WO2022138523A1 - Lubricant composition - Google Patents
Lubricant composition Download PDFInfo
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- WO2022138523A1 WO2022138523A1 PCT/JP2021/046905 JP2021046905W WO2022138523A1 WO 2022138523 A1 WO2022138523 A1 WO 2022138523A1 JP 2021046905 W JP2021046905 W JP 2021046905W WO 2022138523 A1 WO2022138523 A1 WO 2022138523A1
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- WO
- WIPO (PCT)
- Prior art keywords
- lubricating oil
- oil composition
- mass
- less
- group
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims abstract description 200
- 239000000314 lubricant Substances 0.000 title abstract 4
- -1 thiadiazole compound Chemical class 0.000 claims abstract description 64
- 239000002199 base oil Substances 0.000 claims abstract description 21
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000010687 lubricating oil Substances 0.000 claims description 194
- 125000000217 alkyl group Chemical group 0.000 claims description 52
- 125000004432 carbon atom Chemical group C* 0.000 claims description 49
- 150000001875 compounds Chemical class 0.000 claims description 46
- 239000003921 oil Substances 0.000 claims description 25
- 229910052717 sulfur Inorganic materials 0.000 claims description 24
- 125000004434 sulfur atom Chemical group 0.000 claims description 21
- 239000002480 mineral oil Substances 0.000 claims description 15
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 15
- 229910052698 phosphorus Inorganic materials 0.000 claims description 14
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 150000008301 phosphite esters Chemical class 0.000 claims description 9
- 150000002148 esters Chemical class 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000011574 phosphorus Substances 0.000 claims description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 6
- 230000001050 lubricating effect Effects 0.000 claims description 4
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical compound [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 claims description 3
- 239000008186 active pharmaceutical agent Substances 0.000 claims 1
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 21
- 239000002184 metal Substances 0.000 description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 17
- 229910052802 copper Inorganic materials 0.000 description 17
- 239000010949 copper Substances 0.000 description 17
- 238000001816 cooling Methods 0.000 description 15
- 125000003342 alkenyl group Chemical group 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 239000000654 additive Substances 0.000 description 12
- 125000002947 alkylene group Chemical group 0.000 description 10
- 239000003963 antioxidant agent Substances 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 10
- 238000010828 elution Methods 0.000 description 10
- 235000010446 mineral oil Nutrition 0.000 description 10
- 230000007246 mechanism Effects 0.000 description 9
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 8
- 230000003078 antioxidant effect Effects 0.000 description 8
- 125000003118 aryl group Chemical group 0.000 description 8
- 239000002585 base Substances 0.000 description 8
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 8
- 239000003599 detergent Substances 0.000 description 7
- 229910052791 calcium Inorganic materials 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 125000004437 phosphorous atom Chemical group 0.000 description 6
- 229920013639 polyalphaolefin Polymers 0.000 description 6
- 241001226615 Asphodelus albus Species 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 5
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 230000002378 acidificating effect Effects 0.000 description 5
- 239000002518 antifoaming agent Substances 0.000 description 5
- 235000014113 dietary fatty acids Nutrition 0.000 description 5
- 239000002270 dispersing agent Substances 0.000 description 5
- 229930195729 fatty acid Natural products 0.000 description 5
- 239000000194 fatty acid Substances 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 125000004433 nitrogen atom Chemical group N* 0.000 description 5
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 5
- 239000004711 α-olefin Substances 0.000 description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 4
- 239000012459 cleaning agent Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 150000002430 hydrocarbons Chemical group 0.000 description 4
- 230000000415 inactivating effect Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 125000000962 organic group Chemical group 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005536 corrosion prevention Methods 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 229910052750 molybdenum Inorganic materials 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
- 239000002904 solvent Substances 0.000 description 3
- 239000011593 sulfur Substances 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
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-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
- 230000000996 additive 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
- 125000004429 atom Chemical group 0.000 description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 2
- 239000012964 benzotriazole Substances 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 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
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion 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
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 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
- 150000004665 fatty acids Chemical class 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
- 230000001771 impaired effect Effects 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000009413 insulation Methods 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
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011733 molybdenum Substances 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
- 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
- 239000002530 phenolic antioxidant Substances 0.000 description 2
- 229920000193 polymethacrylate Polymers 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
- 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
- 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
- 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
- ZFOMEJJNWNWWIB-UHFFFAOYSA-N 2,5-bis(octyldisulfanyl)-1,3,4-thiadiazole Chemical compound CCCCCCCCSSC1=NN=C(SSCCCCCCCC)S1 ZFOMEJJNWNWWIB-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
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Chemical class 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-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
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 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
- 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
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 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
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 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
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 150000001639 boron compounds Chemical class 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
- 229920001577 copolymer Polymers 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
- 239000013530 defoamer Substances 0.000 description 1
- KZNICNPSHKQLFF-UHFFFAOYSA-N dihydromaleimide Natural products O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 1
- 238000007865 diluting 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
- 238000004821 distillation Methods 0.000 description 1
- 239000010696 ester oil Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003879 lubricant additive 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
- 239000006078 metal deactivator Substances 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
- 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
- 238000011056 performance test Methods 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
- 239000010452 phosphate Substances 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
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 229920013636 polyphenyl ether polymer Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003449 preventive effect Effects 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
- 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
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 229960002317 succinimide Drugs 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000010998 test method Methods 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
- 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
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/32—Heterocyclic sulfur, selenium or tellurium compounds
- C10M135/36—Heterocyclic sulfur, selenium or tellurium compounds the ring containing sulfur and carbon with nitrogen or oxygen
-
- 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
- C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
-
- 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
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/02—Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
-
- 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
- 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
-
- 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
-
- 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
- C10M2203/003—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions 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
- 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
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/003—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms 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
- 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
- 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
- C10N2030/12—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
- 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
- C10N2040/14—Electric or magnetic purposes
- C10N2040/16—Dielectric; Insulating oil or insulators
Definitions
- the present invention relates to a lubricating oil composition, the use of a lubricating oil composition, and a method for producing a lubricating oil composition.
- Patent Document 1 describes a low-viscosity mineral oil-based lubricating oil base oil and a high-viscosity solvent-refined mineral oil for the purpose of providing a gear oil composition having both fuel-saving performance and sufficient durability such as gears and bearings.
- a gear oil composition is disclosed in which zinc dialkyldithiophosphate and an alkaline earth metal-based cleaning agent are blended in a predetermined blending amount with a base oil in which a system lubricating oil is blended in a predetermined ratio.
- a lubricating oil composition used in various devices such as an electric motor may be required to have characteristics such as cooling property and scuffing resistance depending on the mode of the device as well as insulating property. That is, there is a demand for a new lubricating oil composition having characteristics suitable for lubrication (for example, cooling property, scuffing resistance, insulating property, etc.) according to various mechanisms incorporated in the apparatus.
- the present invention provides a lubricating oil composition containing a base oil and a thiadiazole-based compound, having an olefin sulfide content of less than a predetermined value, and having an kinematic viscosity at 100 ° C. adjusted to a specific range.
- the lubricating oil composition according to the following aspects [1] to [12] the use of the lubricating oil composition according to the following aspect [13], and the lubricating oil composition according to the following aspect [14].
- the content of the olefin sulfide is less than 0.20% by mass based on the total amount of the lubricating oil composition.
- the branched chain alkyl group contained in the component (B1) has 5 or more carbon atoms.
- the lubricating oil composition according to any one of [5].
- Ra 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.
- [7] The description according to any one of [1] to [6] above, wherein the content of the component (B) is 0.01 to 3.0% by mass based on the total amount of the lubricating oil composition.
- Lubricating oil composition [8] The description according to any one of [1] to [6] above, wherein the content of the component (B) is 0.10 to 1.0% by mass based on the total amount of the lubricating oil composition.
- Lubricating oil composition The description according to any one of [1] to [6] above, wherein the content of the component (B) is 0.10 to 1.0% by mass based on the total amount of the lubricating oil composition.
- the component (C) contains one or more sulfur phosphorus-based compounds (C1) selected from a sulfur atom-containing phosphoric acid ester and a sulfur atom-containing subphosphate ester. thing.
- the lubricating oil composition of one preferred embodiment of the present invention is a lubricating oil composition having properties suitable for various mechanisms incorporated in the apparatus, and the lubricating oil composition of a more preferred embodiment is cooling property. It is possible to improve scuffing resistance and insulation in a well-balanced manner. Therefore, these lubricating oil compositions can be suitably used for lubrication of speed reducers and the like.
- the upper limit value and the lower limit value can be arbitrarily combined.
- the 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 the present specification. It is included in the numerical range.
- the numerical range is described as "preferably 30 or more, more preferably 40 or more, preferably 100 or less, more preferably 80 or less”
- the range and the range of "40-100” are also included in the numerical range described herein.
- the description of "60 to 100” means that the range is "60 or more and 100 or less”.
- kinematic viscosity and the viscosity index mean the values measured or calculated in accordance with JIS K2283: 2000.
- the lubricating oil composition of one aspect of the present invention contains a base oil (A) (hereinafter, also referred to as “component (A)”) and a thiadiazole-based compound (hereinafter, also referred to as “component (B)”), and is described below. Satisfy requirements (I) and (II).
- -Requirement (I) The content of the olefin sulfide is less than 0.20% by mass based on the total amount (100% by mass) of the lubricating oil composition.
- -Requirement (II) The kinematic viscosity of the lubricating oil composition at 100 ° C. is 2.1 mm 2 / s or more and less than 5.0 mm 2 / s.
- the lubricating oil composition having excellent cooling properties can be suitably used for cooling a device that generates heat, such as an electric motor or a generator.
- the lubricating oil composition having a low kinematic viscosity is liable to cause local surface damage due to solid phase adhesion that occurs on a slip contact surface such as a tooth surface called scuffing, and a decrease in volume resistivity is also observed, resulting in insulating properties. Also causes problems.
- the lubricating oil composition according to one aspect of the present invention can be a lubricating oil composition having improved cooling property, scuffing resistance, and insulating property in a well-balanced manner.
- Examples of the olefin sulfide specified in the requirement (I) include compounds represented by the following general formula (i).
- R- (S) q -R'(i) In the above formula (i), 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, and q is 1 to 10 carbon atoms. Is an integer of.
- the content of the olefin sulfide is less than 0.20% by mass based on the total amount (100% by mass) of the lubricating oil composition, but the scuffing resistance is further improved and the scuffing resistance is further improved. From the viewpoint of obtaining a lubricating oil composition having good copper corrosion resistance, it is preferably less than 0.18% by mass, more preferably less than 0.15% by mass, still more preferably less than 0.12% by mass, still more preferably.
- the kinematic viscosity of the lubricating oil composition at 100 ° C. is 2.1 mm 2 / s or more, but the insulating property is further improved, the flash point is low, and the handleability is excellent. From the viewpoint of making a lubricating oil composition, it is 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 more preferably 2.7 mm 2 / s.
- the kinematic viscosity of the lubricating oil composition at 100 ° C. is less than 5.0 mm 2 / s, but is preferably 4.8 mm 2 / s or less from the viewpoint of obtaining a lubricating oil composition with further improved cooling performance.
- 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 / s or less, still more preferably 3 .7 mm 2 / s or less, more preferably 3.5 mm 2 / s or less, particularly preferably 3.2 mm 2 / s or less, and further 3.0 mm 2 / s or less, 2.8 mm 2 / s or less, Alternatively, it may be 2.6 mm 2 / s or less.
- the lubricating oil composition according to one aspect of the present invention is one or more phosphorus-based compounds (C) further selected from a phosphoric acid ester and a phosphite ester from the viewpoint of making a lubricating oil composition having further improved wear resistance. ) (Hereinafter, also referred to as "component (C)”) is preferably contained. Further, the lubricating oil composition according to one aspect of the present invention may further contain various additives other than the components (B) to (C), if necessary, as long as the effects of the present invention are not impaired.
- the total content of the components (A) and (B) is preferably 50% by mass or more, more preferably 50% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition.
- 100% by mass or less 99.5% by mass or less, 99.0% by mass or less, 98.5% by mass or less, 98.0% by mass or less, 97.5% by mass or less, 97.0% by mass. % Or less, 96.5% by mass or less, or 96.0% by mass or less.
- the total content of the components (A), (B) and (C) is preferably 52% by mass based on the total amount (100% by mass) of the lubricating oil composition.
- Base oil examples of the base oil as the component (A) used in one aspect of the present invention include one or more selected from mineral oils and synthetic oils.
- mineral oil for example, normal pressure residual oil obtained by atmospheric distillation of crude oil such as paraffin crude oil, intermediate base crude oil, and naphthenic crude oil; and distillate oil obtained by vacuum distillation of these normal pressure residual oils.
- a refined oil obtained by subjecting the distillate oil to one or more refining treatments such as solvent removal, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, and hydrorefining (hydrocracking); And so on.
- Examples of the synthetic oil include poly such as an ⁇ -olefin homopolymer or an ⁇ -olefin copolymer (for example, an ⁇ -olefin copolymer having 8 to 14 carbon atoms such as an ethylene- ⁇ -olefin copolymer).
- Examples thereof include synthetic oil (GTL) obtained by isomerizing the produced wax (GTL wax (Gas To Liquids WAX)).
- the component (A) used in one embodiment of the present invention preferably contains mineral oils classified into Group II and Group III of the API (American Petroleum Institute) base oil category, and one or more selected from synthetic oils. It is more preferable to contain one or more selected from mineral oils classified into Group III and synthetic oils.
- API American Petroleum Institute
- the kinematic viscosity of the component (A) used in one aspect of the present invention at 100 ° C. is preferably 1.9 mm 2 / s or more, more preferably 2 0.0 mm 2 / s or more, more preferably 2.1 mm 2 / s or more, still more preferably 2.3 mm 2 / s or more, still more preferably 2.5 mm 2 / s or more, particularly preferably 2.7 mm 2 / s.
- the kinematic viscosity of the component (A) at 100 ° C. 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.
- mm 2 / s or less and further 3.7 mm 2 / s or less, 3.6 mm 2 / s or less, 3.5 mm 2 / s or less, 3.4 mm 2 / s or less, 3.3 mm 2 / s or less, 3.2 mm It may be 2 / s or less, 3.0 mm 2 / s or less, 2.8 mm 2 / s or less, or 2.6 mm 2 / s or less.
- the viscosity index of the component (A) used in one aspect of the present invention is preferably 70 or more, more preferably 80 or more, still more preferably 90 or more, still more preferably 100 or more.
- the kinematic viscosity and the viscosity index of the mixed oil are preferably in the above ranges. Therefore, the low-viscosity base oil and the high-viscosity base oil may be used in combination to prepare the mixed oil so as to have the kinematic viscosity and viscosity index in the above range.
- the content of the component (A) is preferably 45% 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 55% by mass or more, further preferably 60% by mass or more, particularly preferably 65% by mass or more, further 70% by mass or more, 75% by mass or more, 80% by mass or more, 85% by mass or more, It may be 90% by mass or more, or 92% by mass or more, preferably 99.99% by mass or less, more preferably 99.90% by mass or less, still more preferably 99.50% by mass or less, still more preferably 99.
- .00% by mass or less particularly preferably 98.50% by mass or less, and further 98.00% by mass or less, 97.50% by mass or less, 97.00% by mass or less, 96.50% by mass or less, or 96. It may be 0.00% by mass or less.
- the thiadiazole-based compound which is the component (B) used in one aspect of the present invention may be a compound having a thiadiazole ring, but from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance, the following general formula is used. It is preferable to contain the compound represented by any of (b-1) to (b-4), and it is more preferable to contain at least the compound represented by the following general formula (b-1).
- the component (B) may be used alone or in combination of two or more.
- R 1 and R 2 are each independently a hydrocarbon group.
- m and n are independently integers of 1 to 10, they are preferably integers of 1 to 6, more preferably 1 to 4, from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance.
- the hydrocarbon groups that can be selected as R 1 and R 2 include, for example, methyl group, ethyl group, propyl group (n-propyl group, isopropyl group), butyl group (n-butyl group, s-butyl group, etc.).
- t-Butyl group (isobutyl group), pentyl group, hexyl group, heptyl group, octyl group, 2-ethylhexyl group, nonyl group, 1,1-dimethylheptyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl Linear or branched alkyl group such as group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group; ethenyl group, propenyl group, butenyl group, pentenyl group, hexenyl group, heptenyl group, octenyl group, nonenyl group, Linear or branched alkyl groups such as decenyl group, undecenyl group, dodecenyl group, tridecenyl
- the carbon number of the hydrocarbon group which can be selected as R 1 and R 2 , is preferably 1 or more, more preferably 2 or more, still more preferably 2 or more, from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance. 3 or more, more preferably 5 or more, further 7 or more, 8 or more, or 9 or more, preferably 30 or less, more preferably 24 or less, more preferably 20 or less, more preferably 18 Below, it may be more preferably 16 or less, still more preferably 14 or less, still more preferably 12 or less, and further preferably 11 or less, or 10 or less.
- R 1 and R 2 are preferably alkyl groups from the viewpoint of independently forming a lubricating oil composition having further improved scuffing resistance, and have scuffing resistance and copper corrosion resistance.
- a branched-chain alkyl group is more preferable, and a branched-chain alkyl group having 5 or more carbon atoms is further preferable, from the viewpoint of obtaining a lubricating oil composition capable of effectively suppressing elution of copper by improving the above.
- the number of carbon atoms of the branched chain alkyl group is preferably 5 or more, more preferably 7 or more, still more preferably 8 or more, still more preferably 9 or more, and preferably 30 or less. It may be 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, still more preferably 12 or less, still 11 or less, or 10 or less.
- the lubricating oil composition of one aspect of the present invention it is represented by any of the above general formulas (b-1) to (b-4) from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance.
- the total content ratio of the compound is preferably 60 to 100% by mass, more preferably 70 to 100% by mass, still more preferably 80, based on the total amount (100% by mass) of the component (B) contained in the lubricating oil composition. It is -100% by mass, more preferably 90 to 100% by mass, and particularly preferably 95 to 100% by mass.
- the content ratio of the compound represented by the general formula (b-1) is the total mass (100) of the component (B) contained in the lubricating oil composition.
- mass preferably 50 to 100% by mass, more preferably 60 to 100% by mass, still more preferably 70 to 100% by mass, still more preferably 80 to 100% by mass, and particularly preferably 90 to 100% by mass.
- the content ratio of the compound represented by the following general formula (bx) is the total amount (100% by mass) of the component (B) contained in the lubricating oil composition. ) By reference, it is preferably less than 10% by mass, more preferably less than 8% by mass, still more preferably less than 5% by mass, still more preferably less than 3% by mass, and particularly preferably less than 1% by mass.
- Ra 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) is a component (B) from the viewpoint of making a lubricating oil composition capable of improving copper corrosion prevention as well as scuffing resistance and effectively suppressing elution of copper. It is preferable to contain a thiadiazol-based compound (B1) having a branched chain alkyl group (hereinafter, also referred to as “component (B1)”).
- component (B1) a thiadiazol-based compound having a branched chain alkyl group
- the content ratio of the component (B1) is preferably 50 to 100% by mass, more preferably 60 to 100% by mass, based on the total amount (100% by mass) of the component (B) contained in the lubricating oil composition. %, More preferably 70 to 100% by mass, still more preferably 80 to 100% by mass, still more preferably 90 to 100% by mass, and particularly preferably 95 to 100% by mass.
- the number of carbon atoms of the branched chain alkyl group contained in the component (B1) is preferably 5 from the viewpoint of providing a lubricating oil composition capable of improving copper corrosion prevention and effectively suppressing copper elution as well as scuffing resistance.
- the above is more preferably 7 or more, still more preferably 8 or more, still more preferably 9 or more, still preferably 30 or less, more preferably 24 or less, more preferably 20 or less, still more preferably 18 or less, still more preferable.
- the components (B1) are represented by the general formulas (b-1) to (b-). It is preferably represented by any of 4), and R 1 and R 2 in each formula are preferably compounds which are independently branched chain alkyl groups, and are represented by the above general formula (b-1). It is more preferable that R 1 and R 2 in the formula are each independently a compound which is a branched chain alkyl group.
- the preferred range of the number of carbon atoms of the branched chain alkyl group is as described above.
- the content of the component (B) is the total amount (100% by mass) of the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance.
- it is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, further preferably 0.07% by mass or more, still more preferably 0.10% by mass or more, and particularly preferably 0.15% by mass. % Or more, and further, 0.17% by mass or more, 0.20% by mass or more, 0.23% by mass or more, 0.25% by mass or more, 0.27% by mass or more, 0.30% by mass or more, 0.
- It may be .32% by mass or more, 0.35% by mass or more, or 0.37% by mass or more, preferably 3.0% by mass or less, more preferably 2.5% by mass or less, still more preferably 2. 0% by mass or less, more preferably 1.5% by mass or less, particularly preferably 1.2% by mass or less, and further 1.0% by mass or less, 0.95% by mass or less, 0.90% by mass or less. , 0.85% by mass or less, 0.80% by mass or less, 0.75% by mass or less, 0.70% by mass or less, 0.65% by mass or less, 0.60% by mass or less, 0.55% by mass or less, Alternatively, it may be 0.50% by mass or less.
- the content of the component (B) is 0.01 to 3.0% by mass, 0.05 to 2.5% by mass, 0.07 to 0.07 to 30% by mass based on the total amount (100% by mass) of the lubricating oil composition. It is 2.0% by mass, 0.10 to 1.5% by mass, 0.10 to 1.2% by mass or less, 0.10 to 1.0% by mass, or 0.15 to 1.0% by mass.
- the content of the component (B) in terms of sulfur atom is the total mass of the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance.
- a (100% by mass) basis it is preferably 30% by mass or more, more preferably 50% by mass or more, further preferably 100% by mass or more, still more preferably 200% by mass or more, and particularly preferably 300% by mass or more.
- it may be 400 mass ppm or more, 500 mass ppm or more, 600 mass ppm or more, 700 mass ppm or more, 800 mass ppm or more, 900 mass ppm or more, 1000 mass ppm or more, 1050 mass ppm or more, or 1100 mass ppm or more. Further, it is preferably 10000 mass ppm or less, more preferably 8000 mass ppm or less, further preferably 7000 mass ppm or less, still more preferably 6000 mass ppm or less, particularly preferably 5000 mass ppm or less, and further 4500 mass ppm or less.
- the content of the component (B) in terms of nitrogen atom is the total mass of the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance.
- the content of the component (B) in terms of nitrogen atom is the total mass of the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance.
- On a (100% by mass) basis it is preferably 10% by mass or more, more preferably 30% by mass or more, further preferably 50% by mass or more, still more preferably 70% by mass or more, and particularly preferably 100% by mass or more.
- it may be 120 mass ppm or more, 130 mass ppm or more, 140 mass ppm or more, 150 mass ppm or more, 160 mass ppm or more, 170 mass ppm or more, 180 mass ppm or more, 190 mass ppm or more, or 200 mass ppm or more. Further, it is preferably 2000 mass ppm or less, more preferably 1800 mass ppm or less, further preferably 1500 mass ppm or less, still more preferably 1200 mass ppm or less, particularly preferably 1000 mass ppm or less, and further preferably 900 mass ppm or less.
- the content of a nitrogen atom means a value measured according to JIS K2609.
- the lubricating oil composition according to one aspect of the present invention is one or more phosphorus-based compounds (C) further selected from a phosphoric acid ester and a phosphite ester from the viewpoint of making a lubricating oil composition having further improved wear resistance. ) Is preferably contained.
- the phosphoric acid ester contained as the component (C) in one aspect of the present invention is, for example, a neutral phosphoric acid ester represented by the following general formula (c-1), and the following general formula (c-2) or ( Examples thereof include the acidic phosphoric acid ester represented by c-3).
- examples of the phosphite ester contained as the component (C) in one aspect of the present invention include acidic phosphite esters represented by the following general formula (c-4) or (c-5).
- RA may be independently substituted with an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, and an alkyl group having 1 to 6 carbon atoms, respectively, with 6 to 18 carbon atoms. Examples thereof include an aryl group and a group having a sulfide bond.
- the plurality of RAs may be the same or different from each other.
- alkyl group that can be selected as RA examples include a methyl group, an ethyl group, a propyl group (n-propyl group, isopropyl group), and a butyl group (n-butyl group, s-butyl group, t-butyl group).
- alkyl groups may be linear alkyl groups or branched chain alkyl groups.
- the alkyl group has 1 to 30 carbon atoms, preferably 3 to 20, more preferably 5 to 16, still more preferably 6 to 14, and even more preferably 8 to 12.
- alkenyl group examples 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 and a dodecenyl group. Examples thereof include a tridecenyl group, a tetradecenyl group, a pentadecenyl group, a hexadecenyl group, an octadecenyl group and the like. These alkenyl groups may be linear alkenyl groups or branched chain alkenyl groups.
- the alkenyl group has 2 to 20 carbon atoms, preferably 3 to 16 carbon atoms, and more preferably 6 to 12 carbon atoms.
- Examples of the aryl group that can be selected as RA 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, and a phenyl group is preferable.
- Examples of the "alkyl group having 1 to 6 carbon atoms" that can be substituted with these aryl groups include the above-mentioned alkyl groups having 1 to 6 carbon atoms.
- RA01 is a hydrogen atom or a monovalent organic group having 1 to 20 carbon atoms.
- RA02 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 more preferably 1 or 2, and particularly preferably 1. * Indicates the bond position.
- Examples of the monovalent organic group that can be selected as RA01 include an alkyl group, an alkenyl group, an aryl group and the like, and an alkyl group having 1 to 20 carbon atoms or an alkyl group having 1 to 20 carbon atoms (preferably).
- At least one -CH 2 -structure of an alkyl group of 2-18, more preferably 4-16, even more preferably 6-12, even more preferably 8-10) is -O-, -S-, -COO.
- the alkyl group that can be selected as RA01 may be a linear alkyl group or a branched chain alkyl group, but a linear alkyl group is preferable.
- the alkyl group has 1 to 20 carbon atoms, preferably 2 to 18, more preferably 4 to 16, still more preferably 6 to 12, and even more preferably 8 to 10.
- Examples of the divalent organic group that can be selected as RA02 include an alkylene group having 1 to 20 carbon atoms, a cycloalkylene group, an alkenylene group having 1 to 20 carbon atoms, a cycloalkenylene group, an arylene group and the like. , At least one -CH 2 -structure of an alkylene group having 1 to 20 carbon atoms or an alkylene group having 1 to 20 carbon atoms (preferably 2 to 12, more preferably 2 to 8, still more preferably 2 to 4).
- Is preferably a group substituted with -O-, -S-, -COO-, -OCO-, -CSO-, -OCS-, -CH CH- or -C ⁇ C-, and has a carbon number of carbon. More preferably, 2 to 20 alkylene groups.
- the alkylene group that can be selected as RA02 may be a linear alkylene group or a branched chain alkylene group, but a linear alkylene group is preferable.
- the alkylene group has 1 to 20 carbon atoms, preferably 1 to 12, more preferably 1 to 8, still more preferably 1 to 4, still more preferably 1, 2 or 4, and particularly preferably. It is 2.
- the component (C) is composed of a sulfur atom-containing phosphoric acid ester and a sulfur atom-containing subphosphate ester. It is preferable to contain one or more selected sulfur phosphorus-based compounds (C1).
- the content ratio of the component (C1) is the component (C) contained in the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved wear resistance.
- the sulfur atom-containing phosphoric acid ester and the sulfur atom-containing subphosphate ester include a sulfur atom-containing phosphoric acid ester having a group represented by the above formula (ii) and a sulfur atom-containing subphosphate ester.
- the component (C1) used in one embodiment of the present invention is a sulfur atom-containing phosphite ester having a group represented by the above formula (ii). It is preferable that one or more of the compound (C11) represented by the following general formula (c-11) and the compound (C12) represented by the following general formula (c-12) are selected.
- RA11 , RA21 and RA22 are each independently a hydrogen atom or an alkyl group having 1 to 20 carbon atoms.
- the alkyl group may be a linear alkyl group or a branched chain alkyl group, but is preferably a straight chain alkyl group.
- the alkyl group has 1 to 20 carbon atoms, preferably 2 to 18, more preferably 4 to 16, still more preferably 6 to 12, and even more preferably 8 to 10.
- a1, a2, and a3 are independently integers of 1 to 20, but preferably an integer of 1 to 12, more preferably an integer of 1 to 8, and even more preferably an integer of 1 to 4. It is preferably 1, 2 or 4, and particularly preferably 2.
- the component (C) is a compound (C11) represented by the general formula (c-11).
- the content ratio of the compound (C11) to the compound (C12) [(C11) / (C12)] is a mass ratio, 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, even more preferably 1/11 to 1/1, particularly preferably 1/10 to 1 / 2.
- the acidic phosphate ester and the acidic subphosphate ester used as the component (C) in one aspect of the present invention may be in the form of an amine salt.
- the amine forming the amine salt is preferably a compound represented by the following general formula (ci).
- the amine may be used alone or in combination of two or more.
- 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 plurality of R x may be the same or different from each other.
- 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 that can be selected as R x include the above-mentioned R 11 to R 13 and R 21 to R 23 .
- the groups exemplified as the alkyl group, the alkenyl group, and the aryl group which can be selected as the above group a group having the number of carbon atoms in the above range can be mentioned.
- hydroxyalkyl group having 6 to 18 carbon atoms examples include a group in which the hydrogen atom of the alkyl group having 6 to 18 carbon atoms is replaced with a hydroxy group, and specifically, a hydroxyhexyl group and a hydroxyoctyl group. , Hydroxydodecyl group, hydroxytridecyl group and the like.
- the content of the component (C) is the total amount (100% by mass) of the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved wear resistance.
- it is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, further preferably 0.07% by mass or more, still more preferably 0.10% by mass or more, and particularly preferably 0.15% by mass.
- % Or more and further, 0.17% by mass or more, 0.20% by mass or more, 0.23% by mass or more, 0.25% by mass or more, 0.27% by mass or more, or 0.30% by mass or more.
- the content of the component (C) in terms of phosphorus atom is the total mass of the lubricating oil composition. Based on (100% by mass), it is preferably 30% by mass or more, more preferably 50% by mass or more, more preferably 70% by mass or more, still more preferably 100% by mass or more, still more preferably 120% by mass or more, still more preferably. It is 150% by mass or more, more preferably 180% by mass or more, still more preferably 200% by mass or more, still more preferably 220% by mass or more, still more preferably 250% by mass or more, and particularly preferably 270% by mass or more.
- the content of a phosphorus atom means a value measured according to JPI-5S-38-92.
- the content of the component (C) in terms of sulfur atom is the total amount of the lubricating oil composition.
- it is preferably 50 mass ppm or more, more preferably 70 mass ppm or more, more preferably 100 mass ppm or more, more preferably 120 mass ppm or more, still more preferably 150 mass ppm or more, still more preferably.
- the phosphorus atom content means a value measured according to JPI-5S-38-92.
- the content of the sulfur atom-free acidic phosphoric acid ester in terms of phosphorus atom is less than 100% by mass based on the total amount (100% by mass) of the lubricating oil composition. , Less than 50 mass ppm, less than 10 mass ppm, less than 8 mass ppm, less than 5 mass ppm, less than 3 mass ppm, or less than 1 mass ppm.
- the content of the neutral phosphoric acid ester containing no sulfur atom in terms of phosphorus atom is 50 based on the total amount (100% by mass) of the lubricating oil composition. It may be less than mass ppm, less than 10 mass ppm, less than 8 mass ppm, less than 5 mass ppm, less than 3 mass ppm, or less than 1 mass ppm.
- the lubricating oil composition of one aspect of the present invention may contain various additives other than the components (B) to (C), if necessary, as long as the effects of the present invention are not impaired.
- additives include antioxidants, metal detergents, ashless dispersants, metal deactivating agents, rust inhibitors, defoaming agents, pour point lowering agents and the like. These lubricant additives may be used alone or in combination of two or more.
- each of these additives for lubricating oil can be appropriately adjusted within a range that does not impair the effects of the present invention, but each addition is based on the total amount (100% by mass) of the lubricating oil composition. Independently for each agent, it is usually 0.001 to 15% by mass, preferably 0.005 to 10% by mass, and more preferably 0.01 to 5% by mass.
- the lubricating oil composition of one aspect of the present invention may further contain an antioxidant.
- the antioxidant may be used alone or in combination of two or more.
- examples of the antioxidant used in one embodiment of the present invention include amine-based antioxidants such as alkylated diphenylamine, phenylnaphthylamine, and alkylated phenylnaphthylamine; 2,6-di-t-butylphenol, 4,4'-methylenebis.
- the antioxidant is a combination of an amine-based antioxidant and a phenol-based antioxidant.
- the lubricating oil composition of one aspect of the present invention may further contain a metal-based detergent.
- the metal-based cleaning agent may be used alone or in combination of two or more.
- the metal-based detergent used in one embodiment of the present invention include metal salts such as metal sulfonate, metal salicylate, and metal phenate.
- metal salts such as metal sulfonate, metal salicylate, and metal phenate.
- the metal atom constituting the metal salt a metal atom selected from an alkali metal and an alkaline earth metal is preferable, sodium, calcium, magnesium or barium is more preferable, and calcium is further preferable.
- 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 ratio of calcium sulfonate is preferably 50 to 100% by mass, more preferably 60 to 100% by mass, still more preferably 70, based on the total amount (100% by mass) of the metal-based detergent contained in the lubricating oil composition. It is ⁇ 100% by mass, more preferably 80-100% by mass.
- the base value of the metal-based detergent is preferably 0 to 600 mgKOH / g.
- the metal-based cleaning agent is preferably a hyperbasic metal-based cleaning agent having a base value of 100 mgKOH / g or more.
- the base value of the superbasic metal-based detergent is 100 mgKOH / g or more, preferably 150 to 500 mgKOH / g, and more preferably 200 to 450 mgKOH / g.
- the “base value” is defined as 7. of JIS K2501: 2003 “Petroleum products and lubricating oil-neutralization value test method”. It means the base value by the perchloric acid method measured according to.
- the lubricating oil composition of one aspect of the present invention may further contain an ashless dispersant from the viewpoint of improving the dispersibility of the component (B) and the component (C).
- the ashless dispersant may be used alone or in combination of two or more.
- alkenyl succinate imide is preferable, and for example, alkenyl succinate bisimide represented by the following general formula (d-1) and the following general formula (d-2). Examples thereof include alkenyl succinic acid monoimide represented.
- Ra1, Ra2 , and Ra3 are independently alkenyl groups having a mass average molecular weight (Mw) of 500 to 3000 (preferably 900 to 2500). Is.
- Examples of the alkenyl group that can be selected as R a1 , Ra 2 and Ra 3 include a polybutenyl group, a polyisobutenyl group, an ethylene-propylene copolymer and the like, and among these, a polybutenyl group or a polyisobutenyl group is preferable.
- R b1 , R b2 , and R b3 are independently alkylene groups 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 compound represented by the general formula (d-1) or (d-2) is one or more selected from boron compounds, alcohols, aldehydes, ketones, alkylphenols, cyclic carbonates, epoxy compounds, organic acids and the like. It may be a modified alkenyl succinimide reacted with.
- the lubricating oil composition of one aspect of the present invention may further contain a metal inactivating agent.
- the metal inactivating agent may be used alone or in combination of two or more. Examples of the metal inactivating agent used in one embodiment of the present invention include benzotriazole-based compounds, tolyltriazole-based compounds, imidazole-based compounds, pyrimidine-based compounds and the like.
- the lubricating oil composition of one aspect of the present invention may further contain a rust inhibitor.
- the rust inhibitor 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 sucrose, 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 aspect of the present invention may further contain an antifoaming agent.
- the defoaming agent may be used alone or in combination of two or more.
- Examples of the defoaming agent used in one aspect of the present invention include silicone oil, fluorosilicone oil, fluoroalkyl ether and the like.
- the lubricating oil composition of one aspect of the present invention may further contain a pour point lowering agent.
- the pour point lowering agent may be used alone or in combination of two or more.
- Examples of the pour point lowering agent used in one embodiment of the present invention include ethylene-vinyl acetate copolymer, condensate of chlorinated paraffin and naphthalene, condensate of chlorinated paraffin and phenol, polymethacrylate, and polyalkylstyrene. And so on.
- the method for producing the lubricating oil composition according to one aspect of the present invention is not particularly limited, but from the viewpoint of productivity, there is no particular limitation.
- the component (B) is blended with the component (A), and the content of the olefin sulfide is less than 0.20% by mass based on the total amount of the lubricating oil composition at 100 ° C. of the lubricating oil composition. It is preferable to have a step of adjusting the kinematic viscosity to be 2.1 mm 2 / s or more and less than 5.0 mm 2 / s.
- the component (B) When the component (B) is added to the component (A), it is preferable to add various additives other than the component (C) and the components (B) to (C), if necessary.
- various additives other than the component (C) and the components (B) to (C), if necessary.
- the suitable compounds and blending amounts of the components (A), (B) and (C), and various additives are as described above.
- the viscosity index of the lubricating oil composition according to one aspect of the present invention is preferably 80 or more, more preferably 90 or more, still more preferably 100 or more, still more preferably 110 or more.
- the content of molybdenum atom is less than 100% by mass, less than 50% by mass, and less than 30% by mass based on the total amount (100% by mass) of the lubricating oil composition. , Less than 20% by mass, less than 10% by mass, less than 7% by mass, less than 5% by mass, less than 3% by mass, or less than 2% by mass.
- the molybdenum content means a value measured according to JPI-5S-38-92.
- the flash point of the lubricating oil composition according to one aspect of the present invention is preferably 160 ° C. or higher, more preferably 164 ° C. or higher, still more preferably 170 ° C. or higher, and further, from the viewpoint of obtaining a lubricating oil composition having excellent safety. It is preferably 174 ° C. or higher, particularly preferably 180 ° C. or higher, and may be 300 ° C. or lower, 280 ° C. or lower, 260 ° C. or lower, or 250 ° C. or lower. In this specification, the flash point means a value measured by the Cleveland open method (COC) method in accordance with ASTM D92.
- COC Cleveland open method
- the aniline point of the lubricating oil composition of one aspect of the present invention is preferably 80 to 120 ° C., more preferably 85 to 118 ° C., still more preferably 90 to 115 ° C. from the viewpoint of improving the solubility of the component (B). , More preferably 95 to 112 ° C, and particularly preferably 100 to 110 ° C.
- the aniline point means a value measured according to ASTM D611.
- the lubricating oil composition according to one aspect of the present invention is in accordance with JIS K2242, and as described in Examples described later, a silver rod heated to 200 ° C. is placed in 200 mL of the lubricating oil composition heated to 80 ° C.
- the surface temperature of the silver rod after 12 seconds is preferably 150.0 ° C. or lower, more preferably 149.0 ° C. or lower, still more preferably 148.0 ° C. or lower, still more preferably 147.0 ° C. or lower, particularly preferably. Is 146.0 ° C. or lower.
- the load stage when scuffing is generated which is measured under the conditions described in Examples described later in accordance with ASTM D5182, is preferably 5 or more, more preferably 6.
- the above is more preferably 7 or more, still more preferably 8 or more.
- the volume resistivity of the lubricating oil composition measured under the conditions described in Examples described later in accordance with JIS C2101 is preferably 2.0 ⁇ 107 ⁇ . M or more, more preferably 2.2 ⁇ 10 7 ⁇ ⁇ m or more, further preferably 2.4 ⁇ 10 7 ⁇ ⁇ m or more, still more preferably 2.8 ⁇ 10 7 ⁇ ⁇ m or more, particularly preferably. It is 3.0 ⁇ 10 7 ⁇ ⁇ m or more, and usually 1.0 ⁇ 10 9 ⁇ ⁇ m or less.
- the lubricating oil composition according to one aspect of the present invention is lubricated when an ISOT test based on JIS K2514 is carried out at a temperature of 150 ° C. for 72 hours using a copper piece as a catalyst as described in Examples described later.
- the copper elution amount of the oil composition is preferably 70% by mass or less, more preferably 60% by mass or less, further preferably 50% by mass or less, still more preferably 40% by mass or less, and particularly preferably 35% by mass or less. ..
- the copper elution amount means a value measured according to JPI-5S-38-92.
- the lubricating oil composition of one preferred embodiment of the present invention can improve cooling property, scuffing resistance, and insulating property in a well-balanced manner.
- the lubricating oil composition of one aspect of the present invention is incorporated in various devices such as an engine, a transmission, a speed reducer, a compressor, and a hydraulic device, such as a torque converter and a wet clutch.
- Gear bearing mechanism, oil pump, hydraulic control mechanism and other mechanisms can be suitably used for lubrication.
- the lubricating oil composition according to one aspect of the present invention is preferably used for lubricating the speed reducer.
- the present invention may also provide the following [1] and [2].
- [1] Contains the base oil (A) and the thiadiazole compound (B), the content of olefin sulfide is less than 0.20% by mass, and the kinematic viscosity at 100 ° C. is 2.1 mm 2 / s or more and 5.0 mm. Reducer with lubricating oil composition less than 2 / s.
- [2] Contains the base oil (A) and the thiadiazol-based compound (B), the content of olefin sulfide is less than 0.20% by mass, and the kinematic viscosity at 100 ° C. is 2.1 mm 2 / s or more and 5.0 mm.
- Use of a lubricating oil composition that applies a lubricating oil composition to lubricate a speed reducer, which is less than 2 / s.
- the preferred embodiments of the lubricating oil composition according to the above [1] and [2] are as described above.
- Examples 1-9, Comparative Examples 1-4 The base oils of the types shown in Table 1 and various additives were added and mixed in the blending amounts shown in Tables 1 and 2, respectively, to prepare a lubricating oil composition. Details of each component used in the preparation of the lubricating oil composition are as follows. The content of molybdenum atoms in each of the lubricating oil compositions was less than 2 parts by mass.
- kinematic viscosity 1.8 mm 2 / s.
- the prepared lubricating oil composition was measured or calculated for kinematic viscosity, viscosity index, flash point, and aniline point, and the following tests were performed. These results are shown in Tables 1 and 2.
- Coolability test In accordance with JIS K2242 "6.2 Cooling performance test method (Method A: surface temperature measurement method)", a silver rod heated to 200 ° C. was used as 250 mL of sample oil heated to 80 ° C. After putting it in, the surface temperature of the silver rod was measured 12 seconds later. It can be said that the lower the surface temperature of the silver rod, the better the cooling property of the lubricating oil composition.
- Copper elution test An ISOT test based on JIS K2514 was carried out at a temperature of 150 ° C. for 72 hours using a copper piece and an iron piece as a catalyst to deteriorate the sample oil.
- the copper elution amount (unit: mass ppm) was measured for the deteriorated sample oil by a method according to JPI-5S-38-92. It can be said that the smaller the value of the copper elution amount is, the higher the effect of suppressing copper elution is in the lubricating oil composition.
- the lubricating oil compositions of Examples 1 to 9 had excellent cooling properties, scuffing resistance, and insulating properties in a well-balanced manner, despite their low viscosities.
- the lubricating oil compositions of Comparative Examples 1 and 2 were inferior in scuffing resistance, and the lubricating oil composition of Comparative Example 3 was inferior in insulating property as well as scuffing resistance.
- the lubricating oil composition of Comparative Example 4 had good scuffing resistance, but was inferior in cooling property.
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Abstract
Provided is a lubricant composition containing a base oil (A) and a thiadiazole compound (B), the lubricant composition having: an olefin sulfide content that is less than 0.20 mass% in terms of the total amount of the lubricant composition; and a kinematic viscosity at 100°C of 2.1 or greater but less than 5.0 mm2/s.
Description
本発明は、潤滑油組成物、潤滑油組成物の使用、及び潤滑油組成物の製造方法に関する。
The present invention relates to a lubricating oil composition, the use of a lubricating oil composition, and a method for producing a lubricating oil composition.
エンジン、変速機、減速機、圧縮機、油圧装置等の各種装置は、トルクコンバータ、湿式クラッチ、歯車軸受機構、オイルポンプ、油圧制御機構等の機構を有する。これらの機構においては、潤滑油組成物が用いられており、様々な要求に対応し得る潤滑油組成物が開発されている。
例えば、特許文献１には、省燃費性能と歯車や軸受け等の十分な耐久性を兼ね備えたギヤ油組成物の提供を目的として、低粘度の鉱油系潤滑油基油と高粘度の溶剤精製鉱油系潤滑油とを所定の割合で配合してなる基油に、ジアルキルジチオリン酸亜鉛及びアルカリ土類金属系清浄剤を所定の配合量で配合してなるギヤ油組成物が開示されている。 Various devices such as an engine, a transmission, a speed reducer, a compressor, and a hydraulic device have a mechanism 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 in these mechanisms, and lubricating oil compositions that can meet various demands have been developed.
For example, Patent Document 1 describes a low-viscosity mineral oil-based lubricating oil base oil and a high-viscosity solvent-refined mineral oil for the purpose of providing a gear oil composition having both fuel-saving performance and sufficient durability such as gears and bearings. A gear oil composition is disclosed in which zinc dialkyldithiophosphate and an alkaline earth metal-based cleaning agent are blended in a predetermined blending amount with a base oil in which a system lubricating oil is blended in a predetermined ratio.
例えば、特許文献１には、省燃費性能と歯車や軸受け等の十分な耐久性を兼ね備えたギヤ油組成物の提供を目的として、低粘度の鉱油系潤滑油基油と高粘度の溶剤精製鉱油系潤滑油とを所定の割合で配合してなる基油に、ジアルキルジチオリン酸亜鉛及びアルカリ土類金属系清浄剤を所定の配合量で配合してなるギヤ油組成物が開示されている。 Various devices such as an engine, a transmission, a speed reducer, a compressor, and a hydraulic device have a mechanism 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 in these mechanisms, and lubricating oil compositions that can meet various demands have been developed.
For example, Patent Document 1 describes a low-viscosity mineral oil-based lubricating oil base oil and a high-viscosity solvent-refined mineral oil for the purpose of providing a gear oil composition having both fuel-saving performance and sufficient durability such as gears and bearings. A gear oil composition is disclosed in which zinc dialkyldithiophosphate and an alkaline earth metal-based cleaning agent are blended in a predetermined blending amount with a base oil in which a system lubricating oil is blended in a predetermined ratio.
ところで、例えば、電動モーター等の各種装置に用いられる潤滑油組成物には、絶縁性と共に、その装置の態様によっては、冷却性や耐スカッフィング性等の特性が要求される場合がある。つまり、装置内に組み込まれた各種機構に応じた潤滑に適した特性（例えば、冷却性、耐スカッフィング性、絶縁性等）を有する新たな潤滑油組成物が求められている。
By the way, for example, a lubricating oil composition used in various devices such as an electric motor may be required to have characteristics such as cooling property and scuffing resistance depending on the mode of the device as well as insulating property. That is, there is a demand for a new lubricating oil composition having characteristics suitable for lubrication (for example, cooling property, scuffing resistance, insulating property, etc.) according to various mechanisms incorporated in the apparatus.
本発明は、基油及びチアジアゾール系化合物を含有し、硫化オレフィンの含有量を所定値未満とし、１００℃における動粘度を特定の範囲に調製した潤滑油組成物を提供する。具体的には、下記［１］～［１２］の態様に係る潤滑油組成物、下記［１３］の態様に係る潤滑油組成物の使用、及び下記［１４］の態様に係る潤滑油組成物の製造方法を提供する。
［１］基油（Ａ）及びチアジアゾール系化合物（Ｂ）を含有する潤滑油組成物であって、
硫化オレフィンの含有量が、前記潤滑油組成物の全量基準で、０．２０質量％未満であり、
前記潤滑油組成物の１００℃における動粘度が２．１ｍｍ２／ｓ以上５．０ｍｍ２／ｓ未満である、潤滑油組成物。
［２］成分（Ｂ）が、分岐鎖アルキル基を有するチアジアゾール系化合物（Ｂ１）を含む、上記［１］に記載の潤滑油組成物。
［３］成分（Ｂ１）が有する前記分岐鎖アルキル基の炭素数が５以上である、上記［２］に記載の潤滑油組成物。
［４］成分（Ｂ）が、下記一般式（ｂ－１）～（ｂ－４）のいずれかで表される化合物を含む、上記［１］～［３］のいずれか一項に記載の潤滑油組成物。
〔上記式中、Ｒ１及びＲ２は、それぞれ独立して、炭化水素基である。ｍ及びｎは、それぞれ独立して、１～１０の整数である。〕
［５］Ｒ１及びＲ２が、それぞれ独立して、炭素数５以上の分岐鎖アルキル基である、上記［４］に記載の潤滑油組成物。
［６］下記一般式（ｂ－ｘ）で表される化合物の含有割合が、前記潤滑油組成物に含まれる成分（Ｂ）の全量基準で、１０質量％未満である、上記［１］～［５］のいずれか一項に記載の潤滑油組成物。
〔上記式中、Ｒａは、水素原子又はメチル基であり、Ｒｂは、炭素数１～４のアルキル基である。ｐは、０又は１である。〕
［７］成分（Ｂ）の含有量が、前記潤滑油組成物の全量基準で、０．０１～３．０質量％である、上記［１］～［６］のいずれか一項の記載の潤滑油組成物。
［８］成分（Ｂ）の含有量が、前記潤滑油組成物の全量基準で、０．１０～１．０質量％である、上記［１］～［６］のいずれか一項の記載の潤滑油組成物。
［９］成分（Ａ）が、ＡＰＩ基油カテゴリーのグループ２及びグループ３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、上記［１］～［８］のいずれか一項の記載の潤滑油組成物。
［１０］さらにリン酸エステル及び亜リン酸エステルから選ばれる１種以上のリン系化合物（Ｃ）を含有する、上記［１］～［９］のいずれか一項に記載の潤滑油組成物。
［１１］成分（Ｃ）が、硫黄原子含有リン酸エステル及び硫黄原子含有亜リン酸エステルから選ばれる１種以上の硫黄リン系化合物（Ｃ１）を含む、上記［１０］に記載の潤滑油組成物。
［１２］減速機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減速機の潤滑に適用する、潤滑油組成物の使用。
［１４］上記［１］～［１２］のいずれか一項に記載の潤滑油組成物を製造する方法であって、
基油（Ａ）に、チアジアゾール系化合物（Ｂ）を配合すると共に、
硫化オレフィンの含有量が、前記潤滑油組成物の全量基準で、０．２０質量％未満であり、
前記潤滑油組成物の１００℃における動粘度が２．１以上５．０ｍｍ２／ｓ未満となるように調製する、潤滑油組成物の製造方法。 The present invention provides a lubricating oil composition containing a base oil and a thiadiazole-based compound, having an olefin sulfide content of less than a predetermined value, and having an kinematic viscosity at 100 ° C. adjusted to a specific range. Specifically, the lubricating oil composition according to the following aspects [1] to [12], the use of the lubricating oil composition according to the following aspect [13], and the lubricating oil composition according to the following aspect [14]. Provides a manufacturing method for.
[1] A lubricating oil composition containing a base oil (A) and a thiadiazole-based compound (B).
The content of the olefin sulfide is less than 0.20% by mass based on the total amount of the lubricating oil composition.
A lubricating oil composition having a kinematic viscosity of the lubricating oil composition at 100 ° C. of 2.1 mm 2 / s or more and less than 5.0 mm 2 / s.
[2] The lubricating oil composition according to the above [1], wherein the component (B) contains a thiadiazole-based compound (B1) having a branched chain alkyl group.
[3] The lubricating oil composition according to the above [2], wherein the branched chain alkyl group contained in the component (B1) has 5 or more carbon atoms.
[4] The item according to any one of [1] to [3] above, wherein the component (B) contains a compound represented by any of the following general formulas (b-1) to (b-4). Lubricating oil composition.
[In the above formula, R 1 and R 2 are each independently a hydrocarbon group. m and n are independently integers of 1 to 10. ]
[5] The lubricating oil composition according to the above [4], wherein R 1 and R 2 are independently branched-chain alkyl groups having 5 or more carbon atoms.
[6] The content ratio of the compound represented by the following general formula (bx) is less than 10% by mass based on the total amount of the component (B) contained in the lubricating oil composition. The lubricating oil composition according to any one of [5].
[In the above formula, Ra is a hydrogen atom or a methyl group, and R b is an alkyl group having 1 to 4 carbon atoms. p is 0 or 1. ]
[7] The description according to any one of [1] to [6] above, wherein the content of the component (B) is 0.01 to 3.0% by mass based on the total amount of the lubricating oil composition. Lubricating oil composition.
[8] The description according to any one of [1] to [6] above, wherein the content of the component (B) is 0.10 to 1.0% by mass based on the total amount of the lubricating oil composition. Lubricating oil composition.
[9] Any one of the above [1] to [8], wherein the component (A) is one or more selected from mineral oils classified into groups 2 and 3 of the API base oil category and synthetic oils. The lubricating oil composition according to the above item.
[10] The lubricating oil composition according to any one of the above [1] to [9], further containing one or more phosphorus-based compounds (C) selected from a phosphoric acid ester and a phosphite ester.
[11] The lubricating oil composition according to the above [10], wherein the component (C) contains one or more sulfur phosphorus-based compounds (C1) selected from a sulfur atom-containing phosphoric acid ester and a sulfur atom-containing subphosphate ester. thing.
[12] The lubricating oil composition according to any one of the above [1] to [11], which is used for lubricating a speed reducer.
[13] Use of a lubricating oil composition for applying the lubricating oil composition according to any one of the above [1] to [12] to lubricate a speed reducer.
[14] The method for producing the lubricating oil composition according to any one of the above [1] to [12].
The thiadiazole compound (B) is blended with the base oil (A), and at the same time,
The content of the olefin sulfide is less than 0.20% by mass based on the total amount of the lubricating oil composition.
A method for producing a lubricating oil composition, which is prepared so that the kinematic viscosity of the lubricating oil composition at 100 ° C. is 2.1 or more and less than 5.0 mm 2 / s.
［１］基油（Ａ）及びチアジアゾール系化合物（Ｂ）を含有する潤滑油組成物であって、
硫化オレフィンの含有量が、前記潤滑油組成物の全量基準で、０．２０質量％未満であり、
前記潤滑油組成物の１００℃における動粘度が２．１ｍｍ２／ｓ以上５．０ｍｍ２／ｓ未満である、潤滑油組成物。
［２］成分（Ｂ）が、分岐鎖アルキル基を有するチアジアゾール系化合物（Ｂ１）を含む、上記［１］に記載の潤滑油組成物。
［３］成分（Ｂ１）が有する前記分岐鎖アルキル基の炭素数が５以上である、上記［２］に記載の潤滑油組成物。
［４］成分（Ｂ）が、下記一般式（ｂ－１）～（ｂ－４）のいずれかで表される化合物を含む、上記［１］～［３］のいずれか一項に記載の潤滑油組成物。
［５］Ｒ１及びＲ２が、それぞれ独立して、炭素数５以上の分岐鎖アルキル基である、上記［４］に記載の潤滑油組成物。
［６］下記一般式（ｂ－ｘ）で表される化合物の含有割合が、前記潤滑油組成物に含まれる成分（Ｂ）の全量基準で、１０質量％未満である、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）の含有量が、前記潤滑油組成物の全量基準で、０．０１～３．０質量％である、上記［１］～［６］のいずれか一項の記載の潤滑油組成物。
［８］成分（Ｂ）の含有量が、前記潤滑油組成物の全量基準で、０．１０～１．０質量％である、上記［１］～［６］のいずれか一項の記載の潤滑油組成物。
［９］成分（Ａ）が、ＡＰＩ基油カテゴリーのグループ２及びグループ３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、上記［１］～［８］のいずれか一項の記載の潤滑油組成物。
［１０］さらにリン酸エステル及び亜リン酸エステルから選ばれる１種以上のリン系化合物（Ｃ）を含有する、上記［１］～［９］のいずれか一項に記載の潤滑油組成物。
［１１］成分（Ｃ）が、硫黄原子含有リン酸エステル及び硫黄原子含有亜リン酸エステルから選ばれる１種以上の硫黄リン系化合物（Ｃ１）を含む、上記［１０］に記載の潤滑油組成物。
［１２］減速機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減速機の潤滑に適用する、潤滑油組成物の使用。
［１４］上記［１］～［１２］のいずれか一項に記載の潤滑油組成物を製造する方法であって、
基油（Ａ）に、チアジアゾール系化合物（Ｂ）を配合すると共に、
硫化オレフィンの含有量が、前記潤滑油組成物の全量基準で、０．２０質量％未満であり、
前記潤滑油組成物の１００℃における動粘度が２．１以上５．０ｍｍ２／ｓ未満となるように調製する、潤滑油組成物の製造方法。 The present invention provides a lubricating oil composition containing a base oil and a thiadiazole-based compound, having an olefin sulfide content of less than a predetermined value, and having an kinematic viscosity at 100 ° C. adjusted to a specific range. Specifically, the lubricating oil composition according to the following aspects [1] to [12], the use of the lubricating oil composition according to the following aspect [13], and the lubricating oil composition according to the following aspect [14]. Provides a manufacturing method for.
[1] A lubricating oil composition containing a base oil (A) and a thiadiazole-based compound (B).
The content of the olefin sulfide is less than 0.20% by mass based on the total amount of the lubricating oil composition.
A lubricating oil composition having a kinematic viscosity of the lubricating oil composition at 100 ° C. of 2.1 mm 2 / s or more and less than 5.0 mm 2 / s.
[2] The lubricating oil composition according to the above [1], wherein the component (B) contains a thiadiazole-based compound (B1) having a branched chain alkyl group.
[3] The lubricating oil composition according to the above [2], wherein the branched chain alkyl group contained in the component (B1) has 5 or more carbon atoms.
[4] The item according to any one of [1] to [3] above, wherein the component (B) contains a compound represented by any of the following general formulas (b-1) to (b-4). Lubricating oil composition.
[5] The lubricating oil composition according to the above [4], wherein R 1 and R 2 are independently branched-chain alkyl groups having 5 or more carbon atoms.
[6] The content ratio of the compound represented by the following general formula (bx) is less than 10% by mass based on the total amount of the component (B) contained in the lubricating oil composition. The lubricating oil composition according to any one of [5].
[7] The description according to any one of [1] to [6] above, wherein the content of the component (B) is 0.01 to 3.0% by mass based on the total amount of the lubricating oil composition. Lubricating oil composition.
[8] The description according to any one of [1] to [6] above, wherein the content of the component (B) is 0.10 to 1.0% by mass based on the total amount of the lubricating oil composition. Lubricating oil composition.
[9] Any one of the above [1] to [8], wherein the component (A) is one or more selected from mineral oils classified into groups 2 and 3 of the API base oil category and synthetic oils. The lubricating oil composition according to the above item.
[10] The lubricating oil composition according to any one of the above [1] to [9], further containing one or more phosphorus-based compounds (C) selected from a phosphoric acid ester and a phosphite ester.
[11] The lubricating oil composition according to the above [10], wherein the component (C) contains one or more sulfur phosphorus-based compounds (C1) selected from a sulfur atom-containing phosphoric acid ester and a sulfur atom-containing subphosphate ester. thing.
[12] The lubricating oil composition according to any one of the above [1] to [11], which is used for lubricating a speed reducer.
[13] Use of a lubricating oil composition for applying the lubricating oil composition according to any one of the above [1] to [12] to lubricate a speed reducer.
[14] The method for producing the lubricating oil composition according to any one of the above [1] to [12].
The thiadiazole compound (B) is blended with the base oil (A), and at the same time,
The content of the olefin sulfide is less than 0.20% by mass based on the total amount of the lubricating oil composition.
A method for producing a lubricating oil composition, which is prepared so that the kinematic viscosity of the lubricating oil composition at 100 ° C. is 2.1 or more and less than 5.0 mm 2 / s.
本発明の好適な一態様の潤滑油組成物は、装置内に組み込まれた各種機構に適した特性を有する潤滑油組成物であり、より好適な一態様の潤滑油組成物は、冷却性、耐スカッフィング性、及び絶縁性をバランス良く向上させ得る。そのため、これらの潤滑油組成物は、減速機等の潤滑に好適に使用し得る。
The lubricating oil composition of one preferred embodiment of the present invention is a lubricating oil composition having properties suitable for various mechanisms incorporated in the apparatus, and the lubricating oil composition of a more preferred embodiment is cooling property. It is possible to improve scuffing resistance and insulation in a well-balanced manner. Therefore, these lubricating oil compositions can be suitably used for lubrication of speed reducers and the like.
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、例えば、数値範囲として「好ましくは３０以上、より好ましくは４０以上であり、また、好ましくは１００以下、より好ましくは８０以下である」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。
加えて、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、１００以下」という範囲であることを意味する。 For the numerical range described in the present specification, the upper limit value and the lower limit value can be arbitrarily combined. For example, when the 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 the present specification. It is included in the numerical range. Further, for example, when the numerical range is described as "preferably 30 or more, more preferably 40 or more, preferably 100 or less, more preferably 80 or less", it is referred to as "30 to 80". The range and the range of "40-100" are also included in the numerical range described herein.
In addition, as the numerical range described in the present specification, for example, the description of "60 to 100" means that the range is "60 or more and 100 or less".
加えて、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、１００以下」という範囲であることを意味する。 For the numerical range described in the present specification, the upper limit value and the lower limit value can be arbitrarily combined. For example, when the 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 the present specification. It is included in the numerical range. Further, for example, when the numerical range is described as "preferably 30 or more, more preferably 40 or more, preferably 100 or less, more preferably 80 or less", it is referred to as "30 to 80". The range and the range of "40-100" are also included in the numerical range described herein.
In addition, as the numerical range described in the present specification, for example, the description of "60 to 100" means that the range is "60 or more and 100 or less".
また、本明細書において、動粘度及び粘度指数は、ＪＩＳ Ｋ２２８３：２０００に準拠して測定又は算出された値を意味する。
Further, in the present specification, the kinematic viscosity and the viscosity index mean the values measured or calculated in accordance with JIS K2283: 2000.
〔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）（以下、「成分（Ａ）」ともいう）及びチアジアゾール系化合物（以下、「成分（Ｂ）」ともいう）を含有し、下記要件（Ｉ）及び（II）を満たす。
・要件（Ｉ）：硫化オレフィンの含有量が、前記潤滑油組成物の全量（１００質量％）基準で、０．２０質量％未満である。
・要件（II）：前記潤滑油組成物の１００℃における動粘度が２．１ｍｍ２／ｓ以上５．０ｍｍ２／ｓ未満である。 [Structure of lubricating oil composition]
The lubricating oil composition of one aspect of the present invention contains a base oil (A) (hereinafter, also referred to as “component (A)”) and a thiadiazole-based compound (hereinafter, also referred to as “component (B)”), and is described below. Satisfy requirements (I) and (II).
-Requirement (I): The content of the olefin sulfide is less than 0.20% by mass based on the total amount (100% by mass) of the lubricating oil composition.
-Requirement (II): The kinematic viscosity of the lubricating oil composition at 100 ° C. is 2.1 mm 2 / s or more and less than 5.0 mm 2 / s.
本発明の一態様の潤滑油組成物は、基油（Ａ）（以下、「成分（Ａ）」ともいう）及びチアジアゾール系化合物（以下、「成分（Ｂ）」ともいう）を含有し、下記要件（Ｉ）及び（II）を満たす。
・要件（Ｉ）：硫化オレフィンの含有量が、前記潤滑油組成物の全量（１００質量％）基準で、０．２０質量％未満である。
・要件（II）：前記潤滑油組成物の１００℃における動粘度が２．１ｍｍ２／ｓ以上５．０ｍｍ２／ｓ未満である。 [Structure of lubricating oil composition]
The lubricating oil composition of one aspect of the present invention contains a base oil (A) (hereinafter, also referred to as “component (A)”) and a thiadiazole-based compound (hereinafter, also referred to as “component (B)”), and is described below. Satisfy requirements (I) and (II).
-Requirement (I): The content of the olefin sulfide is less than 0.20% by mass based on the total amount (100% by mass) of the lubricating oil composition.
-Requirement (II): The kinematic viscosity of the lubricating oil composition at 100 ° C. is 2.1 mm 2 / s or more and less than 5.0 mm 2 / s.
本発明者らの検討によれば、潤滑油組成物の動粘度が低くなるほど、冷却性が向上することが分かった。冷却性に優れた潤滑油組成物は、電動モーターや発電機等の発熱を伴う装置の冷却に好適に用いることができる。
しかしながら、動粘度が低い潤滑油組成物は、スカッフィングと呼ばれる歯面等のすべり接触面に生じる固相凝着による局部的表面損傷が生じ易くなると共に、体積抵抗率の低下も見られ、絶縁性にも問題が生じる。
そこで、本発明では、潤滑油組成物の動粘度を、要件（II）を満たす範囲に調製することで、冷却性及び絶縁性を良好としつつ、成分（Ｂ）であるチアジアゾール系化合物を含有し、さらに硫化オレフィンの含有量を、要件（Ｉ）を満たす範囲に調製することで、冷却性及び絶縁性を良好に保持しつつ、耐スカッフィング性を向上させている。
その結果、本発明の一態様の潤滑油組成物は、冷却性、耐スカッフィング性、及び絶縁性をバランス良く向上させた潤滑油組成物とすることができる。 According to the studies by the present inventors, it was found that the lower the kinematic viscosity of the lubricating oil composition, the better the cooling property. The lubricating oil composition having excellent cooling properties can be suitably used for cooling a device that generates heat, such as an electric motor or a generator.
However, the lubricating oil composition having a low kinematic viscosity is liable to cause local surface damage due to solid phase adhesion that occurs on a slip contact surface such as a tooth surface called scuffing, and a decrease in volume resistivity is also observed, resulting in insulating properties. Also causes problems.
Therefore, in the present invention, by adjusting the kinematic viscosity of the lubricating oil composition within the range satisfying the requirement (II), the thiadiazole-based compound which is the component (B) is contained while improving the cooling property and the insulating property. Further, by adjusting the content of the olefin sulfide within the range satisfying the requirement (I), the scuffing resistance is improved while maintaining good cooling property and insulating property.
As a result, the lubricating oil composition according to one aspect of the present invention can be a lubricating oil composition having improved cooling property, scuffing resistance, and insulating property in a well-balanced manner.
しかしながら、動粘度が低い潤滑油組成物は、スカッフィングと呼ばれる歯面等のすべり接触面に生じる固相凝着による局部的表面損傷が生じ易くなると共に、体積抵抗率の低下も見られ、絶縁性にも問題が生じる。
そこで、本発明では、潤滑油組成物の動粘度を、要件（II）を満たす範囲に調製することで、冷却性及び絶縁性を良好としつつ、成分（Ｂ）であるチアジアゾール系化合物を含有し、さらに硫化オレフィンの含有量を、要件（Ｉ）を満たす範囲に調製することで、冷却性及び絶縁性を良好に保持しつつ、耐スカッフィング性を向上させている。
その結果、本発明の一態様の潤滑油組成物は、冷却性、耐スカッフィング性、及び絶縁性をバランス良く向上させた潤滑油組成物とすることができる。 According to the studies by the present inventors, it was found that the lower the kinematic viscosity of the lubricating oil composition, the better the cooling property. The lubricating oil composition having excellent cooling properties can be suitably used for cooling a device that generates heat, such as an electric motor or a generator.
However, the lubricating oil composition having a low kinematic viscosity is liable to cause local surface damage due to solid phase adhesion that occurs on a slip contact surface such as a tooth surface called scuffing, and a decrease in volume resistivity is also observed, resulting in insulating properties. Also causes problems.
Therefore, in the present invention, by adjusting the kinematic viscosity of the lubricating oil composition within the range satisfying the requirement (II), the thiadiazole-based compound which is the component (B) is contained while improving the cooling property and the insulating property. Further, by adjusting the content of the olefin sulfide within the range satisfying the requirement (I), the scuffing resistance is improved while maintaining good cooling property and insulating property.
As a result, the lubricating oil composition according to one aspect of the present invention can be a lubricating oil composition having improved cooling property, scuffing resistance, and insulating property in a well-balanced manner.
要件（Ｉ）で規定する硫化オレフィンとしては、例えば、下記一般式（ｉ）で表される化合物が挙げられる。
Ｒ－（Ｓ）ｑ－Ｒ’ （ｉ）
上記式（ｉ）中、Ｒは、炭素数２～２０のアルケニル基であり、Ｒ’は、炭素数２～２０のアルケニル基又は炭素数２～２０のアルキル基であり、ｑは１～１０の整数である。 Examples of the olefin sulfide specified in the requirement (I) include compounds represented by the following general formula (i).
R- (S) q -R'(i)
In the above formula (i), 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, and q is 1 to 10 carbon atoms. Is an integer of.
Ｒ－（Ｓ）ｑ－Ｒ’ （ｉ）
上記式（ｉ）中、Ｒは、炭素数２～２０のアルケニル基であり、Ｒ’は、炭素数２～２０のアルケニル基又は炭素数２～２０のアルキル基であり、ｑは１～１０の整数である。 Examples of the olefin sulfide specified in the requirement (I) include compounds represented by the following general formula (i).
R- (S) q -R'(i)
In the above formula (i), 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, and q is 1 to 10 carbon atoms. Is an integer of.
要件（Ｉ）で規定するとおり、硫化オレフィンの含有量は、前記潤滑油組成物の全量（１００質量％）基準で、０．２０質量％未満であるが、耐スカッフィング性をより向上させると共に、銅腐食防止性も良好とした潤滑油組成物とする観点から、好ましくは０．１８質量％未満、より好ましくは０．１５質量％未満、更に好ましくは０．１２質量％未満、より更に好ましくは０．１０質量％未満、特に好ましくは０．０７質量％未満であり、さらに、０．０５質量％未満、０．０４質量％未満、０．０３質量％未満、０．０２質量％未満、０．０１質量％未満、又は０．００１質量％未満としてもよい。
As specified in the requirement (I), the content of the olefin sulfide is less than 0.20% by mass based on the total amount (100% by mass) of the lubricating oil composition, but the scuffing resistance is further improved and the scuffing resistance is further improved. From the viewpoint of obtaining a lubricating oil composition having good copper corrosion resistance, it is preferably less than 0.18% by mass, more preferably less than 0.15% by mass, still more preferably less than 0.12% by mass, still more preferably. Less than 0.10% by weight, particularly preferably less than 0.07% by weight, more than 0.05% by weight, less than 0.04% by weight, less than 0.03% by weight, less than 0.02% by weight, 0 It may be less than 0.01% by mass or less than 0.001% by mass.
要件（II）で規定するとおり、潤滑油組成物の１００℃における動粘度は、２．１ｍｍ２／ｓ以上であるが、絶縁性をより向上させると共に、引火点を低く、取扱性に優れた潤滑油組成物とする観点から、好ましくは２．２ｍｍ２／ｓ以上、より好ましくは２．４ｍｍ２／ｓ以上、更に好ましくは２．５ｍｍ２／ｓ以上、より更に好ましくは２．７ｍｍ２／ｓ以上、特に好ましくは２．８ｍｍ２／ｓ以上であり、さらに、３．０ｍｍ２／ｓ以上、３．２ｍｍ２／ｓ以上、３．４ｍｍ２／ｓ以上、又は３．６ｍｍ２／ｓ以上としてもよい。
また、潤滑油組成物の１００℃における動粘度は、５．０ｍｍ２／ｓ未満であるが、冷却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４．８ｍｍ２／ｓ以下、より好ましくは４．５ｍｍ２／ｓ以下、より好ましくは４．２ｍｍ２／ｓ以下、更に好ましくは４．１ｍｍ２／ｓ以下、更に好ましくは３．９ｍｍ２／ｓ以下、より更に好ましくは３．７ｍｍ２／ｓ以下、より更に好ましくは３．５ｍｍ２／ｓ以下、特に好ましくは３．２ｍｍ２／ｓ以下であり、さらに、３．０ｍｍ２／ｓ以下、２．８ｍｍ２／ｓ以下、又は２．６ｍｍ２／ｓ以下としてもよい。 As specified in Requirement (II), the kinematic viscosity of the lubricating oil composition at 100 ° C. is 2.1 mm 2 / s or more, but the insulating property is further improved, the flash point is low, and the handleability is excellent. From the viewpoint of making a lubricating oil composition, it is 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 more preferably 2.7 mm 2 / s. s or more, particularly preferably 2.8 mm 2 / s or more, and further 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. May be.
The kinematic viscosity of the lubricating oil composition at 100 ° C. is less than 5.0 mm 2 / s, but is preferably 4.8 mm 2 / s or less from the viewpoint of obtaining a lubricating oil composition with further improved cooling performance. , 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 / s or less, still more preferably 3 .7 mm 2 / s or less, more preferably 3.5 mm 2 / s or less, particularly preferably 3.2 mm 2 / s or less, and further 3.0 mm 2 / s or less, 2.8 mm 2 / s or less, Alternatively, it may be 2.6 mm 2 / s or less.
また、潤滑油組成物の１００℃における動粘度は、５．０ｍｍ２／ｓ未満であるが、冷却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４．８ｍｍ２／ｓ以下、より好ましくは４．５ｍｍ２／ｓ以下、より好ましくは４．２ｍｍ２／ｓ以下、更に好ましくは４．１ｍｍ２／ｓ以下、更に好ましくは３．９ｍｍ２／ｓ以下、より更に好ましくは３．７ｍｍ２／ｓ以下、より更に好ましくは３．５ｍｍ２／ｓ以下、特に好ましくは３．２ｍｍ２／ｓ以下であり、さらに、３．０ｍｍ２／ｓ以下、２．８ｍｍ２／ｓ以下、又は２．６ｍｍ２／ｓ以下としてもよい。 As specified in Requirement (II), the kinematic viscosity of the lubricating oil composition at 100 ° C. is 2.1 mm 2 / s or more, but the insulating property is further improved, the flash point is low, and the handleability is excellent. From the viewpoint of making a lubricating oil composition, it is 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 more preferably 2.7 mm 2 / s. s or more, particularly preferably 2.8 mm 2 / s or more, and further 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. May be.
The kinematic viscosity of the lubricating oil composition at 100 ° C. is less than 5.0 mm 2 / s, but is preferably 4.8 mm 2 / s or less from the viewpoint of obtaining a lubricating oil composition with further improved cooling performance. , 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 / s or less, still more preferably 3 .7 mm 2 / s or less, more preferably 3.5 mm 2 / s or less, particularly preferably 3.2 mm 2 / s or less, and further 3.0 mm 2 / s or less, 2.8 mm 2 / s or less, Alternatively, it may be 2.6 mm 2 / s or less.
本発明の一態様の潤滑油組成物は、さらに耐摩耗性を向上させた潤滑油組成物とする観点から、さらにリン酸エステル及び亜リン酸エステルから選ばれる１種以上のリン系化合物（Ｃ）（以下、「成分（Ｃ）」ともいう）を含有することが好ましい。
また、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、成分（Ｂ）～（Ｃ）以外の各種添加剤をさらに含有してもよい。 The lubricating oil composition according to one aspect of the present invention is one or more phosphorus-based compounds (C) further selected from a phosphoric acid ester and a phosphite ester from the viewpoint of making a lubricating oil composition having further improved wear resistance. ) (Hereinafter, also referred to as "component (C)") is preferably contained.
Further, the lubricating oil composition according to one aspect of the present invention may further contain various additives other than the components (B) to (C), if necessary, as long as the effects of the present invention are not impaired.
また、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、成分（Ｂ）～（Ｃ）以外の各種添加剤をさらに含有してもよい。 The lubricating oil composition according to one aspect of the present invention is one or more phosphorus-based compounds (C) further selected from a phosphoric acid ester and a phosphite ester from the viewpoint of making a lubricating oil composition having further improved wear resistance. ) (Hereinafter, also referred to as "component (C)") is preferably contained.
Further, the lubricating oil composition according to one aspect of the present invention may further contain various additives other than the components (B) to (C), if necessary, as long as the effects of the present invention are not impaired.
本発明の一態様の潤滑油組成物において、成分（Ａ）及び（Ｂ）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、さらに、８５質量％以上、９０質量％以上、又は９２質量％以上としてもよく、また、１００質量％以下、９９．５質量％以下、９９．０質量％以下、９８．５質量％以下、９８．０質量％以下、９７．５質量％以下、９７．０質量％以下、９６．５質量％以下、又は９６．０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 the components (A) and (B) is preferably 50% by mass or more, more preferably 50% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition. Is 60% by mass or more, more preferably 70% by mass or more, still more preferably 75% by mass or more, particularly preferably 80% by mass or more, and further preferably 85% by mass or more, 90% by mass or more, or 92% by mass or more. Also, 100% by mass or less, 99.5% by mass or less, 99.0% by mass or less, 98.5% by mass or less, 98.0% by mass or less, 97.5% by mass or less, 97.0% by mass. % Or less, 96.5% by mass or less, or 96.0% 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）及び（Ｃ）の合計含有量としては、当該潤滑油組成物の全量（１００質量％）基準で、好ましくは５２質量％以上、より好ましくは６２質量％以上、更に好ましくは７２質量％以上、より更に好ましくは７７質量％以上、特に好ましくは８２質量％以上であり、さらに、８７質量％以上、９０質量％以上、９２質量％以上、又は９４質量％以上としてもよく、また、１００質量％以下、９９．５質量％以下、９９．０質量％以下、９８．５質量％以下、９８．０質量％以下、９７．５質量％以下、９７．０質量％以下、９６．５質量％以下、又は９６．０質量％以下としてもよい。
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。 In the lubricating oil composition of one aspect of the present invention, the total content of the components (A), (B) and (C) is preferably 52% by mass based on the total amount (100% by mass) of the lubricating oil composition. % Or more, more preferably 62% by mass or more, further preferably 72% by mass or more, still more preferably 77% by mass or more, particularly preferably 82% by mass or more, and further 87% by mass or more, 90% by mass or more. It may be 92% by mass or more, or 94% by mass or more, and 100% by mass or less, 99.5% by mass or less, 99.0% by mass or less, 98.5% by mass or less, 98.0% by mass or less, 97. It may be 5.5% by mass or less, 97.0% by mass or less, 96.5% by mass or less, or 96.0% by mass or less.
Hereinafter, details of each component contained in the lubricating oil composition of one aspect of the present invention will be described.
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。 In the lubricating oil composition of one aspect of the present invention, the total content of the components (A), (B) and (C) is preferably 52% by mass based on the total amount (100% by mass) of the lubricating oil composition. % Or more, more preferably 62% by mass or more, further preferably 72% by mass or more, still more preferably 77% by mass or more, particularly preferably 82% by mass or more, and further 87% by mass or more, 90% by mass or more. It may be 92% by mass or more, or 94% by mass or more, and 100% by mass or less, 99.5% by mass or less, 99.0% by mass or less, 98.5% by mass or less, 98.0% by mass or less, 97. It may be 5.5% by mass or less, 97.0% by mass or less, 96.5% by mass or less, or 96.0% by mass or less.
Hereinafter, details of each component contained in the lubricating oil composition of one aspect of the present invention will be described.
＜成分（Ａ）：基油＞
本発明の一態様で用いる成分（Ａ）である基油としては、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、パラフィン系原油、中間基系原油、ナフテン系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（水素化分解）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。 <Ingredient (A): Base oil>
Examples of the base oil as the component (A) used in one aspect of the present invention include one or more selected from mineral oils and synthetic oils.
As the mineral oil, for example, normal pressure residual oil obtained by atmospheric distillation of crude oil such as paraffin crude oil, intermediate base crude oil, and naphthenic crude oil; and distillate oil obtained by vacuum distillation of these normal pressure residual oils. A refined oil obtained by subjecting the distillate oil to one or more refining treatments such as solvent removal, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, and hydrorefining (hydrocracking); And so on.
本発明の一態様で用いる成分（Ａ）である基油としては、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、パラフィン系原油、中間基系原油、ナフテン系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（水素化分解）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。 <Ingredient (A): Base oil>
Examples of the base oil as the component (A) used in one aspect of the present invention include one or more selected from mineral oils and synthetic oils.
As the mineral oil, for example, normal pressure residual oil obtained by atmospheric distillation of crude oil such as paraffin crude oil, intermediate base crude oil, and naphthenic crude oil; and distillate oil obtained by vacuum distillation of these normal pressure residual oils. A refined oil obtained by subjecting the distillate oil to one or more refining treatments such as solvent removal, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, and hydrorefining (hydrocracking); And so on.
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。
Examples of the synthetic oil include poly such as an α-olefin homopolymer or an α-olefin copolymer (for example, an α-olefin copolymer having 8 to 14 carbon atoms such as an ethylene-α-olefin copolymer). α-olefin; isoparaffin; polyalkylene glycol; polyol ester, dibasic acid ester, phosphoric acid ester and other ester oils; polyphenyl ether and other ether oils; alkylbenzene; alkylnaphthalene; natural gas by Fisher-Tropsch method, etc. Examples thereof include synthetic oil (GTL) obtained by isomerizing the produced 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種以上を含むことが好ましく、グループIIIに分類される鉱油、及び、合成油から選ばれる１種以上を含むことがより好ましい。
The component (A) used in one embodiment of the present invention preferably contains mineral oils classified into Group II and Group III of the API (American Petroleum Institute) base oil category, and one or more selected from synthetic oils. It is more preferable to contain one or more selected from mineral oils classified into Group III and synthetic oils.
上記要件（II）を満たす潤滑油組成物に調製する観点から、本発明の一態様で用いる成分（Ａ）の１００℃における動粘度は、好ましくは１．９ｍｍ２／ｓ以上、より好ましくは２．０ｍｍ２／ｓ以上、より好ましくは２．１ｍｍ２／ｓ以上、更に好ましくは２．３ｍｍ２／ｓ以上、より更に好ましくは２．５ｍｍ２／ｓ以上、特に好ましくは２．７ｍｍ２／ｓ以上であり、さらに、２．９ｍｍ２／ｓ以上、３．０ｍｍ２／ｓ以上、３．２ｍｍ２／ｓ以上、３．４ｍｍ２／ｓ以上、又は３．６ｍｍ２／ｓ以上としてもよい。
また、成分（Ａ）の１００℃における動粘度は、好ましくは５．０ｍｍ２／ｓ以下、より好ましくは４．８ｍｍ２／ｓ以下、より好ましくは４．６ｍｍ２／ｓ以下、更に好ましくは４．５ｍｍ２／ｓ以下、更に好ましくは４．３ｍｍ２／ｓ以下、より更に好ましくは４．２ｍｍ２／ｓ以下、より更に好ましくは４．０ｍｍ２／ｓ以下、特に好ましくは３．８ｍｍ２／ｓ以下であり、さらに、３．７ｍｍ２／ｓ以下、３．６ｍｍ２／ｓ以下、３．５ｍｍ２／ｓ以下、３．４ｍｍ２／ｓ以下、３．３ｍｍ２／ｓ以下、３．２ｍｍ２／ｓ以下、３．０ｍｍ２／ｓ以下、２．８ｍｍ２／ｓ以下、又は２．６ｍｍ２／ｓ以下としてもよい。 From the viewpoint of preparing a lubricating oil composition satisfying the above requirement (II), the kinematic viscosity of the component (A) used in one aspect of the present invention at 100 ° C. is preferably 1.9 mm 2 / s or more, more preferably 2 0.0 mm 2 / s or more, more preferably 2.1 mm 2 / s or more, still more preferably 2.3 mm 2 / s or more, still more preferably 2.5 mm 2 / s or more, particularly preferably 2.7 mm 2 / s. Further, it may be 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.
The kinematic viscosity of the component (A) at 100 ° C. 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. 5.5 mm 2 / s or less, more preferably 4.3 mm 2 / s or less, even more preferably 4.2 mm 2 / s or less, still more preferably 4.0 mm 2 / s or less, particularly preferably 3.8 mm 2 / s or less. s or less, and further 3.7 mm 2 / s or less, 3.6 mm 2 / s or less, 3.5 mm 2 / s or less, 3.4 mm 2 / s or less, 3.3 mm 2 / s or less, 3.2 mm It may be 2 / s or less, 3.0 mm 2 / s or less, 2.8 mm 2 / s or less, or 2.6 mm 2 / s or less.
また、成分（Ａ）の１００℃における動粘度は、好ましくは５．０ｍｍ２／ｓ以下、より好ましくは４．８ｍｍ２／ｓ以下、より好ましくは４．６ｍｍ２／ｓ以下、更に好ましくは４．５ｍｍ２／ｓ以下、更に好ましくは４．３ｍｍ２／ｓ以下、より更に好ましくは４．２ｍｍ２／ｓ以下、より更に好ましくは４．０ｍｍ２／ｓ以下、特に好ましくは３．８ｍｍ２／ｓ以下であり、さらに、３．７ｍｍ２／ｓ以下、３．６ｍｍ２／ｓ以下、３．５ｍｍ２／ｓ以下、３．４ｍｍ２／ｓ以下、３．３ｍｍ２／ｓ以下、３．２ｍｍ２／ｓ以下、３．０ｍｍ２／ｓ以下、２．８ｍｍ２／ｓ以下、又は２．６ｍｍ２／ｓ以下としてもよい。 From the viewpoint of preparing a lubricating oil composition satisfying the above requirement (II), the kinematic viscosity of the component (A) used in one aspect of the present invention at 100 ° C. is preferably 1.9 mm 2 / s or more, more preferably 2 0.0 mm 2 / s or more, more preferably 2.1 mm 2 / s or more, still more preferably 2.3 mm 2 / s or more, still more preferably 2.5 mm 2 / s or more, particularly preferably 2.7 mm 2 / s. Further, it may be 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.
The kinematic viscosity of the component (A) at 100 ° C. 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. 5.5 mm 2 / s or less, more preferably 4.3 mm 2 / s or less, even more preferably 4.2 mm 2 / s or less, still more preferably 4.0 mm 2 / s or less, particularly preferably 3.8 mm 2 / s or less. s or less, and further 3.7 mm 2 / s or less, 3.6 mm 2 / s or less, 3.5 mm 2 / s or less, 3.4 mm 2 / s or less, 3.3 mm 2 / s or less, 3.2 mm It may be 2 / s or less, 3.0 mm 2 / s or less, 2.8 mm 2 / s or less, or 2.6 mm 2 / s or less.
また、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８０以上、更に好ましくは９０以上、より更に好ましくは１００以上である。
Further, the viscosity index of the component (A) used in one aspect of the present invention is preferably 70 or more, more preferably 80 or more, still more preferably 90 or more, still more preferably 100 or more.
また、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。そのため、低粘度の基油と、高粘度の基油を併用して、上記範囲の動粘度及び粘度指数となるように当該混合油を調製してもよい。
Further, in one aspect of the present invention, when a mixed oil in which two or more kinds of base oils are combined is used as the component (A), the kinematic viscosity and the viscosity index of the mixed oil are preferably in the above ranges. Therefore, the low-viscosity base oil and the high-viscosity base oil may be used in combination to prepare the mixed oil so as to have the kinematic viscosity and viscosity index in the above range.
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４５質量％以上、より好ましくは５０質量％以上、更に好ましくは５５質量％以上、より更に好ましくは６０質量％以上、特に好ましくは６５質量％以上であり、さらに、７０質量％以上、７５質量％以上、８０質量％以上、８５質量％以上、９０質量％以上、又は９２質量％以上としてもよく、また、好ましくは９９．９９質量％以下、より好ましくは９９．９０質量％以下、更に好ましくは９９．５０質量％以下、より更に好ましくは９９．００質量％以下、特に好ましくは９８．５０質量％以下であり、さらに、９８．００質量％以下、９７．５０質量％以下、９７．００質量％以下、９６．５０質量％以下、又は９６．００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 the component (A) is preferably 45% 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 55% by mass or more, further preferably 60% by mass or more, particularly preferably 65% by mass or more, further 70% by mass or more, 75% by mass or more, 80% by mass or more, 85% by mass or more, It may be 90% by mass or more, or 92% by mass or more, preferably 99.99% by mass or less, more preferably 99.90% by mass or less, still more preferably 99.50% by mass or less, still more preferably 99. .00% by mass or less, particularly preferably 98.50% by mass or less, and further 98.00% by mass or less, 97.50% by mass or less, 97.00% by mass or less, 96.50% by mass or less, or 96. It may be 0.00% by mass or less.
＜成分（Ｂ）：チアジアゾール系化合物＞
本発明の一態様で用いる成分（Ｂ）であるチアジアゾール系化合物としては、チアジアゾール環を有する化合物であればよいが、耐スカッフィング性をより向上させた潤滑油組成物とする観点から、下記一般式（ｂ－１）～（ｂ－４）のいずれかで表される化合物を含むことが好ましく、少なくとも下記一般式（ｂ－１）で表される化合物を含むことがより好ましい。
なお、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): Thiadiazole compound>
The thiadiazole-based compound which is the component (B) used in one aspect of the present invention may be a compound having a thiadiazole ring, but from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance, the following general formula is used. It is preferable to contain the compound represented by any of (b-1) to (b-4), and it is more preferable to contain at least the compound represented by the following general formula (b-1).
The component (B) may be used alone or in combination of two or more.
本発明の一態様で用いる成分（Ｂ）であるチアジアゾール系化合物としては、チアジアゾール環を有する化合物であればよいが、耐スカッフィング性をより向上させた潤滑油組成物とする観点から、下記一般式（ｂ－１）～（ｂ－４）のいずれかで表される化合物を含むことが好ましく、少なくとも下記一般式（ｂ－１）で表される化合物を含むことがより好ましい。
なお、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): Thiadiazole compound>
The thiadiazole-based compound which is the component (B) used in one aspect of the present invention may be a compound having a thiadiazole ring, but from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance, the following general formula is used. It is preferable to contain the compound represented by any of (b-1) to (b-4), and it is more preferable to contain at least the compound represented by the following general formula (b-1).
The component (B) may be used alone or in combination of two or more.
上記式中、Ｒ１及びＲ２は、それぞれ独立して、炭化水素基である。
ｍ及びｎは、それぞれ独立して、１～１０の整数であるが、耐スカッフィング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１～６の整数、より好ましくは１～４の整数、更に好ましくは２～３の整数、より更に好ましくは２である。 In the above formula, R 1 and R 2 are each independently a hydrocarbon group.
Although m and n are independently integers of 1 to 10, they are preferably integers of 1 to 6, more preferably 1 to 4, from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance. An integer of, more preferably an integer of 2 to 3, and even more preferably 2.
ｍ及びｎは、それぞれ独立して、１～１０の整数であるが、耐スカッフィング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１～６の整数、より好ましくは１～４の整数、更に好ましくは２～３の整数、より更に好ましくは２である。 In the above formula, R 1 and R 2 are each independently a hydrocarbon group.
Although m and n are independently integers of 1 to 10, they are preferably integers of 1 to 6, more preferably 1 to 4, from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance. An integer of, more preferably an integer of 2 to 3, and even more preferably 2.
Ｒ１及びＲ２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（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、ヘプチル基、オクチル基、２－エチルヘキシル基、ノニル基、１，１－ジメチルヘプチル基、デシル基、ウンデシル基、ドデシル基、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直鎖又は分岐鎖のアルキル基；エテニル基、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、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直鎖又は分岐鎖のアルケニル基；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、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アルキル基を有してもよいシクロアルキル基；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。
The hydrocarbon groups that can be selected as R 1 and R 2 include, for example, methyl group, ethyl group, propyl group (n-propyl group, isopropyl group), butyl group (n-butyl group, s-butyl group, etc.). t-Butyl group (isobutyl group), pentyl group, hexyl group, heptyl group, octyl group, 2-ethylhexyl group, nonyl group, 1,1-dimethylheptyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl Linear or branched alkyl group such as group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group; ethenyl group, propenyl group, butenyl group, pentenyl group, hexenyl group, heptenyl group, octenyl group, nonenyl group, Linear or branched alkyl groups such as decenyl group, undecenyl group, dodecenyl group, tridecenyl group, tetradecenyl group, pentadecenyl group; cyclohexyl group, dimethylcyclohexyl group, ethylcyclohexyl group, propylcyclohexyl group, butylcyclohexyl group, heptylcyclohexyl group Alkyl groups such as cycloalkyl groups; phenyl groups, naphthyl groups, anthrasenyl groups, biphenyl groups, terphenyl groups and other aryl groups; tolyl groups, dimethylphenyl groups, butylphenyl groups, nonylphenyl groups, methyls Alkyl aryl groups such as benzyl group and dimethylnaphthyl group; arylalkyl groups such as phenylmethyl group, phenylethyl group and diphenylmethyl group can be mentioned.
Ｒ１及びＲ２として選択し得る、前記炭化水素基の炭素数は、耐スカッフィング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以上、より好ましくは２以上、更に好ましくは３以上、より更に好ましくは５以上であり、さらに、７以上、８以上、又は９以上としてもよく、また、好ましくは３０以下、より好ましくは２４以下、より好ましくは２０以下、より好ましくは１８以下、更に好ましくは１６以下、更に好ましくは１４以下、より更に好ましくは１２以下、さらに、１１以下、又は１０以下としてもよい。
The carbon number of the hydrocarbon group, which can be selected as R 1 and R 2 , is preferably 1 or more, more preferably 2 or more, still more preferably 2 or more, from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance. 3 or more, more preferably 5 or more, further 7 or more, 8 or more, or 9 or more, preferably 30 or less, more preferably 24 or less, more preferably 20 or less, more preferably 18 Below, it may be more preferably 16 or less, still more preferably 14 or less, still more preferably 12 or less, and further preferably 11 or less, or 10 or less.
これらの中でも、Ｒ１及びＲ２は、それぞれ独立して、耐スカッフィング性をより向上させた潤滑油組成物とする観点から、アルキル基であることが好ましく、耐スカッフィング性と共に、銅腐食防止性を向上させて銅の溶出を効果的に抑制し得る潤滑油組成物とする観点から、分岐鎖アルキル基であることがより好ましく、炭素数５以上の分岐鎖アルキル基であることが更に好ましい。
分岐鎖アルキル基の炭素数は、上記観点から、好ましくは５以上であるが、より好ましくは７以上、更に好ましくは８以上、より更に好ましくは９以上であり、また、好ましくは３０以下、より好ましくは２４以下、より好ましくは２０以下、より好ましくは１８以下、更に好ましくは１６以下、更に好ましくは１４以下、より更に好ましくは１２以下、さらに、１１以下、又は１０以下としてもよい。 Among these, R 1 and R 2 are preferably alkyl groups from the viewpoint of independently forming a lubricating oil composition having further improved scuffing resistance, and have scuffing resistance and copper corrosion resistance. A branched-chain alkyl group is more preferable, and a branched-chain alkyl group having 5 or more carbon atoms is further preferable, from the viewpoint of obtaining a lubricating oil composition capable of effectively suppressing elution of copper by improving the above.
From the above viewpoint, the number of carbon atoms of the branched chain alkyl group is preferably 5 or more, more preferably 7 or more, still more preferably 8 or more, still more preferably 9 or more, and preferably 30 or less. It may be 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, still more preferably 12 or less, still 11 or less, or 10 or less.
分岐鎖アルキル基の炭素数は、上記観点から、好ましくは５以上であるが、より好ましくは７以上、更に好ましくは８以上、より更に好ましくは９以上であり、また、好ましくは３０以下、より好ましくは２４以下、より好ましくは２０以下、より好ましくは１８以下、更に好ましくは１６以下、更に好ましくは１４以下、より更に好ましくは１２以下、さらに、１１以下、又は１０以下としてもよい。 Among these, R 1 and R 2 are preferably alkyl groups from the viewpoint of independently forming a lubricating oil composition having further improved scuffing resistance, and have scuffing resistance and copper corrosion resistance. A branched-chain alkyl group is more preferable, and a branched-chain alkyl group having 5 or more carbon atoms is further preferable, from the viewpoint of obtaining a lubricating oil composition capable of effectively suppressing elution of copper by improving the above.
From the above viewpoint, the number of carbon atoms of the branched chain alkyl group is preferably 5 or more, more preferably 7 or more, still more preferably 8 or more, still more preferably 9 or more, and preferably 30 or less. It may be 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, still more preferably 12 or less, still 11 or less, or 10 or less.
本発明の一態様の潤滑油組成物において、耐スカッフィング性をより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）～（ｂ－４）のいずれかで表される化合物の合計含有割合は、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、好ましくは６０～１００質量％、より好ましくは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。
In the lubricating oil composition of one aspect of the present invention, it is represented by any of the above general formulas (b-1) to (b-4) from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance. The total content ratio of the compound is preferably 60 to 100% by mass, more preferably 70 to 100% by mass, still more preferably 80, based on the total amount (100% by mass) of the component (B) contained in the lubricating oil composition. It is -100% by mass, more preferably 90 to 100% by mass, and particularly preferably 95 to 100% by mass.
本発明の一態様の潤滑油組成物において、上記観点から、前記一般式（ｂ－１）で表される化合物の含有割合は、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、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％、特に好ましくは９０～１００質量％である。
In the lubricating oil composition of one aspect of the present invention, from the above viewpoint, the content ratio of the compound represented by the general formula (b-1) is the total mass (100) of the component (B) contained in the lubricating oil composition. By mass), preferably 50 to 100% by mass, more preferably 60 to 100% by mass, still more preferably 70 to 100% by mass, still more preferably 80 to 100% by mass, and particularly preferably 90 to 100% by mass. Is.
なお、本発明の一態様の潤滑油組成物において、下記一般式（ｂ－ｘ）で表される化合物の含有割合が、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、好ましくは１０質量％未満、より好ましくは８質量％未満、更に好ましくは５質量％未満、より更に好ましくは３質量％未満、特に好ましくは１質量％未満である。
〔上記式中、Ｒａは、水素原子又はメチル基であり、Ｒｂは、炭素数１～４のアルキル基である。ｐは、０又は１である。〕
In the lubricating oil composition of one aspect of the present invention, the content ratio of the compound represented by the following general formula (bx) is the total amount (100% by mass) of the component (B) contained in the lubricating oil composition. ) By reference, it is preferably less than 10% by mass, more preferably less than 8% by mass, still more preferably less than 5% by mass, still more preferably less than 3% by mass, and particularly preferably less than 1% by mass.
[In the above formula, Ra is a hydrogen atom or a methyl group, and R b is an alkyl group having 1 to 4 carbon atoms. p is 0 or 1. ]
本発明の一態様の潤滑油組成物において、耐スカッフィング性と共に、銅腐食防止性を向上させて銅の溶出を効果的に抑制し得る潤滑油組成物とする観点から、成分（Ｂ）が、分岐鎖アルキル基を有するチアジアゾール系化合物（Ｂ１）（以下、「成分（Ｂ１）」ともいう）を含むことが好ましい。
上記観点から、成分（Ｂ１）の含有割合は、前記潤滑油組成物に含まれる成分（Ｂ）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％、より好ましくは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。 In the lubricating oil composition of one aspect of the present invention, the component (B) is a component (B) from the viewpoint of making a lubricating oil composition capable of improving copper corrosion prevention as well as scuffing resistance and effectively suppressing elution of copper. It is preferable to contain a thiadiazol-based compound (B1) having a branched chain alkyl group (hereinafter, also referred to as “component (B1)”).
From the above viewpoint, the content ratio of the component (B1) is preferably 50 to 100% by mass, more preferably 60 to 100% by mass, based on the total amount (100% by mass) of the component (B) contained in the lubricating oil composition. %, More preferably 70 to 100% by mass, still more preferably 80 to 100% by mass, still more preferably 90 to 100% by mass, and particularly preferably 95 to 100% by mass.
上記観点から、成分（Ｂ１）の含有割合は、前記潤滑油組成物に含まれる成分（Ｂ）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％、より好ましくは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。 In the lubricating oil composition of one aspect of the present invention, the component (B) is a component (B) from the viewpoint of making a lubricating oil composition capable of improving copper corrosion prevention as well as scuffing resistance and effectively suppressing elution of copper. It is preferable to contain a thiadiazol-based compound (B1) having a branched chain alkyl group (hereinafter, also referred to as “component (B1)”).
From the above viewpoint, the content ratio of the component (B1) is preferably 50 to 100% by mass, more preferably 60 to 100% by mass, based on the total amount (100% by mass) of the component (B) contained in the lubricating oil composition. %, More preferably 70 to 100% by mass, still more preferably 80 to 100% by mass, still more preferably 90 to 100% by mass, and particularly preferably 95 to 100% by mass.
成分（Ｂ１）が有する分岐鎖アルキル基の炭素数は、耐スカッフィング性と共に、銅腐食防止性を向上させて銅の溶出を効果的に抑制し得る潤滑油組成物とする観点から、好ましくは５以上、より好ましくは７以上、更に好ましくは８以上、より更に好ましくは９以上であり、また、好ましくは３０以下、より好ましくは２４以下、より好ましくは２０以下、より好ましくは１８以下、更に好ましくは１６以下、更に好ましくは１４以下、より更に好ましくは１２以下であり、さらに、１１以下、又は１０以下としてもよい。
The number of carbon atoms of the branched chain alkyl group contained in the component (B1) is preferably 5 from the viewpoint of providing a lubricating oil composition capable of improving copper corrosion prevention and effectively suppressing copper elution as well as scuffing resistance. The above is more preferably 7 or more, still more preferably 8 or more, still more preferably 9 or more, still preferably 30 or less, more preferably 24 or less, more preferably 20 or less, still more preferably 18 or less, still more preferable. Is 16 or less, more preferably 14 or less, still more preferably 12 or less, and further, 11 or less, or 10 or less.
耐スカッフィング性と共に、銅腐食防止性を向上させて銅の溶出を効果的に抑制し得る潤滑油組成物とする観点から、成分（Ｂ１）は、前記一般式（ｂ－１）～（ｂ－４）のいずれかで表され、各式中のＲ１及びＲ２が、それぞれ独立して、分岐鎖アルキル基である化合物であることが好ましく、前記一般式（ｂ－１）で表され、式中のＲ１及びＲ２が、それぞれ独立して、分岐鎖アルキル基である化合物であることがより好ましい。なお、分岐鎖アルキル基の炭素数の好適範囲は上述のとおりである。
From the viewpoint of making a lubricating oil composition capable of improving copper corrosion prevention and effectively suppressing copper elution as well as scuffing resistance, the components (B1) are represented by the general formulas (b-1) to (b-). It is preferably represented by any of 4), and R 1 and R 2 in each formula are preferably compounds which are independently branched chain alkyl groups, and are represented by the above general formula (b-1). It is more preferable that R 1 and R 2 in the formula are each independently a compound which is a branched chain alkyl group. The preferred range of the number of carbon atoms of the branched chain alkyl group is as described above.
本発明の一態様の潤滑油組成物において、耐スカッフィング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）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０．０１質量％以上、より好ましくは０．０５質量％以上、更に好ましくは０．０７質量％以上、より更に好ましくは０．１０質量％以上、特に好ましくは０．１５質量％以上であり、さらに、０．１７質量％以上、０．２０質量％以上、０．２３質量％以上、０．２５質量％以上、０．２７質量％以上、０．３０質量％以上、０．３２質量％以上、０．３５質量％以上、又は０．３７質量％以上としてもよく、また、好ましくは３．０質量％以下、より好ましくは２．５質量％以下、更に好ましくは２．０質量％以下、より更に好ましくは１．５質量％以下、特に好ましくは１．２質量％以下であり、さらに、１．０質量％以下、０．９５質量％以下、０．９０質量％以下、０．８５質量％以下、０．８０質量％以下、０．７５質量％以下、０．７０質量％以下、０．６５質量％以下、０．６０質量％以下、０．５５質量％以下、又は０．５０質量％以下としてもよい。
例えば、成分（Ｂ）の含有量は、前記潤滑油組成物の全量（１００質量％）基準で、０．０１～３．０質量％、０．０５～２．５質量％、０．０７～２．０質量％、０．１０～１．５質量％、０．１０～１．２質量％以下、０．１０～１．０質量％、又は０．１５～１．０質量％である。 In the lubricating oil composition of one aspect of the present invention, the content of the component (B) is the total amount (100% by mass) of the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance. By reference, it is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, further preferably 0.07% by mass or more, still more preferably 0.10% by mass or more, and particularly preferably 0.15% by mass. % Or more, and further, 0.17% by mass or more, 0.20% by mass or more, 0.23% by mass or more, 0.25% by mass or more, 0.27% by mass or more, 0.30% by mass or more, 0. It may be .32% by mass or more, 0.35% by mass or more, or 0.37% by mass or more, preferably 3.0% by mass or less, more preferably 2.5% by mass or less, still more preferably 2. 0% by mass or less, more preferably 1.5% by mass or less, particularly preferably 1.2% by mass or less, and further 1.0% by mass or less, 0.95% by mass or less, 0.90% by mass or less. , 0.85% by mass or less, 0.80% by mass or less, 0.75% by mass or less, 0.70% by mass or less, 0.65% by mass or less, 0.60% by mass or less, 0.55% by mass or less, Alternatively, it may be 0.50% by mass or less.
For example, the content of the component (B) is 0.01 to 3.0% by mass, 0.05 to 2.5% by mass, 0.07 to 0.07 to 30% by mass based on the total amount (100% by mass) of the lubricating oil composition. It is 2.0% by mass, 0.10 to 1.5% by mass, 0.10 to 1.2% by mass or less, 0.10 to 1.0% by mass, or 0.15 to 1.0% by mass.
例えば、成分（Ｂ）の含有量は、前記潤滑油組成物の全量（１００質量％）基準で、０．０１～３．０質量％、０．０５～２．５質量％、０．０７～２．０質量％、０．１０～１．５質量％、０．１０～１．２質量％以下、０．１０～１．０質量％、又は０．１５～１．０質量％である。 In the lubricating oil composition of one aspect of the present invention, the content of the component (B) is the total amount (100% by mass) of the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance. By reference, it is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, further preferably 0.07% by mass or more, still more preferably 0.10% by mass or more, and particularly preferably 0.15% by mass. % Or more, and further, 0.17% by mass or more, 0.20% by mass or more, 0.23% by mass or more, 0.25% by mass or more, 0.27% by mass or more, 0.30% by mass or more, 0. It may be .32% by mass or more, 0.35% by mass or more, or 0.37% by mass or more, preferably 3.0% by mass or less, more preferably 2.5% by mass or less, still more preferably 2. 0% by mass or less, more preferably 1.5% by mass or less, particularly preferably 1.2% by mass or less, and further 1.0% by mass or less, 0.95% by mass or less, 0.90% by mass or less. , 0.85% by mass or less, 0.80% by mass or less, 0.75% by mass or less, 0.70% by mass or less, 0.65% by mass or less, 0.60% by mass or less, 0.55% by mass or less, Alternatively, it may be 0.50% by mass or less.
For example, the content of the component (B) is 0.01 to 3.0% by mass, 0.05 to 2.5% by mass, 0.07 to 0.07 to 30% by mass based on the total amount (100% by mass) of the lubricating oil composition. It is 2.0% by mass, 0.10 to 1.5% by mass, 0.10 to 1.2% by mass or less, 0.10 to 1.0% by mass, or 0.15 to 1.0% by mass.
本発明の一態様の潤滑油組成物において、耐スカッフィング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）の硫黄原子換算での含有量は、前記潤滑油組成物の全量（１００質量％）基準で、好ましくは３０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２００質量ｐｐｍ以上、特に好ましくは３００質量ｐｐｍ以上であり、さらに、４００質量ｐｐｍ以上、５００質量ｐｐｍ以上、６００質量ｐｐｍ以上、７００質量ｐｐｍ以上、８００質量ｐｐｍ以上、９００質量ｐｐｍ以上、１０００質量ｐｐｍ以上、１０５０質量ｐｐｍ以上、又は１１００質量ｐｐｍ以上としてもよく、また、好ましくは１００００質量ｐｐｍ以下、より好ましくは８０００質量ｐｐｍ以下、更に好ましくは７０００質量ｐｐｍ以下、より更に好ましくは６０００質量ｐｐｍ以下、特に好ましくは５０００質量ｐｐｍ以下であり、さらに、４５００質量ｐｐｍ以下、４０００質量ｐｐｍ以下、３５００質量ｐｐｍ以下、３０００質量ｐｐｍ以下、２５００質量ｐｐｍ以下、２２００質量ｐｐｍ以下、２０００質量ｐｐｍ以下、１８００質量ｐｐｍ以下、１７００質量ｐｐｍ以下、１６００質量ｐｐｍ以下、１５００質量ｐｐｍ以下、又は１４００質量ｐｐｍ以下としてもよい。
なお、本明細書において、硫黄原子の含有量は、ＪＩＳ Ｋ２５４１－６：２０１３に準拠して測定した値を意味する。 In the lubricating oil composition of one aspect of the present invention, the content of the component (B) in terms of sulfur atom is the total mass of the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance. On a (100% by mass) basis, it is preferably 30% by mass or more, more preferably 50% by mass or more, further preferably 100% by mass or more, still more preferably 200% by mass or more, and particularly preferably 300% by mass or more. Further, it may be 400 mass ppm or more, 500 mass ppm or more, 600 mass ppm or more, 700 mass ppm or more, 800 mass ppm or more, 900 mass ppm or more, 1000 mass ppm or more, 1050 mass ppm or more, or 1100 mass ppm or more. Further, it is preferably 10000 mass ppm or less, more preferably 8000 mass ppm or less, further preferably 7000 mass ppm or less, still more preferably 6000 mass ppm or less, particularly preferably 5000 mass ppm or less, and further 4500 mass ppm or less. 4000 mass ppm or less, 3500 mass ppm or less, 3000 mass ppm or less, 2500 mass ppm or less, 2200 mass ppm or less, 2000 mass ppm or less, 1800 mass ppm or less, 1700 mass ppm or less, 1600 mass ppm or less, 1500 mass ppm or less. Below, or may be 1400 mass ppm or less.
In addition, in this specification, the content of a sulfur atom means a value measured according to JIS K2541-6: 2013.
なお、本明細書において、硫黄原子の含有量は、ＪＩＳ Ｋ２５４１－６：２０１３に準拠して測定した値を意味する。 In the lubricating oil composition of one aspect of the present invention, the content of the component (B) in terms of sulfur atom is the total mass of the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance. On a (100% by mass) basis, it is preferably 30% by mass or more, more preferably 50% by mass or more, further preferably 100% by mass or more, still more preferably 200% by mass or more, and particularly preferably 300% by mass or more. Further, it may be 400 mass ppm or more, 500 mass ppm or more, 600 mass ppm or more, 700 mass ppm or more, 800 mass ppm or more, 900 mass ppm or more, 1000 mass ppm or more, 1050 mass ppm or more, or 1100 mass ppm or more. Further, it is preferably 10000 mass ppm or less, more preferably 8000 mass ppm or less, further preferably 7000 mass ppm or less, still more preferably 6000 mass ppm or less, particularly preferably 5000 mass ppm or less, and further 4500 mass ppm or less. 4000 mass ppm or less, 3500 mass ppm or less, 3000 mass ppm or less, 2500 mass ppm or less, 2200 mass ppm or less, 2000 mass ppm or less, 1800 mass ppm or less, 1700 mass ppm or less, 1600 mass ppm or less, 1500 mass ppm or less. Below, or may be 1400 mass ppm or less.
In addition, in this specification, the content of a sulfur atom means a value measured according to JIS K2541-6: 2013.
本発明の一態様の潤滑油組成物において、耐スカッフィング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）の窒素原子換算での含有量は、前記潤滑油組成物の全量（１００質量％）基準で、好ましくは１０質量ｐｐｍ以上、より好ましくは３０質量ｐｐｍ以上、更に好ましくは５０質量ｐｐｍ以上、より更に好ましくは７０質量ｐｐｍ以上、特に好ましくは１００質量ｐｐｍ以上であり、さらに、１２０質量ｐｐｍ以上、１３０質量ｐｐｍ以上、１４０質量ｐｐｍ以上、１５０質量ｐｐｍ以上、１６０質量ｐｐｍ以上、１７０質量ｐｐｍ以上、１８０質量ｐｐｍ以上、１９０質量ｐｐｍ以上、又は２００質量ｐｐｍ以上としてもよく、また、好ましくは２０００質量ｐｐｍ以下、より好ましくは１８００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１２００質量ｐｐｍ以下、特に好ましくは１０００質量ｐｐｍ以下であり、さらに、９００質量ｐｐｍ以下、８００質量ｐｐｍ以下、７００質量ｐｐｍ以下、６００質量ｐｐｍ以下、５５０質量ｐｐｍ以下、５００質量ｐｐｍ以下、４５０質量ｐｐｍ以下、４００質量ｐｐｍ以下、３５０質量ｐｐｍ以下、３２０質量ｐｐｍ以下、３００質量ｐｐｍ以下、又は２８０質量ｐｐｍ以下としてもよい。
なお、本明細書において、窒素原子の含有量は、ＪＩＳ Ｋ２６０９に準拠して測定した値を意味する。 In the lubricating oil composition of one aspect of the present invention, the content of the component (B) in terms of nitrogen atom is the total mass of the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance. On a (100% by mass) basis, it is preferably 10% by mass or more, more preferably 30% by mass or more, further preferably 50% by mass or more, still more preferably 70% by mass or more, and particularly preferably 100% by mass or more. Further, it may be 120 mass ppm or more, 130 mass ppm or more, 140 mass ppm or more, 150 mass ppm or more, 160 mass ppm or more, 170 mass ppm or more, 180 mass ppm or more, 190 mass ppm or more, or 200 mass ppm or more. Further, it is preferably 2000 mass ppm or less, more preferably 1800 mass ppm or less, further preferably 1500 mass ppm or less, still more preferably 1200 mass ppm or less, particularly preferably 1000 mass ppm or less, and further preferably 900 mass ppm or less. Below, 800 mass ppm or less, 700 mass ppm or less, 600 mass ppm or less, 550 mass ppm or less, 500 mass ppm or less, 450 mass ppm or less, 400 mass ppm or less, 350 mass ppm or less, 320 mass ppm or less, 300 mass ppm or less. Below, or may be 280 mass ppm or less.
In addition, in this specification, the content of a nitrogen atom means a value measured according to JIS K2609.
なお、本明細書において、窒素原子の含有量は、ＪＩＳ Ｋ２６０９に準拠して測定した値を意味する。 In the lubricating oil composition of one aspect of the present invention, the content of the component (B) in terms of nitrogen atom is the total mass of the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved scuffing resistance. On a (100% by mass) basis, it is preferably 10% by mass or more, more preferably 30% by mass or more, further preferably 50% by mass or more, still more preferably 70% by mass or more, and particularly preferably 100% by mass or more. Further, it may be 120 mass ppm or more, 130 mass ppm or more, 140 mass ppm or more, 150 mass ppm or more, 160 mass ppm or more, 170 mass ppm or more, 180 mass ppm or more, 190 mass ppm or more, or 200 mass ppm or more. Further, it is preferably 2000 mass ppm or less, more preferably 1800 mass ppm or less, further preferably 1500 mass ppm or less, still more preferably 1200 mass ppm or less, particularly preferably 1000 mass ppm or less, and further preferably 900 mass ppm or less. Below, 800 mass ppm or less, 700 mass ppm or less, 600 mass ppm or less, 550 mass ppm or less, 500 mass ppm or less, 450 mass ppm or less, 400 mass ppm or less, 350 mass ppm or less, 320 mass ppm or less, 300 mass ppm or less. Below, or may be 280 mass ppm or less.
In addition, in this specification, the content of a nitrogen atom means a value measured according to JIS K2609.
＜成分（Ｃ）：リン系化合物（Ｃ）＞
本発明の一態様の潤滑油組成物は、さらに耐摩耗性を向上させた潤滑油組成物とする観点から、さらにリン酸エステル及び亜リン酸エステルから選ばれる１種以上のリン系化合物（Ｃ）を含有することが好ましい。 <Component (C): Phosphorus compound (C)>
The lubricating oil composition according to one aspect of the present invention is one or more phosphorus-based compounds (C) further selected from a phosphoric acid ester and a phosphite ester from the viewpoint of making a lubricating oil composition having further improved wear resistance. ) Is preferably contained.
本発明の一態様の潤滑油組成物は、さらに耐摩耗性を向上させた潤滑油組成物とする観点から、さらにリン酸エステル及び亜リン酸エステルから選ばれる１種以上のリン系化合物（Ｃ）を含有することが好ましい。 <Component (C): Phosphorus compound (C)>
The lubricating oil composition according to one aspect of the present invention is one or more phosphorus-based compounds (C) further selected from a phosphoric acid ester and a phosphite ester from the viewpoint of making a lubricating oil composition having further improved wear resistance. ) Is preferably contained.
本発明の一態様で成分（Ｃ）として含有するリン酸エステルは、例えば、下記一般式（ｃ－１）で表される中性リン酸エステル、及び、下記一般式（ｃ－２）又は（ｃ－３）で表される酸性リン酸エステルが挙げられる。
また、本発明の一態様で成分（Ｃ）として含有する亜リン酸エステルは、例えば、下記一般式（ｃ－４）又は（ｃ－５）で表される酸性亜リン酸エステルが挙げられる。 The phosphoric acid ester contained as the component (C) in one aspect of the present invention is, for example, a neutral phosphoric acid ester represented by the following general formula (c-1), and the following general formula (c-2) or ( Examples thereof include the acidic phosphoric acid ester represented by c-3).
Further, examples of the phosphite ester contained as the component (C) in one aspect of the present invention include acidic phosphite esters represented by the following general formula (c-4) or (c-5).
また、本発明の一態様で成分（Ｃ）として含有する亜リン酸エステルは、例えば、下記一般式（ｃ－４）又は（ｃ－５）で表される酸性亜リン酸エステルが挙げられる。 The phosphoric acid ester contained as the component (C) in one aspect of the present invention is, for example, a neutral phosphoric acid ester represented by the following general formula (c-1), and the following general formula (c-2) or ( Examples thereof include the acidic phosphoric acid ester represented by c-3).
Further, examples of the phosphite ester contained as the component (C) in one aspect of the present invention include acidic phosphite esters represented by the following general formula (c-4) or (c-5).
上記式中、ＲＡは、それぞれ独立して、炭素数１～３０のアルキル基、炭素数２～２０のアルケニル基、炭素数１～６のアルキル基で置換されてもよい炭素数６～１８のアリール基、スルフィド結合を有する基等が挙げられる。なお、複数のＲＡは、同一であってもよく、互いに異なっていてもよい。
In the above formula, RA may be independently substituted with an alkyl group having 1 to 30 carbon atoms, an alkenyl group having 2 to 20 carbon atoms, and an alkyl group having 1 to 6 carbon atoms, respectively, with 6 to 18 carbon atoms. Examples thereof include an aryl group and a group having a sulfide bond. The plurality of RAs may be the same or different from each other.
ＲＡ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、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。
これらのアルキル基は、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。
前記アルキル基の炭素数は、１～３０であるが、好ましくは３～２０、より好ましくは５～１６、更に好ましくは６～１４、より更に好ましくは８～１２である。 Examples of the alkyl group that can be selected as RA include a methyl group, an ethyl group, a propyl group (n-propyl group, isopropyl group), and a 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, undecyl group, dodecyl group, tridecyl, tetradecyl group, hexadecyl group, octadecyl group and the like.
These alkyl groups may be linear alkyl groups or branched chain alkyl groups.
The alkyl group has 1 to 30 carbon atoms, preferably 3 to 20, more preferably 5 to 16, still more preferably 6 to 14, and even more preferably 8 to 12.
これらのアルキル基は、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。
前記アルキル基の炭素数は、１～３０であるが、好ましくは３～２０、より好ましくは５～１６、更に好ましくは６～１４、より更に好ましくは８～１２である。 Examples of the alkyl group that can be selected as RA include a methyl group, an ethyl group, a propyl group (n-propyl group, isopropyl group), and a 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, undecyl group, dodecyl group, tridecyl, tetradecyl group, hexadecyl group, octadecyl group and the like.
These alkyl groups may be linear alkyl groups or branched chain alkyl groups.
The alkyl group has 1 to 30 carbon atoms, preferably 3 to 20, more preferably 5 to 16, still more preferably 6 to 14, and even more preferably 8 to 12.
ＲＡ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、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、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、ヘキサデセニル基、オクタデセニル基等が挙げられる。
これらのアルケニル基は、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。
前記アルケニル基の炭素数は、２～２０であるが、好ましくは３～１６、より好ましくは６～１２である。 Examples of the alkenyl group that can be selected as RA 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 and a dodecenyl group. Examples thereof include a tridecenyl group, a tetradecenyl group, a pentadecenyl group, a hexadecenyl group, an octadecenyl group and the like.
These alkenyl groups may be linear alkenyl groups or branched chain alkenyl groups.
The alkenyl group has 2 to 20 carbon atoms, preferably 3 to 16 carbon atoms, and more preferably 6 to 12 carbon atoms.
これらのアルケニル基は、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。
前記アルケニル基の炭素数は、２～２０であるが、好ましくは３～１６、より好ましくは６～１２である。 Examples of the alkenyl group that can be selected as RA 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 and a dodecenyl group. Examples thereof include a tridecenyl group, a tetradecenyl group, a pentadecenyl group, a hexadecenyl group, an octadecenyl group and the like.
These alkenyl groups may be linear alkenyl groups or branched chain alkenyl groups.
The alkenyl group has 2 to 20 carbon atoms, preferably 3 to 16 carbon atoms, and more preferably 6 to 12 carbon atoms.
ＲＡ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、フェニル基が好ましい。
なお、これらアリール基に置換し得る「炭素数１～６のアルキル基」としては、上述のアルキル基のうち、炭素数１～６のアルキル基が挙げられる。 Examples of the aryl group that can be selected as RA 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, and a phenyl group is preferable.
Examples of the "alkyl group having 1 to 6 carbon atoms" that can be substituted with these aryl groups include the above-mentioned alkyl groups having 1 to 6 carbon atoms.
なお、これらアリール基に置換し得る「炭素数１～６のアルキル基」としては、上述のアルキル基のうち、炭素数１～６のアルキル基が挙げられる。 Examples of the aryl group that can be selected as RA 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, and a phenyl group is preferable.
Examples of the "alkyl group having 1 to 6 carbon atoms" that can be substituted with these aryl groups include the above-mentioned alkyl groups having 1 to 6 carbon atoms.
ＲＡとして選択し得る、スルフィド結合を有する基としては、下記一般式（ii）で表される基が好ましい。
上記式（ii）中、ＲＡ０１は水素原子又は炭素数１～２０の１価の有機基である。ＲＡ０２は２価の有機基である。ｘは１以上の整数であり、好ましくは１～１０の整数、より好ましくは１～５の整数、更に好ましくは１～３の整数、より更に好ましくは１又は２、特に好ましくは１である。＊は結合位置を示す。
As the group having a sulfide bond that can be selected as RA , a group represented by the following general formula (ii) is preferable.
In the above formula (ii), RA01 is a hydrogen atom or a monovalent organic group having 1 to 20 carbon atoms. RA02 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 more preferably 1 or 2, and particularly preferably 1. * Indicates the bond position.
ＲＡ０１として選択し得る、１価の有機基としては、例えば、アルキル基、アルケニル基、アリール基等が挙げられるが、炭素数１～２０のアルキル基、もしくは、炭素数１～２０（好ましくは２～１８、より好ましくは４～１６、更に好ましくは６～１２、より更に好ましくは８～１０）のアルキル基の少なくとも１つの－ＣＨ２－構造が、－Ｏ－、－Ｓ－、－ＣＯＯ－、－ＯＣＯ－、－ＣＳＯ－、－ＯＣＳ－、－ＣＨ＝ＣＨ－又は－Ｃ≡Ｃ－に置換された基であることが好ましく、アルキル基がより好ましい。
ＲＡ０１として選択し得る、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が、直鎖アルキル基であることが好ましい。
また、当該アルキル基の炭素数は、１～２０であるが、好ましくは２～１８、より好ましくは４～１６、更に好ましくは６～１２、より更に好ましくは８～１０である。 Examples of the monovalent organic group that can be selected as RA01 include an alkyl group, an alkenyl group, an aryl group and the like, and an alkyl group having 1 to 20 carbon atoms or an alkyl group having 1 to 20 carbon atoms (preferably). At least one -CH 2 -structure of an alkyl group of 2-18, more preferably 4-16, even more preferably 6-12, even more preferably 8-10) is -O-, -S-, -COO. -, -OCO-, -CSO-, -OCS-, -CH = CH- or -C≡C- is preferable, and an alkyl group is more preferable.
The alkyl group that can be selected as RA01 may be a linear alkyl group or a branched chain alkyl group, but a linear alkyl group is preferable.
The alkyl group has 1 to 20 carbon atoms, preferably 2 to 18, more preferably 4 to 16, still more preferably 6 to 12, and even more preferably 8 to 10.
ＲＡ０１として選択し得る、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が、直鎖アルキル基であることが好ましい。
また、当該アルキル基の炭素数は、１～２０であるが、好ましくは２～１８、より好ましくは４～１６、更に好ましくは６～１２、より更に好ましくは８～１０である。 Examples of the monovalent organic group that can be selected as RA01 include an alkyl group, an alkenyl group, an aryl group and the like, and an alkyl group having 1 to 20 carbon atoms or an alkyl group having 1 to 20 carbon atoms (preferably). At least one -CH 2 -structure of an alkyl group of 2-18, more preferably 4-16, even more preferably 6-12, even more preferably 8-10) is -O-, -S-, -COO. -, -OCO-, -CSO-, -OCS-, -CH = CH- or -C≡C- is preferable, and an alkyl group is more preferable.
The alkyl group that can be selected as RA01 may be a linear alkyl group or a branched chain alkyl group, but a linear alkyl group is preferable.
The alkyl group has 1 to 20 carbon atoms, preferably 2 to 18, more preferably 4 to 16, still more preferably 6 to 12, and even more preferably 8 to 10.
ＲＡ０２として選択し得る、２価の有機基としては、例えば、炭素数１～２０のアルキレン基、シクロアルキレン基、炭素数１～２０のアルケニレン基、シクロアルケニレン基、アリーレン基等が挙げられるが、炭素数１～２０のアルキレン基、もしくは、炭素数１～２０（好ましくは２～１２、より好ましくは２～８、更に好ましくは２～４）のアルキレン基の少なくとも１つの－ＣＨ２－構造が、－Ｏ－、－Ｓ－、－ＣＯＯ－、－ＯＣＯ－、－ＣＳＯ－、－ＯＣＳ－、－ＣＨ＝ＣＨ－又は－Ｃ≡Ｃ－に置換された基であることが好ましく、炭素数２～２０のアルキレン基がより好ましい。
ＲＡ０２として選択し得る、アルキレン基は、直鎖アルキレン基であってもよく、分岐鎖アルキレン基であってもよいが、直鎖アルキレン基であることが好ましい。
また、当該アルキレン基の炭素数は、１～２０であるが、好ましくは１～１２、より好ましくは１～８、更に好ましくは１～４、より更に好ましくは１、２又は４、特に好ましくは２である。 Examples of the divalent organic group that can be selected as RA02 include an alkylene group having 1 to 20 carbon atoms, a cycloalkylene group, an alkenylene group having 1 to 20 carbon atoms, a cycloalkenylene group, an arylene group and the like. , At least one -CH 2 -structure of an alkylene group having 1 to 20 carbon atoms or an alkylene group having 1 to 20 carbon atoms (preferably 2 to 12, more preferably 2 to 8, still more preferably 2 to 4). Is preferably a group substituted with -O-, -S-, -COO-, -OCO-, -CSO-, -OCS-, -CH = CH- or -C≡C-, and has a carbon number of carbon. More preferably, 2 to 20 alkylene groups.
The alkylene group that can be selected as RA02 may be a linear alkylene group or a branched chain alkylene group, but a linear alkylene group is preferable.
The alkylene group has 1 to 20 carbon atoms, preferably 1 to 12, more preferably 1 to 8, still more preferably 1 to 4, still more preferably 1, 2 or 4, and particularly preferably. It is 2.
ＲＡ０２として選択し得る、アルキレン基は、直鎖アルキレン基であってもよく、分岐鎖アルキレン基であってもよいが、直鎖アルキレン基であることが好ましい。
また、当該アルキレン基の炭素数は、１～２０であるが、好ましくは１～１２、より好ましくは１～８、更に好ましくは１～４、より更に好ましくは１、２又は４、特に好ましくは２である。 Examples of the divalent organic group that can be selected as RA02 include an alkylene group having 1 to 20 carbon atoms, a cycloalkylene group, an alkenylene group having 1 to 20 carbon atoms, a cycloalkenylene group, an arylene group and the like. , At least one -CH 2 -structure of an alkylene group having 1 to 20 carbon atoms or an alkylene group having 1 to 20 carbon atoms (preferably 2 to 12, more preferably 2 to 8, still more preferably 2 to 4). Is preferably a group substituted with -O-, -S-, -COO-, -OCO-, -CSO-, -OCS-, -CH = CH- or -C≡C-, and has a carbon number of carbon. More preferably, 2 to 20 alkylene groups.
The alkylene group that can be selected as RA02 may be a linear alkylene group or a branched chain alkylene group, but a linear alkylene group is preferable.
The alkylene group has 1 to 20 carbon atoms, preferably 1 to 12, more preferably 1 to 8, still more preferably 1 to 4, still more preferably 1, 2 or 4, and particularly preferably. It is 2.
本発明の一態様の潤滑油組成物において、さらに耐摩耗性を向上させた潤滑油組成物とする観点から、成分（Ｃ）が、硫黄原子含有リン酸エステル及び硫黄原子含有亜リン酸エステルから選ばれる１種以上の硫黄リン系化合物（Ｃ１）を含むことが好ましい。
In the lubricating oil composition of one aspect of the present invention, from the viewpoint of obtaining a lubricating oil composition having further improved wear resistance, the component (C) is composed of a sulfur atom-containing phosphoric acid ester and a sulfur atom-containing subphosphate ester. It is preferable to contain one or more selected sulfur phosphorus-based compounds (C1).
本発明の一態様の潤滑油組成物において、さらに耐摩耗性を向上させた潤滑油組成物とする観点から、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９０～１００質量％、より更に好ましくは９５～１００質量％、特に好ましくは９８～１００質量％である。
In the lubricating oil composition of one aspect of the present invention, the content ratio of the component (C1) is the component (C) contained in the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved wear resistance. Based on the total amount (100% by mass) of, preferably 60 to 100% by mass, more preferably 70 to 100% by mass, more preferably 80 to 100% by mass, still more preferably 90 to 100% by mass, still more preferably 95. It is ~ 100% by mass, particularly preferably 98-100% by mass.
硫黄原子含有リン酸エステル及び硫黄原子含有亜リン酸エステルとしては、前記式（ii）で表される基を有する硫黄原子含有リン酸エステル及び硫黄原子含有亜リン酸エステルが挙げられる。
さらに耐摩耗性を向上させた潤滑油組成物とする観点から、本発明の一態様で用いる成分（Ｃ１）は、前記式（ii）で表される基を有する硫黄原子含有亜リン酸エステルが好ましく、下記一般式（ｃ－１１）で表される化合物（Ｃ１１）及び下記一般式（ｃ－１２）で表される化合物（Ｃ１２）が選ばれる１種以上がより好ましい。 Examples of the sulfur atom-containing phosphoric acid ester and the sulfur atom-containing subphosphate ester include a sulfur atom-containing phosphoric acid ester having a group represented by the above formula (ii) and a sulfur atom-containing subphosphate ester.
From the viewpoint of obtaining a lubricating oil composition having further improved wear resistance, the component (C1) used in one embodiment of the present invention is a sulfur atom-containing phosphite ester having a group represented by the above formula (ii). It is preferable that one or more of the compound (C11) represented by the following general formula (c-11) and the compound (C12) represented by the following general formula (c-12) are selected.
さらに耐摩耗性を向上させた潤滑油組成物とする観点から、本発明の一態様で用いる成分（Ｃ１）は、前記式（ii）で表される基を有する硫黄原子含有亜リン酸エステルが好ましく、下記一般式（ｃ－１１）で表される化合物（Ｃ１１）及び下記一般式（ｃ－１２）で表される化合物（Ｃ１２）が選ばれる１種以上がより好ましい。 Examples of the sulfur atom-containing phosphoric acid ester and the sulfur atom-containing subphosphate ester include a sulfur atom-containing phosphoric acid ester having a group represented by the above formula (ii) and a sulfur atom-containing subphosphate ester.
From the viewpoint of obtaining a lubricating oil composition having further improved wear resistance, the component (C1) used in one embodiment of the present invention is a sulfur atom-containing phosphite ester having a group represented by the above formula (ii). It is preferable that one or more of the compound (C11) represented by the following general formula (c-11) and the compound (C12) represented by the following general formula (c-12) are selected.
前記式（ｃ－１１）、（ｃ－１２）中、ＲＡ１１、ＲＡ２１及びＲＡ２２は、それぞれ独立に、水素原子又は炭素数１～２０のアルキル基である。
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が、直鎖アルキル基であることが好ましい。
また、当該アルキル基の炭素数は１～２０であるが、好ましくは２～１８、より好ましくは４～１６、更に好ましくは６～１２、より更に好ましくは８～１０である。
また、ａ１、ａ２及びａ３は、それぞれ独立に、１～２０の整数であるが、好ましくは１～１２の整数、より好ましくは１～８の整数、更に好ましくは１～４の整数、より更に好ましくは１、２又は４、特に好ましくは２である。 In the formulas (c-11) and (c-12), RA11 , RA21 and RA22 are each independently a hydrogen atom or an alkyl group having 1 to 20 carbon atoms.
The alkyl group may be a linear alkyl group or a branched chain alkyl group, but is preferably a straight chain alkyl group.
The alkyl group has 1 to 20 carbon atoms, preferably 2 to 18, more preferably 4 to 16, still more preferably 6 to 12, and even more preferably 8 to 10.
Further, a1, a2, and a3 are independently integers of 1 to 20, but preferably an integer of 1 to 12, more preferably an integer of 1 to 8, and even more preferably an integer of 1 to 4. It is preferably 1, 2 or 4, and particularly preferably 2.
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が、直鎖アルキル基であることが好ましい。
また、当該アルキル基の炭素数は１～２０であるが、好ましくは２～１８、より好ましくは４～１６、更に好ましくは６～１２、より更に好ましくは８～１０である。
また、ａ１、ａ２及びａ３は、それぞれ独立に、１～２０の整数であるが、好ましくは１～１２の整数、より好ましくは１～８の整数、更に好ましくは１～４の整数、より更に好ましくは１、２又は４、特に好ましくは２である。 In the formulas (c-11) and (c-12), RA11 , RA21 and RA22 are each independently a hydrogen atom or an alkyl group having 1 to 20 carbon atoms.
The alkyl group may be a linear alkyl group or a branched chain alkyl group, but is preferably a straight chain alkyl group.
The alkyl group has 1 to 20 carbon atoms, preferably 2 to 18, more preferably 4 to 16, still more preferably 6 to 12, and even more preferably 8 to 10.
Further, a1, a2, and a3 are independently integers of 1 to 20, but preferably an integer of 1 to 12, more preferably an integer of 1 to 8, and even more preferably an integer of 1 to 4. It is preferably 1, 2 or 4, and particularly preferably 2.
本発明の一態様の潤滑油組成物において、さらに耐摩耗性を向上させた潤滑油組成物とする観点から、成分（Ｃ）が、前記一般式（ｃ－１１）で表される化合物（Ｃ１１）及び前記一般式（ｃ－１２）で表される化合物（Ｃ１２）を共に含むことが更に好ましい。
本発明の一態様において、化合物（Ｃ１１）と、化合物（Ｃ１２）との含有量比〔（Ｃ１１）／（Ｃ１２）〕は、質量比で、好ましくは１／２０～２０／１、より好ましくは１／１６～１０／１、より好ましくは１／１４～５／１、更に好ましくは１／１２～２／１、より更に好ましくは１／１１～１／１、特に好ましくは１／１０～１／２である。 In the lubricating oil composition of one aspect of the present invention, from the viewpoint of obtaining a lubricating oil composition having further improved wear resistance, the component (C) is a compound (C11) represented by the general formula (c-11). ) And the compound (C12) represented by the general formula (c-12).
In one aspect of the present invention, the content ratio of the compound (C11) to the compound (C12) [(C11) / (C12)] is a mass ratio, 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, even more preferably 1/11 to 1/1, particularly preferably 1/10 to 1 / 2.
本発明の一態様において、化合物（Ｃ１１）と、化合物（Ｃ１２）との含有量比〔（Ｃ１１）／（Ｃ１２）〕は、質量比で、好ましくは１／２０～２０／１、より好ましくは１／１６～１０／１、より好ましくは１／１４～５／１、更に好ましくは１／１２～２／１、より更に好ましくは１／１１～１／１、特に好ましくは１／１０～１／２である。 In the lubricating oil composition of one aspect of the present invention, from the viewpoint of obtaining a lubricating oil composition having further improved wear resistance, the component (C) is a compound (C11) represented by the general formula (c-11). ) And the compound (C12) represented by the general formula (c-12).
In one aspect of the present invention, the content ratio of the compound (C11) to the compound (C12) [(C11) / (C12)] is a mass ratio, 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, even more preferably 1/11 to 1/1, particularly preferably 1/10 to 1 / 2.
なお、本発明の一態様で成分（Ｃ）として用いる酸性リン酸エステル及び酸性亜リン酸エステルは、アミン塩の形態であってもよい。
アミン塩を形成するアミンとしては、下記一般式（ｃ－ｉ）で表される化合物であることが好ましい。当該アミンは、単独で用いてもよく、２種以上を併用してもよい。
The acidic phosphate ester and the acidic subphosphate ester used as the component (C) in one aspect of the present invention may be in the form of an amine salt.
The amine forming the amine salt is preferably a compound represented by the following general formula (ci). The amine may be used alone or in combination of two or more.
アミン塩を形成するアミンとしては、下記一般式（ｃ－ｉ）で表される化合物であることが好ましい。当該アミンは、単独で用いてもよく、２種以上を併用してもよい。
The amine forming the amine salt is preferably a compound represented by the following general formula (ci). The amine may be used alone or in combination of two or more.
上記一般式（ｃ－ｉ）中、ｒは、１～３の整数であり、１であることが好ましい。
Ｒｘは、それぞれ独立に、炭素数６～１８のアルキル基、炭素数６～１８のアルケニル基、炭素数６～１８のアリール基、又は炭素数６～１８のヒドロキシアルキル基である。
なお、Ｒｘが複数存在する場合、複数のＲｘは、同一であってもよく、互いに異なっていてもよい。 In the above general formula (ci), r is an integer of 1 to 3, and is preferably 1.
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.
When a plurality of R x are present, the plurality of R x may be the same or different from each other.
Ｒｘは、それぞれ独立に、炭素数６～１８のアルキル基、炭素数６～１８のアルケニル基、炭素数６～１８のアリール基、又は炭素数６～１８のヒドロキシアルキル基である。
なお、Ｒｘが複数存在する場合、複数のＲｘは、同一であってもよく、互いに異なっていてもよい。 In the above general formula (ci), r is an integer of 1 to 3, and is preferably 1.
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.
When a plurality of R x are present, the plurality of R x may be the same or different from each other.
Ｒｘとして選択し得る、炭素数６～１８のアルキル基、炭素数６～１８のアルケニル基、及び炭素数６～１８のアリール基としては、上述のＲ１１～Ｒ１３及びＲ２１～Ｒ２３として選択し得るアルキル基、アルケニル基、及びアリール基として例示した基のうち、上記範囲の炭素数である基が挙げられる。
また、炭素数６～１８のヒドロキシアルキル基としては、炭素数６～１８のアルキル基が有する水素原子がヒドロキシ基に置換された基が挙げられ、具体的には、ヒドロキシヘキシル基、ヒドロキシオクチル基、ヒドロキシドデシル基、ヒドロキシトリデシル基等が挙げられる。 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 that can be selected as R x include the above-mentioned R 11 to R 13 and R 21 to R 23 . Among the groups exemplified as the alkyl group, the alkenyl group, and the aryl group which can be selected as the above group, a group having the number of carbon atoms in the above range can be mentioned.
Examples of the hydroxyalkyl group having 6 to 18 carbon atoms include a group in which the hydrogen atom of the alkyl group having 6 to 18 carbon atoms is replaced with a hydroxy group, and specifically, a hydroxyhexyl group and a hydroxyoctyl group. , Hydroxydodecyl group, hydroxytridecyl group and the like.
また、炭素数６～１８のヒドロキシアルキル基としては、炭素数６～１８のアルキル基が有する水素原子がヒドロキシ基に置換された基が挙げられ、具体的には、ヒドロキシヘキシル基、ヒドロキシオクチル基、ヒドロキシドデシル基、ヒドロキシトリデシル基等が挙げられる。 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 that can be selected as R x include the above-mentioned R 11 to R 13 and R 21 to R 23 . Among the groups exemplified as the alkyl group, the alkenyl group, and the aryl group which can be selected as the above group, a group having the number of carbon atoms in the above range can be mentioned.
Examples of the hydroxyalkyl group having 6 to 18 carbon atoms include a group in which the hydrogen atom of the alkyl group having 6 to 18 carbon atoms is replaced with a hydroxy group, and specifically, a hydroxyhexyl group and a hydroxyoctyl group. , Hydroxydodecyl group, hydroxytridecyl group and the like.
本発明の一態様の潤滑油組成物において、さらに耐摩耗性を向上させた潤滑油組成物とする観点から、成分（Ｃ）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０．０１質量％以上、より好ましくは０．０５質量％以上、更に好ましくは０．０７質量％以上、より更に好ましくは０．１０質量％以上、特に好ましくは０．１５質量％以上であり、さらに、０．１７質量％以上、０．２０質量％以上、０．２３質量％以上、０．２５質量％以上、０．２７質量％以上、又は０．３０質量％以上としてもよく、また、好ましくは３．０質量％以下、より好ましくは２．５質量％以下、更に好ましくは２．０質量％以下、より更に好ましくは１．５質量％以下、特に好ましくは１．２質量％以下であり、さらに、１．０質量％以下、０．９５質量％以下、０．９０質量％以下、０．８５質量％以下、０．８０質量％以下、０．７５質量％以下、０．７０質量％以下、０．６５質量％以下、０．６０質量％以下、０．５５質量％以下、又は０．５０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 the component (C) is the total amount (100% by mass) of the lubricating oil composition from the viewpoint of obtaining a lubricating oil composition having further improved wear resistance. By reference, it is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, further preferably 0.07% by mass or more, still more preferably 0.10% by mass or more, and particularly preferably 0.15% by mass. % Or more, and further, 0.17% by mass or more, 0.20% by mass or more, 0.23% by mass or more, 0.25% by mass or more, 0.27% by mass or more, or 0.30% by mass or more. It is also preferable, preferably 3.0% by mass or less, more preferably 2.5% by mass or less, still more preferably 2.0% by mass or less, still more preferably 1.5% by mass or less, and particularly preferably 1. 2% by mass or less, and further, 1.0% by mass or less, 0.95% by mass or less, 0.90% by mass or less, 0.85% by mass or less, 0.80% by mass or less, 0.75% by mass or less. , 0.70% by mass or less, 0.65% by mass or less, 0.60% by mass or less, 0.55% by mass or less, or 0.50% by mass or less.
本発明の一態様の潤滑油組成物において、さらに耐摩耗性を向上させた潤滑油組成物とする観点から、成分（Ｃ）のリン原子換算での含有量は、前記潤滑油組成物の全量（１００質量％）基準で、好ましくは３０質量ｐｐｍ以上、より好ましくは５０質量ｐｐｍ以上、より好ましくは７０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１２０質量ｐｐｍ以上、更に好ましくは１５０質量ｐｐｍ以上、更に好ましくは１８０質量ｐｐｍ以上、より更に好ましくは２００質量ｐｐｍ以上、より更に好ましくは２２０質量ｐｐｍ以上、より更に好ましくは２５０質量ｐｐｍ以上、特に好ましくは２７０質量ｐｐｍ以上であり、また、好ましくは８００質量ｐｐｍ以下、より好ましくは７００質量ｐｐｍ以下、更に好ましくは６００質量ｐｐｍ以下、より更に好ましくは５００質量ｐｐｍ以下、特に好ましくは４５０質量ｐｐｍ以下であり、さらに、４２０質量ｐｐｍ以下、４００質量ｐｐｍ以下、３８０質量ｐｐｍ以下、３７０質量ｐｐｍ以下、３６０質量ｐｐｍ以下、又は３５０質量ｐｐｍ以下としてもよい。
なお、本明細書において、リン原子の含有量は、ＪＰＩ－５Ｓ－３８－９２に準拠して測定した値を意味する。 In the lubricating oil composition of one aspect of the present invention, from the viewpoint of obtaining a lubricating oil composition having further improved wear resistance, the content of the component (C) in terms of phosphorus atom is the total mass of the lubricating oil composition. Based on (100% by mass), it is preferably 30% by mass or more, more preferably 50% by mass or more, more preferably 70% by mass or more, still more preferably 100% by mass or more, still more preferably 120% by mass or more, still more preferably. It is 150% by mass or more, more preferably 180% by mass or more, still more preferably 200% by mass or more, still more preferably 220% by mass or more, still more preferably 250% by mass or more, and particularly preferably 270% by mass or more. Further, it is preferably 800 mass ppm or less, more preferably 700 mass ppm or less, further preferably 600 mass ppm or less, still more preferably 500 mass ppm or less, particularly preferably 450 mass ppm or less, and further preferably 420 mass ppm or less. , 400 mass ppm or less, 380 mass ppm or less, 370 mass ppm or less, 360 mass ppm or less, or 350 mass ppm or less.
In addition, in this specification, the content of a phosphorus atom means a value measured according to JPI-5S-38-92.
なお、本明細書において、リン原子の含有量は、ＪＰＩ－５Ｓ－３８－９２に準拠して測定した値を意味する。 In the lubricating oil composition of one aspect of the present invention, from the viewpoint of obtaining a lubricating oil composition having further improved wear resistance, the content of the component (C) in terms of phosphorus atom is the total mass of the lubricating oil composition. Based on (100% by mass), it is preferably 30% by mass or more, more preferably 50% by mass or more, more preferably 70% by mass or more, still more preferably 100% by mass or more, still more preferably 120% by mass or more, still more preferably. It is 150% by mass or more, more preferably 180% by mass or more, still more preferably 200% by mass or more, still more preferably 220% by mass or more, still more preferably 250% by mass or more, and particularly preferably 270% by mass or more. Further, it is preferably 800 mass ppm or less, more preferably 700 mass ppm or less, further preferably 600 mass ppm or less, still more preferably 500 mass ppm or less, particularly preferably 450 mass ppm or less, and further preferably 420 mass ppm or less. , 400 mass ppm or less, 380 mass ppm or less, 370 mass ppm or less, 360 mass ppm or less, or 350 mass ppm or less.
In addition, in this specification, the content of a phosphorus atom means a value measured according to JPI-5S-38-92.
本発明の一態様の潤滑油組成物において、さらに耐摩耗性を向上させた潤滑油組成物とする観点から、成分（Ｃ）の硫黄原子換算での含有量は、前記潤滑油組成物の全量（１００質量％）基準で、好ましくは５０質量ｐｐｍ以上、より好ましくは７０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１２０質量ｐｐｍ以上、更に好ましくは１５０質量ｐｐｍ以上、更に好ましくは１８０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２２０質量ｐｐｍ以上、より更に好ましくは２５０質量ｐｐｍ以上、より更に好ましくは２７０質量ｐｐｍ以上、特に好ましくは３００質量ｐｐｍ以上であり、また、好ましくは８００質量ｐｐｍ以下、より好ましくは７００質量ｐｐｍ以下、更に好ましくは６００質量ｐｐｍ以下、より更に好ましくは５００質量ｐｐｍ以下、特に好ましくは４５０質量ｐｐｍ以下であり、さらに、４２０質量ｐｐｍ以下、４００質量ｐｐｍ以下、３８０質量ｐｐｍ以下、３７０質量ｐｐｍ以下、３６０質量ｐｐｍ以下、又は３５０質量ｐｐｍ以下としてもよい。
In the lubricating oil composition of one aspect of the present invention, from the viewpoint of making the lubricating oil composition further improved in wear resistance, the content of the component (C) in terms of sulfur atom is the total amount of the lubricating oil composition. On a (100 mass%) basis, it is preferably 50 mass ppm or more, more preferably 70 mass ppm or more, more preferably 100 mass ppm or more, more preferably 120 mass ppm or more, still more preferably 150 mass ppm or more, still more preferably. It is 180 mass ppm or more, more preferably 200 mass ppm or more, further preferably 220 mass ppm or more, still more preferably 250 mass ppm or more, still more preferably 270 mass ppm or more, and particularly preferably 300 mass ppm or more. Further, it is preferably 800 mass ppm or less, more preferably 700 mass ppm or less, further preferably 600 mass ppm or less, still more preferably 500 mass ppm or less, particularly preferably 450 mass ppm or less, and further preferably 420 mass ppm or less. , 400 mass ppm or less, 380 mass ppm or less, 370 mass ppm or less, 360 mass ppm or less, or 350 mass ppm or less.
なお、本明細書において、リン原子の含有量は、ＪＰＩ－５Ｓ－３８－９２に準拠して測定した値を意味する。
In the present specification, the phosphorus atom content means a value measured according to JPI-5S-38-92.
本発明の一態様の潤滑油組成物において、硫黄原子非含有の酸性リン酸エステルのリ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、１００質量ｐｐｍ未満、５０質量ｐｐｍ未満、１０質量ｐｐｍ未満、８質量ｐｐｍ未満、５質量ｐｐｍ未満、３質量ｐｐｍ未満、又は１質量ｐｐｍ未満としてもよい。
In the lubricating oil composition of one aspect of the present invention, the content of the sulfur atom-free acidic phosphoric acid ester in terms of phosphorus atom is less than 100% by mass based on the total amount (100% by mass) of the lubricating oil composition. , Less than 50 mass ppm, less than 10 mass ppm, less than 8 mass ppm, less than 5 mass ppm, less than 3 mass ppm, or less than 1 mass ppm.
また、本発明の一態様の潤滑油組成物において、硫黄原子非含有の中性リン酸エステルのリ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、５０質量ｐｐｍ未満、１０質量ｐｐｍ未満、８質量ｐｐｍ未満、５質量ｐｐｍ未満、３質量ｐｐｍ未満、又は１質量ｐｐｍ未満としてもよい。
Further, in the lubricating oil composition of one aspect of the present invention, the content of the neutral phosphoric acid ester containing no sulfur atom in terms of phosphorus atom is 50 based on the total amount (100% by mass) of the lubricating oil composition. It may be less than mass ppm, less than 10 mass ppm, less than 8 mass ppm, less than 5 mass ppm, less than 3 mass ppm, or less than 1 mass ppm.
＜成分（Ｂ）～（Ｃ）以外の各種添加剤＞
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、成分（Ｂ）～（Ｃ）以外の各種添加剤を含有してもよい。
このような各種添加剤としては、例えば、酸化防止剤、金属系清浄剤、無灰系分散剤、金属不活性化剤、防錆剤、消泡剤、流動点降下剤等が挙げられる。
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。 <Various additives other than ingredients (B) to (C)>
The lubricating oil composition of one aspect of the present invention may contain various additives other than the components (B) to (C), if necessary, as long as the effects of the present invention are not impaired.
Examples of such additives include antioxidants, metal detergents, ashless dispersants, metal deactivating agents, rust inhibitors, defoaming agents, pour point lowering agents and the like.
These lubricant 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、成分（Ｂ）～（Ｃ）以外の各種添加剤を含有してもよい。
このような各種添加剤としては、例えば、酸化防止剤、金属系清浄剤、無灰系分散剤、金属不活性化剤、防錆剤、消泡剤、流動点降下剤等が挙げられる。
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。 <Various additives other than ingredients (B) to (C)>
The lubricating oil composition of one aspect of the present invention may contain various additives other than the components (B) to (C), if necessary, as long as the effects of the present invention are not impaired.
Examples of such additives include antioxidants, metal detergents, ashless dispersants, metal deactivating agents, rust inhibitors, defoaming agents, pour point lowering agents and the like.
These lubricant 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、適宜調整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 additives for lubricating oil can be appropriately adjusted within a range that does not impair the effects of the present invention, but each addition is based on the total amount (100% by mass) of the lubricating oil composition. Independently for each agent, it is usually 0.001 to 15% by mass, preferably 0.005 to 10% by mass, and more preferably 0.01 to 5% by mass.
［酸化防止剤］
本発明の一態様の潤滑油組成物は、さらに酸化防止剤を含有してもよい。酸化防止剤は、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酸化防止剤としては、例えば、アルキル化ジフェニルアミン、フェニルナフチルアミン、アルキル化フェニルナフチルアミン等のアミン系酸化防止剤；２、６－ジ－ｔ－ブチルフェノール、４，４’－メチレンビス（２，６ージーｔーブチルフェノール）、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、ｎ－オクタデシル－３－（３，５－ジ－ｔ－ブチル－４－ヒドロキシフェニル）プロピオネート等のフェノール系酸化防止剤；等が挙げられる。
本発明の一態様の潤滑油組成物において、酸化防止剤は、アミン系酸化防止剤とフェノール系酸化防止剤とを併用することが好ましい。 [Antioxidant]
The lubricating oil composition of one aspect of the present invention may further contain an antioxidant. The antioxidant may be used alone or in combination of two or more.
Examples of the antioxidant used in one embodiment of the present invention include amine-based antioxidants such as alkylated diphenylamine, phenylnaphthylamine, and alkylated phenylnaphthylamine; 2,6-di-t-butylphenol, 4,4'-methylenebis. (2,6-G-t-butylphenol), Isooctyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate, n-octadecyl-3- (3,5-di-t-butyl-4) -Hydroxyphenyl) Phenolic antioxidants such as propionate; etc.
In the lubricating oil composition of one aspect of the present invention, it is preferable that the antioxidant is a combination of an amine-based antioxidant and a phenol-based antioxidant.
本発明の一態様の潤滑油組成物は、さらに酸化防止剤を含有してもよい。酸化防止剤は、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酸化防止剤としては、例えば、アルキル化ジフェニルアミン、フェニルナフチルアミン、アルキル化フェニルナフチルアミン等のアミン系酸化防止剤；２、６－ジ－ｔ－ブチルフェノール、４，４’－メチレンビス（２，６ージーｔーブチルフェノール）、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、ｎ－オクタデシル－３－（３，５－ジ－ｔ－ブチル－４－ヒドロキシフェニル）プロピオネート等のフェノール系酸化防止剤；等が挙げられる。
本発明の一態様の潤滑油組成物において、酸化防止剤は、アミン系酸化防止剤とフェノール系酸化防止剤とを併用することが好ましい。 [Antioxidant]
The lubricating oil composition of one aspect of the present invention may further contain an antioxidant. The antioxidant may be used alone or in combination of two or more.
Examples of the antioxidant used in one embodiment of the present invention include amine-based antioxidants such as alkylated diphenylamine, phenylnaphthylamine, and alkylated phenylnaphthylamine; 2,6-di-t-butylphenol, 4,4'-methylenebis. (2,6-G-t-butylphenol), Isooctyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate, n-octadecyl-3- (3,5-di-t-butyl-4) -Hydroxyphenyl) Phenolic antioxidants such as propionate; etc.
In the lubricating oil composition of one aspect of the present invention, it is preferable that the antioxidant is a combination of an amine-based antioxidant and a phenol-based antioxidant.
［金属系清浄剤］
本発明の一態様の潤滑油組成物は、さらに金属系清浄剤を含有してもよい。金属系清浄剤は、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系清浄剤としては、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。 [Metallic cleaner]
The lubricating oil composition of one aspect of the present invention may further contain a metal-based detergent. The metal-based cleaning agent may be used alone or in combination of two or more.
Examples of the metal-based detergent used in one embodiment of the present invention include metal salts such as metal sulfonate, metal salicylate, and metal phenate. Further, as the metal atom constituting the metal salt, a metal atom selected from an alkali metal and an alkaline earth metal is preferable, sodium, calcium, magnesium or barium is more preferable, and calcium is further preferable.
本発明の一態様の潤滑油組成物は、さらに金属系清浄剤を含有してもよい。金属系清浄剤は、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系清浄剤としては、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。 [Metallic cleaner]
The lubricating oil composition of one aspect of the present invention may further contain a metal-based detergent. The metal-based cleaning agent may be used alone or in combination of two or more.
Examples of the metal-based detergent used in one embodiment of the present invention include metal salts such as metal sulfonate, metal salicylate, and metal phenate. Further, as the metal atom constituting the metal salt, a metal atom selected from an alkali metal and an alkaline earth metal is preferable, sodium, calcium, magnesium or barium is more preferable, and calcium is further preferable.
本発明の一態様の潤滑油組成物において、金属系清浄剤は、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、カルシウムスルホネートを含むことがより好ましい。
カルシウムスルホネ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。 In the lubricating oil composition of one aspect of the present invention, 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 ratio of calcium sulfonate is preferably 50 to 100% by mass, more preferably 60 to 100% by mass, still more preferably 70, based on the total amount (100% by mass) of the metal-based detergent contained in the lubricating oil composition. It is ~ 100% by mass, more preferably 80-100% by mass.
カルシウムスルホネ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。 In the lubricating oil composition of one aspect of the present invention, 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 ratio of calcium sulfonate is preferably 50 to 100% by mass, more preferably 60 to 100% by mass, still more preferably 70, based on the total amount (100% by mass) of the metal-based detergent contained in the lubricating oil composition. It is ~ 100% by mass, more preferably 80-100% by mass.
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。
ただし、本発明の一態様の潤滑油組成物において、金属系清浄剤は、塩基価が１００ｍｇＫＯＨ／ｇ以上の過塩基性金属系清浄剤であることが好ましい。
過塩基性金属系清浄剤の塩基価としては、１００ｍｇＫＯＨ／ｇ以上であるが、好ましくは１５０～５００ｍｇＫＯＨ／ｇ、より好ましくは２００～４５０ｍｇＫＯＨ／ｇである。
なお、本明細書において、「塩基価」とは、ＪＩＳ Ｋ２５０１：２００３「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過塩素酸法による塩基価を意味する。 The base value of the metal-based detergent is preferably 0 to 600 mgKOH / g.
However, in the lubricating oil composition of one aspect of the present invention, the metal-based cleaning agent is preferably a hyperbasic metal-based cleaning agent having a base value of 100 mgKOH / g or more.
The base value of the superbasic metal-based detergent is 100 mgKOH / g or more, preferably 150 to 500 mgKOH / g, and more preferably 200 to 450 mgKOH / g.
In the present specification, the “base value” is defined as 7. of JIS K2501: 2003 “Petroleum products and lubricating oil-neutralization value test method”. It means the base value by the perchloric acid method measured according to.
ただし、本発明の一態様の潤滑油組成物において、金属系清浄剤は、塩基価が１００ｍｇＫＯＨ／ｇ以上の過塩基性金属系清浄剤であることが好ましい。
過塩基性金属系清浄剤の塩基価としては、１００ｍｇＫＯＨ／ｇ以上であるが、好ましくは１５０～５００ｍｇＫＯＨ／ｇ、より好ましくは２００～４５０ｍｇＫＯＨ／ｇである。
なお、本明細書において、「塩基価」とは、ＪＩＳ Ｋ２５０１：２００３「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過塩素酸法による塩基価を意味する。 The base value of the metal-based detergent is preferably 0 to 600 mgKOH / g.
However, in the lubricating oil composition of one aspect of the present invention, the metal-based cleaning agent is preferably a hyperbasic metal-based cleaning agent having a base value of 100 mgKOH / g or more.
The base value of the superbasic metal-based detergent is 100 mgKOH / g or more, preferably 150 to 500 mgKOH / g, and more preferably 200 to 450 mgKOH / g.
In the present specification, the “base value” is defined as 7. of JIS K2501: 2003 “Petroleum products and lubricating oil-neutralization value test method”. It means the base value by the perchloric acid method measured according to.
［無灰系分散剤］
本発明の一態様の潤滑油組成物は、成分（Ｂ）及び成分（Ｃ）の分散性を良好とする観点から、さらに無灰系分散剤を含有してもよい。無灰系分散剤は、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無灰系分散剤としては、アルケニルコハク酸イミドが好ましく、例えば、下記一般式（ｄ－１）で表されるアルケニルコハク酸ビスイミド、下記一般式（ｄ－２）で表されるアルケニルコハク酸モノイミド等が挙げられる。 [Ashless dispersant]
The lubricating oil composition of one aspect of the present invention may further contain an ashless dispersant from the viewpoint of improving the dispersibility of the component (B) and the component (C). The ashless dispersant may be used alone or in combination of two or more.
As the ashless dispersant used in one embodiment of the present invention, alkenyl succinate imide is preferable, and for example, alkenyl succinate bisimide represented by the following general formula (d-1) and the following general formula (d-2). Examples thereof include alkenyl succinic acid monoimide represented.
本発明の一態様の潤滑油組成物は、成分（Ｂ）及び成分（Ｃ）の分散性を良好とする観点から、さらに無灰系分散剤を含有してもよい。無灰系分散剤は、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無灰系分散剤としては、アルケニルコハク酸イミドが好ましく、例えば、下記一般式（ｄ－１）で表されるアルケニルコハク酸ビスイミド、下記一般式（ｄ－２）で表されるアルケニルコハク酸モノイミド等が挙げられる。 [Ashless dispersant]
The lubricating oil composition of one aspect of the present invention may further contain an ashless dispersant from the viewpoint of improving the dispersibility of the component (B) and the component (C). The ashless dispersant may be used alone or in combination of two or more.
As the ashless dispersant used in one embodiment of the present invention, alkenyl succinate imide is preferable, and for example, alkenyl succinate bisimide represented by the following general formula (d-1) and the following general formula (d-2). Examples thereof include alkenyl succinic acid monoimide represented.
上記一般式（ｄ－１）及び（ｄ－２）中、Ｒａ１、Ｒａ２及びＲａ３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。
Ｒａ１、Ｒａ２及びＲａ３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。
Ｒｂ１、Ｒｂ２及びＲｂ３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 general formulas (d-1) and ( d -2), Ra1, Ra2 , and Ra3 are independently alkenyl groups having a mass average molecular weight (Mw) of 500 to 3000 (preferably 900 to 2500). Is.
Examples of the alkenyl group that can be selected as R a1 , Ra 2 and Ra 3 include a polybutenyl group, a polyisobutenyl group, an ethylene-propylene copolymer and the like, and among these, a polybutenyl group or a polyisobutenyl group is preferable.
R b1 , R b2 , and R b3 are independently alkylene groups 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.
Ｒａ１、Ｒａ２及びＲａ３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。
Ｒｂ１、Ｒｂ２及びＲｂ３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 general formulas (d-1) and ( d -2), Ra1, Ra2 , and Ra3 are independently alkenyl groups having a mass average molecular weight (Mw) of 500 to 3000 (preferably 900 to 2500). Is.
Examples of the alkenyl group that can be selected as R a1 , Ra 2 and Ra 3 include a polybutenyl group, a polyisobutenyl group, an ethylene-propylene copolymer and the like, and among these, a polybutenyl group or a polyisobutenyl group is preferable.
R b1 , R b2 , and R b3 are independently alkylene groups 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.
なお、前記一般式（ｄ－１）又は（ｄ－２）で表される化合物は、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、変性アルケニルコハク酸イミドであってもよい。
The compound represented by the general formula (d-1) or (d-2) is one or more selected from boron compounds, alcohols, aldehydes, ketones, alkylphenols, cyclic carbonates, epoxy compounds, organic acids and the like. It may be a modified alkenyl succinimide reacted with.
［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系化合物、トリルトリアゾール系化合物、イミダゾール系化合物、ピリミジン系化合物等が挙げられる。 [Metal inactivating agent]
The lubricating oil composition of one aspect of the present invention may further contain a metal inactivating agent. The metal inactivating agent may be used alone or in combination of two or more.
Examples of the metal inactivating agent used in one embodiment of the present invention include benzotriazole-based compounds, tolyltriazole-based compounds, imidazole-based compounds, pyrimidine-based compounds 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系化合物、トリルトリアゾール系化合物、イミダゾール系化合物、ピリミジン系化合物等が挙げられる。 [Metal inactivating agent]
The lubricating oil composition of one aspect of the present invention may further contain a metal inactivating agent. The metal inactivating agent may be used alone or in combination of two or more.
Examples of the metal inactivating agent used in one embodiment of the present invention include benzotriazole-based compounds, tolyltriazole-based compounds, imidazole-based compounds, pyrimidine-based compounds and the like.
［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 aspect of the present invention may further contain a rust inhibitor. The rust inhibitor 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 sucrose, 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 aspect of the present invention may further contain a rust inhibitor. The rust inhibitor 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 sucrose, 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、シリコーン油、フルオロシリコーン油及びフルオロアルキルエーテル等が挙げられる。 [Defoamer]
The lubricating oil composition of one aspect of the present invention may further contain an antifoaming agent. The defoaming agent may be used alone or in combination of two or more.
Examples of the defoaming agent used in one aspect of the present invention include silicone oil, fluorosilicone oil, fluoroalkyl ether 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、シリコーン油、フルオロシリコーン油及びフルオロアルキルエーテル等が挙げられる。 [Defoamer]
The lubricating oil composition of one aspect of the present invention may further contain an antifoaming agent. The defoaming agent may be used alone or in combination of two or more.
Examples of the defoaming agent used in one aspect of the present invention include silicone oil, fluorosilicone oil, fluoroalkyl ether and the like.
［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。 [Pour point depressant]
The lubricating oil composition of one aspect of the present invention may further contain a pour point lowering agent. The pour point lowering agent may be used alone or in combination of two or more.
Examples of the pour point lowering agent used in one embodiment of the present invention include ethylene-vinyl acetate copolymer, condensate of chlorinated paraffin and naphthalene, condensate of chlorinated paraffin and phenol, polymethacrylate, and polyalkylstyrene. And so on.
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。 [Pour point depressant]
The lubricating oil composition of one aspect of the present invention may further contain a pour point lowering agent. The pour point lowering agent may be used alone or in combination of two or more.
Examples of the pour point lowering agent used in one embodiment of the present invention include ethylene-vinyl acetate copolymer, condensate of chlorinated paraffin and naphthalene, condensate of chlorinated paraffin and phenol, polymethacrylate, and polyalkylstyrene. And so on.
＜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、
成分（Ａ）に、成分（Ｂ）を配合すると共に、硫化オレフィンの含有量が、前記潤滑油組成物の全量基準で、０．２０質量％未満であり、前記潤滑油組成物の１００℃における動粘度が２．１ｍｍ２／ｓ以上５．０ｍｍ２／ｓ未満となるように調製する工程を有することが好ましい。
なお、成分（Ａ）に成分（Ｂ）を配合する際に、必要に応じて、成分（Ｃ）及び成分（Ｂ）～（Ｃ）以外の他の各種添加剤を配合することが好ましい。
ここで、成分（Ａ）、（Ｂ）及び（Ｃ）、並びに各種添加剤の好適な化合物及び配合量は、上述のとおりである。 <Manufacturing method of lubricating oil composition>
The method for producing the lubricating oil composition according to one aspect of the present invention is not particularly limited, but from the viewpoint of productivity, there is no particular limitation.
The component (B) is blended with the component (A), and the content of the olefin sulfide is less than 0.20% by mass based on the total amount of the lubricating oil composition at 100 ° C. of the lubricating oil composition. It is preferable to have a step of adjusting the kinematic viscosity to be 2.1 mm 2 / s or more and less than 5.0 mm 2 / s.
When the component (B) is added to the component (A), it is preferable to add various additives other than the component (C) and the components (B) to (C), if necessary.
Here, the suitable compounds and blending amounts of the components (A), (B) and (C), and various additives are as described above.
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、
成分（Ａ）に、成分（Ｂ）を配合すると共に、硫化オレフィンの含有量が、前記潤滑油組成物の全量基準で、０．２０質量％未満であり、前記潤滑油組成物の１００℃における動粘度が２．１ｍｍ２／ｓ以上５．０ｍｍ２／ｓ未満となるように調製する工程を有することが好ましい。
なお、成分（Ａ）に成分（Ｂ）を配合する際に、必要に応じて、成分（Ｃ）及び成分（Ｂ）～（Ｃ）以外の他の各種添加剤を配合することが好ましい。
ここで、成分（Ａ）、（Ｂ）及び（Ｃ）、並びに各種添加剤の好適な化合物及び配合量は、上述のとおりである。 <Manufacturing method of lubricating oil composition>
The method for producing the lubricating oil composition according to one aspect of the present invention is not particularly limited, but from the viewpoint of productivity, there is no particular limitation.
The component (B) is blended with the component (A), and the content of the olefin sulfide is less than 0.20% by mass based on the total amount of the lubricating oil composition at 100 ° C. of the lubricating oil composition. It is preferable to have a step of adjusting the kinematic viscosity to be 2.1 mm 2 / s or more and less than 5.0 mm 2 / s.
When the component (B) is added to the component (A), it is preferable to add various additives other than the component (C) and the components (B) to (C), if necessary.
Here, the suitable compounds and blending amounts of the components (A), (B) and (C), and various additives are as described above.
〔潤滑油組成物の性状〕
本発明の一態様の潤滑油組成物の粘度指数としては、好ましくは８０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以上である。 [Characteristics of lubricating oil composition]
The viscosity index of the lubricating oil composition according to one aspect of the present invention is preferably 80 or more, more preferably 90 or more, still more preferably 100 or more, still more preferably 110 or more.
本発明の一態様の潤滑油組成物の粘度指数としては、好ましくは８０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以上である。 [Characteristics of lubricating oil composition]
The viscosity index of the lubricating oil composition according to one aspect of the present invention is preferably 80 or more, more preferably 90 or more, still more preferably 100 or more, still more preferably 110 or more.
また、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、１００質量ｐｐｍ未満、５０質量ｐｐｍ未満、３０質量ｐｐｍ未満、２０質量ｐｐｍ未満、１０質量ｐｐｍ未満、７質量ｐｐｍ未満、５質量ｐｐｍ未満、３質量ｐｐｍ未満、又は２質量ｐｐｍ未満としてもよい。
本明細書において、モリブデンの含有量は、ＪＰＩ－５Ｓ－３８－９２に準拠して測定された値を意味する。 Further, in the lubricating oil composition of one aspect of the present invention, the content of molybdenum atom is less than 100% by mass, less than 50% by mass, and less than 30% by mass based on the total amount (100% by mass) of the lubricating oil composition. , Less than 20% by mass, less than 10% by mass, less than 7% by mass, less than 5% by mass, less than 3% by mass, or less than 2% by mass.
In the present specification, the molybdenum content means a value measured according to JPI-5S-38-92.
本明細書において、モリブデンの含有量は、ＪＰＩ－５Ｓ－３８－９２に準拠して測定された値を意味する。 Further, in the lubricating oil composition of one aspect of the present invention, the content of molybdenum atom is less than 100% by mass, less than 50% by mass, and less than 30% by mass based on the total amount (100% by mass) of the lubricating oil composition. , Less than 20% by mass, less than 10% by mass, less than 7% by mass, less than 5% by mass, less than 3% by mass, or less than 2% by mass.
In the present specification, the molybdenum content means a value measured according to JPI-5S-38-92.
本発明の一態様の潤滑油組成物の引火点は、安全性に優れる潤滑油組成物とする観点から、好ましくは１６０℃以上、より好ましくは１６４℃以上、更に好ましくは１７０℃以上、より更に好ましくは１７４℃以上、特に好ましくは１８０℃以上であり、また、３００℃以下、２８０℃以下、２６０℃以下、又は２５０℃以下であってもよい。
なお、本明細書において、引火点は、ＡＳＴＭ Ｄ９２に準拠し、クリーブランド開放式（ＣＯＣ）法により測定した値を意味する。 The flash point of the lubricating oil composition according to one aspect of the present invention is preferably 160 ° C. or higher, more preferably 164 ° C. or higher, still more preferably 170 ° C. or higher, and further, from the viewpoint of obtaining a lubricating oil composition having excellent safety. It is preferably 174 ° C. or higher, particularly preferably 180 ° C. or higher, and may be 300 ° C. or lower, 280 ° C. or lower, 260 ° C. or lower, or 250 ° C. or lower.
In this specification, the flash point means a value measured by the Cleveland open method (COC) method in accordance with ASTM D92.
なお、本明細書において、引火点は、ＡＳＴＭ Ｄ９２に準拠し、クリーブランド開放式（ＣＯＣ）法により測定した値を意味する。 The flash point of the lubricating oil composition according to one aspect of the present invention is preferably 160 ° C. or higher, more preferably 164 ° C. or higher, still more preferably 170 ° C. or higher, and further, from the viewpoint of obtaining a lubricating oil composition having excellent safety. It is preferably 174 ° C. or higher, particularly preferably 180 ° C. or higher, and may be 300 ° C. or lower, 280 ° C. or lower, 260 ° C. or lower, or 250 ° C. or lower.
In this specification, the flash point means a value measured by the Cleveland open method (COC) method in accordance with ASTM D92.
本発明の一態様の潤滑油組成物のアニリン点は、成分（Ｂ）の溶解性を向上させる観点から、好ましくは８０～１２０℃、より好ましくは８５～１１８℃、更に好ましくは９０～１１５℃、より更に好ましくは９５～１１２℃、特に好ましくは１００～１１０℃である。
なお、本明細書において、アニリン点は、ＡＳＴＭ Ｄ６１１に準拠して測定した値を意味する。 The aniline point of the lubricating oil composition of one aspect of the present invention is preferably 80 to 120 ° C., more preferably 85 to 118 ° C., still more preferably 90 to 115 ° C. from the viewpoint of improving the solubility of the component (B). , More preferably 95 to 112 ° C, and particularly preferably 100 to 110 ° C.
In this specification, the aniline point means a value measured according to ASTM D611.
なお、本明細書において、アニリン点は、ＡＳＴＭ Ｄ６１１に準拠して測定した値を意味する。 The aniline point of the lubricating oil composition of one aspect of the present invention is preferably 80 to 120 ° C., more preferably 85 to 118 ° C., still more preferably 90 to 115 ° C. from the viewpoint of improving the solubility of the component (B). , More preferably 95 to 112 ° C, and particularly preferably 100 to 110 ° C.
In this specification, the aniline point means a value measured according to ASTM D611.
本発明の一態様の潤滑油組成物について、ＪＩＳ Ｋ２２４２に準拠し、後述の実施例に記載のとおり、２００℃に加熱した銀棒を、８０℃に加熱した２００ｍＬの当該潤滑油組成物に入れ、１２秒後の銀棒の表面温度は、好ましくは１５０．０℃以下、より好ましくは１４９．０℃以下、更に好ましくは１４８．０℃以下、より更に好ましくは１４７．０℃以下、特に好ましくは１４６．０℃以下である。
The lubricating oil composition according to one aspect of the present invention is in accordance with JIS K2242, and as described in Examples described later, a silver rod heated to 200 ° C. is placed in 200 mL of the lubricating oil composition heated to 80 ° C. The surface temperature of the silver rod after 12 seconds is preferably 150.0 ° C. or lower, more preferably 149.0 ° C. or lower, still more preferably 148.0 ° C. or lower, still more preferably 147.0 ° C. or lower, particularly preferably. Is 146.0 ° C. or lower.
本発明の一態様の潤滑油組成物について、ＡＳＴＭ Ｄ５１８２に準拠し、後述の実施例に記載の条件下で測定したスカッフィングが発生した際の荷重のステージは、好ましくは５以上、より好ましくは６以上、更に好ましくは７以上、より更に好ましくは８以上である。
For the lubricating oil composition of one aspect of the present invention, the load stage when scuffing is generated, which is measured under the conditions described in Examples described later in accordance with ASTM D5182, is preferably 5 or more, more preferably 6. The above is more preferably 7 or more, still more preferably 8 or more.
本発明の一態様の潤滑油組成物について、ＪＩＳ Ｃ２１０１に準拠し、後述の実施例に記載条件下で測定した、当該潤滑油組成物の体積抵抗率は、好ましくは２．０×１０７Ω・ｍ以上、より好ましくは２．２×１０７Ω・ｍ以上、更に好ましくは２．４×１０７Ω・ｍ以上、より更に好ましくは２．８×１０７Ω・ｍ以上、特に好ましくは３．０×１０７Ω・ｍ以上であり、また、通常１．０×１０9Ω・ｍ以下である。
With respect to the lubricating oil composition of one aspect of the present invention, the volume resistivity of the lubricating oil composition measured under the conditions described in Examples described later in accordance with JIS C2101 is preferably 2.0 × 107 Ω. M or more, more preferably 2.2 × 10 7 Ω · m or more, further preferably 2.4 × 10 7 Ω · m or more, still more preferably 2.8 × 10 7 Ω · m or more, particularly preferably. It is 3.0 × 10 7 Ω ・ m or more, and usually 1.0 × 10 9 Ω ・ m or less.
本発明の一態様の潤滑油組成物について、ＪＩＳ Ｋ２５１４に準拠するＩＳＯＴ試験を、銅片を触媒として用いて、後述の実施例に記載のとおり、温度１５０℃、７２時間行った際の当該潤滑油組成物の銅溶出量は、好ましくは７０質量ｐｐｍ以下、より好ましくは６０質量ｐｐｍ以下、更に好ましくは５０質量ｐｐｍ以下、より更に好ましくは４０質量ｐｐｍ以下、特に好ましくは３５質量ｐｐｍ以下である。
なお、本明細書において、銅溶出量は、ＪＰＩ－５Ｓ－３８－９２に準拠して測定した値を意味する。 The lubricating oil composition according to one aspect of the present invention is lubricated when an ISOT test based on JIS K2514 is carried out at a temperature of 150 ° C. for 72 hours using a copper piece as a catalyst as described in Examples described later. The copper elution amount of the oil composition is preferably 70% by mass or less, more preferably 60% by mass or less, further preferably 50% by mass or less, still more preferably 40% by mass or less, and particularly preferably 35% by mass or less. ..
In this specification, the copper elution amount means a value measured according to JPI-5S-38-92.
なお、本明細書において、銅溶出量は、ＪＰＩ－５Ｓ－３８－９２に準拠して測定した値を意味する。 The lubricating oil composition according to one aspect of the present invention is lubricated when an ISOT test based on JIS K2514 is carried out at a temperature of 150 ° C. for 72 hours using a copper piece as a catalyst as described in Examples described later. The copper elution amount of the oil composition is preferably 70% by mass or less, more preferably 60% by mass or less, further preferably 50% by mass or less, still more preferably 40% by mass or less, and particularly preferably 35% by mass or less. ..
In this specification, the copper elution amount means a value measured according to JPI-5S-38-92.
〔潤滑油組成物の用途〕
本発明の好適な一態様の潤滑油組成物は、冷却性、耐スカッフィング性、及び絶縁性をバランス良く向上させ得る。
このような特性を考慮し、本発明の一態様の潤滑油組成物は、例えば、エンジン、変速機、減速機、圧縮機、油圧装置等の各種装置に組み込まれている、トルクコンバータ、湿式クラッチ、歯車軸受機構、オイルポンプ、油圧制御機構等の機構における潤滑に好適に使用することができる。これらの中でも、本発明の一態様の潤滑油組成物は、減速機の潤滑に用いられることが好ましい。 [Use of lubricating oil composition]
The lubricating oil composition of one preferred embodiment of the present invention can improve cooling property, scuffing resistance, and insulating property in a well-balanced manner.
In consideration of such characteristics, the lubricating oil composition of one aspect of the present invention is incorporated in various devices such as an engine, a transmission, a speed reducer, a compressor, and a hydraulic device, such as a torque converter and a wet clutch. , Gear bearing mechanism, oil pump, hydraulic control mechanism and other mechanisms can be suitably used for lubrication. Among these, the lubricating oil composition according to one aspect of the present invention is preferably used for lubricating the speed reducer.
本発明の好適な一態様の潤滑油組成物は、冷却性、耐スカッフィング性、及び絶縁性をバランス良く向上させ得る。
このような特性を考慮し、本発明の一態様の潤滑油組成物は、例えば、エンジン、変速機、減速機、圧縮機、油圧装置等の各種装置に組み込まれている、トルクコンバータ、湿式クラッチ、歯車軸受機構、オイルポンプ、油圧制御機構等の機構における潤滑に好適に使用することができる。これらの中でも、本発明の一態様の潤滑油組成物は、減速機の潤滑に用いられることが好ましい。 [Use of lubricating oil composition]
The lubricating oil composition of one preferred embodiment of the present invention can improve cooling property, scuffing resistance, and insulating property in a well-balanced manner.
In consideration of such characteristics, the lubricating oil composition of one aspect of the present invention is incorporated in various devices such as an engine, a transmission, a speed reducer, a compressor, and a hydraulic device, such as a torque converter and a wet clutch. , Gear bearing mechanism, oil pump, hydraulic control mechanism and other mechanisms can be suitably used for lubrication. Among these, the lubricating oil composition according to one aspect of the present invention is preferably used for lubricating the speed reducer.
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［１］及び［２］も提供し得る。
［１］基油（Ａ）及びチアジアゾール系化合物（Ｂ）を含有し、硫化オレフィンの含有量が０．２０質量％未満であり、１００℃における動粘度が２．１ｍｍ２／ｓ以上５．０ｍｍ２／ｓ未満である、潤滑油組成物を用いた、減速機。
［２］基油（Ａ）及びチアジアゾール系化合物（Ｂ）を含有し、硫化オレフィンの含有量が０．２０質量％未満であり、１００℃における動粘度が２．１ｍｍ２／ｓ以上５．０ｍｍ２／ｓ未満である、潤滑油組成物を減速機の潤滑に適用する、潤滑油組成物の使用。
上記［１］及び［２］に記載の潤滑油組成物の好適な態様は、上述のとおりである。 In addition, considering the above-mentioned characteristics of the lubricating oil composition of one aspect of the present invention, the present invention may also provide the following [1] and [2].
[1] Contains the base oil (A) and the thiadiazole compound (B), the content of olefin sulfide is less than 0.20% by mass, and the kinematic viscosity at 100 ° C. is 2.1 mm 2 / s or more and 5.0 mm. Reducer with lubricating oil composition less than 2 / s.
[2] Contains the base oil (A) and the thiadiazol-based compound (B), the content of olefin sulfide is less than 0.20% by mass, and the kinematic viscosity at 100 ° C. is 2.1 mm 2 / s or more and 5.0 mm. Use of a lubricating oil composition that applies a lubricating oil composition to lubricate a speed reducer, which is less than 2 / s.
The preferred embodiments of the lubricating oil composition according to the above [1] and [2] are as described above.
［１］基油（Ａ）及びチアジアゾール系化合物（Ｂ）を含有し、硫化オレフィンの含有量が０．２０質量％未満であり、１００℃における動粘度が２．１ｍｍ２／ｓ以上５．０ｍｍ２／ｓ未満である、潤滑油組成物を用いた、減速機。
［２］基油（Ａ）及びチアジアゾール系化合物（Ｂ）を含有し、硫化オレフィンの含有量が０．２０質量％未満であり、１００℃における動粘度が２．１ｍｍ２／ｓ以上５．０ｍｍ２／ｓ未満である、潤滑油組成物を減速機の潤滑に適用する、潤滑油組成物の使用。
上記［１］及び［２］に記載の潤滑油組成物の好適な態様は、上述のとおりである。 In addition, considering the above-mentioned characteristics of the lubricating oil composition of one aspect of the present invention, the present invention may also provide the following [1] and [2].
[1] Contains the base oil (A) and the thiadiazole compound (B), the content of olefin sulfide is less than 0.20% by mass, and the kinematic viscosity at 100 ° C. is 2.1 mm 2 / s or more and 5.0 mm. Reducer with lubricating oil composition less than 2 / s.
[2] Contains the base oil (A) and the thiadiazol-based compound (B), the content of olefin sulfide is less than 0.20% by mass, and the kinematic viscosity at 100 ° C. is 2.1 mm 2 / s or more and 5.0 mm. Use of a lubricating oil composition that applies a lubricating oil composition to lubricate a speed reducer, which is less than 2 / s.
The preferred embodiments of the lubricating oil composition according to the above [1] and [2] are as described above.
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 described in more detail by way of examples, but the present invention is not limited to these examples. The methods for measuring various physical properties are as follows.
（１）動粘度、粘度指数
ＪＩＳ Ｋ２２８３：２０００に準拠して測定及び算出した。
（２）硫黄原子の含有量
ＪＩＳ Ｋ２５４１－６：２０１３に準拠して測定した。
（３）窒素原子の含有量
ＪＩＳ Ｋ２６０９に準拠して測定した。
（４）リン原子及びモリブデンの含有量
ＪＰＩ－５Ｓ－３８－９２に準拠して測定した。
（５）塩基価（過塩素酸法）
ＪＩＳ Ｋ２５０１：２００３（過塩素酸法）に準拠して測定した。
（６）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
（７）引火点
ＡＳＴＭ Ｄ９２に準拠し、クリーブランド開放式（ＣＯＣ）法により測定した。
（８）アニリン点
ＡＳＴＭ Ｄ６１１に準拠して測定した。 (1) Kinematic viscosity, viscosity index Measured and calculated according to JIS K2283: 2000.
(2) Sulfur atom content Measured according to JIS K2541-6: 2013.
(3) Nitrogen atom content Measured according to JIS K2609.
(4) Phosphorus atom and molybdenum content Measured according to JPI-5S-38-92.
(5) Base value (perchloric acid method)
The measurement was performed according to JIS K2501: 2003 (perchloric acid method).
(6) Weight average molecular weight (Mw)
It was measured under the following conditions using a gel permeation chromatograph device (manufactured by Agilent, "1260 type HPLC"), and the value measured in terms of standard polystyrene was used.
(Measurement condition)
-Column: Two "Shodex LF404" are connected in sequence.
-Column temperature: 35 ° C
・ Developing solvent: Chloroform ・ Flow rate: 0.3 mL / min
(7) Flash point Measured by the Cleveland open method (COC) method according to ASTM D92.
(8) Aniline point Measured according to ASTM D611.
ＪＩＳ Ｋ２２８３：２０００に準拠して測定及び算出した。
（２）硫黄原子の含有量
ＪＩＳ Ｋ２５４１－６：２０１３に準拠して測定した。
（３）窒素原子の含有量
ＪＩＳ Ｋ２６０９に準拠して測定した。
（４）リン原子及びモリブデンの含有量
ＪＰＩ－５Ｓ－３８－９２に準拠して測定した。
（５）塩基価（過塩素酸法）
ＪＩＳ Ｋ２５０１：２００３（過塩素酸法）に準拠して測定した。
（６）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
（７）引火点
ＡＳＴＭ Ｄ９２に準拠し、クリーブランド開放式（ＣＯＣ）法により測定した。
（８）アニリン点
ＡＳＴＭ Ｄ６１１に準拠して測定した。 (1) Kinematic viscosity, viscosity index Measured and calculated according to JIS K2283: 2000.
(2) Sulfur atom content Measured according to JIS K2541-6: 2013.
(3) Nitrogen atom content Measured according to JIS K2609.
(4) Phosphorus atom and molybdenum content Measured according to JPI-5S-38-92.
(5) Base value (perchloric acid method)
The measurement was performed according to JIS K2501: 2003 (perchloric acid method).
(6) Weight average molecular weight (Mw)
It was measured under the following conditions using a gel permeation chromatograph device (manufactured by Agilent, "1260 type HPLC"), and the value measured in terms of standard polystyrene was used.
(Measurement condition)
-Column: Two "Shodex LF404" are connected in sequence.
-Column temperature: 35 ° C
・ Developing solvent: Chloroform ・ Flow rate: 0.3 mL / min
(7) Flash point Measured by the Cleveland open method (COC) method according to ASTM D92.
(8) Aniline point Measured according to ASTM D611.
実施例１～９、比較例１～４
表１に示す種類の基油及び各種添加剤を、表１及び表２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。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。なお、いずれの潤滑油組成物についても、モリブデン原子の含有量は２質量ｐｐｍ未満であった。 Examples 1-9, Comparative Examples 1-4
The base oils of the types shown in Table 1 and various additives were added and mixed in the blending amounts shown in Tables 1 and 2, respectively, to prepare a lubricating oil composition. Details of each component used in the preparation of the lubricating oil composition are as follows. The content of molybdenum atoms in each of the lubricating oil compositions was less than 2 parts by mass.
表１に示す種類の基油及び各種添加剤を、表１及び表２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。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。なお、いずれの潤滑油組成物についても、モリブデン原子の含有量は２質量ｐｐｍ未満であった。 Examples 1-9, Comparative Examples 1-4
The base oils of the types shown in Table 1 and various additives were added and mixed in the blending amounts shown in Tables 1 and 2, respectively, to prepare a lubricating oil composition. Details of each component used in the preparation of the lubricating oil composition are as follows. The content of molybdenum atoms in each of the lubricating oil compositions was less than 2 parts by mass.
＜基油＞
・「鉱油（１）」：６０Ｎ水素化分解鉱油、１００℃動粘度＝２．２ｍｍ２／ｓ、粘度指数＝１０８。
・「鉱油（２）」：１００Ｎ水素化分解鉱油、１００℃動粘度＝４．２ｍｍ２／ｓ、粘度指数＝１２２。
・「鉱油（３）」：１５０Ｎ水素化分解鉱油、１００℃動粘度＝６．０ｍｍ２／ｓ、粘度指数＝１３２。
・「ＰＡＯ（１）」：ポリα－オレフィン、１００℃動粘度＝１．８ｍｍ２／ｓ。
・「ＰＡＯ（２）」：ポリα－オレフィン、１００℃動粘度＝２．０ｍｍ２／ｓ。
・「ＰＡＯ（３）」：ポリα－オレフィン、１００℃動粘度＝３．９ｍｍ２／ｓ、粘度指数＝１２０。 <Base oil>
"Mineral oil (1)": 60N hydrocracked mineral oil, 100 ° C. kinematic viscosity = 2.2 mm 2 / s, viscosity index = 108.
"Mineral oil (2)": 100N hydrocracked mineral oil, 100 ° C. kinematic viscosity = 4.2 mm 2 / s, viscosity index = 122.
"Mineral oil (3)": 150N hydrocracked mineral oil, 100 ° C. kinematic viscosity = 6.0 mm 2 / s, viscosity index = 132.
"PAO (1)": poly α-olefin, 100 ° C. kinematic viscosity = 1.8 mm 2 / s.
"PAO (2)": poly α-olefin, 100 ° C. kinematic viscosity = 2.0 mm 2 / s.
"PAO (3)": poly α-olefin, 100 ° C. kinematic viscosity = 3.9 mm 2 / s, viscosity index = 120.
・「鉱油（１）」：６０Ｎ水素化分解鉱油、１００℃動粘度＝２．２ｍｍ２／ｓ、粘度指数＝１０８。
・「鉱油（２）」：１００Ｎ水素化分解鉱油、１００℃動粘度＝４．２ｍｍ２／ｓ、粘度指数＝１２２。
・「鉱油（３）」：１５０Ｎ水素化分解鉱油、１００℃動粘度＝６．０ｍｍ２／ｓ、粘度指数＝１３２。
・「ＰＡＯ（１）」：ポリα－オレフィン、１００℃動粘度＝１．８ｍｍ２／ｓ。
・「ＰＡＯ（２）」：ポリα－オレフィン、１００℃動粘度＝２．０ｍｍ２／ｓ。
・「ＰＡＯ（３）」：ポリα－オレフィン、１００℃動粘度＝３．９ｍｍ２／ｓ、粘度指数＝１２０。 <Base oil>
"Mineral oil (1)": 60N hydrocracked mineral oil, 100 ° C. kinematic viscosity = 2.2 mm 2 / s, viscosity index = 108.
"Mineral oil (2)": 100N hydrocracked mineral oil, 100 ° C. kinematic viscosity = 4.2 mm 2 / s, viscosity index = 122.
"Mineral oil (3)": 150N hydrocracked mineral oil, 100 ° C. kinematic viscosity = 6.0 mm 2 / s, viscosity index = 132.
"PAO (1)": poly α-olefin, 100 ° C. kinematic viscosity = 1.8 mm 2 / s.
"PAO (2)": poly α-olefin, 100 ° C. kinematic viscosity = 2.0 mm 2 / s.
"PAO (3)": poly α-olefin, 100 ° C. kinematic viscosity = 3.9 mm 2 / s, viscosity index = 120.
＜硫黄系化合物＞
・「チアジアゾール（分岐鎖）」：２，５－ビス（１，１－ジメチルヘプチルジチオ）－１，３，４－チアジアゾール、前記一般式（ｂ－１）中、ｍ＝ｎ＝２、Ｒ１及びＲ２が１，１－ジメチルヘプチル基であるチアジアゾール。硫黄原子含有量＝３３．３質量％、窒素原子含有量＝６．４質量％。
・「チアジアゾール（直鎖）」：２，５－ビス（ｎ－オクチルジチオ）－１，３，４－チアジアゾール、前記一般式（ｂ－１）中のｍ＝ｎ＝２、Ｒ１及びＲ２がｎ－オクチル基であるチアジアゾール。硫黄原子含有量＝３４質量％、窒素原子含有量＝４．２質量％。
・「硫化オレフィン」：前記一般式（ｉ）で表される硫化オレフィン。硫黄原子含有量＝４３質量％。 <Sulfur compound>
"Thiadiazole (branched chain)": 2,5-bis (1,1-dimethylheptyldithio) -1,3,4-thiadiazole, in the above general formula (b-1), m = n = 2, R 1 And thiadiazole in which R2 is a 1,1-dimethylheptyl group. Sulfur atom content = 33.3% by mass, nitrogen atom content = 6.4% by mass.
"Thiadiazole (straight chain)": 2,5-bis (n-octyldithio) -1,3,4-thiadiazole, m = n = 2, R 1 and R 2 in the general formula (b-1). Is thiadiazole, which is an n-octyl group. Sulfur atom content = 34% by mass, nitrogen atom content = 4.2% by mass.
"Sulfide olefin": Sulfide olefin represented by the general formula (i). Sulfur atom content = 43% by mass.
・「チアジアゾール（分岐鎖）」：２，５－ビス（１，１－ジメチルヘプチルジチオ）－１，３，４－チアジアゾール、前記一般式（ｂ－１）中、ｍ＝ｎ＝２、Ｒ１及びＲ２が１，１－ジメチルヘプチル基であるチアジアゾール。硫黄原子含有量＝３３．３質量％、窒素原子含有量＝６．４質量％。
・「チアジアゾール（直鎖）」：２，５－ビス（ｎ－オクチルジチオ）－１，３，４－チアジアゾール、前記一般式（ｂ－１）中のｍ＝ｎ＝２、Ｒ１及びＲ２がｎ－オクチル基であるチアジアゾール。硫黄原子含有量＝３４質量％、窒素原子含有量＝４．２質量％。
・「硫化オレフィン」：前記一般式（ｉ）で表される硫化オレフィン。硫黄原子含有量＝４３質量％。 <Sulfur compound>
"Thiadiazole (branched chain)": 2,5-bis (1,1-dimethylheptyldithio) -1,3,4-thiadiazole, in the above general formula (b-1), m = n = 2, R 1 And thiadiazole in which R2 is a 1,1-dimethylheptyl group. Sulfur atom content = 33.3% by mass, nitrogen atom content = 6.4% by mass.
"Thiadiazole (straight chain)": 2,5-bis (n-octyldithio) -1,3,4-thiadiazole, m = n = 2, R 1 and R 2 in the general formula (b-1). Is thiadiazole, which is an n-octyl group. Sulfur atom content = 34% by mass, nitrogen atom content = 4.2% by mass.
"Sulfide olefin": Sulfide olefin represented by the general formula (i). Sulfur atom content = 43% by mass.
＜硫黄リン系化合物＞
・「硫黄リン系化合物（１）」：前記一般式（ｃ－１１）中のａ１＝２、ＲＡ１１＝ｎ－オクチル基である硫黄原子含有亜リン酸エステル。
・「硫黄リン系化合物（２）」：前記一般式（ｃ－１２）中のａ２＝ａ３＝２、ＲＡ２１、ＲＡ２２＝ｎ－オクチル基である硫黄原子含有亜リン酸エステル。 <Phosphorus sulfide compound>
"Sulfur phosphorus-based compound (1)": A sulfur atom-containing phosphite ester having a1 = 2, RA11 = n-octyl group in the general formula (c-11).
"Sulfur phosphorus-based compound (2)": A sulfur atom-containing phosphite ester having a2 = a3 = 2, RA21 , RA22 = n-octyl group in the general formula (c-12).
・「硫黄リン系化合物（１）」：前記一般式（ｃ－１１）中のａ１＝２、ＲＡ１１＝ｎ－オクチル基である硫黄原子含有亜リン酸エステル。
・「硫黄リン系化合物（２）」：前記一般式（ｃ－１２）中のａ２＝ａ３＝２、ＲＡ２１、ＲＡ２２＝ｎ－オクチル基である硫黄原子含有亜リン酸エステル。 <Phosphorus sulfide compound>
"Sulfur phosphorus-based compound (1)": A sulfur atom-containing phosphite ester having a1 = 2, RA11 = n-octyl group in the general formula (c-11).
"Sulfur phosphorus-based compound (2)": A sulfur atom-containing phosphite ester having a2 = a3 = 2, RA21 , RA22 = n-octyl group in the general formula (c-12).
＜他の添加剤＞
・「流動点降下剤」：ポリメタクリレート系流動点降下剤。
・「添加剤混合物」：以下の添加剤を混合し、７０Ｎ水素化分解鉱油で希釈した添加剤混合物。
・フェノール系酸化防止剤（ヒンダードフェノール）
・アミン系酸化防止剤（炭素数９のアルキル化ジフェニルアミン）
・カルシウムスルホネート（塩基価（過塩素酸法）＝３００ｍｇＫＯＨ／ｇ）
・Ｍｗ＝９６０のポリブテニル基を有するコハク酸ビスイミド
・ベンゾトリアゾール
・グリセリン脂肪酸エステル
・シリコーン系消泡剤 <Other additives>
-"Pour point depressant": Polymethacrylate-based pour point depressant.
-"Additive mixture": An additive mixture obtained by mixing the following additives and diluting with 70N hydrocracked mineral oil.
・ Phenolic antioxidant (hindered phenol)
-Amine-based antioxidant (alkylated diphenylamine with 9 carbon atoms)
-Calcium sulfonate (base value (perchloric acid method) = 300 mgKOH / g)
・ Bisimide succinate having a polybutenyl group of Mw = 960 ・ Benzotriazole ・ Glycerin fatty acid ester ・ Silicone defoaming agent
・「流動点降下剤」：ポリメタクリレート系流動点降下剤。
・「添加剤混合物」：以下の添加剤を混合し、７０Ｎ水素化分解鉱油で希釈した添加剤混合物。
・フェノール系酸化防止剤（ヒンダードフェノール）
・アミン系酸化防止剤（炭素数９のアルキル化ジフェニルアミン）
・カルシウムスルホネート（塩基価（過塩素酸法）＝３００ｍｇＫＯＨ／ｇ）
・Ｍｗ＝９６０のポリブテニル基を有するコハク酸ビスイミド
・ベンゾトリアゾール
・グリセリン脂肪酸エステル
・シリコーン系消泡剤 <Other additives>
-"Pour point depressant": Polymethacrylate-based pour point depressant.
-"Additive mixture": An additive mixture obtained by mixing the following additives and diluting with 70N hydrocracked mineral oil.
・ Phenolic antioxidant (hindered phenol)
-Amine-based antioxidant (alkylated diphenylamine with 9 carbon atoms)
-Calcium sulfonate (base value (perchloric acid method) = 300 mgKOH / g)
・ Bisimide succinate having a polybutenyl group of Mw = 960 ・ Benzotriazole ・ Glycerin fatty acid ester ・ Silicone defoaming agent
調製した潤滑油組成物について、動粘度、粘度指数、引火点、及びアニリン点を測定もしくは算出すると共に、以下の試験を行った。これらの結果を表１及び表２に示す。
The prepared lubricating oil composition was measured or calculated for kinematic viscosity, viscosity index, flash point, and aniline point, and the following tests were performed. These results are shown in Tables 1 and 2.
（１）冷却性試験
ＪＩＳ Ｋ２２４２の「６．２ 冷却性能試験方法（Ａ法：表面温度測定法）」に準拠し、２００℃に加熱した銀棒を、８０℃に加熱した２５０ｍＬの試料油に入れ、１２秒後の銀棒の表面温度を測定した。銀棒の表面温度が低いほど、冷却性に優れた潤滑油組成物であるといえる。 (1) Coolability test In accordance with JIS K2242 "6.2 Cooling performance test method (Method A: surface temperature measurement method)", a silver rod heated to 200 ° C. was used as 250 mL of sample oil heated to 80 ° C. After putting it in, the surface temperature of the silver rod was measured 12 seconds later. It can be said that the lower the surface temperature of the silver rod, the better the cooling property of the lubricating oil composition.
ＪＩＳ Ｋ２２４２の「６．２ 冷却性能試験方法（Ａ法：表面温度測定法）」に準拠し、２００℃に加熱した銀棒を、８０℃に加熱した２５０ｍＬの試料油に入れ、１２秒後の銀棒の表面温度を測定した。銀棒の表面温度が低いほど、冷却性に優れた潤滑油組成物であるといえる。 (1) Coolability test In accordance with JIS K2242 "6.2 Cooling performance test method (Method A: surface temperature measurement method)", a silver rod heated to 200 ° C. was used as 250 mL of sample oil heated to 80 ° C. After putting it in, the surface temperature of the silver rod was measured 12 seconds later. It can be said that the lower the surface temperature of the silver rod, the better the cooling property of the lubricating oil composition.
（２）ＦＺＧスカッフィング試験（Ａ１０／１６．６Ｒ／９０）
ＡＳＴＭ Ｄ５１８２に準拠し、Ａ１０タイプ歯車を用いて、試料油温度９０℃、回転数２９００ｒｐｍ、運転時間約７．５分間の条件下で、規定に沿って段階的に荷重を上げ、スカッフィングが発生した際の荷重のステージを求めた。当該ステージの値が高いほど、ギヤ耐スカッフィング性に優れた潤滑油組成物であるといえる。 (2) FZG scuffing test (A10 / 16.6R / 90)
In accordance with ASTM D5182, using A10 type gears, under the conditions of sample oil temperature 90 ° C., rotation speed 2900 rpm, and operating time of about 7.5 minutes, the load was gradually increased according to the regulations, and scuffing occurred. The stage of the load was calculated. It can be said that the higher the value of the stage, the more excellent the lubricating oil composition is in gear scuffing resistance.
ＡＳＴＭ Ｄ５１８２に準拠し、Ａ１０タイプ歯車を用いて、試料油温度９０℃、回転数２９００ｒｐｍ、運転時間約７．５分間の条件下で、規定に沿って段階的に荷重を上げ、スカッフィングが発生した際の荷重のステージを求めた。当該ステージの値が高いほど、ギヤ耐スカッフィング性に優れた潤滑油組成物であるといえる。 (2) FZG scuffing test (A10 / 16.6R / 90)
In accordance with ASTM D5182, using A10 type gears, under the conditions of sample oil temperature 90 ° C., rotation speed 2900 rpm, and operating time of about 7.5 minutes, the load was gradually increased according to the regulations, and scuffing occurred. The stage of the load was calculated. It can be said that the higher the value of the stage, the more excellent the lubricating oil composition is in gear scuffing resistance.
（３）絶縁性試験
ＪＩＳ Ｃ２１０１に準拠して、測定温度８０℃、印加電圧２５０Ｖ、測定時間１分間の試験条件において、試料油の体積抵抗率を測定した。当該体積抵抗率の値が高いほど、絶縁性に優れた潤滑油組成物であるといえる。 (3) Insulation test According to JIS C2101, the volume resistivity of the 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. It can be said that the higher the value of the volume resistivity, the better the insulating property of the lubricating oil composition.
ＪＩＳ Ｃ２１０１に準拠して、測定温度８０℃、印加電圧２５０Ｖ、測定時間１分間の試験条件において、試料油の体積抵抗率を測定した。当該体積抵抗率の値が高いほど、絶縁性に優れた潤滑油組成物であるといえる。 (3) Insulation test According to JIS C2101, the volume resistivity of the 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. It can be said that the higher the value of the volume resistivity, the better the insulating property of the lubricating oil composition.
（４）銅溶出試験
ＪＩＳ Ｋ２５１４に準拠するＩＳＯＴ試験を、銅片及び鉄片を触媒として用いて、温度１５０℃、７２時間行い、試料油を劣化させた。劣化後の試料油に対して、ＪＰＩ－５Ｓ－３８－９２に準拠した方法にて、銅溶出量（単位：質量ｐｐｍ）を測定した。当該銅溶出量の値が少ないほど、銅溶出抑制効果の高い潤滑油組成物であるといえる。 (4) Copper elution test An ISOT test based on JIS K2514 was carried out at a temperature of 150 ° C. for 72 hours using a copper piece and an iron piece as a catalyst to deteriorate the sample oil. The copper elution amount (unit: mass ppm) was measured for the deteriorated sample oil by a method according to JPI-5S-38-92. It can be said that the smaller the value of the copper elution amount is, the higher the effect of suppressing copper elution is in the lubricating oil composition.
ＪＩＳ Ｋ２５１４に準拠するＩＳＯＴ試験を、銅片及び鉄片を触媒として用いて、温度１５０℃、７２時間行い、試料油を劣化させた。劣化後の試料油に対して、ＪＰＩ－５Ｓ－３８－９２に準拠した方法にて、銅溶出量（単位：質量ｐｐｍ）を測定した。当該銅溶出量の値が少ないほど、銅溶出抑制効果の高い潤滑油組成物であるといえる。 (4) Copper elution test An ISOT test based on JIS K2514 was carried out at a temperature of 150 ° C. for 72 hours using a copper piece and an iron piece as a catalyst to deteriorate the sample oil. The copper elution amount (unit: mass ppm) was measured for the deteriorated sample oil by a method according to JPI-5S-38-92. It can be said that the smaller the value of the copper elution amount is, the higher the effect of suppressing copper elution is in the lubricating oil composition.
表１及び表２より、実施例１～９の潤滑油組成物は、低粘度であるにもかかわらず、冷却性、耐スカッフィング性、及び絶縁性がバランス良く優れた結果となった。一方で、比較例１～２の潤滑油組成物は、耐スカッフィング性が劣り、さらに、比較例３の潤滑油組成物は、耐スカッフィング性と共に絶縁性も劣る結果となった。また、比較例４の潤滑油組成物は、耐スカッフィング性は良好であるものの、冷却性が劣る結果となった。
From Tables 1 and 2, the lubricating oil compositions of Examples 1 to 9 had excellent cooling properties, scuffing resistance, and insulating properties in a well-balanced manner, despite their low viscosities. On the other hand, the lubricating oil compositions of Comparative Examples 1 and 2 were inferior in scuffing resistance, and the lubricating oil composition of Comparative Example 3 was inferior in insulating property as well as scuffing resistance. Further, the lubricating oil composition of Comparative Example 4 had good scuffing resistance, but was inferior in cooling property.
Claims (14)
- 基油（Ａ）及びチアジアゾール系化合物（Ｂ）を含有する潤滑油組成物であって、
硫化オレフィンの含有量が、前記潤滑油組成物の全量基準で、０．２０質量％未満であり、
前記潤滑油組成物の１００℃における動粘度が２．１ｍｍ２／ｓ以上５．０ｍｍ２／ｓ未満である、潤滑油組成物。 A lubricating oil composition containing a base oil (A) and a thiadiazole-based compound (B).
The content of the olefin sulfide is less than 0.20% by mass based on the total amount of the lubricating oil composition.
A lubricating oil composition having a kinematic viscosity of the lubricating oil composition at 100 ° C. of 2.1 mm 2 / s or more and less than 5.0 mm 2 / s. - 成分（Ｂ）が、分岐鎖アルキル基を有するチアジアゾール系化合物（Ｂ１）を含む、請求項１に記載の潤滑油組成物。 The lubricating oil composition according to claim 1, wherein the component (B) contains a thiadiazole-based compound (B1) having a branched-chain alkyl group.
- 成分（Ｂ１）が有する前記分岐鎖アルキル基の炭素数が５以上である、請求項２に記載の潤滑油組成物。 The lubricating oil composition according to claim 2, wherein the branched-chain alkyl group contained in the component (B1) has 5 or more carbon atoms.
- 成分（Ｂ）が、下記一般式（ｂ－１）～（ｂ－４）のいずれかで表される化合物を含む、請求項１～３のいずれか一項に記載の潤滑油組成物。
- Ｒ１及びＲ２が、それぞれ独立して、炭素数５以上の分岐鎖アルキル基である、請求項４に記載の潤滑油組成物。 The lubricating oil composition according to claim 4, wherein R 1 and R 2 are independently branched-chain alkyl groups having 5 or more carbon atoms.
- 下記一般式（ｂ－ｘ）で表される化合物の含有割合が、前記潤滑油組成物に含まれる成分（Ｂ）の全量基準で、１０質量％未満である、請求項１～５のいずれか一項に記載の潤滑油組成物。
- 成分（Ｂ）の含有量が、前記潤滑油組成物の全量基準で、０．０１～３．０質量％である、請求項１～６のいずれか一項の記載の潤滑油組成物。 The lubricating oil composition according to any one of claims 1 to 6, wherein the content of the component (B) is 0.01 to 3.0% 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、０．１０～１．０質量％である、請求項１～６のいずれか一項の記載の潤滑油組成物。 The lubricating oil composition according to any one of claims 1 to 6, wherein the content of the component (B) is 0.10 to 1.0% by mass based on the total amount of the lubricating oil composition.
- 成分（Ａ）が、ＡＰＩ基油カテゴリーのグループ２及びグループ３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、請求項１～８のいずれか一項の記載の潤滑油組成物。 The lubricating oil according to any one of claims 1 to 8, wherein the component (A) is one or more selected from mineral oils classified into groups 2 and 3 of the API base oil category, and synthetic oils. Composition.
- さらにリン酸エステル及び亜リン酸エステルから選ばれる１種以上のリン系化合物（Ｃ）を含有する、請求項１～９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 9, further containing one or more phosphorus-based compounds (C) selected from phosphoric acid esters and phosphite esters.
- 成分（Ｃ）が、硫黄原子含有リン酸エステル及び硫黄原子含有亜リン酸エステルから選ばれる１種以上の硫黄リン系化合物（Ｃ１）を含む、請求項１０に記載の潤滑油組成物。 The lubricating oil composition according to claim 10, wherein the component (C) contains one or more sulfur phosphorus-based compounds (C1) selected from a sulfur atom-containing phosphoric acid ester and a sulfur atom-containing subphosphate ester.
- 減速機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 a speed reducer.
- 請求項１～１２のいずれか一項に記載の潤滑油組成物を減速機の潤滑に適用する、潤滑油組成物の使用。 Use of a lubricating oil composition that applies the lubricating oil composition according to any one of claims 1 to 12 to lubricate a speed reducer.
- 請求項１～１２のいずれか一項に記載の潤滑油組成物を製造する方法であって、
基油（Ａ）に、チアジアゾール系化合物（Ｂ）を配合すると共に、
硫化オレフィンの含有量が、前記潤滑油組成物の全量基準で、０．２０質量％未満であり、
前記潤滑油組成物の１００℃における動粘度が２．１以上５．０ｍｍ２／ｓ未満となるように調製する、潤滑油組成物の製造方法。 The method for producing a lubricating oil composition according to any one of claims 1 to 12.
The thiadiazole compound (B) is blended with the base oil (A), and at the same time,
The content of the olefin sulfide is less than 0.20% by mass based on the total amount of the lubricating oil composition.
A method for producing a lubricating oil composition, which is prepared so that the kinematic viscosity of the lubricating oil composition at 100 ° C. is 2.1 or more and less than 5.0 mm 2 / s.
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| JP2003183682A (en) * | 2001-12-14 | 2003-07-03 | Toyota Motor Corp | Fluid for traction drive |
| JP2012193255A (en) | 2011-03-16 | 2012-10-11 | Jx Nippon Oil & Energy Corp | Gear oil composition |
| WO2015194236A1 (en) * | 2014-06-16 | 2015-12-23 | Ｊｘ日鉱日石エネルギー株式会社 | Lubricating oil composition for transmission |
| WO2016157955A1 (en) * | 2015-03-31 | 2016-10-06 | Ｊｘエネルギー株式会社 | Lubricant oil composition |
| JP2020041055A (en) * | 2018-09-11 | 2020-03-19 | Ｅｍｇルブリカンツ合同会社 | Lubricant composition |
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| JP2003183682A (en) * | 2001-12-14 | 2003-07-03 | Toyota Motor Corp | Fluid for traction drive |
| JP2012193255A (en) | 2011-03-16 | 2012-10-11 | Jx Nippon Oil & Energy Corp | Gear oil composition |
| WO2015194236A1 (en) * | 2014-06-16 | 2015-12-23 | Ｊｘ日鉱日石エネルギー株式会社 | Lubricating oil composition for transmission |
| WO2016157955A1 (en) * | 2015-03-31 | 2016-10-06 | Ｊｘエネルギー株式会社 | Lubricant oil composition |
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| WO2020218366A1 (en) * | 2019-04-26 | 2020-10-29 | 出光興産株式会社 | Lubricating oil composition for drive system equipment, method for producing same, method for lubricating drive system equipment, and drive system equipment |
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| JPWO2022138523A1 (en) | 2022-06-30 |
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