JP6677511B2 - ディーゼルエンジン用潤滑油組成物 - Google Patents
ディーゼルエンジン用潤滑油組成物 Download PDFInfo
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- JP6677511B2 JP6677511B2 JP2015257263A JP2015257263A JP6677511B2 JP 6677511 B2 JP6677511 B2 JP 6677511B2 JP 2015257263 A JP2015257263 A JP 2015257263A JP 2015257263 A JP2015257263 A JP 2015257263A JP 6677511 B2 JP6677511 B2 JP 6677511B2
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- viscosity
- index improver
- viscosity index
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- boron
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- 239000000203 mixture Substances 0.000 title claims description 54
- 239000010687 lubricating oil Substances 0.000 title claims description 49
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 39
- 229910052796 boron Inorganic materials 0.000 claims description 39
- 229920000193 polymethacrylate Polymers 0.000 claims description 35
- 239000002199 base oil Substances 0.000 claims description 27
- 239000003599 detergent Substances 0.000 claims description 26
- 239000002270 dispersing agent Substances 0.000 claims description 25
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 150000002148 esters Chemical class 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- -1 alkaline earth metal salts Chemical class 0.000 description 19
- 239000000446 fuel Substances 0.000 description 15
- 229920000642 polymer Polymers 0.000 description 15
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 12
- 125000000217 alkyl group Chemical group 0.000 description 9
- 239000003921 oil Substances 0.000 description 9
- 239000002585 base Substances 0.000 description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 239000011701 zinc Substances 0.000 description 7
- 150000001342 alkaline earth metals Chemical class 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 150000001412 amines Chemical class 0.000 description 5
- 239000002518 antifoaming agent Substances 0.000 description 5
- 239000003963 antioxidant agent Substances 0.000 description 5
- 238000010790 dilution Methods 0.000 description 5
- 239000012895 dilution Substances 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 4
- 239000004327 boric acid Substances 0.000 description 4
- 229960002645 boric acid Drugs 0.000 description 4
- 235000010338 boric acid Nutrition 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 239000010705 motor oil Substances 0.000 description 4
- VLCLHFYFMCKBRP-UHFFFAOYSA-N tricalcium;diborate Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]B([O-])[O-].[O-]B([O-])[O-] VLCLHFYFMCKBRP-UHFFFAOYSA-N 0.000 description 4
- 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 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000006078 metal deactivator Substances 0.000 description 3
- 239000002480 mineral oil Substances 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229960002317 succinimide Drugs 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 2
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 description 2
- ICKWICRCANNIBI-UHFFFAOYSA-N 2,4-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=C(O)C(C(C)(C)C)=C1 ICKWICRCANNIBI-UHFFFAOYSA-N 0.000 description 2
- JZODKRWQWUWGCD-UHFFFAOYSA-N 2,5-di-tert-butylbenzene-1,4-diol Chemical compound CC(C)(C)C1=CC(O)=C(C(C)(C)C)C=C1O JZODKRWQWUWGCD-UHFFFAOYSA-N 0.000 description 2
- 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 2
- GJYCVCVHRSWLNY-UHFFFAOYSA-N 2-butylphenol Chemical compound CCCCC1=CC=CC=C1O GJYCVCVHRSWLNY-UHFFFAOYSA-N 0.000 description 2
- LBLYYCQCTBFVLH-UHFFFAOYSA-M 2-methylbenzenesulfonate Chemical compound CC1=CC=CC=C1S([O-])(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-M 0.000 description 2
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- ZDMLGWPLXFTSNJ-UHFFFAOYSA-N CCCCCCCCCCCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCCCCCCCCCCC.CCCCCCCCCCCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCCCCCCCCCCC.[Zn+2].[Zn+2].[Zn+2] Chemical compound CCCCCCCCCCCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCCCCCCCCCCC.CCCCCCCCCCCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCCCCCCCCCCC.[Zn+2].[Zn+2].[Zn+2] ZDMLGWPLXFTSNJ-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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical class C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- WGQKYBSKWIADBV-UHFFFAOYSA-N benzylamine Chemical compound NCC1=CC=CC=C1 WGQKYBSKWIADBV-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 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 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002530 phenolic antioxidant Substances 0.000 description 2
- 229950000688 phenothiazine Drugs 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920001083 polybutene Polymers 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
- 238000010998 test method Methods 0.000 description 2
- BCMCBBGGLRIHSE-UHFFFAOYSA-N 1,3-benzoxazole Chemical class C1=CC=C2OC=NC2=C1 BCMCBBGGLRIHSE-UHFFFAOYSA-N 0.000 description 1
- PWNBRRGFUVBTQG-UHFFFAOYSA-N 1-n,4-n-di(propan-2-yl)benzene-1,4-diamine Chemical compound CC(C)NC1=CC=C(NC(C)C)C=C1 PWNBRRGFUVBTQG-UHFFFAOYSA-N 0.000 description 1
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-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
- BGCSUUSPRCDKBQ-UHFFFAOYSA-N 2,4,8,10-tetraoxaspiro[5.5]undecane Chemical compound C1OCOCC21COCOC2 BGCSUUSPRCDKBQ-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
- LKALLEFLBKHPTQ-UHFFFAOYSA-N 2,6-bis[(3-tert-butyl-2-hydroxy-5-methylphenyl)methyl]-4-methylphenol Chemical compound OC=1C(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=CC(C)=CC=1CC1=CC(C)=CC(C(C)(C)C)=C1O LKALLEFLBKHPTQ-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
- SLUKQUGVTITNSY-UHFFFAOYSA-N 2,6-di-tert-butyl-4-methoxyphenol Chemical compound COC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SLUKQUGVTITNSY-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
- YQQQXXUABFURLN-UHFFFAOYSA-N 2,6-ditert-butyl-4-ethoxyphenol Chemical compound CCOC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 YQQQXXUABFURLN-UHFFFAOYSA-N 0.000 description 1
- QSRJVOOOWGXUDY-UHFFFAOYSA-N 2-[2-[2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]ethoxy]ethoxy]ethyl 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CCC(=O)OCCOCCOCCOC(=O)CCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 QSRJVOOOWGXUDY-UHFFFAOYSA-N 0.000 description 1
- WJQOZHYUIDYNHM-UHFFFAOYSA-N 2-tert-Butylphenol Chemical compound CC(C)(C)C1=CC=CC=C1O WJQOZHYUIDYNHM-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
- IMOYOUMVYICGCA-UHFFFAOYSA-N 2-tert-butyl-4-hydroxyanisole Chemical compound COC1=CC=C(O)C=C1C(C)(C)C IMOYOUMVYICGCA-UHFFFAOYSA-N 0.000 description 1
- IKEHOXWJQXIQAG-UHFFFAOYSA-N 2-tert-butyl-4-methylphenol Chemical compound CC1=CC=C(O)C(C(C)(C)C)=C1 IKEHOXWJQXIQAG-UHFFFAOYSA-N 0.000 description 1
- XOUQAVYLRNOXDO-UHFFFAOYSA-N 2-tert-butyl-5-methylphenol Chemical compound CC1=CC=C(C(C)(C)C)C(O)=C1 XOUQAVYLRNOXDO-UHFFFAOYSA-N 0.000 description 1
- STGFANHLXUILNY-UHFFFAOYSA-N 3,7-dioctyl-10h-phenothiazine Chemical compound C1=C(CCCCCCCC)C=C2SC3=CC(CCCCCCCC)=CC=C3NC2=C1 STGFANHLXUILNY-UHFFFAOYSA-N 0.000 description 1
- XMIIGOLPHOKFCH-UHFFFAOYSA-N 3-phenylpropionic acid Chemical compound OC(=O)CCC1=CC=CC=C1 XMIIGOLPHOKFCH-UHFFFAOYSA-N 0.000 description 1
- MRBKEAMVRSLQPH-UHFFFAOYSA-N 3-tert-butyl-4-hydroxyanisole Chemical compound COC1=CC=C(O)C(C(C)(C)C)=C1 MRBKEAMVRSLQPH-UHFFFAOYSA-N 0.000 description 1
- MDWVSAYEQPLWMX-UHFFFAOYSA-N 4,4'-Methylenebis(2,6-di-tert-butylphenol) Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 MDWVSAYEQPLWMX-UHFFFAOYSA-N 0.000 description 1
- JHCCIUPVUCVKIJ-UHFFFAOYSA-N 4,6-ditert-butyl-2-(3,5-ditert-butyl-2,6-dihydroxyphenyl)sulfanylbenzene-1,3-diol Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=C(O)C(SC=2C(=C(C=C(C=2O)C(C)(C)C)C(C)(C)C)O)=C1O JHCCIUPVUCVKIJ-UHFFFAOYSA-N 0.000 description 1
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 description 1
- ZVVFVKJZNVSANF-UHFFFAOYSA-N 6-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]hexyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCCCCCCOC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 ZVVFVKJZNVSANF-UHFFFAOYSA-N 0.000 description 1
- PHDDJBNPBVCZCR-UHFFFAOYSA-N 8-[(3,5-ditert-butyl-4-hydroxyphenyl)methylsulfanyl]octyl acetate Chemical compound CC(=O)OCCCCCCCCSCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 PHDDJBNPBVCZCR-UHFFFAOYSA-N 0.000 description 1
- 229910015900 BF3 Inorganic materials 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
- ZZGHZLUTIKGEDL-UHFFFAOYSA-M C(CC(C)C)SP(=S)(OCCC(C)C)[O-].[Zn+] Chemical compound C(CC(C)C)SP(=S)(OCCC(C)C)[O-].[Zn+] ZZGHZLUTIKGEDL-UHFFFAOYSA-M 0.000 description 1
- AOICMAWCVGIYLG-UHFFFAOYSA-N C(CC)C=1C(=C(C=CC1)S(=P([S-])([O-])[O-])C)CCC.[Zn+2].C(CC)C=1C(=C(C=CC1)S(=P([S-])([O-])[O-])C)CCC.[Zn+2].[Zn+2] Chemical compound C(CC)C=1C(=C(C=CC1)S(=P([S-])([O-])[O-])C)CCC.[Zn+2].C(CC)C=1C(=C(C=CC1)S(=P([S-])([O-])[O-])C)CCC.[Zn+2].[Zn+2] AOICMAWCVGIYLG-UHFFFAOYSA-N 0.000 description 1
- ISRPMTWTAKYJJI-UHFFFAOYSA-N CCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCC.CCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCC.[Zn+2].[Zn+2].[Zn+2] Chemical compound CCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCC.CCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCC.[Zn+2].[Zn+2].[Zn+2] ISRPMTWTAKYJJI-UHFFFAOYSA-N 0.000 description 1
- PIVYVTHVOWAPPZ-UHFFFAOYSA-N CCCCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCCCC.CCCCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCCCC.[Zn+2].[Zn+2].[Zn+2] Chemical compound CCCCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCCCC.CCCCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCCCC.[Zn+2].[Zn+2].[Zn+2] PIVYVTHVOWAPPZ-UHFFFAOYSA-N 0.000 description 1
- JTIWXHAPFSNQID-UHFFFAOYSA-N CCCCCCCCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCCCCCCCC.CCCCCCCCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCCCCCCCC.[Zn+2].[Zn+2].[Zn+2] Chemical compound CCCCCCCCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCCCCCCCC.CCCCCCCCCC1=CC=CC([S+]=P([O-])([O-])[S-])=C1CCCCCCCCC.[Zn+2].[Zn+2].[Zn+2] JTIWXHAPFSNQID-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000006683 Mannich reaction Methods 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- UTGQNNCQYDRXCH-UHFFFAOYSA-N N,N'-diphenyl-1,4-phenylenediamine Chemical compound C=1C=C(NC=2C=CC=CC=2)C=CC=1NC1=CC=CC=C1 UTGQNNCQYDRXCH-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
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- CGRTZESQZZGAAU-UHFFFAOYSA-N [2-[3-[1-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]-2-methylpropan-2-yl]-2,4,8,10-tetraoxaspiro[5.5]undecan-9-yl]-2-methylpropyl] 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CCC(=O)OCC(C)(C)C2OCC3(CO2)COC(OC3)C(C)(C)COC(=O)CCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 CGRTZESQZZGAAU-UHFFFAOYSA-N 0.000 description 1
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- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
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- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
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- MHJCZOMOUCUAOI-UHFFFAOYSA-N n-tert-butyl-n-phenylaniline Chemical compound C=1C=CC=CC=1N(C(C)(C)C)C1=CC=CC=C1 MHJCZOMOUCUAOI-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
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- 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
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920001281 polyalkylene Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- ZNCAMSISVWKWHL-UHFFFAOYSA-L zinc;butoxy-butylsulfanyl-oxido-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CCCCOP([O-])(=S)SCCCC.CCCCOP([O-])(=S)SCCCC ZNCAMSISVWKWHL-UHFFFAOYSA-L 0.000 description 1
- ZBDJNBFTEIUHPK-UHFFFAOYSA-L zinc;dihexoxy-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].CCCCCCOP([S-])(=S)OCCCCCC.CCCCCCOP([S-])(=S)OCCCCCC ZBDJNBFTEIUHPK-UHFFFAOYSA-L 0.000 description 1
- AEXHGRVJDVETQU-UHFFFAOYSA-L zinc;nonylsulfanyl-dioxido-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CCCCCCCCCSP([O-])([O-])=S AEXHGRVJDVETQU-UHFFFAOYSA-L 0.000 description 1
- GBEDXBRGRSPHRI-UHFFFAOYSA-L zinc;octoxy-octylsulfanyl-oxido-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CCCCCCCCOP([O-])(=S)SCCCCCCCC.CCCCCCCCOP([O-])(=S)SCCCCCCCC GBEDXBRGRSPHRI-UHFFFAOYSA-L 0.000 description 1
- HHMFJIHYTYQNJP-UHFFFAOYSA-L zinc;oxido-pentoxy-pentylsulfanyl-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CCCCCOP([O-])(=S)SCCCCC.CCCCCOP([O-])(=S)SCCCCC HHMFJIHYTYQNJP-UHFFFAOYSA-L 0.000 description 1
- LZVDFWITYZHIEU-UHFFFAOYSA-L zinc;oxido-propoxy-propylsulfanyl-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CCCOP([O-])(=S)SCCC.CCCOP([O-])(=S)SCCC LZVDFWITYZHIEU-UHFFFAOYSA-L 0.000 description 1
Classifications
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/044—Mixtures of base-materials and additives the additives being a mixture of non-macromolecular and macromolecular compounds
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
- C10M105/32—Esters
- C10M105/34—Esters of monocarboxylic acids
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- C10M109/00—Lubricating compositions characterised by the base-material being a compound of unknown or incompletely defined constitution
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- C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
- C10M143/10—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing aromatic monomer, e.g. styrene
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- C10M143/00—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
- C10M143/12—Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing conjugated diene
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- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
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- C10M145/14—Acrylate; Methacrylate
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- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
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- C10M2203/1025—Aliphatic fractions used as base material
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- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/022—Ethene
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- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
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- C10M2205/04—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing aromatic monomers, e.g. styrene
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- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/17—Fisher Tropsch reaction products
- C10M2205/173—Fisher Tropsch reaction products used as base material
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- C10M2207/282—Esters of (cyclo)aliphatic oolycarboxylic acids
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- C10M2207/28—Esters
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- C10N2020/02—Viscosity; Viscosity index
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- C10N2030/02—Pour-point; Viscosity index
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- C10N2030/04—Detergent property or dispersant property
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- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/54—Fuel economy
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/68—Shear stability
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/74—Noack Volatility
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- C10N2040/252—Diesel engines
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Description
a)100℃における動粘度が4.5〜5.5mm2/sのGTL基油と、
b)櫛形PMA(ポリメタクリレート)系粘度指数向上剤と、
c)ホウ素含有換算値(合計値)で組成物全量に対して0.025質量%以上のホウ素含有分散剤及び/又はホウ素含有清浄剤と
を含有し、
d)SAE J300規定で0W−30又は5W−30を満たす
ことを特徴とする、ディーゼルエンジン用潤滑油組成物である。
本発明(II)は、
e)非櫛形PMA(ポリメタクリレート)系粘度指数向上剤、SCP(スチレンジエンコポリマー)系粘度指数向上剤及び/又はOCP(オレフィンコポリマー)系粘度指数向上剤を含み、且つ、希釈剤抜きのポリマー量として、次の(1)〜(3)の少なくともいずれか一つを満たす、前記発明(I)のディーゼルエンジン用潤滑油組成物である。
(1)非櫛形PMA系粘度指数向上剤含有量/全体の粘度指数向上剤(重量平均分子量が5万以上となるポリマー)含有量:0.7以下
(2)OCP系粘度指数向上剤含有量/全体の粘度指数向上剤(重量平均分子量が5万以上となるポリマー)含有量:0.2以下
(3)SCP系粘度指数向上剤含有量/全体の粘度指数向上剤(重量平均分子量が5万以上となるポリマー)含有量:0.3以下
本発明(III)は、
f)次の粘度特性を満たす、前記発明(I)又は(II)のディーゼルエンジン用潤滑油組成物である。
(HTHS100℃粘度(capillary法)−HTHS100℃粘度(TBS法))/HTHS100℃粘度(TBS法):0.07〜0.15
本形態に係る潤滑油組成物は、基油としてGTL基油と、櫛形PMA系粘度指数向上剤と、ホウ素含有分散剤及び/又はホウ素含有清浄剤と、必要に応じてその他の成分と、を含有する。
本形態に係る潤滑油組成物の基油として、天然ガスの液体燃料化技術のフィッシャートロプッシュ法により合成されたGTL(ガストゥリキッド)の油が用いられる。このような基油を用いることで、本発明の系においては、酸化安定性を向上させると共に、蒸発損失を低減させることが可能となる。
本形態に係る潤滑油組成物は、清浄剤としてホウ素含有清浄剤を含んでいてもよい。ホウ素含有清浄剤としては、特に限定されないが、ホウ酸含有のアルカリ土類金属塩が挙げられ、より具体的には、ホウ酸化アルカリ土類金属アルキルサリシレート清浄剤やホウ酸化アルカリ土類金属アルキルトルエンスルホネート清浄剤が挙げられ、ホウ酸カルシウムアルキルトルエンスルホネートであることが好適である。なお、このようなホウ素含有清浄剤としては、公知のものを用いればよい(例えば、ホウ酸化アルカリ土類金属アルキルトルエンスルホネート清浄剤は、特開2008−297547に記載された方法に従って製造可能である)。
本形態に係る潤滑油組成物は、分散剤として、ホウ素含有分散剤を含んでいてもよい。ホウ素含有分散剤は、例えば、ポリブテニルコハク酸イミド系、ポリブテニルコハク酸アミド系、ベンジルアミン系、コハク酸エステル系等の分散剤がホウ素化されたものである。
本形態に係る潤滑油組成物に使用し得る耐摩耗性や極圧性を付与する耐摩耗剤としては、ジチオリン酸亜鉛(ZnDTP)が挙げられる。ZnDTPとしては、一般に、ジアルキルジチオリン酸亜鉛、ジアリールジチオリン酸亜鉛、アリールアルキルジチオリン酸亜鉛等が例示される。これらアルキル基は直鎖状でも分枝状でもよい。例えば、ジアルキルジチオリン酸亜鉛のアルキル基は、炭素数3〜22の第1級又は第2級のアルキル基、炭素数3〜18のアルキル基で置換されたアルキルアリール基を有するジアルキルジチオリン酸亜鉛が使用される。ジアルキルジチオリン酸亜鉛の具体例としては、ジプロピルジチオリン酸亜鉛、ジブチルジチオリン酸亜鉛、ジペンチルジチオリン酸亜鉛、ジヘキシルジチオリン酸亜鉛、ジイソペンチルジチオリン酸亜鉛、ジエチルヘキシルジチオリン酸亜鉛、ジオクチルジチオリン酸亜鉛、ジノニルジチオリン酸亜鉛、ジデシルジチオリン酸亜鉛、ジドデシルジチオリン酸亜鉛、ジプロピルフェニルジチオリン酸亜鉛、ジペンチルフェニルジチオリン酸亜鉛、ジプロピルメチルフェニルジチオリン酸亜鉛、ジノニルフェニルジチオリン酸亜鉛、ジドデシルフェニルジチオリン酸亜鉛、ジドデシルフェニルジチオリン酸亜鉛等が挙げられる。
本形態に係る潤滑油組成物に使用し得る金属不活性剤としては、ベンゾトリアゾール、アルキル−トルトリアゾール類等のベンゾトリアゾール誘導体、ベンゾイミダゾール類、トルイミダゾール類等のベンゾイミダゾール誘導体がある。また、トルインダゾール類等のインダゾール誘導体、ベンゾチアゾール類、トルゾチアゾール類等のベンゾチアゾール誘導体等が例示される。更に、ベンゾオキサゾール誘導体、チアジアゾール誘導体、トリアゾール誘導体等が挙げられる。
本形態に係る潤滑油組成物に使用し得る酸化防止剤としては、例えば、アミン系酸化防止剤、フェノール系酸化防止剤等が例示される。アミン系酸化防止剤としては、p,p’−ジオクチル−ジフェニルアミン(精工化学社製:ノンフレックスOD−3)、p,p’−ジ−α−メチルベンジル−ジフェニルアミン、N−p−ブチルフェニル−N−p’−オクチルフェニルアミン等のジアルキル−ジフェニルアミン類、モノ−t−ブチルジフェニルアミン、モノオクチルジフェニルアミン等のモノアルキルジフェニルアミン類、ジ(2,4−ジエチルフェニル)アミン、ジ(2−エチル−4−ノニルフェニル)アミン等のビス(ジアルキルフェニル)アミン類、オクチルフェニル−1−ナフチルアミン、N−t−ドデシルフェニル−1−ナフチルアミン等のアルキルフェニル−1−ナフチルアミン類、1−ナフチルアミン、フェニル−1−ナフチルアミン、フェニル−2−ナフチルアミン、N−ヘキシルフェニル−2−ナフチルアミン、N−オクチルフェニル−2−ナフチルアミン等のアリール−ナフチルアミン類、N,N’−ジイソプロピル−p−フェニレンジアミン、N,N’−ジフェニル−p−フェニレンジアミン等のフェニレンジアミン類、フェノチアジン(保土谷化学社製:Phenothiazine)、3,7−ジオクチルフェノチアジン等のフェノチアジン類等が挙げられる。フェノール系酸化防止剤としては、2−t−ブチルフェノール、2−t−ブチル−4−メチルフェノール、2−t−ブチル−5−メチルフェノール、2,4−ジ−t−ブチルフェノール、2,4−ジメチル−6−t−ブチルフェノール、2−t−ブチル−4−メトキシフェノール、3−t−ブチル−4−メトキシフェノール、2,5−ジ−t−ブチルヒドロキノン(川口化学社製:アンテージDBH)、2,6−ジ−t−ブチルフェノール、2,6−ジ−t−ブチル−4−メチルフェノール、2,6−ジ−t−ブチル−4−エチルフェノール等の2,6−ジ−t−ブチル−4−アルキルフェノール類、2,6−ジ−t−ブチル−4−メトキシフェノール、2,6−ジ−t−ブチル−4−エトキシフェノール等の2,6−ジ−t−ブチル−4−アルコキシフェノール類がある。また、3,5−ジ−t−ブチル−4−ヒドロキシベンジルメルカプト−オクチルアセテート、n−オクタデシル−3−(3,5−ジ−t−ブチル−4−ヒドロキシフェニル)プロピオネート(吉富製薬社製:ヨシノックスSS)、n−ドデシル−3−(3,5−ジ−t−ブチル−4−ヒドロキシフェニル)プロピオネート、2’−エチルヘキシル−3−(3,5−ジ−t−ブチル−4−ヒドロキシフェニル)プロピオネート、ベンゼンプロパン酸3,5−ビス(1,1−ジメチル−エチル)−4−ヒドロキシ−C7〜C9側鎖アルキルエステル(チバ・スペシャルティ・ケミカルズ社製:IrganoxL135)等のアルキル−3−(3,5−ジ−t−ブチル−4−ヒドロキシフェニル)プロピオネート類、2,6−ジ−t−ブチル−α−ジメチルアミノ−p−クレゾール、2,2’−メチレンビス(4−メチル−6−t−ブチルフェノール)(川口化学社製:アンテージW−400)、2,2’−メチレンビス(4−エチル−6−t−ブチルフェノール)(川口化学社製:アンテージW−500)等の2,2’−メチレンビス(4−アルキル−6−t−ブチルフェノール)類がある。更に、4,4’−ブチリデンビス(3−メチル−6−t−ブチルフェノール)(川口化学社製:アンテージW−300)、4,4’−メチレンビス(2,6−ジ−t−ブチルフェノール)(シェル・ジャパン社製:Ionox220AH)、4,4’−ビス(2,6−ジ−t−ブチルフェノール)、2,2−(ジ−p−ヒドロキシフェニル)プロパン(シェル・ジャパン社製:ビスフェノールA)、2,2−ビス(3,5−ジ−t−ブチル−4−ヒドロキシフェニル)プロパン、4,4’−シクロヘキシリデンビス(2,6−t−ブチルフェノール)、ヘキサメチレングリコールビス[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](チバ・スペシャルティ・ケミカルズ社製:IrganoxL109)、トリエチレングリコールビス[3−(3−t−ブチル−4−ヒドロキシ−5−メチルフェニル)プロピオネート](吉富製薬社製:トミノックス917)、2,2’−チオ−[ジエチル−3−(3,5−ジ−t−ブチル−4−ヒドロキシフェニル)プロピオネート](チバ・スペシャルティ・ケミカルズ社製:IrganoxL115)、3,9−ビス{1,1−ジメチル−2−[3−(3−t−ブチル−4−ヒドロキシ−5−メチルフェニル)プロピオニルオキシ]エチル}2,4,8,10−テトラオキサスピロ[5,5]ウンデカン(住友化学:スミライザーGA80)、4,4’−チオビス(3−メチル−6−t−ブチルフェノール)(川口化学社製:アンテージRC)、2,2’−チオビス(4,6−ジ−t−ブチル−レゾルシン)等のビスフェノール類がある。そして、テトラキス[メチレン−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]メタン(チバ・スペシャルティ・ケミカルズ社製:IrganoxL101)、1,1,3−トリス(2−メチル−4−ヒドロキシ−5−t−ブチルフェニル)ブタン(吉富製薬社製:ヨシノックス930)、1,3,5−トリメチル−2,4,6−トリス(3,5−ジ−t−ブチル−4−ヒドロキシベンジル)ベンゼン(シェル・ジャパン社製:Ionox330)、ビス−[3,3’−ビス−(4’−ヒドロキシ−3’−t−ブチルフェニル)ブチリックアシッド]グリコールエステル、2−(3’,5’−ジ−t−ブチル−4−ヒドロキシフェニル)メチル−4−(2”,4”−ジ−t−ブチル−3”−ヒドロキシフェニル)メチル−6−t−ブチルフェノール、2,6−ビス(2’−ヒドロキシ−3’−t−ブチル−5’−メチル−ベンジル)−4−メチルフェノール等のポリフェノール類、p−t−ブチルフェノールとホルムアルデヒドの縮合体、p−t−ブチルフェノールとアセトアルデヒドの縮合体等のフェノールアルデヒド縮合体等が挙げられる。
本形態に係る潤滑油組成物は、櫛形ポリメタクリレート系粘度指数向上剤を含む。櫛形ポリマーとは、ポリマー主鎖に対して複数の伸長した側鎖を櫛状に有するポリマーを表す。本形態に係る粘度指数向上剤は、これらの櫛形ポリマーの中で、櫛形ポリメタクリレート系のポリマーを粘度指数向上剤として含む。なお、本発明において、「粘度指数向上剤」とは、重量平均分子量が5万以上となるポリマーを示す。
本形態に係る潤滑油組成物に使用し得る消泡剤としては、例えば、ジメチルポリシロキサン、ジエチルシリケート、フルオロシリコーン等のオルガノシリケート類、ポリアルキルアクリレート等の非シリコーン系消泡剤が例示される。
(基油の量)
基油の含有量は、潤滑油組成物の全質量を基準として、60〜90質量%であることが好適であり、65〜90質量%であることがより好適であり、70〜85質量%の範囲であることが更に好適である。
粘度指数向上剤の含有量(全体の粘度指数向上剤含有量)は、特に限定されず、適宜変更可能であり、例えば、潤滑油組成物の全質量を基準として、0.05〜20質量%等とすればよい。以下、各粘度指数向上剤の好適な含有量について詳述する。
櫛形PMAの含有量は、特に限定されないが、潤滑油組成物の全質量を基準として、潤滑油組成物の全質量を基準として、1.0〜6.0質量%であることが好適であり、1.0〜5.0質量%であることがより好適であり、1.0〜4.0質量%の範囲であることが更に好適である。
非櫛形PMAの含有量は、非櫛形PMA含有量/全体の粘度指数向上剤含有量が、0.7以下であることが好適である。
OCPの含有量は、OCP含有量/全体の粘度指数向上剤含有量が、0.2以下であることが好適である。
SCPの含有量は、SCP含有量/全体の粘度指数向上剤含有量が、0.3以下であることが好適である。
ホウ素含有清浄剤及びホウ素含有分散剤の含有量は、所望の効果を得るために、ホウ素含有換算値(合計値)で組成物全量に対して0.025質量%以上とする必要がある。なお、上限値は特に限定されないが、例えば、0.1質量%以下(好適には、0.050質量%以下)等とすればよい。
本形態に係る潤滑油組成物に添加してもよい他の成分の好適添加量について説明する。まず、酸化防止剤の好適添加量は、単独又は複数組み合わせて、潤滑油組成物の全質量を基準として、0.01〜2質量%の範囲である。金属不活性剤の好適添加量は、単独又は複数組み合わせて、潤滑油組成物の全質量を基準として、0.01〜0.5質量%の範囲である。耐摩耗剤(例えばZnDTP)の好適添加量は、単独又は複数組み合わせて、潤滑油組成物の全質量を基準にリン(P)量として、例えば、0.01〜0.10質量%、より好ましくは0.05〜0.08質量%の範囲である。消泡剤の好適添加量は、単独又は複数組み合わせて、潤滑油組成物の全質量を基準として、例えば、0.0001〜0.01質量%の範囲である。金属系清浄剤の好適添加量は、単独又は複数組み合わせて、潤滑油組成物の全質量を基準として、例えば、金属量で0.05〜0.3質量%、より好ましくは0.1〜0.2質量%である。無灰分散剤の好適添加量は、単独又は複数組み合わせて、潤滑油組成物の全質量を基準として、例えば、0.01〜0.3質量%の窒素を提供する程度の量である。
(Capillary粘度/TBS粘度)
ここで、100℃でのHTHS粘度と燃費特性には優れた相関があると考えられている。また、HTHS粘度の測定法にも様々存在する。中でも、使用する粘度指数向上剤の種類により、Capillary法で測定したHTHS粘度とTBS法で測定した粘度で得られる粘度が異なる場合がある。そのような中で、以下の式1は値が大きいほど毛細管式粘度計を用いる方法(Capillary)で測定した粘度の方が大きく、回転粘度計を用いて測定(TBS)した粘度の方が小さく、その差が大きくなることを表す。その場合、クランクシャフト-ベアリング間のような回転粘度計に近い状態で摺動する部分で、オイルのせん断粘度が小さくなることを表す。つまり上記部位で粘性抵抗を低減し摩擦損失を低下することが可能と考えられる。一方、毛細管粘度計に近い状態でオイルがせん断を受ける部位では、高いせん断粘度を維持し十分な耐久性を維持することができる。
次に、実施例1〜8及び比較例1〜10に係る潤滑油組成物に関して、評価試験を行った。なお、実施例に係る潤滑油組成物に関しては、全て、5W−30を満たすことが確認された。
日本国内メーカー製造の4000ccのディーゼルエンジンを用いた台上燃費試験に基づき、燃費特性の評価を行った。運転条件は国土交通省10・15モードを参考にして設定した。測定時のギャラリー温度は90℃に設定した。なお、表2及び表3に示す結果はSAE粘度グレードで10W−30に分類される市販ディーゼルエンジン油を基準としたときの燃費改善率(%)を示したものである。本評価においては、燃費改善率(%)が1.0以上の場合、燃費特性を○とした。
ASTM D5800に基づいて、Noack揮発性(%)を測定した。本評価においては、Noack揮発性(%)が13.0以下の場合に、蒸発性を○とした。
日本石油学会規格JPI−5S−55−99「エンジン油−ホットチューブ試験法」に準拠して、ホットチューブ試験を実施した。試験条件は、試験温度290℃/300℃、試験時間16時間、試料油送り速度0.3ml/時間、空気流量10ml/時間に設定し、試験終了後のガラスチューブ変色部の色相評価(メリット評点)が7.0点以上の場合に、清浄性を○とした。
前述した方法に従って、[(Capillary粘度−TBS粘度)/TBS粘度]を算出した。
Claims (4)
- a)100℃における動粘度が4.5〜5.5mm2/sのGTL基油と、
b)櫛形PMA(ポリメタクリレート)系粘度指数向上剤と、
c)ホウ素含有分散剤及び/又はホウ素含有清浄剤と
を含有し、
d)ホウ素含有分散剤及び/又はホウ素含有清浄剤は、その合計の含有量が、ホウ素含有換算値で組成物全量に対して0.027質量%以上、0.1質量%以下であり、
e)SAE J300規定で0W−30又は5W−30を満たす
ことを特徴とする、ディーゼルエンジン用潤滑油組成物(但し、窒素量が、前記組成物の全質量を基準として、0.12質量%未満であるものを除く)。 - a)100℃における動粘度が4.5〜5.5mm2/sのGTL基油(エステルを除く)と、
b)櫛形PMA(ポリメタクリレート)系粘度指数向上剤と、
c)ホウ素含有分散剤及び/又はホウ素含有清浄剤と
を含有し、
d)ホウ素含有分散剤及び/又はホウ素含有清浄剤は、その合計の含有量が、ホウ素含有換算値で組成物全量に対して0.027質量%以上、0.1質量%以下であり、
e)SAE J300規定で0W−30又は5W−30を満たす
ことを特徴とする、ディーゼルエンジン用潤滑油組成物(但し、窒素量が、前記組成物の全質量を基準として、0.12質量%未満であるものを除く)。 - e)非櫛形PMA(ポリメタクリレート)系粘度指数向上剤、SCP(スチレンジエンコポリマー)系粘度指数向上剤及び/又はOCP(オレフィンコポリマー)系粘度指数向上剤を含み、且つ、次の(1)〜(3)の少なくともいずれか一つを満たす、請求項1又は2記載のディーゼルエンジン用潤滑油組成物。
(1)非櫛形PMA系粘度指数向上剤含有量/全体の粘度指数向上剤含有量:0.7以下
(2)OCP系粘度指数向上剤含有量/全体の粘度指数向上剤含有量:0.2以下
(3)SCP系粘度指数向上剤含有量/全体の粘度指数向上剤含有量:0.3以下 - f)次の粘度特性を満たす、請求項1〜3のいずれか一項記載のディーゼルエンジン用潤滑油組成物。
(HTHS100℃粘度(capillary法)−HTHS100℃粘度(TBS法))/HTHS100℃粘度(TBS法):0.07〜0.15
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PCT/EP2016/082719 WO2017114836A1 (en) | 2015-12-28 | 2016-12-27 | Lubricating oil composition for diesel engines |
RU2018127539A RU2732123C2 (ru) | 2015-12-28 | 2016-12-27 | Композиция смазочного масла для дизельного двигателя |
CN201680076501.5A CN108431188B (zh) | 2015-12-28 | 2016-12-27 | 用于柴油发动机的润滑油组合物 |
BR112018013130A BR112018013130A2 (pt) | 2015-12-28 | 2016-12-27 | composição de óleo lubrificante para motores a diesel |
EP16819121.1A EP3397740B1 (en) | 2015-12-28 | 2016-12-27 | Lubricating oil composition for diesel engines |
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