JP7482851B2 - 変速機用潤滑油組成物 - Google Patents
変速機用潤滑油組成物 Download PDFInfo
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- JP7482851B2 JP7482851B2 JP2021502159A JP2021502159A JP7482851B2 JP 7482851 B2 JP7482851 B2 JP 7482851B2 JP 2021502159 A JP2021502159 A JP 2021502159A JP 2021502159 A JP2021502159 A JP 2021502159A JP 7482851 B2 JP7482851 B2 JP 7482851B2
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- lubricating oil
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- oil composition
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- 239000000203 mixture Substances 0.000 title claims description 130
- 239000010687 lubricating oil Substances 0.000 title claims description 111
- 230000005540 biological transmission Effects 0.000 title claims description 19
- 239000002199 base oil Substances 0.000 claims description 136
- 239000000178 monomer Substances 0.000 claims description 126
- 125000000217 alkyl group Chemical group 0.000 claims description 113
- 125000004432 carbon atom Chemical group C* 0.000 claims description 69
- -1 α,β-unsaturated dicarboxylic acid diester Chemical class 0.000 claims description 50
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims description 41
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 36
- 229920000193 polymethacrylate Polymers 0.000 claims description 33
- 230000001050 lubricating effect Effects 0.000 claims description 29
- 239000008186 active pharmaceutical agent Substances 0.000 claims description 27
- 239000011575 calcium Substances 0.000 claims description 27
- 150000001336 alkenes Chemical class 0.000 claims description 23
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 21
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 18
- 229960002317 succinimide Drugs 0.000 claims description 18
- 150000001412 amines Chemical class 0.000 claims description 16
- 239000004711 α-olefin Substances 0.000 claims description 16
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 14
- 229910052791 calcium Inorganic materials 0.000 claims description 14
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 14
- 150000001252 acrylic acid derivatives Chemical class 0.000 claims description 13
- 239000000654 additive Substances 0.000 claims description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 11
- 239000003607 modifier Substances 0.000 claims description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims description 11
- 239000011574 phosphorus Substances 0.000 claims description 11
- 239000003599 detergent Substances 0.000 claims description 10
- 239000002270 dispersing agent Substances 0.000 claims description 9
- 230000000996 additive effect Effects 0.000 claims description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 description 54
- 229920000642 polymer Polymers 0.000 description 43
- 150000001875 compounds Chemical class 0.000 description 29
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 25
- 229910052717 sulfur Inorganic materials 0.000 description 25
- 239000003921 oil Substances 0.000 description 24
- 230000035939 shock Effects 0.000 description 21
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 20
- 150000002430 hydrocarbons Chemical group 0.000 description 18
- 125000003342 alkenyl group Chemical group 0.000 description 17
- 125000004434 sulfur atom Chemical group 0.000 description 17
- 150000004996 alkyl benzenes Chemical class 0.000 description 16
- 238000012360 testing method Methods 0.000 description 15
- 125000003118 aryl group Chemical group 0.000 description 14
- 229920000768 polyamine Polymers 0.000 description 14
- 239000002480 mineral oil Substances 0.000 description 13
- 235000010446 mineral oil Nutrition 0.000 description 13
- 150000003839 salts Chemical class 0.000 description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 12
- 239000001257 hydrogen Substances 0.000 description 12
- 229910052739 hydrogen Inorganic materials 0.000 description 12
- 230000002265 prevention Effects 0.000 description 12
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 11
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 11
- 125000004430 oxygen atom Chemical group O* 0.000 description 11
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 10
- 239000011593 sulfur Substances 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 9
- 229920001577 copolymer Polymers 0.000 description 9
- 239000000446 fuel Substances 0.000 description 9
- 239000003963 antioxidant agent Substances 0.000 description 8
- 230000002708 enhancing effect Effects 0.000 description 8
- 239000003112 inhibitor Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 239000000523 sample Substances 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 6
- 230000002152 alkylating effect Effects 0.000 description 6
- 125000002947 alkylene group Chemical group 0.000 description 6
- 150000001721 carbon Chemical group 0.000 description 6
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 6
- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 5
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 description 5
- 125000002877 alkyl aryl group Chemical group 0.000 description 5
- 239000002585 base Substances 0.000 description 5
- 239000007859 condensation product Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000006078 metal deactivator Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 229940014800 succinic anhydride Drugs 0.000 description 5
- 239000001993 wax Substances 0.000 description 5
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N Propene Chemical compound CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 4
- 239000002518 antifoaming agent Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 125000000853 cresyl group Chemical group C1(=CC=C(C=C1)C)* 0.000 description 4
- 150000001990 dicarboxylic acid derivatives Chemical class 0.000 description 4
- 150000001991 dicarboxylic acids Chemical class 0.000 description 4
- 238000005227 gel permeation chromatography Methods 0.000 description 4
- 125000001183 hydrocarbyl group Chemical group 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 125000004433 nitrogen atom Chemical group N* 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 239000001384 succinic acid Substances 0.000 description 4
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 3
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 125000005037 alkyl phenyl group Chemical group 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- HNEGQIOMVPPMNR-IHWYPQMZSA-N citraconic acid Chemical compound OC(=O)C(/C)=C\C(O)=O HNEGQIOMVPPMNR-IHWYPQMZSA-N 0.000 description 3
- 229940018557 citraconic acid Drugs 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 3
- 150000005690 diesters Chemical class 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000001530 fumaric acid Substances 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 3
- 239000011976 maleic acid Substances 0.000 description 3
- HNEGQIOMVPPMNR-NSCUHMNNSA-N mesaconic acid Chemical compound OC(=O)C(/C)=C/C(O)=O HNEGQIOMVPPMNR-NSCUHMNNSA-N 0.000 description 3
- HNEGQIOMVPPMNR-UHFFFAOYSA-N methylfumaric acid Natural products OC(=O)C(C)=CC(O)=O HNEGQIOMVPPMNR-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 3
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 150000003460 sulfonic acids Chemical class 0.000 description 3
- ARCGXLSVLAOJQL-UHFFFAOYSA-N trimellitic acid Chemical class OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 2
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004342 Benzoyl peroxide Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 125000000738 acetamido group Chemical group [H]C([H])([H])C(=O)N([H])[*] 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 125000005233 alkylalcohol group Chemical group 0.000 description 2
- 238000005804 alkylation reaction Methods 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- 125000002490 anilino group Chemical group [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 125000000043 benzamido group Chemical group [H]N([*])C(=O)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 2
- 239000012964 benzotriazole Substances 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- IAQRGUVFOMOMEM-UHFFFAOYSA-N but-2-ene Chemical compound CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
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- 238000007334 copolymerization reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 125000004915 dibutylamino group Chemical group C(CCC)N(CCCC)* 0.000 description 2
- 125000001664 diethylamino group Chemical group [H]C([H])([H])C([H])([H])N(*)C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 2
- 125000004914 dipropylamino group Chemical group C(CC)N(CCC)* 0.000 description 2
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 2
- 239000007863 gel particle Substances 0.000 description 2
- 125000000623 heterocyclic group Chemical group 0.000 description 2
- 125000001841 imino group Chemical group [H]N=* 0.000 description 2
- 238000006317 isomerization reaction Methods 0.000 description 2
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- 238000005259 measurement Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 125000006384 methylpyridyl group Chemical group 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 125000004573 morpholin-4-yl group Chemical group N1(CCOCC1)* 0.000 description 2
- LSHROXHEILXKHM-UHFFFAOYSA-N n'-[2-[2-[2-(2-aminoethylamino)ethylamino]ethylamino]ethyl]ethane-1,2-diamine Chemical compound NCCNCCNCCNCCNCCN LSHROXHEILXKHM-UHFFFAOYSA-N 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 150000003018 phosphorus compounds Chemical class 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 125000000587 piperidin-1-yl group Chemical group [H]C1([H])N(*)C([H])([H])C([H])([H])C([H])([H])C1([H])[H] 0.000 description 2
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- 125000003373 pyrazinyl group Chemical group 0.000 description 2
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- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical compound OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 description 2
- 125000000719 pyrrolidinyl group Chemical group 0.000 description 2
- 125000004929 pyrrolidonyl group Chemical group N1(C(CCC1)=O)* 0.000 description 2
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- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 2
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- 238000013112 stability test Methods 0.000 description 2
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- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 2
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- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 2
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 description 2
- 229960001124 trientine Drugs 0.000 description 2
- XVOUMQNXTGKGMA-OWOJBTEDSA-N (E)-glutaconic acid Chemical compound OC(=O)C\C=C\C(O)=O XVOUMQNXTGKGMA-OWOJBTEDSA-N 0.000 description 1
- UUGXDEDGRPYWHG-UHFFFAOYSA-N (dimethylamino)methyl 2-methylprop-2-enoate Chemical compound CN(C)COC(=O)C(C)=C UUGXDEDGRPYWHG-UHFFFAOYSA-N 0.000 description 1
- OBDUMNZXAIUUTH-HWKANZROSA-N (e)-tetradec-2-ene Chemical group CCCCCCCCCCC\C=C\C OBDUMNZXAIUUTH-HWKANZROSA-N 0.000 description 1
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 description 1
- RAADJDWNEAXLBL-UHFFFAOYSA-N 1,2-di(nonyl)naphthalene Chemical compound C1=CC=CC2=C(CCCCCCCCC)C(CCCCCCCCC)=CC=C21 RAADJDWNEAXLBL-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- SJIXRGNQPBQWMK-UHFFFAOYSA-N 2-(diethylamino)ethyl 2-methylprop-2-enoate Chemical compound CCN(CC)CCOC(=O)C(C)=C SJIXRGNQPBQWMK-UHFFFAOYSA-N 0.000 description 1
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 description 1
- LLEFDCACDRGBKD-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;nonanoic acid Chemical compound CCC(CO)(CO)CO.CCCCCCCCC(O)=O LLEFDCACDRGBKD-UHFFFAOYSA-N 0.000 description 1
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- JYZIHLWOWKMNNX-UHFFFAOYSA-N benzimidazole Chemical compound C1=C[CH]C2=NC=NC2=C1 JYZIHLWOWKMNNX-UHFFFAOYSA-N 0.000 description 1
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- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
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- KPGRTCPQLMJHFQ-UHFFFAOYSA-N diethylaminomethyl 2-methylprop-2-enoate Chemical compound CCN(CC)COC(=O)C(C)=C KPGRTCPQLMJHFQ-UHFFFAOYSA-N 0.000 description 1
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- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- GBHRVZIGDIUCJB-UHFFFAOYSA-N hydrogenphosphite Chemical compound OP([O-])[O-] GBHRVZIGDIUCJB-UHFFFAOYSA-N 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
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- 239000007788 liquid Substances 0.000 description 1
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- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 125000002960 margaryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- RTWNYYOXLSILQN-UHFFFAOYSA-N methanediamine Chemical compound NCN RTWNYYOXLSILQN-UHFFFAOYSA-N 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 description 1
- RZRFZEDWURIJRY-UHFFFAOYSA-N morpholin-4-ylmethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCN1CCOCC1 RZRFZEDWURIJRY-UHFFFAOYSA-N 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
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- 239000002736 nonionic surfactant Substances 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- BBZAGOMQOSEWBH-UHFFFAOYSA-N octyl dodecanoate Chemical compound CCCCCCCCCCCC(=O)OCCCCCCCC BBZAGOMQOSEWBH-UHFFFAOYSA-N 0.000 description 1
- 235000014593 oils and fats Nutrition 0.000 description 1
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- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 239000012169 petroleum derived wax Substances 0.000 description 1
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- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- ZXRDVSMSMOZCPT-UHFFFAOYSA-N phosphorodithious acid Chemical class OP(S)S ZXRDVSMSMOZCPT-UHFFFAOYSA-N 0.000 description 1
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- 229920005862 polyol Polymers 0.000 description 1
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- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- AOHJOMMDDJHIJH-UHFFFAOYSA-N propylenediamine Chemical compound CC(N)CN AOHJOMMDDJHIJH-UHFFFAOYSA-N 0.000 description 1
- KIDHWZJUCRJVML-UHFFFAOYSA-N putrescine Chemical compound NCCCCN KIDHWZJUCRJVML-UHFFFAOYSA-N 0.000 description 1
- 229940083082 pyrimidine derivative acting on arteriolar smooth muscle Drugs 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
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- 229910052708 sodium Inorganic materials 0.000 description 1
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- 238000000638 solvent extraction Methods 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Inorganic materials O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 1
- HIFJUMGIHIZEPX-UHFFFAOYSA-N sulfuric acid;sulfur trioxide Chemical compound O=S(=O)=O.OS(O)(=O)=O HIFJUMGIHIZEPX-UHFFFAOYSA-N 0.000 description 1
- 238000003419 tautomerization reaction Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
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
- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
- C10M145/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M145/10—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate
- C10M145/12—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate monocarboxylic
- C10M145/14—Acrylate; Methacrylate
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/30—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms containing a nitrogen-to-oxygen bond
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/38—Heterocyclic nitrogen compounds
- C10M133/44—Five-membered ring containing nitrogen and carbon only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/08—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium containing a sulfur-to-oxygen bond
- C10M135/10—Sulfonic acids or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
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Description
[1] (A)鉱油系基油および/または合成系基油を含んでなる潤滑油基油と、
(B)重量平均分子量25,000以下のポリ(メタ)アクリレートとを含有し、
100℃における動粘度が2.5~4.9mm2/sであることを特徴とする、変速機用潤滑油組成物。
前記(B2)成分の含有量が、組成物全量基準で0.2質量%以上であり、
それぞれの前記ポリアルキル(メタ)アクリレート(B2)は、炭素数8~18の直鎖または分岐鎖アルキル基を有する1種以上のアルキル(メタ)アクリレート単量体単位(B2a)を、単量体単位全量基準で70mol%以上含み、
それぞれの前記ポリアルキル(メタ)アクリレート(B2)は、メチル(メタ)アクリレート単量体単位(B2c)を、単量体単位全量基準で3mol%未満含有するか又は含有しない、[1]~[8]のいずれかに記載の潤滑油組成物。
(E)コハク酸イミド無灰分散剤を、組成物全量基準で0.2~8質量%とをさらに含む、[1]~[14]のいずれかに記載の潤滑油組成物。
[GPC測定条件]
装置:Waters Corporation製 ACQUITY(登録商標) APC UV RIシステム
カラム:上流側から順に、Waters Corporation製 ACQUITY(登録商標) APC XT125A(ゲル粒径2.5μm、カラムサイズ(内径×長さ)4.6mm×150mm)1本、及び、Waters Corporation製 ACQUITY(登録商標) APC XT45A(ゲル粒径1.7μm、カラムサイズ(内径×長さ)4.6mm×150mm)2本を直列に接続
カラム温度:40℃
試料溶液:試料濃度1.0質量%のテトラヒドロフラン溶液
溶液注入量:20.0μL
検出装置:示差屈折率検出器
基準物質:標準ポリスチレン(Agilent Technologies社製Agilent EasiCal(登録商標) PS-1)10点(分子量:30230、9590、2970、890、786、682、578、474、370、266)
本発明の変速機用潤滑油組成物(以下において「変速機油」または「潤滑油組成物」ということがある。)において、潤滑油基油としては、鉱油系基油および合成系基油から選ばれる1種以上からなる基油を特に制限なく用いることができる。
本発明の潤滑油組成物は、重量平均分子量25,000以下のポリ(メタ)アクリレート(以下において「(B)成分」ということがある。)を含有する。なお本明細書において、「(メタ)アクリレート」とは、「アクリレート及び/又はメタクリレート」を意味する。(B)成分としてポリ(メタ)アクリレートを用いることにより、同一の重量平均分子量を有する他のポリマーを用いた組成物よりも変速ショック防止性およびベアリング疲労寿命を高めることが可能になる。
一の実施形態において、潤滑油組成物は、カルシウムスルホネート清浄剤(以下において「(C)成分」ということがある。)をさらに含み得る。(C)成分としては1種を単独で用いてもよく、2種以上を組み合わせて用いてもよい。
アルキル芳香族スルホン酸の例としては、いわゆる石油スルホン酸や合成スルホン酸が挙げられる。ここでいう石油スルホン酸の例としては、鉱油の潤滑油留分のアルキル芳香族化合物をスルホン化したものや、ホワイトオイル製造時に副生する、いわゆるマホガニー酸等が挙げられる。また、合成スルホン酸の一例としては、洗剤の原料となるアルキルベンゼン製造プラントにおける副生成物を回収すること、もしくは、ベンゼンをポリオレフィンでアルキル化することにより得られる、直鎖状または分枝状のアルキル基を有するアルキルベンゼンをスルホン化したものを挙げることができる。合成スルホン酸の他の一例としては、ジノニルナフタレン等のアルキルナフタレンをスルホン化したものを挙げることができる。また、これらアルキル芳香族化合物をスルホン化する際のスルホン化剤としては、特に制限はなく、例えば発煙硫酸や無水硫酸を用いることができる。
一の好ましい実施形態において、潤滑油組成物は、リン含有添加剤(以下において「(D)成分」ということがある。)を含有し得る。(D)成分は1種を単独で用いてもよく、2種以上を組み合わせて用いてもよい。
上記一般式(10)で表される化合物の好ましい例としては、上記一般式(10)においてX4~X7のうち2つが硫黄原子、残り2つが酸素原子であり、R16~R18がそれぞれ独立に硫黄原子を含んでいてもよい炭素数3~18(好ましくは4~12)のアルキル基、アリール基(例えばフェニル基等。)、又はアルキルアリール基(例えばクレジル基等。)であるジチオホスフェート化合物を挙げることができる。
これらの化合物は、1種を単独で用いてもよく、2種以上を組み合わせて用いてもよい。
一の好ましい実施形態において、潤滑油組成物は、コハク酸イミド無灰分散剤(以下において「(E)成分」ということがある。)をさらに含み得る。
式(13)及び式(14)におけるアルキル基またはアルケニル基(R24~R26)の好適な数平均分子量は800~3500、より好ましくは1000~3500である。
一の実施形態において、クラッチトルク容量をさらに高める観点から、潤滑油組成物は、(F)アミン系摩擦調整剤(以下において「(F)成分」ということがある。)を実質的に含有しないことが好ましい。本明細書において、「アミン系摩擦調整剤を実質的に含有しない」とは、潤滑油においてアミン系摩擦調整剤として用いられる成分を全く含有していないか、又はその影響が無視できる程度に含有量が微量であることを意味する。潤滑油においてアミン系摩擦調整剤として用いられる成分とは、炭素数9~50のアルキル又はアルケニル基を少なくとも1個と、脂肪族炭素に結合した第1級または第2級アミノ基を少なくとも1個とを分子中に有するアミン化合物である。このようなアミン化合物は、アミン系摩擦調整剤として知られている。アミン系摩擦調整剤は、第1級アミンのアルキレンオキサイド付加物であってもよい。第1級アミンのアルキレンオキサイド付加物は官能基として第2級アミノ基およびヒドロキシ基を有する。より具体的には、潤滑油組成物中のアミン系摩擦調整剤の含有量は、好ましくは0~50質量ppm、より好ましくは0~20質量ppm、さらに好ましくは0~10質量ppm、特に好ましくは0~5質量ppmであり、一の実施形態において0~50質量ppmであり得る。
一の実施形態において、潤滑油組成物は、(D)成分以外の摩耗防止剤または極圧剤、酸化防止剤、(B)成分以外の流動点降下剤、腐食防止剤、防錆剤、金属不活性化剤、消泡剤、抗乳化剤、および着色剤から選ばれる1種以上の添加剤をさらに含み得る。
潤滑油組成物の100℃における動粘度は、潤滑箇所における油膜の形成を十分にして耐摩耗性を高める観点から、2.5mm2/s以上、好ましくは2.7mm2/s以上、一の実施形態において2.9mm2/s以上であり、また省燃費性を高める観点から4.9mm2/s以下、好ましくは4.4mm2/s以下、より好ましくは3.9mm2/s以下、一の実施形態において3.7mm2/s以下であり、一の実施形態において2.5~4.9mm2/sであり得る。
本発明の潤滑油組成物は、自動車用の自動変速機油として好ましく用いることができ、湿式多板クラッチ等の湿式クラッチを有する変速機の潤滑に特に好ましく用いることができる。
表1~6に示されるように、本発明の潤滑油組成物(実施例)、及び比較用の潤滑油組成物(比較例)をそれぞれ調製した。表中、「基油組成」の項目における「mass%」は基油全量を基準(100質量%)とする質量%を意味し、他の項目における「mass%」は組成物全量を基準(100質量%)とする質量%を意味する。また表中、「mass ppm/Ca」は、組成物全量を基準とするカルシウム量としての質量ppmを意味し、「mass ppm/P」は、組成物全量を基準とするリン量としての質量ppmを意味する。成分の詳細は次の通りである。
A-1:APIグループIII基油、動粘度(100℃):2.7mm2/s、動粘度(40℃):9.6mm2/s、粘度指数:125、硫黄分:1質量ppm未満、%CP:92.2、%CN:7.8、%CA:0
A-2:APIグループII基油、動粘度(100℃):3.1mm2/s、動粘度(40℃):12.7mm2/s、粘度指数:105、硫黄分:1質量ppm未満、%CP:70.8、%CN:29.2、%CA:0
A-3:APIグループI基油、動粘度(100℃):2.1mm2/s、動粘度(40℃):6.87mm2/s、粘度指数:96、硫黄分:0.15質量%、%CP:63、%CN:31、%CA:6
A-4:APIグループIV基油(INEOS社製DURASYN(登録商標)162)、動粘度(100℃):1.78mm2/s、動粘度(40℃):5.40mm2/s
A-5:APIグループV基油(アゼライン酸ビス(2-エチルヘキシル))、動粘度(100℃):2.9mm2/s、動粘度(40℃):10.3mm2/s
B-1:非分散型ポリアルキルメタクリレート、重量平均分子量:12,000、側鎖アルキル基(一般式(1)中のR2):分岐鎖アルキル基および直鎖アルキル基、側鎖アルキル基の炭素数:C12~15
B-2:非分散型ポリアルキルメタクリレート、重量平均分子量:20,000、側鎖アルキル基(一般式(1)中のR2):C1(メチル基)(60mol%)、直鎖C12~16アルキル基(20mol%)、分岐鎖C22アルキル基(20mol%)の組み合わせ
B-3:非分散型ポリアルキルメタクリレート、重量平均分子量:20,000、側鎖アルキル基(一般式(1)中のR2):C1(メチル基)(45mol%)、直鎖C12~15アルキル基(55mol%)の組み合わせ
B*-4:非分散型ポリアルキルメタクリレート、重量平均分子量:35,000、側鎖アルキル基(一般式(1)中のR2):分岐鎖アルキル基および直鎖アルキル基、側鎖アルキル基の炭素数:C1、C12~16、C18、C22の組み合わせ
B*-5:エチレンプロピレンコポリマー、重量平均分子量:13,000
B-6:非分散型ポリアルキルメタクリレート、重量平均分子量:8,000、側鎖アルキル基(一般式(1)中のR2):分岐鎖C6(2-メチルペンチル基)(15mol%)、分岐鎖C8(2-エチルヘキシル基)(5mol%)、直鎖C12~15アルキル基(45mol%)、分岐鎖C12~15アルキル基(35mol%)
B-7:非分散型ポリアルキルメタクリレート、重量平均分子量:5,000、側鎖アルキル基(一般式(1)中のR2):分岐鎖アルキル基および直鎖アルキル基、側鎖アルキル基の炭素数:C12~15
B-8:非分散型ポリアルキルメタクリレート、重量平均分子量:8,000、側鎖アルキル基(一般式(1)中のR2):分岐鎖C8アルキル基
B-9:非分散型ポリアルキルメタクリレート、重量平均分子量:8,000、側鎖アルキル基(一般式(1)中のR2):直鎖C18アルキル基
C-1:イソブテンオリゴマー(4~7量体)でベンゼンをアルキル化することにより得られるアルキルベンゼンをスルホン化することにより得られるアルキルベンゼンスルホン酸のCa塩の過塩基性塩であるCaスルホネート(一般式(7)及び(8)においてR10がイソブテンオリゴマーの一方の主鎖末端を含む分岐鎖アルキル基(-CH2-(C(CH3)2-CH2)n-1-H基、nはイソブテンオリゴマーの重合度)であり、R11及びR12がともにメチル基であるアルキルベンゼンスルホン酸のCa塩の過塩基性塩であるCaスルホネートと、一般式(7)及び(8)においてR10がイソブテンオリゴマーの一方の主鎖末端を含む分岐鎖アルキル基(-(C(CH3)2-CH2)n-1-H基、nはイソブテンオリゴマーの重合度)であり、R11がイソブテンオリゴマーの他方の主鎖末端を含む分岐鎖アルキル基(イソプロピル基)であり、R12が水素原子であるアルキルベンゼンスルホン酸のCa塩の過塩基性塩であるCaスルホネートとの混合物)、塩基価300mgKOH/g、Ca:10質量%
C-2:直鎖α-オレフィン(C20~C26)でベンゼンをアルキル化することにより得られるアルキルベンゼンをスルホン化することにより得られるアルキルベンゼンスルホン酸のCa塩の過塩基性塩であるCaスルホネート(一般式(5)及び(6)において、R7が直鎖α-オレフィンの1-位の炭素を含む炭素数1~4の直鎖アルキル基であり、R8が直鎖α-オレフィンのω-位の炭素を含む直鎖アルキル基であるアルキルベンゼンスルホン酸のCa塩の過塩基性塩であるCaスルホネートの混合物)、塩基価300mgKOH/g、Ca:12質量%
D-1:トリオクチルジチオホスフェート(一般式(10)においてX4~X7のうち2つが酸素原子、残り2つが硫黄原子、R16~R18がオクチル基)、P:6.6質量%
D-2:ビス(3-チアウンデシル)ハイドロジェンホスファイト(一般式(9)においてX1~X3が酸素原子、R13及びR14が3-チアウンデシル基、R15が水素)、P:7.3質量%
D-3:ジブチルハイドロジェンホスファイト(一般式(9)においてX1~X3が酸素原子、R13及びR14がブチル基、R15が水素)、P:15.9質量%
E-1:アルケニルコハク酸イミド無灰分散剤、アルケニル基の数平均分子量:3000、N:1.6質量%
E-2:ホウ素変性アルケニルコハク酸イミド分散剤、アルケニル基の数平均分子量:3000、N:1.6質量%、B:0.6質量%
F-1:オレイルアミン-エチレンオキサイド付加物
潤滑油組成物のそれぞれについて、SAE No.2試験機(神鋼造機製)を用い、JASO M348:2002に準拠して動摩擦試験を行った。2500サイクル後のフリクションプレート(NW461E材)とスチールプレートとの間の動摩擦係数μd及びμ0を測定し、変速ショック指数μ0/μdを算出した。
結果を表1~6に示している。本試験で測定されたμd及びμ0より算出された変速ショック指数μ0/μdが小さいほど、変速ショック防止性が良好であることを意味する。
潤滑油組成物のそれぞれについて、ユニスチール転がり疲労試験機(株式会社東京試験機製3連式高温転がり疲れ試験機TRF-1000/3-01H)を用いて、ユニスチール試験(イギリス石油学会法:IP305/79)によりスラストベアリングの転がり疲労寿命を測定した。スラストニードルベアリング(NSK製FNTA-2542C)の片側の軌道輪を平坦な試験片(材質:SUJ2)で置き換えてなる試験軸受について、荷重4000N、面圧1.5GPa、回転数1500rpm、油温120℃の条件下で、ころ又は試験片のいずれかが疲労損傷するまでの時間を測定した。なお、ユニスチール転がり疲労試験機に備えられた振動加速度計により測定される試験部の振動加速度が0.5m/s2に達したとき、疲労損傷が発生したと判断した。10回の繰り返し試験における疲労損傷までの時間から、ワイブルプロットにより疲労寿命を50%寿命(L50:累積確率が50%になる時間)として算出した。結果を表1~6に示している。本試験で測定されたベアリング疲労寿命L50が長いほど、ベアリングの疲労寿命をより改善できることを意味する。
潤滑油組成物のそれぞれについて、ベーンポンプの摩耗を評価した。ベーンポンプ(Eaton Corporation製Vickers(登録商標)ベーンポンプV104C)を用いて、回転数1200rpm、吐出圧力3.0MPaの条件でタンク内の試料油(30L、油温80℃)をポンピングすることにより試料油を循環させる運転を100時間行い、運転後のベーンポンプの摩耗量(mg)を測定した。さらに、運転後の試料油の動粘度(100℃)の低下率(%)を測定した。本試験で測定されたベーンポンプの摩耗量が少ないほど、ベーンポンプの摩耗をより低減できることを意味する。また運転後の試料油に動粘度の低下が観察されないことは、ベーンポンプにおいて潤滑油が受けるせん断がベーンポンプの摩耗に関与しないことを意味する。
(せん断安定性試験)
潤滑油組成物のそれぞれについて、JPI-5S-29-88に準拠したせん断安定度試験により、潤滑油組成物のせん断安定性を評価した。試料油に振動子から周波数10kHz、振動子の振れ幅28μmの超音波を2時間照射し、超音波照射後の試料油の100℃における動粘度の、超音波照射前の試料油の100℃における動粘度に対する低下率(%)を算出した。結果を表1~6に示している。動粘度の低下率が低いほど、せん断安定性が高く耐久性が良好であることを意味する。本試験において動粘度(100℃)の低下率は4.5%以下であることが好ましい。
実施例の潤滑油組成物は、変速ショック指数、ならびにベアリング疲労寿命L50のいずれにおいても良好な結果を示した。
(B)成分(ポリ(メタ)アクリレート)を含有しない比較例1の組成物は、変速ショック指数およびベアリング疲労寿命L50、ならびにベーンポンプの摩耗において劣った結果を示した。
(B)成分(ポリ(メタ)アクリレート)の重量平均分子量が25,000を超える比較例2の組成物は、変速ショック指数およびベアリング疲労寿命L50、ならびにベーンポンプの摩耗において劣った結果を示した。
(B)成分としてポリ(メタ)アクリレートに代えてエチレンプロピレンコポリマー(重量平均分子量:13,000)を含有する比較例3の組成物は、変速ショック指数およびベアリング疲労寿命L50、ならびにベーンポンプの摩耗において劣った結果を示した。
Claims (10)
- (A)全基油に対して50質量%より多くのAPIグループIII基油を含み、鉱油系基油および/または合成系基油を含んでなる潤滑油基油と、
(B)重量平均分子量が8,000~12,000であり、分岐鎖アルキル基を側鎖に有し、潤滑油組成物全量基準で1~5質量%であるポリ(メタ)アクリレートとを含有し、
100℃における動粘度が2.5~4.9mm2/sであることを特徴とする、
変速機用潤滑油組成物。 - 前記(A)成分の100℃における動粘度が2.0~3.8mm2/sである、請求項1に記載の潤滑油組成物。
- 前記(A)成分の%CAが1.0以下である、請求項1又は2に記載の潤滑油組成物。
- 前記(B)成分が非分散型ポリ(メタ)アクリレートである、請求項1~3のいずれかに記載の潤滑油組成物。
- (C)カルシウムスルホネート清浄剤をさらに含有する、請求項1~4のいずれかに記載の潤滑油組成物。
- 前記(C)成分が、炭素数3以上のオレフィンのオリゴマーから誘導されたアルキル基を有するカルシウムスルホネート清浄剤である、請求項5に記載の潤滑油組成物。
- 前記(B)成分が、それぞれ8,000~12,000の重量平均分子量を有する、1種以上のポリアルキル(メタ)アクリレート(B2)であり、
前記(B2)成分の含有量が、組成物全量基準で1質量%以上であり、それぞれの前記ポリアルキル(メタ)アクリレート(B2)は、炭素数8~18の分岐鎖アルキル基を有する1種以上のアルキル(メタ)アクリレート単量体単位(B2a)を、単量体単位全量基準で70mol%以上含み、
それぞれの前記ポリアルキル(メタ)アクリレート(B2)は、メチル(メタ)アクリレート単量体単位(B2c)を、単量体単位全量基準で3mol%未満含有するか又は含有しない、請求項1~6のいずれかに記載の潤滑油組成物。 - それぞれの前記ポリアルキル(メタ)アクリレート(B2)は、炭素数2~18のα-オレフィン、及び、α,β-不飽和ジカルボン酸ジエステルから選ばれる1種以上のコモノマーに対応する1種以上の単量体単位(B2h)を、単量体単位全量基準で10mol%未満含有するか又は含有しない、請求項7に記載の潤滑油組成物。
- (D)リン含有添加剤を、組成物全量基準でリン量として50~800質量ppmと、
(E)コハク酸イミド無灰分散剤を、組成物全量基準で0.2~8質量%とをさらに含む、請求項1~8のいずれかに記載の潤滑油組成物。 - (F)アミン系摩擦調整剤を潤滑油組成物全量基準で50質量ppm以下含有するか、又は含有しない、請求項1~9のいずれかに記載の潤滑油組成物。
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CN113454194A (zh) | 2021-09-28 |
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JPWO2020171188A1 (ja) | 2021-12-23 |
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