EP2716743A1 - Composition d'huile lubrifiante - Google Patents
Composition d'huile lubrifiante Download PDFInfo
- Publication number
- EP2716743A1 EP2716743A1 EP12790030.6A EP12790030A EP2716743A1 EP 2716743 A1 EP2716743 A1 EP 2716743A1 EP 12790030 A EP12790030 A EP 12790030A EP 2716743 A1 EP2716743 A1 EP 2716743A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mass
- molybdenum
- carbon atoms
- lubricating oil
- oxygen
- 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.)
- Withdrawn
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 51
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 49
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 55
- 239000002199 base oil Substances 0.000 claims abstract description 47
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 42
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 24
- 239000001301 oxygen Substances 0.000 claims abstract description 24
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 22
- 239000011593 sulfur Substances 0.000 claims abstract description 22
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000001050 lubricating effect Effects 0.000 claims abstract description 19
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 19
- 239000011733 molybdenum Substances 0.000 claims abstract description 19
- 125000003342 alkenyl group Chemical group 0.000 claims abstract description 17
- 239000005078 molybdenum compound Substances 0.000 claims abstract description 13
- 150000002752 molybdenum compounds Chemical class 0.000 claims abstract description 13
- 150000003839 salts Chemical class 0.000 claims abstract description 9
- 150000003014 phosphoric acid esters Chemical class 0.000 claims abstract description 6
- 125000001183 hydrocarbyl group Chemical group 0.000 claims abstract 2
- 239000002270 dispersing agent Substances 0.000 claims description 24
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- -1 polyol esters Chemical class 0.000 description 65
- 229960001860 salicylate Drugs 0.000 description 24
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 description 22
- 150000001875 compounds Chemical class 0.000 description 20
- 239000003599 detergent Substances 0.000 description 19
- 150000002430 hydrocarbons Chemical group 0.000 description 16
- 239000003921 oil Substances 0.000 description 16
- 125000003118 aryl group Chemical group 0.000 description 13
- 239000002585 base Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 230000001603 reducing effect Effects 0.000 description 11
- 239000002904 solvent Substances 0.000 description 11
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 11
- 239000003963 antioxidant agent Substances 0.000 description 10
- 235000006708 antioxidants Nutrition 0.000 description 10
- 230000003078 antioxidant effect Effects 0.000 description 9
- 239000003446 ligand Substances 0.000 description 9
- 229910052698 phosphorus Inorganic materials 0.000 description 9
- 239000011574 phosphorus Substances 0.000 description 9
- 229920000768 polyamine Polymers 0.000 description 9
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 description 8
- 239000011707 mineral Substances 0.000 description 8
- 238000007670 refining Methods 0.000 description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 7
- 239000002253 acid Substances 0.000 description 7
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 7
- 150000001336 alkenes Chemical class 0.000 description 7
- 229910052791 calcium Inorganic materials 0.000 description 7
- 239000011575 calcium Substances 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 239000011701 zinc Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 239000000654 additive Substances 0.000 description 6
- 229910052783 alkali metal Inorganic materials 0.000 description 6
- 150000001340 alkali metals Chemical class 0.000 description 6
- 150000002148 esters Chemical class 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- KHYKFSXXGRUKRE-UHFFFAOYSA-J molybdenum(4+) tetracarbamodithioate Chemical class C(N)([S-])=S.[Mo+4].C(N)([S-])=S.C(N)([S-])=S.C(N)([S-])=S KHYKFSXXGRUKRE-UHFFFAOYSA-J 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000005069 Extreme pressure additive Substances 0.000 description 5
- XYRMLECORMNZEY-UHFFFAOYSA-B [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S Chemical class [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S XYRMLECORMNZEY-UHFFFAOYSA-B 0.000 description 5
- 238000004517 catalytic hydrocracking Methods 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 5
- 239000002480 mineral oil Substances 0.000 description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 5
- 229960002317 succinimide Drugs 0.000 description 5
- 239000004711 α-olefin Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 150000001342 alkaline earth metals Chemical class 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 4
- WGQKYBSKWIADBV-UHFFFAOYSA-N benzylamine Chemical compound NCC1=CC=CC=C1 WGQKYBSKWIADBV-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000004927 clay Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 150000002170 ethers Chemical class 0.000 description 4
- 239000003112 inhibitor Substances 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 4
- 125000000962 organic group Chemical group 0.000 description 4
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 4
- 229920013639 polyalphaolefin Polymers 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 4
- 229960004889 salicylic acid Drugs 0.000 description 4
- PTISTKLWEJDJID-UHFFFAOYSA-N sulfanylidenemolybdenum Chemical class [Mo]=S PTISTKLWEJDJID-UHFFFAOYSA-N 0.000 description 4
- RMSGQZDGSZOJMU-UHFFFAOYSA-N 1-butyl-2-phenylbenzene Chemical group CCCCC1=CC=CC=C1C1=CC=CC=C1 RMSGQZDGSZOJMU-UHFFFAOYSA-N 0.000 description 3
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 3
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 3
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 3
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Chemical group CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 125000002877 alkyl aryl group Chemical group 0.000 description 3
- 239000002518 antifoaming agent Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 125000000753 cycloalkyl group Chemical group 0.000 description 3
- 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 3
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 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 3
- 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 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 125000002960 margaryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 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 3
- LSHROXHEILXKHM-UHFFFAOYSA-N n'-[2-[2-[2-(2-aminoethylamino)ethylamino]ethylamino]ethyl]ethane-1,2-diamine Chemical compound NCCNCCNCCNCCNCCN LSHROXHEILXKHM-UHFFFAOYSA-N 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 3
- 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 3
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 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 3
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 3
- 229920000193 polymethacrylate Polymers 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 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 3
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 3
- 125000003944 tolyl group Chemical group 0.000 description 3
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 229960001124 trientine Drugs 0.000 description 3
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 2
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 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 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 238000010306 acid treatment Methods 0.000 description 2
- 125000003710 aryl alkyl group Chemical group 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 150000001721 carbon Chemical group 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000003925 fat Substances 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 239000006078 metal deactivator Substances 0.000 description 2
- 229910000000 metal hydroxide Inorganic materials 0.000 description 2
- 150000004692 metal hydroxides Chemical class 0.000 description 2
- OSWPMRLSEDHDFF-UHFFFAOYSA-N methyl salicylate Chemical class COC(=O)C1=CC=CC=C1O OSWPMRLSEDHDFF-UHFFFAOYSA-N 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920001083 polybutene Polymers 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical compound OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 description 2
- CQRYARSYNCAZFO-UHFFFAOYSA-N salicyl alcohol Chemical class OCC1=CC=CC=C1O CQRYARSYNCAZFO-UHFFFAOYSA-N 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229940014800 succinic anhydride Drugs 0.000 description 2
- ARCGXLSVLAOJQL-UHFFFAOYSA-N trimellitic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 2
- 238000005292 vacuum distillation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- BXLYEXBWCGDPPL-UHFFFAOYSA-N (2-butylphenoxy)-(2-butylphenyl)sulfanyl-hydroxy-sulfanylidene-lambda5-phosphane Chemical compound CCCCC1=CC=CC=C1OP(O)(=S)SC1=CC=CC=C1CCCC BXLYEXBWCGDPPL-UHFFFAOYSA-N 0.000 description 1
- UGUHFDPGDQDVGX-UHFFFAOYSA-N 1,2,3-thiadiazole Chemical compound C1=CSN=N1 UGUHFDPGDQDVGX-UHFFFAOYSA-N 0.000 description 1
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical class C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-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
- GSOYMOAPJZYXTB-UHFFFAOYSA-N 2,6-ditert-butyl-4-(3,5-ditert-butyl-4-hydroxyphenyl)phenol Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(C=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 GSOYMOAPJZYXTB-UHFFFAOYSA-N 0.000 description 1
- VRMHHVOBVLFRFB-UHFFFAOYSA-N 2-(2-cyanoethylsulfanylmethyl)benzoic acid Chemical compound OC(=O)C1=CC=CC=C1CSCCC#N VRMHHVOBVLFRFB-UHFFFAOYSA-N 0.000 description 1
- LLEFDCACDRGBKD-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;nonanoic acid Chemical compound CCC(CO)(CO)CO.CCCCCCCCC(O)=O LLEFDCACDRGBKD-UHFFFAOYSA-N 0.000 description 1
- CWTQBXKJKDAOSQ-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;octanoic acid Chemical compound CCC(CO)(CO)CO.CCCCCCCC(O)=O CWTQBXKJKDAOSQ-UHFFFAOYSA-N 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000003107 substituted aryl group Chemical group 0.000 description 1
- 150000005846 sugar alcohols Chemical class 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 125000005063 tetradecenyl group Chemical group C(=CCCCCCCCCCCCC)* 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 150000003580 thiophosphoric acid esters Chemical class 0.000 description 1
- 125000005040 tridecenyl group Chemical group C(=CCCCCCCCCCCC)* 0.000 description 1
- 125000005065 undecenyl group Chemical group C(=CCCCCCCCCC)* 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 125000005023 xylyl group Chemical group 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
- C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
- C10M137/12—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having a phosphorus-to-carbon bond
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/12—Thio-acids; Thiocyanates; Derivatives thereof
- C10M135/14—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond
- C10M135/18—Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the groups
-
- 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
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/26—Overbased carboxylic acid salts
- C10M2207/262—Overbased carboxylic acid salts derived from hydroxy substituted aromatic acids, e.g. salicylates
-
- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/28—Amides; Imides
-
- 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
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
- C10M2219/062—Thio-acids; Thiocyanates; Derivatives thereof having carbon-to-sulfur double bonds
- C10M2219/066—Thiocarbamic type compounds
- C10M2219/068—Thiocarbamate metal 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
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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
- C10N2010/00—Metal present as such or in compounds
- C10N2010/12—Groups 6 or 16
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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
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/40—Low content or no content compositions
- C10N2030/43—Sulfur free or low sulfur content compositions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/40—Low content or no content compositions
- C10N2030/44—Boron free or low content boron compositions
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/52—Base number [TBN]
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/25—Internal-combustion engines
-
- 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
- C10N2040/25—Internal-combustion engines
- C10N2040/252—Diesel engines
-
- 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
- C10N2040/25—Internal-combustion engines
- C10N2040/255—Gasoline engines
Definitions
- the present invention relates to a novel lubricating oil composition, more specifically such a lubricating oil composition produced by blending a base oil with a phosphoric acid ester metal salt and a molybdenum friction modifier with a specific structure and having excellent friction-reducing properties.
- the present invention relates to a lubricating oil composition suitably used as an internal combustion engine lubricating oil.
- lubricating oil has been used in an internal combustion engine, a transmission or grease to allow the smooth operation thereof.
- a lubricating oil (engine oil) for an internal combustion engine is required to exhibit performances of higher levels because internal combustion engines have been improved in performances, enhanced in output and used under severe working conditions.
- conventional engine oils have contained various additives such as an antiwear agent, a metallic detergent, an ashless dispersant, and an anti-oxidant (for example, see Patent Literatures 1 to 3 below).
- a lubricating oil which contains various additives such as a friction modifier (FM) in combination for reducing the friction loss and fuel consumption since energy loss is large at friction parts where the oil is involved (see, for example, Patent Literature 4).
- FM friction modifier
- a friction reducing technique where zinc dialkyldithiophosphate (ZDTP) is used in combination with a molybdenum compound is most common, but unless the molybdenum compound is blended in a relatively large amount, excellent friction-reducing properties cannot be obtained.
- both the molybdenum compound and ZDTP are metal-based and if used in a lubricating oil for an internal combustion engine causes a trouble that they contaminate an exhaust-gas after-treatment system and consequently reduce the purification efficiency thereof.
- the use of a molybdenum compound in a large amount may possibly lead to an increase in deposit or adversely affect sealing materials due to its degradation, and thus a sufficient friction reducing effect is desirously exhibited with the molybdenum compound in an amount as small as possible.
- the present invention has an object to provide a lubricating oil composition to be used for internal combustion engines, automatic transmissions or in greases that can exhibit excellent friction-reducing properties even with a small amount of molybdenum and is particularly suitably used as an internal combustion engine lubricating oil.
- the present invention relates to a lubricating oil composition
- a lubricating oil composition comprising a lubricating base oil, (A) a phosphoric acid ester metal salt represented by formula (1) and (B) an organic molybdenum compound with a ratio of molybdenum to sulfur of 1: 3.5 or greater: wherein R 1 to R 4 are each a hydrocarbon group having 1 to 30 carbon atoms, an alkyl or alkenyl group having 1 to 30 carbon atoms, or an alkylthioethyl comprising an alkyl group having 1 to 30 carbon atoms and may be the same or different from each other; X 1 , X 2 , X 3 and X 4 are each sulfur or oxygen, either X 1 or X 2 is oxygen or both are oxygen, and either X 3 or X 4 is oxygen or both are oxygen; and Y is a metal element.
- the present invention can provide a lubricating oil composition which can suppress the properties thereof from degrading and alleviate the adverse effect on an exhaust-gas after-treatment system with a small amount of molybdenum and further can decrease sufficiently friction under mixed lubricating conditions and is excellent in friction loss reduction and fuel consumption reduction properties.
- lubricating base oils used in the lubricating oil composition of the present invention include mineral base oils and/or synthetic base oils.
- mineral base oil examples include paraffinic mineral base oils which can be produced by subjecting a lubricating oil fraction produced by atmospheric- and/or vacuum-distillation of a crude oil, to any one of or any suitable combination of refining processes selected from solvent deasphalting, solvent extraction, hydrocracking, hydroisomerizing, solvent dewaxing, catalytic dewaxing, hydrorefining, sulfuric acid treatment, and clay treatment; n-paraffins; and iso-paraffins.
- paraffinic mineral base oils which can be produced by subjecting a lubricating oil fraction produced by atmospheric- and/or vacuum-distillation of a crude oil, to any one of or any suitable combination of refining processes selected from solvent deasphalting, solvent extraction, hydrocracking, hydroisomerizing, solvent dewaxing, catalytic dewaxing, hydrorefining, sulfuric acid treatment, and clay treatment; n-paraffins; and iso-paraffins.
- Examples of preferred mineral base oils include base oils produced by refining the following base oils (1) to (7) and/or lubricating oil fractions recovered therefrom in a given process to recover lubricating oil fractions:
- the above-mentioned given refining process is preferably hydrorefining such as hydrocracking or hydrofinishing, solvent refining such as furfural extraction, dewaxing such as solvent dewaxing and catalytic dewaxing, clay refining with acidic clay or active clay, or chemical (acid or alkali) refining such as sulfuric acid treatment and sodium hydroxide treatment.
- hydrorefining such as hydrocracking or hydrofinishing
- solvent refining such as furfural extraction
- dewaxing such as solvent dewaxing and catalytic dewaxing
- clay refining with acidic clay or active clay or chemical (acid or alkali) refining
- chemical (acid or alkali) refining such as sulfuric acid treatment and sodium hydroxide treatment.
- the mineral base oil is particularly preferably the following base oil (8) :
- a solvent refining process and/or hydrofinishing process may be additionally carried out at appropriate timing upon production of the above lubricating base oil (8).
- the sulfur content of the mineral base oil which is. however, preferably 100 ppm by mass or less, more preferably 50 ppm by mass or less, more preferably 10 ppm by mass or less, and particularly preferably 5 ppm by mass or less with the objective of further improving the thermal/oxidation stability and reducing the sulfur content.
- the %C A of the mineral base oil is preferably 2 or less, more preferably 1 or less, more preferably 0.8 or less, particularly preferably 0.5 or less, most preferably 0. If the %C A is greater than 2, the resulting composition would tend to be degraded in viscosity-temperature characteristics, thermal/oxidation stability and fuel efficiency.
- the lubricating base oil used in the present invention may be a synthetic base oil.
- synthetic base oils include poly- ⁇ -olefins and hydrogenated compounds thereof; isobutene oligomers and hydrogenated compounds thereof; paraffins; alkylbenzenes; alkylnaphthalenes; diesters such as ditridecyl glutarate, di-2-ethylhexyl adipate, diisodecyl adipate, ditridecyl adipate and di-2-ethylhexyl sebacate; polyol esters such as trimethylolpropane caprylate, trimethylolpropane pelargonate, pentaerythritol 2-ethylhexanoate and pentaerythritol pelargonate; polyoxyalkylene glycols; dialkyldiphenyl ethers; and polyphenyl ethers.
- Preferred synthetic lubricating base oils are poly- ⁇ -olefins.
- Typical examples of poly- ⁇ -olefins include oligomers or cooligomers of ⁇ -olefins having 2 to 32, preferably 6 to 16 carbon atoms, such as 1-octene oligomer, decene oligomer, ethylene-propylene cooligomer, and hydrogenated compounds thereof.
- the viscosity index of the lubricating base oil used in the present invention is preferably 110 or greater, more preferably 120 or greater, more preferably 125 or greater and preferably 160 or less.
- a viscosity index of less than 110 would not only cause the viscosity-temperature characteristics, thermal/oxidation stability, anti-evaporation properties to degrade but also cause the friction coefficient to increase and cause the anti-wear properties to degrade.
- a viscosity index of greater than 160 would tend to degrade the low temperature viscosity characteristics.
- the viscosity index referred herein denotes the viscosity index measured in accordance with JIS K 2283-1993.
- the 100°C kinematic viscosity of the lubricating base oil used in the present invention is preferably 10 mm 2 /s or less, more preferably 6 mm 2 /s or less, more preferably 5.0 mm 2 /s or less, particularly preferably 4.5 mm 2 /s or less, most preferably 4.2 mm 2 /s or less.
- the kinematic viscosity is preferably 1 mm 2 /s or greater, more preferably 1.5 mm 2 /s or greater, more preferably 2 mm 2 /s or greater, particularly preferably 2. 5 mm 2 /s or greater, most preferably 3 mm 2 /s or greater.
- the 100°C kinematic viscosity referred herein denotes the kinematic viscosity at 100°C defined by ASTM D-445. If the lubricating base oil component has a 100°C kinematic viscosity of greater than 6 mm 2 /s, the resulting composition would be degraded in low temperature viscosity characteristics and may not obtain sufficiently improved fuel economy. It the 100°C kinematic viscosity is less than 1 mm 2 /s, the resulting lubricating oil composition would be poor in lubricity due to its insufficient oil film formation at lubricating sites and would be large in evaporation loss of the composition.
- the above lubricating base oils may be used alone or in combination with one or more types of other base oils.
- the proportion of the base oil of the present invention in the mixed base oil is preferably 30 percent by mass or more, more preferably 50 percent by mass or more, more preferably 70 percent by mass or more.
- examples of the other mineral base oils include solvent-refined mineral oils, hydrocracked mineral oils, hydrorefined mineral oils, and solvent-dewaxed mineral oils, all of which have a 100°C kinematic viscosity of greater than 10 mm 2 /s and 200 mm 2 /s or less.
- examples of the other synthetic base oils include those having a 100°C kinematic viscosity outside the range of 1 to 10 mm 2 /s.
- Component (A) of the lubricating oil composition of the present invention is a phosphoric acid ester metal salt represented by formula (1).
- R 1 through R 4 are each a hydrocarbon group having 1 to 30 carbon atoms, an alkyl or alkenyl group having 1 to 30 carbon atoms, or an alkylthioethyl comprising an alkyl group having 1 to 30 carbon atoms and may be the same or different from each other;
- X 1 , X 2 , X 3 and X 4 are each sulfur or oxygen, either X 1 or X 2 is oxygen or both are oxygen, and either X 3 or X 4 is oxygen or both are oxygen; and Y is a metal element.
- hydrocarbon group having 1 to 30 carbon atoms represented by R 1 through R 4 include alkyl, cycloalkyl or alkenyl, alkyl-substituted cycloalkyl, aryl, alkyl-substituted aryl, and arylalkyl groups.
- alkyl group examples include those such as methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, and octadecyl groups (these alkyl groups may be straight-chain or branched).
- cycloalkyl group examples include those having 5 to 7 carbon atoms, such as cyclopentyl, cyclohexyl and cycloheptyl groups.
- alkylcycloalkyl group examples include those, of which the alkyl groups may bond to any position of the cycloalkyl group, having 6 to 11 carbon atoms, such as methylcyclopentyl, dimethylcyclopentyl, methylethylcyclopentyl, diethylcyclopentyl, methylcyclohexyl, dimethylcyclohexyl, methylethylcyclohexyl, diethylcyclohexyl, methylcycloheptyl, dimethylcycloheptyl, methylethylcycloheptyl and diethylcycloheptyl groups.
- alkenyl group examples include those, which may be straight-chain or branched and the position of which the double bond may vary, such as butenyl, pentenyl, hexenyl, heptenyl, octenyl, nonenyl, decenyl, undecenyl, dodecenyl, tridecenyl, tetradecenyl, pentadecenyl, hexadecenyl, heptadecenyl, and octadecenyl groups.
- aryl group examples include those such as phenyl and naphthyl groups.
- alkylaryl group examples include those, of which the alkyl groups may be straight-chain or branched and bond to any position of the aryl group, having 7 to 18 carbon groups, such as tolyl, xylyl, ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, hexylphenyl, heptylphenyl, octyphenyl, nonylphenyl, decylphenyl, undecylphenyl, and dodecylphenyl groups.
- arylalkyl group examples include those, of which the alkyl groups may be straight-chain or branched, having 7 to 12 carbon atoms, such as benzyl, phenylethyl, phenylpropyl, phneylbutyl, phenylpentyl and phenylhexyl groups.
- the hydrocarbon group having 1 to 30 carbon atoms represented by R 1 through R 4 is preferably an alkyl group having 1 to 30 carbon atoms or an aryl group having 6 to 24 carbon atoms, more preferably an alkyl group having 3 to 18 carbon atoms, most preferably a straight-chain alkyl group having 4 to 8 carbon atoms.
- the metal represented by Y include alkali metals such as lithium, sodium, potassium and cesium, alkaline earth metals such as calcium, magnesium and barium, and heavy metals such as zinc, copper, iron, lead, nickel, silver, manganese and molybdenum.
- alkali metals such as lithium, sodium, potassium and cesium
- alkaline earth metals such as calcium, magnesium and barium
- heavy metals such as zinc, copper, iron, lead, nickel, silver, manganese and molybdenum.
- zinc, molybdenum, and alkaline earth metals such as calcium. Particularly preferred is zinc.
- the coordination number of a phosphorus compound varies depending on the valence of the metal and for example, zinc and calcium, which are divalent presumably form complexes wherein two phosphorus compounds coordinate to one metal atom.
- the content of Component (A) of the lubricating oil composition of the present invention is preferably 0.005 percent by mass or more, more preferably 0.02 percent by mass or more, particularly preferably 0.05 percent by mass or more and also preferably 0.5 percent by mass or less, more preferably 0.2 percent by mass or less, and particularly preferably 0.1 percent by mass or less, on the basis of phosphorus based on the total mass of the composition. If the content of Component (A) is less than 0.005 percent by mass on the basis of phosphorus based on the total mass of the composition, the resulting composition is less effective in anti-wear properties. If the content is more than 0.5 percent by mass, there may be a fear that phosphorus adversely affects an exhaust-gas after-treatment system.
- a sulfur-containing compound may also be contained within the above-described range of phosphorus amount, and the content of the compound is preferably 0.1 percent by mass or less, more preferably 0.08 percent by mass or less on the basis of sulfur.
- Component (B) of the lubricating oil composition of the present invention is an organic molybdenum compound wherein the ratio of molybdenum to sulfur is 1: 3.5 or greater.
- Examples of the organic molybdenum compound used as Component (B) include (B1) sulfurized molybdenum dithiocarbamates, (B2) sulfurized molybdenum dithiophosphates and (B3) oil-soluble trinuclear molybdenum-sulfur compounds.
- Component (B1) i.e., the sulfurized molybdenum dithiocarbamate used in the present invention is an organic molybdenum compound represented by formula(2) below where the ratio of sulfur to molybdenum is 3.5 or greater.
- R 1 , R 2 , R 3 and R 4 may be the same or different from each other and are each a hydrocarbon group such as an alkyl group having 2 to 24, preferably 4 to 13 carbon atoms or an aryl group (including alkylaryl group) having 6 to 24, preferably 8 to 15carbon atoms.
- X 1 , X 2 , X 3 and X 4 may be the same or different from each other and are each sulfur or oxygen.
- alkyl group examples include ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl and octadecyl groups.
- These alkyl groups may be primary, secondary or tertiary alkyl groups and straight-chain or branched.
- (alkyl)aryl groups include phenyl, tolyl, ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, hexylphenyl, octylphenyl, nonylphenyl, decylphenyl, undecylphenyl, and dodecylphenyl groups, all of which alkyl groups may be primary, secondary or tertiary alkyl groups and straight-chain or branched.
- the (alkyl)aryl groups include all positional isomers wherein the aryl group may possess an alkyl substituent at any position.
- Component (B1) i.e., sulfurized molybdenum dithiocarbamates
- sulfurized molybdenum diethyldithiocarbamate sulfurized molybdenum dipropyldithiocarbamate, sulfurized molybdenum dibutyldithiocarbamate, sulfurized molybdenum dipentyldithiocarbamate, sulfurized molybdenum dihexyldithiocarbamate, sulfurized molybdenum dioctyldithiocarbamate, sulfurized molybdenum didecyldithiocarbamate, sulfurized molybdenum didodecyldithiocarbamate, sulfurized molybdenum di(butylphenyl)dithiocarbamate, sulfurized molybdenum di(nonylphenyl)dithiocarbamate, sulfurized oxymolybdenum diethyldithiocarbamate
- Component (B2) i.e., the sulfurized molybdenum dithiophosphates used in the present invention is an organic molybdenum compound represented by formula(3) below wherein the ratio of sulfur to molybdenum is 3.5 or greater.
- R 5 , R 6 , R 7 and R 8 may be the same or different from each other and are each a hydrocarbon group such as an alkyl group having 2 to 30, preferably 5 to 18, more preferably 5 to 12 carbon atoms or an aryl group (including alkylaryl group) having 6 to 18 carbon atoms.
- Y 1 , Y 2 , Y 3 and Y 4 may be the same or different from each other and are each sulfur or oxygen.
- alkyl group examples include ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl and octadecyl groups.
- These alkyl groups may be primary, secondary or tertiary alkyl groups and straight-chain or branched.
- (alkyl)aryl groups include phenyl, tolyl, ethylphenyl, propylphenyl, butylphenyl, pentylphenyl, hexylphenyl, octylphenyl, nonylphenyl, decylphenyl, undecylphenyl, and dodecylphenyl groups, all of which alkyl groups may be primary, secondary or tertiary alkyl groups and straight--chain or branched.
- the (alkyl)aryl groups include all positional isomers wherein the aryl group may possess an alkyl substituent at any position.
- Component (B2) i.e., the sulfurized molybdenum dithiophosphates include sulfurized molybdenum diethyldithiophosphate, sulfurized molybdenum dipropyldithiophosphate, sulfurized molybdenum dibutyldithiophosphate, sulfurized molybdenum dipentyldithiophosphate, sulfurized molybdenum dihexyldithiophosphate, sulfurized molybdenum dioctyldithiophosphate, sulfurized molybdenum didecyldithiophosphate, sulfurized molybdenum didodecyldithiophosphate, sulfurized molybdenum di(butylphenyl)dithlophosphate, sulfurized molybdenum di(nonylphenyl)dithiophosphate, sulfurized oxymolybdenum diethyldithiophosphate, sulfurized oxymolybdenum die
- Component (B3) i.e., oil-soluble trinuclear molybdenum-sulfur compounds used in the present invention is an organic molybdenum compound represented by formula (4) wherein the ratio of sulfur to molybdenum is 3.5 or greater.
- L is a ligand having an organic group with a sufficient number of carbon atoms to render the compound soluble or dispersible in the oil and n is an integer of 1 to 4.
- n is any of 2 to 4
- Ls may be the same or different from each other.
- k is an integer of 4 to 7
- Q is selected from neutral electron-donating compounds such as water, amine, alcohol, phosphine and ether
- z is an integer of 0 to 5 and includes non-stoichiometric values.
- Qs may be the same or different from each other.
- L could be independently selected from the group consisting of -X-R, -(X1)(X2)CR, -(X1)(X2)CYR, -(X1)(X2)CN(R1)(R2), -(X1)(X2)P(OR1)(OR2), mixtures thereof and perthio derivatives thereof.
- X, X1, X2 and Y are each independently selected from oxygen and sulfur
- R, R1 and R2 are each independently selected from hydrogen and organic groups (may be the same or different type).
- the organic group is a hydrocarbon group such as an alkyl (for example, in which the carbon atom attached to the remainder of the ligand is primary, secondary or tertiary), aryl, substituted aryl and ether groups. More preferably, all the ligands are the same.
- the organic groups of the ligands have a sufficient number of carbon atoms to render the compounds soluble or dispersible in the oil.
- the carbon atom number in each group is generally from 1 to 100, preferably from 1 to 30, more preferably from 4 to 20.
- Preferred ligands include dialkyldithiophosphate, alkylxanthates and dialkyldithiocarbamates, among which particulalry preferred are dialkyldithiocarbamates.
- An organic ligand containing two or more types of the aforesaid functionalities are also capable of binding to one or more core and serving as ligands.
- appropriate ligands having suitable charge to balance the corresponding core's charge are preferably selected.
- sulfurized molybdenum dithiocarbamate, sulfurized molybdenum dithiophosphate or oil-soluble trinuclear molybdenum-sulfur compound may each be used alone as Component (B), the sulfurized molybdenum dithiocarbamate is preferred because of its effect or no phosphorus content.
- An oil-soluble trinuclear molybdenum-sulfur compound whose ligand contains no phosphorus compound is also preferred.
- this ligand is more preferably a dialkyldithiocarbamate.
- the use of (B1) the sulfurized molybdenum dithiocarbamate in combination with (B2) the sulfurized molybdenum dithiophosphate is also effective from the viewpoint of properties.
- the ratio of the content of Component (B1) to the total amount of Components (B1) and (B2) is preferably from 50 to 95 percent by mass, more preferably from 60 to 95 percent by mass, more preferably from 70 to 95 percent by mass on the basis of molybdenum.
- the ratio of the sulfur to the molybdenum in Component (B) is necessarily 3.5 or greater, preferably 4 or greater, more preferably 5 or greater. If the ratio of the sulfur to the molybdenum is less than 3.5, the low friction properties would be degraded.
- the content of Component (B) in the lubricating oil composition of the present invention is preferably 10 ppm by mass or more, more preferably 50 ppm by mass or more, more preferably 100 ppm by mass or more, particularly preferably 200 ppm by mass or more on the basis of molybdenum based on the total mass of the lubricating oil composition from the viewpoint of friction reducing effect.
- the content is preferably 600 ppm by mass or less, more preferably 500 ppm by mass or less, particularly preferably 300 ppm by mass or less from the viewpoint of solubility in the lubricating base oil, storage stability, oxidation stability, and further economic efficiency.
- Component (B) exceeds 600 ppm by mass and in particular if a poly ⁇ -olefin or a hydrogenated compound thereof is used as the lubricating base oil, Component (B) may not be sufficiently dissolved in the base oil and possibly precipitate during a long period of storage. Furthermore, the content is not preferred from the viewpoint of economic efficiency.
- the lubricating oil composition of the present invention may be blended with any additives that have been generally used in a lubricating oil depending on the purposes in order to further enhance the properties.
- additives include metallic detergents, ashless dispersants, viscosity index improvers, antiwear agents (or extreme pressure additive), anti-oxidants, corrosion inhibitors, rust inhibitors, demulsifiers, metal deactivators, and anti-foaming agents.
- Examples of the metallic detergents include normal or basic alkali metal or alkaline earth metal salicylates, normal or basic alkali metal or alkaline earth metal sulfonates, and normal or basic alkali metal or alkaline earth metal phenates.
- Examples of the alkali metal include sodium and potassium.
- Examples of the alkaline earth metal include magnesium, calcium and barium. Preferred are magnesium and calcium. Particularly preferred is calcium.
- alkali metal or alkaline earth metal salicylate detergents are preferred from the viewpoint of their friction reducing effect.
- the metallic salicylate detergent examples include: a neutral metal salicylate produced by preparing a salicylic acid to which an equimolar amount of a hydrocarbon group (for example, olefin of 8 to 30 carbon atoms) has been added or alternatively a salicylic acid having one hydrocarbon group of 8 to 30 carbon atoms produced by adding to phenol an equimolar amount of a hydrocarbon group (for example, olefin having 8 to 30 carbon atoms), followed by carboxylation with carbon dioxide and then allowing such a salicylic acid to act with a stoichiometric amount of a metal salt or metal base; a basic metal salicylate produced by heating such a neutral metal salicylate with an excess amount of a metal salt or metal base (metal hydroxide or oxide) in the presence of water; and an overbased (ultrabasic) metal salicylate produced by reacting carbon dioxide, boric acid or borate with a base such as a metal hydroxide in the presence of the above neutral metal
- the olefin having 8 to 30 carbon atoms used for the synthesis of salicylate is usually classified broadly to a group of olefins 8 to 19 carbon atoms and a group of olefins of 20 to 30 carbon atoms and thus a salicylic acid to which the hydrocarbon group of each olefin is added is synthesized.
- the hydrocarbon group is preferably an alkyl group derived from a polymer or copolymer of ethylene, propylene or butylene, particularly preferably an alkyl group derived from a straight-chain ⁇ -olefin such as an ethylene polymer.
- the metallic salicylate detergent may be a metal salicylate having a hydrocarbon group of 8 to 19 carbon atoms (for example, an alkyl group of 8 to 19 carbon atoms) (hereinafter often referred to as "metal salicylate C-a”) or a metal salicylate having a hydrocarbon group of 20 to 30 carbon atoms (for example, an alkyl group of 20 to 30 carbon atoms) (hereinafter often referred to as "metal salicylate C-b”), either or both of which may be used alone or in combination. From the viewpoint of friction reducing effect, metal salicylate C-b is preferred. Whereas, with the objective of improving synergistically the storage stability and low temperature fluidity, metal salicylates C-a and C-b may be used in combination.
- the metallic salicylate detergent is usually produced by being reacted in a diluent such as solvent or lubricating base oil.
- the lower limit of metal content of the metallic salicylate detergent produced in such a manner is preferably 1.0 percent by mass or more, more preferably 2.0 percent by mass or more, more preferably 5.0 percent by mass or more, particularly preferably 7.0 percent by mass or more based on the total mass of the metallic salicylate detergent.
- the upper limit metal content is preferably 20 percent by mass or less, more preferably 15 percent by mass or less, more preferably 12 percent by mass or less, particularly preferably 10 percent by mass or less.
- an overbased salicylate detergent adjusted in the lower limit base number preferably 50 mgKOH/g or greater, more preferably 100 mgKOH/g or greater, more preferably 150 mgKOH/g or greater, particularly preferably 200 mgKOH/g or greater, as the main component. It is also preferred to use an overbased salicylate detergent adjusted in the upper limit base number to preferably 400 mgKOH/g or lower, more preferably 300 mgKOH/g or lower, more preferably 250 mgKOH/g or lower, as the main component.
- base number denotes the value measured by the perchloric acid potentiometric titration method in accordance with section 7 of JIS K2501 "Petroleum products and lubricants-Determination of neutralization number".
- metal ratio of the metallic salicylate detergent No particular limitation is imposed on the metal ratio of the metallic salicylate detergent. Generally, one or more types of detergents with a metal ratio of 20 or less may be used. The metal ratio is preferably less than 4.5, more preferably 3 or less.
- the term "metal ratio" used herein is represented by (valence of metal element in a salicylate detergent) x (metal element content (mole%)) / (soap group content (mole%)).
- the metal element denotes calcium and magnesium.
- the soap group denotes a salicylic acid group.
- the content of the detergent is preferably 0.1 percent by mass or more, more preferably 0.5 percent by mass or more, more preferably 1 percent by mass or more based on the total mass of the composition.
- the content is also preferably 15 percent by mass or less, more preferably 10 percent by mass or less, more preferably 5 percent by mass or less, particularly preferably 3 percent by mass or less. If the content is less than 0.1 percent by mass, the friction reducing effect would last only for a short period of time. If the content exceeds 15 percent by mass, an advantageous effect as balanced with the content would not be obtained.
- the lower limit metal content is preferably 0.01 percent by mass or more, more preferably 0.05 percent by mass or more, more preferably 0.1 percent by mass or more, particularly preferably 0.15 percent by mass or more.
- the upper limit is preferably 1.5 percent by mass or less, more preferably 1.0 percent by mass or less, more preferably 0.5 percent by mass or less, particularly preferably 0.3 percent by mass or less. If the metal content is less than 0.01 percent by mass, the friction reducing effect would last only for a short period of time. If the metal content exceeds 1.5 percent by mass, an advantageous effect as balanced with the content would not be obtained.
- ashless dispersant examples include nitrogen-containing compounds having in their molecules at least one straight-chain or branched alkyl or alkenyl group having 40 to 400 and derivatives thereof and modified products of alkenylsuccinicimides. Any one or more types selected from these ashless dispersants may be blended in the lubricating oil composition of the present invention.
- the carbon number of the alkyl or alkenyl group of the ashless dispersant is preferably 40 to 400, more preferably 60 to 350. If the carbon number of the alkyl or alkenyl group is fewer than 40, the ashless dispersant would tend to be degraded in solubility in the lubricating base oil. Whereas, if the carbon number of the alkyl or alkenyl group is more than 400, the resulting lubricating oil composition would be degraded in low-temperature fluidity.
- the alkyl or alkenyl group may be straight-chain or branched but is preferably a branched alkyl or alkenyl group derived from oligomers of olefins such as propylene, 1-butene or isobutylene or a cooligomer of ethylene and propylene.
- the succinimide includes a mono-type succinimide wherein a succinic anhydride is added to one end of a polyamine, as represented by formula (5) and a bis-type succinimide wherein a succinic anhydride is added to both ends of a polyamine, as represented by formula (6).
- R 9 is an alkyl or alkenyl group having 40 to 400, preferably 60 to 350 carbon atoms, and p is an integer of 1 to 5, preferably 2 to 4.
- R 10 and R 11 may be the same or different from one another and are each independently an alkyl or alkenyl group having 40 to 400, preferably 60 to 350 carbon atoms, and particularly preferably a polybutenyl group, and q is an integer of 0 to 4, preferably 1 to 3.
- the lubricating oil composition of the present invention may contain either one or both of the mono-type and bis-type succinimides.
- succinimides No particular limitation is imposed on the method of producing these succinimides.
- a method may be used, wherein an alkyl or alkenyl succinimide produced by reacting a compound having an alkyl or alkenyl group having 40 to 400 carbon atoms with maleic anhydride at a temperature of 100 to 200°C is reacted with a polyamine.
- the polyamine include diethylene triamine, triethylene tetramine, tetraethylene pentamine, and pentaethylene hexamine.
- any ashless dispersant selected from the above-described succinimide and/or derivatives thereof may be used, and their weight-average molecular weight is preferably 6,500 or greater, more preferably 7,000 or greater, more preferably 8,000 or greater, particularly preferably 9,000 or greater. If the weight-average molecular weight is smaller than 6,500, the molecular weight of the non-polar group polybutenyl groups would be smaller, and thus the sludge dispersibility would be poor and also the oxidation stability would be poor due to a relative increase in the amine portion of the polar groups, which could be active sites of oxidation degradation and thus would fail to obtain an working life extending effect. On the other hand, no particular limitation is imposed on the upper limit. However, it is preferably 20,000 or smaller, more preferably 15,000 or smaller with the objective of preventing the low temperature viscosity characteristics from degrading.
- the weight-average molecular weight referred herein is the weight-average molecular weight based on polystyrene, as measured using a 150-CALC/GPC by Japan Waters Co., equipped with two GMHHR-M (7.8 mm IDx30 cm) columns by Tosoh Corp. in series, with tetrahydrofuran as the solvent, a temperature of 23°C, a flow rate of 1 mL/min, a sample concentration of 1% by mass, a sample injection rate of 75 ⁇ L and a differential refractometer (RI) as the detector.
- RI differential refractometer
- the ashless dispersant may be a benzylamine.
- Preferred examples of the benzylamine include compounds represented by formula (7):
- R 12 is an alkyl or alkenyl group having 40 to 400, preferably 60 to 350 and r is an integer of 1 to 5, preferably 2 to 4.
- benzylamines may be produced by reacting a polyolefin such as a propylene oligomer, polybutene, or ethylene- ⁇ -olefin copolymer with a phenol so as to produce an alkylphenol and then subjecting the alkylphenol to Mannich reaction with formaldehyde and a polyamine such as diethylenetriamine, triethylenetetramine, tetraethylenepentamine, or pentaethylenehexamine.
- a polyolefin such as a propylene oligomer, polybutene, or ethylene- ⁇ -olefin copolymer
- formaldehyde a polyamine
- a polyamine such as diethylenetriamine, triethylenetetramine, tetraethylenepentamine, or pentaethylenehexamine.
- R 13 is an alkyl or alkenyl group having 40 to 400, preferably 60 to 350 and s is an integer of 1 to 5, preferably 2 to 4.
- the polyamines may be produced by chlorinating a polyolefin such as a propylene oligomer, polybutene, or ethylene- ⁇ -olefin copolymer and reacting the chlorinated polyolefin with ammonia or a polyamine such as ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, and pentaethylenehexamine.
- a polyolefin such as a propylene oligomer, polybutene, or ethylene- ⁇ -olefin copolymer
- ammonia or a polyamine such as ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, and pentaethylenehexamine.
- the other derivative include an organic acid-modified compound produced by allowing any of the above-described nitrogen-containing compounds to react with a monocarboxylic acid (fatty acids or the like) having 1 to 30 carbon atoms, a polycarboxylic acid having 2 to 30 carbon atoms, such as oxalic acid, phthalic acid, trimellitic acid, and pyromellitic acid or an oxygen-containing compound such as alcohol, aldehyde, ketone, alkylphenol, cyclic carbonate (for example, ethylene carbonate), hydroxy(poly)alkylene carbonate, so as to neutralize or amidize the whole or part of the remaining amino and/or imino groups; and a sulfur modified-compound produced by allowing any of the above-described nitrogen-containing compounds to react with a sulfur compound.
- a boron-modified compound may also be used.
- the ashless dispersant is preferably any of the aforesaid nitrogen compounds that are not modified with boron.
- the content thereof is preferably from 0.01 to 20 percent by mass, more preferably from 0.1 to 10 percent by mass based on the total mass of the lubricating oil composition. If the ashless dispersant content is less than 0.01 percent by mass, the resulting composition would be insufficient in friction-reducing effect. Whilst, if the content exceeds 20 percent by mass, the resulting lubricating oil composition would be extremely degraded in low temperature fluidity.
- the viscosity index improver is specifically a non-dispersant type or dispersant type ester group-containing viscosity index improver.
- a viscosity index improver examples include non-dispersant type or dispersant type poly(meth)acrylate viscosity index improvers, non-dispersant type or dispersant type olefin-(meth)acrylate copolymer viscosity index improvers, styrene-maleic anhydride ester copolymer viscosity index improvers, and mixtures thereof.
- Preferred are non-dispersant type or dispersant type poly(meth)acrylate viscosity index improvers.
- Particularly preferred are non-dispersant type or dispersant type poly(meth)acrylate viscosity index improvers.
- viscosity index improver examples include non-dispersant type or dispersant type ethylene- ⁇ -olefin copolymers or hydrogenated compounds thereof, polyisobutylene and hydrogenated compounds thereof, styrene-diene hydrogenated copolymers and polyalkylstyrenes.
- the antiwear agent may be any anti-oxidant or extreme pressure additive that has been used for lubricating oil.
- sulfuric-, phosphoric- and sulfuric-phosphoric extreme pressure additives may be used. Specific examples include zinc dialkyldithiophosphate (ZnDTP), phosphorus acid esters, thiophosphorus acid esters, dithiophosphorus acid esters, trithiophosphorus acid esters, phosphoric acid esters, thiophosphoric acid esters, dithiophosphoric acid esters, trithiophosphoric acid esters, amine salts, metal salts or derivatives thereof, dithiocarbamates, zinc dithiocaramates, MoDTC, disulfides, polysulfides, and sulfurized fats and oils.
- sulfuric extreme pressure additives preferred are sulfurized fats and oils.
- the anti-oxidant may be an ashless anti-oxidant such as a phenol- or amine-based anti-oxidant, or a metallic anti-oxidant such as a copper- or molybdenum-based anti-oxidant.
- a phenol-based anti-oxidant include 4,4'-methylene bis(2,6-di-tert-butylphenol) and 4,4'-bis(2,6-di-tert-butylphenol).
- Specific examples of the amine-based anti-oxidant include phenyl- ⁇ -naphthylamines, alkylphenyl- ⁇ -naphthylamines and dialkyldiphenylamines.
- corrosion inhibitor examples include benzotriazole-, tolyltriazole-, thiadiazole-, and imidazole-types compounds.
- rust inhibitor examples include petroleum sulfonates, alkylbenzene sulfonates, dinonylnaphthalene sulfonates, alkenyl succinic acid esters, and polyhydric alcohol esters.
- demulsifier examples include polyalkylene glycol-based non-ionic surfactants such as polyoxyethylenealkyl ethers, polyoxyethylenealkylphenyl ethers, and polyoxyethylenealkylnaphthyl ethers.
- metal deactivator examples include imidazolines, pyrimidine derivatives, alkylthiadiazoles, mercaptobenzothiazoles, benzotriazoles and derivatives thereof, 1,3,4-thiadiazolepolysulfide, 1,3,4-thiadiazolyl-2,5-bisdialkyldithiocarbamate, 2-(alkyldithio)benzoimidazole, and ⁇ -(o-carboxybenzylthio)propionitrile.
- anti-foaming agent examples include silicone oil with a 25°C kinematic viscosity of 1000 to 100,000 mm 2 /s, alkenylsuccinic acid derivatives, esters of polyhydroxy aliphatic alcohols and long-chain fatty acids, aromatic amine salts of methylsalicylate and o-hydroxybenzyl alcohol.
- the anti-foaming agent is contained in an amount of 0.0005 to 1 percent by mass and the other additives are contained in an amount selected from the range of 0.01 to 10 percent by mass on the total composition mass basis.
- Lubricating oil compositions according to the present invention (Examples 1 to 8) and lubricating oil composition (Comparative Examples 1 to 5) for comparison were prepared. These compositions were subjected to a friction test using a high-frequency, linear-oscillation friction tester (SRV, oil temperature: 110°C, load: 400 N, test time: 30 min), and the results are set forth in Table 1.
- SRV linear-oscillation friction tester
- the lubricating oil composition of Examples 1 to 8 are excellent in friction coefficient improvement rate in comparison with the reference oil and is drastically superior in friction-reducing properties to the compositions of Comparative Examples 1 to 5 containing no Component (A) or Component (B).
- the lubricating oil composition of the present invention can be generally used in lubricating oils that are required to exhibit a friction reducing effect. Furthermore, the composition can be suitably used not only as gear oils for transmissions or final reduction gears of automobiles and but also for internal combustion engines such as gasoline engines, diesel engines and gas engines for two- and four-wheeled vehicles, power generators and cogenerations. Furthermore, the composition is also useful for various engines such as those for ships and outboard motors.
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011117733A JP5756342B2 (ja) | 2011-05-26 | 2011-05-26 | 潤滑油組成物 |
| PCT/JP2012/051219 WO2012160840A1 (fr) | 2011-05-26 | 2012-01-20 | Composition d'huile lubrifiante |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2716743A1 true EP2716743A1 (fr) | 2014-04-09 |
| EP2716743A4 EP2716743A4 (fr) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| EP12790030.6A Withdrawn EP2716743A4 (fr) | 2011-05-26 | 2012-01-20 | Composition d'huile lubrifiante |
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| Country | Link |
|---|---|
| US (1) | US20140100148A1 (fr) |
| EP (1) | EP2716743A4 (fr) |
| JP (1) | JP5756342B2 (fr) |
| CN (1) | CN103717718B (fr) |
| WO (1) | WO2012160840A1 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021021888A1 (fr) * | 2019-07-29 | 2021-02-04 | Ecolab USA, Inc. | Complexes de molybdène solubles dans l'huile servant d'inhibiteurs d'encrassement à haute température |
| WO2021021891A1 (fr) * | 2019-07-29 | 2021-02-04 | Ecolab Usa Inc. | Complexes de molybdène solubles dans l'huile pour inhiber la corrosion à haute température et utilisations associées dans des raffineries de pétrole |
| WO2022026434A1 (fr) * | 2020-07-29 | 2022-02-03 | Ecolab Usa Inc. | Complexes de molybdène solubles dans l'huile exempts de phophore pour inhiber la corrosion par l'acide naphténique à haute température |
| US11999915B2 (en) | 2020-07-29 | 2024-06-04 | Ecolab Usa Inc. | Phosphorous-free oil soluble molybdenum complexes as high temperature fouling inhibitors |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110799632B (zh) * | 2017-07-11 | 2022-05-03 | 株式会社Adeka | 使有机钼化合物在基油中的分散性长期稳定化的方法 |
| CN111187649B (zh) * | 2020-02-05 | 2022-01-28 | 新疆工程学院 | 一种基于嵌段聚酯化学改性的偏苯三甲酸酯润滑油基础油及其制备方法 |
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-
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- 2012-01-20 EP EP12790030.6A patent/EP2716743A4/fr not_active Withdrawn
- 2012-01-20 CN CN201280037071.8A patent/CN103717718B/zh not_active Expired - Fee Related
- 2012-01-20 US US14/122,074 patent/US20140100148A1/en not_active Abandoned
- 2012-01-20 WO PCT/JP2012/051219 patent/WO2012160840A1/fr active Application Filing
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021021888A1 (fr) * | 2019-07-29 | 2021-02-04 | Ecolab USA, Inc. | Complexes de molybdène solubles dans l'huile servant d'inhibiteurs d'encrassement à haute température |
| WO2021021891A1 (fr) * | 2019-07-29 | 2021-02-04 | Ecolab Usa Inc. | Complexes de molybdène solubles dans l'huile pour inhiber la corrosion à haute température et utilisations associées dans des raffineries de pétrole |
| US20210032528A1 (en) * | 2019-07-29 | 2021-02-04 | Ecolab Usa Inc. | Oil soluble molybdenum complexes as high temperature fouling inhibitors |
| US11697756B2 (en) * | 2019-07-29 | 2023-07-11 | Ecolab Usa Inc. | Oil soluble molybdenum complexes as high temperature fouling inhibitors |
| US11767596B2 (en) | 2019-07-29 | 2023-09-26 | Ecolab Usa Inc. | Oil soluble molybdenum complexes for inhibiting high temperature corrosion and related applications in petroleum refineries |
| WO2022026434A1 (fr) * | 2020-07-29 | 2022-02-03 | Ecolab Usa Inc. | Complexes de molybdène solubles dans l'huile exempts de phophore pour inhiber la corrosion par l'acide naphténique à haute température |
| US11999915B2 (en) | 2020-07-29 | 2024-06-04 | Ecolab Usa Inc. | Phosphorous-free oil soluble molybdenum complexes as high temperature fouling inhibitors |
| US12006483B2 (en) | 2020-07-29 | 2024-06-11 | Ecolab Usa Inc. | Phosphorous-free oil soluble molybdenum complexes for high temperature naphthenic acid corrosion inhibition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012246362A (ja) | 2012-12-13 |
| CN103717718B (zh) | 2016-01-20 |
| WO2012160840A1 (fr) | 2012-11-29 |
| JP5756342B2 (ja) | 2015-07-29 |
| US20140100148A1 (en) | 2014-04-10 |
| EP2716743A4 (fr) | 2014-11-19 |
| CN103717718A (zh) | 2014-04-09 |
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