JPWO2013128748A1 - 潤滑油組成物 - Google Patents
潤滑油組成物 Download PDFInfo
- Publication number
- JPWO2013128748A1 JPWO2013128748A1 JP2014501968A JP2014501968A JPWO2013128748A1 JP WO2013128748 A1 JPWO2013128748 A1 JP WO2013128748A1 JP 2014501968 A JP2014501968 A JP 2014501968A JP 2014501968 A JP2014501968 A JP 2014501968A JP WO2013128748 A1 JPWO2013128748 A1 JP WO2013128748A1
- Authority
- JP
- Japan
- Prior art keywords
- less
- base oil
- lubricating oil
- acid
- poly
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 103
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 81
- 239000002199 base oil Substances 0.000 claims abstract description 101
- 229920000193 polymethacrylate Polymers 0.000 claims abstract description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 23
- 229920013639 polyalphaolefin Polymers 0.000 claims abstract description 21
- 150000004678 hydrides Chemical class 0.000 claims abstract description 10
- 125000004432 carbon atom Chemical group C* 0.000 claims description 58
- 150000002148 esters Chemical class 0.000 claims description 33
- 150000005846 sugar alcohols Polymers 0.000 claims description 15
- 239000000178 monomer Substances 0.000 claims description 13
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 239000001257 hydrogen Substances 0.000 claims description 8
- 229910052739 hydrogen Inorganic materials 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 3
- 239000002480 mineral oil Substances 0.000 abstract description 8
- 235000010446 mineral oil Nutrition 0.000 abstract description 8
- -1 organic acid ester Chemical class 0.000 description 54
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 30
- 125000000217 alkyl group Chemical group 0.000 description 30
- 239000003921 oil Substances 0.000 description 27
- 235000019198 oils Nutrition 0.000 description 27
- 230000001050 lubricating effect Effects 0.000 description 25
- 229910052751 metal Inorganic materials 0.000 description 23
- 239000002184 metal Substances 0.000 description 23
- 239000002253 acid Substances 0.000 description 21
- 235000014113 dietary fatty acids Nutrition 0.000 description 16
- 239000000194 fatty acid Substances 0.000 description 16
- 229930195729 fatty acid Natural products 0.000 description 16
- 125000003342 alkenyl group Chemical group 0.000 description 15
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- 239000003795 chemical substances by application Substances 0.000 description 13
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- 238000000034 method Methods 0.000 description 13
- 239000000126 substance Substances 0.000 description 13
- 125000001931 aliphatic group Chemical group 0.000 description 12
- 150000001342 alkaline earth metals Chemical class 0.000 description 12
- 239000002585 base Substances 0.000 description 12
- 239000005077 polysulfide Substances 0.000 description 12
- 229920001021 polysulfide Polymers 0.000 description 12
- 150000008117 polysulfides Polymers 0.000 description 12
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- 238000009835 boiling Methods 0.000 description 11
- 150000001875 compounds Chemical class 0.000 description 11
- 150000002430 hydrocarbons Chemical group 0.000 description 11
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- 239000000654 additive Substances 0.000 description 10
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- 230000003197 catalytic effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 6
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- 229910052783 alkali metal Inorganic materials 0.000 description 6
- 150000001336 alkenes Chemical class 0.000 description 6
- 125000002947 alkylene group Chemical group 0.000 description 6
- 125000003118 aryl group Chemical group 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 6
- 238000004821 distillation Methods 0.000 description 6
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 6
- 239000003566 sealing material Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 150000001340 alkali metals Chemical class 0.000 description 5
- 238000004517 catalytic hydrocracking Methods 0.000 description 5
- 239000003607 modifier Substances 0.000 description 5
- 239000003208 petroleum Substances 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 4
- 150000001412 amines Chemical group 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 4
- 159000000007 calcium salts Chemical class 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 238000006317 isomerization reaction Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 159000000003 magnesium salts Chemical class 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- PQXKWPLDPFFDJP-UHFFFAOYSA-N 2,3-dimethyloxirane Chemical compound CC1OC1C PQXKWPLDPFFDJP-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- WWZKQHOCKIZLMA-UHFFFAOYSA-N Caprylic acid Natural products CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 3
- UNXHWFMMPAWVPI-UHFFFAOYSA-N Erythritol Natural products OCC(O)C(O)CO UNXHWFMMPAWVPI-UHFFFAOYSA-N 0.000 description 3
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 230000000994 depressogenic effect Effects 0.000 description 3
- UNXHWFMMPAWVPI-ZXZARUISSA-N erythritol Chemical compound OC[C@H](O)[C@H](O)CO UNXHWFMMPAWVPI-ZXZARUISSA-N 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 239000003925 fat Substances 0.000 description 3
- 150000004679 hydroxides Chemical class 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 description 3
- 235000010755 mineral Nutrition 0.000 description 3
- 239000002808 molecular sieve Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229920000768 polyamine Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 235000019260 propionic acid Nutrition 0.000 description 3
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 3
- 229960001860 salicylate Drugs 0.000 description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 3
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 3
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 3
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 3
- 239000004711 α-olefin Substances 0.000 description 3
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 2
- ARXKVVRQIIOZGF-UHFFFAOYSA-N 1,2,4-butanetriol Chemical compound OCCC(O)CO ARXKVVRQIIOZGF-UHFFFAOYSA-N 0.000 description 2
- RBACIKXCRWGCBB-UHFFFAOYSA-N 1,2-Epoxybutane Chemical compound CCC1CO1 RBACIKXCRWGCBB-UHFFFAOYSA-N 0.000 description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 2
- SZSSMFVYZRQGIM-UHFFFAOYSA-N 2-(hydroxymethyl)-2-propylpropane-1,3-diol Chemical compound CCCC(CO)(CO)CO SZSSMFVYZRQGIM-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- SQXVFRPOCRLDFO-UHFFFAOYSA-M C(C)(CC)SP(=S)(OC(C)CC)[O-].[Zn+] Chemical compound C(C)(CC)SP(=S)(OC(C)CC)[O-].[Zn+] SQXVFRPOCRLDFO-UHFFFAOYSA-M 0.000 description 2
- DQANBMFWFRIKQU-UHFFFAOYSA-M C(C)(CCC)SP(=S)(OC(C)CCC)[O-].[Zn+] Chemical compound C(C)(CCC)SP(=S)(OC(C)CCC)[O-].[Zn+] DQANBMFWFRIKQU-UHFFFAOYSA-M 0.000 description 2
- YHFUALJUTFKAOK-UHFFFAOYSA-M C(C)(CCCC)SP(=S)(OC(C)CCCC)[O-].[Zn+] Chemical compound C(C)(CCCC)SP(=S)(OC(C)CCCC)[O-].[Zn+] YHFUALJUTFKAOK-UHFFFAOYSA-M 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 2
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 2
- 239000004386 Erythritol Substances 0.000 description 2
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 238000006683 Mannich reaction Methods 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical group C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 150000004996 alkyl benzenes Chemical class 0.000 description 2
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- 230000033228 biological regulation Effects 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
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 2
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- 125000000753 cycloalkyl group Chemical group 0.000 description 2
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- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
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- 235000011187 glycerol Nutrition 0.000 description 2
- CKDDRHZIAZRDBW-UHFFFAOYSA-N henicosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCC(O)=O CKDDRHZIAZRDBW-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 125000000623 heterocyclic group Chemical group 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 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 2
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- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
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- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- ISYWECDDZWTKFF-UHFFFAOYSA-N nonadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCCC(O)=O ISYWECDDZWTKFF-UHFFFAOYSA-N 0.000 description 2
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- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
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- 150000004671 saturated fatty acids Chemical class 0.000 description 2
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- 239000000600 sorbitol Substances 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical compound O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 2
- XEZVDURJDFGERA-UHFFFAOYSA-N tricosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCC(O)=O XEZVDURJDFGERA-UHFFFAOYSA-N 0.000 description 2
- SZHOJFHSIKHZHA-UHFFFAOYSA-N tridecanoic acid Chemical compound CCCCCCCCCCCCC(O)=O SZHOJFHSIKHZHA-UHFFFAOYSA-N 0.000 description 2
- ZDPHROOEEOARMN-UHFFFAOYSA-N undecanoic acid Chemical compound CCCCCCCCCCC(O)=O ZDPHROOEEOARMN-UHFFFAOYSA-N 0.000 description 2
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 2
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- NNNVXFKZMRGJPM-KHPPLWFESA-N sapienic acid Chemical compound CCCCCCCCC\C=C/CCCCC(O)=O NNNVXFKZMRGJPM-KHPPLWFESA-N 0.000 description 1
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- 231100000241 scar Toxicity 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000010802 sludge Substances 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
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical group [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 1
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- 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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- VLLMWSRANPNYQX-UHFFFAOYSA-N thiadiazole Chemical compound C1=CSN=N1.C1=CSN=N1 VLLMWSRANPNYQX-UHFFFAOYSA-N 0.000 description 1
- YODZTKMDCQEPHD-UHFFFAOYSA-N thiodiglycol Chemical compound OCCSCCO YODZTKMDCQEPHD-UHFFFAOYSA-N 0.000 description 1
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- 150000003580 thiophosphoric acid esters Chemical class 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- WXBXVVIUZANZAU-CMDGGOBGSA-N trans-2-decenoic acid Chemical compound CCCCCCC\C=C\C(O)=O WXBXVVIUZANZAU-CMDGGOBGSA-N 0.000 description 1
- HOGWBMWOBRRKCD-BUHFOSPRSA-N trans-2-pentadecenoic acid Chemical compound CCCCCCCCCCCC\C=C\C(O)=O HOGWBMWOBRRKCD-BUHFOSPRSA-N 0.000 description 1
- IBYFOBGPNPINBU-OUKQBFOZSA-N trans-2-tetradecenoic acid Chemical compound CCCCCCCCCCC\C=C\C(O)=O IBYFOBGPNPINBU-OUKQBFOZSA-N 0.000 description 1
- LKOVPWSSZFDYPG-WUKNDPDISA-N trans-octadec-2-enoic acid Chemical compound CCCCCCCCCCCCCCC\C=C\C(O)=O LKOVPWSSZFDYPG-WUKNDPDISA-N 0.000 description 1
- YIYBQIKDCADOSF-ONEGZZNKSA-N trans-pent-2-enoic acid Chemical compound CC\C=C\C(O)=O YIYBQIKDCADOSF-ONEGZZNKSA-N 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
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical class OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 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
- 238000005292 vacuum distillation Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000000811 xylitol Substances 0.000 description 1
- 235000010447 xylitol Nutrition 0.000 description 1
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 description 1
- 229960002675 xylitol Drugs 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- IZHHFAVADGBUGN-UHFFFAOYSA-L zinc 11-methyldodecoxy-(11-methyldodecylsulfanyl)-oxido-sulfanylidene-lambda5-phosphane Chemical compound P(=S)(SCCCCCCCCCCC(C)C)(OCCCCCCCCCCC(C)C)[O-].[Zn+2].C(CCCCCCCCCC(C)C)SP(=S)(OCCCCCCCCCCC(C)C)[O-] IZHHFAVADGBUGN-UHFFFAOYSA-L 0.000 description 1
- MBBWTVUFIXOUBE-UHFFFAOYSA-L zinc;dicarbamodithioate Chemical compound [Zn+2].NC([S-])=S.NC([S-])=S MBBWTVUFIXOUBE-UHFFFAOYSA-L 0.000 description 1
- YZKRIHZCXGPZGB-UHFFFAOYSA-L zinc;oxido-propan-2-yloxy-propan-2-ylsulfanyl-sulfanylidene-$l^{5}-phosphane Chemical compound [Zn+2].CC(C)OP([O-])(=S)SC(C)C.CC(C)OP([O-])(=S)SC(C)C YZKRIHZCXGPZGB-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- 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
- C10M145/00—Lubricating compositions characterised by the additive being a macromolecular compound containing oxygen
- C10M145/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M145/10—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate
- C10M145/12—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate monocarboxylic
- C10M145/14—Acrylate; Methacrylate
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/041—Mixtures of base-materials and additives the additives being macromolecular compounds only
-
- 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
- C10M2205/0285—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
- C10M2207/2835—Esters of polyhydroxy compounds used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/04—Molecular weight; Molecular weight distribution
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/54—Fuel economy
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/02—Bearings
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/04—Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
Abstract
Description
(1)本発明の潤滑油組成物は、(A)100℃における動粘度が2〜6mm2/s、%CAが0.5%以下、3級炭素分が7%以上である鉱油系基油と(B)100℃における動粘度が6mm2/s以上、160mm2/s以下のポリ−α−オレフィン及び/又はその水素化物を基油全量基準で2〜40質量%配合してなる基油に、(D)重量平均分子量が5,000以上、200,000以下のポリ(メタ)アクリレート系粘度指数向上剤を含有することを特徴とする潤滑油組成物である。
(2)また、前記潤滑油組成物において、(B)成分のポリ−α−オレフィンが、100℃における動粘度が(B−1)3.5mm2/s以上15mm2/s以下と(B−2)15mm2/sを超え160mm2/s以下の少なくとも2種類のポリ−α−オレフィン及び/又はその水素化物の混合物であることが好ましい。
(3)前記基油がさらに、(C)100℃における動粘度が2〜10mm2/sのエステル系基油を基油組成物全量基準で5〜20質量%含有することが好ましい。
(4)また、前記(C)エステル系基油が、多価アルコールエステル系基油であることが好ましい。
(5)また、前記潤滑油組成物において、(D)成分のポリ(メタ)アクリレート系粘度指数向上剤が、(D−1)分散型ポリ(メタ)アクリレート系粘度指数向上剤であるが好ましい。
(6)また、前記潤滑油組成物において、(D)成分のポリ(メタ)アクリレート系粘度指数向上剤が、(D−2)一般式(1)で表わされるモノマーから誘導される構成単位を含む非分散型ポリ(メタ)アクリレート系粘度指数向上剤であることが好ましい。
(A)成分の潤滑油基油の100℃における動粘度が2mm2/s未満の場合は、極圧性やベアリングの疲労寿命が著しく低下することにより装置の信頼性が低下するため好ましくない。一方、6mm2/sを超えると粘度増加により省エネ性が低下する。
なお、本発明でいう%CAとは、ASTM D 3238−85に準拠した方法(n−d−M環分析)により求められる芳香族炭素数の全炭素数に対する百分率を意味する。
(A)成分の潤滑油基油の%CNが3%未満の場合、金属疲労寿命が十分ではなく、また15%を超えると酸化安定性や粘度指数が低下する。
なお、本発明でいう%CNとは、ASTM D 3238−85に準拠した方法(n−d−M環分析)により求められるナフテン環構造を構成する炭素数の全炭素数に対する百分率を意味する。
なお、本発明では、13C−NMRの測定の際に、サンプルとして試料0.5gに重クロロホルム3gを加えて希釈したものを使用し、測定温度を室温、共鳴周波数を100MHzとした。また、測定法はゲート付でカップリング法を使用した。ただし、同等の結果が得られるのであればその他の方法を用いてもよい。
(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による留出油(WVGO)
(3)潤滑油脱ろう工程により得られるワックス(スラックワックス等)及び/又はガストゥリキッド(GTL)プロセス等により得られる合成ワックス(フィッシャートロプシュワックス、GTLワックス等)
(4)基油(1)〜(3)から選ばれる1種又は2種以上の混合油及び/又は当該混合油のマイルドハイドロクラッキング処理油
(5)基油(1)〜(4)から選ばれる2種以上の混合油
(6)基油(1)、(2)、(3)、(4)又は(5)の脱れき油(DAO)
(7)基油(6)のマイルドハイドロクラッキング処理油(MHC)
(8)基油(1)〜(7)から選ばれる2種以上の混合油
(9)上記基油(1)〜(8)から選ばれる基油又は当該基油から回収された潤滑油留分を水素化分解し、その生成物又はその生成物から蒸留等により回収される潤滑油留分について溶剤脱ろうや接触脱ろうなどの脱ろう処理を行い、または当該脱ろう処理をした後に蒸留することによって得られる水素化分解鉱油
(10)上記基油(1)〜(8)から選ばれる基油又は当該基油から回収された潤滑油留分を水素化異性化し、その生成物又はその生成物から蒸留等により回収される潤滑油留分について溶剤脱ろうや接触脱ろうなどの脱ろう処理を行い、または、当該脱ろう処理をしたあとに蒸留することによって得られる水素化異性化鉱油
また、上記(9)又は(10)の潤滑油基油を得るに際して、必要に応じて溶剤精製処理及び/又は水素化仕上げ処理工程を更に設けてもよい。
上記範囲より少ないと、本成分による粘度温度特性が十分発揮されないし、多すぎると後述する(B)成分の量が少なくなり、(B)成分との組合せによる疲労寿命ならびに低温粘度特性効果が低下する。
(a)1価アルコールと1塩基酸とのエステル
(b)多価アルコールと1塩基酸とのエステル
(c)1価アルコールと多塩基酸とのエステル
(d)多価アルコールと多塩基酸とのエステル
(e)1価アルコール及び多価アルコールとの混合物と、多塩基酸との混合エステル
(f)多価アルコールと、1塩基酸及び多塩基酸の混合物との混合エステル
(g)1価アルコール及び多価アルコールとの混合物と、1塩基酸及び多塩基酸の混合物との混合エステル
また、上記1塩基酸又は多塩基酸としては、炭素数1〜30、好ましくは炭素数4〜20、より好ましくは炭素数6〜18の炭化水素基を有する1塩基酸又は多塩基酸類が挙げられる。
ここでいう炭素数1〜30の炭化水素基としては、アルキル基、アルケニル基、シクロアルキル基、アルキルシクロアルキル基、アリール基、アルキルアリール基、アリールアルキル基等の炭化水素基が挙げられる。
基油の粘度は疲労寿命に大きく影響し、高いほうが、基本的に寿命が長くなるが、低温粘度が悪化するため適正な粘度範囲が存在する。
重量平均分子量が5,000未満の場合には粘度温度特性の向上効果や粘度指数向上効果が小さく、重量平均分子量が200,0000を超える場合にはせん断安定性や基油への溶解性、貯蔵安定性が悪くなるおそれがある。
ALC/GPC装置に東ソー社製のGMHHR−M(7.8mmID×30cm)のカラムを2本直列に使用し、溶媒としてはテトラヒドロフラン、温度23℃、流速1mL/分、試料濃度1質量%、試料注入量75μL、検出器示差屈折率計(RI)で測定したポリスチレン換算の重量平均分子量を意味する。
(D)粘度指数向上剤の含有量が1質量%より少なくなると、粘度指数向上効果や製品粘度の低減効果が小さくなることから、省燃費性の向上が図れなくなるおそれがある。また、20質量%よりも多くなると、製品コストが大幅に上昇すると共に、基油粘度を低下させる必要が出てくることから、厳しい潤滑条件(高温高せん断条件)における潤滑性能を低下させ、摩耗や焼き付き、疲労破壊等の不具合が発生原因となる。
(D−1a)R2が炭素数1〜4のアルキル基である(メタ)アクリレート
(D−1b)R2が炭素数5〜10のアルキル基である(メタ)アクリレート
(D−1c)R2が炭素数11〜19のアルキル基である(メタ)アクリレート
(D−1d)R2が炭素数20以上のアルキル基である(メタ)アクリレート
(D−1e)極性基含有モノマー
(D−1a)成分:好ましくは25mol%以上、より好ましくは45mol%以上、更に好ましくは65mol%以上、好ましくは95mol%以下、より好ましくは90mol%以下、さらに好ましくは85mol%以下。
(D−1b)成分:好ましくは0mol%以上、好ましくは50mol%以下、より好ましくは20mol%以下。
(D−1c)成分:好ましくは0mol%以上、より好ましくは5mol%以上、更に好ましくは10mol%以上、好ましくは60mol%以下、より好ましくは45mol%以下、さらに好ましくは30mol%以下。
(D−1d)成分:好ましくは1mol%以上、より好ましくは3mol%以上、更に好ましくは5mol%以上、好ましくは55mol%以下、より好ましくは35mol%以下、さらに好ましくは15mol%以下。
(D−1e)成分:0.1mol%以上、好ましくは0.3mol%以上、より好ましくは0.5mol%以上、さらに好ましくは1mol%以上、最も好ましくは2mol%以上、好ましくは20mol%以下、より好ましくは10mol%以下、さらに好ましくは5mol%以下。
(D−2a)R2が炭素数1〜4のアルキル基である(メタ)アクリレート
(D−2b)R2が炭素数5〜10のアルキル基である(メタ)アクリレート
(D−2c)R2が炭素数11〜19のアルキル基である(メタ)アクリレート
(D−2d)R2が炭素数20以上のアルキル基である(メタ)アクリレート
(D−2a)成分:好ましくは25mol%以上、より好ましくは45mol%以上、更に好ましくは65mol%以上、好ましくは95mol%以下、より好ましくは90mol%以下、更に好ましくは85mol%以下。
(D−2b)成分:好ましくは0mol%以上、好ましくは50mol%以下、より好ましくは20mol%以下。
(D−2c)成分:好ましくは0mol%以上、より好ましくは5mol%以上、更に好ましくは10mol%以上、好ましくは60mol%以下、より好ましくは45mol%以下、更に好ましくは30mol%以下。
(D−2d)成分:好ましくは0.1mol%以上、より好ましくは0.5mol%以上、更に好ましくは1mol%以上、特に好ましくは2mol%以上、最も好ましくは4mol%以上、好ましくは50mol%以下、より好ましくは35mol%以下、更に好ましくは20mol%以下、特に好ましくは15mol%以下。
(D−3)ポリ(メタ)アクリレート系の流動点降下剤の重量平均分子量は、50,000以上、200,000以下が好ましい。50,000未満では流動点降下性に乏しく、200,000を超えると剪断安定が低下するため好ましくない。
(D−3)ポリ(メタ)アクリレート系の流動点降下剤の添加量は、組成物全量基準で0.05質量%以上、5%質量以下が好ましい。0.1質量%以上がより好ましく、3%質量以下がより好ましい。0.05質量%未満では流動点降下性に乏しく、5質量%を超えると剪断による粘度低下が大きく、好ましくない。
中でも本発明の潤滑油組成物においては、アルカリ土類金属スルホネートまたはアルカリ土類フェネートが好ましい。最も好ましくはアルカリ土類金属スルホネートである。これは、(F)成分の金属系清浄剤の中では、スルホネートが最も摩耗防止性能に優れており、ついでフェネートが優れていることによる。
なお、ここでいう全塩基価とは、JISK2501「石油製品及び潤滑油−中和価試験法」の7.に準拠して測定される過塩素酸法による全塩基価を意味する。
R1−Sx−R2 (5)
一般式(5)において、R1は炭素数2〜15のアルケニル基、R2は炭素数2〜15のアルキル基またはアルケニル基を示し、xは1〜8の整数を示す。
この化合物は炭素数2〜15のオレフィンまたはその2〜4量体を硫黄、塩化硫黄等の硫化剤と反応させることによって得ることができる。オレフィンとしては、例えば、プロピレン、イソブテン、ジイソブテンなどが好ましく用いられる。
R3−Sy−R4 (6)
一般式(6)において、R3及びR4は、それぞれ個別に、炭素数1〜20のアルキル基(シクロアルキル基も含む)、炭素数6〜20のアリール基、炭素数7〜20のアリールアルキル基を示し、それらは互いに同一であっても異なっていてもよく、yは2〜8の整数を示す。
アミン化合物としては、炭素数6〜30の直鎖状若しくは分枝状、好ましくは直鎖状の脂肪族モノアミン、直鎖状若しくは分枝状、好ましくは直鎖状の脂肪族ポリアミン、又はこれら脂肪族アミンのアルキレンオキシド付加物等が例示できる。イミド化合物としては、炭素数6〜30の直鎖状若しくは分岐状のアルキル基又はアルケニル基を有するコハク酸イミド及び/又はそのカルボン酸、ホウ酸、リン酸、硫酸等による変性化合物等が挙げられる。脂肪酸エステルとしては、炭素数7〜31の直鎖状又は分枝状、好ましくは直鎖状の脂肪酸と、脂肪族1価アルコール又は脂肪族多価アルコールとのエステル等が例示できる。脂肪酸アミドとしては、炭素数7〜31の直鎖状又は分枝状、好ましくは直鎖状の脂肪酸と、脂肪族モノアミン又は脂肪族ポリアミンとのアミド等が例示できる。脂肪酸金属塩としては、炭素数7〜31の直鎖状又は分枝状、好ましくは直鎖状の脂肪酸の、アルカリ土類金属塩(マグネシウム塩、カルシウム塩等)や亜鉛塩等が挙げられる。
特に手動変速機用摩擦調整剤として、硫化油脂が好ましく使用される。硫化油脂としては、例えば、硫化ラード、硫化なたね油、硫化ひまし油、硫化大豆油、硫化米ぬか油などの油;硫化オレイン酸などの二硫化脂肪酸;及び硫化オレイン酸メチルなどの硫化エステルを挙げることができる。
ここでいう100℃における動粘度とは、ASTM D−445に規定される100℃での動粘度を示す。100℃における動粘度が4mm2/s未満の場合には、潤滑性不足を来たすおそれがあり、10mm2/sを超える場合には必要な低温粘度および十分な省燃費性能が得られないおそれがある。
表1に各種の潤滑油基油及び添加剤を配合量と性能を記載した。基油の配合量(質量%)は基油組成物全量基準であり、各添加剤の添加量(質量%)は潤滑油組成物全量基準である。
得られた各組成物について、疲労寿命を以下の(1)に示す疲労寿命試験により評価した。また、初期および長期間使用後の極圧性を以下の(2)に示す極圧性試験により評価した。また(3)に示す酸化安定性試験結果を記載した。
(a)FZG
FZG試験機を用いて以下の条件で運転を行い、歯車にピッチングが発生するまでのギヤの疲労寿命を評価した。
[条件]荷重ステージ:12、油温:120℃、回転数:620rpm
(a)ASTM D2783に準拠し、高速四球試験機を用い、各潤滑油組成物の1800rpmにおける最大非焼付き荷重(LNSL)を測定した。
(b)ASTM D4172に準拠し、高速四球試験機を用い、各潤滑油組成物の1800rpm、荷重392N、試験時間1時間における摩耗痕径を測定した。
(c)ASTM D3233に準拠し、ファレックス試験機を用い、各潤滑油組成物の290rpmにおける110℃での焼付荷重を測定した。
JIS K 2514 4.(内燃機関用潤滑油酸化安定度試験方法)に準拠して実施し、動粘度比を測定した。
Claims (6)
- (A)100℃における動粘度が2〜6mm2/s、%CAが0.5%以下、3級炭素分が7%以上である鉱油系基油と(B)100℃における動粘度が6mm2/s以上、160mm2/s以下のポリ−α−オレフィン及び/又はその水素化物を基油全量基準で2〜40質量%配合してなる基油に、(D)重量平均分子量が5,000以上、200,000以下のポリ(メタ)アクリレート系粘度指数向上剤を含有することを特徴とする潤滑油組成物。
- 前記(B)成分のポリ−α−オレフィンが、100℃における動粘度が(B−1)3.5mm2/s以上15mm2/s以下と(B−2)15mm2/sを超え160mm2/s以下の少なくとも2種類のポリ−α−オレフィン及び/又はその水素化物の混合物であることを特徴とする請求項1に記載の潤滑油組成物。
- 基油が(C)100℃における動粘度が2〜10mm2/sのエステル系基油を基油組成物全量基準で5〜20質量%含有することを特徴とする請求項1または請求項2に記載の潤滑油組成物。
- 前記(C)エステル系基油が、多価アルコールエステル系基油であることを特徴とする請求項3に記載の潤滑油組成物。
- (D)成分のポリ(メタ)アクリレート系粘度指数向上剤が、(D−1)分散型ポリ(メタ)アクリレート系粘度指数向上剤であることを特徴とする請求項1〜請求項4のいずれかに記載の潤滑油組成物。
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JP2004277712A (ja) * | 2003-02-27 | 2004-10-07 | Nippon Oil Corp | 4サイクルエンジン油基油及び組成物 |
WO2007001000A1 (ja) * | 2005-06-29 | 2007-01-04 | Nippon Oil Corporation | 油圧作動油用基油、及び組成物 |
JP2008156527A (ja) * | 2006-12-25 | 2008-07-10 | Nippon Oil Corp | 潤滑油組成物 |
WO2010140562A1 (ja) * | 2009-06-04 | 2010-12-09 | 新日本石油株式会社 | 潤滑油組成物 |
JP2011168677A (ja) * | 2010-02-17 | 2011-09-01 | Idemitsu Kosan Co Ltd | 無段変速機用潤滑油組成物 |
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JP2004277712A (ja) * | 2003-02-27 | 2004-10-07 | Nippon Oil Corp | 4サイクルエンジン油基油及び組成物 |
WO2007001000A1 (ja) * | 2005-06-29 | 2007-01-04 | Nippon Oil Corporation | 油圧作動油用基油、及び組成物 |
JP2008156527A (ja) * | 2006-12-25 | 2008-07-10 | Nippon Oil Corp | 潤滑油組成物 |
WO2010140562A1 (ja) * | 2009-06-04 | 2010-12-09 | 新日本石油株式会社 | 潤滑油組成物 |
JP2011168677A (ja) * | 2010-02-17 | 2011-09-01 | Idemitsu Kosan Co Ltd | 無段変速機用潤滑油組成物 |
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