CN115279871A - Lubricating oil composition - Google Patents
Lubricating oil composition Download PDFInfo
- Publication number
- CN115279871A CN115279871A CN202180024788.8A CN202180024788A CN115279871A CN 115279871 A CN115279871 A CN 115279871A CN 202180024788 A CN202180024788 A CN 202180024788A CN 115279871 A CN115279871 A CN 115279871A
- Authority
- CN
- China
- Prior art keywords
- lubricating oil
- oil composition
- mass
- sodium
- content
- 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.)
- Pending
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 159
- 239000000203 mixture Substances 0.000 title claims abstract description 156
- 239000003599 detergent Substances 0.000 claims abstract description 70
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 69
- 239000011734 sodium Substances 0.000 claims abstract description 58
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 53
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000002199 base oil Substances 0.000 claims abstract description 39
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 38
- 239000011701 zinc Substances 0.000 claims abstract description 28
- 125000004436 sodium atom Chemical group 0.000 claims abstract description 19
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical group [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 23
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical group [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 21
- 101100208720 Homo sapiens USP5 gene Proteins 0.000 claims description 15
- 102100021017 Ubiquitin carboxyl-terminal hydrolase 5 Human genes 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000006866 deterioration Effects 0.000 abstract description 26
- -1 etc. Substances 0.000 description 38
- 229910052751 metal Inorganic materials 0.000 description 32
- 239000002184 metal Substances 0.000 description 32
- 230000000694 effects Effects 0.000 description 24
- 239000003921 oil Substances 0.000 description 24
- 229910052749 magnesium Inorganic materials 0.000 description 21
- 239000003795 chemical substances by application Substances 0.000 description 20
- 150000001875 compounds Chemical class 0.000 description 17
- 125000000217 alkyl group Chemical group 0.000 description 16
- 239000002253 acid Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 15
- 239000011777 magnesium Substances 0.000 description 13
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 13
- 239000011575 calcium Substances 0.000 description 12
- 229910052791 calcium Inorganic materials 0.000 description 12
- 125000004432 carbon atom Chemical group C* 0.000 description 12
- 229910019142 PO4 Inorganic materials 0.000 description 11
- 239000010452 phosphate Substances 0.000 description 11
- 239000002518 antifoaming agent Substances 0.000 description 10
- 239000003963 antioxidant agent Substances 0.000 description 10
- 239000000654 additive Substances 0.000 description 9
- 230000001747 exhibiting effect Effects 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 230000003078 antioxidant effect Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 7
- 238000011109 contamination Methods 0.000 description 6
- 239000002480 mineral oil Substances 0.000 description 6
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 5
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 230000000994 depressogenic effect Effects 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 239000003112 inhibitor Substances 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000004711 α-olefin Substances 0.000 description 4
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 125000002877 alkyl aryl group Chemical group 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 230000000415 inactivating effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 235000010446 mineral oil Nutrition 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 150000002894 organic compounds Chemical class 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 229920005862 polyol Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- ABBQHOQBGMUPJH-UHFFFAOYSA-M Sodium salicylate Chemical compound [Na+].OC1=CC=CC=C1C([O-])=O ABBQHOQBGMUPJH-UHFFFAOYSA-M 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 150000004996 alkyl benzenes Chemical class 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000010725 compressor oil Substances 0.000 description 2
- 239000010730 cutting oil Substances 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 239000012208 gear oil Substances 0.000 description 2
- 150000002430 hydrocarbons Chemical group 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000010721 machine oil Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 150000002902 organometallic compounds Chemical class 0.000 description 2
- 150000003014 phosphoric acid esters Chemical class 0.000 description 2
- 229920000193 polymethacrylate Polymers 0.000 description 2
- 229960001860 salicylate Drugs 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 2
- NESLWCLHZZISNB-UHFFFAOYSA-M sodium phenolate Chemical compound [Na+].[O-]C1=CC=CC=C1 NESLWCLHZZISNB-UHFFFAOYSA-M 0.000 description 2
- 229960004025 sodium salicylate Drugs 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 150000003464 sulfur compounds Chemical class 0.000 description 2
- 239000010723 turbine oil Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical class OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- RAADJDWNEAXLBL-UHFFFAOYSA-N 1,2-di(nonyl)naphthalene Chemical compound C1=CC=CC2=C(CCCCCCCCC)C(CCCCCCCCC)=CC=C21 RAADJDWNEAXLBL-UHFFFAOYSA-N 0.000 description 1
- 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
- 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
- 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
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical class CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 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
- MEIQSUIILRYXCS-UHFFFAOYSA-N C(CCC)C1=CC=C(C=C1)N(CCCCCCCC)C1=CC=CC=C1 Chemical compound C(CCC)C1=CC=C(C=C1)N(CCCCCCCC)C1=CC=CC=C1 MEIQSUIILRYXCS-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
- YNLGQWRNZWQQMD-UHFFFAOYSA-N C(CCCCCCCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCCCCCCC)CCCCCCCCC)CCCCCCCCC Chemical compound C(CCCCCCCC)C=1C(=C(C(=C(C=1)NC1=CC=CC=C1)CCCCCCCCC)CCCCCCCCC)CCCCCCCCC YNLGQWRNZWQQMD-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Chemical group CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- MQHWFIOJQSCFNM-UHFFFAOYSA-L Magnesium salicylate Chemical compound [Mg+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O MQHWFIOJQSCFNM-UHFFFAOYSA-L 0.000 description 1
- 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 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 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 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 229940077388 benzenesulfonate Drugs 0.000 description 1
- 150000001565 benzotriazoles Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- AVVIDTZRJBSXML-UHFFFAOYSA-L calcium;2-carboxyphenolate;dihydrate Chemical compound O.O.[Ca+2].OC1=CC=CC=C1C([O-])=O.OC1=CC=CC=C1C([O-])=O AVVIDTZRJBSXML-UHFFFAOYSA-L 0.000 description 1
- ZMRQTIAUOLVKOX-UHFFFAOYSA-L calcium;diphenoxide Chemical compound [Ca+2].[O-]C1=CC=CC=C1.[O-]C1=CC=CC=C1 ZMRQTIAUOLVKOX-UHFFFAOYSA-L 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 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 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000005456 glyceride group Chemical group 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 230000000937 inactivator Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229940072082 magnesium salicylate Drugs 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000005078 molybdenum compound Substances 0.000 description 1
- 150000002752 molybdenum compounds Chemical class 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 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
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- YCWSUKQGVSGXJO-NTUHNPAUSA-N nifuroxazide Chemical group C1=CC(O)=CC=C1C(=O)N\N=C\C1=CC=C([N+]([O-])=O)O1 YCWSUKQGVSGXJO-NTUHNPAUSA-N 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
- 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 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 125000004437 phosphorous atom Chemical group 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
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 150000003752 zinc compounds Chemical class 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/08—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium containing a sulfur-to-oxygen bond
- C10M135/10—Sulfonic acids or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
- C10M137/04—Phosphate esters
- C10M137/10—Thio derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M141/00—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential
- C10M141/10—Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups C10M125/00 - C10M139/00, each of these compounds being essential at least one of them being an organic phosphorus-containing compound
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/003—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/046—Overbasedsulfonic acid salts
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/02—Groups 1 or 11
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/04—Detergent property or dispersant property
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/52—Base number [TBN]
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/12—Gas-turbines
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/30—Refrigerators lubricants or compressors lubricants
Abstract
The present invention addresses the problem of providing a lubricating oil composition containing zinc dialkyldithiophosphate, wherein the lubricating oil composition has a gradual deterioration in hue over time. The problem is solved by preparing a lubricating oil composition containing a base oil (A), a zinc dialkyldithiophosphate (B) and a sodium detergent (C), wherein the zinc atom content is 100 to 2,000 mass ppm based on the total amount of the lubricating oil composition, and the sodium atom content is 5 to 1,000 mass ppm based on the total amount of the lubricating oil composition.
Description
Technical Field
The present invention relates to lubricating oil compositions.
Background
From the viewpoint of imparting antioxidant ability and anti-wear ability to a lubricating oil composition, etc., zinc dialkyldithiophosphates are widely used.
As described above, zinc dialkyldithiophosphates are excellent in that they can impart antioxidant ability, anti-wear ability, and the like to lubricating oil compositions, and on the other hand, they have a side that is likely to cause sludge generation by thermal oxidation and the like, and therefore, various methods for suppressing sludge derived from zinc dialkyldithiophosphates have been used.
For example, patent document 1 describes: in the industrial hydraulic fluid composition, an overbased metal salicylate is compounded for suppressing sludge derived from zinc dialkyldithiophosphate. In addition, it also describes: the metal component constituting the overbased metal salicylate is an alkaline earth metal such as calcium and magnesium, preferably calcium.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2016-089043.
Disclosure of Invention
Problems to be solved by the invention
However, the lubricating oil composition tends to deteriorate gradually with time and to deteriorate in hue (darken). Therefore, in order to easily grasp the deterioration state of the lubricating oil composition, a method of determining deterioration by using a hue change of the lubricating oil composition is widely used in the management of machines, equipment, and the like using the lubricating oil composition.
However, a lubricating oil composition containing zinc dialkyldithiophosphate tends to easily deteriorate in hue, and on the other hand, performance as a lubricating oil composition may be maintained even after deterioration in hue. Therefore, there is a problem that the deterioration state cannot be determined in a lump when only the hue change is used.
In the management of machines, facilities, and the like using the lubricating oil composition, the contamination state, the deposit occurrence state, and the like are often visually confirmed. However, if the hue of the lubricating oil composition deteriorates at an early stage, visibility of the contamination state, the deposit generation state, and the like of the lubricating oil composition deteriorates, and the contamination state, the deposit generation state, and the like cannot be completely grasped visually. As a result, there is a possibility that the machine, the facility, and the like are stopped.
Therefore, the inventors of the present invention have considered that the deterioration of hue with the passage of time of a lubricating oil composition containing zinc dialkyldithiophosphate is delayed. It can be considered that: this makes it possible to extend the period of time in which the contamination state, the deposit occurrence state, and the like of the lubricating oil composition can be observed appropriately by visual observation, and to reduce the risk of machine and equipment shutdown due to the contamination state, the deposit occurrence state, and the like which are not completely grasped by visual observation. In addition, it can be said that retarding the deterioration of the hue of the lubricating oil composition at least suppresses the oxidative deterioration of the lubricating oil composition, and therefore, it can be said that this is a desirable measure for the lubricating oil composition.
The present invention addresses the problem of providing a lubricating oil composition containing zinc dialkyldithiophosphate, the lubricating oil composition having a gradual deterioration in hue over time.
Means for solving the problems
The present inventors have made extensive studies to solve the above problems, and have completed the following invention.
Namely, the present invention relates to the following [1].
[1] A lubricating oil composition comprising a base oil (A), a zinc dialkyldithiophosphate (B), and a sodium-based detergent (C),
a zinc atom content of 100 to 2,000 mass ppm based on the total amount of the lubricating oil composition,
the content of sodium atom is 5-1,000 ppm by mass based on the total amount of the lubricating oil composition.
Effects of the invention
According to the present invention, there can be provided a lubricating oil composition containing zinc dialkyldithiophosphate, which lubricating oil composition is slow in deterioration of hue with the passage of time.
Detailed Description
In the present specification, the lower limit and the upper limit recited in a stepwise manner with respect to a preferable numerical range (for example, a range of contents and the like) may be independently combined. For example, according to the description of "preferably 10 to 90, more preferably 30 to 60", the "lower limit value (10) is preferable and the" upper limit value (60) is more preferable, and the combination is set to "10 to 60".
In the present specification, the numerical values of the examples are numerical values that can be used as upper or lower limit values.
In the present specification, the numerical range denoted by "a to B" means "a to B inclusive" unless otherwise specified.
[ embodiment of lubricating oil composition of the present invention ]
The lubricating oil composition of the present invention is a lubricating oil composition containing a base oil (A), a zinc dialkyldithiophosphate (B) and a sodium-based detergent (C),
a zinc atom content of 100 to 2,000 mass ppm based on the total amount of the lubricating oil composition,
the sodium atom content is 5-1,000 mass ppm based on the total amount of the lubricating oil composition.
The present inventors have conducted intensive studies on a lubricating oil composition containing zinc dialkyldithiophosphate (hereinafter, also referred to as "ZnDTP") in order to retard deterioration in hue with the passage of time. As a result, it was found that: the lubricating oil composition in which ZnDTP and a sodium-based detergent are used in combination and the zinc atom content and the sodium atom content are adjusted to specific ranges, respectively, can retard the deterioration in hue that occurs over time.
It is noted that, according to the study by the present inventors: when ZnDTP and a sodium-based detergent are not combined but are separately blended in a lubricating oil composition, color deterioration with the passage of time tends to occur at an early stage. In particular, when a sodium-based detergent is blended alone, deterioration in hue with the passage of time is significant.
However, when ZnDTP is combined with a sodium-based detergent and compounded in a lubricating oil composition, it was surprisingly known that: the deterioration of the hue with time is extremely slow.
The detailed mechanism of this phenomenon is not clear, and it is considered that the reason is at least: the hue deterioration of the lubricating oil composition due to the influence of ZnDTP is suppressed by the sodium-based detergent, and the hue deterioration due to the influence of the sodium-based detergent is suppressed by ZnDTP. In other words, it can be presumed that: the interaction between ZnDTP and the sodium-based detergent can suppress the early deterioration of the hue which occurs when ZnDTP and the sodium-based detergent are separately blended in the lubricating oil composition, and the effect of the present invention is exhibited.
The effect of the present invention is not exhibited when the sodium-based detergent is replaced with the calcium-based detergent or when the sodium-based detergent is replaced with the magnesium-based detergent.
In the following description, "base oil (a)", "ZnDTP (B)" and "sodium detergent (C)" are also referred to as "component (a)", "component (B)" and "component (C)", respectively.
The lubricating oil composition according to one embodiment of the present invention may be composed of only the "component (a)", "component (B)" and "component (C)", but may contain other components in addition to the "component (a)", "component (B)" and "component (C)" within a range not impairing the effects of the present invention.
In one embodiment of the present invention, the total content of the component (a), the component (B), and the component (C) is preferably 70.0 to 100 mass%, more preferably 80.0 to 100 mass%, even more preferably 90.0 to 100 mass%, and even more preferably 95.0 to 100 mass%, based on the total amount of the lubricating oil composition, from the viewpoint of more easily exhibiting the effects of the present invention.
The base oil (a), znDTP (B), sodium detergent (C), and other additives will be described in detail below.
< base oil (A) >
The lubricating oil composition of the present invention contains a base oil (A).
As the base oil (a), 1 or more selected from mineral oils and synthetic oils conventionally used as base oils of lubricating oils can be used without particular limitation.
Examples of the mineral oil include an atmospheric residue obtained by atmospheric distillation of a crude oil such as a paraffinic crude oil, a mesogenic crude oil, or a naphthenic crude oil; a distillate obtained by vacuum distillation of these atmospheric residues; and mineral oil obtained by subjecting the distillate oil to one or more refining treatments such as solvent deasphalting, solvent extraction, hydrocracking, solvent dewaxing, contact dewaxing, and hydrofinishing.
Examples of the synthetic oil include polyalphaolefins such as α -olefin homopolymers and α -olefin copolymers (for example, α -olefin copolymers having 8 to 14 carbon atoms such as ethylene- α -olefin copolymers); an isoparaffin; various esters such as polyol esters and dibasic acid esters; various ethers such as polyphenylene ether; a polyalkylene glycol; an alkylbenzene; an alkyl naphthalene; GTL base oils and the like obtained by isomerizing waxes (gas to liquids (GTL) waxes) produced from natural gas by the fischer-tropsch method or the like.
The base oil (a) may be used singly or in combination of a plurality of mineral oils, or may be used singly or in combination of a plurality of synthetic oils. In addition, 1 or more kinds of mineral oils and 1 or more kinds of synthetic oils may be used in combination.
From the viewpoint of further improving the oxidation stability of the lubricating oil composition, the base oil (a) is preferably 1 or more selected from base oils classified into groups II, III and IV of the base oil classification of the American Petroleum Institute (API), and more preferably 1 or more selected from base oils classified into groups II and III.
The kinematic viscosity at 40 ℃ of the base oil (A) (hereinafter also referred to as "40 ℃ kinematic viscosity") is preferably 8.00mm2A thickness of 10.0mm or more, more preferably2At least s, more preferably 15.0mm2More than s. In addition, it is preferably 150mm2Less than s, more preferably 120mm2Less than s, more preferably 100mm2The ratio of the water to the water is less than s. The upper and lower limits of these ranges may be combined arbitrarily. Specifically, it is preferably 8.00mm2/s~150mm2S, more preferably 10.0mm2/s~120mm2(iv) s, more preferably 15.0mm2/s~100mm2/s。
If the kinematic viscosity at 40 ℃ of the base oil (A) is 8.00mm2At least s, the lubricating oil composition has a high flash point and excellent lubricating properties.
In addition, if the kinematic viscosity at 40 ℃ of the base oil (A) is 150mm2When the viscosity resistance is not so large at low temperatures, the machine is likely to operate well even when the temperature is not as high as s or less.
The viscosity index of the base oil (a) is preferably 80 or more, more preferably 90 or more, and further preferably 100 or more. When the viscosity index of the base oil (a) is in the above range, the viscosity change due to the temperature change can be suppressed, and an oil film is easily formed at a high temperature, and the wear resistance is easily improved.
When the base oil (a) is a mixed base oil containing 2 or more base oils, the kinematic viscosity at 40 ℃ and the viscosity index of the mixed base oil are preferably within the above ranges.
In the present specification, the kinematic viscosity at 40 ℃ and the viscosity index refer to values measured or calculated in accordance with JIS K2283: 2000.
In the lubricating oil composition according to one embodiment of the present invention, the content of the base oil (a) is preferably 80.0 mass% or more, more preferably 85.0 mass% or more, and further preferably 90.0 mass% or more, based on the total amount of the lubricating oil composition, from the viewpoint of more easily exhibiting the effects of the present invention. Further, it is preferably 99.84% by mass or less, more preferably 99.80% by mass or less, and further preferably 99.50% by mass or less. The upper and lower limits of these ranges may be arbitrarily combined. Specifically, the amount is preferably 80.0 to 99.84% by mass, more preferably 85.0 to 99.80% by mass, and still more preferably 90.0 to 99.50% by mass.
<ZnDTP(B)>
The lubricating oil composition of the present invention contains ZnDTP (B).
By adding ZnDTP (B) to the lubricating oil composition, the lubricating oil composition is imparted with oxidation resistance, abrasion resistance, and the like.
When the lubricating oil composition does not contain ZnDTP (B), the effect of the present invention achieved by the combination of ZnDTP (B) and the sodium-based detergent (C) is not exhibited.
Examples of ZnDTP (B) used in the lubricating oil composition according to one embodiment of the present invention include those represented by the following general formula (B1).
In the above general formula (b 1), R11~R14Each independently is a primary or secondary alkyl group having 3 to 22 carbon atoms, or an alkylaryl group substituted with an alkyl group having 3 to 18 carbon atoms.
About as R11~R14Examples of the primary or secondary alkyl group having 3 to 22 carbon atoms include primary or secondary propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, dodecyl, tetradecyl, hexadecyl, octadecyl, eicosyl, and ethylhexyl groups.
In addition, the compound may be R11~R14Examples of the alkylaryl group substituted with an alkyl group having 3 to 18 carbon atoms include a propylphenyl group, a pentylphenyl group, an octylphenyl group, a nonylphenyl group, and a dodecylphenyl group.
When the compound represented by the above general formula (B1) is used as ZnDTP (B), 1 or more of these compounds may be used alone or in combination.
Here, when the compound represented by the above general formula (B1) is used as ZnDTP (B) in the lubricating oil composition according to one embodiment of the present invention, zinc primary dialkyldithiophosphate (primary alkyl ZnDTP) having at least a primary alkyl group is preferably used, and primary alkyl ZnDTP alone is more preferably used.
When a primary alkyl ZnDTP and a secondary zinc dialkyldithiophosphate having a secondary alkyl group (secondary alkyl ZnDTP) are used in combination, the content ratio [ (primary alkyl ZnDTP)/(secondary alkyl ZnDTP) ] of the primary alkyl ZnDTP to the secondary alkyl ZnDTP is preferably 50/50 to 99/1, more preferably 60/40 to 95/5, and further preferably 70/30 to 90/10 in terms of mass ratio.
In the lubricating oil composition according to one embodiment of the present invention, the content of zinc atoms derived from ZnDTP (B) is preferably 100 mass ppm or more, more preferably 110 mass ppm or more, and even more preferably 120 mass ppm or more, based on the total amount of the lubricating oil composition, from the viewpoint of more easily exhibiting the effects of the present invention. Further, it is preferably 2,000 mass ppm or less, more preferably 1,900 mass ppm or less, and further preferably 1,800 mass ppm or less. The upper and lower limits of these ranges may be arbitrarily combined. Specifically, the amount is preferably 100 to 2,000 mass ppm, more preferably 110 to 1,900 mass ppm, and still more preferably 120 to 1,800 mass ppm.
In the lubricating oil composition according to one embodiment of the present invention, the content of ZnDTP (B) may be adjusted so that the content of zinc atoms derived from ZnDTP (B) satisfies the above range. The content of ZnDTP (B) is preferably 0.11 mass% or more, more preferably 0.13 mass% or more, and further preferably 0.14 mass% or more, based on the total amount of the lubricating oil composition. Further, it is preferably 2.3% by mass or less, more preferably 2.2% by mass or less, and further preferably 2.1% by mass or less. The upper and lower limits of these ranges may be arbitrarily combined. Specifically, the amount is preferably 0.11 to 2.3% by mass, more preferably 0.13 to 2.2% by mass, and still more preferably 0.14 to 2.1% by mass.
< sodium-based detergent (C) >
The lubricating oil composition of the present invention contains a sodium detergent (C).
The lubricating oil composition contains the sodium-based detergent (C), whereby detergency and the like are imparted to the lubricating oil composition.
When the lubricating oil composition does not contain the sodium-based detergent (C), the effect of the present invention achieved by the combination of ZnDTP (B) and the sodium-based detergent (C) is not exhibited.
Examples of the sodium-based detergent (C) include sodium salts such as sodium sulfonate, sodium phenolate, and sodium salicylate.
Among these, sodium sulfonate is preferable from the viewpoint of more easily exerting the effect of the present invention.
The sodium sulfonate is preferably a compound represented by the following general formula (c 1).
The sodium phenolate is preferably a compound represented by the following general formula (c 2).
The sodium salicylate is preferably a compound represented by the following general formula (c 3).
The sodium-based detergent (C) may be used alone in 1 kind, or may be used in combination in 2 or more kinds.
In the general formulae (c 1) to (c 3), R represents a hydrogen atom or a hydrocarbon group having 1 to 18 carbon atoms. In the general formula (c 2), q is an integer of 0 or more, preferably an integer of 0 to 3.
Examples of the hydrocarbon group that can be selected as R include an alkyl group having 1 to 18 carbon atoms, an alkenyl group having 1 to 18 carbon atoms, a cycloalkyl group having 3 to 18 ring-forming carbon atoms, an aryl group having 6 to 18 ring-forming carbon atoms, an alkylaryl group having 7 to 18 carbon atoms, and an arylalkyl group having 7 to 18 carbon atoms.
The sodium-based detergent (C) may be either neutral, basic or overbased, and from the viewpoint of more easily improving the base number retention of the lubricating oil composition, a basic or overbased sodium-based detergent is preferred, and an overbased sodium-based detergent is more preferred.
In the present specification, the basic or overbased metal-based detergent means: a detergent which is obtained by reacting a metal with an acidic organic compound and contains the metal in an excess amount compared with the stoichiometric value necessary for the neutralization of the metal with the acidic organic compound. That is, when the metal ratio is defined as the total stoichiometric amount of metal in the metal-based detergent relative to the stoichiometric amount of metal in the metal salt (neutral salt) obtained by reacting the metal with the acidic organic compound at a stoichiometric value necessary for the neutralization, the metal ratio of the basic or overbased metal-based detergent is greater than 1. The metal ratio of the basic or overbased metal-based detergent used in the present embodiment is preferably more than 1.3, more preferably from 5 to 30, and still more preferably from 7 to 22.
In the present specification, the case where the base number is less than 50mgKOH/g, the case where the base number is 50mgKOH/g or more and less than 150mgKOH/g, and the case where the base number is 150mgKOH/g or more, which are measured by the perchloric acid method in accordance with JIS K2501.
The base number of the sodium-based detergent (C) is preferably 5mgKOH/g or more, more preferably 100mgKOH/g or more, further preferably 200mgKOH/g or more, further preferably 300mgKOH/g or more, further preferably 350mgKOH/g or more, further preferably 400mgKOH/g or more, and preferably 600mgKOH/g or less, more preferably 550mgKOH/g or less, further preferably 500mgKOH/g or less. The upper and lower limits of these ranges may be combined arbitrarily. Specifically, the amount of the acid added is preferably 5mgKOH/g to 600mgKOH/g, more preferably 100mgKOH/g to 550mgKOH/g, still more preferably 200mgKOH/g to 500mgKOH/g, still more preferably 300mgKOH/g to 500mgKOH/g, still more preferably 350mgKOH/g to 500mgKOH/g, and still more preferably 400mgKOH/g to 500mgKOH/g.
In the lubricating oil composition according to one embodiment of the present invention, the content of sodium atoms derived from the sodium-based detergent (C) is preferably 5 ppm by mass or more, more preferably 10 ppm by mass or more, and still more preferably 15 ppm by mass or more, based on the total amount of the lubricating oil composition, from the viewpoint of more easily exhibiting the effects of the present invention. Further, it is preferably 1,000 mass ppm or less, more preferably 980 mass ppm or less, and further preferably 970 mass ppm or less. The upper and lower limits of these ranges may be combined arbitrarily. Specifically, the amount is preferably 5 to 1,000 mass ppm, more preferably 10 to 980 mass ppm, and still more preferably 15 to 970 mass ppm.
In the lubricating oil composition according to one embodiment of the present invention, the content of the sodium-based detergent (C) may be adjusted so that the content of the sodium atom derived from the sodium-based detergent (C) satisfies the above range. The content of the sodium-based detergent (C) is preferably 0.01 mass% or more based on the total amount of the lubricating oil composition. Further, it is preferably 0.53% by mass or less, more preferably 0.52% by mass or less, and further preferably 0.51% by mass or less. The upper and lower limits of these ranges may be arbitrarily combined. Specifically, the content is preferably 0.01 to 0.53 mass%, more preferably 0.01 to 0.52 mass%, and still more preferably 0.01 to 0.51 mass%.
< other additives >
The lubricating oil composition according to one embodiment of the present invention may contain additives for lubricating oils other than the component (B) and the component (C) within a range not to impair the effects of the present invention.
Examples of the additive for lubricating oils include antioxidants, viscosity index improvers, pour point depressants, rust inhibitors, metal inactivators, antifoaming agents, extreme pressure agents, anti-wear agents, oiliness agents, and metal detergents (C') other than the sodium detergents (C).
These additives for lubricating oils may be used alone in 1 kind, or in combination in 2 or more kinds.
In the present specification, additives such as viscosity index improvers and defoaming agents may be in the form of solutions obtained by diluting and dissolving a part of the base oil (a) in consideration of workability and solubility in the base oil (a). In this case, in the present specification, the content of the additive such as the defoaming agent and the viscosity index improver described later is a content in terms of an active ingredient (in terms of a resin component) after removing the diluent oil.
(antioxidant)
Examples of the antioxidant include amine-based antioxidants and phenol-based antioxidants. These can be used alone in 1 kind, also can be combined with more than 2 kinds.
Examples of the amine-based antioxidant include monoalkyldiphenylamine-based compounds such as monooctyldiphenylamine and monononyldiphenylamine; dialkyl diphenylamine-based compounds such as 4,4 '-dibutyldiphenylamine, 4' -dipentyldiphenylamine, 4 '-dihexyldiphenylamine, 4' -diheptyldiphenylamine, 4 '-dioctyldiphenylamine, 4' -dinonyldiphenylamine and monobutylphenylmonooctylphenylamine; polyalkyldiphenylamine compounds such as tetrabutyldiphenylamine, tetrahexyldiphenylamine, tetraoctyldiphenylamine and tetranonyldiphenylamine; naphthylamine-based compounds such as α -naphthylamine, phenyl- α -naphthylamine, butylphenyl- α -naphthylamine, pentylphenyl- α -naphthylamine, hexylphenyl- α -naphthylamine, heptylphenyl- α -naphthylamine, octylphenyl- α -naphthylamine, nonylphenyl- α -naphthylamine, and the like.
Examples of the phenolic antioxidant include monophenol compounds such as 2, 6-di-t-butyl-4-methylphenol, 2, 6-di-t-butyl-4-ethylphenol, and octadecyl 3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate; bisphenol compounds such as 4,4 '-methylenebis (2, 6-di-tert-butylphenol) and 2,2' -methylenebis (4-ethyl-6-tert-butylphenol).
When the lubricating oil composition according to one embodiment of the present invention contains an antioxidant, the content of the antioxidant may be set to the minimum amount necessary for maintaining oxidation stability, and is preferably 0.01 to 1.5 mass%, more preferably 0.1 to 1 mass%, based on the total amount of the lubricating oil composition.
(viscosity index improver)
Examples of the viscosity index improver include polymers such as non-dispersible polymethacrylate, olefin copolymers (e.g., ethylene-propylene copolymers), dispersible olefin copolymers, and styrene copolymers (e.g., styrene-diene copolymers and styrene-isoprene copolymers). These can be used alone in 1 kind, also can be combined with more than 2 kinds.
When the lubricating oil composition according to one embodiment of the present invention contains a viscosity index improver, the content of the viscosity index improver in terms of resin component is preferably 0.01 to 10 mass%, more preferably 0.02 to 7 mass%, and even more preferably 0.03 to 5 mass%, based on the total amount of the lubricating oil composition.
(pour point depressant)
Examples of the pour point depressant include polymethacrylates having a mass-average molecular weight of about 5 to 15 ten thousand. These can be used alone in 1 kind, also can be combined with more than 2 kinds.
When the lubricating oil composition according to one embodiment of the present invention contains a pour point depressant, the pour point depressant content is preferably 0.01 to 5 mass%, more preferably 0.02 to 2 mass%, based on the total amount of the lubricating oil composition.
(Rust preventive)
Examples of the rust inhibitor include alkyl benzene sulfonate, dinonyl naphthalene sulfonate, organic phosphite, organic phosphate, alkenyl succinate, and alkenyl succinate polyol ester. These can be used alone in 1 kind, also can be combined with more than 2 kinds.
When the lubricating oil composition according to one embodiment of the present invention contains a rust inhibitor, the content of the rust inhibitor is preferably 0.01 to 10.0 mass%, more preferably 0.03 to 5.0 mass%, based on the total amount of the lubricating oil composition.
(Metal Inerting Agents)
Examples of the metal inactivating agent include benzotriazole compounds, tolyltriazole compounds, thiadiazole compounds, imidazole compounds, and pyrimidine compounds. These can be used alone in 1 kind, also can be combined with more than 2 kinds.
When the lubricating oil composition according to one embodiment of the present invention contains a metal inactivating agent, the content of the metal inactivating agent is preferably 0.01 to 5.0% by mass, more preferably 0.03 to 3.0% by mass, based on the total amount of the lubricating oil composition.
(antifoaming agent)
Examples of the defoaming agent include silicone defoaming agents, fluorine defoaming agents such as fluorosilicone oils and fluoroalkyl ethers, and polyacrylate defoaming agents. These can be used alone in 1 kind, also can be combined with more than 2 kinds.
When the lubricating oil composition according to one embodiment of the present invention contains an antifoaming agent, the content of the antifoaming agent in terms of resin components is preferably 0.0001 to 0.20 mass%, more preferably 0.0005 to 0.10 mass%, based on the total amount of the lubricating oil composition.
(extreme pressure agent or anti-wear agent)
The lubricating oil composition according to one embodiment of the present invention may contain 1 or more selected from the group consisting of extreme pressure agents and anti-wear agents, and from the viewpoint of facilitating the exertion of the effects of the present invention, it is preferable that the content of 1 or more selected from the group consisting of extreme pressure agents and anti-wear agents is small.
Examples of the extreme pressure agent and the anti-wear agent include an organometallic compound, a sulfur compound, a phosphorus compound, and a sulfur-phosphorus compound which are not the component (B).
Examples of the organometallic compound include organic molybdenum compounds such as molybdenum dialkyldithiocarbamate (MoDTC) and molybdenum dialkyldithiophosphate (MoDTP), and organic zinc compounds other than component (B) such as zinc dialkyldithiocarbamate (ZnDTC).
Examples of the sulfur-based compound include a sulfurized fat or oil, a sulfurized fatty acid, a sulfurized ester, a sulfurized olefin, a monosulfide, a polysulfide, a dihydrocarbyl sulfide, a thiadiazole compound, an alkylthiocarbamoyl compound, a thiocarbamate compound, a thioterpene compound, and a dialkyl thiodipropionate compound.
Examples of the phosphorus-based compound include phosphate esters such as aryl phosphate, alkyl phosphate, alkenyl phosphate, and alkylaryl phosphate; phosphites such as aryl hydrogen phosphite, alkyl hydrogen phosphite, aryl phosphite, alkyl phosphite, alkenyl phosphite, and arylalkyl phosphite; and amine salts thereof.
Examples of the sulfur-phosphorus compound include monoalkyl thiophosphate, dialkyl dithiophosphate, trialkyl trithiophosphate, and amine salts thereof.
In the lubricating oil composition according to one embodiment of the present invention, the content of 1 or more selected from the group consisting of an extreme pressure agent and an anti-wear agent is usually about 0.05 to 10 mass%, preferably 0.1 to 5 mass%, based on the total amount of the lubricating oil composition.
Among these, from the viewpoint of ensuring oxidation stability, suppressing sludge formation, suppressing color deterioration, and the like, among the phosphorus-based compounds, acid phosphate esters such as monoaryl acid phosphate, diaryl acid phosphate, monoalkyl acid phosphate, dialkyl acid phosphate, monoalkenyl acid phosphate, and dialkenyl acid phosphate are preferable; acid phosphites such as monoalkyl acid phosphites, dialkyl acid phosphites, monoalkenyl acid phosphites, and dienyl acid phosphites; and low content of amine salts thereof. Specifically, the amount of the phosphorus-containing compound is preferably less than 0.01% by mass, more preferably less than 0.001% by mass, and further preferably none of these phosphorus-containing compounds, based on the total amount of the lubricating oil composition.
(oiliness agent)
Examples of the oily agent include aliphatic alcohols; fatty acid compounds such as fatty acids and fatty acid metal salts; ester compounds such as polyol esters, sorbitan esters, and glycerides; amine compounds such as aliphatic amines, and the like.
From the viewpoint of the effect of addition, the content of the oily agent is usually 0.1 to 10 mass%, preferably 0.5 to 5 mass%, based on the total amount of the lubricating oil composition.
(Metal-based detergent (C') other than sodium-based detergent (C))
In the lubricating oil composition according to one embodiment of the present invention, the metal-based detergent (C ') other than the sodium-based detergent (C) may be contained, and the content of the metal-based detergent (C') other than the sodium-based detergent (C) is preferably small from the viewpoint of easily exerting the effect of the present invention.
Examples of the metal-based detergent (C') other than the sodium-based detergent (C) include a magnesium-based detergent and a calcium-based detergent.
Examples of the magnesium-based detergent include magnesium salts such as magnesium sulfonate, magnesium phenate, and magnesium salicylate. The magnesium-based detergent may be neutral, basic, or overbased.
Examples of the calcium-based detergent include calcium salts such as calcium sulfonate, calcium phenate, and calcium salicylate. The calcium detergent may be neutral, basic, or overbased.
In the lubricating oil composition according to one embodiment of the present invention, the content of metal atoms derived from the metal-based detergent (C') other than the sodium-based detergent (C) is preferably small, and the content is preferably less than 30 mass ppm, more preferably less than 20 mass ppm, even more preferably less than 10 mass ppm, even more preferably less than 1 mass ppm, and even more preferably no magnesium atom derived from a magnesium-based detergent, based on the total amount of the lubricating oil composition.
In the lubricating oil composition according to one embodiment of the present invention, the content of a magnesium atom derived from the magnesium-based detergent is preferably small, and the content is preferably less than 30 mass ppm, more preferably less than 20 mass ppm, still more preferably less than 10 mass ppm, still more preferably less than 1 mass ppm, and still more preferably no magnesium atom derived from the magnesium-based detergent, based on the total amount of the lubricating oil composition.
Further, in the lubricating oil composition according to one embodiment of the present invention, the content of calcium atoms derived from the calcium-based detergent is preferably small, and the content is preferably less than 30 mass ppm, more preferably less than 20 mass ppm, further preferably less than 10 mass ppm, further preferably less than 1 mass ppm, and still further preferably no calcium atoms derived from the calcium-based detergent, based on the total amount of the lubricating oil composition.
[ physical Properties of lubricating oil composition ]
< kinematic viscosity at 40 ℃ and viscosity index >
The lubricating oil composition according to one embodiment of the present invention preferably has a kinematic viscosity at 40 ℃ of 9.00mm2/s~165mm2S, more preferably 20.0mm2/s~120mm2(ii) s, more preferably 25.0mm2/s~100mm2/s。
Lubricating oil compositionHas a kinematic viscosity of 9.00mm at 40 DEG C2At least s, the lubricating oil composition has a high flash point and excellent lubricating properties. In addition, if the kinematic viscosity at 40 ℃ of the base oil (A) is 165mm2If the viscosity resistance is not so high at low temperatures, the machine can be easily operated satisfactorily.
The viscosity index of the lubricating oil composition according to one embodiment of the present invention is preferably 80 or more, more preferably 90 or more, and still more preferably 100 or more.
The kinematic viscosity at 40 ℃ and the viscosity index refer to values measured or calculated in accordance with JIS K2283.
< Zinc atom content >
In the lubricating oil composition of the present invention, the zinc atom content is 100 mass ppm to 2,000 mass ppm based on the total amount of the lubricating oil composition.
If the zinc atom content is less than 100 mass ppm, the oxidation resistance and wear resistance are poor, and the effect of the present invention is difficult to exert. In addition, even when the zinc atom content exceeds 2,000 mass ppm, the effect of the present invention is hardly exhibited.
Here, the zinc atom content of the lubricating oil composition according to one embodiment of the present invention is preferably 110 ppm by mass or more, more preferably 120 ppm by mass or more, based on the total amount of the lubricating oil composition, from the viewpoint of more easily exhibiting the effects of the present invention and further from the viewpoint of producing a lubricating oil composition excellent in oxidation resistance and abrasion resistance. Further, it is preferably 1,900 mass ppm or less, more preferably 1,800 mass ppm or less. The upper and lower limits of these ranges may be arbitrarily combined. Specifically, the amount is preferably 110 to 1,900 mass ppm, more preferably 120 to 1,800 mass ppm. In the present specification, the zinc atom content of the lubricating oil composition refers to a value measured in accordance with ASTM D4951.
< sodium atom content >
In the lubricating oil composition of the present invention, the sodium atom content is 5 to 1,000 mass ppm based on the total amount of the lubricating oil composition.
If the sodium atom content is less than 5 mass ppm, a lubricating oil composition having poor detergency is formed, and the effect of the present invention is hardly exhibited. In addition, when the sodium atom content exceeds 1,000 mass ppm, the effect of the present invention is hardly exerted.
Here, from the viewpoint of more easily exerting the effects of the present invention and further from the viewpoint of producing a lubricating oil composition excellent in detergency, the sodium atom content of the lubricating oil composition according to one embodiment of the present invention is preferably 10 ppm by mass or more, more preferably 15 ppm by mass or more, based on the total amount of the lubricating oil composition. Further, the amount is preferably 980 ppm by mass or less, more preferably 970 ppm by mass or less. The upper and lower limits of these ranges may be combined arbitrarily. Specifically, the amount is preferably 10 to 980 ppm by mass, and more preferably 15 to 970 ppm by mass.
In the present specification, the sodium atom content of the lubricating oil composition refers to a value measured in accordance with ASTM D4951.
< ratio of content of Zinc atom to content of sodium atom >
In the lubricating oil composition according to one embodiment of the present invention, the content ratio of the zinc atom content to the sodium atom content [ (Zn)/(Na) ] is preferably 0.050 or more, more preferably 0.080 or more, and still more preferably 0.10 or more in terms of a mass ratio, from the viewpoint of more easily exhibiting the effects of the present invention. Further, it is preferably 50 or less, more preferably 30 or less, and further preferably 20 or less. The upper and lower limits of these ranges may be combined arbitrarily. Specifically, the content is preferably 0.050 to 50, more preferably 0.080 to 30, and still more preferably 0.10 to 20.
< magnesium atom content >
In the lubricating oil composition according to one embodiment of the present invention, the magnesium atom content is preferably less than 30 mass ppm, more preferably less than 20 mass ppm, further preferably less than 10 mass ppm, further preferably less than 1 mass ppm, and still further preferably no magnesium atom, based on the total amount of the lubricating oil composition, from the viewpoint of more easily exhibiting the effects of the present invention.
In the present specification, the magnesium atom content of the lubricating oil composition refers to a value measured in accordance with ASTM D4951.
< calcium atom content >
In the lubricating oil composition according to one embodiment of the present invention, from the viewpoint of more easily exhibiting the effects of the present invention, the calcium atom content is preferably less than 30 mass ppm, more preferably less than 20 mass ppm, further preferably less than 10 mass ppm, further preferably less than 1 mass ppm, and still further preferably no calcium atom is contained, based on the total amount of the lubricating oil composition.
In the present specification, the calcium atom content of a lubricating oil composition refers to a value measured in accordance with ASTM D4951.
< ASTM color after ISOT test >
In the lubricating oil composition according to one embodiment of the present invention, the ASTM color after the ISOT test at 150 ℃ for 168 hours according to JIS K2514-1.
[ method for producing lubricating oil composition ]
The method for producing the lubricating oil composition of the present invention is not particularly limited.
For example, a method for producing a lubricating oil composition according to one embodiment of the present invention includes a step of mixing a base oil (a), znDTP (B), and a sodium detergent (C).
The method of mixing the above components is not particularly limited, and examples thereof include a method comprising a step of blending the component (B) and the component (C) into the base oil (a). The component (B) and the component (C) may be blended with the base oil (a) at the same time or may be blended separately. The same applies to the other components except for the component (B) and the component (C). The components may be blended in the form of a solution (dispersion) by adding diluent oil or the like. After the components are mixed, the mixture is preferably uniformly dispersed by stirring according to a known method.
[ use of lubricating oil composition ]
Since the lubricating oil composition of the present invention has a low deterioration in hue with the passage of time, it can be suitably used for machines, equipment, and the like that employ a method of visually confirming the occurrence of contamination, deposits, and the like. In addition, the oxidation stability is also excellent.
Therefore, the lubricant is suitably used as, for example, a hydraulic working oil, a compressor oil, a gear oil, a cutting oil, a machine oil, a refrigerator oil, a turbine oil, an internal combustion engine oil, a transmission oil, or the like, and is particularly suitably used as a hydraulic working oil.
Accordingly, in one embodiment of the present invention, the following method is provided.
(1) A method of use of the lubricating oil composition of the present invention as a hydraulic working oil, a compressor oil, a gear oil, a cutting oil, a machine oil, a refrigerator oil, a turbine oil, an internal combustion engine oil or a transmission oil.
(2) Method of use, which uses the lubricating oil composition of the invention as a hydraulic working oil.
[ one embodiment of the present invention ] is provided
One embodiment of the present invention provides the following [1] to [6].
[1] A lubricating oil composition comprising a base oil (A), a zinc dialkyldithiophosphate (B), and a sodium-based detergent (C),
a zinc atom content of 100 to 2,000 mass ppm based on the total amount of the lubricating oil composition,
the content of sodium atom is 5-1,000 ppm by mass based on the total amount of the lubricating oil composition.
[2] The lubricating oil composition according to [1], wherein the content ratio [ (Zn)/(Na) ] of zinc atoms (Zn) in the lubricating oil composition to sodium atoms (Na) in the lubricating oil composition is 0.050 to 50 by mass.
[3] The lubricating oil composition according to [1] or [2], wherein the content of magnesium atoms is less than 30 mass ppm based on the total amount of the foregoing lubricating oil composition.
[4] The lubricating oil composition according to any one of [1] to [3], wherein the content of calcium atoms is less than 30 mass ppm based on the total amount of the lubricating oil composition.
[5] The lubricating oil composition according to any one of [1] to [4], wherein an ASTM color after an ISOT test at 150 ℃ for 168 hours in accordance with JIS K2514-1.
[6]According to [1]~[5]The lubricating oil composition as described in any one of the above, wherein the kinematic viscosity at 40 ℃ of the base oil (A) is 9.00mm2/s~165mm2/s。
Examples
The present invention will be specifically described with reference to the following examples, but the present invention is not limited to the following examples.
[ methods for measuring various physical Property values ]
The physical property values of the base oil and the lubricating oil composition used in each example and each comparative example were measured in accordance with the following procedures.
(1) Kinematic viscosity and viscosity index
Kinematic viscosity at 40 ℃ and viscosity index were measured and calculated in accordance with JIS K2283: 2000.
(2) Atomic weight of sodium and atomic weight of zinc
The calcium atomic weight, magnesium atomic weight, sodium atomic weight and zinc atomic weight in the lubricating oil composition were measured according to ASTM D4951.
Examples 1 to 11 and comparative examples 1 to 7
The base oils and various additives shown below were thoroughly mixed in the amounts (mass%) shown in table 1 to prepare lubricating oil compositions.
The details of the base oils and various additives used in examples 1 to 11 and comparative examples 1 to 7 are shown below.
< base oil (A) >
Use of mineral oil belonging to group II in the API classification (kinematic viscosity at 40 ℃ =30.6 mm)2/s, viscosity index = 104).
< Zinc dialkyldithiophosphate (B) >
Using R in the above general formula (b 1)11~R14Zinc primary dialkyldithiophosphate which is 2-ethylhexyl (primary alkyl).
Content of zinc atom: 8.90 mass%, content of phosphorus atom: 7.40 mass%, content of sulfur atom: 15.0% by mass
In table 1, zinc dialkyldithiophosphate (B) is abbreviated as "ZnDTP".
< sodium-based detergent (C), metal-based detergent (C') other than sodium-based detergent >
As the Zizanesulfonic acid salt (base number: 448mgKOH/g, sodium atom content: 19.5% by mass)
Calcium spike sulfonate (base number: 307mgKOH/g, calcium atom content: 11.9% by mass)
Magnesium spike sulfonate (base number: 308mgKOH/g, magnesium atom content: 9.4% by mass)
The base numbers of the sodium-based detergent (C) and the metal-based detergent (C') other than the sodium-based detergent were measured by the perchloric acid method in accordance with JIS K2501-9.
[ evaluation ]
< ISOT test >
Copper pieces and iron pieces as catalysts were put into a test oil (lubricating oil composition), and an ISOT test was performed in accordance with JIS K2514-1. The test temperature was set to 150 ℃, and the ASTM color (JIS K2580.
Further, a sample oil having an ASTM color of 1.0 or less (L1.0) is judged to be "hue deterioration", and a sample oil having an ASTM color of more than 1.0 (L1.5, L2.0, etc.) is judged to be "hue deterioration".
< base number >
The base number of the test oil before starting the ISOT test was measured by the hydrochloric acid method in accordance with JIS K2501-80h) Base number of test oil 72 hours after initiation of ISOT test (B)72h) And the base number of the test oil 168 hours after the start of the ISOT test (B)168h)。
Then, the base number retention rate S "72 hours after the start of the ISOT test was calculated by the following formula72h(%) "and" base number maintenance ratio S after 168 hours from the start of ISOT test168h(%)”。
The results are shown in Table 1.
The following conclusions can be drawn from table 1.
Even after 168 hours from the start of the ISOT test, no color deterioration was observed in the lubricating oil compositions of examples 1 to 11.
In contrast, in comparative examples 1 and 2 in which ZnDTP and sodium sulfonate were not compounded, deterioration in hue was observed after 72 hours from the start of the ISOT test.
In addition, in comparative examples 3 and 4 in which sodium sulfonate was compounded and ZnDTP was not compounded, deterioration in hue was observed after 72 hours from the start of the ISOT test.
Further, also in comparative examples 5 and 6 in which calcium sulfonate was compounded instead of sodium sulfonate and comparative example 7 in which magnesium sulfonate was compounded instead of sodium sulfonate, deterioration in hue was observed after 72 hours from the start of the ISOT test.
Claims (6)
1. A lubricating oil composition comprising a base oil (A), a zinc dialkyldithiophosphate (B) and a sodium detergent (C),
a zinc atom content of 100 to 2,000 mass ppm based on the total amount of the lubricating oil composition,
the content of sodium atom is 5-1,000 ppm by mass based on the total amount of the lubricating oil composition.
2. The lubricating oil composition according to claim 1, wherein a content ratio [ (Zn)/(Na) ] of zinc atoms (Zn) in the lubricating oil composition to sodium atoms (Na) in the lubricating oil composition is 0.050 to 50 by mass.
3. The lubricating oil composition according to claim 1 or 2, wherein the content of magnesium atoms is less than 30 mass ppm based on the total amount of the lubricating oil composition.
4. The lubricating oil composition according to any one of claims 1 to 3, wherein the content of calcium atoms is less than 30 ppm by mass based on the total amount of the lubricating oil composition.
5. The lubricating oil composition according to any one of claims 1 to 4, wherein an ASTM color after an ISOT test at 150 ℃ for 168 hours according to JIS K2514-1, 2013, with a copper sheet and an iron sheet as catalysts, is 1.0 or less.
6. The lubricating oil composition according to any one of claims 1 to 5, wherein the kinematic viscosity of the base oil (A) at 40 ℃ is 9.00mm2/s~165mm2/s。
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| JP2020-065360 | 2020-03-31 | ||
| JP2020065360A JP2021161291A (en) | 2020-03-31 | 2020-03-31 | Lubricant composition |
| PCT/JP2021/013231 WO2021200799A1 (en) | 2020-03-31 | 2021-03-29 | Lubricating oil composition |
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| US20230112787A1 (en) | 2023-04-13 |
| WO2021200799A1 (en) | 2021-10-07 |
| JP2021161291A (en) | 2021-10-11 |
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