CN108699484B - Lubricating oil composition - Google Patents
Lubricating oil composition Download PDFInfo
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- CN108699484B CN108699484B CN201780014896.0A CN201780014896A CN108699484B CN 108699484 B CN108699484 B CN 108699484B CN 201780014896 A CN201780014896 A CN 201780014896A CN 108699484 B CN108699484 B CN 108699484B
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- CN
- China
- Prior art keywords
- lubricating oil
- oil composition
- group
- composition according
- alkaline earth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 137
- 239000000203 mixture Substances 0.000 title claims abstract description 127
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 97
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 74
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 72
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 66
- 239000003599 detergent Substances 0.000 claims abstract description 46
- 150000001336 alkenes Chemical class 0.000 claims abstract description 33
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000002199 base oil Substances 0.000 claims abstract description 30
- 150000001412 amines Chemical class 0.000 claims abstract description 28
- 239000002530 phenolic antioxidant Substances 0.000 claims abstract description 14
- -1 3, 5-di-t-butyl-4-hydroxyphenyl Chemical group 0.000 claims description 68
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 27
- 239000003921 oil Substances 0.000 claims description 25
- 125000000217 alkyl group Chemical group 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 20
- 125000004432 carbon atom Chemical group C* 0.000 claims description 18
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical group [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 230000007935 neutral effect Effects 0.000 claims description 13
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000011575 calcium Substances 0.000 claims description 10
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 0.000 claims description 10
- 229910052791 calcium Inorganic materials 0.000 claims description 9
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical group [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 8
- 229910052749 magnesium Inorganic materials 0.000 claims description 8
- 239000002480 mineral oil Substances 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 7
- 125000004122 cyclic group Chemical group 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 235000010446 mineral oil Nutrition 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 6
- 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 claims description 5
- IKEHOXWJQXIQAG-UHFFFAOYSA-N 2-tert-butyl-4-methylphenol Chemical compound CC1=CC=C(O)C(C(C)(C)C)=C1 IKEHOXWJQXIQAG-UHFFFAOYSA-N 0.000 claims description 5
- XOUQAVYLRNOXDO-UHFFFAOYSA-N 2-tert-butyl-5-methylphenol Chemical compound CC1=CC=C(C(C)(C)C)C(O)=C1 XOUQAVYLRNOXDO-UHFFFAOYSA-N 0.000 claims description 5
- BKZXZGWHTRCFPX-UHFFFAOYSA-N 2-tert-butyl-6-methylphenol Chemical compound CC1=CC=CC(C(C)(C)C)=C1O BKZXZGWHTRCFPX-UHFFFAOYSA-N 0.000 claims description 5
- 125000003342 alkenyl group Chemical group 0.000 claims description 5
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 5
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 claims description 4
- PFEFOYRSMXVNEL-UHFFFAOYSA-N 2,4,6-tritert-butylphenol Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 PFEFOYRSMXVNEL-UHFFFAOYSA-N 0.000 claims description 4
- OPLCSTZDXXUYDU-UHFFFAOYSA-N 2,4-dimethyl-6-tert-butylphenol Chemical compound CC1=CC(C)=C(O)C(C(C)(C)C)=C1 OPLCSTZDXXUYDU-UHFFFAOYSA-N 0.000 claims description 4
- HNURKXXMYARGAY-UHFFFAOYSA-N 2,6-Di-tert-butyl-4-hydroxymethylphenol Chemical compound CC(C)(C)C1=CC(CO)=CC(C(C)(C)C)=C1O HNURKXXMYARGAY-UHFFFAOYSA-N 0.000 claims description 4
- SOASHAVJCWKTKL-UHFFFAOYSA-N 4-methyl-2,6-bis(2-methylbutan-2-yl)phenol Chemical compound CCC(C)(C)C1=CC(C)=CC(C(C)(C)CC)=C1O SOASHAVJCWKTKL-UHFFFAOYSA-N 0.000 claims description 4
- MEIQSUIILRYXCS-UHFFFAOYSA-N C(CCC)C1=CC=C(C=C1)N(CCCCCCCC)C1=CC=CC=C1 Chemical class C(CCC)C1=CC=C(C=C1)N(CCCCCCCC)C1=CC=CC=C1 MEIQSUIILRYXCS-UHFFFAOYSA-N 0.000 claims description 4
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 claims description 4
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 4
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 4
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical group [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
- 230000001050 lubricating effect Effects 0.000 claims description 4
- ZLUHLPGJUZHFAR-UHFFFAOYSA-N n-[4-(2,4,4-trimethylpentan-2-yl)phenyl]naphthalen-1-amine Chemical class C1=CC(C(C)(C)CC(C)(C)C)=CC=C1NC1=CC=CC2=CC=CC=C12 ZLUHLPGJUZHFAR-UHFFFAOYSA-N 0.000 claims description 4
- 125000001624 naphthyl group Chemical group 0.000 claims description 4
- 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 claims description 4
- 229960001860 salicylate Drugs 0.000 claims description 4
- 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 claims description 4
- 239000001993 wax Substances 0.000 claims description 4
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 3
- YGSDEFSMJLZEOE-UHFFFAOYSA-N Salicylic acid Natural products OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 claims description 3
- 239000002518 antifoaming agent Substances 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 3
- 229910052790 beryllium Inorganic materials 0.000 claims description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical group [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 3
- 125000006165 cyclic alkyl group Chemical group 0.000 claims description 3
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 239000003607 modifier Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- AFFLGGQVNFXPEV-UHFFFAOYSA-N n-decene Natural products CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 claims description 3
- 229920001083 polybutene Polymers 0.000 claims description 3
- 229910052712 strontium Inorganic materials 0.000 claims description 3
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical group [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims description 3
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 3
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 claims description 2
- BVUXDWXKPROUDO-UHFFFAOYSA-N 2,6-di-tert-butyl-4-ethylphenol Chemical compound CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 BVUXDWXKPROUDO-UHFFFAOYSA-N 0.000 claims description 2
- UDFARPRXWMDFQU-UHFFFAOYSA-N 2,6-ditert-butyl-4-[(3,5-ditert-butyl-4-hydroxyphenyl)methylsulfanylmethyl]phenol Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CSCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 UDFARPRXWMDFQU-UHFFFAOYSA-N 0.000 claims description 2
- GTLMTHAWEBRMGI-UHFFFAOYSA-N 2-cyclohexyl-4-methylphenol Chemical compound CC1=CC=C(O)C(C2CCCCC2)=C1 GTLMTHAWEBRMGI-UHFFFAOYSA-N 0.000 claims description 2
- YFHKLSPMRRWLKI-UHFFFAOYSA-N 2-tert-butyl-4-(3-tert-butyl-4-hydroxy-5-methylphenyl)sulfanyl-6-methylphenol Chemical compound CC(C)(C)C1=C(O)C(C)=CC(SC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 YFHKLSPMRRWLKI-UHFFFAOYSA-N 0.000 claims description 2
- LZHCVNIARUXHAL-UHFFFAOYSA-N 2-tert-butyl-4-ethylphenol Chemical compound CCC1=CC=C(O)C(C(C)(C)C)=C1 LZHCVNIARUXHAL-UHFFFAOYSA-N 0.000 claims description 2
- AZZWZMUXHALBCQ-UHFFFAOYSA-N 4-[(4-hydroxy-3,5-dimethylphenyl)methyl]-2,6-dimethylphenol Chemical compound CC1=C(O)C(C)=CC(CC=2C=C(C)C(O)=C(C)C=2)=C1 AZZWZMUXHALBCQ-UHFFFAOYSA-N 0.000 claims description 2
- OILMLWAZYNVPMG-UHFFFAOYSA-N 4-methyl-2-nonylphenol Chemical compound CCCCCCCCCC1=CC(C)=CC=C1O OILMLWAZYNVPMG-UHFFFAOYSA-N 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 2
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 claims description 2
- 229920002367 Polyisobutene Polymers 0.000 claims description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 2
- 125000001204 arachidyl 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])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- 125000002511 behenyl 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])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 claims description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 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 claims 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 claims description 2
- 125000005066 dodecenyl group Chemical group C(=CCCCCCCCCCC)* 0.000 claims 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 claims description 2
- 150000002170 ethers Chemical class 0.000 claims description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 2
- 125000000755 henicosyl 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])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 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 claims description 2
- 125000006038 hexenyl group Chemical group 0.000 claims 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 claims description 2
- 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 claims description 2
- 239000000178 monomer Substances 0.000 claims 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 claims description 2
- 125000001196 nonadecyl 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])C([H])([H])[H] 0.000 claims description 2
- 125000005187 nonenyl group Chemical group C(=CCCCCCCC)* 0.000 claims 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 claims description 2
- 125000005064 octadecenyl group Chemical group C(=CCCCCCCCCCCCCCCCC)* 0.000 claims description 2
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 claims 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 claims description 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 2
- 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 claims description 2
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 claims description 2
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 claims description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N phthalic acid di-n-butyl ester Natural products CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 2
- 229920001515 polyalkylene glycol Polymers 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 claims description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims description 2
- 229960004889 salicylic acid Drugs 0.000 claims 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 claims description 2
- 125000005063 tetradecenyl group Chemical group C(=CCCCCCCCCCCCC)* 0.000 claims description 2
- 125000002469 tricosyl 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])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
- 125000005040 tridecenyl group Chemical group C(=CCCCCCCCCCCC)* 0.000 claims description 2
- 125000005065 undecenyl group Chemical group C(=CCCCCCCCCC)* 0.000 claims 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 claims description 2
- 229930195735 unsaturated hydrocarbon Natural products 0.000 claims description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 2
- 229940035422 diphenylamine Drugs 0.000 claims 5
- GSOYMOAPJZYXTB-UHFFFAOYSA-N 2,6-ditert-butyl-4-(3,5-ditert-butyl-4-hydroxyphenyl)phenol Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(C=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 GSOYMOAPJZYXTB-UHFFFAOYSA-N 0.000 claims 1
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Classifications
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- 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
- C10M167/00—Lubricating compositions characterised by the additive being a mixture of a macromolecular compound, a non-macromolecular compound and a compound of unknown or incompletely defined constitution, 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
- 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
-
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- 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
-
- 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
- C10M2205/022—Ethene
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- 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
- C10M2205/026—Butene
-
- 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
-
- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/028—Overbased salts thereof
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- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/26—Overbased carboxylic acid salts
- C10M2207/262—Overbased carboxylic acid salts derived from hydroxy substituted aromatic acids, e.g. salicylates
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- 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant Compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
- C10M2215/065—Phenyl-Naphthyl amines
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- 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
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/046—Overbased sulfonic acid salts
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- 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
- C10M2223/045—Metal containing thio derivatives
-
- 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
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
-
- 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
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- 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
- C10N2030/04—Detergent property or dispersant property
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- 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
- C10N2030/40—Low content or no content compositions
- C10N2030/42—Phosphor free or low phosphor content compositions
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- 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
- C10N2030/40—Low content or no content compositions
- C10N2030/43—Sulfur free or low sulfur content compositions
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- 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
- C10N2030/52—Base number [TBN]
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- 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
- C10N2030/68—Shear stability
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- 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
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- 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
- C10N2040/044—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives for manual transmissions
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- General Details Of Gearings (AREA)
Abstract
本发明的润滑油组合物在包含基础油的同时，包含：质均分子量为500以上且5000以下的烯烃低聚物(A)、包含酚系抗氧化剂(B‑1)与胺系抗氧化剂(B‑2)的抗氧化剂(B)、和碱土金属系清净剂(C)，碱土金属系清净剂(C)的以碱土金属原子换算计的含量以润滑油组合物的总量为基准计为1700质量ppm以上且2700质量ppm以下，100℃下的运动粘度为4.0mm2/s以上且6.0mm2/s以下。The lubricating oil composition of the present invention includes a base oil, an olefin oligomer (A) having a mass average molecular weight of 500 or more and 5000 or less, a phenolic antioxidant (B-1) and an amine antioxidant ( B-2) Antioxidant (B) and alkaline earth metal detergent (C), the content of alkaline earth metal detergent (C) in terms of alkaline earth metal atoms is calculated on the basis of the total amount of the lubricating oil composition. 1700 mass ppm or more and 2700 mass ppm or less, and the kinematic viscosity at 100° C. is 4.0 mm 2 /s or more and 6.0 mm 2 /s or less.
Description
Technical Field
The present invention relates to lubricating oil compositions.
Background
The present invention relates to a lubricating oil composition, and relates to a lubricating oil composition suitable for use in, for example, a transmission.
In recent years, in view of reducing carbon dioxide emission and reducing fossil fuel consumption, there has been a strong demand for fuel saving in automobiles. For example, in lubricating oil for automobile gear devices, viscosity reduction is also being advanced for the purpose of reducing stirring resistance. However, the oil film strength in the high temperature region may be lowered due to the lowered viscosity of the lubricating oil, and the seizure resistance, wear resistance, fatigue resistance, and the like may be lowered. In contrast, it is effective to maintain the viscosity of the lubricating oil high in the high temperature region and to reduce the viscosity of the lubricating oil in the normal temperature region. That is, high viscosity indexing is effective.
However, in order to index to high viscosity, a viscosity index improver such as a polymer needs to be added to the lubricating oil. These polymers are subjected to shear in use, thereby causing the viscosity of the lubricating oil to decrease. Therefore, when the viscosity index improver is blended in the lubricating oil, it is necessary to take into account the decrease in viscosity when the actual vehicle is running.
In addition, reduction in size and weight is promoted in transmission design. Since the reduction in size and weight of the transmission increases the mechanical load on the lubrication portions, the lubrication performance of the filled lubricating oil is required to be further improved. Further, since the thermal load is also increased, further improvement in the heat resistance and oxidation stability of the lubricating oil is also required.
If the heat resistance and oxidation stability of the lubricating oil deteriorate, sludge is generated, and this sludge adheres to the lubricated parts, causing poor lubrication. For example, the operation failure of the bearing or the like due to the adhesion of sludge may be mentioned. In particular, in a manual transmission, sludge adhesion in a synchromesh mechanism that performs a gear shift stage switching function causes a reduction in shift feel due to a reduction in friction characteristics, and further causes an operational failure due to a fixed synchronizer ring.
In patent documents 1 and 2, a viscosity index improver having excellent shear stability is blended with a low viscosity base oil to further reduce the viscosity of a lubricating oil (kinematic viscosity at 100 ℃: at least 6.2 mm)2In s). However, since the decrease in viscosity of the lubricating oil due to the actual vehicle traveling cannot be completely suppressed, there is a limit to the decrease in viscosity when the oil is new.
In patent document 3, the viscosity is reduced (kinematic viscosity at 100 ℃ C.: about 6.0mm in the examples) without blending the polymethacrylate compound in the lubricating oil2And/s or more) and the friction characteristics are maintained by preventing wear during the synchronous engagement by blending the molybdenum compound in the lubricating oil.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2012 and 193255
Patent document 2: japanese patent laid-open publication No. 2014-177605
Patent document 3: japanese patent laid-open No. 2014-98090.
Disclosure of Invention
Problems to be solved by the invention
The techniques described in patent documents 1 to 3 do not solve the problem of the lubricating oil being reduced in viscosity. Further, the demand for improvement in heat resistance and oxidation stability accompanying reduction in size and weight of the device has not been sufficiently satisfied.
The present invention has been made in view of the above circumstances. That is, an object of the present invention is to provide a lubricating oil composition which has a reduced viscosity, suppresses a decrease in viscosity during actual vehicle running, and improves heat resistance and oxidation stability.
Means for solving the problems
As a result of intensive studies, the present inventors have found that a lubricating oil composition containing a base oil and specific components (A) to (C) as essential components can solve the above problems.
Namely, the present invention provides the following [1] to [5 ].
[1] A lubricating oil composition comprising, in combination with a base oil:
an olefin oligomer (A) having a mass-average molecular weight of 500 to 5000,
An antioxidant (B) comprising a phenolic antioxidant (B-1) and an amine antioxidant (B-2), and
an alkaline earth metal-based detergent (C),
the content of the alkaline earth metal-based detergent (C) in terms of alkaline earth metal atoms is 1700 ppm by mass or more and 2700 ppm by mass or less based on the total amount of the lubricating oil composition,
kinematic viscosity at 100 ℃ of 4.0mm26.0mm of a length of more than s2The ratio of the water to the water is less than s.
[2] A transmission filled with the lubricating oil composition according to [1 ].
[3] A lubricating method, wherein the lubricating oil composition according to [1] above is used.
[4] A method for using the lubricating oil composition according to [1] above in a transmission.
[5] A method for producing a lubricating oil composition, comprising blending into a base oil: an olefin oligomer (A) having a mass-average molecular weight of 500 to 5000, an antioxidant (B) comprising a phenol antioxidant (B-1) and an amine antioxidant (B-2), and an alkaline earth metal detergent (C), wherein the alkaline earth metal detergent (C) is blended so that the content thereof in terms of alkaline earth metal atoms is 1700 ppm to 2700 ppm by mass based on the total amount of the lubricating oil composition.
ADVANTAGEOUS EFFECTS OF INVENTION
The present invention can provide a lubricating oil composition which has a reduced viscosity, suppresses a decrease in viscosity during actual vehicle running, and has improved heat resistance and oxidation stability.
Detailed Description
Hereinafter, one embodiment of the present invention will be described in detail. In the present invention, "kinematic viscosity at 100 ℃" and "kinematic viscosity at 40 ℃" of the base oil or the lubricating oil composition are based on JIS K2283: 2000, the value measured by the method described in the above.
In the present invention, the content of the alkaline earth metal atom in the lubricating oil composition is a value measured in accordance with JPI-5S-38-92.
In the present invention, "alkaline earth metal atom" means beryllium atom, magnesium atom, calcium atom, strontium atom, and barium atom.
The lubricating oil composition according to the present embodiment contains a base oil and, in addition thereto: an olefin oligomer (A) having a mass-average molecular weight of 500 to 5000 inclusive, an antioxidant (B) comprising a phenol antioxidant (B-1) and an amine antioxidant (B-2), and an alkaline earth metal detergent (C), wherein the alkaline earth metal detergent (C) is contained in an amount of 1700 to 2700 mass ppm in terms of alkaline earth metal atoms, based on the total amount of the lubricating oil composition, and has a kinematic viscosity of 4.0mm at 100 DEG C26.0mm of a length of more than s2The ratio of the water to the water is less than s.
In the lubricating oil composition according to one embodiment of the present invention, the total content of the base oil, the olefin oligomer (a), the antioxidant (B), and the alkaline earth metal detergent (C) is preferably 70% by mass or more, more preferably 75% by mass or more, further preferably 80% by mass or more, further preferably 85% by mass or more, and still further preferably 90% by mass or more, based on the total amount (100% by mass) of the lubricating oil composition, and is usually 100% by mass or less, preferably 99.9% by mass or less, and more preferably 99% by mass or less.
Hereinafter, each component to be blended in the lubricating oil composition of the present embodiment will be described.
< olefin oligomer (A) >
The lubricating oil composition of the present embodiment contains an olefin oligomer (a), and the mass average molecular weight of the olefin oligomer (a) must be 500 or more and 5000 or less.
The olefin oligomer (a) has fluidity in a high-temperature portion of a device such as a transmission, and has an effect of flushing generated sludge. If the molecular weight of the olefin oligomer (A) is less than 500, it evaporates in a high temperature region, and the washing effect cannot be sufficiently achieved. If the molecular weight of the olefin oligomer (a) is greater than 5000, fluidity in a high temperature region cannot be ensured, and the effect of flushing sludge cannot be sufficiently exhibited.
The mass average molecular weight of the olefin oligomer (a) is preferably 600 or more and 4500 or less, more preferably 700 or more and 4000 or less, and further preferably 800 or more and 3000 or less.
The olefin oligomer (a) has a polyolefin skeleton, and is not particularly limited as long as the molecular weight is 500 to 5000. The olefin oligomer (a) preferably has a structural unit derived from an unsaturated hydrocarbon monomer having 2 to 5 carbon atoms, and examples thereof include olefin oligomers such as propylene oligomers, isobutylene oligomers, polybutene, polyisobutylene, octene oligomers, decene oligomers, and ethylene-propylene oligomers. Among them, polybutene-1 is suitably used.
The olefin oligomer (A) may be used alone in 1 kind, or may be used in combination in 2 or more kinds.
The olefin oligomer (A) can attain a kinematic viscosity of 4.0mm at 100 ℃ of the lubricating oil composition of the present embodiment26.0mm of a length of more than s2The blending ratio is within a range of not more than s. Specifically, the content of the olefin oligomer (a) having a mass-average molecular weight of 500 or more and 5000 or less in the lubricating oil composition of the present embodiment is preferably 0.8% by mass or more and 4.5% by mass or less, more preferably 1% by mass or more and 4% by mass or less, and still more preferably 1.2% by mass or more and 2.5% by mass or less, based on the total amount of the lubricating oil composition.
< antioxidant (B) >
The lubricating oil composition of the present embodiment contains an antioxidant (B) comprising a phenolic antioxidant (B-1) and an amine antioxidant (B-2). In the present embodiment, the antioxidant (B) is required to be a combination of the phenol-based antioxidant (B-1) and the amine-based antioxidant (B-2), and sufficient antioxidant performance cannot be obtained when only one of them is used.
The phenolic antioxidant (B-1) is not particularly limited as long as it has a phenolic structure and has an effect of inhibiting oxidation of the lubricating oil composition.
Examples of the phenolic antioxidant (B-1) include 2, 6-di-t-butyl-4-methylphenol, 2, 6-di-t-butyl-4-ethylphenol, 2,4, 6-tri-t-butylphenol, 2, 6-di-t-butyl-4-hydroxymethylphenol, 2, 6-di-t-butylphenol, 2, 4-dimethyl-6-t-butylphenol, 2, 6-di-t-butyl-4- (N, N ' -dimethylaminomethyl) phenol, 2, 6-di-t-pentyl-4-methylphenol, 2, 6-di-t-pentyl-p-cresol, 4' -methylenebis (2, 6-di-t-butylphenol), 4' -bis (2, 6-di-t-butylphenol), 4,4 '-bis (2-methyl-6-t-butylphenol), 2' -methylenebis (4-ethyl-6-t-butylphenol), 2 '-methylenebis (4-methyl-6-t-butylphenol), 4' -butylidenebis (3-methyl-6-t-butylphenol), 4 '-isopropylidenebis (2, 6-di-t-butylphenol), 2' -methylenebis (4-methyl-6-nonylphenol), 2 '-isobutylidenebis (4, 6-dimethylphenol), 2' -methylenebis (4-methyl-6-cyclohexylphenol), 2, 4-dimethyl-6-t-butylphenol, 2,4 '-dimethylt-butylphenol, 2' -methylenebis (4-methyl-6-t-butylphenol), 2,4 '-dimethylt-butylphenol, 2, 6-butylphenol, 2' -butylphenol, 2-methyl-6-t-butylphenol, 2-butylphenol, 2-methyl-6-t-butylphenol, and the like, 4,4 '-thiobis (2-methyl-6-t-butylphenol), 4' -thiobis (3-methyl-6-t-butylphenol), 2 '-thiobis (4-methyl-6-t-butylphenol), bis (3-methyl-4-hydroxy-5-t-butylphenyl methyl) sulfide, bis (3, 5-di-t-butyl-4-hydroxybenzyl) sulfide, 2' -thio-diethylene bis [3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ], tridecyl 3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate, pentaerythrityl tetrakis [3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ], octyl 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, octadecyl 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, octyl 3- (3-methyl-5-tert-butyl-4-hydroxyphenyl) propionate, and the like.
In the present embodiment, the phenolic antioxidant (B-1) may be used alone in 1 kind, or may be used in combination in 2 or more kinds.
The amine-based antioxidant (B-2) that can be used in the present embodiment is not particularly limited. For example, a compound represented by the following general formula (B-2-1) may be mentioned.
[ solution 1]
(wherein Ar is1And Ar2Each independently represents an aryl group having 6 to 24 carbon atoms selected from the group consisting of a phenyl group, a phenyl group substituted with an alkyl group, a phenyl group substituted with an aralkyl group, a naphthyl group, and a naphthyl group substituted with an alkyl group).
More specifically, the amine antioxidant (B-2) is preferably selected from phenyl-alpha-naphthylamines represented by the following general formula (B-2-2) and diphenylamines represented by the general formula (B-2-3).
[ solution 2]
(in the formula, R1Represents a hydrogen atom or an alkyl group having 1 to 18 carbon atoms).
[ solution 3]
(in the formula, R2And R3Each independently represents a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, or an aralkyl group having 7 to 18 carbon atoms).
Specific examples of the amine-based antioxidant (B-2) include monoalkyldiphenylamine-based antioxidants such as monooctyldiphenylamine and monononyldiphenylamine; dialkyl diphenylamine systems such as 4,4 '-dibutyl diphenylamine, 4' -dipentyl diphenylamine, 4 '-dihexyl diphenylamine, 4' -diheptyl diphenylamine, 4 '-dioctyl diphenylamine, and 4,4' -dinonyl diphenylamine; polyalkyl diphenylamine-based amines such as tetrabutyldiphenylamine, tetrahexyldiphenylamine, tetraoctyldiphenylamine and tetranonyldiphenylamine, naphthylamine-based amines such as α -naphthylamine and phenyl- α -naphthylamine, butylphenyl- α -naphthylamine, pentylphenyl- α -naphthylamine, hexylphenyl- α -naphthylamine, heptylphenyl- α -naphthylamine, octylphenyl- α -naphthylamine and nonylphenyl- α -naphthylamine; diphenylamine, monobutylphenylmonooctylphenylamine, N-p-tert-octylphenyl-1-naphthylamine, 4' -bis (. alpha.,. alpha. -dimethylbenzyl) diphenylamine and the like.
In the present embodiment, the amine antioxidant (B-2) may be used alone in 1 kind, or may be used in combination in 2 or more kinds.
Specific examples of the phenolic antioxidant (B-1) and the amine antioxidant (B-2) which can be used in combination as the antioxidant (B) include any combination of (B-1) which is pentaerythritol tetrakis [3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ] or octadecyl 3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate and (B-2) which is monobutylphenylmonooctylphenylamine or N-p-t-octylphenyl-1-naphthylamine.
In the present embodiment, the content of the antioxidant (B) including the phenol-based antioxidant (B-1) and the amine-based antioxidant (B-2) is preferably 0.5% by mass or more and 3.0% by mass or less, more preferably 0.5% by mass or more and 2.0% by mass or less, and further preferably 1% by mass or more and 2% by mass or less, based on the total amount of the lubricating oil composition. Here, the content of the antioxidant (B) represents the total amount of the phenolic antioxidant (B-1) and the amine antioxidant (B-2).
The antioxidant effect is sufficiently exhibited if the content of the antioxidant (B) is 0.5% by mass or more. From the viewpoint of antioxidant effect, the upper limit of the content of the antioxidant (B) is sufficient to be 3.0 mass%.
The mass ratio [ (B-2)/(B-1) ] of the phenolic antioxidant (B-1) to the amine antioxidant (B-2) is not particularly limited, and is preferably about 1/3 to 3/1, more preferably about 1/2 to 2/1.
Further, in the present embodiment, the total content of the phenolic antioxidant (B-1) and the amine antioxidant (B-2) in the antioxidant (B) is preferably 60% by mass or more and 100% by mass or less, more preferably 70% by mass or more and 100% by mass or less, further preferably 80% by mass or more and 100% by mass or less, further preferably 90% by mass or more and 100% by mass or less, and further preferably 99% by mass or more and 100% by mass or less, based on the total amount of the antioxidants (B).
As described above, in the present embodiment, the phenol-based antioxidant (B-1) and the amine-based antioxidant (B-2) must be used in combination as the antioxidant (B), but the inclusion of other antioxidants is not excluded as long as the effects of the present embodiment are not impaired. Examples of the other antioxidant include molybdenum amine complex-based antioxidants.
As the molybdenum amine complex antioxidant, a compound obtained by reacting a 6-valent molybdenum compound, specifically molybdenum trioxide and/or molybdic acid, with an amine compound, for example, a compound obtained by the production method described in japanese patent application laid-open No. 2003-252887, can be used.
< alkaline earth metal-based detergent (C) >)
The lubricating oil composition of the present embodiment contains the alkaline earth metal-based detergent (C), and the content of the alkaline earth metal-based detergent (C) in terms of alkaline earth metal atoms needs to be 1700 ppm by mass or more and 2700 ppm by mass or less, based on the total amount of the lubricating oil composition.
The alkaline earth metal-based detergent (C) suppresses the generation of sludge by the acid neutralization of the deteriorated components generated in the oil, and has a detergent effect of dispersing the generated sludge.
If the content of the alkaline earth metal-based detergent (C) in terms of alkaline earth metal atoms is less than 1700 mass ppm based on the total amount of the lubricating oil composition, the above-mentioned neutralizing effect cannot be sufficiently exerted, and the oxidation stability and heat resistance are poor. If the content of the alkaline earth metal-based detergent (C) in terms of alkaline earth metal atoms is more than 2700 mass ppm, the amount of metal in the composition increases to form nuclei for sludge formation, resulting in poor heat resistance. The content of the alkaline earth metal-based detergent (C) in terms of alkaline earth metal atoms based on the total amount of the lubricating oil composition is preferably 1800 ppm by mass or more and 2600 ppm by mass or less, more preferably 1900 ppm by mass or more and 2500 ppm by mass or less, and still more preferably 2000 ppm by mass or more and 2500 ppm by mass or less.
As the alkaline earth metal detergent (C), at least 1 kind selected from alkaline earth metal sulfonates, alkaline earth metal phenates, and alkaline earth metal salicylates described in detail below may be used, or a mixture of 2 or more kinds may be used. Among them, alkaline earth metal sulfonates are preferable in terms of heat resistance.
The alkaline earth metal sulfonate includes alkaline earth metal salts, particularly magnesium salts and/or calcium salts, of alkyl aromatic sulfonic acids obtained by sulfonating alkyl aromatic compounds having a molecular weight of 300 to 1,500, preferably 400 to 700. Among them, calcium salts are preferably used. The alkaline earth metal phenate includes alkaline earth metal salts, particularly magnesium salts and/or calcium salts, of mannich reactants of alkylphenol, alkylphenol sulfide, and alkylphenol, and particularly, calcium salts are preferable. The alkaline earth metal salicylate includes alkaline earth metal salts of alkylsalicylic acid, particularly magnesium salts and/or calcium salts, and among them, calcium salts are preferable.
The number of carbon atoms of the alkyl group constituting the alkaline earth metal-based detergent (C) is preferably 4 to 30, more preferably 6 to 18, and the alkyl group may be a straight chain or a branched chain. The alkyl group may be any of a primary alkyl group, a secondary alkyl group, and a tertiary alkyl group.
Further, the alkaline earth metal sulfonate, alkaline earth metal phenate, and alkaline earth metal salicylate may be any of neutral, basic, and overbased. Examples of the neutral alkaline earth metal salt include neutral alkaline earth metal sulfonates, neutral alkaline earth metal phenates, and neutral alkaline earth metal salicylates obtained by reacting a mannich reaction product of the aforementioned alkyl aromatic sulfonic acid, alkyl phenol sulfide, alkyl phenol, or alkyl salicylic acid with an alkaline earth metal base such as an oxide or hydroxide of an alkaline earth metal of magnesium and/or calcium, or by preparing an alkali metal salt such as a sodium salt or a potassium salt once and then substituting the alkali metal salt with the alkaline earth metal salt. Examples of the basic alkaline earth metal salt include basic alkaline earth metal sulfonates, basic alkaline earth metal phenates, and basic alkaline earth metal salicylates obtained by heating the above-mentioned neutral alkaline earth metal sulfonates, neutral alkaline earth metal phenates, and neutral alkaline earth metal salicylates with an excess of alkaline earth metal salt, and alkaline earth metal base in the presence of water. Examples of the overbased alkaline earth metal salts include overbased alkaline earth metal sulfonates, overbased alkaline earth metal phenates, and overbased alkaline earth metal salicylates obtained by reacting the neutral alkaline earth metal sulfonates, neutral alkaline earth metal phenates, and neutral alkaline earth metal salicylates described above with an alkaline earth metal carbonate or borate in the presence of a carbonic acid gas. The alkaline earth metal-based detergent (C) is generally commercially available in a diluted state such as a light lubricating oil base oil, and can be obtained, and it is generally preferable to use a detergent having a metal content of 1.0 to 20 mass%, preferably 2.0 to 16 mass%.
The metal ratio of the alkaline earth metal detergent (C) of the present embodiment is not particularly limited, and 1 or a mixture of 2 or more metals having a metal ratio of 20 or less may be used. The metal ratio is preferably 3 or less, more preferably 1.5 or less, and particularly preferably 1.2 or less, because it is excellent in oxidation stability, base number retention property, and heat resistance at high temperatures.
The metal ratio referred to herein is expressed by the valence number of the metal element x the content (mol%) of the metal element/the content (mol%) of the soap group in the metal-based detergent, the metal element means calcium, magnesium, and the like, and the soap group means a sulfonic acid group, a phenol group, a salicylic acid group, and the like.
The alkaline earth metal-based detergent (C) may be any of the neutral, basic and overbased detergents described above, and examples thereof include alkaline earth metal-based detergents (C) having a base number of usually not less than 10mgKOH/g and not more than 500mgKOH/g, preferably not less than 15mgKOH/g and not more than 450mgKOH/g, and 1 kind or 2 or more kinds may be used in combination. In the present embodiment, the alkali and the overbase are more preferable, and the alkali value is preferably 150mgKOH/g or more and 450mgKOH/g or less. By having a base number of 150mgKOH/g or more and 450mgKOH/g or less, more excellent oxidation stability is exhibited and heat resistance is also excellent. The base number of the alkaline earth metal detergent (C) referred to herein is defined as the number determined by JISK 2501: 2003: values determined by the perchloric acid method. The base number of the alkaline earth metal detergent (C) is more preferably 200mgKOH/g to 450mgKOH/g, still more preferably 250mgKOH/g to 400 mgKOH/g.
The alkaline earth metal atom contained in the alkaline earth metal detergent (C) includes 1 or 2 or more kinds selected from a beryllium atom, a magnesium atom, a calcium atom, a strontium atom, and a barium atom, and from the viewpoint of improving high-temperature heat resistance, calcium, magnesium, or barium is preferable, calcium or magnesium is more preferable, and calcium is further preferable. As the alkaline earth metal-based detergent (C), calcium sulfonate is suitably used.
< Polymer (D) > < mass average molecular weight > 5000
The lubricating oil composition of the present embodiment may contain a polymer (D) having a mass average molecular weight of more than 5000. However, when the polymer (D) is contained, the content of the polymer (D) is preferably less than 50 parts by mass per 100 parts by mass of the olefin oligomer (A). If the ratio of the olefin oligomer (a) to 100 parts by mass is within the above range, heat resistance in a high-temperature portion of a transmission, for example, can be ensured. In addition, if the amount of the polymer (D) is within the above range, the decrease in viscosity during actual vehicle running or the like due to shearing or the like of the polymer compound can be reduced without limitation. The content of the polymer (D) is more preferably less than 30 parts by mass, and still more preferably less than 20 parts by mass, based on 100 parts by mass of the olefin oligomer (a). The mass average molecular weight of the polymer (D) is preferably 120,000 or less, more preferably 50,000 or less, and further preferably 40,000 or less.
The polymer (D) is not particularly limited, and examples thereof include polymethacrylates generally used as pour point depressants. The lubricating oil composition of the present embodiment can maintain stable oil film strength at high temperatures even without containing a viscosity index improver, and therefore does not need to contain a viscosity index improver. Further, even in the case of containing the polymer (D) classified as a viscosity index improver, by setting the mass ratio within the range described above, excellent shear stability is achieved.
< Zinc dithiophosphate (E) >
The lubricating oil composition of the present embodiment may contain zinc dithiophosphate (E). As the zinc dithiophosphate (E), one represented by the following general formula (E-1) is used.
[ solution 4]
(in the formula, R4~R7Each independently represents a group selected from a linear, branched or cyclic alkyl group having 1 to 24 carbon atoms and a linear, branched or cyclic alkenyl group having 1 to 24 carbon atoms).
In the general formula (E-1), R4~R7Each independently represents a linear, branched or cyclic alkyl group having 1 to 24 carbon atoms or a linear, branched or cyclic alkenyl group having 1 to 24 carbon atoms, and may be different from or the same as each other, but preferably the same from the viewpoint of ease of production.
R4~R7Preferably linear, and R is4~R7Preferably an alkyl group.
As R4~R7Examples of the alkyl group in (b) include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, a decyl group, an undecyl group, a dodecyl group, a tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a heptadecyl group, an octadecyl group, a nonadecyl group, an eicosyl group, a heneicosyl group, a docosyl group, a tricosyl group and a tetracosyl group, and these groups may be linear, branched or cyclic. Examples of the alkenyl group include a vinyl group, a propenyl group, a butenyl group, a pentenyl group, a hexenyl group, a heptenyl group, an octenyl group, a nonenyl group, a decenyl group, an undecenyl group, a dodecenyl group, a tridecenyl group, a tetradecenyl group, a pentadecenyl group, a hexadecenyl group, a heptadecenyl group, an octadecenyl group, a nonadecenyl group, an eicosenyl group, a heneicosenyl group, a docosenyl group, a tricosenyl group, and a tetracosenyl group, which may be linear, branched, or cyclic, and may have a double bond at a positionThe arrangement is also arbitrary.
When the lubricating oil composition of the present embodiment contains zinc dithiophosphate (E), the content thereof is usually 0.05% by mass or more and 5% by mass or less, preferably 0.1% by mass or more and 3% by mass or less, and more preferably 1% by mass or more and 2.5% by mass or less, based on the total amount of the composition. If the content of the zinc dithiophosphate (E) is within the above range, the friction coefficient (μ) can be increased at the time of shifting when used as MTF (manual transmission oil), for example, and the shift feel can be improved.
< base oil >
The base oil used in the present embodiment may be either mineral oil or synthetic oil, or may be a mixed oil of mineral oil and synthetic oil.
Examples of the mineral oil include atmospheric residue oil obtained by atmospheric distillation of crude oil such as paraffinic crude oil, mixed crude oil, or naphthenic crude oil; a distillate obtained by subjecting the atmospheric residue to vacuum distillation; and refined oils and waxes obtained by subjecting the distillate oil to at least 1 type of refining treatment such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, catalytic dewaxing, and hydro-modification.
In the present embodiment, from the viewpoint of suppressing the generation of sludge, mineral oils classified as group 2 or group 3 in the base oil category of API (american petroleum institute) are preferable. In order to improve oxidation stability, the classification into 3 types is more preferable. The base oil classified into group 2 has a saturation component of 90% or more and a sulfur component of 0.03% or less, and has a viscosity index of less than 80 to 120. The base oil classified into group 3 has a saturation component of 90% or more, a sulfur component of 0.03% or less, and a viscosity index of 120 or more.
The sulfur component is a sulfur-containing compound represented by JIS K2541-6: 2013, the saturated component is a value measured in accordance with ASTM D2007. Further, the viscosity index is according to JISK 2283: 2000 measured values.
Examples of the synthetic oil include various esters such as polyol esters, dibasic acid esters (e.g., ditridecyl glutarate), tribasic acid esters (e.g., 2-ethylhexyl trimellitate), and phosphate esters; various ethers such as polyphenylene ether; a polyalkylene glycol; an alkylbenzene; an alkyl naphthalene; synthetic oils obtained by isomerizing waxes produced by the fischer-tropsch process (Gas-To-Liquids) waxes).
In the present embodiment, these base oils may be used alone, or 2 or more thereof may be used in combination. The kinematic viscosity at 100 ℃ of the base oil used in the present embodiment is preferably 2.0mm2More than s and 30mm2Less than s, more preferably 2.5mm2More than s and 25mm2(ii) less than s, more preferably 3.0mm2More than s and 20mm2The ratio of the water to the water is less than s.
The viscosity index of the base oil used in the present embodiment is preferably 80 or more, more preferably 90 or more, and even more preferably 120 or more, from the viewpoint of producing a lubricating oil composition in which the fuel economy is improved while suppressing a change in viscosity due to a change in temperature.
When a mixed oil obtained by combining 2 or more base oils is used, the kinematic viscosity and viscosity index of the mixed oil are preferably in the above ranges.
In the present embodiment, the content of the base oil is preferably 75% by mass or more, more preferably 80% by mass or more, and further preferably 85% by mass or more, and is preferably 97% by mass or less, and more preferably 95% by mass or less, based on the total amount of the composition.
< other additives >
The lubricating oil composition for transmissions of the present embodiment may contain additives such as a friction modifier, a dispersant, and an antifoaming agent. However, the pour point depressant is classified as a polymer (D) having a mass average molecular weight of more than 5000, and is not included in other additives.
The amount of the additive is preferably 10% by mass or less, more preferably 7.5% by mass or less, and still more preferably 5.0% by mass or less, based on the total amount of the composition.
< physical Properties of lubricating oil composition >
The kinematic viscosity at 100 ℃ of the lubricating oil composition of the present embodiment is 4.0mm26 or more per s.0mm2The ratio of the water to the water is less than s. If the kinematic viscosity at 100 ℃ is less than 4.0mm2As a result, the oil film strength decreases, and the seizure resistance, wear resistance, fatigue resistance, and the like decrease. If the kinematic viscosity at 100 ℃ is greater than 6.0mm2The stirring resistance becomes large as/s, which is not preferable in terms of fuel economy.
The kinematic viscosity at 100 ℃ of the lubricating oil composition of the present embodiment is more preferably 4.5mm25.8mm of more than s2(ii) less than s, more preferably 4.6mm25.5mm of more than s2The ratio of the water to the water is less than s.
< use, lubricating method, transmission >
The lubricating oil composition of the present embodiment can be suitably used for transmission oil applications.
The lubricating oil composition of the present embodiment has low viscosity, suppresses a decrease in viscosity during actual vehicle traveling, and is excellent in heat resistance and oxidation stability. Therefore, in the transmission which is small and light, for example, adhesion of sludge in the synchromesh mechanism is suppressed, and a good shift feeling is obtained. Further, the synchronizer ring operation can be kept favorable. Accordingly, the present embodiment can also provide a lubricating method and a use method using the above lubricating oil composition.
Further, the present embodiment can also provide a transmission filled with the lubricating oil composition.
< method for producing lubricating oil composition >
The lubricating oil composition of the present embodiment can be produced by the following method for producing a lubricating oil composition: respectively matching the components in the base oil: an olefin oligomer (A) having a mass-average molecular weight of 500 to 5000, an antioxidant (B) comprising a phenol antioxidant (B-1) and an amine antioxidant (B-2), and an alkaline earth metal detergent (C), wherein the alkaline earth metal detergent (C) is blended so that the content thereof in terms of alkaline earth metal atoms is 1700 ppm to 2700 ppm by mass based on the total amount of the lubricating oil composition.
Examples
Next, the present embodiment will be described more specifically with reference to examples, but the present embodiment is not limited to these examples.
< methods of measurement >
(1) Mass average molecular weight (Mw)
The measurement was carried out by GPC (gel permeation chromatography) method in terms of standard polystyrene. Specifically, the measurement was carried out under the following apparatus and conditions.
Seed and seed GPC device: waters 1515 Isoratic HPLC Pump + Waters 2414 reflective Index Detector (all made by Waters Co.)
Seed and pillar: to which 2 pieces of "TSKgel SuperMultiporeHZ-M" (manufactured by Toho ソー Co., Ltd.)
Seed and pillar temperature: 40 deg.C
Seed and seed eluents: tetrahydrofuran (THF)
Seed and flow rate: 0.35 mL/min
Seed and seed detectors: a refractive index detector.
(2) Kinematic viscosity
According to JIS K2283: 2000, kinematic viscosity at each temperature was measured.
(3) The lubricating oil composition contains calcium atoms, nitrogen atoms, phosphorus atoms and sulfur atoms
The content of each component was measured by the following method.
(3-1) content of calcium atom (Ca) and content of phosphorus atom (P)
Measured according to JPI-5S-38-92.
(3-2) content of Nitrogen atom (N)
According to JIS K2609: 1998.
(3-3) content of sulfur atom (S)
According to JIS K2541-6: 2013.
< evaluation method >
(I) Coking test of face plate
The test was carried out for 3 hours in a cycle of a splash time of 15 seconds and a stop time of 45 seconds under conditions of a panel temperature of 300 ℃ and an oil temperature of 100 ℃ in accordance with Federal test method 791B, seeds 3462. After the test, the weight (mg) of the coke adhered to the panel was measured.
(II) Oxidation stability
By the method according to JIS K2514-1: 2013 (165.5 ℃ C.), a test oil (lubricating oil composition) was forcibly deteriorated by placing copper pieces and iron pieces as a catalyst, and the base number after 96 hours was measured (perchloric acid method). The higher the base number value after the test, the higher the base number retention, and this indicates a long-acting oil that can be used for a longer period of time. After the above-mentioned ISOT test, the n-pentane insoluble content was measured (method a).
(III) shear stability
According to JIS K2283: the kinematic viscosity at 100 ℃ before and after the shear test was measured at 2000, and the shear stability was calculated by the following formula. The shear test was carried out by ultrasonic wave A method (JPI-5S-29-06) under the measurement conditions of an ultrasonic wave irradiation time of 60 minutes, a room temperature and an oil amount of 30 cc. The output voltage of the ultrasonic wave in the shear stability test is an output voltage which is recorded as a decrease rate of the kinematic viscosity at 100 ℃ of 25% after 30cc irradiation of the standard oil for 10 minutes.
Shear stability (%) = { ([ kinematic viscosity before test ] - [ kinematic viscosity after test ])/[ kinematic viscosity before test ] } × 100.
Examples 1 to 6 and comparative examples 1 to 7
Lubricating oil compositions were prepared by blending the components shown in tables 1 and 2, respectively. The lubricating oil compositions prepared in the examples and comparative examples were subjected to the tests shown in (I) to (III) above, in addition to the measurement of the acid value, kinematic viscosity at 40 ℃ and kinematic viscosity at 100 ℃ before various tests, and the amounts of calcium, nitrogen, phosphorus and sulfur. These results are also shown together in the table.
[ Table 1]
[ Table 2]
The compounding ingredients of the above examples and comparative examples are as follows.
< Complex Material >
(1) Base oil
Class III mineral oils (kinematic viscosity at 40 ℃ C.: 18.9 mm) categorized as API base oil classes2S, kinematic viscosity at 100 ℃: 4.2mm2(s), viscosity index: 128).
(2) Olefin oligomers
Component (A)
Seed oligomers 1: polybutene-1 having a mass average molecular weight (Mw) of 940
Seeding of oligomers 2: polybutene-1 having a mass average molecular weight (Mw) of 2300
Olefin oligomer other than component (A)
Seed oligomers 3: decene oligomer having mass average molecular weight (Mw) of 10000
Seed oligomers 4: ethylene-propylene having a mass average molecular weight (Mw) of 12000
Seeding of oligomers 5: ethylene-propylene having a mass average molecular weight (Mw) of 17000.
(3) Antioxidant (B)
Phenol series antioxidant (B-1)
Seeds (B-1-A): octadecyl 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate
Seeds and antioxidants (B-1-B): pentaerythritol tetrakis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ]
Amine antioxidant (B-2)
Seeds (B-2-C): monobutyl phenyl mono octyl phenyl amine
Seeds (B-2-D): n-p-tert-octylphenyl-1-naphthylamine.
(4) Alkaline earth metal detergent (C)
As a result, a basic value of a basic excess-basic calcium sulfonate (base number: 400mgKOH/g, measured by JISK 2501: 2003: perchloric acid method) was obtained.
(5) Zinc dithiophosphate (E)
Zizanil zinc dithiophosphate (n-hexyl).
(6) Other additives: a sulfur extreme pressure agent, a dispersant, an ashless friction modifier and a defoaming agent.
As is clear from Table 1, the lubricating oil compositions of examples 1 to 6 have low kinematic viscosity at 100 ℃ and excellent heat resistance and oxidation stability. Further, it is found that since a polymer having a high molecular weight such as a viscosity index improver which causes a viscosity decrease by shear is not required, the viscosity decrease rate is low even after the shear test, and the viscosity decrease during actual vehicle running can be sufficiently suppressed.
On the other hand, the following is clear from table 2. From comparative example 1, it is understood that if the content in terms of calcium atoms of the component (C) based on the total amount of the lubricating oil composition does not reach the present embodiment, the oxidation stability is poor. It is found that, as in comparative example 2, if the content in terms of calcium atoms of the component (C) based on the total amount of the lubricating oil composition is too high, the amount of sludge increases and the heat resistance is poor. It is found that, as in comparative examples 3 to 5, if a material having a mass average molecular weight outside the range of the present application is used as the olefin oligomer, the heat resistance is poor. In particular, in comparative example 5, the oligomer used was a material having a mass average molecular weight of 17,000, and therefore, the shear stability was poor. It is clear from comparative examples 6 and 7 that the heat resistance is inferior when the phenol-based antioxidant and the amine-based antioxidant are not used in combination as the antioxidant (B).
Industrial applicability
According to the present invention, it is possible to provide a lubricating oil composition which has a reduced viscosity, suppresses a decrease in viscosity during actual vehicle running, and has improved heat resistance and oxidation stability due to a reduction in size and weight of the device.
Claims (52)
1. Lubricating oil composition, characterized by comprising, in addition to a base oil:
an olefin oligomer (A) having a mass-average molecular weight of 500 to 5000,
An antioxidant (B) comprising a phenolic antioxidant (B-1) and an amine antioxidant (B-2), and
an alkaline earth metal-based detergent (C),
the content of the alkaline earth metal-based detergent (C) in terms of alkaline earth metal atoms is 1700 ppm by mass or more and 2700 ppm by mass or less based on the total amount of the lubricating oil composition,
kinematic viscosity at 100 ℃ of 4.0mm26.0mm of a length of more than s2The ratio of the water to the water is less than s.
2. The lubricating oil composition according to claim 1, wherein the total content of the base oil, the olefin oligomer (a), the antioxidant (B), and the alkaline earth metal-based detergent (C) is 70 mass% or more based on the total amount of the lubricating oil composition.
3. The lubricating oil composition according to claim 1 or 2, wherein the olefin oligomer (a) comprises a structural unit derived from an unsaturated hydrocarbon monomer having 2 or more and 5 or less carbon atoms.
4. The lubricating oil composition according to claim 1 or 2, wherein the olefin oligomer (a) is at least one selected from the group consisting of a propylene oligomer, an isobutylene oligomer, polybutene, polyisobutylene, an octene oligomer, a decene oligomer and an ethylene-propylene oligomer.
5. The lubricating oil composition according to claim 4, wherein the olefin oligomer (A) is polybutene.
6. The lubricating oil composition according to claim 1 or 2, wherein the content of the olefin oligomer (a) is 0.8 mass% or more and 4.5 mass% or less based on the total amount of the lubricating oil composition.
7. The lubricating oil composition according to claim 1 or 2, wherein the phenolic antioxidant (B-1) is selected from the group consisting of 2, 6-di-t-butyl-4-methylphenol, 2, 6-di-t-butyl-4-ethylphenol, 2,4, 6-tri-t-butylphenol, 2, 6-di-t-butyl-4-hydroxymethylphenol, 2, 6-di-t-butylphenol, 2, 4-dimethyl-6-t-butylphenol, 2, 6-di-t-butyl-4- (N, N '-dimethylaminomethyl) phenol, 2, 6-di-t-amyl-4-methylphenol, 2, 6-di-t-amyl-p-cresol, 4' -methylenebis (2, 6-di-t-butylphenol), 4,4' -bis (2, 6-di-tert-butylphenol), 4' -bis (2-methyl-6-tert-butylphenol), 2' -methylenebis (4-ethyl-6-tert-butylphenol), 2' -methylenebis (4-methyl-6-tert-butylphenol), 4' -butylidenebis (3-methyl-6-tert-butylphenol), 4' -isopropylidenebis (2, 6-di-tert-butylphenol), 2' -methylenebis (4-methyl-6-nonylphenol), 2' -isobutylidenebis (4, 6-dimethylphenol), 2' -methylenebis (4-methyl-6-cyclohexylphenol), 2, 4-dimethyl-6-t-butylphenol, 4 '-thiobis (2-methyl-6-t-butylphenol), 4' -thiobis (3-methyl-6-t-butylphenol), 2 '-thiobis (4-methyl-6-t-butylphenol), bis (3-methyl-4-hydroxy-5-t-butylphenyl) sulfide, bis (3, 5-di-t-butyl-4-hydroxybenzyl) sulfide, 2' -thio-diethylenebis [3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ], tridecyl 3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate, Pentaerythritol tetrakis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ], octyl 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, octadecyl 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, and octyl 3- (3-methyl-5-tert-butyl-4-hydroxyphenyl) propionate.
8. The lubricating oil composition according to claim 1 or 2, wherein the amine-based antioxidant (B-2) is a compound represented by the following general formula (B-2-1),
in the above general formula (B-2-1), Ar1And Ar2Each independently represents an aryl group having 6 to 24 carbon atoms selected from the group consisting of a phenyl group, a phenyl group substituted with an alkyl group, a phenyl group substituted with an aralkyl group, a naphthyl group, and a naphthyl group substituted with an alkyl group.
9. The lubricating oil composition according to claim 8, wherein the amine antioxidant (B-2) is at least one of a phenyl- α -naphthylamine represented by the following general formula (B-2-2) and a diphenylamine represented by the following general formula (B-2-3),
in the above general formula (B-2-2), R1Represents a hydrogen atom or an alkyl group having 1 to 18 carbon atoms,
in the above general formula (B-2-3), R2And R3Each independently represents a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, or an aralkyl group having 7 to 18 carbon atoms.
10. The lubricating oil composition according to claim 9, wherein the amine-based antioxidant (B-2) is at least one selected from the group consisting of monoalkyl diphenyl amine-based antioxidants, dialkyl diphenyl amine-based antioxidants, polyalkyl diphenyl amine-based antioxidants, naphthylamine-based antioxidants, alkyl-substituted phenyl- α -naphthylamine, diphenylamine, monobutylphenyl monooctylphenylamine, N-p-tert-octylphenyl-1-naphthylamine and 4,4' -bis (α, α -dimethylbenzyl) diphenylamine.
11. The lubricating oil composition according to claim 7, wherein the antioxidant (B) is a combination of (B-1) which is pentaerythritol tetrakis [3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] or octadecyl 3- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, and (B-2) which is monobutylphenylmonooctylphenylamine or N-p-tert-octylphenyl-1-naphthylamine.
12. The lubricating oil composition according to claim 1 or 2, wherein the content of the antioxidant (B) is 0.5 mass% or more and 3.0 mass% or less based on the total amount of the lubricating oil composition.
13. The lubricating oil composition according to claim 1 or 2, wherein the mass ratio [ (B-2)/(B-1) ] of the phenolic antioxidant (B-1) to the amine antioxidant (B-2) is 1/3 to 3/1.
14. The lubricating oil composition according to claim 1 or 2, wherein the total content of the phenolic antioxidant (B-1) and the amine antioxidant (B-2) in the antioxidant (B) is 60 mass% or more and 100 mass% or less based on the total amount of the antioxidants (B).
15. The lubricating oil composition according to claim 1 or 2, wherein the antioxidant (B) further comprises a molybdenum amine complex-based antioxidant.
16. The lubricating oil composition according to claim 1 or 2, wherein the alkaline earth metal-based detergent (C) is at least 1 selected from an alkaline earth metal sulfonate, an alkaline earth metal phenate, and an alkaline earth metal salicylate.
17. The lubricating oil composition according to claim 16, wherein the alkaline earth metal sulfonate is an alkaline earth metal salt of an alkylaromatic sulfonic acid obtained by sulfonating an alkylaromatic compound having a molecular weight of 300 to 1500.
18. The lubricating oil composition of claim 16, wherein the alkaline earth metal phenate is an alkaline earth metal salt of a mannich reactant of an alkylphenol, an alkylphenol sulfide, or an alkylphenol.
19. The lubricating oil composition of claim 16, wherein the alkaline earth metal salicylate is an alkaline earth metal salt of an alkyl salicylic acid.
20. The lubricating oil composition according to claim 1 or 2, wherein the number of carbon atoms in the alkyl group constituting the alkaline earth metal detergent (C) is 4 to 30.
21. The lubricating oil composition according to claim 1 or 2, wherein the alkaline earth metal salt is any one of neutral, basic and overbased.
22. The lubricating oil composition according to claim 1 or 2, wherein the metal content of the alkaline earth metal-based detergent (C) is 1.0 to 20 mass%.
23. The lubricating oil composition according to claim 1 or 2, wherein the metal ratio of the alkaline earth metal-based detergent (C) is 20 or less.
24. The lubricating oil composition according to claim 1 or 2, wherein the alkaline earth metal-based detergent (C) is an alkaline earth metal salt having a base number of 10mgKOH/g or more and 500mgKOH/g or less.
25. The lubricating oil composition according to claim 24, wherein the alkaline earth metal-based detergent (C) is an alkaline earth metal salt having a base number of 150mgKOH/g or more and 450mgKOH/g or less.
26. The lubricating oil composition according to claim 1 or 2, wherein the alkaline earth metal atom of the alkaline earth metal-based detergent (C) is at least one selected from a beryllium atom, a magnesium atom, a calcium atom, a strontium atom and a barium atom.
27. The lubricating oil composition according to claim 26, wherein the alkaline earth metal atom of the alkaline earth metal-based detergent (C) is a calcium atom or a magnesium atom.
28. The lubricating oil composition according to claim 1 or 2, wherein the alkaline earth metal-based detergent (C) is a calcium sulfonate.
29. The lubricating oil composition according to claim 1 or 2, further comprising a polymer (D) having a mass average molecular weight of more than 5000.
30. The lubricating oil composition according to claim 29, wherein the content of the polymer (D) is less than 50 parts by mass relative to 100 parts by mass of the olefin oligomer (a).
31. The lubricating oil composition according to claim 29, wherein the mass average molecular weight of the polymer (D) is 120,000 or less.
32. The lubricating oil composition according to claim 1 or 2, further comprising zinc dithiophosphate (E).
33. The lubricating oil composition according to claim 32, wherein the zinc dithiophosphate (E) is represented by the following general formula (E-1),
in the above general formula (E-1), R4~R7Each independently represents a group selected from a linear, branched or cyclic alkyl group having 1 to 24 carbon atoms and a linear, branched or cyclic alkenyl group having 1 to 24 carbon atoms.
34. The lubricating oil composition according to claim 33, wherein in the general formula (E-1), R4~R7Is straight chain.
35. The lubricating oil composition according to claim 33, wherein in the general formula (E-1), R4~R7Is an alkyl group.
36. The lubricating oil composition of claim 33, wherein R4~R7The alkyl group in (1) is selected from the group consisting of straight-chain, branched-chain or cyclic methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl, heneicosyl, docosyl, tricosyl and tetracosylAt least one of the groups.
37. The lubricating oil composition of claim 33, wherein R4~R7The alkenyl group in (b) is at least one selected from the group consisting of a straight-chain, branched or cyclic vinyl group, propenyl group, butenyl group, pentenyl group, hexenyl group, heptenyl group, octenyl group, nonenyl group, decenyl group, undecenyl group, dodecenyl group, tridecenyl group, tetradecenyl group, pentadecenyl group, hexadecenyl group, heptadecenyl group, octadecenyl group, nonadecenyl group, eicosenyl group, heneicosenyl group, docosenyl group, tricosenyl group and tetracosenyl group.
38. The lubricating oil composition according to claim 32, wherein the content of the zinc dithiophosphate (E) is 0.05 mass% or more and 5 mass% or less based on the total amount of the lubricating oil composition.
39. The lubricating oil composition according to claim 1 or 2, wherein the base oil is one or more of a mineral oil and a synthetic oil.
40. The lubricating oil composition of claim 39, wherein the mineral oil is a mineral oil classified as group 2 or group 3 in the American Petroleum institute's base oil category.
41. The lubricating oil composition according to claim 39, wherein the synthetic oil is at least one selected from the group consisting of esters, ethers, polyalkylene glycols, alkylbenzenes, alkylnaphthalenes, and synthetic oils obtained by isomerizing waxes produced by the Fischer-Tropsch process.
42. Lubricating oil composition according to claim 1 or 2, wherein the kinematic viscosity of the base oil at 100 ℃ is 2.0mm2More than s and 30mm2The ratio of the water to the water is less than s.
43. The lubricating oil composition according to claim 1 or 2, wherein the base oil has a viscosity index of 80 or more.
44. The lubricating oil composition according to claim 1 or 2, wherein the content of the base oil is 75% by mass or more based on the total amount of the lubricating oil composition.
45. The lubricating oil composition according to claim 1 or 2, wherein the content of the base oil is 97% by mass or less based on the total amount of the lubricating oil composition.
46. The lubricating oil composition according to claim 1 or 2, further comprising one or more additives selected from a friction modifier, a dispersant and an antifoaming agent.
47. The lubricating oil composition according to claim 46, wherein the content of the additive is 10% by mass or less based on the total amount of the lubricating oil composition.
48. The lubricating oil composition according to claim 1 or 2, which is used for transmissions.
49. A transmission filled with the lubricating oil composition of any one of claims 1 to 47.
50. A lubricating method, wherein the lubricating oil composition according to any one of claims 1 to 47 is used.
51. A method of using the lubricating oil composition of any one of claims 1 to 47 in a transmission.
52. A method for producing a lubricating oil composition, wherein: an olefin oligomer (A) having a mass-average molecular weight of 500 to 5000, an antioxidant (B) comprising a phenol antioxidant (B-1) and an amine antioxidant (B-2), and an alkaline earth metal detergent (C), wherein the alkaline earth metal detergent (C) is blended so that the content thereof in terms of alkaline earth metal atoms is 1700 ppm by mass or more and 2700 ppm by mass or less, based on the total amount of the lubricating oil composition.
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| JP2016042777 | 2016-03-04 | ||
| JP2016-042777 | 2016-03-04 | ||
| PCT/JP2017/008496 WO2017150707A1 (en) | 2016-03-04 | 2017-03-03 | Lubricating oil composition |
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| CN108699484B true CN108699484B (en) | 2022-01-11 |
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| EP (1) | EP3425032B1 (en) |
| JP (1) | JP6913075B2 (en) |
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| US20190127656A1 (en) * | 2017-10-31 | 2019-05-02 | Exxonmobil Research And Engineering Company | Lubricant compositions comprising polymeric diphenylamine antioxidants |
| US20190144776A1 (en) * | 2017-10-31 | 2019-05-16 | Exxonmobil Research And Engineering Company | Lubricant grease compositions comprising polymeric diphenylamine antioxidants |
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| JP2014025004A (en) * | 2012-07-27 | 2014-02-06 | Jx Nippon Oil & Energy Corp | Lubricant composition |
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| US5756429A (en) * | 1993-10-06 | 1998-05-26 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition for high-speed gear |
| EP1950277B1 (en) * | 2005-11-15 | 2015-08-05 | Idemitsu Kosan Co., Ltd. | Transmission fluid composition |
| JP5350583B2 (en) * | 2006-08-03 | 2013-11-27 | 出光興産株式会社 | Lubricating oil composition and method for improving metal fatigue of automobile transmission using the same |
| US20080182767A1 (en) * | 2007-01-29 | 2008-07-31 | Loper John T | Compounds and Lubricating Compositions Containing the Compounds |
| JP2010047747A (en) * | 2008-07-22 | 2010-03-04 | Sanyo Chem Ind Ltd | Lubricant additive and lubricant composition |
| JP5683914B2 (en) * | 2010-11-18 | 2015-03-11 | 出光興産株式会社 | Lubricating oil composition |
| US8796189B2 (en) * | 2011-10-14 | 2014-08-05 | Chevron U.S.A. Inc. | Gear lubricant |
| US20180051228A1 (en) * | 2015-03-31 | 2018-02-22 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition for four stroke engine |
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- 2017-03-03 CN CN201780014896.0A patent/CN108699484B/en not_active Expired - Fee Related
- 2017-03-03 JP JP2018503419A patent/JP6913075B2/en active Active
- 2017-03-03 EP EP17760169.7A patent/EP3425032B1/en not_active Not-in-force
- 2017-03-03 WO PCT/JP2017/008496 patent/WO2017150707A1/en active Application Filing
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| EP0341574A1 (en) * | 1988-05-13 | 1989-11-15 | Idemitsu Kosan Company Limited | Lubricating oil composition |
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| WO2004069967A1 (en) * | 2003-02-07 | 2004-08-19 | Nippon Oil Corporation | Lubricating oil composition for transmission |
| CN101087869A (en) * | 2004-12-22 | 2007-12-12 | 出光兴产株式会社 | Lubricating oil composition for internal combustion engine |
| JP2015502446A (en) * | 2011-12-22 | 2015-01-22 | 昭和シェル石油株式会社 | Lubricating composition |
| JP2014025004A (en) * | 2012-07-27 | 2014-02-06 | Jx Nippon Oil & Energy Corp | Lubricant composition |
| JP2014025003A (en) * | 2012-07-27 | 2014-02-06 | Jx Nippon Oil & Energy Corp | Lubricant composition |
| WO2014136973A1 (en) * | 2013-03-08 | 2014-09-12 | 出光興産株式会社 | Lubricating-oil composition |
| CN104371797A (en) * | 2013-08-15 | 2015-02-25 | 英菲诺姆国际有限公司 | Transmission fluid compositions for improved energy efficiency |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6913075B2 (en) | 2021-08-04 |
| EP3425032A1 (en) | 2019-01-09 |
| CN108699484A (en) | 2018-10-23 |
| JPWO2017150707A1 (en) | 2018-12-27 |
| WO2017150707A1 (en) | 2017-09-08 |
| EP3425032A4 (en) | 2019-08-07 |
| EP3425032B1 (en) | 2021-01-27 |
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