑油組成物の製造方法＞
本発明の一態様の潤滑油組成物の製造方法としては、特に制限はないが、生産性の観点から、基油（Ａ）に、上述の成分（Ｂ）及び（Ｃ）と共に、必要に応じて、成分（Ｄ）～（Ｇ）及び他の潤滑油用添加剤を配合する工程を有する、方法であることが好ましい。 <Method for producing lubricating oil composition>
The method for producing the lubricating oil composition of one embodiment of the present invention is not particularly limited, but from the viewpoint of productivity, the base oil (A) may be added to the above-mentioned components (B) and (C) as necessary. Preferably, the method includes a step of blending components (D) to (G) and other lubricating oil additives.
本発明の一態様の潤滑油組成物の製造方法としては、特に制限はないが、生産性の観点から、基油（Ａ）に、上述の成分（Ｂ）及び（Ｃ）と共に、必要に応じて、成分（Ｄ）～（Ｇ）及び他の潤滑油用添加剤を配合する工程を有する、方法であることが好ましい。 <Method for producing lubricating oil composition>
The method for producing the lubricating oil composition of one embodiment of the present invention is not particularly limited, but from the viewpoint of productivity, the base oil (A) may be added to the above-mentioned components (B) and (C) as necessary. Preferably, the method includes a step of blending components (D) to (G) and other lubricating oil additives.
〔潤滑油組成物の性状〕
本発明の一態様の潤滑油組成物の４０℃における動粘度は、好ましくは１０～１２０ｍｍ２／ｓ、より好ましくは１５～１００ｍｍ２／ｓ、更に好ましくは２０～８０ｍｍ２／ｓ、より更に好ましくは２５～７０ｍｍ２／ｓ、特に好ましくは２７～６０ｍｍ２／ｓである。 [Properties of lubricating oil composition]
The kinematic viscosity at 40°C of the lubricating oil composition of one embodiment of the present invention is preferably 10 to 120 mm 2 /s, more preferably 15 to 100 mm 2 /s, even more preferably 20 to 80 mm 2 /s, even more preferably is 25 to 70 mm 2 /s, particularly preferably 27 to 60 mm 2 /s.
本発明の一態様の潤滑油組成物の４０℃における動粘度は、好ましくは１０～１２０ｍｍ２／ｓ、より好ましくは１５～１００ｍｍ２／ｓ、更に好ましくは２０～８０ｍｍ２／ｓ、より更に好ましくは２５～７０ｍｍ２／ｓ、特に好ましくは２７～６０ｍｍ２／ｓである。 [Properties of lubricating oil composition]
The kinematic viscosity at 40°C of the lubricating oil composition of one embodiment of the present invention is preferably 10 to 120 mm 2 /s, more preferably 15 to 100 mm 2 /s, even more preferably 20 to 80 mm 2 /s, even more preferably is 25 to 70 mm 2 /s, particularly preferably 27 to 60 mm 2 /s.
本発明の一態様の潤滑油組成物の１００℃における動粘度は、好ましくは２．５～２０．０ｍｍ２／ｓ、より好ましくは４．０～１８．０ｍｍ２／ｓ、更に好ましくは５．０～１５．０ｍｍ２／ｓ、より更に好ましくは６．０～１２．０ｍｍ２／ｓ、特に好ましくは７．０～１０．０ｍｍ２／ｓである。
The kinematic viscosity at 100° C. of the lubricating oil composition of one embodiment of the present invention is preferably 2.5 to 20.0 mm 2 /s, more preferably 4.0 to 18.0 mm 2 /s, and still more preferably 5.0 mm 2 /s. 0 to 15.0 mm 2 /s, more preferably 6.0 to 12.0 mm 2 /s, particularly preferably 7.0 to 10.0 mm 2 /s.
本発明の一態様の潤滑油組成物の粘度指数は、好ましくは８０以上、より好ましくは１００以上、より好ましくは１２０以上、更に好ましくは１５０以上、より更に好ましくは１７０以上、特に好ましくは２００以上である。
The viscosity index of the lubricating oil composition of one embodiment of the present invention is preferably 80 or more, more preferably 100 or more, more preferably 120 or more, even more preferably 150 or more, even more preferably 170 or more, and particularly preferably 200 or more. It is.
本発明の一態様の潤滑油組成物において、カルシウム原子の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは５０質量ｐｐｍ以上、より好ましくは１００質量ｐｐｍ以上、より好ましくは１５０質量ｐｐｍ以上、より好ましくは２００質量ｐｐｍ以上、更に好ましくは２５０質量ｐｐｍ以上、更に好ましくは３００質量ｐｐｍ以上、更に好ましくは３５０質量ｐｐｍ以上、より更に好ましくは４００質量ｐｐｍ以上、特に好ましくは４５０質量ｐｐｍ以上であり、また、好ましくは３０００質量ｐｐｍ以下、より好ましくは２５００質量ｐｐｍ以下、より好ましくは２０００質量ｐｐｍ以下、更に好ましくは１５００質量ｐｐｍ以下、より更に好ましくは１０００質量ｐｐｍ以下、特に好ましくは８００質量ｐｐｍ以下である。
In the lubricating oil composition of one aspect of the present invention, the content of calcium atoms is preferably 50 mass ppm or more, more preferably 100 mass ppm or more, and more preferably 50 mass ppm or more, based on the total amount (100 mass %) of the lubricating oil composition. Preferably 150 mass ppm or more, more preferably 200 mass ppm or more, still more preferably 250 mass ppm or more, still more preferably 300 mass ppm or more, still more preferably 350 mass ppm or more, even more preferably 400 mass ppm or more, particularly preferably is 450 mass ppm or more, and preferably 3000 mass ppm or less, more preferably 2500 mass ppm or less, more preferably 2000 mass ppm or less, still more preferably 1500 mass ppm or less, even more preferably 1000 mass ppm or less, Particularly preferably, it is 800 mass ppm or less.
本発明の一態様の潤滑油組成物において、亜鉛原子の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは５０質量ｐｐｍ以上、より好ましくは１００質量ｐｐｍ以上、更に好ましくは３００質量ｐｐｍ以上、より更に好ましくは５００質量ｐｐｍ以上、特に好ましくは７００質量ｐｐｍ以上であり、また、好ましくは７０００質量ｐｐｍ以下、より好ましくは５０００質量ｐｐｍ以下、更に好ましくは３０００質量ｐｐｍ以下、より更に好ましくは２０００質量ｐｐｍ以下、特に好ましくは１５００質量ｐｐｍ以下である。
In the lubricating oil composition of one aspect of the present invention, the content of zinc atoms is preferably 50 mass ppm or more, more preferably 100 mass ppm or more, and further Preferably 300 mass ppm or more, even more preferably 500 mass ppm or more, particularly preferably 700 mass ppm or more, and preferably 7000 mass ppm or less, more preferably 5000 mass ppm or less, still more preferably 3000 mass ppm or less. , even more preferably 2000 mass ppm or less, particularly preferably 1500 mass ppm or less.
本発明の一態様の潤滑油組成物において、モリブデン原子の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは１００質量ｐｐｍ以上、より好ましくは２００質量ｐｐｍ以上、更に好ましくは３００質量ｐｐｍ以上、より更に好ましくは４００質量ｐｐｍ以上、特に好ましくは５００質量ｐｐｍ以上であり、また、好ましくは７０００質量ｐｐｍ以下、より好ましくは５０００質量ｐｐｍ以下、更に好ましくは３０００質量ｐｐｍ以下、より更に好ましくは２０００質量ｐｐｍ以下、特に好ましくは１０００質量ｐｐｍ以下である。
In the lubricating oil composition of one aspect of the present invention, the content of molybdenum atoms is preferably 100 mass ppm or more, more preferably 200 mass ppm or more, and further Preferably 300 mass ppm or more, even more preferably 400 mass ppm or more, particularly preferably 500 mass ppm or more, and preferably 7000 mass ppm or less, more preferably 5000 mass ppm or less, still more preferably 3000 mass ppm or less. , more preferably 2000 mass ppm or less, particularly preferably 1000 mass ppm or less.
本発明の一態様の潤滑油組成物において、リン原子の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは５０質量ｐｐｍ以上、より好ましくは１００質量ｐｐｍ以上、更に好ましくは２００質量ｐｐｍ以上、より更に好ましくは３００質量ｐｐｍ以上、特に好ましくは４００質量ｐｐｍ以上であり、また、好ましくは１０００質量ｐｐｍ以下、より好ましくは９５０質量ｐｐｍ以下、更に好ましくは９００質量ｐｐｍ以下、より更に好ましくは８５０質量ｐｐｍ以下、特に好ましくは７５０質量ｐｐｍ以下である。
In the lubricating oil composition of one aspect of the present invention, the content of phosphorus atoms is preferably 50 mass ppm or more, more preferably 100 mass ppm or more, and further Preferably 200 mass ppm or more, even more preferably 300 mass ppm or more, particularly preferably 400 mass ppm or more, and preferably 1000 mass ppm or less, more preferably 950 mass ppm or less, still more preferably 900 mass ppm or less. , even more preferably 850 mass ppm or less, particularly preferably 750 mass ppm or less.
本発明の一態様の潤滑油組成物において、ホウ素原子の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは１０質量ｐｐｍ以上、より好ましくは５０質量ｐｐｍ以上、更に好ましくは１００質量ｐｐｍ以上、より更に好ましくは１５０質量ｐｐｍ以上、特に好ましくは２００質量ｐｐｍ以上であり、また、好ましくは１０００質量ｐｐｍ以下、より好ましくは９００質量ｐｐｍ以下、更に好ましくは８００質量ｐｐｍ以下、より更に好ましくは７００質量ｐｐｍ以下、特に好ましくは６００質量ｐｐｍ以下である。
In the lubricating oil composition of one aspect of the present invention, the content of boron atoms is preferably 10 mass ppm or more, more preferably 50 mass ppm or more, and further Preferably 100 mass ppm or more, even more preferably 150 mass ppm or more, particularly preferably 200 mass ppm or more, and preferably 1000 mass ppm or less, more preferably 900 mass ppm or less, still more preferably 800 mass ppm or less. , more preferably 700 mass ppm or less, particularly preferably 600 mass ppm or less.
本発明の一態様の潤滑油組成物において、窒素原子の含有量は、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは１００質量ｐｐｍ以上、より好ましくは５００質量ｐｐｍ以上、更に好ましくは１０００質量ｐｐｍ以上、より更に好ましくは１５００質量ｐｐｍ以上、特に好ましくは１８００質量ｐｐｍ以上であり、また、好ましくは８０００質量ｐｐｍ以下、より好ましくは６０００質量ｐｐｍ以下、更に好ましくは５０００質量ｐｐｍ以下、より更に好ましくは４０００質量ｐｐｍ以下、特に好ましくは３０００質量ｐｐｍ以下である。
In the lubricating oil composition of one aspect of the present invention, the nitrogen atom content is preferably 100 mass ppm or more, more preferably 500 mass ppm or more, and further Preferably 1000 mass ppm or more, even more preferably 1500 mass ppm or more, particularly preferably 1800 mass ppm or more, and preferably 8000 mass ppm or less, more preferably 6000 mass ppm or less, still more preferably 5000 mass ppm or less. , more preferably 4000 mass ppm or less, particularly preferably 3000 mass ppm or less.
本発明の一態様の潤滑油組成物に対して、後述の実施例に記載の耐銅溶出性試験を実施して測定した銅の溶出量は、好ましくは２５０質量ｐｐｍ未満、より好ましくは２２０質量ｐｐｍ未満、より好ましくは２００質量ｐｐｍ未満、更に好ましくは１８５質量ｐｐｍ未満、更に好ましくは１７０質量ｐｐｍ未満、より更に好ましくは１２０質量ｐｐｍ未満、特に好ましくは１００質量ｐｐｍ未満である。
The amount of copper eluted is preferably less than 250 mass ppm, more preferably 220 mass ppm, when the lubricating oil composition of one embodiment of the present invention is subjected to a copper leaching resistance test described in the Examples below. ppm by weight, more preferably less than 200 ppm by weight, even more preferably less than 185 ppm by weight, even more preferably less than 170 ppm by weight, even more preferably less than 120 ppm by weight, particularly preferably less than 100 ppm by weight.
本発明の一態様の潤滑油組成物に対して、後述の実施例に記載のホットチューブ試験を実施して、変色の程度を評価したメリット評点は、好ましくは７．０以上、より好ましくは７．５以上、更に好ましくは８．０以上、より更に好ましくは８．５以上、特に好ましくは９．０以上である。
The lubricating oil composition of one embodiment of the present invention is subjected to the hot tube test described in the Examples below, and the merit score is preferably 7.0 or higher, more preferably 7. .5 or more, more preferably 8.0 or more, even more preferably 8.5 or more, particularly preferably 9.0 or more.
〔潤滑油組成物の用途〕
本発明の一態様の潤滑油組成物は、耐銅溶出性に優れており、長期間にわたり良好なロングドレイン性を保持し得る。
そのため、本発明の一態様の潤滑油組成物は、上記特性を発揮し得る各種装置に適用することができるが、内燃機関における各部品間の潤滑に好適に使用し得、特に、内燃機関及び電動機を動力源として有するハイブリッドシステムの内燃機関における各部品間の潤滑に好適に使用し得る。 [Applications of lubricating oil composition]
The lubricating oil composition of one embodiment of the present invention has excellent copper elution resistance and can maintain good long drain properties over a long period of time.
Therefore, the lubricating oil composition of one embodiment of the present invention can be applied to various devices that can exhibit the above characteristics, and can be suitably used for lubrication between various parts in an internal combustion engine, and in particular, can be applied to various devices that can exhibit the above characteristics. It can be suitably used for lubrication between various parts in an internal combustion engine of a hybrid system having an electric motor as a power source.
本発明の一態様の潤滑油組成物は、耐銅溶出性に優れており、長期間にわたり良好なロングドレイン性を保持し得る。
そのため、本発明の一態様の潤滑油組成物は、上記特性を発揮し得る各種装置に適用することができるが、内燃機関における各部品間の潤滑に好適に使用し得、特に、内燃機関及び電動機を動力源として有するハイブリッドシステムの内燃機関における各部品間の潤滑に好適に使用し得る。 [Applications of lubricating oil composition]
The lubricating oil composition of one embodiment of the present invention has excellent copper elution resistance and can maintain good long drain properties over a long period of time.
Therefore, the lubricating oil composition of one embodiment of the present invention can be applied to various devices that can exhibit the above characteristics, and can be suitably used for lubrication between various parts in an internal combustion engine, and in particular, can be applied to various devices that can exhibit the above characteristics. It can be suitably used for lubrication between various parts in an internal combustion engine of a hybrid system having an electric motor as a power source.
また、本発明の一態様の潤滑油組成物の上述の特性を考慮すると、本発明は、以下の［Ｉ］及び［II］も提供し得る。
［Ｉ］上述の本発明の一態様の潤滑油組成物を充填した、ハイブリッドシステムに搭載される、内燃機関。
［II］上述の本発明の一態様の潤滑油組成物をハイブリッドシステムに搭載される内燃機関に適用した、内燃機関の潤滑方法。 Further, in consideration of the above-mentioned characteristics of the lubricating oil composition of one embodiment of the present invention, the present invention can also provide the following [I] and [II].
[I] An internal combustion engine installed in a hybrid system filled with the lubricating oil composition of one embodiment of the present invention described above.
[II] A method for lubricating an internal combustion engine, in which the lubricating oil composition of one embodiment of the present invention described above is applied to an internal combustion engine installed in a hybrid system.
［Ｉ］上述の本発明の一態様の潤滑油組成物を充填した、ハイブリッドシステムに搭載される、内燃機関。
［II］上述の本発明の一態様の潤滑油組成物をハイブリッドシステムに搭載される内燃機関に適用した、内燃機関の潤滑方法。 Further, in consideration of the above-mentioned characteristics of the lubricating oil composition of one embodiment of the present invention, the present invention can also provide the following [I] and [II].
[I] An internal combustion engine installed in a hybrid system filled with the lubricating oil composition of one embodiment of the present invention described above.
[II] A method for lubricating an internal combustion engine, in which the lubricating oil composition of one embodiment of the present invention described above is applied to an internal combustion engine installed in a hybrid system.
上記［Ｉ］及び［II］に記載のハイブリッドシステムは、内燃機関及び電動機を動力源として有する機構である。
上記［Ｉ］及び［II］に記載のハイブリッドシステムとしては、例えば、ハイブリッド自動車、ハイブリッド二輪車、ハイブリッド鉄道、ハイブリッド船舶等が挙げられる。
上記［Ｉ］の内燃機関は、上述の本発明の一態様の潤滑油組成物を充填したものであり、電動機である電気モーターと共に、ハイブリッドシステムに搭載される装置である。
また、上記［II］の内燃機関の潤滑方法は、上述の本発明の一態様の潤滑油組成物をハイブリッドシステムに搭載される内燃機関に適用することを規定したものであるが、当該潤滑油組成物は、電動機である電気モーターにも適用してもよい。 The hybrid system described in [I] and [II] above is a mechanism having an internal combustion engine and an electric motor as power sources.
Examples of the hybrid system described in [I] and [II] above include a hybrid automobile, a hybrid two-wheeled vehicle, a hybrid railway, a hybrid ship, and the like.
The internal combustion engine of [I] above is filled with the lubricating oil composition of one embodiment of the present invention described above, and is a device that is installed in a hybrid system together with an electric motor.
Further, the method for lubricating an internal combustion engine in [II] above specifies that the lubricating oil composition of one embodiment of the present invention described above is applied to an internal combustion engine installed in a hybrid system. The composition may also be applied to electric motors.
上記［Ｉ］及び［II］に記載のハイブリッドシステムとしては、例えば、ハイブリッド自動車、ハイブリッド二輪車、ハイブリッド鉄道、ハイブリッド船舶等が挙げられる。
上記［Ｉ］の内燃機関は、上述の本発明の一態様の潤滑油組成物を充填したものであり、電動機である電気モーターと共に、ハイブリッドシステムに搭載される装置である。
また、上記［II］の内燃機関の潤滑方法は、上述の本発明の一態様の潤滑油組成物をハイブリッドシステムに搭載される内燃機関に適用することを規定したものであるが、当該潤滑油組成物は、電動機である電気モーターにも適用してもよい。 The hybrid system described in [I] and [II] above is a mechanism having an internal combustion engine and an electric motor as power sources.
Examples of the hybrid system described in [I] and [II] above include a hybrid automobile, a hybrid two-wheeled vehicle, a hybrid railway, a hybrid ship, and the like.
The internal combustion engine of [I] above is filled with the lubricating oil composition of one embodiment of the present invention described above, and is a device that is installed in a hybrid system together with an electric motor.
Further, the method for lubricating an internal combustion engine in [II] above specifies that the lubricating oil composition of one embodiment of the present invention described above is applied to an internal combustion engine installed in a hybrid system. The composition may also be applied to electric motors.
以上のとおり、本発明は、以下の態様を開示する。
［１］基油（Ａ）、ヒンダードアミン系化合物（Ｂ）、及び、少なくとも１つの第１級アルキル基を有する有機ジチオリン酸亜鉛（Ｃ）を含有する、潤滑油組成物。
［２］成分（Ｃ）が、下記一般式（ｃ－１）で表される化合物（Ｃ１）を含む、上記［１］に記載の潤滑油組成物。
〔上記式中、Ｒｃ１～Ｒｃ４は、それぞれ独立して、第１級アルキル基である。〕
［３］前記第１級アルキル基の炭素数が１～７である、上記［２］に記載の潤滑油組成物。
［４］成分（Ｃ）の含有量が、前記潤滑油組成物の全量基準で、０．０１～７．０質量％である、上記［１］～［３］のいずれか一項に記載の潤滑油組成物。
［５］成分（Ｂ）の含有量が、前記潤滑油組成物の全量基準で、０．６０～１０．０質量％である、上記［１］～［４］のいずれか一項に記載の潤滑油組成物。
［６］成分（Ｂ）と成分（Ｃ）との含有量比［（Ｂ）／（Ｃ）］が、質量比で、０．５～１０．０である、上記［１］～［５］のいずれか一項に記載の潤滑油組成物。
［７］成分（Ｂ）が、下記一般式（ｂ－１）で表される化合物（Ｂ１）及び下記一般式（ｂ－２）で表される化合物（Ｂ２）から選ばれる１種以上を含む、上記［１］～［６］のいずれか一項に記載の潤滑油組成物。
〔上記式中、Ｒｂ１は、それぞれ独立に、水素原子又は炭素数１～１０のアルキル基、又は炭素数１～１０のアルコキシ基である。
Ｒｂ２は、水素原子、炭素数１～２０のアルキル基、環形成炭素数３～１８のシクロアルキル基、環形成炭素数６～１８のアリール基、水酸基、アミノ基、又は－Ｏ－ＣＯ－Ｒｂ３で表される基（Ｒｂ３は、水素原子又は炭素数１～２０の炭化水素基）である。
Ｚは、炭素数１～２０のアルキレン基、環形成炭素数３～１８のシクロアルキレン基、環形成炭素数６～１８のアリーレン基、酸素原子、硫黄原子、又は－Ｏ－ＣＯ－（ＣＨ２）ｎ－ＣＯ－Ｏ－で表される基（ｎは１～２０の整数）である。〕
［８］さらに、ジチオカルバミン酸モリブデン（Ｄ）を含有する、上記［１］～［７］のいずれか一項に記載の潤滑油組成物。
［９］さらに、成分（Ｂ）には該当しない酸化防止剤（Ｅ）を含み、
成分（Ｅ）が、成分（Ｂ）には該当しないアミン系酸化防止剤（Ｅ１）及びフェノール系酸化防止剤（Ｅ２）から選ばれる１種以上を含む、上記［１］～［８］のいずれか一項に記載の潤滑油組成物。
［１０］さらに、イミド化合物（Ｆ）を含み、
成分（Ｆ）が、非ホウ素変性アルケニルコハク酸イミド（Ｆ１）及びホウ素変性アルケニルコハク酸イミド（Ｆ２）から選ばれる１種以上を含む、上記［１］～［９］のいずれかに記載の潤滑油組成物。
［１１］成分（Ｆ）が、成分（Ｆ１）及び成分（Ｆ２）含み、
成分（Ｆ１）と成分（Ｆ２）との含有量比［（Ｆ１）／（Ｆ２）］が、質量比で、５．００未満である、上記［１０］に記載の潤滑油組成物。
［１２］ハイブリッドシステムの内燃機関の潤滑に用いられる、上記［１］～［１１］のいずれか一項に記載の潤滑油組成物。
［１３］上記［１］～［１２］のいずれか一項に記載の潤滑油組成物を充填した、ハイブリッドシステムに搭載される、内燃機関。
［１４］上記［１］～［１２］のいずれか一項に記載の潤滑油組成物をハイブリッドシステムに搭載される内燃機関に適用した、内燃機関の潤滑方法。 As described above, the present invention discloses the following aspects.
[1] A lubricating oil composition containing a base oil (A), a hindered amine compound (B), and an organic zinc dithiophosphate (C) having at least one primary alkyl group.
[2] The lubricating oil composition according to [1] above, wherein component (C) contains a compound (C1) represented by the following general formula (c-1).
[In the above formula, R c1 to R c4 are each independently a primary alkyl group. ]
[3] The lubricating oil composition according to [2] above, wherein the primary alkyl group has 1 to 7 carbon atoms.
[4] The content of component (C) is 0.01 to 7.0% by mass based on the total amount of the lubricating oil composition, according to any one of [1] to [3] above. Lubricating oil composition.
[5] The content of component (B) is 0.60 to 10.0% by mass based on the total amount of the lubricating oil composition, according to any one of [1] to [4] above. Lubricating oil composition.
[6] The above [1] to [5], wherein the content ratio [(B)/(C)] of component (B) and component (C) is 0.5 to 10.0 in mass ratio. The lubricating oil composition according to any one of the above.
[7] Component (B) contains one or more selected from the compound (B1) represented by the following general formula (b-1) and the compound (B2) represented by the following general formula (b-2) , the lubricating oil composition according to any one of [1] to [6] above.
[In the above formula, R b1 is each independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or an alkoxy group having 1 to 10 carbon atoms.
R b2 is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 18 ring carbon atoms, an aryl group having 6 to 18 ring carbon atoms, a hydroxyl group, an amino group, or -O-CO- A group represented by R b3 (R b3 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms).
Z is an alkylene group having 1 to 20 carbon atoms, a cycloalkylene group having 3 to 18 ring carbon atoms, an arylene group having 6 to 18 ring carbon atoms, an oxygen atom, a sulfur atom, or -O-CO-(CH 2 ) n is a group represented by -CO-O- (n is an integer from 1 to 20). ]
[8] The lubricating oil composition according to any one of [1] to [7] above, further containing molybdenum dithiocarbamate (D).
[9] Furthermore, it contains an antioxidant (E) that does not fall under component (B),
Any of the above [1] to [8], wherein component (E) contains one or more selected from amine antioxidants (E1) and phenolic antioxidants (E2), which do not fall under component (B). The lubricating oil composition according to item 1.
[10] Furthermore, it contains an imide compound (F),
The lubricant according to any one of [1] to [9] above, wherein component (F) contains one or more selected from non-boron modified alkenyl succinimide (F1) and boron modified alkenyl succinimide (F2). oil composition.
[11] Component (F) contains component (F1) and component (F2),
The lubricating oil composition according to [10] above, wherein the content ratio [(F1)/(F2)] of component (F1) and component (F2) is less than 5.00 in mass ratio.
[12] The lubricating oil composition according to any one of [1] to [11] above, which is used for lubricating an internal combustion engine of a hybrid system.
[13] An internal combustion engine installed in a hybrid system, filled with the lubricating oil composition according to any one of [1] to [12] above.
[14] A method for lubricating an internal combustion engine, in which the lubricating oil composition according to any one of [1] to [12] above is applied to an internal combustion engine installed in a hybrid system.
［１］基油（Ａ）、ヒンダードアミン系化合物（Ｂ）、及び、少なくとも１つの第１級アルキル基を有する有機ジチオリン酸亜鉛（Ｃ）を含有する、潤滑油組成物。
［２］成分（Ｃ）が、下記一般式（ｃ－１）で表される化合物（Ｃ１）を含む、上記［１］に記載の潤滑油組成物。
［３］前記第１級アルキル基の炭素数が１～７である、上記［２］に記載の潤滑油組成物。
［４］成分（Ｃ）の含有量が、前記潤滑油組成物の全量基準で、０．０１～７．０質量％である、上記［１］～［３］のいずれか一項に記載の潤滑油組成物。
［５］成分（Ｂ）の含有量が、前記潤滑油組成物の全量基準で、０．６０～１０．０質量％である、上記［１］～［４］のいずれか一項に記載の潤滑油組成物。
［６］成分（Ｂ）と成分（Ｃ）との含有量比［（Ｂ）／（Ｃ）］が、質量比で、０．５～１０．０である、上記［１］～［５］のいずれか一項に記載の潤滑油組成物。
［７］成分（Ｂ）が、下記一般式（ｂ－１）で表される化合物（Ｂ１）及び下記一般式（ｂ－２）で表される化合物（Ｂ２）から選ばれる１種以上を含む、上記［１］～［６］のいずれか一項に記載の潤滑油組成物。
Ｒｂ２は、水素原子、炭素数１～２０のアルキル基、環形成炭素数３～１８のシクロアルキル基、環形成炭素数６～１８のアリール基、水酸基、アミノ基、又は－Ｏ－ＣＯ－Ｒｂ３で表される基（Ｒｂ３は、水素原子又は炭素数１～２０の炭化水素基）である。
Ｚは、炭素数１～２０のアルキレン基、環形成炭素数３～１８のシクロアルキレン基、環形成炭素数６～１８のアリーレン基、酸素原子、硫黄原子、又は－Ｏ－ＣＯ－（ＣＨ２）ｎ－ＣＯ－Ｏ－で表される基（ｎは１～２０の整数）である。〕
［８］さらに、ジチオカルバミン酸モリブデン（Ｄ）を含有する、上記［１］～［７］のいずれか一項に記載の潤滑油組成物。
［９］さらに、成分（Ｂ）には該当しない酸化防止剤（Ｅ）を含み、
成分（Ｅ）が、成分（Ｂ）には該当しないアミン系酸化防止剤（Ｅ１）及びフェノール系酸化防止剤（Ｅ２）から選ばれる１種以上を含む、上記［１］～［８］のいずれか一項に記載の潤滑油組成物。
［１０］さらに、イミド化合物（Ｆ）を含み、
成分（Ｆ）が、非ホウ素変性アルケニルコハク酸イミド（Ｆ１）及びホウ素変性アルケニルコハク酸イミド（Ｆ２）から選ばれる１種以上を含む、上記［１］～［９］のいずれかに記載の潤滑油組成物。
［１１］成分（Ｆ）が、成分（Ｆ１）及び成分（Ｆ２）含み、
成分（Ｆ１）と成分（Ｆ２）との含有量比［（Ｆ１）／（Ｆ２）］が、質量比で、５．００未満である、上記［１０］に記載の潤滑油組成物。
［１２］ハイブリッドシステムの内燃機関の潤滑に用いられる、上記［１］～［１１］のいずれか一項に記載の潤滑油組成物。
［１３］上記［１］～［１２］のいずれか一項に記載の潤滑油組成物を充填した、ハイブリッドシステムに搭載される、内燃機関。
［１４］上記［１］～［１２］のいずれか一項に記載の潤滑油組成物をハイブリッドシステムに搭載される内燃機関に適用した、内燃機関の潤滑方法。 As described above, the present invention discloses the following aspects.
[1] A lubricating oil composition containing a base oil (A), a hindered amine compound (B), and an organic zinc dithiophosphate (C) having at least one primary alkyl group.
[2] The lubricating oil composition according to [1] above, wherein component (C) contains a compound (C1) represented by the following general formula (c-1).
[3] The lubricating oil composition according to [2] above, wherein the primary alkyl group has 1 to 7 carbon atoms.
[4] The content of component (C) is 0.01 to 7.0% by mass based on the total amount of the lubricating oil composition, according to any one of [1] to [3] above. Lubricating oil composition.
[5] The content of component (B) is 0.60 to 10.0% by mass based on the total amount of the lubricating oil composition, according to any one of [1] to [4] above. Lubricating oil composition.
[6] The above [1] to [5], wherein the content ratio [(B)/(C)] of component (B) and component (C) is 0.5 to 10.0 in mass ratio. The lubricating oil composition according to any one of the above.
[7] Component (B) contains one or more selected from the compound (B1) represented by the following general formula (b-1) and the compound (B2) represented by the following general formula (b-2) , the lubricating oil composition according to any one of [1] to [6] above.
R b2 is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 18 ring carbon atoms, an aryl group having 6 to 18 ring carbon atoms, a hydroxyl group, an amino group, or -O-CO- A group represented by R b3 (R b3 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms).
Z is an alkylene group having 1 to 20 carbon atoms, a cycloalkylene group having 3 to 18 ring carbon atoms, an arylene group having 6 to 18 ring carbon atoms, an oxygen atom, a sulfur atom, or -O-CO-(CH 2 ) n is a group represented by -CO-O- (n is an integer from 1 to 20). ]
[8] The lubricating oil composition according to any one of [1] to [7] above, further containing molybdenum dithiocarbamate (D).
[9] Furthermore, it contains an antioxidant (E) that does not fall under component (B),
Any of the above [1] to [8], wherein component (E) contains one or more selected from amine antioxidants (E1) and phenolic antioxidants (E2), which do not fall under component (B). The lubricating oil composition according to item 1.
[10] Furthermore, it contains an imide compound (F),
The lubricant according to any one of [1] to [9] above, wherein component (F) contains one or more selected from non-boron modified alkenyl succinimide (F1) and boron modified alkenyl succinimide (F2). oil composition.
[11] Component (F) contains component (F1) and component (F2),
The lubricating oil composition according to [10] above, wherein the content ratio [(F1)/(F2)] of component (F1) and component (F2) is less than 5.00 in mass ratio.
[12] The lubricating oil composition according to any one of [1] to [11] above, which is used for lubricating an internal combustion engine of a hybrid system.
[13] An internal combustion engine installed in a hybrid system, filled with the lubricating oil composition according to any one of [1] to [12] above.
[14] A method for lubricating an internal combustion engine, in which the lubricating oil composition according to any one of [1] to [12] above is applied to an internal combustion engine installed in a hybrid system.
次に、本発明を実施例により更に詳細に説明するが、本発明はこれらの例によって何ら限定されるものではない。なお、各種物性の測定法は、下記のとおりである。
Next, the present invention will be explained in more detail with reference to examples, but the present invention is not limited to these examples in any way. The methods for measuring various physical properties are as follows.
（１）カルシウム原子（Ｃａ）、亜鉛原子（Ｚｎ）、モリブデン原子（Ｍｏ）、リン原子（Ｐ）、及びホウ素原子（Ｂ）の含有量
ＪＰＩ－５Ｓ－３８－９２に準拠して測定した。
（２）窒素原子（Ｎ）の含有量
ＪＩＳ Ｋ２６０９：１９９８に準拠して測定した。 (1) Content of calcium atoms (Ca), zinc atoms (Zn), molybdenum atoms (Mo), phosphorus atoms (P), and boron atoms (B) Measured in accordance with JPI-5S-38-92.
(2) Content of nitrogen atoms (N) Measured in accordance with JIS K2609:1998.
ＪＰＩ－５Ｓ－３８－９２に準拠して測定した。
（２）窒素原子（Ｎ）の含有量
ＪＩＳ Ｋ２６０９：１９９８に準拠して測定した。 (1) Content of calcium atoms (Ca), zinc atoms (Zn), molybdenum atoms (Mo), phosphorus atoms (P), and boron atoms (B) Measured in accordance with JPI-5S-38-92.
(2) Content of nitrogen atoms (N) Measured in accordance with JIS K2609:1998.
（３）重量平均分子量（Ｍｗ）
ゲル浸透クロマトグラフ装置（アジレント社製、「１２６０型ＨＰＬＣ」）を用いて、下記の条件下で測定し、標準ポリスチレン換算にて測定した値を用いた。
（測定条件）
・カラム：「Ｓｈｏｄｅｘ ＬＦ４０４」を２本、順次連結したもの。
・カラム温度：３５℃
・展開溶媒：クロロホルム
・流速：０．３ｍＬ／ｍｉｎ (3) Weight average molecular weight (Mw)
Measurements were made using a gel permeation chromatography device (manufactured by Agilent, "1260 HPLC") under the following conditions, and the values measured in terms of standard polystyrene were used.
(Measurement condition)
・Column: Two “Shodex LF404” connected in sequence.
・Column temperature: 35℃
・Developing solvent: Chloroform ・Flow rate: 0.3 mL/min
ゲル浸透クロマトグラフ装置（アジレント社製、「１２６０型ＨＰＬＣ」）を用いて、下記の条件下で測定し、標準ポリスチレン換算にて測定した値を用いた。
（測定条件）
・カラム：「Ｓｈｏｄｅｘ ＬＦ４０４」を２本、順次連結したもの。
・カラム温度：３５℃
・展開溶媒：クロロホルム
・流速：０．３ｍＬ／ｍｉｎ (3) Weight average molecular weight (Mw)
Measurements were made using a gel permeation chromatography device (manufactured by Agilent, "1260 HPLC") under the following conditions, and the values measured in terms of standard polystyrene were used.
(Measurement condition)
・Column: Two “Shodex LF404” connected in sequence.
・Column temperature: 35℃
・Developing solvent: Chloroform ・Flow rate: 0.3 mL/min
実施例１～７、比較例１～２
基油及び各種添加剤を、表１に示す配合量にて添加して混合し、潤滑油組成物をそれぞれ調製した。
なお、当該潤滑油組成物の調製に使用した、各成分の詳細は以下のとおりである。 Examples 1-7, Comparative Examples 1-2
The base oil and various additives were added and mixed in the amounts shown in Table 1 to prepare lubricating oil compositions.
The details of each component used in the preparation of the lubricating oil composition are as follows.
基油及び各種添加剤を、表１に示す配合量にて添加して混合し、潤滑油組成物をそれぞれ調製した。
なお、当該潤滑油組成物の調製に使用した、各成分の詳細は以下のとおりである。 Examples 1-7, Comparative Examples 1-2
The base oil and various additives were added and mixed in the amounts shown in Table 1 to prepare lubricating oil compositions.
The details of each component used in the preparation of the lubricating oil composition are as follows.
＜成分（Ａ）：基油＞
・「１００Ｎ鉱油」：ＡＰＩ基油カテゴリーのグループIIIに分類されるパラフィン系鉱油、４０℃動粘度＝２０ｍｍ２／ｓ、粘度指数＝１２２、成分（Ａ）に該当。
＜成分（Ｂ）：ヒンダードアミン系化合物＞
・「ヒンダードアミン系化合物」：ドデカン酸２，２，６，６－テトラメチルピぺリジン－４－イル、前記一般式（ｂ－１１）中、Ｒｂ１＝水素原子、Ｒｂ３＝－Ｃ１１Ｈ２３である化合物、窒素原子含有量＝４．１３質量％、成分（Ｂ１１）に該当。。
＜成分（Ｃ）：ＺｎＤＴＰ＞
・「第１級ジアルキルジチオリン酸亜鉛」：前記一般式（ｃ－１）中のＲｃ１～Ｒｃ４が、すべて炭素数６の第１級アルキル基である化合物、リン原子含有量＝７．５質量％、亜鉛原子含有量＝８．５質量％、成分（Ｃ）に該当。
＜成分（Ｃ）には該当しないＺｎＤＴＰ＞
・「第２級ジアルキルジチオリン酸亜鉛」：前記一般式（ｃ－１）中のＲｃ１～Ｒｃ４が、すべて第２級アルキル基である化合物。リン原子含有量＝７．１質量％、亜鉛原子含有量＝８．２質量％。
＜成分（Ｄ）：ジチオカルバミン酸モリブデン＞
・「ジチオカルバミン酸モリブデン（１）」：前記一般式（ｄ－２）中、Ｒｄ１～Ｒｄ４が、すべて炭素数８又は１３のアルキル基である化合物の混合物（炭素数８のアルキル基（α）／炭素数１３のアルキル基（β）＝１／１（モル比））、成分（Ｄ２）に該当。
・「ジチオカルバミン酸モリブデン（２）」：前記一般式（ｄ－２）中、Ｒｄ１～Ｒｄ４が、すべて炭素数１４のアルキル基である化合物、成分（Ｄ２）に該当。
＜成分（Ｅ）：成分（Ｂ）には該当しない酸化防止剤＞
・「成分（Ｂ）には該当しないアミン系酸化防止剤」：ジノニルジフェニルアミン、窒素原子含有量＝３．６質量％、成分（Ｅ１）に該当。
・「フェノール系酸化防止剤」：ベンゼンプロパン酸－３，５－ビス（１，１－ジメチルエチル）－４－ヒドロキシアルキルエステル、成分（Ｅ２）に該当。
＜成分（Ｆ）：イミド系化合物＞
・「非ホウ素変性アルケニルコハク酸イミド」：ポリブテニルコハク酸ビスイミド、窒素原子（Ｎ）の含有量＝１．０質量％、成分（Ｆ１）に該当。
・「ホウ素変性アルケニルコハク酸イミド」：ポリブテニルコハク酸モノイミドのホウ素変性物、ホウ素原子（Ｂ）の含有量＝１．３質量％、窒素原子（Ｎ）の含有量＝１．２質量％、Ｂ／Ｎ＝１．０８、成分（Ｆ２）に該当。
＜金属系清浄剤＞
・「中性Ｃａサリチレート」：塩基価＝６４ｍｇＫＯＨ／ｇのカルシウムサリチレート、Ｃａ含有量＝２．３質量％。
＜他の添加剤＞
・「添加剤混合物」：粘度指数向上剤（Ｍｗ＝４０万）、流動点降下剤（Ｍｗ＝７万）、グリセリンモノオレート、及びシリコーン系消泡剤からなる添加剤混合物。 <Component (A): Base oil>
- "100N mineral oil": Paraffinic mineral oil classified into Group III of API base oil category, kinematic viscosity at 40°C = 20 mm 2 /s, viscosity index = 122, corresponds to component (A).
<Component (B): Hindered amine compound>
・"Hindered amine compound": 2,2,6,6-tetramethylpiperidin-4-yl dodecanoate, in the general formula (b-11), R b1 = hydrogen atom, R b3 = -C 11 H 23 A certain compound, nitrogen atom content = 4.13% by mass, corresponds to component (B11). .
<Component (C): ZnDTP>
・“Zinc primary dialkyldithiophosphate”: a compound in which R c1 to R c4 in the general formula (c-1) are all primary alkyl groups having 6 carbon atoms, phosphorus atom content = 7.5 Mass%, zinc atom content = 8.5% by mass, corresponding to component (C).
<ZnDTP not applicable to component (C)>
- "Zinc dialkyldithiophosphate": A compound in which R c1 to R c4 in the general formula (c-1) are all secondary alkyl groups. Phosphorus atom content = 7.1% by mass, zinc atomic content = 8.2% by mass.
<Component (D): Molybdenum dithiocarbamate>
・“Molybdenum dithiocarbamate (1)”: A mixture of compounds in which R d1 to R d4 in the general formula (d-2) are all alkyl groups having 8 or 13 carbon atoms (alkyl group having 8 carbon atoms (α )/alkyl group having 13 carbon atoms (β) = 1/1 (molar ratio)), corresponding to component (D2).
- "Molybdenum dithiocarbamate (2)": A compound in which R d1 to R d4 in the general formula (d-2) are all alkyl groups having 14 carbon atoms, corresponding to component (D2).
<Component (E): Antioxidant not applicable to component (B)>
- "Amine antioxidant not applicable to component (B)": dinonyl diphenylamine, nitrogen atom content = 3.6% by mass, applicable to component (E1).
・“Phenolic antioxidant”: Benzenepropanoic acid-3,5-bis(1,1-dimethylethyl)-4-hydroxyalkyl ester, applicable to component (E2).
<Component (F): Imide compound>
- "Non-boron modified alkenyl succinimide": polybutenyl succinic acid bisimide, nitrogen atom (N) content = 1.0% by mass, corresponding to component (F1).
・"Boron modified alkenyl succinimide": Boron modified product of polybutenyl succinic acid monoimide, boron atom (B) content = 1.3 mass %, nitrogen atom (N) content = 1.2 mass % , B/N=1.08, corresponding to component (F2).
<Metallic cleaner>
- "Neutral Ca salicylate": calcium salicylate with base number = 64 mgKOH/g, Ca content = 2.3% by mass.
<Other additives>
- "Additive mixture": an additive mixture consisting of a viscosity index improver (Mw = 400,000), a pour point depressant (Mw = 70,000), glycerin monooleate, and a silicone antifoaming agent.
・「１００Ｎ鉱油」：ＡＰＩ基油カテゴリーのグループIIIに分類されるパラフィン系鉱油、４０℃動粘度＝２０ｍｍ２／ｓ、粘度指数＝１２２、成分（Ａ）に該当。
＜成分（Ｂ）：ヒンダードアミン系化合物＞
・「ヒンダードアミン系化合物」：ドデカン酸２，２，６，６－テトラメチルピぺリジン－４－イル、前記一般式（ｂ－１１）中、Ｒｂ１＝水素原子、Ｒｂ３＝－Ｃ１１Ｈ２３である化合物、窒素原子含有量＝４．１３質量％、成分（Ｂ１１）に該当。。
＜成分（Ｃ）：ＺｎＤＴＰ＞
・「第１級ジアルキルジチオリン酸亜鉛」：前記一般式（ｃ－１）中のＲｃ１～Ｒｃ４が、すべて炭素数６の第１級アルキル基である化合物、リン原子含有量＝７．５質量％、亜鉛原子含有量＝８．５質量％、成分（Ｃ）に該当。
＜成分（Ｃ）には該当しないＺｎＤＴＰ＞
・「第２級ジアルキルジチオリン酸亜鉛」：前記一般式（ｃ－１）中のＲｃ１～Ｒｃ４が、すべて第２級アルキル基である化合物。リン原子含有量＝７．１質量％、亜鉛原子含有量＝８．２質量％。
＜成分（Ｄ）：ジチオカルバミン酸モリブデン＞
・「ジチオカルバミン酸モリブデン（１）」：前記一般式（ｄ－２）中、Ｒｄ１～Ｒｄ４が、すべて炭素数８又は１３のアルキル基である化合物の混合物（炭素数８のアルキル基（α）／炭素数１３のアルキル基（β）＝１／１（モル比））、成分（Ｄ２）に該当。
・「ジチオカルバミン酸モリブデン（２）」：前記一般式（ｄ－２）中、Ｒｄ１～Ｒｄ４が、すべて炭素数１４のアルキル基である化合物、成分（Ｄ２）に該当。
＜成分（Ｅ）：成分（Ｂ）には該当しない酸化防止剤＞
・「成分（Ｂ）には該当しないアミン系酸化防止剤」：ジノニルジフェニルアミン、窒素原子含有量＝３．６質量％、成分（Ｅ１）に該当。
・「フェノール系酸化防止剤」：ベンゼンプロパン酸－３，５－ビス（１，１－ジメチルエチル）－４－ヒドロキシアルキルエステル、成分（Ｅ２）に該当。
＜成分（Ｆ）：イミド系化合物＞
・「非ホウ素変性アルケニルコハク酸イミド」：ポリブテニルコハク酸ビスイミド、窒素原子（Ｎ）の含有量＝１．０質量％、成分（Ｆ１）に該当。
・「ホウ素変性アルケニルコハク酸イミド」：ポリブテニルコハク酸モノイミドのホウ素変性物、ホウ素原子（Ｂ）の含有量＝１．３質量％、窒素原子（Ｎ）の含有量＝１．２質量％、Ｂ／Ｎ＝１．０８、成分（Ｆ２）に該当。
＜金属系清浄剤＞
・「中性Ｃａサリチレート」：塩基価＝６４ｍｇＫＯＨ／ｇのカルシウムサリチレート、Ｃａ含有量＝２．３質量％。
＜他の添加剤＞
・「添加剤混合物」：粘度指数向上剤（Ｍｗ＝４０万）、流動点降下剤（Ｍｗ＝７万）、グリセリンモノオレート、及びシリコーン系消泡剤からなる添加剤混合物。 <Component (A): Base oil>
- "100N mineral oil": Paraffinic mineral oil classified into Group III of API base oil category, kinematic viscosity at 40°C = 20 mm 2 /s, viscosity index = 122, corresponds to component (A).
<Component (B): Hindered amine compound>
・"Hindered amine compound": 2,2,6,6-tetramethylpiperidin-4-yl dodecanoate, in the general formula (b-11), R b1 = hydrogen atom, R b3 = -C 11 H 23 A certain compound, nitrogen atom content = 4.13% by mass, corresponds to component (B11). .
<Component (C): ZnDTP>
・“Zinc primary dialkyldithiophosphate”: a compound in which R c1 to R c4 in the general formula (c-1) are all primary alkyl groups having 6 carbon atoms, phosphorus atom content = 7.5 Mass%, zinc atom content = 8.5% by mass, corresponding to component (C).
<ZnDTP not applicable to component (C)>
- "Zinc dialkyldithiophosphate": A compound in which R c1 to R c4 in the general formula (c-1) are all secondary alkyl groups. Phosphorus atom content = 7.1% by mass, zinc atomic content = 8.2% by mass.
<Component (D): Molybdenum dithiocarbamate>
・“Molybdenum dithiocarbamate (1)”: A mixture of compounds in which R d1 to R d4 in the general formula (d-2) are all alkyl groups having 8 or 13 carbon atoms (alkyl group having 8 carbon atoms (α )/alkyl group having 13 carbon atoms (β) = 1/1 (molar ratio)), corresponding to component (D2).
- "Molybdenum dithiocarbamate (2)": A compound in which R d1 to R d4 in the general formula (d-2) are all alkyl groups having 14 carbon atoms, corresponding to component (D2).
<Component (E): Antioxidant not applicable to component (B)>
- "Amine antioxidant not applicable to component (B)": dinonyl diphenylamine, nitrogen atom content = 3.6% by mass, applicable to component (E1).
・“Phenolic antioxidant”: Benzenepropanoic acid-3,5-bis(1,1-dimethylethyl)-4-hydroxyalkyl ester, applicable to component (E2).
<Component (F): Imide compound>
- "Non-boron modified alkenyl succinimide": polybutenyl succinic acid bisimide, nitrogen atom (N) content = 1.0% by mass, corresponding to component (F1).
・"Boron modified alkenyl succinimide": Boron modified product of polybutenyl succinic acid monoimide, boron atom (B) content = 1.3 mass %, nitrogen atom (N) content = 1.2 mass % , B/N=1.08, corresponding to component (F2).
<Metallic cleaner>
- "Neutral Ca salicylate": calcium salicylate with base number = 64 mgKOH/g, Ca content = 2.3% by mass.
<Other additives>
- "Additive mixture": an additive mixture consisting of a viscosity index improver (Mw = 400,000), a pour point depressant (Mw = 70,000), glycerin monooleate, and a silicone antifoaming agent.
調製した潤滑油組成物について、各原子の含有量を測定すると共に、以下の評価試験を行った。これらの結果を表１に示す。
Regarding the prepared lubricating oil composition, the content of each atom was measured and the following evaluation tests were conducted. These results are shown in Table 1.
（１）耐銅溶出性試験
ガラス製試験管（径４０ｍｍ×長さ３００ｍｍ）に、試験油として、調製した潤滑油組成物を１００ｍＬ加え、さらに研磨した銅板（２５ｍｍ×２５ｍｍ×１ｍｍ）を入れて、試験油に浸漬させた。銅板を試験油に浸漬させた状態で、油温１４０℃で、供給ガス全量に対して２０００体積ｐｐｍの量のＮＯｘガスを１２Ｌ／ｈの流量で吹き込みながら６２時間静置した後、ＪＰＩ－５Ｓ－３８－２００３に準拠して、試験油中の銅の溶出量（単位：質量ｐｐｍ）を測定した。銅の溶出量が少ないほど、耐銅溶出性に優れた潤滑油組成物であるといえる。本実施例においては、銅の溶出量が２５０質量ｐｐｍ未満である場合、耐銅溶出性が良好な潤滑油組成物であると判断した。 (1) Copper elution resistance test Add 100 mL of the prepared lubricating oil composition as a test oil to a glass test tube (diameter 40 mm x length 300 mm), and then add a polished copper plate (25 mm x 25 mm x 1 mm). , immersed in test oil. After leaving the copper plate immersed in the test oil at an oil temperature of 140°C for 62 hours while blowing 2000 volume ppm of NOx gas into the total amount of supplied gas at a flow rate of 12 L/h, the JPI-5S was tested. -38-2003, the amount of copper eluted in the test oil (unit: mass ppm) was measured. It can be said that the smaller the amount of copper eluted, the more excellent the lubricating oil composition is in copper elution resistance. In this example, when the amount of copper elution was less than 250 mass ppm, it was determined that the lubricating oil composition had good copper elution resistance.
ガラス製試験管（径４０ｍｍ×長さ３００ｍｍ）に、試験油として、調製した潤滑油組成物を１００ｍＬ加え、さらに研磨した銅板（２５ｍｍ×２５ｍｍ×１ｍｍ）を入れて、試験油に浸漬させた。銅板を試験油に浸漬させた状態で、油温１４０℃で、供給ガス全量に対して２０００体積ｐｐｍの量のＮＯｘガスを１２Ｌ／ｈの流量で吹き込みながら６２時間静置した後、ＪＰＩ－５Ｓ－３８－２００３に準拠して、試験油中の銅の溶出量（単位：質量ｐｐｍ）を測定した。銅の溶出量が少ないほど、耐銅溶出性に優れた潤滑油組成物であるといえる。本実施例においては、銅の溶出量が２５０質量ｐｐｍ未満である場合、耐銅溶出性が良好な潤滑油組成物であると判断した。 (1) Copper elution resistance test Add 100 mL of the prepared lubricating oil composition as a test oil to a glass test tube (diameter 40 mm x length 300 mm), and then add a polished copper plate (25 mm x 25 mm x 1 mm). , immersed in test oil. After leaving the copper plate immersed in the test oil at an oil temperature of 140°C for 62 hours while blowing 2000 volume ppm of NOx gas into the total amount of supplied gas at a flow rate of 12 L/h, the JPI-5S was tested. -38-2003, the amount of copper eluted in the test oil (unit: mass ppm) was measured. It can be said that the smaller the amount of copper eluted, the more excellent the lubricating oil composition is in copper elution resistance. In this example, when the amount of copper elution was less than 250 mass ppm, it was determined that the lubricating oil composition had good copper elution resistance.
（２）ホットチューブ試験
調製した潤滑油組成物を用いて、下記試験条件にて、ＮＯｘガス吹き込みながら純水を添加したＩＳＯＴ試験を１６８時間行い、劣化油を調整した。
＜試験条件＞
・試験機：吉田科学器械株式会社製、ＩＳＯＴ ＴＥＳＴＥＲ
・試験容器内容積：５００ｍＬ
・潤滑油組成物の使用量：３００ｍＬ
・ＮＯｘガス量：供給ガス全量に対して２，０００体積ｐｐｍ
・純水添加量：２４時間毎に潤滑油組成物の全量に対して５体積％添加
・攪拌速度：８００ｒ／ｍｉｎ
・試験温度（サイクル）：（１）６０℃で４時間、（２）９５℃で２時間、（３）１２０℃で１２時間、及び（４）６０℃で６時間の（１）～（４）を１サイクルとして、当該サイクルを繰り返した。
上記のとおり調整した前記劣化油を用いて、試験温度２４０℃で、ＪＰＩ－５Ｓ－５５－９９に準拠したホットチューブ試験を行った。試験後のガラス管の変色の程度を、０点（黒色）～１０点（無色）（メリット評点）において０．５刻みでの２１段階の評点にて評価した。評点が高いほど、高温清浄性に優れた潤滑油組成物であるといえる。本実施例においては、評点が７．０以上である場合、高温清浄性が良好な潤滑油組成物であると判断した。 (2) Hot Tube Test Using the prepared lubricating oil composition, an ISOT test was conducted for 168 hours under the following test conditions in which pure water was added while blowing NOx gas, and the degraded oil was adjusted.
<Test conditions>
・Testing machine: ISOT TESTER manufactured by Yoshida Scientific Instruments Co., Ltd.
・Test container internal volume: 500mL
・Amount of lubricating oil composition used: 300mL
・NOx gas amount: 2,000 volume ppm based on the total amount of gas supplied
- Amount of pure water added: 5% by volume added to the total amount of lubricating oil composition every 24 hours - Stirring speed: 800 r/min
・Test temperature (cycle): (1) 60°C for 4 hours, (2) 95°C for 2 hours, (3) 120°C for 12 hours, and (4) 60°C for 6 hours (1) to (4) ) as one cycle, and the cycle was repeated.
A hot tube test in accordance with JPI-5S-55-99 was conducted at a test temperature of 240° C. using the deteriorated oil prepared as described above. The degree of discoloration of the glass tube after the test was evaluated on a 21-point scale ranging from 0 (black) to 10 (colorless) (merit score) in 0.5 increments. It can be said that the higher the rating, the more excellent the lubricating oil composition is in high-temperature cleanliness. In this example, when the rating was 7.0 or higher, it was determined that the lubricating oil composition had good high-temperature detergency.
調製した潤滑油組成物を用いて、下記試験条件にて、ＮＯｘガス吹き込みながら純水を添加したＩＳＯＴ試験を１６８時間行い、劣化油を調整した。
＜試験条件＞
・試験機：吉田科学器械株式会社製、ＩＳＯＴ ＴＥＳＴＥＲ
・試験容器内容積：５００ｍＬ
・潤滑油組成物の使用量：３００ｍＬ
・ＮＯｘガス量：供給ガス全量に対して２，０００体積ｐｐｍ
・純水添加量：２４時間毎に潤滑油組成物の全量に対して５体積％添加
・攪拌速度：８００ｒ／ｍｉｎ
・試験温度（サイクル）：（１）６０℃で４時間、（２）９５℃で２時間、（３）１２０℃で１２時間、及び（４）６０℃で６時間の（１）～（４）を１サイクルとして、当該サイクルを繰り返した。
上記のとおり調整した前記劣化油を用いて、試験温度２４０℃で、ＪＰＩ－５Ｓ－５５－９９に準拠したホットチューブ試験を行った。試験後のガラス管の変色の程度を、０点（黒色）～１０点（無色）（メリット評点）において０．５刻みでの２１段階の評点にて評価した。評点が高いほど、高温清浄性に優れた潤滑油組成物であるといえる。本実施例においては、評点が７．０以上である場合、高温清浄性が良好な潤滑油組成物であると判断した。 (2) Hot Tube Test Using the prepared lubricating oil composition, an ISOT test was conducted for 168 hours under the following test conditions in which pure water was added while blowing NOx gas, and the degraded oil was adjusted.
<Test conditions>
・Testing machine: ISOT TESTER manufactured by Yoshida Scientific Instruments Co., Ltd.
・Test container internal volume: 500mL
・Amount of lubricating oil composition used: 300mL
・NOx gas amount: 2,000 volume ppm based on the total amount of gas supplied
- Amount of pure water added: 5% by volume added to the total amount of lubricating oil composition every 24 hours - Stirring speed: 800 r/min
・Test temperature (cycle): (1) 60°C for 4 hours, (2) 95°C for 2 hours, (3) 120°C for 12 hours, and (4) 60°C for 6 hours (1) to (4) ) as one cycle, and the cycle was repeated.
A hot tube test in accordance with JPI-5S-55-99 was conducted at a test temperature of 240° C. using the deteriorated oil prepared as described above. The degree of discoloration of the glass tube after the test was evaluated on a 21-point scale ranging from 0 (black) to 10 (colorless) (merit score) in 0.5 increments. It can be said that the higher the rating, the more excellent the lubricating oil composition is in high-temperature cleanliness. In this example, when the rating was 7.0 or higher, it was determined that the lubricating oil composition had good high-temperature detergency.
表１より、実施例１～７で調製した潤滑油組成物は、成分（Ａ）～（Ｃ）を含有しているため、耐銅溶出性に優れており、良好なロングドレイン性を長期間にわたり保持し得ると考えられる。また、実施例１～７で調製した潤滑油組成物は、高温清浄性にも優れる結果となった。一方で、比較例１～２で調製した潤滑油組成物は、第１級ジアルキルジチオリン酸亜鉛に代えて、第２級ジアルキルジチオリン酸亜鉛を含有しているが、銅溶出量が２５０質量ｐｐｍ超であり、耐銅溶出性に問題がある結果となった。
From Table 1, the lubricating oil compositions prepared in Examples 1 to 7 contain components (A) to (C), so they have excellent copper elution resistance and maintain good long-drain properties for a long period of time. It is thought that it can be maintained for a long time. Furthermore, the lubricating oil compositions prepared in Examples 1 to 7 also showed excellent high-temperature cleanability. On the other hand, the lubricating oil compositions prepared in Comparative Examples 1 and 2 contain secondary zinc dialkyldithiophosphate instead of primary zinc dialkyldithiophosphate, but the amount of copper eluted exceeds 250 mass ppm. This resulted in a problem with copper elution resistance.
Claims (14)
- 基油（Ａ）、ヒンダードアミン系化合物（Ｂ）、及び、少なくとも１つの第１級アルキル基を有する有機ジチオリン酸亜鉛（Ｃ）を含有する、潤滑油組成物。 A lubricating oil composition containing a base oil (A), a hindered amine compound (B), and an organic zinc dithiophosphate (C) having at least one primary alkyl group.
- 成分（Ｃ）が、下記一般式（ｃ－１）で表される化合物（Ｃ１）を含む、請求項１に記載の潤滑油組成物。
- 前記第１級アルキル基の炭素数が１～７である、請求項２に記載の潤滑油組成物。 The lubricating oil composition according to claim 2, wherein the primary alkyl group has 1 to 7 carbon atoms.
- 成分（Ｃ）の含有量が、前記潤滑油組成物の全量基準で、０．０１～７．０質量％である、請求項１～３のいずれか一項に記載の潤滑油組成物。 The lubricating oil composition according to any one of claims 1 to 3, wherein the content of component (C) is 0.01 to 7.0% by mass based on the total amount of the lubricating oil composition.
- 成分（Ｂ）の含有量が、前記潤滑油組成物の全量基準で、０．６０～１０．０質量％である、請求項１～４のいずれか一項に記載の潤滑油組成物。 The lubricating oil composition according to any one of claims 1 to 4, wherein the content of component (B) is 0.60 to 10.0% by mass based on the total amount of the lubricating oil composition.
- 成分（Ｂ）と成分（Ｃ）との含有量比［（Ｂ）／（Ｃ）］が、質量比で、０．５～１０．０である、請求項１～５のいずれか一項に記載の潤滑油組成物。 According to any one of claims 1 to 5, the content ratio [(B)/(C)] of component (B) and component (C) is 0.5 to 10.0 in mass ratio. The described lubricating oil composition.
- 成分（Ｂ）が、下記一般式（ｂ－１）で表される化合物（Ｂ１）及び下記一般式（ｂ－２）で表される化合物（Ｂ２）から選ばれる１種以上を含む、請求項１～６のいずれか一項に記載の潤滑油組成物。
Ｒｂ２は、水素原子、炭素数１～２０のアルキル基、環形成炭素数３～１８のシクロアルキル基、環形成炭素数６～１８のアリール基、水酸基、アミノ基、又は－Ｏ－ＣＯ－Ｒｂ３で表される基（Ｒｂ３は、水素原子又は炭素数１～２０の炭化水素基）である。
Ｚは、炭素数１～２０のアルキレン基、環形成炭素数３～１８のシクロアルキレン基、環形成炭素数６～１８のアリーレン基、酸素原子、硫黄原子、又は－Ｏ－ＣＯ－（ＣＨ２）ｎ－ＣＯ－Ｏ－で表される基（ｎは１～２０の整数）である。〕 A claim in which component (B) contains one or more selected from a compound (B1) represented by the following general formula (b-1) and a compound (B2) represented by the following general formula (b-2): 7. The lubricating oil composition according to any one of 1 to 6.
R b2 is a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 18 ring carbon atoms, an aryl group having 6 to 18 ring carbon atoms, a hydroxyl group, an amino group, or -O-CO- A group represented by R b3 (R b3 is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms).
Z is an alkylene group having 1 to 20 carbon atoms, a cycloalkylene group having 3 to 18 ring carbon atoms, an arylene group having 6 to 18 ring carbon atoms, an oxygen atom, a sulfur atom, or -O-CO-(CH 2 ) n is a group represented by -CO-O- (n is an integer from 1 to 20). ] - さらに、ジチオカルバミン酸モリブデン（Ｄ）を含有する、請求項１～７のいずれか一項に記載の潤滑油組成物。 The lubricating oil composition according to any one of claims 1 to 7, further comprising molybdenum dithiocarbamate (D).
- さらに、成分（Ｂ）には該当しない酸化防止剤（Ｅ）を含み、
成分（Ｅ）が、成分（Ｂ）には該当しないアミン系酸化防止剤（Ｅ１）及びフェノール系酸化防止剤（Ｅ２）から選ばれる１種以上を含む、請求項１～８のいずれか一項に記載の潤滑油組成物。 Furthermore, it contains an antioxidant (E) that does not fall under component (B),
Any one of claims 1 to 8, wherein component (E) contains one or more selected from amine antioxidants (E1) and phenolic antioxidants (E2), which do not fall under component (B). The lubricating oil composition described in . - さらに、イミド化合物（Ｆ）を含み、
成分（Ｆ）が、非ホウ素変性アルケニルコハク酸イミド（Ｆ１）及びホウ素変性アルケニルコハク酸イミド（Ｆ２）から選ばれる１種以上を含む、請求項１～９のいずれかに記載の潤滑油組成物。 Furthermore, it contains an imide compound (F),
The lubricating oil composition according to any one of claims 1 to 9, wherein component (F) contains one or more selected from non-boron modified alkenyl succinimide (F1) and boron modified alkenyl succinimide (F2). . - 成分（Ｆ）が、成分（Ｆ１）及び成分（Ｆ２）含み、
成分（Ｆ１）と成分（Ｆ２）との含有量比［（Ｆ１）／（Ｆ２）］が、質量比で、５．００未満である、請求項１０に記載の潤滑油組成物。 Component (F) contains component (F1) and component (F2),
The lubricating oil composition according to claim 10, wherein the content ratio [(F1)/(F2)] of component (F1) and component (F2) is less than 5.00 in mass ratio. - ハイブリッドシステムの内燃機関の潤滑に用いられる、請求項１～１１のいずれか一項に記載の潤滑油組成物。 The lubricating oil composition according to any one of claims 1 to 11, which is used for lubricating an internal combustion engine of a hybrid system.
- 請求項１～１２のいずれか一項に記載の潤滑油組成物を充填した、ハイブリッドシステムに搭載される、内燃機関。 An internal combustion engine installed in a hybrid system, filled with the lubricating oil composition according to any one of claims 1 to 12.
- 請求項１～１２のいずれか一項に記載の潤滑油組成物をハイブリッドシステムに搭載される内燃機関に適用した、内燃機関の潤滑方法。 A method for lubricating an internal combustion engine, comprising applying the lubricating oil composition according to any one of claims 1 to 12 to an internal combustion engine installed in a hybrid system.
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