EP3766948A1 - Composition d'huile lubrifiante - Google Patents
Composition d'huile lubrifiante Download PDFInfo
- Publication number
- EP3766948A1 EP3766948A1 EP19768345.1A EP19768345A EP3766948A1 EP 3766948 A1 EP3766948 A1 EP 3766948A1 EP 19768345 A EP19768345 A EP 19768345A EP 3766948 A1 EP3766948 A1 EP 3766948A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mass
- lubricating oil
- oil composition
- content
- integer
- 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.)
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- 239000000203 mixture Substances 0.000 title claims abstract description 150
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 149
- 229910052751 metal Inorganic materials 0.000 claims abstract description 82
- 239000002184 metal Substances 0.000 claims abstract description 82
- -1 thiadiazole compound Chemical class 0.000 claims abstract description 80
- 239000002253 acid Substances 0.000 claims abstract description 46
- 150000003949 imides Chemical class 0.000 claims abstract description 41
- 239000003599 detergent Substances 0.000 claims abstract description 29
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 0.000 claims abstract description 29
- 239000002199 base oil Substances 0.000 claims abstract description 27
- 238000002485 combustion reaction Methods 0.000 claims abstract description 21
- 239000002270 dispersing agent Substances 0.000 claims abstract description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical group [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 14
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 26
- 150000001875 compounds Chemical class 0.000 claims description 24
- 125000004432 carbon atom Chemical group C* 0.000 claims description 19
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 229910052698 phosphorus Inorganic materials 0.000 claims description 14
- 229910052717 sulfur Inorganic materials 0.000 claims description 14
- 125000004429 atom Chemical group 0.000 claims description 13
- 229910052796 boron Inorganic materials 0.000 claims description 13
- 125000004434 sulfur atom Chemical group 0.000 claims description 12
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 10
- 229910052750 molybdenum Inorganic materials 0.000 claims description 10
- 229910052705 radium Inorganic materials 0.000 claims description 8
- 229910052701 rubidium Inorganic materials 0.000 claims description 8
- 239000011733 molybdenum Substances 0.000 claims description 5
- 125000004437 phosphorous atom Chemical group 0.000 claims description 5
- 125000005842 heteroatom Chemical group 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 4
- 239000005078 molybdenum compound Substances 0.000 claims description 3
- 150000002752 molybdenum compounds Chemical class 0.000 claims description 3
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 2
- 238000012360 testing method Methods 0.000 description 61
- 238000005260 corrosion Methods 0.000 description 35
- 230000007797 corrosion Effects 0.000 description 35
- 125000000217 alkyl group Chemical group 0.000 description 27
- 239000003921 oil Substances 0.000 description 22
- 239000000654 additive Substances 0.000 description 20
- 239000007789 gas Substances 0.000 description 19
- 239000003963 antioxidant agent Substances 0.000 description 17
- 230000003078 antioxidant effect Effects 0.000 description 17
- 150000002430 hydrocarbons Chemical group 0.000 description 16
- 239000010705 motor oil Substances 0.000 description 15
- 239000011575 calcium Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 14
- 238000002845 discoloration Methods 0.000 description 13
- 230000000996 additive effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 9
- 239000002480 mineral oil Substances 0.000 description 9
- 235000010446 mineral oil Nutrition 0.000 description 9
- 229920001577 copolymer Polymers 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000011282 treatment Methods 0.000 description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical group [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 5
- 125000003342 alkenyl group Chemical group 0.000 description 5
- 150000001412 amines Chemical class 0.000 description 5
- 239000002518 antifoaming agent Substances 0.000 description 5
- 239000002585 base Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000004711 α-olefin Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 238000011835 investigation Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 3
- 101100208720 Homo sapiens USP5 gene Proteins 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 3
- 102100021017 Ubiquitin carboxyl-terminal hydrolase 5 Human genes 0.000 description 3
- 125000002947 alkylene group Chemical group 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- KHYKFSXXGRUKRE-UHFFFAOYSA-J molybdenum(4+) tetracarbamodithioate Chemical compound C(N)([S-])=S.[Mo+4].C(N)([S-])=S.C(N)([S-])=S.C(N)([S-])=S KHYKFSXXGRUKRE-UHFFFAOYSA-J 0.000 description 3
- 229920000768 polyamine Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229920000193 polymethacrylate Polymers 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 229910052702 rhenium Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 239000001993 wax Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- XYRMLECORMNZEY-UHFFFAOYSA-B [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S Chemical compound [Mo+4].[Mo+4].[Mo+4].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S XYRMLECORMNZEY-UHFFFAOYSA-B 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 150000001447 alkali salts Chemical class 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- 150000003939 benzylamines Chemical class 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 150000001639 boron compounds Chemical class 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 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 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000003915 liquefied petroleum gas Substances 0.000 description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000006078 metal deactivator Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- 150000004867 thiadiazoles Chemical group 0.000 description 2
- 239000003981 vehicle Substances 0.000 description 2
- ZLVFDQAVNUNOLC-UHFFFAOYSA-N (2-dodecylphenyl) 2-dodecoxybenzoate Chemical compound CCCCCCCCCCCCOC1=CC=CC=C1C(=O)OC1=CC=CC=C1CCCCCCCCCCCC ZLVFDQAVNUNOLC-UHFFFAOYSA-N 0.000 description 1
- MBIZXFATKUQOOA-UHFFFAOYSA-N 1,3,4-thiadiazole Chemical group C1=NN=CS1 MBIZXFATKUQOOA-UHFFFAOYSA-N 0.000 description 1
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 1
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-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
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 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 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241000233805 Phoenix Species 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- RYYWUUFWQRZTIU-UHFFFAOYSA-N Thiophosphoric acid Chemical class OP(O)(S)=O RYYWUUFWQRZTIU-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 229940045714 alkyl sulfonate alkylating agent Drugs 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- IMUDHTPIFIBORV-UHFFFAOYSA-N aminoethylpiperazine Chemical compound NCCN1CCNCC1 IMUDHTPIFIBORV-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 125000002178 anthracenyl group Chemical group C1(=CC=CC2=CC3=CC=CC=C3C=C12)* 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 150000001565 benzotriazoles Chemical class 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- 229910052810 boron oxide Inorganic materials 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 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
- VHRGRCVQAFMJIZ-UHFFFAOYSA-N cadaverine Chemical compound NCCCCCN VHRGRCVQAFMJIZ-UHFFFAOYSA-N 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
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 150000005676 cyclic carbonates Chemical class 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 125000003493 decenyl group Chemical group [H]C([*])=C([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 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
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 125000005982 diphenylmethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 150000002019 disulfides Chemical class 0.000 description 1
- 125000005066 dodecenyl group Chemical group C(=CCCCCCCCCCC)* 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N formaldehyde Substances O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 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
- 150000002460 imidazoles Chemical class 0.000 description 1
- 150000002462 imidazolines Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 125000002960 margaryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000006178 methyl benzyl group Chemical group 0.000 description 1
- VLAPMBHFAWRUQP-UHFFFAOYSA-L molybdic acid Chemical class O[Mo](O)(=O)=O VLAPMBHFAWRUQP-UHFFFAOYSA-L 0.000 description 1
- 150000002762 monocarboxylic acid derivatives 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
- 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 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 125000005187 nonenyl group Chemical group C(=CCCCCCCC)* 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
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 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
- 235000014593 oils and fats Nutrition 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 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
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- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
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- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- KIDHWZJUCRJVML-UHFFFAOYSA-N putrescine Chemical compound NCCCCN KIDHWZJUCRJVML-UHFFFAOYSA-N 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000003873 salicylate salts Chemical class 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 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
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- 150000003890 succinate salts Chemical class 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 229960002317 succinimide Drugs 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 150000008054 sulfonate salts Chemical class 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229940066771 systemic antihistamines piperazine derivative Drugs 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 125000005063 tetradecenyl group Chemical group C(=CCCCCCCCCCCCC)* 0.000 description 1
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 1
- 150000003558 thiocarbamic acid derivatives Chemical class 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 125000005040 tridecenyl group Chemical group C(=CCCCCCCCCCCC)* 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000005065 undecenyl group Chemical group C(=CCCCCCCCCC)* 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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
- 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
-
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
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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
- C10M101/00—Lubricating compositions characterised by the base-material being a mineral or fatty oil
-
- 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
- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/68—Esters
- C10M129/76—Esters containing free hydroxy or carboxyl groups
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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
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/16—Amides; Imides
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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
- C10M135/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
- C10M135/32—Heterocyclic sulfur, selenium or tellurium compounds
- C10M135/36—Heterocyclic sulfur, selenium or tellurium compounds the ring containing sulfur and carbon with nitrogen or oxygen
-
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M141/12—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 compound containing atoms of elements not provided for in groups C10M141/02 - C10M141/10
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2207/02—Hydroxy compounds
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- C—CHEMISTRY; METALLURGY
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/027—Neutral salts thereof
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- C—CHEMISTRY; METALLURGY
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2207/28—Esters
- C10M2207/284—Esters of aromatic monocarboxylic acids
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/086—Imides
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- C10M2219/106—Thiadiazoles
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- C10M2223/045—Metal containing thio derivatives
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- 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
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- C10N2010/04—Groups 2 or 12
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- C10N2010/00—Metal present as such or in compounds
- C10N2010/06—Groups 3 or 13
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- C10N2010/00—Metal present as such or in compounds
- C10N2010/12—Groups 6 or 16
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- 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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- 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
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- C10N2020/04—Molecular weight; Molecular weight distribution
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
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- C10N2030/02—Pour-point; Viscosity index
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- C10N2030/04—Detergent property or dispersant property
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- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
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- C10N2030/20—Colour, e.g. dyes
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- C10N2030/42—Phosphor free or low phosphor content compositions
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- C10N2030/45—Ash-less or low ash content
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- C10N2040/25—Internal-combustion engines
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2060/00—Chemical after-treatment of the constituents of the lubricating composition
- C10N2060/14—Chemical after-treatment of the constituents of the lubricating composition by boron or a compound containing boron
Definitions
- the present invention relates to a lubricating oil composition.
- an oxidation catalyst for cleaning exhaust gas or a ternary catalyst, DPF (diesel particulate filter) or the like is employed.
- a phosphorus component in an engine oil poisons the active point of a catalyst to lower the catalyst function, or an ash derived from a metal component therein deposits on DPF to cause reduction in lifetime.
- the metal component-derived ash also deposits on the upper portion of a piston to be a cause of accelerating contamination of a spark-ignition plug.
- a gas engine oil is also required, in which the blending amounts of these are reduced and further the phosphorus content and the sulfated ash content are also reduced.
- a gas engine uses a natural gas, a liquefied petroleum gas (LPG) or an autogas as a fuel, and has a good combustion quality, and as compared with that of a gasoline engine and a diesel engine, the combustion temperature thereof is high. Consequently, an engine oil for use in a gas engine is used under a high load condition and is therefore readily degraded to often cause a problem in lifetime.
- LPG liquefied petroleum gas
- an engine oil for use in a gas engine is required to have metal corrosion resistance along with degradation control, and various engine oils are developed.
- PTL 1 discloses an engine oil composition containing a base oil, a polyoxyethylene alkyl ether having an HLB value of 8 to 11, and a predetermined amount of an organic molybdenum complex, for the purpose of providing an engine oil composition for gas engines excellent in metal corrosion resistance such as copper corrosion resistance for bearing members of a gas engine, and having a long lifetime.
- high-powered car engines and gas engines have become popular year by year.
- bearings such as piston-pin bearings as well as slide members are subjected to high temperatures, and therefore an engine oil for lubricating those members is desired to maintain various performances in use in a high-temperature environment higher than 160°C of a higher temperature than before.
- an engine oil is more readily degraded by oxidation, and reduction in heat resistance thereof is a serious problem.
- metal parts to constitute bearings such as piston-pin bearings and slide members that high-powered car engines and gas engines have are more readily corroded in a high-temperature environment higher than 160°C.
- zinc dithiophosphate ZnDTP
- zinc dithiophosphate may be more readily decomposed in such a high-temperature environment higher than 160°C to often produce sulfuric acid or phosphoric acid, which may be a factor to accelerate corrosion of metal parts.
- the present inventors' investigations have revealed that the engine oil disclosed as a specific example in PTL 1 is problematic in metal corrosion resistance in a high-temperature environment higher than 160°C.
- the present invention has been made in consideration of the above-mentioned problems, and its object is to provide a lubricating oil composition having excellent wear resistance, and in addition, even in use in a high-temperature environment higher than 160°C, capable of expressing excellent metal corrosion resistance and heat resistance.
- a lubricating oil composition which contains an ashless dispersant containing a non-boronated alkenyl succinic acid imide and a boronated alkenylsuccinic acid imide, a thiadiazole compound, and an aromatic carboxylate having one or more hydroxy groups, and in which the content of the thiadiazole compound is controlled to fall within a predetermined range, and the content of a zinc dithiophosphate and that of a metal-based detergent each are controlled to be a predetermined amount or less, can solve the above-mentioned problems, and have completed the present invention.
- the present invention provides the following [1].
- the lubricating oil composition of the present invention has excellent wear resistance and, even in use in a high-temperature environment higher than 160°C, capable of expressing excellent metal corrosion resistance and heat resistance.
- the content of a nitrogen atom is a value measured according to JIS K2609:1998.
- the content of a sulfur atom is a value measured according to JIS K2541-6:2013.
- the lubricating oil composition of the present invention contains a base oil (A), an ashless dispersant (B) containing a non-boronated alkenylsuccinic acid imide (B1) and a boronated alkenylsuccinic acid imide (B2), a thiadiazole compound (C), and an aromatic carboxylate (D) having one or more hydroxy groups, and is used in internal-combustion engines.
- the base oil (A), the ashless dispersant (B), the thiadiazole compound (C), and the aromatic carboxylate having one or more hydroxy groups may be referred to as “component (A)”, “component (B)”, “component (C)” and “component (D)”, respectively.
- the non-boronated alkenylsuccinic acid imide (B1) and the boronated alkenylsuccinic acid imide (B2) may be referred to as “component (B1)” and “component (B2)", respectively.
- the lubricating oil composition of one embodiment of the present invention may contain any other additive for lubricating oil not corresponding to the above-mentioned components, within a range not detracting from the advantageous effects of the present invention.
- the total content of the component (A), the component (B), the component (C), and the component (D) is, based on the total amount (100% by mass) of the lubricating oil composition, preferably 60% by mass or more, more preferably 70% by mass or more, even more preferably 75% by mass or more, further more preferably 80% by mass or more, and is generally 100% by mass or less, preferably 99.5% by mass or less, more preferably 99.0% by mass or less.
- the base oil (A) to be contained in the lubricating oil composition of the present invention may be any one containing one or more selected from a mineral oil and a synthetic oil.
- the mineral oil examples include an atmospheric residue given by atmospheric distillation of a crude oil such as a paraffinic crude oil, an intermediate base crude oil, or a naphthenic crude oil; a distillate given by reduced-pressure distillation of such an atmospheric residue; a mineral oil refined by subjecting the distillate to one or more treatments of solvent deasphalting, solvent extraction, hydro-cracking, solvent dewaxing, catalytic dewaxing, or hydrorefining; and a mineral oil (GTL) produced by isomerizing a wax (GTL wax, gas-to-liquid wax) produced from a natural gas by a Fischer-Tropsch process.
- a crude oil such as a paraffinic crude oil, an intermediate base crude oil, or a naphthenic crude oil
- a distillate given by reduced-pressure distillation of such an atmospheric residue
- the mineral oil for use in one embodiment of the present invention is preferably a mineral oil grouped in Group 2 or 3 in the base oil category by API (American Petroleum Institute), and is more preferably a mineral oil grouped in Group 3 thereof.
- Examples of the synthetic oil include poly- ⁇ -olefins, such as ⁇ -olefin homopolymers or ⁇ -olefin copolymers (e.g., ⁇ -olefin copolymers having 8 to 14 carbon atoms such as ethylene- ⁇ -olefin copolymers); isoparaffin; various esters such as polyol esters and dibasic acid esters; various ethers such as polyphenyl ethers; polyalkylene glycols; alkylbenzenes; and alkylnaphthalenes.
- poly- ⁇ -olefins such as ⁇ -olefin homopolymers or ⁇ -olefin copolymers (e.g., ⁇ -olefin copolymers having 8 to 14 carbon atoms such as ethylene- ⁇ -olefin copolymers); isoparaffin; various esters such as polyol esters and dibasic acid esters; various ethers such as polyphen
- the kinematic viscosity at 40°C of the base oil (A) is preferably 10 to 150 mm 2 /s, more preferably 12 to 120 mm 2 /s, even more preferably 15 to 100 mm 2 /s.
- the viscosity index of the base oil (A) is preferably 80 or more, more preferably 90 or more, even more preferably 100 or more, further more preferably 105 or more.
- kinematic viscosity and the viscosity index are values measured or calculated according to JIS K 2283:2000.
- the base oil (A) is a mixed base oil of two or more selected from a mineral oil and a synthetic oil
- the kinematic viscosity and the viscosity index of the mixed base oil each may fall within the above-mentioned range.
- the content of the base oil (A) is, based on the total amount (100% by mass) of the lubricating oil composition, generally 55% by mass or more, preferably 60% by mass or more, more preferably 65% by mass or more, even more preferably 70% by mass or more, further more preferably 75% by mass or more, and is preferably 98% by mass or less, more preferably 97% by mass or less, even more preferably 95% by mass or less, further more preferably 93% by mass or less.
- the lubricating oil composition of the present invention contains an ashless dispersant (B) containing a non-boronated alkenylsuccinic acid imide (B1) and a boronated alkenylsuccinic acid imide (B2).
- the lubricating oil composition can express excellent metal corrosion resistance and heat resistance.
- the content ratio of the boron atom to the nitrogen atom [B/N] in the component (B) is, as a ratio by mass, preferably 0.10 to 1.30, more preferably 0.20 to 1.20, even more preferably 0.20 to 1.10, further more preferably 0.30 to 1.10, further more preferably 0.70 to 1.05.
- the content ratio of the component (B1) to the component (B2) [(B1)/(B2)] is, as a ratio by mass, preferably 0.01 to 6.00, more preferably 0.05 to 4.00, even more preferably 0.10 to 2.00, further more preferably 0.15 to 1.50, further more preferably 0.20 to 0.95.
- the non-boronated alkenylsuccinic acid imide (B1) includes an alkenylsuccinic acid monoimide represented by the following general formula (b-1) or an alkenylsuccinic acid bisimide represented by the following general formula (b-2).
- R A , R A1 and R A2 each independently represent an alkenyl group having a number-average molecular weight (Mn) of 500 to 3000 (preferably 1000 to 3000, more preferably 1500 to 2500).
- alkenyl group examples include a polybutenyl group, a polyisobutenyl group and an ethylene-propylene copolymer, and among these, a polybutenyl group or a polyisobutenyl group is preferred.
- R B , R B1 and R B2 each independently represent an alkylene group having 2 to 5 carbon atoms.
- R C represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or a group represented by -(AO) n -H (wherein A represents an alkylene group having 2 to 4 carbon atoms, and n represents an integer of 1 to 10).
- x1 represents an integer of 1 to 10, preferably an integer of 2 to 5, more preferably 3 or 4.
- x2 represents an integer of 0 to 10, preferably an integer of 1 to 4, more preferably 2 or 3.
- the component (B1) can be produced, for example, by reaction of an alkenylsuccinic anhydride to be prepared by reaction of a polyolefin and a maleic anhydride, and a polyamine.
- polystyrene resin examples include a polymer to be prepared by polymerization of one or more selected from an ⁇ -olefin having 2 to 8 carbon atoms, and a copolymer of isobutene and 1-butene is preferred.
- polyamine examples include monodiamines such as ethylenediamine, propylenediamine, butylenediamine and pentylenediamine; polyalkylenepolyamines such as diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, di(methylethylene)triamine, dibutylenetriamine, tributylenetetramine and pentapentylenehexamine; and piperazine derivatives such as aminoethylpiperazine.
- monodiamines such as ethylenediamine, propylenediamine, butylenediamine and pentylenediamine
- polyalkylenepolyamines such as diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, di(methylethylene)triamine, dibutylenetriamine, tributylenetetramine and pentapentylenehexamine
- piperazine derivatives such as aminoethylpipe
- the component (B1) used in one embodiment of the present invention may also be a modified alkenylsuccinic acid imide prepared by reaction of a compound represented by the above-mentioned general formula (b-1) or (b-2) and a boron-free compound such as an alcohol, an aldehyde, a ketone, an alkylphenol, a cyclic carbonate, an epoxy compound or an organic acid.
- a boron-free compound such as an alcohol, an aldehyde, a ketone, an alkylphenol, a cyclic carbonate, an epoxy compound or an organic acid.
- the content of the component (B1) is, as calculated in terms of nitrogen atoms and based on the total amount (100% by mass) of the lubricating oil composition, preferably 400 to 3000 ppm by mass, more preferably 420 to 2500 ppm by mass, even more preferably 450 to 2200 ppm by mass, further more preferably 480 to 2000 ppm by mass, further more preferably 500 to 1500 ppm by mass.
- the content of the component (B1) as calculated in terms of nitrogen atoms may be controlled to fall within the above-mentioned range, and based on the total amount (100% by mass) of the lubricating oil composition, the content is preferably 0.1 to 8.0% by mass, more preferably 0.2 to 6.0% by mass, even more preferably 0.3 to 4.0% by mass.
- the boronated alkenylsuccinic acid imide (B2) includes a boron-modified derivative of an alkenylsuccinic acid imide represented by the above-mentioned general formula (b-1) or (b-2).
- the boronated alkenylsuccinic acid imide (B2) can be produced, for example, by reaction of an alkenylsuccinic anhydride to be prepared by reaction of a polyolefin and a maleic anhydride, and the above-mentioned polyamine and a boron compound.
- boron compound examples include boron oxide, boron halides, boric acid, boric anhydride, borates, and ammonium salts of boric acid.
- the content ratio of the boron atom to the nitrogen atom in the component (B2) to be used in one embodiment of the present invention [B/N] is, as a ratio by mass, preferably 0.3 to 2.5, more preferably 0.5 to 2.0, even more preferably 0.7 to 1.5.
- the content of the component (B2) is, as calculated in terms of boron atoms and based on the total amount (100% by mass) of the lubricating oil composition, preferably 200 to 3000 ppm by mass, more preferably 400 to 2800 ppm by mass, even more preferably 600 to 2700 ppm by mass, further more preferably 700 to 2600 ppm by mass, further more preferably 1100 to 2500 ppm by mass.
- the content of the component (B2) is, as calculated in terms of nitrogen atoms and based on the total amount (100% by mass) of the lubricating oil composition, preferably 250 to 3500 ppm by mass, more preferably 300 to 3200 ppm by mass, even more preferably 350 to 2800 ppm by mass, further more preferably 400 to 2500 ppm by mass.
- the content of the component (B2) as calculated in terms of boron atoms and in terms of nitrogen atoms may be controlled to fall within the above-mentioned range, and based on the total amount (100% by mass) of the lubricating oil composition, the content is preferably 0.1 to 15.0% by mass, more preferably 0.5 to 13.0% by mass, even more preferably 1.0 to 11.0% by mass.
- the lubricating oil composition of one embodiment of the present invention may contain any other ashless dispersant than the components (B1) and (B2) as the component (B) within a range not detracting from the advantageous effects of the present invention.
- ashless dispersant examples include benzylamines, boron-containing benzylamines, succinates, and mono or dicarboxylic acid amides typified by fatty acids or succinic acid.
- the total content ratio of the components (B1) and (B2) in the ashless dispersant (B) is, based on the total amount (100% by mass) of the ashless dispersant (B) contained in the lubricating oil composition, preferably 70 to 100% by mass, more preferably 80 to 100% by mass, even more preferably 90 to 100% by mass, further more preferably 95 to 100% by mass.
- the content of the component (B) is, as calculated in terms of nitrogen atoms and based on the total amount (100% by mass) of the lubricating oil composition, preferably 600 to 6500 ppm by mass, more preferably 700 to 5200 ppm by mass, even more preferably 800 to 4000 ppm by mass, further more preferably 850 to 3500 ppm by mass.
- the content of the component (B) is, based on the total amount (100% by mass) of the lubricating oil composition, preferably 0.2 to 30.0% by mass, more preferably 0.7 to 27% by mass, even more preferably 1.5 to 25.0% by mass, further more preferably 3.0 to 15.0% by mass.
- the lubricating oil composition of the present invention contains a thiadiazole compound (C), and the content of the component (C) therein is 0.2 to 1.2% by mass based on the total amount (100% by mass) of the lubricating oil composition.
- the lubricating oil composition where the content of the component (C) therein is less than 0.2% by mass could hardly express a friction-reducing effect and is problematic in point of wear resistance.
- the lubricating oil composition where the content of the component (C) therein is more than 1.2% by mass often causes corrosion of metal parts when used in a high-temperature environment higher than 160°C, and is problematic in point of metal corrosion resistance.
- the composition often causes oxidative degradation and is problematic also in point of heat resistance.
- the content of the component (C) is, based on the total amount (100% by mass) of the lubricating oil composition and from the viewpoint of improving wear resistance, preferably 0.22% by mass or more, more preferably 0.25% by mass or more, even more preferably 0.30% by mass or more, further more preferably 0.35% by mass or more, further more preferably 0.40% by mass or more, and is, from the viewpoint of improving metal corrosion resistance and heat resistance, preferably 1.15% by mass or less, more preferably 1.10% by mass or less, even more preferably 1.00% by mass or less, further more preferably 0.90% by mass or less.
- the content of the component (C) is, as calculated in terms of sulfur atoms and based on the total amount (100% by mass) of the lubricating oil composition and from the viewpoint of improving wear resistance, preferably 500 ppm by mass or more, more preferably 700 ppm by mass or more, even more preferably 900 ppm by mass or more, further more preferably 1200 ppm by mass or more, and is, from the viewpoint of improving metal corrosion resistance and heat resistance, preferably 4000 ppm by mass or less, more preferably 3800 ppm by mass or less, even more preferably 3600 ppm by mass or less, further more preferably 3000 ppm by mass or less.
- the thiadiazole compound (C) for use in one embodiment of the present invention may be any compound having a thiadiazole ring, but from the viewpoint of providing a lubricating oil composition excellent in wear resistance, a compound having a 1,3,4-thiadiazole ring is preferred, and a compound represented by the following general formula (c-1) is more preferred.
- One alone or two or more kinds of compounds for the component (C) may be used either singly or as combined.
- p and q each independently represent an integer of 0 to 5 (preferably an integer of 1 to 5, more preferably 1 or 2, even more preferably 2), and p + q is 1 or more.
- p q.
- r and s each independently represent an integer of 1 to 5 (preferably 1 or 2, more preferably 1).
- R a and R b each independently represent a hydrogen atom, a hydrocarbon group, or a hetero atom-containing group that contains one or more of an oxygen atom, a nitrogen atom and a sulfur atom, but preferably a hydrocarbon group.
- Examples of the hydrocarbon group that is selectable for R a and R b include a linear or branched alkyl group such as a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a 1,1-dimethylhexyl group, a 2-ethylhexyl group, a nonyl group, a 1,1-dimethylheptyl group, a decyl group, an undecyl group, a dodecyl group, a tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a heptadecyl group, or an octadecyl group; a linear or branched alkenyl group such as an octen
- the hydrocarbon group selectable for R a and R b is preferably an alkyl group.
- the alkyl group may be a linear alkyl group, or may be a branched alkyl group.
- the carbon number of the hydrocarbon group is preferably 1 to 30, more preferably 1 to 24, even more preferably 4 to 16, further more preferably 6 to 12.
- hetero atom-containing group selectable for R a and R b examples include a hydroxy group, an amino group, a nitro group, a carboxy group, a sulfo group, or a group represented by -COOR (where R represents the above-mentioned hydrocarbon group), and a hydrocarbon group substituted with any of these groups.
- the hetero atom-containing group is preferably an alkyl group having 1 to 30 carbon atoms and substituted with a hydroxy group, or a group represented by -COOR (where R represents the above-mentioned hydrocarbon group and is preferably an alkyl group having 1 to 30 carbon atoms).
- the component (C) for use in one embodiment of the present invention is a compound of the general formula (c-1) where p and q each are independently 1 or 2, r and s are 1, and R a and R b each are independently a linear or branched alkyl group having 1 to 30 carbon atoms, more preferably a compound represented by the following general formula (c-11), even more preferably a compound represented by the following general formula (c-12).
- R a1 and R b1 each independently represent a linear or branched alkyl group having 1 to 30 carbon atoms, preferably a branched alkyl group having 4 to 16 carbon atoms, more preferably a branched alkyl group having 6 to 12 carbon atoms.
- R a2 and R b2 each independently represent a linear or branched alkyl group having 1 to 16 carbon atoms, preferably a linear alkyl group having 1 to 16 carbon atoms, more preferably a linear alkyl group having 4 to 12 carbon atoms.
- R c , R d , R e and R f each independently represent a hydrogen atom, or an alkyl group having 1 to 6 carbon atoms, and at least one of R c and R d and at least one of R e and R f each are an alkyl group having 1 to 6 carbon atoms.
- R c , R d , R e and R f each are independently an alkyl group having 1 to 3 carbon atoms, more preferably a methyl group or an ethyl group, even more preferably a methyl group.
- the lubricating oil composition of the present invention contains an aromatic carboxylate (D) having one or more hydroxy groups.
- One alone or two or more kinds of the component (D) may be used either singly or as combined.
- the lubricating oil composition of the present invention can express excellent heat resistance even when used in a high-temperature environment higher than 160°C.
- the component (D) in the lubricating oil composition of the present invention, can readily disperse owing to the existence of the component (B2), and the property that the component (D) has can be more remarkably expressed, and consequently, the lubricating oil composition can express excellent heat resistance even in use in a high-temperature environment higher than 160°C.
- the content ratio of the component (D) to the component (B2) [(D)/(B2)] is, as a ratio by mass, preferably 0.1 to 5.0, more preferably 0.15 to 4.0, even more preferably 0.2 to 3.0, further more preferably 0.3 to 2.0.
- the aromatic carboxylate (D) having one or more hydroxy groups for use in one embodiment of the present invention is preferably one or more selected from a compound (D1) represented by the following general formula (d-1) and a compound (D2) represented by the following general formula (d-2), and more preferably contains at least a compound (D1).
- R 1 to R 5 each independently represent a hydrocarbon group having 1 to 50 carbon atoms.
- the carbon number of the hydrocarbon is preferably 1 to 50, more preferably 4 to 40, even more preferably 6 to 30, further more preferably 8 to 20.
- hydrocarbon group there are mentioned the same ones as those of the hydrocarbon group selectable for R a and R b in the general formula (c-1), and an alkyl group or an alkenyl group is preferred, and an alkyl group is more preferred.
- the alkyl group and the alkenyl group may be linear or branched.
- a represents an integer of 1 to 3 (preferably 1)
- b represents an integer of 1 to 3 (preferably 1)
- c represents an integer of 0 to 3 (preferably 0 or 1, more preferably 0)
- d represents an integer of 1 to 3 (preferably 1)
- e represents an integer of 1 to 3 (preferably 1)
- a + b+ e is an integer of 3 to 6
- c + d is an integer of 1 to 5.
- f represents an integer of 0 to 3
- g represents an integer of 0 to 3
- f + g is an integer of 1 to 3.
- h represents an integer of 0 to 4
- i represents an integer of 0 to 3
- h + i is an integer of 1 to 6.
- j represents an integer of 0 to 3
- k represents an integer of 1 to 3
- j + k is an integer of 1 to 5.
- n + g + h + i + m is an integer of 3 to 8.
- the content of the component (D) is, based on the total amount (100% by mass) of the lubricating oil composition and from the viewpoint of providing a lubricating oil composition having excellent heat resistance even in use in a high-temperature environment higher than 160°C, preferably 0.5 to 15.0% by mass, more preferably 0.7 to 13.0% by mass, even more preferably 1.0 to 12.0% by mass, further more preferably 2.0 to 10.0% by mass.
- the lubricating oil composition of the present invention may contain a zinc dithiophosphate (ZnDTP), and the content of the zinc dithiophosphate therein is, as calculated in terms of zinc atoms, limited to less than 500 ppm by mass based on the total amount (100% by mass) of the lubricating oil composition.
- ZnDTP zinc dithiophosphate
- a lubricating oil composition in which the content of a zinc dithiophosphate is more than 500 ppm by mass is problematic in point of metal corrosion resistance.
- decomposition of ZnDTP is more accelerated in a high-temperature environment higher than 160°C to often generate sulfuric acid and phosphoric acid to be a factor of accelerating corrosion of metal parts.
- the lubricating oil composition of the present invention contains the components (B) to (D) and can suppress in some degree decomposition of ZnDTP even in a high-temperature environment higher than 160°C. Consequently, so far as the content of ZnDTP therein is less than 500 ppm by mass, the lubricating oil composition can maintain good metal corrosion resistance and can improve wear resistance by the presence of ZnDTP.
- the content of zinc dithiophosphate is, as calculated in terms of zinc atoms, preferably less than 400 ppm by mass based on the total amount (100% by mass) of the lubricating oil composition, more preferably less than 350 ppm by mass, even more preferably less than 300 ppm by mass, further more preferably less than 280 ppm by mass. From the viewpoint of improving wear resistance, the content is preferably 100 ppm by mass or more.
- the content of zinc dithiophosphate may be controlled to fall within the above-mentioned range as calculated in terms of zinc atoms, but is preferably less than 0.50% by mass or less based on the total amount (100% by mass) of the lubricating oil composition, more preferably less than 0.40% by mass, even more preferably less than 0.30% by mass, and from the viewpoint of improving wear resistance, the content is preferably 0.10% by mass or more.
- the zinc dithiophosphate for use in one embodiment of the present invention includes a compound represented by the following general formula (e-1).
- R 11 to R 14 each independently represent a hydrocarbon group.
- hydrocarbon group may be the same as those of the hydrocarbon group selectable for R a and R b in the above-mentioned general formula (c-1), and an alkyl group is preferred.
- the alkyl group may be a linear alkyl group, or may be a branched alkyl group, but is preferably a branched alkyl group.
- the carbon number of the hydrocarbon group selectable for R 11 to R 14 is preferably 1 to 20, more preferably 3 to 16, even more preferably 4 to 12, further more preferably 5 to 10.
- the lubricating oil composition of the present invention may contain a metal-based detergent, and the content of the metal-based detergent therein is, as calculated in terms of metal atoms, limited to less than 600 pm by mass based on the total amount (100% by mass) of the lubricating oil composition.
- a lubricating oil composition in which the content is 600 ppm by mass or more tends to be poor in wear resistance.
- the lubricating oil composition of the present invention contains the component (D) and therefore can suppress in some degree reduction in wear resistance so far as the content of the metal-based detergent therein is less than 600 ppm by mass, and owing to the presence of the metal-based detergent, the heat resistance of the composition can be improved more.
- the content of the metal-based detergent is, as calculated in terms of metal atoms and based on the total amount (100% by mass) of the lubricating oil composition, and from the viewpoint of maintaining good wear resistance, preferably less than 550 ppm by mass, more preferably less than 500 ppm by mass, even more preferably less than 470 ppm by mass, further more preferably less than 300 ppm by mass.
- the metal-based detergent examples include organic acid metal salt compounds containing a metal atom selected from an alkali metal and an alkaline earth metal, specifically, metal salicylates, metal phenates and metal sulfonates containing a metal atom selected from an alkali metal and an alkaline earth metal.
- the metal atom contained in the metal-based detergent is, from the viewpoint of improving heat resistance, preferably sodium, calcium, magnesium or barium, more preferably calcium.
- the metal-based detergent for use in one embodiment of the present invention is preferably one or more selected from calcium salicylate, calcium phenate and calcium sulfonate.
- the metal-based detergent may be any of a neutral salt, a basic salt, an overbased salt, and a mixture of these.
- the total base number of the metal-based detergent is preferably 0 to 600 mgKOH/g.
- the total base number of the metal-based detergent is preferably 10 to 600 mgKOH/g, more preferably 20 to 500 mgKOH/g.
- base number means a base number determined through the perchloric acid method in accordance with JIS K 2501 7:2003 "Petroleum products and lubricating oils - neutralization value test method”.
- the lubricating oil composition of one embodiment of the present invention may contain any other additives for lubricating oil than the above-mentioned components, within a range not detracting from the advantageous effects of the present invention.
- the other additive for lubricating oil is referred to as "component (E)".
- Examples of the other additives for lubricating oil include an antioxidant, a viscosity index improver, a pour point depressant, an anti-wear agent, an extreme pressure agent, a metal-based friction regulator, a rust inhibitor, a metal deactivator, an anti-emulsifying agent, and an anti-foaming agent.
- One alone or two or more kinds of these additives for lubricating oil may be used either singly or as combined.
- Each content of the additives for lubricating oil can be appropriately controlled within a range not detracting from the advantageous effects of the present invention, and is, based on the total amount (100% by mass) of the lubricating oil composition, generally 0.001 to 15% by mass, preferably 0.005 to 10% by mass, more preferably 0.01 to 5% by mass, even more preferably 0.03 to 2% by mass.
- additives such as a viscosity index improver and an anti-foaming agent may be blended with the other component in the form of a solution diluted and dissolved in a part of the above-mentioned base oil (A), in consideration of the handleability and the solubility thereof in the base oil (A).
- the content of the additive such as an anti-foaming agent and a viscosity index improver means a content thereof as calculated in terms of active ingredient (in terms of resin fraction) excluding the diluting oil.
- antioxidants examples include an amine-based antioxidant, a phenol-based antioxidant, a molybdenum-based antioxidant, a sulfur-based antioxidant, and a phosphorus-based antioxidant.
- one or more selected from an amine-based antioxidant and a phenol-based antioxidant are preferred, and combined use of an amine-based antioxidant and a phenol-based antioxidant is more preferred.
- the viscosity index improver examples include polymers such as a non-dispersant-type polymethacrylate, a dispersant-type polymethacrylate, an olefinic copolymer (e.g., ethylene-propylene copolymer), a dispersant-type olefinic copolymer, and a styrenic copolymer (e.g., styrene-diene copolymer, styrene-isoprene copolymer).
- polymers such as a non-dispersant-type polymethacrylate, a dispersant-type polymethacrylate, an olefinic copolymer (e.g., ethylene-propylene copolymer), a dispersant-type olefinic copolymer, and a styrenic copolymer (e.g., styrene-diene copolymer, styrene-
- the weight-average molecular weight (Mw) of the viscosity index improver is generally 3,000 to 1,000,000, preferably 5,000 to 800,000, more preferably 10,000 to 700,000, and may be appropriately preset in accordance with the type of the polymer.
- pour point depressant examples include an ethylene-vinyl acetate copolymer, a condensate of a chloroparaffin and naphthalene, a condensate of a chloroparaffin and phenol, a polymethacrylate, and a polyalkylstyrene.
- Examples of the anti-wear agent or the extreme pressure agent include sulfur-containing compounds such as molybdenum dithiocarbamate, molybdenum dithiophosphate, disulfides, olefin sulfides, sulfurized oils and fats, sulfurized esters, thiocarbonates, thiocarbamates, and polysulfides; phosphorus-containing compounds such as phosphites, phosphates, phosphonates, and amine salts or metal salts thereof; and sulfur and phosphorus-containing compounds such as thiophosphites, thiophosphates, thiophosphonates, and amine salts or metal salts thereof.
- sulfur-containing compounds such as molybdenum dithiocarbamate, molybdenum dithiophosphate, disulfides, olefin sulfides, sulfurized oils and fats, sulfurized esters, thiocarbonates, thiocarbamates, and polysulfides
- metal-based friction regulator examples include molybdenum-based friction regulators such as molybdenum dithiocarbamate (MoDTC), molybdenum dithiophosphate (MoDTP), and amine salts of molybdic acid.
- MoDTC molybdenum dithiocarbamate
- MoDTP molybdenum dithiophosphate
- amine salts of molybdic acid examples include molybdenum-based friction regulators such as molybdenum dithiocarbamate (MoDTC), molybdenum dithiophosphate (MoDTP), and amine salts of molybdic acid.
- rust inhibitor examples include fatty acids, alkenylsuccinic acid half esters, fatty acid soaps, alkylsulfonates, polyalcohol fatty acid esters, aliphatic acid amines, paraffin oxides, and alkyl polyoxyethylene ethers.
- metal deactivator examples include benzotriazole compounds, tolyltriazole compounds, thiadiazole compounds, imidazole compounds, and pyrimidine compounds.
- anti-emulsifying agent examples include anionic surfactants such as castor oil sulfate salts, and petroleum sulfonate salts; cationic surfactants such as quaternary ammonium salts, and imidazolines; polyoxyalkylene polyglycols and dicarboxylic acid esters thereof; and alkylene oxide adducts such as alkylphenol-formaldehyde polycondensates.
- anti-foaming agent examples include silicone oils, fluorosilicone oils, and fluoroalkyl ethers.
- the content of a molybdenum compound to be blended as an additive is preferably as small as possible from the viewpoint of reducing metal-derived ash.
- the content of the molybdenum compound, as calculated in terms of molybdenum, is preferably less than 100 ppm by mass based on the total amount (100% by mass) of the lubricating oil composition, more preferably less than 50 ppm by mass, even more preferably less than 10 ppm by mass.
- a method for producing the lubricating oil composition of the present invention is not specifically limited, but may be, for example, a production method including the following step (I).
- a component (E) may be blended along with the components (A) to (D).
- the components are so blended that the content of the metal-based detergent therein, as calculated in terms of metal atoms, could be less than 600 ppm by mass based on the total amount of the lubricating oil composition.
- the components to be blended are as mentioned above, and the kind of a preferred component and the content of each component are also as mentioned above.
- the components to be blended in the step (I) may be blended in a form of a solution (dispersion) added with a diluent oil or the like. After the components have been blended, preferably, they are uniformly dispersed by stirring.
- the kinematic viscosity at 100°C of the lubricating oil composition of one embodiment of the present invention is preferably 8.0 to 20.0 mm 2 /s, more preferably 9.3 to 18.0 mm 2 /s, even more preferably 9.3 to 16.3 mm 2 /s.
- the kinematic viscosity at 100°C is 8.0 to 20 mm 2 /s, more preferably 8.0 to 16.3 mm 2 /s, even more preferably 8.0 to 12.5 mm 2 /s.
- the viscosity index of the lubricating oil composition of one embodiment of the present invention is preferably 100 or more, more preferably 110 or more, even more preferably 120 or more.
- the content of the phosphorus atom is, based on the total amount (100% by mass) of the lubricating oil composition and from the viewpoint of reducing the load to an emission gas post-treatment device, preferably less than 400 ppm by mass, more preferably less than 350 ppm by mass, even more preferably less than 300 ppm by mass, further more preferably less than 250 ppm by mass.
- the content of the sulfur atom is, based on the total amount (100% by mass) of the lubricating oil composition, preferably 500 to 5000 ppm by mass, more preferably 700 to 4500 ppm by mass, even more preferably 900 to 4000 ppm by mass, further more preferably 1050 to 3500 ppm by mass.
- the sulfated ash content is, based on the total amount (100% by mass) of the lubricating oil composition, preferably less than 0.30% by mass, more preferably less than 0.25% by mass, even more preferably less than 0.20% by mass, further more preferably less than 0.05% by mass.
- the sulfated ash content is less than 0.30% by mass, functional depression of a catalyst attached to a post-treatment device for emission gas can be prevented, and a metal-derived ash can be prevented from depositing on DPF.
- the sulfated ash content means a value measured according to JIS K2272:1998.
- the specified discoloration number is preferably 1 or 2, more preferably 1.
- the specified discoloration number is preferably 1 or 2.
- a value of a wear track diameter of the lubricating oil composition of one embodiment of the present invention is preferably 450 pm or less, more preferably 440 pm or less, even more preferably 435 pm or less, further more preferably 430 pm or less.
- the specified merit score is preferably 8.0 or more, more preferably 8.5 or more, even more preferably 9.0 or more, further more preferably 9.5 or more.
- the specified merit score is preferably 7.0 or more, more preferably 7.5 or more, even more preferably 8.0 or more, further more preferably 8.5 or more.
- the lubricating oil composition of the present invention has excellent wear resistance and, in addition, can express excellent metal corrosion resistance and heat resistance even in use in a high-temperature environment higher than 160°C.
- the lubricating oil composition of the present invention can be used in internal-combustion engines, and are especially preferably used in internal-combustion engines equipped with components that are subjected to a maximum temperature of higher than 160°C.
- Examples of the internal-combustion engines include gasoline engines, diesel engines and gas engines to be mounted in two-wheel vehicles, four-wheel vehicles, electric generators, and ships.
- the metal content is reduced, and therefore the lubricating oil composition is also favorably used in internal-combustion engines equipped with an emission gas post-treatment device, or spark-ignition internal-combustion engines equipped with a spark-ignition plug, or laser-ignition internal-combustion engines equipped with a laser-ignition plug.
- the present invention can provide an internal-combustion engine according to the following [1], and a use method according to the following [2].
- the internal-combustion engine in the above [1] and [2] is preferably an internal-combustion engine equipped with a component that is subjected to a maximum temperature of higher than 160°C, and more preferably an internal-combustion engine equipped with a component that is subjected to a maximum temperature of higher than 160°C and further equipped with an emission gas post-treatment device. Also preferred is a spark-ignition internal-combustion engine equipped with a spark-ignition plug, as well as a laser-ignition internal-combustion engine equipped with a laser-ignition plug.
- a base oil and various additives shown below were blended in a blending ratio shown in Tables 1 to 3, and well mixed to prepare lubricating oil compositions having a kinematic viscosity at 100°C of 12.0 to 13.0 mm 2 /s.
- Antioxidant mixture of amine-based antioxidant and phenol-based antioxidant.
- Mixed additive mixed additive containing an anti-foaming agent and pour point depressant.
- a sample which failed in the metal corrosion test (1) was no more tested in the subsequent wear resistance test (2) and the hot tube test (3).
- a sample which failed in the wear resistance test (2) was no more tested in the hot tube test (3).
- Samples were tested according to a test tube method of JIS K2513:2000, at a preset temperature condition of 100°C and 165.5°C.
- the copper plate was taken out, and the discoloration degree of the copper plate was evaluated according to the copper plate evaluation method stipulated in JIS K2513:2000 to specify the discoloration number at each temperature condition.
- Discoloration numbers are 1 to 4 in 4 ranks, and a smaller numerical value means that the discoloration of the sample was suppressed more, that is, the sample can be said to have a higher metal corrosion-resistant effect.
- a lubricating oil composition was introduced into the space between a test plate and a test ball, and under the condition mentioned below, the test ball was moved to carry out the test. After the test, the wear track diameter of the test ball was measured.
- a sample having a smaller value of the wear track diameter can be said to be a lubricating oil composition excellent in wear resistance.
- the prepared lubricating oil composition was taken in a glass tube, and tested in a hot tube test according to JPI-5S-55-99, at a test temperature of 280°C.
- the glass tube after the test was evaluated from a score 0 point (black) to 10 point (colorless) at intervals of 0.5 point, and the score of the fresh oil in 21 ranks was determined.
- a sample having a higher score number has better high-temperature detergency.
- test oil lubricating oil composition
- test oil lubricating oil composition
- the oil was tested in an ISOT test according to JIS K 2514-1:2013, at 165.5°C for 72 hours and was thus forcedly degraded to be a degraded oil.
- the degraded oil was tested in a hot tube test under the same condition as above, and was evaluated.
- Example 7 Composition Component (A) Base Oil (a) mass% 86.50 86.47 86.00 86.70 86.50 88.50 81.50 Component (B1) Non-boronated Alkenylsuccinic Acid Monoimide (b1) mass% 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 Component (B2) Boronated Alkenylsuccinic Acid Monoimide (b2-1) mass% 5.00 5.00 5.00 5.00 3.00 10.00 Boronated Alkenylsuccinic Acid Monoimide (b2-2) mass% - - - - 5.00 - - Component (C) Thiadiazole Compound (c1) mass% 0.50 1.00 0.30 0.50 0.50 0.50 Thiadiazole Compound (c2) mass% -
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- Organic Chemistry (AREA)
- Lubricants (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018046837 | 2018-03-14 | ||
| PCT/JP2019/010695 WO2019177125A1 (fr) | 2018-03-14 | 2019-03-14 | Composition d'huile lubrifiante |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3766948A1 true EP3766948A1 (fr) | 2021-01-20 |
| EP3766948A4 EP3766948A4 (fr) | 2021-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19768345.1A Withdrawn EP3766948A4 (fr) | 2018-03-14 | 2019-03-14 | Composition d'huile lubrifiante |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20210047581A1 (fr) |
| EP (1) | EP3766948A4 (fr) |
| JP (1) | JPWO2019177125A1 (fr) |
| WO (1) | WO2019177125A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7454556B2 (ja) * | 2019-03-29 | 2024-03-22 | 出光興産株式会社 | 潤滑油組成物 |
| JP7277222B2 (ja) * | 2019-03-29 | 2023-05-18 | 出光興産株式会社 | 潤滑油組成物 |
| US11932822B2 (en) * | 2019-06-28 | 2024-03-19 | Idemitsu Kosan Co., Ltd. | Lubricating oil composition |
| JP2023008046A (ja) * | 2021-07-05 | 2023-01-19 | 出光興産株式会社 | 潤滑油組成物 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11246883A (ja) * | 1998-03-05 | 1999-09-14 | Cosmo Sogo Kenkyusho Kk | エンジン油組成物 |
| JP3985330B2 (ja) * | 1998-03-20 | 2007-10-03 | 株式会社コスモ総合研究所 | ディーゼルエンジン油組成物 |
| JP2000226593A (ja) * | 1999-02-05 | 2000-08-15 | Idemitsu Kosan Co Ltd | 潤滑油用添加剤及び潤滑油組成物 |
| JP4212751B2 (ja) * | 2000-02-16 | 2009-01-21 | 出光興産株式会社 | ホウ素化こはく酸イミド系化合物及びその用途 |
| JP5179831B2 (ja) * | 2007-10-29 | 2013-04-10 | Ｊｘ日鉱日石エネルギー株式会社 | 内燃機関用潤滑油組成物 |
| JP5349088B2 (ja) | 2009-03-09 | 2013-11-20 | コスモ石油ルブリカンツ株式会社 | ガスエンジン用エンジン油組成物 |
| JP2011190331A (ja) * | 2010-03-12 | 2011-09-29 | Idemitsu Kosan Co Ltd | 潤滑油組成物 |
| WO2013141077A1 (fr) * | 2012-03-21 | 2013-09-26 | 出光興産株式会社 | Composition d'huile lubrifiante pour moteur en alliage d'aluminium et procédé de lubrification |
| JP6016692B2 (ja) * | 2013-03-29 | 2016-10-26 | Ｊｘエネルギー株式会社 | 自動変速機用潤滑油組成物 |
| WO2014189057A1 (fr) * | 2013-05-20 | 2014-11-27 | 出光興産株式会社 | Composition lubrifiante |
| SG11201802101PA (en) * | 2015-09-28 | 2018-04-27 | Jxtg Nippon Oil & Energy Corp | Cylinder lubricating oil composition for crosshead diesel engine |
-
2019
- 2019-03-14 US US16/979,675 patent/US20210047581A1/en not_active Abandoned
- 2019-03-14 JP JP2020506661A patent/JPWO2019177125A1/ja active Pending
- 2019-03-14 WO PCT/JP2019/010695 patent/WO2019177125A1/fr active Application Filing
- 2019-03-14 EP EP19768345.1A patent/EP3766948A4/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| US20210047581A1 (en) | 2021-02-18 |
| EP3766948A4 (fr) | 2021-12-08 |
| WO2019177125A1 (fr) | 2019-09-19 |
| JPWO2019177125A1 (ja) | 2021-02-25 |
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