JP5337598B2 - Gear oil composition - Google Patents
Gear oil composition Download PDFInfo
- Publication number
- JP5337598B2 JP5337598B2 JP2009153632A JP2009153632A JP5337598B2 JP 5337598 B2 JP5337598 B2 JP 5337598B2 JP 2009153632 A JP2009153632 A JP 2009153632A JP 2009153632 A JP2009153632 A JP 2009153632A JP 5337598 B2 JP5337598 B2 JP 5337598B2
- Authority
- JP
- Japan
- Prior art keywords
- mass
- less
- compound
- group
- component
- 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.)
- Active
Links
- 239000000203 mixture Substances 0.000 title claims description 51
- 239000012208 gear oil Substances 0.000 title claims description 42
- -1 ester compound Chemical class 0.000 claims description 44
- 150000001875 compounds Chemical class 0.000 claims description 34
- 125000004432 carbon atom Chemical group C* 0.000 claims description 31
- 239000002199 base oil Substances 0.000 claims description 25
- 229910052717 sulfur Inorganic materials 0.000 claims description 22
- 239000002480 mineral oil Substances 0.000 claims description 21
- 235000010446 mineral oil Nutrition 0.000 claims description 20
- 229910052698 phosphorus Inorganic materials 0.000 claims description 20
- 150000002430 hydrocarbons Chemical group 0.000 claims description 18
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 15
- 239000004711 α-olefin Substances 0.000 claims description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 13
- 239000011574 phosphorus Substances 0.000 claims description 13
- 125000004434 sulfur atom Chemical group 0.000 claims description 13
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 12
- 239000011593 sulfur Substances 0.000 claims description 12
- 125000004437 phosphorous atom Chemical group 0.000 claims description 9
- 239000005078 molybdenum compound Substances 0.000 claims description 8
- 150000002752 molybdenum compounds Chemical class 0.000 claims description 8
- KHYKFSXXGRUKRE-UHFFFAOYSA-J molybdenum(4+) tetracarbamodithioate Chemical compound C(N)([S-])=S.[Mo+4].C(N)([S-])=S.C(N)([S-])=S.C(N)([S-])=S KHYKFSXXGRUKRE-UHFFFAOYSA-J 0.000 claims description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- XYRMLECORMNZEY-UHFFFAOYSA-B [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S Chemical compound [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S XYRMLECORMNZEY-UHFFFAOYSA-B 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 description 21
- 235000021317 phosphate Nutrition 0.000 description 21
- 239000010452 phosphate Substances 0.000 description 19
- 239000003921 oil Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 17
- 239000002253 acid Substances 0.000 description 15
- 239000000654 additive Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 15
- 238000002156 mixing Methods 0.000 description 15
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 15
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 230000000996 additive effect Effects 0.000 description 10
- 239000003963 antioxidant agent Substances 0.000 description 10
- 239000000446 fuel Substances 0.000 description 9
- 238000011282 treatment Methods 0.000 description 9
- 229920001577 copolymer Polymers 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 230000002378 acidificating effect Effects 0.000 description 7
- 238000005461 lubrication Methods 0.000 description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 6
- 239000010687 lubricating oil Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 5
- 125000003118 aryl group Chemical group 0.000 description 5
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 4
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 4
- 125000003342 alkenyl group Chemical group 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 230000003078 antioxidant effect Effects 0.000 description 4
- 125000003710 aryl alkyl group Chemical group 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 4
- 238000004821 distillation Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 4
- 229920000193 polymethacrylate Polymers 0.000 description 4
- 229920000098 polyolefin Polymers 0.000 description 4
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical class O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- ZUNFAOLVHKUWCL-UHFFFAOYSA-N dipropoxy-sulfanyl-sulfanylidene-$l^{5}-phosphane Chemical compound CCCOP(S)(=S)OCCC ZUNFAOLVHKUWCL-UHFFFAOYSA-N 0.000 description 3
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000006078 metal deactivator Substances 0.000 description 3
- AFFLGGQVNFXPEV-UHFFFAOYSA-N n-decene Natural products CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 3
- 125000001624 naphthyl group Chemical group 0.000 description 3
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 3
- GAJQCIFYLSXSEZ-UHFFFAOYSA-L tridecyl phosphate Chemical compound CCCCCCCCCCCCCOP([O-])([O-])=O GAJQCIFYLSXSEZ-UHFFFAOYSA-L 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- BKCNDTDWDGQHSD-UHFFFAOYSA-N 2-(tert-butyldisulfanyl)-2-methylpropane Chemical compound CC(C)(C)SSC(C)(C)C BKCNDTDWDGQHSD-UHFFFAOYSA-N 0.000 description 2
- NYLJHRUQFXQNPN-UHFFFAOYSA-N 2-(tert-butyltrisulfanyl)-2-methylpropane Chemical compound CC(C)(C)SSSC(C)(C)C NYLJHRUQFXQNPN-UHFFFAOYSA-N 0.000 description 2
- SZAQZZKNQILGPU-UHFFFAOYSA-N 2-[1-(2-hydroxy-3,5-dimethylphenyl)-2-methylpropyl]-4,6-dimethylphenol Chemical compound C=1C(C)=CC(C)=C(O)C=1C(C(C)C)C1=CC(C)=CC(C)=C1O SZAQZZKNQILGPU-UHFFFAOYSA-N 0.000 description 2
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 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 description 2
- 239000002585 base Substances 0.000 description 2
- 229910052728 basic metal Inorganic materials 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 150000003939 benzylamines Chemical class 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- GQDAQMBBGHMTQX-UHFFFAOYSA-N dihydroxy-propylsulfanyl-sulfanylidene-$l^{5}-phosphane Chemical compound CCCSP(O)(O)=S GQDAQMBBGHMTQX-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 150000004678 hydrides Chemical class 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- YDOLGQNXROBHNZ-UHFFFAOYSA-N hydroxy-diphenoxy-sulfanylidene-$l^{5}-phosphane Chemical compound C=1C=CC=CC=1OP(=S)(O)OC1=CC=CC=C1 YDOLGQNXROBHNZ-UHFFFAOYSA-N 0.000 description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 125000006178 methyl benzyl group Chemical group 0.000 description 2
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000002530 phenolic antioxidant Substances 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 229920001083 polybutene Polymers 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 2
- 229960001860 salicylate Drugs 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 description 2
- 125000003944 tolyl group Chemical group 0.000 description 2
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 description 2
- 125000005023 xylyl group Chemical group 0.000 description 2
- INKXYFUMUBZQKV-UHFFFAOYSA-N (2,3,4-triethylphenyl) dihydrogen phosphate Chemical compound CCC1=CC=C(OP(O)(O)=O)C(CC)=C1CC INKXYFUMUBZQKV-UHFFFAOYSA-N 0.000 description 1
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 1
- YHMYGUUIMTVXNW-UHFFFAOYSA-N 1,3-dihydrobenzimidazole-2-thione Chemical compound C1=CC=C2NC(S)=NC2=C1 YHMYGUUIMTVXNW-UHFFFAOYSA-N 0.000 description 1
- IHWDIGHWDQPQMQ-UHFFFAOYSA-N 1-octadecylsulfanyloctadecane Chemical compound CCCCCCCCCCCCCCCCCCSCCCCCCCCCCCCCCCCCC IHWDIGHWDQPQMQ-UHFFFAOYSA-N 0.000 description 1
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 description 1
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 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 description 1
- DKCPKDPYUFEZCP-UHFFFAOYSA-N 2,6-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O DKCPKDPYUFEZCP-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- QHPKIUDQDCWRKO-UHFFFAOYSA-N 2,6-ditert-butyl-4-[2-(3,5-ditert-butyl-4-hydroxyphenyl)propan-2-yl]phenol Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(C(C)(C)C=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 QHPKIUDQDCWRKO-UHFFFAOYSA-N 0.000 description 1
- GEHIXSKXGCIKJJ-UHFFFAOYSA-N 2-(chloromethyl)-5-(4-methoxyphenyl)-1,3,4-oxadiazole Chemical compound C1=CC(OC)=CC=C1C1=NN=C(CCl)O1 GEHIXSKXGCIKJJ-UHFFFAOYSA-N 0.000 description 1
- AKNMPWVTPUHKCG-UHFFFAOYSA-N 2-cyclohexyl-6-[(3-cyclohexyl-2-hydroxy-5-methylphenyl)methyl]-4-methylphenol Chemical compound OC=1C(C2CCCCC2)=CC(C)=CC=1CC(C=1O)=CC(C)=CC=1C1CCCCC1 AKNMPWVTPUHKCG-UHFFFAOYSA-N 0.000 description 1
- YIKVZDICBNEEOZ-UHFFFAOYSA-N 2-ethylhexyl dihydrogen phosphite Chemical compound CCCCC(CC)COP(O)O YIKVZDICBNEEOZ-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- 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 description 1
- HXIQYSLFEXIOAV-UHFFFAOYSA-N 2-tert-butyl-4-(5-tert-butyl-4-hydroxy-2-methylphenyl)sulfanyl-5-methylphenol Chemical compound CC1=CC(O)=C(C(C)(C)C)C=C1SC1=CC(C(C)(C)C)=C(O)C=C1C HXIQYSLFEXIOAV-UHFFFAOYSA-N 0.000 description 1
- BGWNOSDEHSHFFI-UHFFFAOYSA-N 2-tert-butyl-4-[(3-tert-butyl-4-hydroxy-5-methylphenyl)methylsulfanylmethyl]-6-methylphenol Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CSCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 BGWNOSDEHSHFFI-UHFFFAOYSA-N 0.000 description 1
- PFANXOISJYKQRP-UHFFFAOYSA-N 2-tert-butyl-4-[1-(5-tert-butyl-4-hydroxy-2-methylphenyl)butyl]-5-methylphenol Chemical compound C=1C(C(C)(C)C)=C(O)C=C(C)C=1C(CCC)C1=CC(C(C)(C)C)=C(O)C=C1C PFANXOISJYKQRP-UHFFFAOYSA-N 0.000 description 1
- MQWCQFCZUNBTCM-UHFFFAOYSA-N 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5-methylphenyl)sulfanyl-4-methylphenol Chemical compound CC(C)(C)C1=CC(C)=CC(SC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O MQWCQFCZUNBTCM-UHFFFAOYSA-N 0.000 description 1
- GPNYZBKIGXGYNU-UHFFFAOYSA-N 2-tert-butyl-6-[(3-tert-butyl-5-ethyl-2-hydroxyphenyl)methyl]-4-ethylphenol Chemical compound CC(C)(C)C1=CC(CC)=CC(CC=2C(=C(C=C(CC)C=2)C(C)(C)C)O)=C1O GPNYZBKIGXGYNU-UHFFFAOYSA-N 0.000 description 1
- BKZXZGWHTRCFPX-UHFFFAOYSA-N 2-tert-butyl-6-methylphenol Chemical compound CC1=CC=CC(C(C)(C)C)=C1O BKZXZGWHTRCFPX-UHFFFAOYSA-N 0.000 description 1
- ODJQKYXPKWQWNK-UHFFFAOYSA-L 3-(2-carboxylatoethylsulfanyl)propanoate Chemical compound [O-]C(=O)CCSCCC([O-])=O ODJQKYXPKWQWNK-UHFFFAOYSA-L 0.000 description 1
- MDWVSAYEQPLWMX-UHFFFAOYSA-N 4,4'-Methylenebis(2,6-di-tert-butylphenol) Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 MDWVSAYEQPLWMX-UHFFFAOYSA-N 0.000 description 1
- TVDZNGHKRSKPCD-UHFFFAOYSA-N 4-heptyl-n-(4-heptylphenyl)aniline Chemical compound C1=CC(CCCCCCC)=CC=C1NC1=CC=C(CCCCCCC)C=C1 TVDZNGHKRSKPCD-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 description 1
- FCQAFXHLHBGGSK-UHFFFAOYSA-N 4-nonyl-n-(4-nonylphenyl)aniline Chemical compound C1=CC(CCCCCCCCC)=CC=C1NC1=CC=C(CCCCCCCCC)C=C1 FCQAFXHLHBGGSK-UHFFFAOYSA-N 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- DWLMIYNUGWGKQW-UHFFFAOYSA-N C(CCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCC)CCCC)CCCC Chemical compound C(CCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCC)CCCC)CCCC DWLMIYNUGWGKQW-UHFFFAOYSA-N 0.000 description 1
- WFHKDFKMMXNXBE-UHFFFAOYSA-N C(CCCCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCCCC)CCCCCC)CCCCCC Chemical compound C(CCCCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCCCC)CCCCCC)CCCCCC WFHKDFKMMXNXBE-UHFFFAOYSA-N 0.000 description 1
- QZHGURFFNXQTML-UHFFFAOYSA-N C(CCCCCCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCCCCCC)CCCCCCCC)CCCCCCCC Chemical compound C(CCCCCCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCCCCCC)CCCCCCCC)CCCCCCCC QZHGURFFNXQTML-UHFFFAOYSA-N 0.000 description 1
- XLKXHHJLXFMSJJ-UHFFFAOYSA-N C(CCCCCCCCCCCCCCCCC)P(O)(O)(O)CCCCCCCCCCCCCCCCCC.P(OCCCCCCCCCCCCCCCCCC)(OCCCCCCCCCCCCCCCCCC)O Chemical compound C(CCCCCCCCCCCCCCCCC)P(O)(O)(O)CCCCCCCCCCCCCCCCCC.P(OCCCCCCCCCCCCCCCCCC)(OCCCCCCCCCCCCCCCCCC)O XLKXHHJLXFMSJJ-UHFFFAOYSA-N 0.000 description 1
- QAGAKTLKERBTFC-UHFFFAOYSA-N C1(=CC=CC=C1)NC1=CC=CC=C1.C(CCCCCCCC)C=1C(=C(C(=C(C1)NC1=CC=CC=C1)CCCCCCCCC)CCCCCCCCC)CCCCCCCCC Chemical compound C1(=CC=CC=C1)NC1=CC=CC=C1.C(CCCCCCCC)C=1C(=C(C(=C(C1)NC1=CC=CC=C1)CCCCCCCCC)CCCCCCCCC)CCCCCCCCC QAGAKTLKERBTFC-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- GHKOFFNLGXMVNJ-UHFFFAOYSA-N Didodecyl thiobispropanoate Chemical compound CCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCC GHKOFFNLGXMVNJ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- QAPVYZRWKDXNDK-UHFFFAOYSA-N P,P-Dioctyldiphenylamine Chemical compound C1=CC(CCCCCCCC)=CC=C1NC1=CC=C(CCCCCCCC)C=C1 QAPVYZRWKDXNDK-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- VSVVZZQIUJXYQA-UHFFFAOYSA-N [3-(3-dodecylsulfanylpropanoyloxy)-2,2-bis(3-dodecylsulfanylpropanoyloxymethyl)propyl] 3-dodecylsulfanylpropanoate Chemical compound CCCCCCCCCCCCSCCC(=O)OCC(COC(=O)CCSCCCCCCCCCCCC)(COC(=O)CCSCCCCCCCCCCCC)COC(=O)CCSCCCCCCCCCCCC VSVVZZQIUJXYQA-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000003818 basic metals Chemical class 0.000 description 1
- 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 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- JELQNFAUSQUEGV-UHFFFAOYSA-N benzyl diphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OCC1=CC=CC=C1 JELQNFAUSQUEGV-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- FQIPKXFDWAUMBN-UHFFFAOYSA-N bis(2-ethylhexoxy)-(2-ethylhexylsulfanyl)phosphane Chemical compound CCCCC(CC)COP(OCC(CC)CCCC)SCC(CC)CCCC FQIPKXFDWAUMBN-UHFFFAOYSA-N 0.000 description 1
- ZLMKQJQJURXYLC-UHFFFAOYSA-N bis(2-ethylhexoxy)-oxophosphanium Chemical compound CCCCC(CC)CO[P+](=O)OCC(CC)CCCC ZLMKQJQJURXYLC-UHFFFAOYSA-N 0.000 description 1
- FQUNFJULCYSSOP-UHFFFAOYSA-N bisoctrizole Chemical compound N1=C2C=CC=CC2=NN1C1=CC(C(C)(C)CC(C)(C)C)=CC(CC=2C(=C(C=C(C=2)C(C)(C)CC(C)(C)C)N2N=C3C=CC=CC3=N2)O)=C1O FQUNFJULCYSSOP-UHFFFAOYSA-N 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 1
- GXVWJQNUQYSLNR-UHFFFAOYSA-N butoxy(butylsulfanyl)phosphinous acid Chemical compound P(SCCCC)(OCCCC)O GXVWJQNUQYSLNR-UHFFFAOYSA-N 0.000 description 1
- LMZSPXZNYGLPAV-UHFFFAOYSA-N butoxy-dihydroxy-sulfanylidene-$l^{5}-phosphane Chemical compound CCCCOP(O)(O)=S LMZSPXZNYGLPAV-UHFFFAOYSA-N 0.000 description 1
- 125000006487 butyl benzyl group Chemical group 0.000 description 1
- MNVKBJFKKJDBGR-UHFFFAOYSA-N butylsulfanylphosphonous acid Chemical compound CCCCSP(O)O MNVKBJFKKJDBGR-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 125000000596 cyclohexenyl group Chemical group C1(=CCCCC1)* 0.000 description 1
- 125000002433 cyclopentenyl group Chemical group C1(=CCCC1)* 0.000 description 1
- 125000003493 decenyl group Chemical group [H]C([*])=C([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- RNIDAJHSDZPOSN-UHFFFAOYSA-N dibutoxy(butylsulfanyl)phosphane Chemical compound CCCCOP(OCCCC)SCCCC RNIDAJHSDZPOSN-UHFFFAOYSA-N 0.000 description 1
- OSPSWZSRKYCQPF-UHFFFAOYSA-N dibutoxy(oxo)phosphanium Chemical compound CCCCO[P+](=O)OCCCC OSPSWZSRKYCQPF-UHFFFAOYSA-N 0.000 description 1
- CCLBBCBPHBBKKD-UHFFFAOYSA-N dibutoxy-hydroxy-sulfanylidene-$l^{5}-phosphane Chemical compound CCCCOP(O)(=S)OCCCC CCLBBCBPHBBKKD-UHFFFAOYSA-N 0.000 description 1
- NAIBHQRYLPOHGG-UHFFFAOYSA-N dibutyl ethyl phosphate Chemical compound CCCCOP(=O)(OCC)OCCCC NAIBHQRYLPOHGG-UHFFFAOYSA-N 0.000 description 1
- WYPOCAVDDXABIF-UHFFFAOYSA-N didecyl hydrogen phosphite Chemical compound CCCCCCCCCCOP(O)OCCCCCCCCCC WYPOCAVDDXABIF-UHFFFAOYSA-N 0.000 description 1
- BEAIULUXYSRQHO-UHFFFAOYSA-N didodecoxy-hydroxy-sulfanylidene-$l^{5}-phosphane Chemical compound CCCCCCCCCCCCOP(O)(=S)OCCCCCCCCCCCC BEAIULUXYSRQHO-UHFFFAOYSA-N 0.000 description 1
- JTXUVYOABGUBMX-UHFFFAOYSA-N didodecyl hydrogen phosphate Chemical compound CCCCCCCCCCCCOP(O)(=O)OCCCCCCCCCCCC JTXUVYOABGUBMX-UHFFFAOYSA-N 0.000 description 1
- SPBMDAHKYSRJFO-UHFFFAOYSA-N didodecyl hydrogen phosphite Chemical compound CCCCCCCCCCCCOP(O)OCCCCCCCCCCCC SPBMDAHKYSRJFO-UHFFFAOYSA-N 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- CAVXVJGHUYVTRI-UHFFFAOYSA-N dihydroxy-octoxy-sulfanylidene-$l^{5}-phosphane Chemical compound CCCCCCCCOP(O)(O)=S CAVXVJGHUYVTRI-UHFFFAOYSA-N 0.000 description 1
- WDNQRCVBPNOTNV-UHFFFAOYSA-N dinonylnaphthylsulfonic acid Chemical compound C1=CC=C2C(S(O)(=O)=O)=C(CCCCCCCCC)C(CCCCCCCCC)=CC2=C1 WDNQRCVBPNOTNV-UHFFFAOYSA-N 0.000 description 1
- FRXGWNKDEMTFPL-UHFFFAOYSA-N dioctadecyl hydrogen phosphate Chemical compound CCCCCCCCCCCCCCCCCCOP(O)(=O)OCCCCCCCCCCCCCCCCCC FRXGWNKDEMTFPL-UHFFFAOYSA-N 0.000 description 1
- UMAHARXOTKOOHK-UHFFFAOYSA-N dioctoxy(octylsulfanyl)phosphane Chemical compound CCCCCCCCOP(OCCCCCCCC)SCCCCCCCC UMAHARXOTKOOHK-UHFFFAOYSA-N 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- ORDPXYVBSFJMAW-UHFFFAOYSA-N diphenoxy(phenylsulfanyl)phosphane Chemical compound C=1C=CC=CC=1OP(SC=1C=CC=CC=1)OC1=CC=CC=C1 ORDPXYVBSFJMAW-UHFFFAOYSA-N 0.000 description 1
- FYOYCZHNDCCGCE-UHFFFAOYSA-N diphenyl hydrogen phosphite Chemical compound C=1C=CC=CC=1OP(O)OC1=CC=CC=C1 FYOYCZHNDCCGCE-UHFFFAOYSA-N 0.000 description 1
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- XEJNLUBEFCNORG-UHFFFAOYSA-N ditridecyl hydrogen phosphate Chemical compound CCCCCCCCCCCCCOP(O)(=O)OCCCCCCCCCCCCC XEJNLUBEFCNORG-UHFFFAOYSA-N 0.000 description 1
- 125000005066 dodecenyl group Chemical group C(=CCCCCCCCCCC)* 0.000 description 1
- VOBCOZODXKKZJQ-UHFFFAOYSA-N dodecoxy(dodecylsulfanyl)phosphinous acid Chemical compound CCCCCCCCCCCCOP(O)SCCCCCCCCCCCC VOBCOZODXKKZJQ-UHFFFAOYSA-N 0.000 description 1
- ISWBBUXCFWZBKC-UHFFFAOYSA-N dodecoxy-dihydroxy-sulfanylidene-$l^{5}-phosphane Chemical compound CCCCCCCCCCCCOP(O)(O)=S ISWBBUXCFWZBKC-UHFFFAOYSA-N 0.000 description 1
- RRZCFXQTVDJDGF-UHFFFAOYSA-N dodecyl 3-(3-octadecoxy-3-oxopropyl)sulfanylpropanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCC RRZCFXQTVDJDGF-UHFFFAOYSA-N 0.000 description 1
- FQERTQNSHXPBQS-UHFFFAOYSA-N dodecylsulfanylphosphonous acid Chemical compound CCCCCCCCCCCCSP(O)O FQERTQNSHXPBQS-UHFFFAOYSA-N 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- ZJXZSIYSNXKHEA-UHFFFAOYSA-N ethyl dihydrogen phosphate Chemical compound CCOP(O)(O)=O ZJXZSIYSNXKHEA-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 229920006213 ethylene-alphaolefin copolymer Polymers 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 125000006038 hexenyl group Chemical group 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- DQCOURVTDJUHQM-UHFFFAOYSA-N hydroxy-dioctoxy-sulfanylidene-$l^{5}-phosphane Chemical compound CCCCCCCCOP(O)(=S)OCCCCCCCC DQCOURVTDJUHQM-UHFFFAOYSA-N 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 239000010722 industrial gear oil Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000002463 lignoceryl 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])C([H])([H])[H] 0.000 description 1
- 125000005645 linoleyl group Chemical group 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- XUMOVISJJBHALN-UHFFFAOYSA-N n-butyl-n-phenylnaphthalen-1-amine Chemical compound C=1C=CC2=CC=CC=C2C=1N(CCCC)C1=CC=CC=C1 XUMOVISJJBHALN-UHFFFAOYSA-N 0.000 description 1
- VCQJSMBSGMLFKI-UHFFFAOYSA-N n-heptyl-n-phenylnaphthalen-1-amine Chemical compound C=1C=CC2=CC=CC=C2C=1N(CCCCCCC)C1=CC=CC=C1 VCQJSMBSGMLFKI-UHFFFAOYSA-N 0.000 description 1
- MKEUPRYKXJEVEJ-UHFFFAOYSA-N n-hexyl-n-phenylnaphthalen-1-amine Chemical compound C=1C=CC2=CC=CC=C2C=1N(CCCCCC)C1=CC=CC=C1 MKEUPRYKXJEVEJ-UHFFFAOYSA-N 0.000 description 1
- LVZUNTGFCXNQAF-UHFFFAOYSA-N n-nonyl-n-phenylaniline Chemical compound C=1C=CC=CC=1N(CCCCCCCCC)C1=CC=CC=C1 LVZUNTGFCXNQAF-UHFFFAOYSA-N 0.000 description 1
- UMKFCWWZAONEEQ-UHFFFAOYSA-N n-nonyl-n-phenylnaphthalen-1-amine Chemical compound C=1C=CC2=CC=CC=C2C=1N(CCCCCCCCC)C1=CC=CC=C1 UMKFCWWZAONEEQ-UHFFFAOYSA-N 0.000 description 1
- RQVGZVZFVNMBGS-UHFFFAOYSA-N n-octyl-n-phenylaniline Chemical compound C=1C=CC=CC=1N(CCCCCCCC)C1=CC=CC=C1 RQVGZVZFVNMBGS-UHFFFAOYSA-N 0.000 description 1
- ZLNMGXQGGUZIJL-UHFFFAOYSA-N n-octyl-n-phenylnaphthalen-1-amine Chemical compound C=1C=CC2=CC=CC=C2C=1N(CCCCCCCC)C1=CC=CC=C1 ZLNMGXQGGUZIJL-UHFFFAOYSA-N 0.000 description 1
- NCEGDHPVRKYIJN-UHFFFAOYSA-N n-pentyl-n-phenylnaphthalen-1-amine Chemical compound C=1C=CC2=CC=CC=C2C=1N(CCCCC)C1=CC=CC=C1 NCEGDHPVRKYIJN-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 125000005064 octadecenyl group Chemical group C(=CCCCCCCCCCCCCCCCC)* 0.000 description 1
- JKBYAWVSVVSRIX-UHFFFAOYSA-N octadecyl 2-(1-octadecoxy-1-oxopropan-2-yl)sulfanylpropanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)SC(C)C(=O)OCCCCCCCCCCCCCCCCCC JKBYAWVSVVSRIX-UHFFFAOYSA-N 0.000 description 1
- UHGIMQLJWRAPLT-UHFFFAOYSA-N octadecyl dihydrogen phosphate Chemical compound CCCCCCCCCCCCCCCCCCOP(O)(O)=O UHGIMQLJWRAPLT-UHFFFAOYSA-N 0.000 description 1
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 description 1
- GJDHSQDAXKCRTL-UHFFFAOYSA-N octoxy(octylsulfanyl)phosphinous acid Chemical compound CCCCCCCCOP(O)SCCCCCCCC GJDHSQDAXKCRTL-UHFFFAOYSA-N 0.000 description 1
- CBFCDTFDPHXCNY-UHFFFAOYSA-N octyldodecane Natural products CCCCCCCCCCCCCCCCCCCC CBFCDTFDPHXCNY-UHFFFAOYSA-N 0.000 description 1
- DSKNRIRUAYEWCO-UHFFFAOYSA-N octylsulfanylphosphonous acid Chemical compound CCCCCCCCSP(O)O DSKNRIRUAYEWCO-UHFFFAOYSA-N 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- 125000001117 oleyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229950000688 phenothiazine Drugs 0.000 description 1
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 1
- DOIRQSBPFJWKBE-UHFFFAOYSA-N phthalic acid di-n-butyl ester Natural products CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 150000003900 succinic acid esters Chemical class 0.000 description 1
- 229960002317 succinimide Drugs 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 125000005063 tetradecenyl group Chemical group C(=CCCCCCCCCCCCC)* 0.000 description 1
- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 description 1
- PPEZWDDRWXDXOQ-UHFFFAOYSA-N tributoxy(sulfanylidene)-$l^{5}-phosphane Chemical compound CCCCOP(=S)(OCCCC)OCCCC PPEZWDDRWXDXOQ-UHFFFAOYSA-N 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- 150000005691 triesters Chemical class 0.000 description 1
- BDZBKCUKTQZUTL-UHFFFAOYSA-N triethyl phosphite Chemical compound CCOP(OCC)OCC BDZBKCUKTQZUTL-UHFFFAOYSA-N 0.000 description 1
- YVFHKLYMBACKFA-UHFFFAOYSA-N trioctoxy(sulfanylidene)-$l^{5}-phosphane Chemical compound CCCCCCCCOP(=S)(OCCCCCCCC)OCCCCCCCC YVFHKLYMBACKFA-UHFFFAOYSA-N 0.000 description 1
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 1
- DECPGQLXYYCNEZ-UHFFFAOYSA-N tris(6-methylheptyl) phosphite Chemical compound CC(C)CCCCCOP(OCCCCCC(C)C)OCCCCCC(C)C DECPGQLXYYCNEZ-UHFFFAOYSA-N 0.000 description 1
- QEDNBHNWMHJNAB-UHFFFAOYSA-N tris(8-methylnonyl) phosphite Chemical compound CC(C)CCCCCCCOP(OCCCCCCCC(C)C)OCCCCCCCC(C)C QEDNBHNWMHJNAB-UHFFFAOYSA-N 0.000 description 1
- KLAPGAOQRZTCBI-UHFFFAOYSA-N tris(butylsulfanyl)phosphane Chemical compound CCCCSP(SCCCC)SCCCC KLAPGAOQRZTCBI-UHFFFAOYSA-N 0.000 description 1
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$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 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Lubricants (AREA)
Description
本発明はギヤ油組成物に関し、詳しくは特に極圧性、耐摩耗性、疲労寿命特性に優れ、かつ省燃費性に優れるギヤ油組成物に関する。 The present invention relates to a gear oil composition, and particularly relates to a gear oil composition that is particularly excellent in extreme pressure properties, wear resistance, fatigue life characteristics, and excellent in fuel efficiency.
ギヤ油は歯車装置用潤滑油であって、自動車その他高速高荷重歯車用、一般機械の比較的軽荷重歯車用、一般機械の比較的高荷重歯車用などとして、歯車の損傷・焼付を防止するために用いられている。このようなギヤ油においては、通常、極圧性等に優れることが要求され、特にデファレンシャル油においてはMTF(手動変速機油)に比べて極圧性が重要視される。また、この他にも用途に応じて各種性能の向上が求められ、種々の技術開発が行われてきた。 Gear oil is a lubricant for gear devices, and prevents damage and seizure of gears for automobiles and other high-speed and high-load gears, relatively light load gears for general machines, and relatively high load gears for general machines. It is used for. Such gear oils are usually required to be excellent in extreme pressure properties, and especially in differential oils, extreme pressure properties are more important than MTF (manual transmission fluid). In addition to this, various performance improvements are required according to applications, and various technological developments have been made.
例えば、特定のエチレン−α−オレフィン共重合体を含有させることにより、剪断安定性、極圧性などを向上させた潤滑油組成物が開示されている(例えば、特許文献1、2参照)。当該潤滑油組成物は、温度特性に優れ、かつせん断安定性に優れる潤滑油組成物である。また、ギヤ油に対して求められる特性としては、上記のもの以外に耐摩耗性、酸化安定性、熱安定性等が挙げられる。 For example, there has been disclosed a lubricating oil composition having improved shear stability, extreme pressure and the like by containing a specific ethylene-α-olefin copolymer (for example, see Patent Documents 1 and 2). The lubricating oil composition is a lubricating oil composition having excellent temperature characteristics and excellent shear stability. In addition to the above properties, the properties required for gear oil include wear resistance, oxidation stability, thermal stability, and the like.
これらの性能に加えて、近年、自動車用ギヤ油等においては、省燃費性の向上が求められている。また、例えば低粘度のギヤ油を用いて粘性抵抗を減らすことが考えられるが、この方法では油膜切れが生じ易くなるため、耐焼付き性の低下、ベアリングや歯車の疲労寿命悪化などの問題を新たに発生させる原因になる。
このように、省燃費性の向上とギヤ油としての基本的な性能を両立することは困難であり、さらなる技術開発が求められていた。
In addition to these performances, in recent years, improvements in fuel efficiency have been demanded in automobile gear oils and the like. In addition, for example, it is conceivable to reduce the viscous resistance by using low-viscosity gear oil. However, since this method tends to cause oil film breakage, new problems such as deterioration of seizure resistance and deterioration of fatigue life of bearings and gears are newly introduced. Cause it to occur.
Thus, it has been difficult to achieve both improved fuel economy and basic performance as gear oil, and further technical development has been demanded.
本発明は上記事情に鑑みなされたもので、低粘度(SAEJ306粘度グレード、#85以下)でありながら、特に極圧性(耐焼付き性)、耐摩耗性、疲労寿命特性に優れ、かつ省燃費性に優れるギヤ油組成物を提供することを目的とするものである。 The present invention has been made in view of the above circumstances, and is particularly excellent in extreme pressure (seizure resistance), wear resistance, fatigue life characteristics, and fuel economy while having a low viscosity (SAEJ306 viscosity grade, # 85 or less). An object of the present invention is to provide a gear oil composition having excellent resistance.
本発明者らは、境界潤滑条件における摩擦係数、トラクション係数(混合潤滑領域における摩擦係数)に注目し鋭意研究を重ねた結果、特定の基油および特定の添加剤を組み合わせることで、上記課題が解決することを見出した。本発明はかかる知見に基いて完成したものである。 As a result of intensive studies focusing on the friction coefficient and the traction coefficient (friction coefficient in the mixed lubrication region) under the boundary lubrication conditions, the present inventors have combined the specific base oil and the specific additive to achieve the above problem. I found out to solve it. The present invention has been completed based on such knowledge.
すなわち本発明は、
<1> (A)100℃における動粘度が2mm2/s以上20mm2/s以下、粘度指数が125以上140以下である鉱油を基油全量基準で80質量%以上含み、粘度指数が130以上140以下である基油と、
(B)数平均分子量が2,000以上8,000以下のエチレン−αオレフィン共重合体と、
(C)下記一般式(I)で表される硫黄含有化合物と、
R1−Sx−R2 ・・・(I)
〔一般式(I)中、R1およびR2は、それぞれ独立に炭素数4乃至16の炭化水素基を表し、xは2乃至4の整数を表す。〕
(D)有機モリブデン化合物と、
(E)リン酸エステル系化合物、亜リン酸エステル系化合物、チオリン酸エステル系化合物及びチオ亜リン酸エステル系化合物から選ばれる、炭素数2〜24の炭化水素基を有するリン含有化合物と、
を配合してなり、
組成物全量基準で、(B)成分の含有量が2質量%以上10質量%以下、(C)成分の含有量が硫黄原子換算で1.2質量%以上2.0質量%以下、(D)成分の含有量がモリブデン原子換算で100質量ppm以上300質量ppm以下、(E)成分の含有量がリン原子換算で0.15質量%以上0.2質量%以下であって、かつ組成物中の硫黄原子とリン原子との質量比(S/P)が8以上11以下であるギヤ油組成物である。
That is, the present invention
<1> (A) Mineral oil having a kinematic viscosity at 100 ° C. of 2 mm 2 / s to 20 mm 2 / s and a viscosity index of 125 to 140 is 80% by mass or more based on the total amount of the base oil, and the viscosity index is 130 or more. A base oil that is 140 or less;
(B) an ethylene-α-olefin copolymer having a number average molecular weight of 2,000 to 8,000,
(C) a sulfur-containing compound represented by the following general formula (I):
R 1 -S x -R 2 (I)
[In General Formula (I), R 1 and R 2 each independently represent a hydrocarbon group having 4 to 16 carbon atoms, and x represents an integer of 2 to 4. ]
(D) an organic molybdenum compound;
(E) a phosphorus-containing compound having a hydrocarbon group having 2 to 24 carbon atoms selected from a phosphoric ester compound, a phosphite compound, a thiophosphate compound, and a thiophosphite compound;
And
Based on the total amount of the composition, the content of the component (B) is 2% by mass or more and 10% by mass or less, the content of the component (C) is 1.2% by mass or more and 2.0% by mass or less in terms of sulfur atom, (D The component content is 100 mass ppm or more and 300 mass ppm or less in terms of molybdenum atom, the content of the component (E) is 0.15 mass% or more and 0.2 mass% or less in terms of phosphorus atom, and the composition It is a gear oil composition whose mass ratio (S / P) of sulfur atom and phosphorus atom in it is 8 or more and 11 or less.
<2> 前記(D)成分である有機モリブデン化合物が、モリブデンジチオホスフェート及びモリブデンジチオカーバメートから選ばれる一種以上である<1>に記載のギヤ油組成物である。 <2> The gear oil composition according to <1>, wherein the organic molybdenum compound as the component (D) is at least one selected from molybdenum dithiophosphate and molybdenum dithiocarbamate.
本発明によれば、極圧性、疲労寿命特性、耐摩耗性に優れ、かつ省燃費性に優れるギヤ油組成物が提供される。 ADVANTAGE OF THE INVENTION According to this invention, the gear oil composition which is excellent in extreme pressure property, fatigue life characteristic, abrasion resistance, and is excellent in fuel-saving property is provided.
以下、本発明を実施形態により説明する。
本実施形態のギヤ油組成物は、(A)基油、(B)エチレン−αオレフィン共重合体、(C)硫黄含有化合物、(D)有機モリブデン化合物、および(E)リン含有化合物の各成分を配合してなるものである。
Hereinafter, the present invention will be described with reference to embodiments.
The gear oil composition of this embodiment includes (A) a base oil, (B) an ethylene-α olefin copolymer, (C) a sulfur-containing compound, (D) an organic molybdenum compound, and (E) a phosphorus-containing compound. It is formed by blending ingredients.
((A)成分)
本実施形態における前記(A)成分は、100℃における動粘度が2mm2/s以上20mm2/s以下、粘度指数が125以上140以下である鉱油を基油全量基準で80質量%以上含み、粘度指数が130以上140以下である基油である。
上記を満たす基油を用いることにより、ギヤ油組成物における疲労寿命特性が向上する。
((A) component)
The component (A) in the present embodiment includes a mineral oil having a kinematic viscosity at 100 ° C. of 2 mm 2 / s to 20 mm 2 / s and a viscosity index of 125 to 140 in terms of 80% by mass or more based on the total amount of the base oil, A base oil having a viscosity index of 130 or more and 140 or less.
By using the base oil satisfying the above, the fatigue life characteristics in the gear oil composition are improved.
基油に含まれる前記鉱油は、100℃における動粘度が2mm2/s以上20mm2/s以下である。
100℃における動粘度が2mm2/s未満では、高温時の油膜強度が不足したり、蒸発損失が大きくなる等の問題が発生しやすくなる。一方、20mm2/sを超えると、粘性抵抗による動力損失が大きくなる。当該観点から、好ましくは100℃における動粘度が4mm2/s以上13mm2/s以下であり、より好ましくは6mm2/s以上11mm2/s以下である。
The mineral oil contained in the base oil has a kinematic viscosity at 100 ° C. of 2 mm 2 / s or more and 20 mm 2 / s or less.
When the kinematic viscosity at 100 ° C. is less than 2 mm 2 / s, problems such as insufficient oil film strength at high temperatures and increased evaporation loss tend to occur. On the other hand, when it exceeds 20 mm 2 / s, power loss due to viscous resistance increases. From this viewpoint, the kinematic viscosity at 100 ° C. is preferably 4 mm 2 / s to 13 mm 2 / s, and more preferably 6 mm 2 / s to 11 mm 2 / s.
また、前記鉱油の粘度指数は、125以上140以下である
粘度指数が125未満では、トラクション係数の低下が不十分となる。粘度指数が140を超えると、アニリン点が高くなり、シール材料適合性が悪化したり、添加剤の溶解性が低下し、極圧性が十分に発揮できないことになる。粘度指数は好ましくは125以上130以下である。
The mineral oil has a viscosity index of 125 or more and 140 or less. If the viscosity index is less than 125, the traction coefficient is not sufficiently lowered. When the viscosity index exceeds 140, the aniline point becomes high, the sealing material compatibility is deteriorated, the solubility of the additive is lowered, and the extreme pressure property cannot be sufficiently exhibited. The viscosity index is preferably 125 or more and 130 or less.
前記(A)成分である基油において使用される鉱油としては、上記特性を満たす限り特に制限なく使用することができ、例えば、パラフィン基系原油や中間基系原油を常圧蒸留するかあるいは常圧蒸留の残渣油を減圧蒸留して得られる留出油を、常法にしたがって精製することによって得られる精製油、あるいは精製後さらに深脱ロウ処理することによって得られる深脱ロウ油などを挙げることができる。 The mineral oil used in the base oil as the component (A) can be used without particular limitation as long as the above characteristics are satisfied. For example, paraffinic crude oil or intermediate crude oil is distilled at atmospheric pressure or Examples include a refined oil obtained by purifying a distillate obtained by subjecting a residual oil of pressure distillation to vacuum distillation according to a conventional method, or a deep dewaxed oil obtained by further deep dewaxing after purification. be able to.
上記の精製法としては、特に制限はなく、様々な方法を用いることができる。通常は(a)水素化処理,(b)脱ロウ処理(溶剤脱ロウまたは水添脱ロウ)、(c)溶剤抽出処理、(d)アルカリ蒸留または硫酸洗浄処理、及び(e)白土処理を単独であるいは適宜順序で組み合わせて行う。また同一処理を複数段に分けて繰り返し行うことも有効である。例えば、(1)留出油を水素化処理するか、または水素化処理した後、アルカリ蒸留または硫酸洗浄処理を行う方法、(2)留出油を水素化処理した後、脱ロウ処理する方法、(3)留出油を溶剤抽出処理した後、水素化処理する方法、(4)留出油に二段あるいは三段の水素化処理を行う、またはその後にアルカリ蒸留または硫酸洗浄処理する方法、さらには(5)上述した(1)〜(4)の如き処理後、再度脱ロウ処理して深脱ロウ油とする方法などがある。いずれの方法においても、目的の基油の性状に合わせて条件を適宜調整すればよい。 The purification method is not particularly limited, and various methods can be used. Usually (a) hydrogenation treatment, (b) dewaxing treatment (solvent dewaxing or hydrodewaxing), (c) solvent extraction treatment, (d) alkali distillation or sulfuric acid washing treatment, and (e) white clay treatment. It carries out individually or in combination in an appropriate order. It is also effective to repeat the same process in multiple stages. For example, (1) a method in which distillate oil is hydrogenated or hydrogenated, and then subjected to alkali distillation or sulfuric acid washing treatment, and (2) a method in which distillate oil is hydrogenated and then dewaxed. , (3) A method of subjecting the distillate to a hydrogenation treatment after solvent extraction, (4) A method of subjecting the distillate to a two-stage or three-stage hydrotreatment, or subsequent alkali distillation or sulfuric acid washing treatment Further, there is (5) a method of dewaxing again to obtain a deep dewaxed oil after the treatments (1) to (4) described above. In any method, the conditions may be appropriately adjusted according to the properties of the target base oil.
また、本実施形態における基油は鉱油以外にポリオレフィン系合成油を含んでもよく、該ポリオレフィン系合成油としては、例えば、αオレフィンの単独重合体または共重合体、ポリブテン、あるいはこれらの水素化物等が例示され、粘度指数が高い点で、デセンオリゴマー等の炭素数6〜14のαオレフィンのオリゴマー、エチレン−プロピレン共重合体等のエチレン−αオレフィン共重合体、ポリブテン、あるいはこれらの水素化物が好ましい。 Further, the base oil in the present embodiment may contain a polyolefin-based synthetic oil in addition to the mineral oil. Examples of the polyolefin-based synthetic oil include a homopolymer or copolymer of α-olefin, polybutene, or a hydride thereof. In terms of the high viscosity index, an oligomer of an α-olefin having 6 to 14 carbon atoms such as a decene oligomer, an ethylene-α-olefin copolymer such as an ethylene-propylene copolymer, polybutene, or a hydride thereof is used. preferable.
本実施形態においては、基油として前記鉱油を一種用いてもよく、二種以上組み合わせて用いてもよい。また、前記鉱油一種以上とポリオレフィン系合成油一種以上とを組み合わせて用いてもよい。
また、本実施形態における基油は、上記鉱油を、基油全量基準で80質量%以上含む。含有量が80質量%未満では、トラクション係数の低下が不十分となる。上記含有量は、好ましくは85質量%以上であり、より好ましくは90質量%以上である。
In this embodiment, 1 type of the said mineral oil may be used as a base oil, and it may be used in combination of 2 or more types. One or more mineral oils and one or more polyolefin synthetic oils may be used in combination.
Moreover, the base oil in this embodiment contains 80 mass% or more of the mineral oil based on the total amount of the base oil. When the content is less than 80% by mass, the reduction of the traction coefficient is insufficient. The content is preferably 85% by mass or more, and more preferably 90% by mass or more.
そして、上記鉱油を含む本実施形態における基油は、粘度指数が130以上140以下である。粘度指数が130未満では、粘度の温度依存性が大きくなりすぎ、140を超えると、アニリン点が高くなり、シール材料適合性が悪化したり、添加剤の溶解性が低下し、極圧性が十分に発揮できないことになる。また、粘度指数が上記範囲にないと、当該基油を後述する(B)成分と組み合わせても、トラクション係数および疲労寿命特性の両方に関して優れた性能を得ることができない。
上記粘度指数は132以上138以下であることが好ましい。
And the base oil in this embodiment containing the said mineral oil is 130-140 in viscosity index. When the viscosity index is less than 130, the temperature dependency of the viscosity becomes too large. When it exceeds 140, the aniline point becomes high, the sealing material compatibility is deteriorated, the solubility of the additive is lowered, and the extreme pressure property is sufficient. It will not be possible to demonstrate. Moreover, if the viscosity index is not within the above range, even if the base oil is combined with the component (B) described later, excellent performance in terms of both the traction coefficient and fatigue life characteristics cannot be obtained.
The viscosity index is preferably 132 or more and 138 or less.
経済性および各種添加剤の溶解性の観点から、本実施形態における(A)成分である基油は、鉱油からなる基油であることが好ましく、特に深脱ロウ処理によって得られる鉱油が好適である。この深脱ロウ処理は、苛酷な条件下での溶剤脱ロウ処理法やゼオライト触媒を用いた接触水添脱ロウ処理法などによって行われる。 From the viewpoint of economy and solubility of various additives, the base oil that is the component (A) in this embodiment is preferably a base oil made of mineral oil, and mineral oil obtained by deep dewaxing is particularly preferred. is there. This deep dewaxing process is performed by a solvent dewaxing process under severe conditions, a contact hydrodewaxing process using a zeolite catalyst, or the like.
((B)成分)
本実施形態における(B)成分であるエチレン−αオレフィン共重合体は、数平均分子量が2000以上8000以下のエチレン−αオレフィン共重合体である。数平均分子量が2000未満であると粘度指数の向上効果が十分ではなく、8000を超えるとせん断安定性が悪くなる。当該観点から、好ましくは数平均分子量が3000以上8000以下であり、より好ましくは4000以上7000以下である。
((B) component)
The ethylene-α olefin copolymer as the component (B) in the present embodiment is an ethylene-α olefin copolymer having a number average molecular weight of 2000 or more and 8000 or less. When the number average molecular weight is less than 2000, the effect of improving the viscosity index is not sufficient, and when it exceeds 8000, the shear stability is deteriorated. From this viewpoint, the number average molecular weight is preferably 3000 or more and 8000 or less, and more preferably 4000 or more and 7000 or less.
このエチレン−αオレフィン共重合体は、エチレンと炭素数3〜20のαオレフィン、例えばプロピレン、1−ブテン、1−デセンなどとの共重合体であって、極性基を含まない重合体である。また、エチレンとαオレフィンとの組成比(質量%比)は30/70〜60/40の範囲であることが好ましい。
本実施形態においては、(B)成分であるエチレン−αオレフィン共重合体は、一種を単独で用いてもよく、二種以上を組み合わせて用いてもよい。
This ethylene-α-olefin copolymer is a copolymer of ethylene and an α-olefin having 3 to 20 carbon atoms, such as propylene, 1-butene, 1-decene, and the like, and does not contain a polar group. . Moreover, it is preferable that the composition ratio (mass% ratio) of ethylene and alpha olefin is the range of 30 / 70-60 / 40.
In this embodiment, the ethylene-alpha olefin copolymer which is (B) component may be used individually by 1 type, and may be used in combination of 2 or more type.
本実施形態においては、前記(B)成分であるエチレン−αオレフィン共重合体は、ギヤ油組成物全量基準で、2質量%以上10質量%以下配合されるなるものであり、好ましくは3質量%以上9質量%以下、より好ましくは4.5質量%以下8.5質量%以下配合されてなる。配合量が2質量%未満では、トラクション係数を低下させる効果や粘度指数向上効果が充分でなく、10質量%を超えると、その配合量に見合った効果は得られず、またせん断安定性も悪化する。 In the present embodiment, the ethylene-α olefin copolymer as the component (B) is blended in an amount of 2% by mass to 10% by mass, preferably 3% by mass based on the total amount of the gear oil composition. % To 9% by mass, more preferably 4.5% to 8.5% by mass. If the blending amount is less than 2% by mass, the effect of reducing the traction coefficient and the effect of improving the viscosity index are not sufficient. If the blending amount exceeds 10% by mass, an effect commensurate with the blending amount cannot be obtained, and the shear stability is deteriorated. To do.
本実施形態においては、(A)成分である基油と(B)成分であるエチレン−αオレフィン共重合体との組み合わせを利用する。すなわち、これらを併用することで、疲労寿命特性を低下させることなくトラクション係数を低くすることができ、省燃費性向上効果が得られる。従来、基油としてポリオレフィン系合成油を使用するとトラクション係数が低下することが知られているが、基油として鉱油を用いた場合においてもエチレン−αオレフィン共重合体との組み合わせにより同等の効果が得られる。したがって、この場合には、上記効果に加えて、前述の鉱油を用いることによる経済性および各種添加剤の溶解性についての利点を生かすことができる。 In the present embodiment, a combination of the base oil as the component (A) and the ethylene-α olefin copolymer as the component (B) is used. That is, by using these in combination, the traction coefficient can be lowered without deteriorating the fatigue life characteristics, and an effect of improving fuel economy can be obtained. Conventionally, it has been known that the use of a polyolefin-based synthetic oil as a base oil reduces the traction coefficient, but even when a mineral oil is used as a base oil, an equivalent effect can be obtained by a combination with an ethylene-α-olefin copolymer. can get. Therefore, in this case, in addition to the above-described effects, the advantages of using the above-described mineral oil and the solubility of various additives can be utilized.
((C)成分)
本実施形態における(C)成分である硫黄含有化合物は、下記一般式(I)で表される硫黄含有化合物である。
R1−Sx−R2 ・・・(I)
上記一般式(I)中、R1およびR2はそれぞれ独立に、炭素数4〜16の炭化水素基を表し、直鎖状であっても分岐鎖状であってもよい。炭素数が4未満のときは耐摩耗性が低下し、16を超えると酸化安定性が低下する。当該観点から、炭素数は好ましくは6〜14であり、より好ましくは8〜10である。また、酸化安定性の点で優れることから分岐鎖が好ましく、具体的にはt−ブチル基が挙げられる。また一般式(I)中、xは2〜4の整数を表す。xが2未満のときは極圧性が低下し、4を超えると酸化安定性が低下する。当該観点からより、xは好ましくは2または3である。
具体的な化合物としては、ジ−t−ブチルジスルフィドやジ−t−ブチルトリスルフィドが挙げられる。本実施形態においては、(C)成分である硫黄含有化合物は、一種を単独で用いてもよく、二種以上を組み合わせて用いてもよい。
((C) component)
The sulfur-containing compound that is the component (C) in the present embodiment is a sulfur-containing compound represented by the following general formula (I).
R 1 -S x -R 2 (I)
In the general formula (I), R 1 and R 2 each independently represent a hydrocarbon group having 4 to 16 carbon atoms, and may be linear or branched. When the carbon number is less than 4, the wear resistance is lowered, and when it exceeds 16, the oxidation stability is lowered. From this viewpoint, the carbon number is preferably 6 to 14, and more preferably 8 to 10. Moreover, since it is excellent in the point of oxidation stability, a branched chain is preferable and a t-butyl group is specifically mentioned. Moreover, in general formula (I), x represents the integer of 2-4. When x is less than 2, the extreme pressure is lowered, and when it exceeds 4, the oxidation stability is lowered. From this viewpoint, x is preferably 2 or 3.
Specific examples of the compound include di-t-butyl disulfide and di-t-butyl trisulfide. In this embodiment, the sulfur-containing compound that is the component (C) may be used alone or in combination of two or more.
本実施形態において、前記(C)成分である硫黄含有化合物は、ギヤ油組成物全量基準、硫黄原子換算で1.2質量%以上2.0質量%以下配合され、好ましくは1.4質量%以上1.95質量%以下、より好ましくは1.6質量%以上1.9質量%以下配合される。配合量が1.2質量%未満では極圧性が低下し、2.0質量%を超えると、スラッジの発生が多くなる。 In the present embodiment, the sulfur-containing compound as the component (C) is blended in an amount of 1.2% by mass or more and 2.0% by mass or less, preferably 1.4% by mass in terms of the total amount of gear oil composition, in terms of sulfur atoms. The amount is 1.95% by mass or less, more preferably 1.6% by mass or more and 1.9% by mass or less. When the blending amount is less than 1.2% by mass, the extreme pressure property is lowered, and when it exceeds 2.0% by mass, the generation of sludge increases.
((D)成分)
本実施形態における(D)成分であるの有機モリブデン化合物としては、従来、潤滑油用添加剤として使用される有機モリブデン化合物が使用されるが、例えばモリブデンジチオホスフェート(MoDTP)やモリブデンジチオカーバメート(MoDTC)などが境界潤滑領域での摩擦係数を低減させる点で好ましく、モリブデンジチオカーバメートがより好ましい。
((D) component)
As the organomolybdenum compound as component (D) in the present embodiment, an organomolybdenum compound conventionally used as an additive for lubricating oil is used. For example, molybdenum dithiophosphate (MoDTP) or molybdenum dithiocarbamate (MoDTC). ) And the like are preferable in terms of reducing the friction coefficient in the boundary lubrication region, and molybdenum dithiocarbamate is more preferable.
モリブデンジチオカーバメートとしては、一般式(II)で表される硫化オキシモリブデンジチオカーバメイトを挙げることができる。 Examples of molybdenum dithiocarbamate include sulfurized oxymolybdenum dithiocarbamate represented by the general formula (II).
一般式(II)中、R3及びR4は、それぞれ炭素数4〜24の炭化水素基、x及びyは、それぞれ1〜3の数を示し、xとyの和は4である。
ここで、上記炭素数4〜24の炭化水素基としては、例えば、炭素数4〜24のアルキル基、炭素数4〜24のアルケニル基、炭素数6〜24のアリール基、炭素数7〜24のアリールアルキル基などが挙げられる。炭化水素基の炭素数が4以上であると基油に対する溶解性が良好であり、また炭素数24以下であると良好な効果が発揮されると共に、入手も容易となる。前記R3及びR4は、互いに同一でも異なっていてもよい。
In general formula (II), R 3 and R 4 are each a hydrocarbon group having 4 to 24 carbon atoms, x and y are each a number from 1 to 3, and the sum of x and y is 4.
Here, examples of the hydrocarbon group having 4 to 24 carbon atoms include an alkyl group having 4 to 24 carbon atoms, an alkenyl group having 4 to 24 carbon atoms, an aryl group having 6 to 24 carbon atoms, and 7 to 24 carbon atoms. And arylalkyl groups. When the hydrocarbon group has 4 or more carbon atoms, the solubility in the base oil is good, and when the hydrocarbon group has 24 or less carbon atoms, a good effect is exhibited and acquisition is easy. R 3 and R 4 may be the same as or different from each other.
上記炭素数4〜24のアルキル基及び炭素数4〜24のアルケニル基は、直鎖状、分岐鎖状及び環状のいずれであってもよく、このようなものとしては、例えばn−ブチル基、イソブチル基、sec−ブチル基、tert−ブチル基、各種ヘキシル基、各種オクチル基、各種デシル基、各種ドデシル基、各種テトラデシル基、各種ヘキサデシル基、各種オクタデシル基、各種イコシル基、シクロペンチル基、シクロヘキシル基、オレイル基、リノレイル基などが挙げられる。
また、前記炭素数6〜24のアリール基及び炭素数7〜24のアリールアルキル基は、その芳香環上にアルキル基などの置換基が1個以上導入されていてもよく、このようなものとしては、例えばフェニル基、トリル基、キシリル基、ナフチル基、ブチルフェニル基、オクチルフェニル基、ノニルフェニル基、ベンジル基、メチルベンジル基、ブチルベンジル基、フェネチル基、メチルフェネチル基、ブチルフェネチル基などが挙げられる。
The alkyl group having 4 to 24 carbon atoms and the alkenyl group having 4 to 24 carbon atoms may be linear, branched or cyclic, and examples thereof include an n-butyl group, Isobutyl group, sec-butyl group, tert-butyl group, various hexyl groups, various octyl groups, various decyl groups, various dodecyl groups, various tetradecyl groups, various hexadecyl groups, various octadecyl groups, various icosyl groups, cyclopentyl groups, cyclohexyl groups Oleyl group, linoleyl group and the like.
The aryl group having 6 to 24 carbon atoms and the arylalkyl group having 7 to 24 carbon atoms may have one or more substituents such as an alkyl group introduced on the aromatic ring. Is, for example, phenyl group, tolyl group, xylyl group, naphthyl group, butylphenyl group, octylphenyl group, nonylphenyl group, benzyl group, methylbenzyl group, butylbenzyl group, phenethyl group, methylphenethyl group, butylphenethyl group, etc. Can be mentioned.
本実施形態において、(D)成分である有機モリブデン化合物は、一種を単独で用いてもよく、二種以上を組み合わせて用いてもよい。
また、前記(D)成分である有機モリブデン化合物の含有量は、ギヤ油組成物全量基準、モリブデン原子換算で100質量ppm以上300質量ppm以下であり、好ましくは130質量ppm以上200質量ppm以下、より好ましくは150質量ppm以上180質量ppm以下である。含有量が100質量ppm未満では、境界潤滑条件における摩擦係数の低減化が困難であり、300質量ppmを超えると、酸化安定性及び貯蔵安定性が悪化する。
In this embodiment, the organomolybdenum compound that is the component (D) may be used alone or in combination of two or more.
The content of the organomolybdenum compound as the component (D) is 100 mass ppm or more and 300 mass ppm or less, preferably 130 mass ppm or more and 200 mass ppm or less, in terms of the total amount of gear oil composition, converted to molybdenum atoms. More preferably, it is 150 mass ppm or more and 180 mass ppm or less. If the content is less than 100 mass ppm, it is difficult to reduce the coefficient of friction under boundary lubrication conditions, and if it exceeds 300 mass ppm, the oxidation stability and storage stability deteriorate.
((E)成分)
本実施形態における(E)成分であるリン含有化合物は、リン酸エステル系化合物、亜リン酸エステル系化合物、チオリン酸エステル系化合物及びチオ亜リン酸エステル系化合物から選ばれる、炭素数2〜24の炭化水素基を有するリン含有化合物である。
なお、本実施形態においては、リン酸含有化合物としてZnDTPは使用しない。
((E) component)
The phosphorus-containing compound that is the component (E) in this embodiment is a C2-C24 compound selected from a phosphate ester compound, a phosphite ester compound, a thiophosphate ester compound, and a thiophosphite ester compound. It is a phosphorus containing compound which has the following hydrocarbon group.
In this embodiment, ZnDTP is not used as the phosphoric acid-containing compound.
前記リン酸エステル系化合物としては、例えば一般式(III)で表されるリン酸トリエステルまたは酸性リン酸エステル化合物が挙げられる。
(R5O)mP(=O)(OH)3-m ・・・(III)
上記一般式(III)中、R5は、炭素数2〜24の炭化水素基を示し、mは1、2または3である。mが2または3の場合、R5Oは、同一であっても異なってもよい。
Examples of the phosphate ester compounds include phosphate triesters or acidic phosphate compounds represented by the general formula (III).
(R 5 O) m P (═O) (OH) 3-m (III)
In the general formula (III), R 5 represents a hydrocarbon group having 2 to 24 carbon atoms, and m is 1, 2 or 3. When m is 2 or 3, R 5 O may be the same or different.
前記R5で示される炭素数2〜24の炭化水素基としては、炭素数2〜24のアルキル基及びアルケニル基、炭素数6〜24のアリール基、炭素数7〜24のアラルキル基などを挙げることができる。
上記アルキル基及びアルケニル基は直鎖状、分岐状、環状のいずれであってもよく、その例としては、エチル基、n−プロピル基、イソプロピル基、n−ブチル基、イソブチル基,sec−ブチル基、tert−ブチル基、各種ペンチル基、各種ヘキシル基、各種オクチル基、各種デシル基、各種ドデシル基、各種テトラデシル基、各種ヘキサデシル基、各種オクタデシル基、各種ノナデシル基、各種イコシル基、各種ヘンイコシル基、各種ドコシル基、各種トリコシル基、各種テトラコシル基、シクロペンチル基、シクロヘキシル基、アリル基、プロペニル基、各種ブテニル基、各種ヘキセニル基、各種オクテニル基、各種デセニル基、各種ドデセニル基、各種テトラデセニル基、各種ヘキサデセニル基、各種オクタデセニル基、各種ノナデセニル基、各種イコセニル基、各種ヘンイコセニル基、各種ドコセニル基、各種トリコセニル基、各種テトラコセニル基、シクロペンテニル基、シクロヘキセニル基などが挙げられる。
Examples of the hydrocarbon group having 2 to 24 carbon atoms represented by R 5 include an alkyl group and alkenyl group having 2 to 24 carbon atoms, an aryl group having 6 to 24 carbon atoms, and an aralkyl group having 7 to 24 carbon atoms. be able to.
The alkyl group and alkenyl group may be linear, branched or cyclic, and examples thereof include ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl. Group, tert-butyl group, various pentyl groups, various hexyl groups, various octyl groups, various decyl groups, various dodecyl groups, various tetradecyl groups, various hexadecyl groups, various octadecyl groups, various nonadecyl groups, various icosyl groups, various heicosyl groups , Various docosyl groups, various tricosyl groups, various tetracosyl groups, cyclopentyl groups, cyclohexyl groups, allyl groups, propenyl groups, various butenyl groups, various hexenyl groups, various octenyl groups, various decenyl groups, various dodecenyl groups, various tetradecenyl groups, various Hexadecenyl group, various octadecenyl groups, various nona Seniru groups, various icosenyl groups, various henicosenyl group, various docosenyl groups, various tricosenyl group, various tetracosenyl group, cyclopentenyl group, cyclohexenyl group.
また、前記炭素数6〜24のアリール基としては、例えばフェニル基、トリル基、キシリル基、ナフチル基などが挙げられ、炭素数7〜24のアラルキル基としては、例えばベンジル基、フェネチル基、ナフチルメチル基、メチルベンジル基、メチルフェネチル基、メチルナフチルメチル基などが挙げられる。 Examples of the aryl group having 6 to 24 carbon atoms include phenyl group, tolyl group, xylyl group, and naphthyl group. Examples of the aralkyl group having 7 to 24 carbon atoms include benzyl group, phenethyl group, and naphthyl group. Examples thereof include a methyl group, a methylbenzyl group, a methylphenethyl group, and a methylnaphthylmethyl group.
前記一般式(III)で表されるリン酸エステル系化合物としては、炭素数2〜18の炭化水素基を有するものが好ましい。
具体的には、m=1の酸性リン酸モノエステルとして、モノエチルアシッドホスフェート、モノn−プロピルアシッドホスフェート、モノ−n−ブチルアシッドホスフェート、モノ−2−エチルヘキシルアシッドホスフェート、モノドデシルアシッドホスフェート(モノラウリルアシッドホスフェート)、モノテトラデシルアシッドホスフェート(モノミリスチルアシッドホスフェート)、モノパルミチルアシッドホスフェート、モノオクタデシルアシッドホスフェート(モノステアリルアシッドホスフェート)、モノ−9−オクタデセニルアシッドホスフェート(モノオレイルアシッドホスフェート)などが挙げられる。
また、m=2の酸性リン酸ジエステルとして、ジ−n−ブチルアシッドホスフェート、ジ−2−エチルヘキシルアシッドホスフェート、ジデシルアシッドホスフェート、ジドデシルアシッドホスフェート(ジラウリルアシッドホスフェート)、ジ(トリデシル)アシッドホスフェート、ジオクタデシルアシッドホスフェート(ジステアリルアシッドホスフェート)、ジ−9−オクタデセニルアシッドホスフェート(ジオレイルアシッドホスフェート)などが挙げられる。
さらに、m=3のリン酸トリエステルとして、トリアリールホスフェート、トリアルキルホスフェート等があり、例えば、ベンジルジフェニルホスフェート、トリフェニルホスフェート、トリクレジルホスフェート、トリブチルホスフェート、トリデシルホスフェート、エチルジブチルホスフェート、及びトリエチルフェニルホスフェートなどが挙げられる。
As the phosphoric ester compound represented by the general formula (III), those having a hydrocarbon group having 2 to 18 carbon atoms are preferable.
Specifically, as m = 1 acidic phosphoric acid monoester, monoethyl acid phosphate, mono n-propyl acid phosphate, mono-n-butyl acid phosphate, mono-2-ethylhexyl acid phosphate, monododecyl acid phosphate (mono Lauryl acid phosphate), monotetradecyl acid phosphate (monomyristyl acid phosphate), monopalmityl acid phosphate, monooctadecyl acid phosphate (monostearyl acid phosphate), mono-9-octadecenyl acid phosphate (monooleyl acid phosphate) Etc.
Further, as m = 2 acidic phosphoric acid diesters, di-n-butyl acid phosphate, di-2-ethylhexyl acid phosphate, didecyl acid phosphate, didodecyl acid phosphate (dilauryl acid phosphate), di (tridecyl) acid phosphate , Dioctadecyl acid phosphate (distearyl acid phosphate), di-9-octadecenyl acid phosphate (dioleyl acid phosphate), and the like.
Furthermore, m = 3 phosphoric acid triesters include triaryl phosphates, trialkyl phosphates, etc., such as benzyl diphenyl phosphate, triphenyl phosphate, tricresyl phosphate, tributyl phosphate, tridecyl phosphate, ethyl dibutyl phosphate, and Examples include triethylphenyl phosphate.
前記亜リン酸エステル系化合物としては、例えば一般式(IV)や(V)で表される亜リン酸トリエステルまたは酸性亜リン酸エステル化合物が挙げられる。 Examples of the phosphite compound include phosphite triesters and acidic phosphite compounds represented by general formulas (IV) and (V).
上記式中、R6は、炭素数2〜24の炭化水素基を示し、(V)式中のnは1または2である。nが2の場合、複数のR6Oは、同一であっても異なってもよい。
また前記一般式(IV)および(V)において、R6で示される炭素数2〜24の炭化水素基としては、前記一般式(III)において、R5で示されものと同じものを挙げることができる。
In the above formula, R 6 represents a hydrocarbon group having 2 to 24 carbon atoms, and n in the formula (V) is 1 or 2. When n is 2, the plurality of R 6 Os may be the same or different.
In the general formulas (IV) and (V), examples of the hydrocarbon group having 2 to 24 carbon atoms represented by R 6 include the same groups as those represented by R 5 in the general formula (III). Can do.
前記一般式(IV)で表される亜リン酸エステル系化合物としては、炭素数2〜18の炭化水素基を有するものが好ましい。
上記亜リン酸トリエステルとしては、例えば、トリフェニルホスファイト、トリエチルホスファイト、トリイソオクチルホスファイト、トリス2−エチルヘキシルホスファイト、トリイソデシルホスファイト、トリストリデシルホスファイト、トリオレイルホスファイトなどが挙げられる。
また、酸性亜リン酸エステルとしては、例えば、ジ−n−ブチルハイドロジェンホスファイト、ジ−2−エチルヘキシルハイドロジェンホスファイト、ジデシルハイドロジェンホスファイト、ジドデシルハイドロジェンホスファイト(ジラウリルハイドロジェンホスファイト)、ジオクタデシルハイドロジェンホスファイト(ジステアリルハイドロジェンホスファイト)、ジ−9−オクタデセニルハイドロジェンホスファイト(ジオレイルハイドロジェンホスファイト)、ジフェニルハイドロジェンホスファイトなどが挙げられる。
As the phosphite compound represented by the general formula (IV), those having a hydrocarbon group having 2 to 18 carbon atoms are preferable.
Examples of the phosphorous acid triester include triphenyl phosphite, triethyl phosphite, triisooctyl phosphite, tris 2-ethylhexyl phosphite, triisodecyl phosphite, tristridecyl phosphite, trioleyl phosphite and the like. Is mentioned.
Examples of acidic phosphites include di-n-butyl hydrogen phosphite, di-2-ethylhexyl hydrogen phosphite, didecyl hydrogen phosphite, didodecyl hydrogen phosphite (dilauryl hydrogen). Phosphite), dioctadecyl hydrogen phosphite (distearyl hydrogen phosphite), di-9-octadecenyl hydrogen phosphite (dioleyl hydrogen phosphite), diphenyl hydrogen phosphite and the like.
前記チオリン酸エステル系化合物としては、例えば一般式(VI)で表されるチオリン酸トリエステルまたは酸性チオリン酸エステル化合物が挙げられる。 Examples of the thiophosphate ester compound include a thiophosphate triester represented by the general formula (VI) or an acidic thiophosphate ester compound.
上記式中、R7〜R9は、水素原子または炭素数2〜24の炭化水素基を示し、少なくとも1つは炭化水素基である。X1〜X4は酸素原子または硫黄原子を示し、少なくとも1つは硫黄原子である。
具体的な化合物としては、モノブチルチオホスフェート、モノオクチルチオホスフェート、モノラウリルチオホスフェート、ジブチルチオホスフェート、ジオクチルチオホスフェート、ジラウリルチオホスフェート、ジフェニルチオホスフェート、トリブチルチオホスフェート、トリオクチルチオホスフェート、トリフェニルチオホスフェート、トリラウリルチオホスフェート、ジプロピルジチオホスフェート、モノプロピオジチオホスフェートなどが挙げられる。
In said formula, R < 7 > -R < 9 > shows a hydrogen atom or a C2-C24 hydrocarbon group, and at least 1 is a hydrocarbon group. X 1 to X 4 represent an oxygen atom or a sulfur atom, and at least one is a sulfur atom.
Specific compounds include monobutyl thiophosphate, monooctyl thiophosphate, monolauryl thiophosphate, dibutyl thiophosphate, dioctyl thiophosphate, dilauryl thiophosphate, diphenyl thiophosphate, tributyl thiophosphate, trioctyl thiophosphate, triphenyl Examples thereof include thiophosphate, trilauryl thiophosphate, dipropyldithiophosphate, monopropiodithiophosphate and the like.
前記チオ亜リン酸エステル系化合物としては、例えば一般式(VII)で表されるチオ亜リン酸トリエステルまたは酸性チオ亜リン酸エステル化合物が挙げられる。 Examples of the thiophosphite compound include a thiophosphite triester or an acidic thiophosphite compound represented by the general formula (VII).
上記式中、R10〜R12は、水素原子または炭素数2〜24の炭化水素基を示し、少なくとも1つは炭化水素基である。X5〜X7は酸素原子または硫黄原子を示し、少なくとも1つは硫黄原子である。
具体的な化合物としては、モノブチルチオホスファイト、モノオクチルチオホスファイト、モノラウリルチオホスファイト、ジブチルチオホスファイト、ジオクチルチオホスファイト、ジラウリルチオホスファイト、ジフェニルチオホスフェート、トリブチルチオホスファイト、トリオクチルチオホスファイト、トリフェニルチオホスファイト、トリラウリルチオホスファイト、トリブチルトリチオホスファイト、トリ(2−エチルヘキシル)チオホスファイトなどが挙げられる。
In said formula, R < 10 > -R < 12 > shows a hydrogen atom or a C2-C24 hydrocarbon group, and at least 1 is a hydrocarbon group. X 5 to X 7 represents an oxygen atom or a sulfur atom, at least one is a sulfur atom.
Specific compounds include monobutyl thiophosphite, monooctyl thiophosphite, monolauryl thiophosphite, dibutyl thiophosphite, dioctyl thiophosphite, dilauryl thiophosphite, diphenyl thiophosphate, tributyl thiophosphite, Examples include trioctyl thiophosphite, triphenyl thiophosphite, trilauryl thiophosphite, tributyl trithiophosphite, tri (2-ethylhexyl) thiophosphite, and the like.
本実施形態においては、前記リン酸エステル系化合物を1種以上用いてもよく、前記亜リン酸エステル系化合物を1種以上用いてもよく、前記チオリン酸エステル系化合物を1種以上用いてもよく、前記チオ亜リン酸エステル系化合物を1種以上用いてもよく、あるいはこれらのリン含有化合物を組み合わせて用いてもよい。さらにこれらのリン含有化合物のアミン塩を用いてもよい。
これらのリン含有化合物の中で、好ましいものとして、リン酸エステル系化合物やチオリン酸エステル系化合物が好ましく、具体的には、ジプロピルジチオホスフェート、モノプロピルジチオホスフェート、トリデシルフォスフェート、トリクレジルホスフェートなどが挙げられる。
In the present embodiment, one or more of the phosphoric acid ester compounds may be used, one or more of the phosphorous acid ester compounds may be used, and one or more of the thiophosphoric acid ester compounds may be used. It is also possible to use one or more of the thiophosphite compounds, or a combination of these phosphorus-containing compounds. Further, amine salts of these phosphorus-containing compounds may be used.
Among these phosphorus-containing compounds, preferred are phosphoric acid ester compounds and thiophosphoric acid ester compounds, specifically, dipropyldithiophosphate, monopropyldithiophosphate, tridecylphosphate, tricresyl. Examples include phosphate.
本実施形態において、前記(E)成分であるリン含有化合物の含有量は、ギヤ油組成物全量基準、リン原子換算で0.15質量%以上0.2質量%以下であり、好ましくは0.16質量%以上0.19質量%以下である。含有量が0.15質量%未満のときは、境界潤滑条件における摩擦係数の低減化が困難であり、また極圧性向上効果が得られにくい。一方、0.2質量%を超えると組成物の安定性が低下し、沈殿が生じ易くなる。 In the present embodiment, the content of the phosphorus-containing compound as the component (E) is 0.15% by mass or more and 0.2% by mass or less in terms of phosphorus atom based on the total amount of the gear oil composition, and preferably is 0.00. It is 16 mass% or more and 0.19 mass% or less. When the content is less than 0.15% by mass, it is difficult to reduce the coefficient of friction under boundary lubrication conditions, and it is difficult to obtain the extreme pressure improvement effect. On the other hand, if it exceeds 0.2% by mass, the stability of the composition is lowered and precipitation is likely to occur.
さらに、本実施形態のギヤ油組成物においては、組成物中の硫黄原子とリン原子との質量比(S/P)が8以上11以下である。一般的に硫黄含有化合物やリン含有化合物は極圧剤等の潤滑油添加剤として用いられるが、本実施形態は、(E)成分であるリン含有化合物と(D)成分である有機モリブデン化合物との組み合わせによる効果を特別に利用するものであり、これにより境界潤滑条件における摩擦係数の低減化を達成するため省燃費性に寄与する。また、極圧性も非常に良好となる。
前記組成物中の硫黄原子とリン原子との質量比(S/P)は8.5以上10.5以下であることが好ましい。
Furthermore, in the gear oil composition of the present embodiment, the mass ratio (S / P) of sulfur atoms and phosphorus atoms in the composition is 8 or more and 11 or less. In general, a sulfur-containing compound or a phosphorus-containing compound is used as a lubricating oil additive such as an extreme pressure agent. In this embodiment, the phosphorus-containing compound as the component (E) and the organic molybdenum compound as the component (D) The effect of the combination is specially used, and this contributes to fuel savings in order to achieve a reduction in the coefficient of friction under boundary lubrication conditions. In addition, extreme pressure is very good.
The mass ratio (S / P) between sulfur atoms and phosphorus atoms in the composition is preferably 8.5 or more and 10.5 or less.
上記の硫黄原子とリン原子との質量比はこの効果を得るための範囲であり、8未満のときは耐焼付き性が悪化するなど、極圧性向上効果が得られにくい。一方、11を超えると8未満のときと同様な不具合が生じるとともに、組成物の安定性が低下し沈殿が生じ易くなる。潤滑油添加剤としては、ギヤ油添加剤パッケージとして、硫黄系極圧剤とリン系極圧剤とを組合せたものが市販されているが、本実施形態においては、上記の規定を満たす限りこれらの添加剤パッケージを使用してもよい。 The mass ratio of the above sulfur atom and phosphorus atom is a range for obtaining this effect, and when it is less than 8, it is difficult to obtain the effect of improving extreme pressure, such as deterioration of seizure resistance. On the other hand, when it exceeds 11, problems similar to those when it is less than 8 occur, and the stability of the composition decreases and precipitation tends to occur. As a lubricating oil additive, a gear oil additive package in which a sulfur-based extreme pressure agent and a phosphorus-based extreme pressure agent are combined is commercially available. The additive package may be used.
本実施形態のギヤ組成物は、上記のように、動粘度、境界潤滑条件における摩擦係数、トラクション係数に注目し、省燃費性の向上を図ったものであり、さらに特定の添加剤の使用や、特定の組み合わせの利用により、極圧性、耐摩耗性、疲労寿命特性を向上させたものである。このため、本実施形態のギヤ油組成物は、一般によく用いられている添加剤であるZnDTP(ジチオリン酸亜鉛)を主な添加剤として用いる場合に比較して、格段に耐焼付き性が向上する。 As described above, the gear composition of the present embodiment focuses on the kinematic viscosity, the friction coefficient under boundary lubrication conditions, and the traction coefficient to improve fuel efficiency. By using a specific combination, extreme pressure properties, wear resistance, and fatigue life characteristics are improved. For this reason, the gear oil composition of the present embodiment has significantly improved seizure resistance compared to the case where ZnDTP (zinc dithiophosphate), which is a commonly used additive, is used as a main additive. .
本実施形態のギヤ油組成物においては、本実施形態の目的に反しない範囲で、適宜その他の添加剤を配合することができる。
そのような添加剤としては、例えば、酸化防止剤、無灰系分散剤、金属系清浄剤、粘度指数向上剤、流動点降下剤、金属不活性化剤、防錆剤、消泡剤などが挙げられる。
In the gear oil composition of the present embodiment, other additives can be appropriately blended without departing from the object of the present embodiment.
Examples of such additives include antioxidants, ashless dispersants, metal detergents, viscosity index improvers, pour point depressants, metal deactivators, rust inhibitors, and antifoaming agents. Can be mentioned.
前記酸化防止剤としては、例えば、フェノール系酸化防止剤、アミン系酸化防止剤、硫黄系酸化防止剤等が挙げられる。
フェノール系酸化防止剤としては、例えば、4,4’−メチレンビス(2,6−ジ−t−ブチルフェノール)、4,4’−ビス(2,6−ジ−t−ブチルフェノール)、4,4’−ビス(2−メチル−6−t−ブチルフェノール)、2,2’−メチレンビス(4−エチル−6−t−ブチルフェノール)、2,2’−メチレンビス(4−メチル−6−t−ブチルフェノール)、4,4’−ブチリデンビス(3−メチル−6−t−ブチルフェノール)、4,4’−イソプロピリデンビス(2,6−ジ−t−ブチルフェノール)、2,2’−メチレンビス(4−メチル−6−ノニルフェノール)、2,2’−イソブチリデンビス(4,6−ジメチルフェノール)、2,2’−メチレンビス(4−メチル−6−シクロヘキシルフェノール)、2,6−ジ−t−ブチル−4−メチルフェノール、2,6−ジ−t−ブチル−4−エチルフェノール、2,4−ジメチル−6−t−ブチルフェノール、2,6−ジ−t−アミル−p−クレゾール、2,6−ジ−t−ブチル−4−(N,N’−ジメチルアミノメチルフェノール)、4,4’−チオビス(2−メチル−6−t−ブチルフェノール)、4,4’−チオビス(3−メチル−6−t−ブチルフェノール)、2,2’−チオビス(4−メチル−6−t−ブチルフェノール)、ビス(3−メチル−4−ヒドロキシ−5−t−ブチルベンジル)スルフィド、ビス(3,5−ジ−t−ブチル−4−ヒドロキシベンジル)スルフィド、n−オクチル−3−(4−ヒドロキシ−3,5−ジ−t−ブチルフェニル)プロピオネート、n−オクタデシル−3−(4−ヒドロキシ−3,5−ジ−t−ブチルフェニル)プロピオネート、2,2’−チオ[ジエチル−ビス−3−(3,5−ジ−t−ブチル−4−ヒドロキシフェニル)プロピオネート]などが挙げられる。これらの中で、特にビスフェノール系及びエステル基含有フェノール系のものが好適である。
Examples of the antioxidant include phenol-based antioxidants, amine-based antioxidants, sulfur-based antioxidants, and the like.
Examples of phenolic antioxidants include 4,4′-methylenebis (2,6-di-t-butylphenol), 4,4′-bis (2,6-di-t-butylphenol), and 4,4 ′. -Bis (2-methyl-6-tert-butylphenol), 2,2'-methylenebis (4-ethyl-6-tert-butylphenol), 2,2'-methylenebis (4-methyl-6-tert-butylphenol), 4,4′-butylidenebis (3-methyl-6-tert-butylphenol), 4,4′-isopropylidenebis (2,6-di-tert-butylphenol), 2,2′-methylenebis (4-methyl-6) -Nonylphenol), 2,2'-isobutylidenebis (4,6-dimethylphenol), 2,2'-methylenebis (4-methyl-6-cyclohexylphenol), 2,6-di-t-butyl -4-methylphenol, 2,6-di-t-butyl-4-ethylphenol, 2,4-dimethyl-6-t-butylphenol, 2,6-di-t-amyl-p-cresol, 2,6 -Di-t-butyl-4- (N, N'-dimethylaminomethylphenol), 4,4'-thiobis (2-methyl-6-tert-butylphenol), 4,4'-thiobis (3-methyl- 6-t-butylphenol), 2,2′-thiobis (4-methyl-6-tert-butylphenol), bis (3-methyl-4-hydroxy-5-tert-butylbenzyl) sulfide, bis (3,5- Di-t-butyl-4-hydroxybenzyl) sulfide, n-octyl-3- (4-hydroxy-3,5-di-t-butylphenyl) propionate, n-octadecyl-3- (4-hydroxy-3, 5-di-t-butylphenyl) propionate, 2,2′-thio [diethyl-bis-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate] and the like. Among these, bisphenol-based and ester group-containing phenol-based ones are particularly preferable.
また、アミン系酸化防止剤としては、例えば、モノオクチルジフェニルアミン、モノノニルジフェニルアミンなどのモノアルキルジフェニルアミン系;4,4’−ジブチルジフェニルアミン、4,4’−ジペンチルジフェニルアミン、4,4’−ジヘキシルジフェニルアミン、4,4’−ジヘプチルジフェニルアミン、4,4’−ジオクチルジフェニルアミン、4,4’−ジノニルジフェニルアミンなどのジアルキルジフェニルアミン系;テトラブチルジフェニルアミン、テトラヘキシルジフェニルアミン、テトラオクチルジフェニルアミン、テトラノニルジフェニルアミンなどのポリアルキルジフェニルアミン系;及びナフチルアミン系のもの、具体的には、α−ナフチルアミン、フェニル−α−ナフチルアミン、更にはブチルフェニル−α−ナフチルアミン、ペンチルフェニル−α−ナフチルアミン、ヘキシルフェニル−α−ナフチルアミン、ヘプチルフェニル−α−ナフチルアミン、オクチルフェニル−α−ナフチルアミン、ノニルフェニル−α−ナフチルアミンなどのアルキル置換フェニル−α−ナフチルアミンなどが挙げられる。これらの中で、ジアルキルジフェニルアミン系及びナフチルアミン系のものが好適である。 Examples of amine antioxidants include monoalkyl diphenylamines such as monooctyl diphenylamine and monononyl diphenylamine; 4,4′-dibutyldiphenylamine, 4,4′-dipentyldiphenylamine, 4,4′-dihexyldiphenylamine, Dialkyldiphenylamines such as 4,4′-diheptyldiphenylamine, 4,4′-dioctyldiphenylamine, and 4,4′-dinonyldiphenylamine; polyalkyls such as tetrabutyldiphenylamine, tetrahexyldiphenylamine, tetraoctyldiphenylamine, and tetranonyldiphenylamine Diphenylamine type; and naphthylamine type, specifically α-naphthylamine, phenyl-α-naphthylamine, and butylphenyl-α Naphthylamine, pentylphenyl -α- naphthylamine, hexylphenyl -α- naphthylamine, heptylphenyl -α- naphthylamine, octylphenyl -α- naphthylamine, alkyl-substituted phenyl -α- naphthylamine, such as nonylphenyl -α- naphthylamine. Of these, those of dialkyldiphenylamine type and naphthylamine type are preferred.
硫黄系酸化防止剤としては、例えばフェノチアジン、ペンタエリスリトール−テトラキス−(3−ラウリルチオプロピオネート)、ジドデシルサルファイド、ジオクタデシルサルファイド、ジドデシルチオジプロピオネート、ジオクタデシルチオジプロピオネート、ジミリスチルチオジプロピオネート、ドデシルオクタデシルチオジプロピオネート、2−メルカプトベンゾイミダゾールなどが挙げられる。 Examples of the sulfur-based antioxidant include phenothiazine, pentaerythritol-tetrakis- (3-laurylthiopropionate), didodecyl sulfide, dioctadecyl sulfide, didodecylthiodipropionate, dioctadecylthiodipropionate, dimyristyl. Examples include thiodipropionate, dodecyl octadecyl thiodipropionate, and 2-mercaptobenzimidazole.
酸化防止剤は、一種を単独で用いてもよく、二種以上を混合して用いてもよい。例えば、酸化安定性の効果の観点から、フェノール系酸化防止剤一種又は二種以上とアミン系酸化防止剤一種又は二種以上との混合物が好ましい。
酸化防止剤の配合量は、ギヤ油組成物全量基準で、通常0.1質量%以上5質量%以下が好ましく、0.1質量%以上3質量%以下がより好ましい。
An antioxidant may be used individually by 1 type, and 2 or more types may be mixed and used for it. For example, from the viewpoint of the effect of oxidation stability, a mixture of one or more phenolic antioxidants and one or more amine antioxidants is preferred.
The blending amount of the antioxidant is usually preferably 0.1% by mass or more and 5% by mass or less, more preferably 0.1% by mass or more and 3% by mass or less, based on the total amount of the gear oil composition.
無灰系分散剤としては、例えばコハク酸イミド類、ホウ素含有コハク酸イミド類、ベンジルアミン類、ホウ素含有ベンジルアミン類、コハク酸エステル類、脂肪酸あるいはコハク酸で代表される一価又は二価カルボン酸アミド類などが挙げられる。
また、金属系清浄剤としては、例えば、カルシウムなどのアルカリ土類金属の中性金属スルホネート、中性金属フェネート、中性金属サリチレート、中性金属ホスホネート、塩基性金属スルホネート、塩基性金属フェネート、塩基性金属サリチレート、過塩基性(例えば、全塩基価が200〜700mgKOH/g)金属スルホネート、過塩基性金属サリチレート、過塩基性金属フェネートなどが挙げられる。
これらの無灰系分散剤や金属系清浄剤の配合量は、ギヤ油組成物全量基準で、0.1質量%以上20質量%以下が好ましく、より好ましくは0.5質量%以上10質量%以下である。
Examples of the ashless dispersant include succinimides, boron-containing succinimides, benzylamines, boron-containing benzylamines, succinic acid esters, monovalent or divalent carboxylic acids represented by fatty acids or succinic acid. And acid amides.
Examples of the metal detergent include neutral metal sulfonates, neutral metal phenates, neutral metal salicylates, neutral metal phosphonates, basic metal sulfonates, basic metal phenates, and bases of alkaline earth metals such as calcium. Metal salicylate, overbased (for example, total base number is 200 to 700 mgKOH / g) metal sulfonate, overbased metal salicylate, overbased metal phenate and the like.
The blending amount of these ashless dispersant and metal detergent is preferably 0.1% by mass or more and 20% by mass or less, more preferably 0.5% by mass or more and 10% by mass based on the total amount of the gear oil composition. It is as follows.
粘度指数向上剤としては、例えば、ポリメタクリレート、分散型ポリメタクリレート、オレフィン系共重合体(例えば、エチレン−プロピレン共重合体など)、分散型オレフィン系共重合体、スチレン系共重合体(例えば、スチレン−ジエン共重合体、スチレン−イソプレン共重合体など)などが挙げられる。
粘度指数向上剤の配合量は、配合効果の点から、ギヤ油組成物全量基準で、0.5質量%以上15質量%以下程度が好ましく、より好ましくは1質量%以上10質量%以下である。
As the viscosity index improver, for example, polymethacrylate, dispersed polymethacrylate, olefin copolymer (for example, ethylene-propylene copolymer), dispersed olefin copolymer, styrene copolymer (for example, Styrene-diene copolymer, styrene-isoprene copolymer, etc.).
The blending amount of the viscosity index improver is preferably about 0.5% by mass or more and 15% by mass or less, more preferably 1% by mass or more and 10% by mass or less based on the total amount of the gear oil composition from the viewpoint of the blending effect. .
流動点降下剤としては、例えば、重量平均分子量が5,000以上50,000以下程度のポリメタクリレートなどが挙げられる。
流動点降下剤の配合量は、配合効果の点から、ギヤ油組成物全量基準で、0.1質量%以上2質量%以下程度が好ましく、より好ましくは0.1質量%以上1質量%以下である。
Examples of the pour point depressant include polymethacrylate having a weight average molecular weight of about 5,000 to 50,000.
The blending amount of the pour point depressant is preferably about 0.1% by mass or more and 2% by mass or less, more preferably 0.1% by mass or more and 1% by mass or less, based on the total amount of the gear oil composition, from the viewpoint of blending effect. It is.
金属不活性化剤としては、ベンゾトリアゾール系、トリルトリアゾール系、チアジアゾール系、及びイミダゾール系化合物等が挙げられる。
金属不活性剤の配合量は、ギヤ油組成物全量基準で、0.01質量%以上3質量%以下が好ましく、より好ましくは0.01質量%以上1質量%以下である。
Examples of the metal deactivator include benzotriazole, tolyltriazole, thiadiazole, and imidazole compounds.
The compounding amount of the metal deactivator is preferably 0.01% by mass or more and 3% by mass or less, more preferably 0.01% by mass or more and 1% by mass or less, based on the total amount of the gear oil composition.
防錆剤としては、石油スルホネート、アルキルベンゼンスルホネート、ジノニルナフタレンスルホネート、アルケニルコハク酸エステル、多価アルコールエステル等が挙げられる。
これら防錆剤の配合量は、配合効果の点から、ギヤ油組成物全量基準で、0.01質量%以上1質量%以下程度が好ましく、より好ましくは0.05質量%以上0.5質量%以下である。
消泡剤としては、シリコーン油、フルオロシリコーン油及びフルオロアルキルエーテル等が挙げられ、この配合量は消泡効果及び経済性のバランスなどの点から、ギヤ油組成物全量基準で、0.0005質量%以上0.5質量%以下が好ましく、より好ましくは0.01質量%以上0.2質量%以下である。
Examples of the rust preventive include petroleum sulfonate, alkylbenzene sulfonate, dinonylnaphthalene sulfonate, alkenyl succinic acid ester, and polyhydric alcohol ester.
The blending amount of these rust preventives is preferably about 0.01% by mass or more and 1% by mass or less, more preferably 0.05% by mass or more and 0.5% by mass based on the total amount of the gear oil composition from the viewpoint of the blending effect. % Or less.
Examples of the antifoaming agent include silicone oil, fluorosilicone oil, and fluoroalkyl ether. The blending amount is 0.0005 mass based on the total amount of the gear oil composition from the viewpoint of balance between the defoaming effect and economy. % To 0.5% by mass, more preferably 0.01% to 0.2% by mass.
本実施形態のギヤ油組成物は、極圧性、耐摩耗性、疲労寿命特性に優れ、かつ省燃費性に優れるギヤ油組成物であり、例えば自動車用ギヤ油、工業用ギヤ油等として好適に用いられるが、特に自動車のデファレンシャルギヤの潤滑に好ましく用いられる。 The gear oil composition of the present embodiment is a gear oil composition having excellent extreme pressure properties, wear resistance, fatigue life characteristics, and excellent fuel economy, and is suitable as, for example, automobile gear oil, industrial gear oil, etc. Although used, it is particularly preferably used for lubricating a differential gear of an automobile.
次に、本発明を実施例により更に詳細に説明するが、本発明はこれらの例によって何ら限定されるものではない。 EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited at all by these examples.
<実施例1〜3及び比較例1〜13>
第1表に示す配合量(質量%)でギヤ油組成物を調製した。その性状を第2表に示す。なお成分の詳細は以下のとおりである。
・鉱油1:100℃における動粘度4.47mm2/s、粘度指数(VI)127の鉱油
・鉱油2:100℃における動粘度10.89mm2/s、粘度指数(VI)107の鉱油
・鉱油3:100℃における動粘度6.32mm2/s、粘度指数(VI)133の鉱油
・OCP(オレフィンコポリマー):エチレンとプロピレンとの共重合体(組成比(質量%):40/60)、数平均分子量7,700
・PMA:ポリメタクリレート、数平均分子量21,000
・硫黄含有化合物:ジ−t−ブチルジスルフィドとジ−t−ブチルトリスルフィドの混合物(質量比7:3)
・有機モリブデン化合物:炭素数8のアルキル基を含有するモリブデンジチオカーバメート
・リン含有化合物:フォスフェート化合物の混合物(ジプロピルジチオホスフェート、モノプロピルジチオホスフェート、トリデシルホスフェート、トリクレジルホスフェート)
・その他添加剤:分散剤(ポリブテニルコハク酸イミド)、摩擦調整剤(オレイン酸アミド)
<Examples 1-3 and Comparative Examples 1-13>
A gear oil composition was prepared with a blending amount (mass%) shown in Table 1. The properties are shown in Table 2. Details of the components are as follows.
Mineral oil 1: Mineral oil with a kinematic viscosity at 100 ° C. of 4.47 mm 2 / s and viscosity index (VI) 127 Mineral oil 2: Mineral oil with a kinematic viscosity at 100 ° C. of 10.89 mm 2 / s and viscosity index (VI) 107 3: Mineral oil / OCP (olefin copolymer) having a kinematic viscosity at 100 ° C. of 6.32 mm 2 / s and a viscosity index (VI) of 133: copolymer of ethylene and propylene (composition ratio (mass%): 40/60), Number average molecular weight 7,700
PMA: polymethacrylate, number average molecular weight 21,000
Sulfur-containing compound: a mixture of di-t-butyl disulfide and di-t-butyl trisulfide (mass ratio 7: 3)
Organic molybdenum compound: Molybdenum dithiocarbamate containing an alkyl group having 8 carbon atoms Phosphorus-containing compound: Mixture of phosphate compounds (dipropyl dithiophosphate, monopropyl dithiophosphate, tridecyl phosphate, tricresyl phosphate)
・ Other additives: Dispersant (polybutenyl succinimide), friction modifier (oleic amide)
前記鉱油、基油およびギヤ油組成物の性状の測定は以下の方法で行った。
(1)動粘度
JIS K 2283に準拠し、40℃、100℃における動粘度を測定した。
(2)粘度指数(VI)
JIS K 2283に準拠して測定した。
(3)硫黄原子、リン原子、モリブデン原子含有量
ICP発光分析法により求めた。
The properties of the mineral oil, base oil and gear oil composition were measured by the following method.
(1) Kinematic viscosity Based on JIS K2283, the kinematic viscosity in 40 degreeC and 100 degreeC was measured.
(2) Viscosity index (VI)
The measurement was performed according to JIS K 2283.
(3) Content of sulfur atom, phosphorus atom, molybdenum atom It was determined by ICP emission analysis.
これらのギヤ油組成物について、以下に示す方法により各種試験を行い、その物性を評価した。評価結果を第3表に示す。なお、比較例10では、有機モリブデン化合物(モリブデンジチオカーバメート)の添加量が多く沈殿が発生したため、疲労寿命特性試験等を行うことができなかった。 These gear oil compositions were subjected to various tests by the following methods to evaluate their physical properties. The evaluation results are shown in Table 3. In Comparative Example 10, since the amount of the organic molybdenum compound (molybdenum dithiocarbamate) added was large and precipitation occurred, a fatigue life characteristic test or the like could not be performed.
〔疲労寿命特性試験〕
疲労寿命特性は、試験機としてニードルベアリング耐久試験機(株式会社森試験機製作所社製)を用いたニードルベアリング疲労試験にて行った。テストピースとしては、以下の3つの型番のものを用いた。
・型番:WS−81105(上軌道面)、NTN社製
・型番:FNTA2542(ニードル)、NSK社製
・型番:FTRE2542(下軌道面)、NSK社製
[Fatigue life characteristics test]
The fatigue life characteristics were measured by a needle bearing fatigue test using a needle bearing endurance tester (manufactured by Mori Test Instruments Co., Ltd.) as a tester. As test pieces, the following three model numbers were used.
・ Model number: WS-81105 (upper raceway surface), manufactured by NTN ・ Model number: FNTA2542 (needle), manufactured by NSK ・ Model number: FTRE2542 (lower track surface), manufactured by NSK
試験はニードル本数30本のところを12本で実施した。その他の試験条件は、回転数:1000rpm、油温:90℃、油量:120ml、荷重:600kgf、面圧(Pmax):1.92GPa、転がり速度:1.05m/sとした。評価結果を第2表に示す。
なお表中、L10とは累積破損確率が10%になるときの総主軸回転数(疲労寿命)を、L50とは累積破損確率が50%になるときの総主軸回転数(疲労寿命)を各々指す。また、mはワイブルスロープを示す。
The test was carried out with 12 needles with 30 needles. Other test conditions were as follows: rotation speed: 1000 rpm, oil temperature: 90 ° C., oil amount: 120 ml, load: 600 kgf, surface pressure (Pmax): 1.92 GPa, rolling speed: 1.05 m / s. The evaluation results are shown in Table 2.
In the table, L10 is the total spindle speed (fatigue life) when the cumulative failure probability is 10%, and L50 is the total spindle speed (fatigue life) when the cumulative failure probability is 50%. Point to. M represents a Weibull slope.
〔トラクション係数〕
MTMトラクション計測器を用いて、トラクション係数を測定した。
測定条件は以下のとおりである。(負荷荷重:20N、油温:100℃、スライド・ロールレシオ:1〜90%、平均回転速度2m/sでSRRが20%の値を確認した)
[Traction coefficient]
The traction coefficient was measured using an MTM traction measuring instrument.
The measurement conditions are as follows. (Load load: 20 N, oil temperature: 100 ° C., slide-roll ratio: 1 to 90%, SRR was confirmed to be 20% at an average rotation speed of 2 m / s)
〔高速チムケン試験〕
JISK2519に準拠し、焼付きを生じない最大荷重を求めた。回転数は3600rpm、油温は40℃であり、ステップ荷重で最初の荷重を5LBSからスタートし、焼付いた場合は2.5LBS低下させ、焼付かない場合は、2.5LBS荷重を上げ、この試験を繰り返して焼付かない合格荷重を求めた。尚、合格荷重は錘の値である。
[High-speed Timken test]
Based on JISK2519, the maximum load that does not cause seizure was determined. The number of revolutions is 3600 rpm, the oil temperature is 40 ° C., the initial load is started from 5 LBS with a step load. If seizure occurs, the load decreases by 2.5 LBS. If seizure does not occur, the 2.5 LBS load is increased. An acceptable load that was not repeatedly seized was determined. The acceptable load is the weight value.
〔貯蔵安定性〕
ギヤ油組成物を調製し、1日後の状態を以下の基準により観察した。
○:曇り、沈殿なし。
△:曇りあり、沈殿なし。
×:沈殿あり。
[Storage stability]
A gear oil composition was prepared, and the state after one day was observed according to the following criteria.
○: Cloudy, no precipitation.
Δ: Cloudy, no precipitation
X: There is precipitation.
表3に示すように、ギヤ油組成物中の各成分が本発明の要件を満たす実施例では、耐焼付き性や低トラクション係数を維持しつつ、良好な疲労寿命特性が得られた。一方、前記要件を満たさない比較例では、いずれかの特性において問題が発生した。 As shown in Table 3, in Examples where each component in the gear oil composition satisfies the requirements of the present invention, good fatigue life characteristics were obtained while maintaining seizure resistance and a low traction coefficient. On the other hand, in the comparative example not satisfying the above requirements, a problem occurred in any of the characteristics.
本発明のギヤ油組成物は、低粘度化を達成したにも関わらず、極圧性(耐焼付き性)に優れ、さらに疲労寿命特性、耐摩耗性、省燃費性に優れるギヤ油組成物である。 The gear oil composition of the present invention is a gear oil composition that is excellent in extreme pressure properties (seizure resistance) and excellent in fatigue life characteristics, wear resistance, and fuel economy despite achieving low viscosity. .
Claims (2)
(B)数平均分子量が2,000以上8,000以下のエチレン−αオレフィン共重合体と、
(C)下記一般式(I)で表される硫黄含有化合物と、
R1−Sx−R2 ・・・(I)
〔一般式(I)中、R1およびR2は、それぞれ独立に炭素数4乃至16の炭化水素基を表し、xは2乃至4の整数を表す。〕
(D)有機モリブデン化合物と、
(E)リン酸エステル系化合物、亜リン酸エステル系化合物、チオリン酸エステル系化合物及びチオ亜リン酸エステル系化合物から選ばれる、炭素数2〜24の炭化水素基を有するリン含有化合物と、
を配合してなり、
組成物全量基準で、(B)成分の含有量が2質量%以上10質量%以下、(C)成分の含有量が硫黄原子換算で1.2質量%以上2.0質量%以下、(D)成分の含有量がモリブデン原子換算で100質量ppm以上300質量ppm以下、(E)成分の含有量がリン原子換算で0.15質量%以上0.2質量%以下であって、かつ組成物中の硫黄原子とリン原子との質量比(S/P)が8以上11以下であるギヤ油組成物。 (A) Mineral oil having a kinematic viscosity at 100 ° C. of 2 mm 2 / s to 20 mm 2 / s and a viscosity index of 125 to 140 is 80% by mass or more based on the total amount of base oil, and the viscosity index is 130 to 140 A base oil,
(B) an ethylene-α-olefin copolymer having a number average molecular weight of 2,000 to 8,000,
(C) a sulfur-containing compound represented by the following general formula (I):
R 1 -S x -R 2 (I)
[In General Formula (I), R 1 and R 2 each independently represent a hydrocarbon group having 4 to 16 carbon atoms, and x represents an integer of 2 to 4. ]
(D) an organic molybdenum compound;
(E) a phosphorus-containing compound having a hydrocarbon group having 2 to 24 carbon atoms selected from a phosphoric ester compound, a phosphite compound, a thiophosphate compound, and a thiophosphite compound;
And
Based on the total amount of the composition, the content of the component (B) is 2% by mass or more and 10% by mass or less, the content of the component (C) is 1.2% by mass or more and 2.0% by mass or less in terms of sulfur atom, (D The component content is 100 mass ppm or more and 300 mass ppm or less in terms of molybdenum atom, the content of the component (E) is 0.15 mass% or more and 0.2 mass% or less in terms of phosphorus atom, and the composition A gear oil composition having a mass ratio (S / P) of sulfur atom to phosphorus atom of 8 or more and 11 or less.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009153632A JP5337598B2 (en) | 2009-06-29 | 2009-06-29 | Gear oil composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009153632A JP5337598B2 (en) | 2009-06-29 | 2009-06-29 | Gear oil composition |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011006635A JP2011006635A (en) | 2011-01-13 |
JP5337598B2 true JP5337598B2 (en) | 2013-11-06 |
Family
ID=43563647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009153632A Active JP5337598B2 (en) | 2009-06-29 | 2009-06-29 | Gear oil composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5337598B2 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5961098B2 (en) * | 2012-11-14 | 2016-08-02 | 出光興産株式会社 | Gear oil composition for manual transmission |
JP6059531B2 (en) * | 2012-12-28 | 2017-01-11 | Jxエネルギー株式会社 | Lubricating oil composition |
TW201516140A (en) * | 2013-10-18 | 2015-05-01 | Jx Nippon Oil & Energy Corp | Gear lubricant oil composition |
WO2016136873A1 (en) * | 2015-02-27 | 2016-09-01 | Jxエネルギー株式会社 | Lubricating oil composition for final reduction gear |
JP6661435B2 (en) | 2016-03-23 | 2020-03-11 | 出光興産株式会社 | Lubricating oil composition and lubricating method |
JP7318164B2 (en) * | 2016-12-14 | 2023-08-01 | 出光興産株式会社 | Lubricating oil composition, lubricating method and gear |
JP7296711B2 (en) * | 2018-10-23 | 2023-06-23 | 出光興産株式会社 | Lubricating oil composition, mechanical device provided with lubricating oil composition, and method for producing lubricating oil composition |
CN114174480B (en) * | 2019-07-26 | 2022-08-23 | 株式会社Adeka | Lubricating oil additive and lubricating oil composition containing same |
JP7492426B2 (en) | 2020-10-07 | 2024-05-29 | Eneos株式会社 | Lubricating Oil Composition |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2555284B2 (en) * | 1987-05-14 | 1996-11-20 | 出光興産株式会社 | Lubricant composition with improved temperature characteristics |
JP4094118B2 (en) * | 1998-05-21 | 2008-06-04 | 出光興産株式会社 | Gear oil composition |
JP5025842B2 (en) * | 1999-05-19 | 2012-09-12 | 昭和シェル石油株式会社 | Gear oil composition |
JP2007270062A (en) * | 2006-03-31 | 2007-10-18 | Nippon Oil Corp | Lubricant base oil, lubricating oil composition and method for producing lubricant base oil |
JP5633997B2 (en) * | 2006-07-06 | 2014-12-03 | Jx日鉱日石エネルギー株式会社 | Lubricating base oil and lubricating oil 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 |
JP5502356B2 (en) * | 2009-03-27 | 2014-05-28 | 出光興産株式会社 | Gear oil composition |
-
2009
- 2009-06-29 JP JP2009153632A patent/JP5337598B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
JP2011006635A (en) | 2011-01-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5502356B2 (en) | Gear oil composition | |
JP5337598B2 (en) | Gear oil composition | |
JP5350583B2 (en) | Lubricating oil composition and method for improving metal fatigue of automobile transmission using the same | |
CN109415646B (en) | Lubricating composition and engine oil composition containing same | |
JP4805536B2 (en) | Transmission oil composition for automobiles | |
US11124732B2 (en) | Lubricant composition | |
US11193080B2 (en) | Lubricating oil composition | |
US10800991B2 (en) | Lubricating oil composition, and precision reduction gear using same | |
EP2246412A1 (en) | Lubricant composition and continuously variable transmission | |
US20110077183A1 (en) | Lubricant composition | |
JP2009292997A (en) | Base oil and lubricant composition | |
JP7454947B2 (en) | lubricating oil composition | |
US10647940B2 (en) | Lubricating oil composition, and precision reduction gear using same | |
JP6747666B2 (en) | Lubricating oil composition for sliding bearing, sliding bearing lubricating method using the same, and sliding bearing | |
JP5905615B2 (en) | Lubricating oil composition | |
JP5756353B2 (en) | Lubricating oil composition | |
JP7493373B2 (en) | Lubricating Oil Composition | |
JP2023047696A (en) | Lubricant composition | |
WO2023282134A1 (en) | Lubricant composition | |
JP2015174983A (en) | Lubricant composition for speed change gear | |
JP2022022703A (en) | Lubricant composition | |
JP2013001885A (en) | Lubricating oil composition | |
JP2008231193A (en) | Lubricant composition for internal combustion engine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20111114 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20130710 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20130723 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20130805 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 5337598 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |