EP4368688A1 - Composition lubrifiante - Google Patents
Composition lubrifiante Download PDFInfo
- Publication number
- EP4368688A1 EP4368688A1 EP22837550.7A EP22837550A EP4368688A1 EP 4368688 A1 EP4368688 A1 EP 4368688A1 EP 22837550 A EP22837550 A EP 22837550A EP 4368688 A1 EP4368688 A1 EP 4368688A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mass
- lubricating oil
- less
- oil composition
- ppm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000000203 mixture Substances 0.000 title claims abstract description 236
- 239000000314 lubricant Substances 0.000 title description 2
- 239000010687 lubricating oil Substances 0.000 claims abstract description 230
- -1 boron-modified alkenyl succinimide Chemical compound 0.000 claims abstract description 64
- 150000001875 compounds Chemical class 0.000 claims abstract description 56
- 229960002317 succinimide Drugs 0.000 claims abstract description 42
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 32
- 125000004433 nitrogen atom Chemical group N* 0.000 claims abstract description 24
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 claims abstract description 22
- KZNICNPSHKQLFF-UHFFFAOYSA-N dihydromaleimide Natural products O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000002199 base oil Substances 0.000 claims abstract description 17
- 125000000217 alkyl group Chemical group 0.000 claims description 46
- 125000003342 alkenyl group Chemical group 0.000 claims description 25
- 125000004434 sulfur atom Chemical group 0.000 claims description 19
- 229910052717 sulfur Inorganic materials 0.000 claims description 17
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 14
- 238000005461 lubrication Methods 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 9
- 239000011574 phosphorus Substances 0.000 claims description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 7
- 150000001336 alkenes Chemical class 0.000 claims description 7
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 7
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical compound [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 claims description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 42
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 39
- 229910052802 copper Inorganic materials 0.000 description 37
- 239000010949 copper Substances 0.000 description 37
- 238000010828 elution Methods 0.000 description 36
- 230000000694 effects Effects 0.000 description 29
- 230000003647 oxidation Effects 0.000 description 28
- 238000007254 oxidation reaction Methods 0.000 description 28
- 238000012360 testing method Methods 0.000 description 23
- 229910052751 metal Inorganic materials 0.000 description 19
- 239000002184 metal Substances 0.000 description 19
- 238000009413 insulation Methods 0.000 description 18
- 239000000654 additive Substances 0.000 description 16
- 239000003921 oil Substances 0.000 description 16
- 239000003599 detergent Substances 0.000 description 13
- 239000002480 mineral oil Substances 0.000 description 13
- 239000003963 antioxidant agent Substances 0.000 description 11
- 125000002947 alkylene group Chemical group 0.000 description 10
- 230000007246 mechanism Effects 0.000 description 10
- 235000010446 mineral oil Nutrition 0.000 description 10
- 230000003078 antioxidant effect Effects 0.000 description 8
- 125000003118 aryl group Chemical group 0.000 description 8
- 239000002270 dispersing agent Substances 0.000 description 8
- 239000003607 modifier Substances 0.000 description 8
- 235000014113 dietary fatty acids Nutrition 0.000 description 7
- 239000000194 fatty acid Substances 0.000 description 7
- 229930195729 fatty acid Natural products 0.000 description 7
- 239000002518 antifoaming agent Substances 0.000 description 6
- 239000002585 base Substances 0.000 description 6
- 239000006078 metal deactivator Substances 0.000 description 6
- 125000004437 phosphorous atom Chemical group 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000013112 stability test Methods 0.000 description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 150000001412 amines Chemical class 0.000 description 5
- 239000013556 antirust agent Substances 0.000 description 5
- 229910052791 calcium Inorganic materials 0.000 description 5
- 239000011575 calcium Substances 0.000 description 5
- 230000000994 depressogenic effect Effects 0.000 description 5
- 230000001771 impaired effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910052796 boron Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 150000004665 fatty acids Chemical class 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- 125000000962 organic group Chemical group 0.000 description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 4
- 239000004711 α-olefin Substances 0.000 description 4
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 150000002430 hydrocarbons Chemical group 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 239000001993 wax 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
- 101100208720 Homo sapiens USP5 gene Proteins 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-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
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 102100021017 Ubiquitin carboxyl-terminal hydrolase 5 Human genes 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 125000006267 biphenyl group Chemical group 0.000 description 2
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000004517 catalytic hydrocracking Methods 0.000 description 2
- 238000001816 cooling Methods 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
- 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
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000012208 gear oil 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
- 125000006038 hexenyl group Chemical group 0.000 description 2
- 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 2
- 125000002768 hydroxyalkyl group Chemical group 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
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 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 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
- 230000007935 neutral effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 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
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 2
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 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
- 239000002904 solvent Substances 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
- 239000000126 substance Substances 0.000 description 2
- 239000011593 sulfur Substances 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
- 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
- 125000005065 undecenyl group Chemical group C(=CCCCCCCCCC)* 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
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- BXRRILFCEKZKPU-UHFFFAOYSA-N 2,5-bis(2-methyloctan-2-yldisulfanyl)-1,3,4-thiadiazole Chemical compound CCCCCCC(C)(C)SSC1=NN=C(SSC(C)(C)CCCCCC)S1 BXRRILFCEKZKPU-UHFFFAOYSA-N 0.000 description 1
- 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 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
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-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
- 239000004593 Epoxy Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000004450 alkenylene group Chemical group 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 125000002178 anthracenyl group Chemical group C1(=CC=CC2=CC3=CC=CC=C3C=C12)* 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
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000000732 arylene group Chemical group 0.000 description 1
- 125000004429 atom Chemical group 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
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 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 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
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 150000005676 cyclic carbonates Chemical class 0.000 description 1
- 125000005724 cycloalkenylene group Chemical group 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 125000002993 cycloalkylene group Chemical group 0.000 description 1
- 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 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 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
- 238000004821 distillation Methods 0.000 description 1
- 239000010696 ester oil Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 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
- 125000006178 methyl benzyl group Chemical group 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- VLAPMBHFAWRUQP-UHFFFAOYSA-L molybdic acid Chemical compound O[Mo](O)(=O)=O VLAPMBHFAWRUQP-UHFFFAOYSA-L 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 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
- 235000014593 oils and fats Nutrition 0.000 description 1
- 150000007524 organic acids Chemical class 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
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 125000005561 phenanthryl group Chemical group 0.000 description 1
- 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 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007670 refining Methods 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
- 229920002545 silicone oil Polymers 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
- 239000007790 solid phase Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000004867 thiadiazoles Chemical group 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- C10M157/00—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential
- C10M157/06—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential at least one of them being a sulfur-, selenium- or tellurium-containing compound
-
- 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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
-
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/28—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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
- C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
- C10M2219/106—Thiadiazoles
-
- 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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
-
- 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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/047—Thioderivatives not containing metallic elements
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/14—Metal deactivation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/14—Electric or magnetic purposes
- C10N2040/16—Dielectric; Insulating oil or insulators
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/30—Refrigerators lubricants or compressors lubricants
Definitions
- the present invention relates to a lubricating oil composition, a speed reducer, and use of a lubricating oil composition.
- Various apparatuses such as an engine, a transmission, a speed reducer, a compressor and a hydraulic system have mechanisms such as a torque converter, a wet clutch, a gear bearing mechanism, an oil pump and a hydraulic control mechanism.
- lubricating oil compositions are used, and lubricating oil compositions capable of meeting various requirements have been developed.
- Patent Literature 1 discloses a gear oil composition
- a gear oil composition comprising: a base oil comprising a blend of a low-viscosity mineral oil-based lubricating base oil and a high-viscosity solvent-refined mineral oil-based lubricating oil in a predetermined ratio; and a zinc dialkyldithiophosphate and an alkaline earth metal-based detergent in predetermined amounts, for the purpose of providing a gear oil composition having a fuel saving performance and providing gears, bearings, etc. with sufficient durability.
- Patent Literature 1 JP-A-2012-193255
- a lubricating oil composition used for various apparatuses such as an electric motor sometimes requires not only insulation properties but also, depending on the mode of the apparatus, characteristics of scuffing resistance, copper elution suppressing effect, oxidation stability, etc. That is to say, a novel lubricating oil composition having characteristics (e.g., scuffing resistance, copper elution suppressing effect, oxidation stability, insulation properties) suitable for lubrication meeting various mechanisms incorporated in apparatuses has been desired.
- the present invention provides a lubricating oil composition
- a lubricating oil composition comprising a thiadiazole-based compound and a boron-modified alkenyl succinimide, together with a base oil, wherein a content of the thiadiazole-based compound and contents of boron atoms and nitrogen atoms derived from the boron-modified alkenyl succinimide have been adjusted to be in predetermined ranges.
- the present invention provides lubricating oil compositions according to the following embodiments [1] to [14], a speed reducer and use of a lubricating oil composition.
- the lubricating oil composition of one preferred embodiment of the present invention is a lubricating oil composition having characteristics suitable for various mechanisms incorporated in apparatuses, and the lubricating oil composition of a more preferred embodiment of the present invention can be improved in characteristics of scuffing resistance, copper elution suppressing effect, oxidation stability, insulation properties, etc. in a balanced manner. On that account, these lubricating oil compositions can be preferably used for lubrication of a speed reducer, etc.
- the upper limit and the lower limit can be arbitrarily combined.
- the range of "30 to 80" and the range of "40 to 100” are also included in the numerical range described in the present specification.
- the range of "30 to 80" and the range of "40 to 100” are also included in the numerical range described in the present specification.
- kinematic viscosity and the viscosity index mean values measured or calculated in accordance with JIS K2283:2000.
- the content of nitrogen atoms means a value measured in accordance with JIS K2609.
- the content of sulfur atoms means a value measured in accordance with JIS K2541-6:2013.
- the lubricating oil composition of one embodiment of the present invention comprises a base oil (A) (also referred to as a "component (A)” hereinafter), a thiadiazole-based compound (also referred to as a “component (B)” hereinafter), and a boron-modified alkenyl succinimide (also referred to as a “component (C)” hereinafter).
- A base oil
- component (B) also referred to as a "component (B)” hereinafter
- a boron-modified alkenyl succinimide also referred to as a "component (C)” hereinafter
- the present inventors have found that by preparing a lubricating oil composition containing a thiadiazole-based compound, scuffing resistance is improved, but they have also found that novel problems of increase in elution amount of copper and decrease in oxidation stability occur at the same time.
- the present inventors have made various studies in order to solve such problems, and as a result, they have acquired knowledge that by preparing a lubricating oil composition containing not only a thiadiazole-based compound but also a boron-modified alkenyl succinimide and by adjusting a content of the thiadiazole-based compound in the lubricating oil composition and contents of boron atoms and nitrogen atoms derived from the boron-modified alkenyl succinimide to be in predetermined ranges, the lubricating oil composition can become a lubricating oil composition having been improved in characteristics of scuffing resistance, copper elution suppressing effect, oxidation stability, insulation properties, etc. in a balanced manner.
- the lubricating oil composition of one embodiment of the present invention has been made based on this knowledge.
- the lubricating oil composition of one embodiment of the present invention preferably further contains one or more phosphorus-based compounds (D) (also referred to as a "component (D)" hereinafter) selected from a phosphoric acid ester and a phosphorous acid ester, from the viewpoint of obtaining a lubricating oil composition having been further improved in wear resistance.
- D phosphorus-based compounds
- the lubricating oil composition of one embodiment of the present invention may further contain various additives other than the components (B) to (D) when needed as long as the effects of the present invention are not impaired.
- the total content of the components (A), (B) and (C) is preferably 50 mass% or more, more preferably 60 mass% or more, still more preferably 70 mass% or more, still much more preferably 75 mass% or more, and particularly preferably 80 mass% or more, or may be 85 mass% or more, 90 mass% or more, or 92 mass% or more, and it may be 100 mass% or less, 99.5 mass% or less, 99.0 mass% or less, 98.5 mass% or less, 98.0 mass% or less, 97.5 mass% or less, 97.0 mass% or less, 96.5 mass% or less, or 96.0 mass% or less, based on the total amount (100 mass%) of the lubricating oil composition.
- the total content of the components (A), (B), (C) and (D) is preferably more than 50 mass%, more preferably more than 60 mass%, still more preferably more than 70 mass%, still much more preferably more than 75 mass%, and particularly preferably more than 80 mass%, or may be more than 83 mass%, more than 85 mass%, more than 87 mass%, more than 90 mass%, more than 92 mass%, or 94 mass% or more, and it may be 100 mass% or less, 99.9 mass% or less, 99.5 mass% or less, 99.0 mass% or less, 98.5 mass% or less, 98.0 mass% or less, 97.5 mass% or less, 97.0 mass% or less, 96.5 mass% or less, or 96.0 mass% or less, based on the total amount (100 mass%) of the lubricating oil composition.
- base oil that is the component (A) used in one embodiment of the present invention
- one or more selected from mineral oils and synthetic oils can be mentioned.
- mineral oils examples include atmospheric residues obtained by subjecting crude oils, such as paraffinic crude oil, intermediate base crude oil and naphthenic crude oil, to atmospheric distillation; distillates obtained by subjecting these atmospheric residues to vacuum distillation; and refined oils obtained by subjecting the distillates to one or more of refining treatments, such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, and hydrorefining (hydrocracking).
- crude oils such as paraffinic crude oil, intermediate base crude oil and naphthenic crude oil
- refining treatments such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, and hydrorefining (hydrocracking).
- the synthetic oils include poly- ⁇ -olefins, such as an ⁇ -olefin homopolymer and an ⁇ -olefin copolymer (for example, an ⁇ -olefin copolymer having 8 to 14 carbon atoms such as an ethylene- ⁇ -olefin copolymer); isoparaffin; polyalkylene glycol; ester oils, such as polyol ester, dibasic acid ester, and phosphoric acid ester; ether oils, such as polyphenyl ether; alkylbenzene; alkylnaphthalene; and synthetic oil (GTL) obtained by isomerizing wax (GTL WAX (Gas To Liquids WAX)) produced from natural gas through Fischer-Tropsch process or the like.
- GTL WAX Gas To Liquids WAX
- the component (A) used in one embodiment of the present invention preferably contains one or more selected from mineral oils classified in Group II and Group III of API (American Petroleum Institute) base oil categories, and synthetic oils.
- the kinematic viscosity of the component (A) used in one embodiment of the present invention at 100°C is preferably 1.9 mm 2 /s or more, more preferably 2.0 mm 2 /s or more, more preferably 2.1 mm 2 /s or more, and still more preferably 2.2 mm 2 /s or more, or may be 2.3 mm 2 /s or more, 2.5 mm 2 /s or more, 2.7 mm 2 /s or more, 2.9 mm 2 /s or more, 3.0 mm 2 /s or more, 3.2 mm 2 /s or more, 3.4 mm 2 /s or more, or 3.6 mm 2 /s or more, and it is preferably 5.0 mm 2 /s or less, more preferably 4.8 mm 2 /s or less, more preferably 4.6 mm 2 /s or less, still more preferably 4.5 mm 2 /s or less, still much more preferably 4.3 mm 2 /s or less, and particularly preferably
- the viscosity index of the component (A) used in one embodiment of the present invention is preferably 70 or more, more preferably 80 or more, still more preferably 90 or more, and still much more preferably 100 or more.
- the kinematic viscosity and the viscosity index of the mixed oil are preferably in the above ranges.
- the mixed oil may be prepared so as to have a kinematic viscosity and a viscosity index in the above ranges.
- the content of the component (A) is preferably 45 mass% or more, more preferably 50 mass% or more, more preferably 55 mass% or more, still more preferably 60 mass% or more, still much more preferably 65 mass% or more, and particularly preferably 70 mass% or more, or may be 75 mass% or more, 80 mass% or more, 85 mass% or more, 90 mass% or more, or 92 mass% or more, and it is preferably 99.99 mass% or less, more preferably 99.90 mass% or less, more preferably 99.50 mass% or less, still more preferably 99.00 mass% or less, still much more preferably 98.50 mass% or less, and particularly preferably 98.00 mass% or less, or may be 97.50 mass% or less, 97.00 mass% or less, 96.50 mass% or less, or 96.00 mass% or less, based on the total amount (100 mass%) of the lubricating oil composition.
- the lubricating oil composition of one embodiment of the present invention can become a lubricating oil composition having been improved in scuffing resistance by containing a thiadiazole-based compound as the component (B).
- the scuffing resistance improving effect of the component (B) can be more effectively exhibited even in a lubricating oil composition whose viscosity has been lowered.
- the component (B) may be used singly, or may be used in combination of two or more.
- the component (B) also causes increase in elution amount of copper and decrease in oxidation stability.
- the content of the component (B) is restricted to less than 0.60 mass% based on the total amount (100 mass%) of the lubricating oil composition. In other words, in a lubricating oil composition in which the content of the component (B) is 0.60 mass% or more, increase in elution amount of copper and decrease in oxidation stability tend to occur.
- the content of the component (B) in the lubricating oil composition of one embodiment of the present invention is less than 0.60 mass%, preferably 0.57 mass% or less, more preferably 0.55 mass% or less, more preferably 0.52 mass% or less, more preferably 0.50 mass% or less, still more preferably 0.47 mass% or less, still more preferably 0.45 mass% or less, still more preferably 0.42 mass% or less, still much more preferably 0.40 mass% or less, and particularly preferably 0.39 mass% or less, or may be 0.38 mass% or less, 0.37 mass% or less, 0.36 mass% or less, 0.35 mass% or less, 0.34 mass% or less, 0.33 mass% or less, or 0.32 mass% or less, based on the total amount (100 mass%) of the lubricating oil composition.
- the content of the component (B) in the lubricating oil composition of one embodiment of the present invention is preferably 0.01 mass% or more, more preferably 0.05 mass% or more, more preferably 0.07 mass% or more, more preferably 0.10 mass% or more, still more preferably 0.12 mass% or more, still more preferably 0.15 mass% or more, still more preferably 0.17 mass% or more, still much more preferably 0.20 mass% or more, and particularly preferably 0.22 mass% or more, or may be 0.23 mass% or more, 0.24 mass% or more, 0.25 mass% or more, 0.26 mass% or more, 0.27 mass% or more, or 0.28 mass% or more, based on the total amount (100 mass%) of the lubricating oil composition.
- the content of the component (B) in terms of sulfur atoms in the lubricating oil composition of one embodiment of the present invention is preferably 30 ppm by mass or more, more preferably 50 ppm by mass or more, more preferably 100 ppm by mass or more, more preferably 150 ppm by mass or more, still more preferably 200 ppm by mass or more, still more preferably 250 ppm by mass or more, still more preferably 300 ppm by mass or more, still much more preferably 400 ppm by mass or more, and particularly preferably 500 ppm by mass or more, or may be 600 ppm by mass or more, 650 ppm by mass or more, 700 ppm by mass or more, 750 ppm by mass or more, 800 ppm by mass or more, 850 ppm by mass or more, 900 ppm by mass or more, 950 ppm by mass or more, or 1000 ppm
- the content of the component (B) in terms of nitrogen atoms in the lubricating oil composition of one embodiment of the present invention is preferably 10 ppm by mass or more, more preferably 30 ppm by mass or more, more preferably 50 ppm by mass or more, more preferably 60 ppm by mass or more, still more preferably 70 ppm by mass or more, still more preferably 80 ppm by mass or more, still more preferably 90 ppm by mass or more, still much more preferably 100 ppm by mass or more, and particularly preferably 120 ppm by mass or more, or may be 130 ppm by mass or more, 140 ppm by mass or more, 150 ppm by mass or more, 160 ppm by mass or more, 170 ppm by mass or more, 180 ppm by mass or more, or 190 ppm by mass or more, and from the viewpoint of obtaining a lubricating oil composition having
- the thiadiazole-based compound that is the component (B) used in one embodiment of the present invention may be any compound as long as it is a compound having a thiadiazole ring, but from the viewpoint of obtaining a lubricating oil composition having been more improved in scuffing resistance, it preferably contains a compound represented by any one of the following general formulae (b-1) to (b-4), and more preferably contains at least a compound represented by the following general formula (b-1).
- the component (B) may be used singly, or may be used in combination of two or more.
- R 1 and R 2 are each independently a hydrocarbon group.
- n and n are each independently an integer of 1 to 10, but from the viewpoint of obtaining a lubricating oil composition having been more improved in scuffing resistance, they are each independently preferably an integer of 1 to 6, more preferably an integer of 1 to 4, still more preferably an integer of 2 to 3, and still much more preferably 2.
- hydrocarbon groups capable of being selected as R 1 and R 2 include straight-chain or branched chain alkyl groups, such as a methyl group, an ethyl group, a propyl group (n-propyl group, isopropyl group), a butyl group (n-butyl group, s-butyl group, t-butyl group, isobutyl group), a pentyl group, a hexyl group, a heptyl group, an octyl group, a 2-ethylhexyl group, a nonyl group, a 1,1-dimethylheptyl group, a decyl group, an undecyl group, a dodecyl group, a tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a heptadecyl group and an o
- the number of carbon atoms of the hydrocarbon group capable of being selected as R 1 and R 2 is preferably 1 or more, more preferably 2 or more, still more preferably 3 or more, and still much more preferably 5 or more, or may be 7 or more, 8 or more, or 9 or more, and it is preferably 30 or less, more preferably 24 or less, more preferably 20 or less, more preferably 18 or less, still more preferably 16 or less, still more preferably 14 or less, and still much more preferably 12 or less, or may be 11 or less, or 10 or less.
- R 1 and R 2 are each independently preferably an alkyl group among these, and from the viewpoint of obtaining a lubricating oil composition capable of effectively suppressing elution of copper by being improved in copper corrosion prevention together with scuffing resistance, they are each independently more preferably a branched chain alkyl group, and still more preferably a branched chain alkyl group having 5 or more carbon atoms.
- the number of carbon atoms of the branched chain alkyl group is preferably 5 or more, but it is more preferably 7 or more, still more preferably 8 or more, and still much more preferably 9 or more, and it is preferably 30 or less, more preferably 24 or less, more preferably 20 or less, more preferably 18 or less, still more preferably 16 or less, still more preferably 14 or less, and still much more preferably 12 or less, or may be 11 or less, or 10 or less.
- the total content of the compounds each of which is represented by any one of the general formulae (b-1) to (b-4) is preferably 60 to 100 mass%, more preferably 70 to 100 mass%, still more preferably 80 to 100 mass%, still much more preferably 90 to 100 mass%, and particularly preferably 95 to 100 mass%, based on the total amount (100 mass%) of the component (B) contained in the lubricating oil composition, from the viewpoint of obtaining a lubricating oil composition having been more improved in scuffing resistance.
- the content of the compound represented by the general formula (b-1) is preferably 50 to 100 mass%, more preferably 60 to 100 mass%, still more preferably 70 to 100 mass%, still much more preferably 80 to 100 mass%, and particularly preferably 90 to 100 mass%, based on the total amount (100 mass%) of the component (B) contained in the lubricating oil composition, from the above viewpoint.
- the content of a compound represented by the following general formula (b-x) is preferably less than 10 mass%, more preferably less than 8 mass%, still more preferably less than 5 mass%, still much more preferably less than 3 mass%, and particularly preferably less than 1 mass%, based on the total amount (100 mass%) of the component (B) contained in the lubricating oil composition.
- R a is a hydrogen atom or a methyl group
- R b is an alkyl group having 1 to 4 carbon atoms
- p is 0 or 1.
- the component (B) preferably contains a thiadiazole-based compound (B1) having a branched chain alkyl group (also referred to as a "component (B1)" hereinafter), from the viewpoint of obtaining a lubricating oil composition having been more improved in scuffing resistance and having good copper elution suppressing effect.
- a thiadiazole-based compound (B1) having a branched chain alkyl group also referred to as a "component (B1)” hereinafter
- the content of the component (B1) is preferably 50 to 100 mass%, more preferably 60 to 100 mass%, more preferably 70 to 100 mass%, still more preferably 80 to 100 mass%, still much more preferably 90 to 100 mass%, and particularly preferably 95 to 100 mass%, based on the total amount (100 mass%) of the component (B) contained in the lubricating oil composition.
- the number of carbon atoms of the branched chain alkyl group of the component (B1) is preferably 5 or more, more preferably 7 or more, still more preferably 8 or more, and still much more preferably 9 or more, and it is preferably 30 or less, more preferably 24 or less, more preferably 20 or less, more preferably 18 or less, still more preferably 16 or less, still more preferably 14 or less, and still much more preferably 12 or less, or may be 11 or less, or 10 or less.
- the component (B1) is preferably a compound represented by any one of the general formulae (b-1) to (b-4) wherein R 1 and R 2 are each independently a branched chain alkyl group, and is more preferably a compound represented by the general formula (b-1) wherein R 1 and R 2 are each independently a branched chain alkyl group.
- R 1 and R 2 are each independently a branched chain alkyl group.
- a preferred range of the number of carbon atoms of the branched chain alkyl group is as previously described.
- the lubricating oil composition of one embodiment of the present invention may contain a sulfurized olefin as long as the effects of the present invention are not impaired.
- the content of the sulfurized olefin is preferably as small as possible, from the viewpoint of obtaining a lubricating oil composition having good scuffing resistance, copper elution suppressing effect, oxidation stability and insulation properties.
- the content of the sulfurized olefin in the lubricating oil composition of one embodiment of the present invention is preferably less than 0.20 mass%, more preferably less than 0.18 mass%, more preferably less than 0.15 mass%, still more preferably less than 0.12 mass%, still much more preferably less than 0.10 mass%, and particularly preferably less than 0.07 mass%, or may be less than 0.05 mass%, less than 0.04 mass%, less than 0.03 mass%, less than 0.02 mass%, less than 0.01 mass%, or less than 0.001 mass%, based on the total amount (100 mass%) of the lubricating oil composition.
- R is an alkenyl group having 2 to 20 carbon atoms
- R' is an alkenyl group having 2 to 20 carbon atoms or an alkyl group having 2 to 20 carbon atoms
- q is an integer of 1 to 10.
- the lubricating oil composition of one embodiment of the present invention contains a boron-modified alkenyl succinimide as the component (C).
- the component (B) contributes to improvement in scuffing resistance, but at the same time, it also causes increase in elution amount of copper and decrease in oxidation stability. Therefore, by incorporating the component (C) together with the component (B) in the lubricating oil composition of one embodiment of the present invention, a lubricating oil composition having excellent copper elution suppressing effect and oxidation stability while exhibiting excellent scuffing resistance is obtained.
- the component (C) may be used singly, or may be used in combination of two or more.
- the component (C) satisfies the following requirements (I) and (II).
- a lubricating oil composition having been improved in copper elution suppressing effect and oxidation stability can be obtained.
- a lubricating oil composition having the content ratio [B/N] of less than 0.35 is inferior in copper elution suppressing effect and oxidation stability.
- a lubricating oil composition favorably maintaining scuffing resistance and insulation properties can be obtained.
- a lubricating oil composition in which a content of boron atoms derived from the component (C) is more than 300 ppm by mass is inferior in scuffing resistance and insulation properties.
- the content ratio [B/N] by mass of boron atoms to nitrogen atoms derived from the component (C) in the lubricating oil composition of one embodiment of the present invention is 0.35 or more as specified in the requirement (1), preferably 0.40 or more, more preferably 0.45 or more, more preferably 0.50 or more, more preferably 0.55 or more, still more preferably 0.60 or more, still more preferably 0.65 or more, still more preferably 0.70 or more, still much more preferably 0.75 or more, and particularly preferably 0.80 or more, or may be 0.85 or more, or 0.90 or more.
- the content ratio [B/N] by mass of boron atoms to nitrogen atoms derived from the component (C) may be 2.0 or less, 1.9 or less, 1.8 or less, 1.7 or less, 1.6 or less, 1.5 or less, 1.4 or less, or 1.3 or less.
- the content of boron atoms derived from the component (C) in the lubricating oil composition of one embodiment of the present invention is 300 ppm by mass or less, preferably 280 ppm by mass or less, more preferably 250 ppm by mass or less, more preferably 220 ppm by mass or less, more preferably 200 ppm by mass or less, still more preferably 180 ppm by mass or less, still more preferably 160 ppm by mass or less, still more preferably 150 ppm by mass or less, still much more preferably 140 ppm by mass or less, and particularly preferably 130 ppm by mass or less, or may be 125 ppm by mass or less, 120 ppm by mass or less, 115 ppm by mass or less, or 110 ppm by mass or less, based on the total amount (100 mass%) of the lubricating oil composition.
- the content of boron atoms derived from the component (C) is preferably 3.0 ppm by mass or more, more preferably 5.0 ppm by mass or more, more preferably 7.0 ppm by mass or more, more preferably 10.0 ppm by mass or more, still more preferably 12.0 ppm by mass or more, still more preferably 15.0 ppm by mass or more, still more preferably 17.0 ppm by mass or more, still much more preferably 20.0 ppm by mass or more, and particularly preferably 22.0 ppm by mass or more, or may be 25.0 ppm by mass or more, 30.0 ppm by mass or more, 35.0 ppm by mass or more, 40.0 ppm by mass or more, 45.0 ppm by mass or more, 50.0 ppm by mass or more, 55.0 ppm by mass or more, 60.0 ppm by mass or more, 65.0
- the content of nitrogen atoms derived from the component (C) in the lubricating oil composition of one embodiment of the present invention is preferably 5.0 ppm by mass or more, more preferably 7.0 ppm by mass or more, more preferably 9.0 ppm by mass or more, more preferably 10.0 ppm by mass or more, still more preferably 12.0 ppm by mass or more, still more preferably 15.0 ppm by mass or more, still more preferably 17.0 ppm by mass or more, still much more preferably 20.0 ppm by mass or more, and particularly preferably 22.0 ppm by mass or more, or may be 25.0 ppm by mass or more, 30.0 ppm by mass or more, 35.0 ppm by mass or more, 40.0 ppm by mass or more, 45.0 ppm by mass or more, 50.0 ppm by
- component (C) used in one embodiment of the present invention one or more selected from a boron-modified alkenyl bis-succinimide (C1) and a boron-modified alkenyl monosuccinimide (C2) can be mentioned.
- the component (C) used in one embodiment of the present invention preferably contains a boron-modified alkenyl bis-succinimide (C1).
- the content of the component (C1) is preferably 20 to 100 mass%, more preferably 40 to 100 mass%, more preferably 50 to 100 mass%, still more preferably 60 to 100 mass%, still more preferably 70 to 100 mass%, still much more preferably 80 to 100 mass%, and particularly preferably 90 to 100 mass%, based on the total amount (100 mass%) of the component (C) contained in the lubricating oil composition.
- component (C1) a boron-modified product of a compound represented by the aforementioned general formula (c-1) can be mentioned.
- component (C2) a boron-modified product of a compound represented by the aforementioned general formula (c-2) can be mentioned.
- R a1 , R a2 and R a3 are each independently an alkenyl group having a mass-average molecular weight (Mw) of 500 to 3000 (preferably 900 to 2500).
- Examples of the alkenyl groups capable of being selected as R a1 , R a2 and R a3 include a polybutenyl group, a polyisobutenyl group and an ethylene-propylene copolymer, and among these, a polybutenyl group or a polyisobutenyl group is preferable.
- R b1 , R b2 and R b3 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, and more preferably 2 or 3.
- z2 is an integer of 1 to 10, preferably an integer of 2 to 5, and more preferably 3 or 4.
- the lubricating oil composition of one embodiment of the present invention may contain an ashless dispersant other than the component (C) as long as the effects of the present invention are not impaired.
- ashless dispersants other than the component (C) a non-boron modified alkenyl succinimide and an alkenyl succinimide modified with a substance other than boron can be mentioned.
- non-boron modified alkenyl succinimide examples include an alkenyl bis-succinimide represented by the aforementioned general formula (c-1) and an alkenyl monosuccinimide represented by the aforementioned general formula (c-2).
- Examples of the alkenyl succinimide modified with a substance other than boron include reaction products obtained by reacting a compound represented by the aforementioned general formula (c-1) or (c-2) with one or more selected from an alcohol, an aldehyde, a ketone, an alkylphenol, a cyclic carbonate, an epoxy compound, an organic acid, and the like.
- the content of the ashless dispersant other than the component (C) may be 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% or less, 2.0 mass% or less, 1.0 mass% or less, 0.7 mass% or less, 0.5 mass% or less, 0.3 mass% or less, 0.2 mass% or less, or 0.1 mass% or less, and it may be 0 mass% or more, 0.001 mass% or more, or 0.1 mass% or more, based on the total amount (100 mass%) of the lubricating oil composition.
- the lubricating oil composition of one embodiment of the present invention preferably further contains one or more phosphorus-based compounds (D) selected from a phosphoric acid ester and a phosphorous acid ester, from the viewpoint of obtaining a lubricating oil composition having been further improved in wear resistance.
- D phosphorus-based compounds
- Examples of the phosphoric acid ester used as the component (D) in one embodiment of the present invention include a neutral phosphoric acid ester represented by the following general formula (d-1) and an acidic phosphoric acid ester represented by the following general formula (d-2) or (d-3).
- Examples of the phosphorous acid ester used as the component (D) in one embodiment of the present invention include an acidic phosphorous acid ester represented by the following general formula (d-4) or (d-5).
- each R A is independently an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, an aryl group having 6 to 18 carbon atoms which may be substituted by an alkyl group having 1 to 6 carbon atoms, a group having a sulfide bond, or the like.
- Multiple R A may be the same as one another, or may be different from one another.
- alkyl groups capable of being selected as R A include a methyl group, an ethyl group, a propyl group (n-propyl group, isopropyl group), a butyl group (n-butyl group, s-butyl group, t-butyl group, isobutyl group), a pentyl group, a hexyl group, a 2-ethylhexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, an undecyl group, a dodecyl group, tridecyl group, a tetradecyl group, a hexadecyl group and an octadecyl group.
- alkyl groups may be straight-chain alkyl groups or may be branched chain alkyl groups.
- the number of carbon atoms of the alkyl group is 1 to 30, but it is preferably 3 to 20, more preferably 5 to 16, still more preferably 6 to 14, and still much more preferably 8 to 12.
- alkenyl groups capable of being selected as R A include an ethenyl group, a propenyl group, a butenyl group, a pentenyl group, a hexenyl group, a heptenyl group, an octenyl group, a nonenyl group, a decenyl group, an undecenyl group, a dodecenyl group, a tridecenyl group, a tetradecenyl group, a pentadecenyl group, a hexadecenyl group and an octadecenyl group.
- alkenyl groups may be straight-chain alkenyl groups or may be branched chain alkenyl groups.
- the number of carbon atoms of the alkenyl group is 2 to 20, but it is preferably 3 to 16, and more preferably 6 to 12.
- Examples of the aryl groups capable of being selected as R A include a phenyl group, a naphthyl group, an anthryl group, a phenanthryl group, a biphenyl group, a terphenyl group and a phenylnaphthyl group, and preferable is a phenyl group.
- alkyl group having 1 to 6 carbon atoms examples include alkyl groups having 1 to 6 carbon atoms among the aforementioned alkyl groups.
- the group having a sulfide bond which is capable of being selected as R A , is preferably a group represented by the following general formula (ii). *-R A02 -S x -R A01 (ii)
- R A01 is a hydrogen atom or a monovalent organic group having 1 to 20 carbon atoms.
- R A02 is a divalent organic group, x is an integer of 1 or more, preferably an integer of 1 to 10, more preferably an integer of 1 to 5, still more preferably an integer of 1 to 3, still much more preferably 1 or 2, and particularly preferably 1.
- * represents a bonding position.
- the alkyl group capable of being selected as R A01 may be a straight-chain alkyl group or may be a branched chain alkyl group, but it is preferably a straight-chain alkyl group.
- the number of carbon atoms of the alkyl group is 1 to 20, but it is preferably 2 to 18, more preferably 4 to 16, still more preferably 6 to 12, and still much more preferably 8 to 10.
- the alkylene group capable of being selected as R A02 may be a straight-chain alkylene group or may be a branched chain alkylene group, but it is preferably a straight-chain alkylene group.
- the number of carbon atoms of the alkylene group is 1 to 20, but it is preferably 1 to 12, more preferably 1 to 8, still more preferably 1 to 4, still much more preferably 1, 2 or 4, and particularly preferably 2.
- the component (D) preferably contains one or more sulfur-phosphorus-based compounds (D1) selected from a sulfur atom-containing phosphoric acid ester and a sulfur atom-containing phosphorous acid ester, from the viewpoint of obtaining a lubricating oil composition having been further improved in wear resistance.
- the content of the component (D1) is preferably 60 to 100 mass%, more preferably 70 to 100 mass%, more preferably 80 to 100 mass%, still more preferably 90 to 100 mass%, still much more preferably 95 to 100 mass%, and particularly preferably 98 to 100 mass%, based on the total amount (100 mass%) of the component (D) contained in the lubricating oil composition, from the viewpoint of obtaining a lubricating oil composition having been further improved in wear resistance.
- the component (D1) used in one embodiment of the present invention is preferably a sulfur atom-containing phosphorus acid ester having a group represented by the formula (ii), and is more preferably one or more selected from a compound (D11) represented by the following general formula (d-11) and a compound (D12) represented by the following general formula (d-12).
- R A11 , R A21 and R A22 are each independently a hydrogen atom or an alkyl group having 1 to 20 carbon atoms.
- the alkyl group may be a straight-chain alkyl group or may be a branched chain alkyl group, but it is preferably a straight-chain alkyl group.
- the number of carbon atoms of the alkyl group is 1 to 20, but it is preferably 2 to 18, more preferably 4 to 16, still more preferably 6 to 12, and still much more preferably 8 to 10.
- a1, a2 and a3 are each independently an integer of 1 to 20, but preferably an integer of 1 to 12, more preferably an integer of 1 to 8, still more preferably an integer of 1 to 4, still much more preferably 1, 2 or 4, and particularly preferably 2.
- the component (D) still more preferably contains both of the compound (D11) represented by the general formula (d-11) and the compound (D12) represented by the general formula (d-12), from the viewpoint of obtaining a lubricating oil composition having been further improved in wear resistance.
- the content ratio by mass of the compound (D11) to the compound (D12), [(D11)/(D12)], is preferably 1/20 to 20/1, more preferably 1/16 to 10/1, more preferably 1/14 to 5/1, still more preferably 1/12 to 2/1, still much more preferably 1/11 to 1/1, and particularly preferably 1/10 to 1/2.
- the acid phosphoric acid ester and the acid phosphorous acid ester each of which is used as the component (D) in one embodiment of the present invention may be each in the form of an amine salt.
- the amine to form the amine salt is preferably a compound represented by the following general formula (d-i).
- the amine may be used singly, or may be used in combination of two or more.
- r is an integer of 1 to 3, and is preferably 1.
- Each R x is independently an alkyl group having 6 to 18 carbon atoms, an alkenyl group having 6 to 18 carbon atoms, an aryl group having 6 to 18 carbon atoms, or a hydroxyalkyl group having 6 to 18 carbon atoms.
- the multiple R x may be the same as one another, or may be different from one another.
- Examples of the alkyl group having 6 to 18 carbon atoms, the alkenyl group having 6 to 18 carbon atoms and the aryl group having 6 to 18 carbon atoms capable of being selected as R x include groups having carbon atoms of the above ranges among the groups given as examples of the alkyl group, the alkenyl group and the aryl group capable of being selected as R 21 to R 23 .
- hydroxyalkyl group having 6 to 18 carbon atoms a group wherein a hydrogen atom of an alkyl group having 6 to 18 carbon atoms is substituted by a hydroxyl group can be mentioned, and specific examples thereof include a hydroxyhexyl group, a hydroxyoctyl group, a hydroxydodecyl group and a hydroxytridecyl group.
- the content of the component (D) in the lubricating oil composition of one embodiment of the present invention is preferably 0.01 mass% or more, more preferably 0.05 mass% or more, still more preferably 0.07 mass% or more, still much more preferably 0.10 mass% or more, and particularly preferably 0.15 mass% or more, or may be 0.17 mass% or more, 0.20 mass% or more, 0.23 mass% or more, 0.25 mass% or more, 0.27 mass% or more, or 0.30 mass% or more, and it is preferably 3.0 mass% or less, more preferably 2.5 mass% or less, still more preferably 2.0 mass% or less, still much more preferably 1.5 mass% or less, and particularly preferably 1.2 mass% or less, or may be 1.0 mass% or less, 0.95 mass% or less, 0.90 mass% or less, 0.85 mass% or less, 0.80 mass% or less, 0.75 mass% or less, 0.70 mass% or less, 0.65 mass% or
- the content of the component (D) in terms of phosphorus atoms in the lubricating oil composition of one embodiment of the present invention is preferably 30 ppm by mass or more, more preferably 50 ppm by mass or more, more preferably 70 ppm by mass or more, more preferably 100 ppm by mass or more, still more preferably 120 ppm by mass or more, still more preferably 150 ppm by mass or more, still more preferably 180 ppm by mass or more, still much more preferably 200 ppm by mass or more, still much more preferably 220 ppm by mass or more, still much more preferably 250 ppm by mass or more, and particularly preferably 270 ppm by mass or more, and is preferably 800 ppm by mass or less, more preferably 700 ppm by mass or less, still more preferably 600 ppm by mass or less, still much more preferably 500 ppm by mass or less, and particularly preferably
- the content of the component (D) in terms of sulfur atoms in the lubricating oil composition of one embodiment of the present invention is preferably 50 ppm by mass or more, more preferably 70 ppm by mass or more, more preferably 100 ppm by mass or more, more preferably 120 ppm by mass or more, still more preferably 150 ppm by mass or more, still more preferably 180 ppm by mass or more, still more preferably 200 ppm by mass or more, still much more preferably 220 ppm by mass or more, still much more preferably 250 ppm by mass or more, still much more preferably 270 ppm by mass or more, and particularly preferably 300 ppm by mass or more, and is preferably 800 ppm by mass or less, more preferably 700 ppm by mass or less, still more preferably 600 ppm by mass or less, still much more preferably 500 ppm by mass or less, and particularly preferably 450
- the content of a sulfur atom-free acid phosphoric acid ester in terms of phosphorus atoms may be less than 100 ppm by mass, less than 50 ppm by mass, less than 10 ppm by mass, less than 8 ppm by mass, less than 5 ppm by mass, less than 3 ppm by mass, or less than 1 ppm by mass, based on the total amount (100 mass%) of the lubricating oil composition.
- the content of a sulfur atom-free neutral phosphoric acid ester in terms of phosphorus atoms may be less than 50 ppm by mass, less than 10 ppm by mass, less than 8 ppm by mass, less than 5 ppm by mass, less than 3 ppm by mass, or less than 1 ppm by mass, based on the total amount (100 mass%) of the lubricating oil composition.
- the lubricating oil composition of one embodiment of the present invention may contain various additives other than the components (B) to (D) when needed as long as the effects of the present invention are not impaired.
- additives examples include a pour point depressant, an antioxidant, a metal-based detergent, a metal deactivator, a friction modifier, an anti-rust agent, and an anti-foaming agent.
- lubricating oil additives may be each used singly, or may be each used in combination of two or more.
- the contents of these lubricating oil additives can be each appropriately adjusted as long as the effects of the present invention are not impaired, and the contents of the additives are each independently usually 0.001 to 15 mass%, preferably 0.005 to 10 mass%, and more preferably 0.01 to 5 mass%, based on the total amount (100 mass%) of the lubricating oil composition.
- the lubricating oil composition of one embodiment of the present invention may further contain a pour point depressant.
- the pour point depressant may be used singly, or may be used in combination of two or more.
- pour point depressants used in one embodiment of the present invention include an ethylenevinyl acetate copolymer, a condensate of chlorinated paraffin and naphthalene, a condensate of chlorinated paraffin and phenol, polymethacrylate, and polyalkylstyrene.
- the lubricating oil composition of one embodiment of the present invention may further contain an antioxidant.
- the antioxidant may be used singly, or may be used in combination of two or more.
- antioxidants used in one embodiment of the present invention include amine-based antioxidants, such as alkylated diphenylamine, phenylnaphthylamine, and alkylated phenylnaphthylamine; and phenol-based antioxidants, such as 2,6-di-t-butylphenol, 4,4'-methylenebis(2,6-di-t-butylphenol), isooctyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, and n-octadecyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate.
- amine-based antioxidants such as alkylated diphenylamine, phenylnaphthylamine, and alkylated phenylnaphthylamine
- phenol-based antioxidants such as 2,6-di-t-butylphenol, 4,4'-methylenebis
- the antioxidant a combination of an amine-based antioxidant and a phenol-based antioxidant.
- the lubricating oil composition of one embodiment of the present invention may further contain a metal-based detergent.
- the metal-based detergent may be used singly, or may be used in combination of two or more.
- metal-based detergents used in one embodiment of the present invention include metal salts, such as a metal sulfonate, a metal salicylate, and a metal phenate.
- the metal to constitute the metal salts is preferably a metal atom selected from alkali metals and alkaline earth metals, more preferably sodium, calcium, magnesium or barium, and still more preferably calcium.
- the metal-based detergent preferably contains one or more selected from calcium sulfonate, calcium salicylate and calcium phenate, and more preferably contains calcium sulfonate.
- the content of the calcium sulfonate is preferably 50 to 100 mass%, more preferably 60 to 100 mass%, still more preferably 70 to 100 mass%, and still much more preferably 80 to 100 mass%, based on the total amount (100 mass%) of the metal-based detergent contained in the lubricating oil composition.
- the base number of the metal-based detergent is preferably 0 to 600 mgKOH/g.
- the metal-based detergent is preferably an overbased metal-based detergent having a base number of 100 mgKOH/g or more.
- the base number of the overbased metal-based detergent is 100 mgKOH/g or more, but it is preferably 150 to 500 mgKOH/g, and more preferably 200 to 450 mgKOH/g.
- base number means a base number measured by perchloric acid method in accordance with JIS K2501:2003 "Petroleum products and lubricants - Determination of neutralization number", 7.
- the lubricating oil composition of one embodiment of the present invention may further contain a metal deactivator.
- the metal deactivator may be used singly, or may be used in combination of two or more.
- Examples of the metal deactivators used in one embodiment of the present invention include a benzotriazole-based compound, a tolyltriazole-based compound, an imidazole-based compound, and a pyrimidine-based compound.
- the lubricating oil composition of one embodiment of the present invention may further contain a friction modifier.
- the friction modifier may be used singly, or may be used in combination of two or more.
- friction modifiers used in one embodiment of the present invention include molybdenum-based friction modifiers, such as molybdenum dithiocarbamate (MoDTC), molybdenum dithiophosphate (MoDTP), and an amine salt of molybdic acid; ashless friction modifiers, such as an aliphatic amine, a fatty acid ester, a fatty acid amide, a fatty acid, an aliphatic alcohol, and an aliphatic ether, each of which has at least one alkyl group or alkenyl group having 6 to 30 carbon atoms; oils and fats, an amine, an amide, and a sulfurized ester.
- MoDTC molybdenum dithiocarbamate
- MoDTP molybdenum dithiophosphate
- amine salt of molybdic acid ashless friction modifiers, such as an aliphatic amine, a fatty acid ester, a fatty acid amide, a fatty acid, an
- the lubricating oil composition of one embodiment of the present invention may further contain an anti-rust agent.
- the anti-rust agent may be used singly, or may be used in combination of two or more.
- the lubricating oil composition of one embodiment of the present invention may further contain an anti-foaming agent.
- the anti-foaming agent may be used singly, or may be used in combination of two or more.
- anti-foaming agents used in one embodiment of the present invention include a silicone oil, a fluorosilicone oil, and a fluoroalkyl ether.
- the method for producing a lubricating oil composition of one embodiment of the present invention is not particularly limited, but from the viewpoint of productivity, the method preferably has a step of adding the components (B) and (C), and if needed, the component (D) and the aforementioned various additives other than the components (B) to (D), to the component (A).
- the kinematic viscosity of the lubricating oil composition of one embodiment of the present invention at 100°C is preferably 2.1 mm 2 /s or more, more preferably 2.2 mm 2 /s or more, more preferably 2.4 mm 2 /s or more, still more preferably 2.5 mm 2 /s or more, still much more preferably 2.7 mm 2 /s or more, and particularly preferably 2.8 mm 2 /s or more, and from the viewpoint of obtaining a lubricating oil composition having excellent cooling properties, it is preferably less than 5.0 mm 2 /s, more preferably 4.8 mm 2 /s or less, more preferably 4.5 mm 2 /s or less, more preferably 4.2 mm 2 /s or less, still more preferably 4.1 mm 2 /s or less, still more preferably 3.9 mm 2 /
- the viscosity index of the lubricating oil composition of one embodiment of the present invention is preferably 80 or more, more preferably 90 or more, still more preferably 100 or more, still much more preferably 110 or more, and particularly preferably 117 or more.
- a load stage that is measured under the conditions described in Examples described later in accordance with ASTM D5182 when scuffing has occurred is preferably 5 or more, more preferably 6 or more, still more preferably 7 or more, and still much more preferably 8 or more.
- an elution amount of copper for the lubricating oil composition is preferably less than 15 ppm by mass, more preferably 14 ppm by mass or less, still more preferably 13 ppm by mass or less, still much more preferably 12 ppm by mass or less, and particularly preferably 11 ppm by mass or less.
- the elution amount of copper means a value measured in accordance with JPI-5S-38-92.
- a 100°C kinematic viscosity increase ratio of the lubricating oil composition after an oxidation stability test compared with that before the test, wherein the oxidation stability test is carried out at 160°C for 192 hours in accordance with CEC L-48-A-00 (B) as described in Examples described later is preferably less than 12%, more preferably 10% or less, more preferably 9% or less, still more preferably 8% or less, still more preferably 7% or less, still much more preferably 6% or less, and particularly preferably 5% or less.
- a volume resistivity of the lubricating oil composition is preferably 1.7 ⁇ 10 7 ⁇ m or more, more preferably 1.9 ⁇ 10 7 ⁇ m or more, more preferably 2.0 ⁇ 10 7 ⁇ m or more, still more preferably 2.2 ⁇ 10 7 ⁇ m or more, still more preferably 2.3 ⁇ 10 7 ⁇ m or more, still much more preferably 2.5 ⁇ 10 7 ⁇ m or more, and particularly preferably 2.7 ⁇ 10 7 ⁇ m or more, and is usually 1.0 ⁇ 10 9 ⁇ m or less.
- the lubricating oil composition of one preferred embodiment of the present invention can be improved in characteristics of scuffing resistance, copper elution suppressing effect, oxidation stability, insulation properties, etc. in a balanced manner. Particularly, the lubricating oil composition of one preferred embodiment of the present invention can favorably maintain these characteristics even if its viscosity is lowered, and therefore, it is also excellent in cooling properties.
- the lubricating oil composition of one embodiment of the present invention can be preferably used for lubrication in mechanisms, such as a torque converter, a wet clutch, a gear bearing mechanism, an oil pump and a hydraulic control mechanism, which are incorporated in various apparatuses, such as an engine, a transmission, a speed reducer, a compressor and a hydraulic system.
- the lubricating oil composition of one embodiment of the present invention is preferably used for lubrication of a speed reducer among these.
- the present invention can also provide the following [1] and [2] .
- the kinematic viscosity and viscosity index were measured and calculated in accordance with JIS K2283:2000.
- the content was measured in accordance with JIS K2609.
- the content was measured in accordance with JIS K2541-6:2013.
- a base oil and various additives of types shown in Table 1 were added and mixed in amounts shown in Table 1, thereby preparing each lubricating oil composition. Details of each component used in the preparation of the lubricating oil composition are as follows. In any of the lubricating oil compositions, the content of molybdenum atoms was less than 2 ppm by mass.
- Phosphorus atom content 10 mass%
- sulfur atom content 10.7 mass%.
- Non-modified polybutenyl bis-succinimide polybutenyl bis-succinimide having polybutenyl group, nitrogen atom content: 1.8 mass%.
- additive mixture mixture of pour point depressant, antioxidant, metal-based detergent, dispersant, metal deactivator, friction modifier and antifoaming agent.
- a load was stepwise increased based on the regulations using an A10 type gear under the conditions of a sample oil temperature of 90°C, a rotational speed of 2900 rpm and an operating time of about 7.5 minutes in accordance with ASTM D5182, and when scuffing occurred, a stage of the load was determined. It can be said that the larger the value of the stage is, the better the gear scuffing resistance of the lubricating oil composition becomes.
- ISOT test in accordance with JIS K2514 was carried out at a temperature of 150°C for 72 hours to degrade a sample oil.
- an elution amount of copper (unit: ppm by mass) was measured by the method in accordance with JPI-5S-38-92. It can be said that the smaller the value of the elution amount of copper is, the higher the copper elution suppressing effect of the lubricating oil composition becomes.
- [100°C Kinematic viscosity increase ratio (%) ] ([100°C kinematic viscosity of lubricating oil composition after test (mm 2 /s) ] - [100°C kinematic viscosity of lubricating oil composition before test (mm 2 /s) ] ) / [100°C kinematic viscosity of lubricating oil composition before test (mm 2 /s) ] ⁇ 100
- a volume resistivity of a sample oil was measured under the test conditions of a measurement temperature of 80°C, an applied voltage of 250 V, and a measurement time of 1 minute in accordance with JIS C2101. It can be said that the larger the value of the volume resistivity is, the better the insulation properties of the lubricating oil composition become.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021111291A JP2023008046A (ja) | 2021-07-05 | 2021-07-05 | 潤滑油組成物 |
| PCT/JP2022/025869 WO2023282134A1 (fr) | 2021-07-05 | 2022-06-29 | Composition lubrifiante |
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| Publication Number | Publication Date |
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| EP4368688A1 true EP4368688A1 (fr) | 2024-05-15 |
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| EP22837550.7A Pending EP4368688A1 (fr) | 2021-07-05 | 2022-06-29 | Composition lubrifiante |
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| EP (1) | EP4368688A1 (fr) |
| JP (1) | JP2023008046A (fr) |
| CN (1) | CN117413041A (fr) |
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| JP5717481B2 (ja) | 2011-03-16 | 2015-05-13 | Ｊｘ日鉱日石エネルギー株式会社 | ギヤ油組成物 |
| JP5988891B2 (ja) * | 2013-02-19 | 2016-09-07 | Ｊｘエネルギー株式会社 | 変速機用潤滑油組成物 |
| JP6807288B2 (ja) * | 2017-08-28 | 2021-01-06 | Ｅｎｅｏｓ株式会社 | 手動変速機用潤滑油組成物 |
| JPWO2019177125A1 (ja) * | 2018-03-14 | 2021-02-25 | 出光興産株式会社 | 潤滑油組成物 |
| JP2020090558A (ja) * | 2018-12-03 | 2020-06-11 | Ｅｍｇルブリカンツ合同会社 | 潤滑油組成物 |
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| WO2023282134A1 (fr) | 2023-01-12 |
| JP2023008046A (ja) | 2023-01-19 |
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