JP6591907B2 - 内燃機関用潤滑油組成物 - Google Patents
内燃機関用潤滑油組成物 Download PDFInfo
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- JP6591907B2 JP6591907B2 JP2016028257A JP2016028257A JP6591907B2 JP 6591907 B2 JP6591907 B2 JP 6591907B2 JP 2016028257 A JP2016028257 A JP 2016028257A JP 2016028257 A JP2016028257 A JP 2016028257A JP 6591907 B2 JP6591907 B2 JP 6591907B2
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- lubricating oil
- oil composition
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- lubricating
- Prior art date
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- 239000000203 mixture Substances 0.000 title claims description 66
- 239000010687 lubricating oil Substances 0.000 title claims description 65
- 238000002485 combustion reaction Methods 0.000 title claims description 12
- 239000002199 base oil Substances 0.000 claims description 31
- -1 alkali metal salicylates Chemical class 0.000 claims description 30
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 18
- 229910052783 alkali metal Inorganic materials 0.000 claims description 17
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 17
- 230000001050 lubricating effect Effects 0.000 claims description 16
- 239000002585 base Substances 0.000 claims description 14
- 150000001340 alkali metals Chemical class 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000003599 detergent Substances 0.000 claims description 9
- 239000003607 modifier Substances 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 7
- 239000011733 molybdenum Substances 0.000 claims description 7
- 239000010710 diesel engine oil Substances 0.000 claims description 4
- 229960001860 salicylate Drugs 0.000 claims 1
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 31
- 239000003921 oil Substances 0.000 description 20
- 239000002270 dispersing agent Substances 0.000 description 18
- 229960002317 succinimide Drugs 0.000 description 16
- 125000000217 alkyl group Chemical group 0.000 description 15
- 239000000446 fuel Substances 0.000 description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 14
- 229910052802 copper Inorganic materials 0.000 description 14
- 239000010949 copper Substances 0.000 description 14
- 238000005260 corrosion Methods 0.000 description 14
- 230000007797 corrosion Effects 0.000 description 14
- 125000004432 carbon atom Chemical group C* 0.000 description 13
- 125000003342 alkenyl group Chemical group 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 150000001875 compounds Chemical class 0.000 description 10
- 238000000746 purification Methods 0.000 description 10
- 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 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 7
- 239000000654 additive Substances 0.000 description 7
- 239000011575 calcium Substances 0.000 description 7
- 229910052791 calcium Inorganic materials 0.000 description 7
- 239000003963 antioxidant agent Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 5
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 5
- 229910052796 boron Inorganic materials 0.000 description 5
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-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
- 239000002253 acid Substances 0.000 description 4
- WGQKYBSKWIADBV-UHFFFAOYSA-N benzylamine Chemical compound NCC1=CC=CC=C1 WGQKYBSKWIADBV-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
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- 238000004821 distillation Methods 0.000 description 4
- 238000000921 elemental analysis Methods 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
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- 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
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- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
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- 239000004327 boric acid Substances 0.000 description 3
- 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 3
- 230000000694 effects Effects 0.000 description 3
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- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 150000004678 hydrides Chemical class 0.000 description 3
- 239000003112 inhibitor Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
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- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
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- 238000003860 storage Methods 0.000 description 3
- 125000004434 sulfur atom Chemical group 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
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- 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
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-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
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000002518 antifoaming agent Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 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
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 2
- 239000012964 benzotriazole Substances 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 150000001639 boron compounds Chemical class 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 2
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000006078 metal deactivator Substances 0.000 description 2
- OSWPMRLSEDHDFF-UHFFFAOYSA-N methyl salicylate Chemical compound COC(=O)C1=CC=CC=C1O OSWPMRLSEDHDFF-UHFFFAOYSA-N 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 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
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 230000002265 prevention Effects 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 compound OCC1=CC=CC=C1O CQRYARSYNCAZFO-UHFFFAOYSA-N 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- 229940014800 succinic anhydride Drugs 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- 239000011593 sulfur Substances 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
- 239000001993 wax Substances 0.000 description 2
- 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
- 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
- ALKCLFLTXBBMMP-UHFFFAOYSA-N 3,7-dimethylocta-1,6-dien-3-yl hexanoate Chemical compound CCCCCC(=O)OC(C)(C=C)CCC=C(C)C ALKCLFLTXBBMMP-UHFFFAOYSA-N 0.000 description 1
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- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
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- DJBVDAUKGXUPLO-QEMDMZNVSA-N C(C)C(C(=O)O)CCCC.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O Chemical compound C(C)C(C(=O)O)CCCC.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O.C([C@H](O)[C@H](O)CO)O DJBVDAUKGXUPLO-QEMDMZNVSA-N 0.000 description 1
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- 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 1
- 150000007513 acids Chemical class 0.000 description 1
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- 125000003277 amino group Chemical group 0.000 description 1
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- SAOKZLXYCUGLFA-UHFFFAOYSA-N bis(2-ethylhexyl) adipate Chemical compound CCCCC(CC)COC(=O)CCCCC(=O)OCC(CC)CCCC SAOKZLXYCUGLFA-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- WDNQRCVBPNOTNV-UHFFFAOYSA-N dinonylnaphthylsulfonic acid Chemical compound C1=CC=C2C(S(O)(=O)=O)=C(CCCCCCCCC)C(CCCCCCCCC)=CC2=C1 WDNQRCVBPNOTNV-UHFFFAOYSA-N 0.000 description 1
- VJHINFRRDQUWOJ-UHFFFAOYSA-N dioctyl sebacate Chemical compound CCCCC(CC)COC(=O)CCCCCCCCC(=O)OCC(CC)CCCC VJHINFRRDQUWOJ-UHFFFAOYSA-N 0.000 description 1
- 150000002019 disulfides Chemical class 0.000 description 1
- LZJUZSYHFSVIGJ-UHFFFAOYSA-N ditridecyl hexanedioate Chemical compound CCCCCCCCCCCCCOC(=O)CCCCC(=O)OCCCCCCCCCCCCC LZJUZSYHFSVIGJ-UHFFFAOYSA-N 0.000 description 1
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- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
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- 125000001841 imino group Chemical group [H]N=* 0.000 description 1
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- 238000002156 mixing Methods 0.000 description 1
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- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
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- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229940083082 pyrimidine derivative acting on arteriolar smooth muscle Drugs 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 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
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- 239000001384 succinic acid Substances 0.000 description 1
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Landscapes
- Lubricants (AREA)
Description
(1)パラフィン基系原油及び/又は混合基系原油の常圧蒸留による留出油
(2)パラフィン基系原油及び/又は混合基系原油の常圧蒸留残渣油の減圧蒸留留出油(WVGO)
(3)潤滑油脱ろう工程により得られるワックス及び/又はGTLプロセス等により製造されるフィッシャートロプシュワックス
(4)上記(1)〜(3)の中から選ばれる1種又は2種以上の混合油のマイルドハイドロクラッキング処理油(MHC)
(5)上記(1)〜(4)の中から選ばれる2種以上の油の混合油
(6)上記(1)、(2)、(3)、(4)又は(5)の脱れき油(DAO)
(7)上記(6)のマイルドハイドロクラッキング処理油(MHC)
(8)上記(1)〜(7)の中から選ばれる2種以上の油の混合油等を原料油とし、この原料油及び/又はこの原料油から回収された潤滑油留分を、通常の精製方法によって精製し、潤滑油留分を回収することによって得られる潤滑油
(a)水素化分解、水素化仕上げ等の水素化精製
(b)フルフラール溶剤抽出等の溶剤精製
(c)溶剤脱ろう、接触脱ろう等の脱ろう
(d)酸性白土、活性白土等による白土精製
(e)硫酸洗浄、苛性ソーダ洗浄等の薬品(酸又はアルカリ)精製
これらの精製方法は、1種単独で、又は2種以上を任意の組み合わせ及び任意の順序で採用することができる。
R5−Ph−CH2NH−(CH2CH2NH)p−H (2)
式(2)中、R5は、炭素数40〜400のアルキル基又はアルケニル基を表し、好ましくは炭素数60〜350のアルキル基又はアルケニル基を表す。Phはフェニレン基を表し、pは1〜5の整数を表し、好ましくは2〜4の整数を表す。
R6‐NH−(CH2CH2NH)q−H (3)
式(3)中、R6は、炭素数40〜400のアルキル基又はアルケニル基を表し、好ましくは60〜350のアルキル基又はアルケニル基を表す。qは1〜5の整数を表し、好ましくは2〜4の整数を表す。
(基油)
水素化精製鉱油(100℃における動粘度:4.2mm2/s、粘度指数:124)
(添加剤)
A−1:モリブデンジチオカーバメイト(モリブデン元素含有量:10質量%)
B−1:カルシウムフェネート(塩基価:286mgKOH/g、カルシウム元素含有量:10.2質量%)
B−2:カルシウムフェネート(塩基価:255mgKOH/g、カルシウム元素含有量:9.25質量%)
B−3:カルシウムフェネート(塩基価:147mgKOH/g、カルシウム元素含有量:5.3質量%)
b−1:カルシウムサリシレート(塩基価:173mgKOH/g、カルシウム元素含有量:6.2質量%)
b−2:カルシウムスルフォネート(塩基価:425mgKOH/g、カルシウム元素含有量:16.1質量%)
C−1:窒素含有基を有する(分散型)ポリメタクリレート(重量平均分子量:260000、SSI:50)
C−2:スチレンジエンコポリマー(重量平均分子量:430000、SSI:25)
D−1:無灰分散剤、ジアルキルジチオリン酸亜鉛等を含有する添加剤パッケージ(リン元素含有量:0.9質量%)
実施例、参考例及び比較例の各潤滑油組成物について、SRV試験による摩擦係数により省燃費性を評価した。ディスク温度100℃、荷重200N、振幅1.5mm、周波数50Hzの条件でのSRV試験の摩擦係数が0.10以下の場合を「A」、摩擦係数が0.10を超え0.150以下の場合を「B」、摩擦係数が0.150を超える場合を「C」として評価した。結果を表1,2に示す。摩擦係数の評価がAであれば、省燃費性に優れているといえる。
実施例、参考例及び比較例の各潤滑油組成物について、腐食酸化安定度試験(JIS K2503:2010)に準拠して銅に対する腐食防止性を評価した。ただし、サンプル量100ml、試験温度135℃、試験時間168時間、空気流量5L/hとし、触媒は銅、鉛、スズとした。結果を表1,2に示す。銅の溶出量が少ないほど(例えば50質量ppm以下)、銅に対する腐食防止性に優れているといえる。
実施例及び参考例の各潤滑油組成物について、腐食酸化安定度試験(JIS K2503:2010)に準拠して鉛に対する腐食防止性を評価した。ただし、サンプル量100ml、試験温度135℃、試験時間168時間、空気流量5L/hとし、触媒は銅、鉛、スズとした。結果を表3に示す。鉛の溶出量が少ないほど、鉛に対する腐食防止性に優れているといえる。
Claims (3)
- 潤滑油基油と、
潤滑油組成物全量を基準として、
(A)成分として、モリブデン元素換算で0.03質量%以上の有機モリブデン系摩擦調整剤と、
(B)成分として、金属元素換算で0.05質量%以上0.1質量%以下の、アルカリ金属フェネート及びアルカリ土類金属フェネートからなる群より選ばれる少なくとも1種の金属系清浄剤と、
B)成分以外の成分として、アルカリ金属サリシレート及びアルカリ土類金属サリシレートからなる群より選ばれる少なくとも1種の金属系清浄剤と、を含有し、
潤滑油組成物におけるアルカリ金属及びアルカリ土類金属元素の合計含有量が、潤滑油組成物全量を基準として、1500質量ppm以上2600質量ppm以下である、
内燃機関用潤滑油組成物。 - 前記金属系清浄剤の塩基価が200mgKOH/g以上である、請求項1に記載の内燃機関用潤滑油組成物。
- ディーゼルエンジン油として用いられる、請求項1又は2に記載の内燃機関用潤滑油組成物。
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