EP3037507A1 - Composition d'huile lubrifiante pour amortisseur - Google Patents
Composition d'huile lubrifiante pour amortisseur Download PDFInfo
- Publication number
- EP3037507A1 EP3037507A1 EP14838669.1A EP14838669A EP3037507A1 EP 3037507 A1 EP3037507 A1 EP 3037507A1 EP 14838669 A EP14838669 A EP 14838669A EP 3037507 A1 EP3037507 A1 EP 3037507A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- group
- carbon atoms
- shock absorber
- lubricating oil
- oil composition
- 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 77
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 74
- 230000035939 shock Effects 0.000 title claims abstract description 74
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 68
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 72
- -1 ester amine salt Chemical class 0.000 claims abstract description 57
- 125000003342 alkenyl group Chemical group 0.000 claims abstract description 35
- 239000003921 oil Substances 0.000 claims abstract description 30
- 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 30
- 150000003512 tertiary amines Chemical class 0.000 claims abstract description 28
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 26
- 239000002253 acid Substances 0.000 claims abstract description 24
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 21
- 239000011574 phosphorus Substances 0.000 claims abstract description 21
- 239000002480 mineral oil Substances 0.000 claims abstract description 19
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 19
- 239000002199 base oil Substances 0.000 claims abstract description 17
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 15
- 125000004122 cyclic group Chemical group 0.000 claims description 27
- 230000002378 acidificating effect Effects 0.000 claims description 20
- 125000006165 cyclic alkyl group Chemical group 0.000 claims description 17
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 11
- 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 claims description 11
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 5
- 229910000906 Bronze Inorganic materials 0.000 description 25
- 239000010974 bronze Substances 0.000 description 25
- 239000003795 chemical substances by application Substances 0.000 description 24
- 229920001971 elastomer Polymers 0.000 description 23
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 20
- 150000001412 amines Chemical class 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 11
- 239000002244 precipitate Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 239000002518 antifoaming agent Substances 0.000 description 8
- 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 8
- 235000014113 dietary fatty acids Nutrition 0.000 description 7
- 239000000194 fatty acid Substances 0.000 description 7
- 229930195729 fatty acid Natural products 0.000 description 7
- 150000004665 fatty acids Chemical class 0.000 description 7
- 150000002430 hydrocarbons Chemical class 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 125000005064 octadecenyl group Chemical group C(=CCCCCCCCCCCCCCCCC)* 0.000 description 7
- 239000003963 antioxidant agent Substances 0.000 description 6
- 125000001204 arachidyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 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 6
- 229920001296 polysiloxane Polymers 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- 229920001577 copolymer Polymers 0.000 description 5
- 230000007774 longterm Effects 0.000 description 5
- 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 5
- 125000001117 oleyl 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])=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 5
- 229920000193 polymethacrylate Polymers 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 125000002511 behenyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 4
- 125000005066 dodecenyl group Chemical group C(=CCCCCCCCCCC)* 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 125000000755 henicosyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 125000002463 lignoceryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 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 4
- 239000006078 metal deactivator Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 125000001196 nonadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 150000003871 sulfonates Chemical class 0.000 description 4
- 125000005063 tetradecenyl group Chemical group C(=CCCCCCCCCCCCC)* 0.000 description 4
- 125000002469 tricosyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 4
- 125000005040 tridecenyl group Chemical group C(=CCCCCCCCCCCC)* 0.000 description 4
- 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 4
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 230000003078 antioxidant effect Effects 0.000 description 3
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 3
- 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 3
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 125000005187 nonenyl group Chemical group C(=CCCCCCCC)* 0.000 description 3
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 description 3
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 239000002530 phenolic antioxidant Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 150000003873 salicylate salts Chemical class 0.000 description 3
- 125000005065 undecenyl group Chemical group C(=CCCCCCCCCC)* 0.000 description 3
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 229930195735 unsaturated hydrocarbon Chemical group 0.000 description 3
- 239000001993 wax Substances 0.000 description 3
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Chemical compound OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 2
- YWWVWXASSLXJHU-AATRIKPKSA-N (9E)-tetradecenoic acid Chemical compound CCCC\C=C\CCCCCCCC(O)=O YWWVWXASSLXJHU-AATRIKPKSA-N 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 2
- QGLWBTPVKHMVHM-KTKRTIGZSA-N (z)-octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCN QGLWBTPVKHMVHM-KTKRTIGZSA-N 0.000 description 2
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 2
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 2
- XDOFQFKRPWOURC-UHFFFAOYSA-N 16-methylheptadecanoic acid Chemical compound CC(C)CCCCCCCCCCCCCCC(O)=O XDOFQFKRPWOURC-UHFFFAOYSA-N 0.000 description 2
- BVUXDWXKPROUDO-UHFFFAOYSA-N 2,6-di-tert-butyl-4-ethylphenol Chemical compound CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 BVUXDWXKPROUDO-UHFFFAOYSA-N 0.000 description 2
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 2
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 239000005642 Oleic acid Substances 0.000 description 2
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 2
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 2
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 150000003939 benzylamines Chemical class 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- NAPSCFZYZVSQHF-UHFFFAOYSA-N dimantine Chemical compound CCCCCCCCCCCCCCCCCCN(C)C NAPSCFZYZVSQHF-UHFFFAOYSA-N 0.000 description 2
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 125000002950 monocyclic group Chemical group 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- SECPZKHBENQXJG-FPLPWBNLSA-N palmitoleic acid Chemical compound CCCCCC\C=C/CCCCCCCC(O)=O SECPZKHBENQXJG-FPLPWBNLSA-N 0.000 description 2
- 125000002255 pentenyl group Chemical group C(=CCCC)* 0.000 description 2
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 2
- 230000003449 preventive effect Effects 0.000 description 2
- 150000003141 primary amines Chemical class 0.000 description 2
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 150000003335 secondary amines Chemical class 0.000 description 2
- 150000003890 succinate salts Chemical class 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical class O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 239000003760 tallow Substances 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 description 1
- JTQQDDNCCLCMER-CLFAGFIQSA-N (z)-n-[(z)-octadec-9-enyl]octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCNCCCCCCCC\C=C/CCCCCCCC JTQQDDNCCLCMER-CLFAGFIQSA-N 0.000 description 1
- ZORQXIQZAOLNGE-UHFFFAOYSA-N 1,1-difluorocyclohexane Chemical compound FC1(F)CCCCC1 ZORQXIQZAOLNGE-UHFFFAOYSA-N 0.000 description 1
- MBIZXFATKUQOOA-UHFFFAOYSA-N 1,3,4-thiadiazole Chemical compound C1=NN=CS1 MBIZXFATKUQOOA-UHFFFAOYSA-N 0.000 description 1
- IPVPZVIAIGSFKC-UHFFFAOYSA-N 18-ethylicosan-1-amine Chemical compound CCC(CC)CCCCCCCCCCCCCCCCCN IPVPZVIAIGSFKC-UHFFFAOYSA-N 0.000 description 1
- GPNYZBKIGXGYNU-UHFFFAOYSA-N 2-tert-butyl-6-[(3-tert-butyl-5-ethyl-2-hydroxyphenyl)methyl]-4-ethylphenol Chemical compound CC(C)(C)C1=CC(CC)=CC(CC=2C(=C(C=C(CC)C=2)C(C)(C)C)O)=C1O GPNYZBKIGXGYNU-UHFFFAOYSA-N 0.000 description 1
- BYRKZZJQBLXWPY-UHFFFAOYSA-N 3-(3-dodecanoyloxy-3-oxopropyl)sulfanylpropanoyl dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC(=O)CCSCCC(=O)OC(=O)CCCCCCCCCCC BYRKZZJQBLXWPY-UHFFFAOYSA-N 0.000 description 1
- MDWVSAYEQPLWMX-UHFFFAOYSA-N 4,4'-Methylenebis(2,6-di-tert-butylphenol) Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 MDWVSAYEQPLWMX-UHFFFAOYSA-N 0.000 description 1
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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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/1006—Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/102—Aliphatic fractions
- C10M2203/1025—Aliphatic fractions used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
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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
- C10M2215/08—Amides
- C10M2215/082—Amides containing hydroxyl groups; Alkoxylated derivatives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/10—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring
- C10M2219/104—Heterocyclic compounds containing sulfur, selenium or tellurium compounds in the ring containing sulfur and carbon with nitrogen or oxygen in the ring
- C10M2219/106—Thiadiazoles
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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
- 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
- C10M2223/041—Triaryl phosphates
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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
- 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
- C10M2223/043—Ammonium or amine salts thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- 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
- C10M2223/049—Phosphite
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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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/06—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds
- C10M2223/065—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having phosphorus-to-carbon bonds containing sulfur
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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
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/02—Unspecified siloxanes; Silicones
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/10—Inhibition of oxidation, e.g. anti-oxidants
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/36—Seal compatibility, e.g. with rubber
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/08—Hydraulic fluids, e.g. brake-fluids
Definitions
- the present invention relates to a lubricating oil composition for a shock absorber, in particular, to a lubricating oil composition for a shock absorber that is for use for a shock absorber for cars.
- a suspension integrated with a shock absorber for reducing the vibration of the body caused by road surface roughness, the shaking thereof which occurs in quick acceleration or sudden braking, and the like.
- the structure of the shock absorber is based on a cylindrical structure that utilizes the resistance of oil to flow.
- used is the structure having small holes bored in a hydraulic piston.
- a bush is provided to be a bearing and sealability is secured by an oil seal.
- the bush is formed of bronze, and the oil seal is formed of rubber.
- a shock absorber may receive a great lateral force, and in the case, friction is generated in a bush.
- the generation of friction may be a factor to worsen the riding comfort performance, and therefore it is desired to reduce friction to the bush.
- the tightening force of the oil seal is increased to improve the dust resistance, it is also desired to reduce the friction coefficient to the oil seal in order to better the riding comfort performance.
- a lubricating oil composition for a shock absorber in which a phosphorus acid ester as an extreme-pressure agent is blended and a secondary amine is further blended, for example, as shown in PTL 1.
- this lubricating oil composition could not still sufficiently reduce the friction to bronze-made bushes and rubber-made oil seals.
- the present invention has been made in consideration of the above-mentioned problems, and its object is to provide a lubricating oil composition for a shock absorber capable of reducing the friction coefficient to bronze-made bushes and rubber-made oil seals without generating precipitates for a long period of time, even with blending an extreme-pressure agent therein.
- the present inventors have assiduously studied and, as a result, have found that, with blending a specific zinc dithiophosphate in a lubricating oil composition for a shock absorber in addition to a specific tertiary amine therein, the oil composition can reduce the friction coefficient to rubber and bronze.
- the present inventors have ascertained that the precipitates caused by an extreme-pressure agent is generated through the reaction with a zinc dithiophosphate, and have found that, when a phosphorus acid ester amine salt which does not react with a zinc dithiophosphate for a long period of time is blended as an extreme-pressure agent, the friction coefficient to rubber and bronze can be reduced without generation of precipitates, and have completed the present invention as described below.
- a lubricating oil composition for a shock absorber capable of reducing the friction coefficient to bronze-made bushes and rubber-made oil seals without generation of precipitates for a long period of time, even with blending an extreme-pressure agent therein.
- the lubricating oil composition for a shock absorber of the present invention contains (A) a base oil, (B) a tertiary amine, (C) a zinc dithiophosphate and (D) a phosphorus acid ester amine salt.
- base oil in the lubricating oil composition for a shock absorber of the present invention usable are mineral oil and/or synthetic oil.
- mineral oil examples include paraffin-based mineral oil, intermediate-based mineral oil, naphthene-based mineral oil and the like, which are obtained by usual refining processes such as solvent refining, hydrorefining or the like, those prepared by isomerizing wax produced through Fischer-Tropsch process or the like (gas-to-liquid wax) or mineral oil-based wax, and the like.
- Examples of the synthetic oil include hydrocarbon synthetic oil, ether synthetic oil, etc.
- hydrocarbon synthetic oil there are mentioned ⁇ -olefin oligomers such as polybutene, polyisobutylene, 1-octene oligomer, 1-decene oligomer, ethylene-propylene copolymer, etc. and hydrides thereof; alkylbenzene, alkylnaphthalene, etc.
- ether synthetic oil include polyoxyalkylene glycol, polyphenyl ether, etc.
- the base oil one alone of the above-mentioned mineral oil and/or the above-mentioned synthetic oil may be used, or two or more of them may be used. Further, a combination of at least one mineral oil and at least one synthetic oil may be used.
- the base oil preferred is a mineral oil among the above, from the viewpoint of the solubility of additives therein.
- the kinematic viscosity of the base oil is not specifically limited. However, in the case where the lubricating oil composition for a shock absorber of the present invention is used as a shock absorber oil for cars for example, the kinematic viscosity at 40°C thereof is preferably from 2 to 20 mm 2 /s, more preferably from 5 to 14 mm 2 /s. In the case where two or more of mineral oil and/or synthetic oil are used, the above numerical values mean the kinematic viscosity of the base oil of the mixture thereof.
- the content ratio of the base oil (A) in the total amount of the lubricating oil composition for a shock absorber is preferably from 80 to 99% by mass, more preferably from 90 to 98% by mass.
- the tertiary amine for use in the lubricating oil composition for a shock absorber of the present invention is represented by the following general formula (I).
- R 1 and R 2 each independently represent an aliphatic hydrocarbon group having from 1 to 5 carbon atoms
- R 3 represents an aliphatic hydrocarbon group having from 12 to 24 carbon atoms.
- R 1 and R 2 each independently represent a linear, branched or cyclic alkyl group having from 1 to 5 carbon atoms or a linear, branched or cyclic alkenyl group having from 1 to 5 carbon atoms.
- R 1 and R 2 may be different from each other or may be the same, but preferably, the two are the same.
- R 3 is preferably a linear, branched or cyclic alkyl group having from 12 to 24 carbon atoms or a linear, branched or cyclic alkenyl group having from 12 to 24 carbon atoms.
- the carbon number of R 1 and R 2 when the carbon number of R 1 and R 2 were larger than 5, in particular, the friction coefficient to bronze could not be sufficiently lowered.
- the carbon number of R 1 and R 2 is preferably smaller, and each carbon number is preferably 1 or 2, and each carbon number is most preferably 1.
- R 1 and R 2 each are an alkyl group.
- examples of R 1 and R 2 include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a vinyl group, a propenyl group, a butenyl group and a pentenyl group, and these may be linear, branched or cyclic. Among these, preferred are a methyl group and an ethyl group, and most preferred is a methyl group.
- the carbon number of R 3 in the tertiary amine (B) falls outside the above-mentioned range, there might occur some disadvantages that for example the solubility in base oil worsens, or the friction coefficient to bronze could not sufficiently lower. From these viewpoints, the carbon number of R 3 is preferably from 16 to 20, more preferably 18.
- the main component thereof is preferably a tertiary amine where R 3 has from 16 to 20 carbon atoms, and is more preferably a tertiary amine where the carbon number of the group is 18.
- the main component means that the component is 50% by mass or more of the total amount of the tertiary amine (B), and the content ratio is preferably 80% by mass or more, more preferably 90% by mass or more.
- R 3 is preferably an alkyl group. Moreover, R 3 is preferably linear.
- alkyl group of R 3 examples include a dodecyl group, a tridecyl group, a tetradecyl group, a pentadecyl group, a hexadecyl group, a heptadecyl group, an octadecyl group, a nonadecyl group, an eicosyl group, a heneicosyl group, a docosyl group, a tricosyl group, and a tetracosyl group, and these may be linear, branched or cyclic.
- alkenyl group examples include a dodecenyl group, a tridecenyl group, a tetradecenyl group, a pentadecenyl group, a hexadecenyl group, a heptadecenyl group, an octadecenyl group, a nonadecenyl group, an eicosenyl group, a heneicosenyl group, a docosenyl group, a tricosenyl group and a tetracosenyl group, and these may be linear, branched or cyclic, and in these, the double bond may be at any position.
- a hexadecyl group an octadecyl group such as a stearyl group, an octadecenyl group such as an oleyl group, an eicosyl group, etc., and most preferred is a stearyl group.
- Preferred specific compounds of the tertiary amine (B) include dimethylmonostearylamine, diethylstearylamine, etc.
- the tertiary amine (B) is contained in an amount of from 0.01 to 3% by mass relative to the total amount of the lubricating oil composition for a shock absorber. Falling within the range, the tertiary amine can reduce the friction coefficient for bronze with the suitable amount. From this viewpoint, more preferably, the tertiary amine is contained in an amount of from 0.1 to 1.5% by mass relative to the total amount of the lubricating oil composition for a shock absorber.
- the zinc dithiophosphate for use in the present invention is represented by the following general formula (II).
- R 4 to R 7 each independently represent a linear, branched or cyclic alkyl group having from 1 to 24 carbon atoms or a linear, branched or cyclic alkenyl group having from 1 to 24 carbon atoms. These may be different from each other or may be the same, but from the viewpoint of easiness in production, these are preferably the same.
- use of the zinc dithiophosphate along with the tertiary amine can favorably lower the friction coefficient of the lubricating oil composition to bronze and rubber.
- the carbon number of R 4 to R 7 is preferably from 10 to 20, more preferably from 12 to 18.
- the friction coefficient for rubber can be effectively reduced.
- R 4 to R 7 are linear, and preferably R 4 to R 7 each are an alkyl group.
- Examples of the alkyl group of R 4 to R 7 include 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 nonyl 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, an octadecyl group, a nonadecyl group, an eicosyl group, a heneicosyl group, a docosyl group, a tricosyl group and a tetracosyl group, and these may be any of linear, branched or cyclic ones.
- alkenyl group examples include a vinyl group, a propenyl group, a butenyl group, a pentenyl group, a hexenyl group, a heptenyl group, an octenyl group, a nonenyl group, a decenyl group, an undecenyl group, a dodecenyl group, a tridecenyl group, a tetradecenyl group, a pentadecenyl group, a hexadecenyl group, a heptadecenyl group, an octadecenyl group, a nonadecenyl group, an eicosenyl group, a heneicosenyl group, a docosenyl group, a tricosenyl group and a tetracosenyl group, and these may be any of linear, branched or
- a dodecyl group such as a lauryl group, a tetradecyl group, a hexadecyl group, an octadecyl group such as a stearyl group, an eicosyl group, an octadecenyl group such as an oleyl group, and most preferred is a lauryl group.
- the zinc dithiophosphate (C) is contained in an amount of from 0.01 to 3% by mass relative to the total amount of the lubricating oil composition for a shock absorber. Falling within the above range, the zinc dithiophosphate (C) can reduce the friction to bronze and rubber with the suitable amount. From this viewpoint, more preferably, the zinc dithiophosphate (C) is contained in an amount of from 0.1 to 1.5% by mass relative to the total amount of the lubricating oil composition for a shock absorber.
- Examples of the phosphorus acid ester amine salt (D) include an acidic phosphoric acid ester amine salt obtained by reacting an acidic phosphoric acid ester and an amine, and/or an acidic phosphorous acid ester amine salt obtained by reacting an acidic phosphorous acid ester and an amine.
- an acidic phosphoric acid ester amine salt obtained by reacting an acidic phosphoric acid ester and an amine.
- preferred is an acidic phosphoric acid ester amine salt.
- the phosphorus acid ester amine salt (D) has a function as a so-called extreme-pressure agent, and can better wear-resistant properties while preventing burning out. Incidentally, even in long-term storage, the phosphorus acid ester amine salt (D) does not react with, for example, the zinc dithiophosphate (C) to generate precipitates.
- acidic phosphoric acid esters for example, those represented by the following general formula (III) are used.
- R 11 represents a hydrogen atom, an alkyl group having from 8 to 24 carbon atoms or an alkenyl group having from 8 to 24 carbon atoms. Of those, preferred is an alkyl group or an alkenyl group.
- R 12 represents an alkyl group having from 8 to 24 carbon atoms or an alkenyl group having from 8 to 24 carbon atoms.
- the alkyl group and the alkenyl group of R 11 and R 12 may be linear, branched or cyclic, but are preferably linear. Further, the alkyl group and the alkenyl group of R 11 and R 12 each preferably have from 12 to 24 carbon atoms, more preferably from 16 to 20 carbon atoms, and even more preferably, one or both of R 11 and R 12 have 18 carbon atoms.
- the main component of the acidic phosphoric acid ester to constitute the amine salt (D) is preferably one where R 11 and R 12 have from 16 to 20 carbon atoms, more preferably one where R 11 and R 12 have 18 carbon atoms.
- the wording "the main component" means that the content ratio of R 11 and R 12 having from 16 to 20 carbon atoms (or 18 carbon atoms) in the total amount of the alkyl group and the alkenyl group of R 11 and R 12 in the acidic phosphoric acid ester to constitute the amine salt (D) is 50% by mass or more, and the content ratio is preferably 80% by mass or more, more preferably 90% by mass or more.
- Examples of the alkyl group of R 11 and R 12 include an octyl group, a nonyl 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, an octadecyl group, a nonadecyl group, an eicosyl group, a heneicosyl group, a docosyl group, a tricosyl group and a tetracosyl group, and these may be any of linear, branched or cyclic ones.
- alkenyl group examples include an octenyl group, a nonenyl group, a decenyl group, an undecenyl group, a dodecenyl group, a tridecenyl group, a tetradecenyl group, a pentadecenyl group, a hexadecenyl group, a heptadecenyl group, an octadecenyl group, a nonadecenyl group, an eicosenyl group, a heneicosenyl group, a docosenyl group, a tricosenyl group and a tetracosenyl group, and these may be any of linear, branched or cyclic ones, and the double bond may be at any position therein.
- a linear alkyl or alkenyl group preferred is a linear alkyl or alkenyl group, and most preferred is an octadecenyl group such as an oleyl group.
- a specific example of the acidic phosphoric acid ester is dioleyl acid phosphate.
- acidic phosphorous acid esters for example, those represented by the following general formula (IV) are used.
- R 21 represents a hydrogen atom, an alkyl group having from 8 to 24 carbon atoms or an alkenyl group having from 8 to 24 carbon atoms. Of those, preferred is an alkyl group or an alkenyl group.
- R 22 represents an alkyl group having from 8 to 24 carbon atoms or an alkenyl group having from 8 to 24 carbon atoms.
- the alkyl group and the alkenyl group of R 21 and R 22 may be linear, branched or cyclic, but are preferably linear. Further, the alkyl group and the alkenyl group of R 21 and R 22 preferably have from 12 to 24 carbon atoms, more preferably from 16 to 20 carbon atoms. Even more preferably one or both of R 21 and R 22 have 18 carbon atoms.
- the main component of the acidic phosphorous acid ester to constitute the amine salt (D) is preferably one where R 21 and R 22 have from 16 to 20 carbon atoms, more preferably one where R 21 and R 22 have 18 carbon atoms.
- the wording "the main component" means that the content ratio of R 21 and R 22 having from 16 to 20 carbon atoms (or 18 carbon atoms) in the total amount of the alkyl group and the alkenyl group of R 21 and R 22 in the acidic phosphorous acid ester to constitute the amine salt (D) is 50% by mass or more, and the content ratio is preferably 80% by mass or more, more preferably 90% by mass or more.
- Examples of the alkyl group of R 21 and R 22 include an octyl group, a nonyl 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, an octadecyl group, a nonadecyl group, an eicosyl group, a heneicosyl group, a docosyl group, a tricosyl group and a tetracosyl group, and these may be any of linear, branched or cyclic ones.
- alkenyl group examples include an octenyl group, a nonenyl group, a decenyl group, an undecenyl group, a dodecenyl group, a tridecenyl group, a tetradecenyl group, a pentadecenyl group, a hexadecenyl group, a heptadecenyl group, an octadecenyl group, a nonadecenyl group, an eicosenyl group, a heneicosenyl group, a docosenyl group, a tricosenyl group and a tetracosenyl group, and these may be any of linear, branched or cyclic ones, and the double bond may be at any position therein.
- the amine to form the phosphorus acid ester amine salt may be any of primary amines, secondary amines and tertiary amines, and preferred are primary amines.
- the amine is represented by a general formula NR 3 , in which, preferably, from one to three of R's each are an aliphatic hydrocarbon group, and the remainder is a hydrogen atom.
- the aliphatic hydrocarbon group is preferably an alkyl group or an unsaturated hydrocarbon group having from 1 to 2 unsaturated bonds.
- the alkyl group and the unsaturated hydrocarbon group may be linear, branched or cyclic, but are preferably linear.
- the total amount of the aliphatic hydrocarbon group constituting the amine preferably, 80% by mass or more is an alkyl group and/or an unsaturated hydrocarbon group having one unsaturated bond.
- the carbon number of the above aliphatic hydrocarbon group is preferably from 6 to 20, more preferably from 12 to 20.
- amine examples include dilaurylamine, dimyristylamine, distearylamine, dioleylamine, trilaurylamine, trimyristyl amine, tristearylamine, trioleylamine, tallow amine, etc.
- alkyl amines may be used either singly or as combined.
- the content of the phosphorus acid ester amine salt (D) is preferably from 0.1 to 3% by mass relative to the total amount of the lubricating oil composition for a shock absorber, more preferably from 0.2 to 1% by mass.
- the component (D) is, after prepared as a phosphorus acid ester amine salt, mixed with the other components to produce the lubricating oil composition for a shock absorber, but a phosphorus acid ester and an amine may be separately blended in the composition and reacted in the composition to form the amine salt.
- the total amount of the acidic phosphoric acid ester and the acidic phosphorous acid ester not forming the amine salt is preferably less than 0.05% by mass, more preferably less than 0.01% by mass, and even more preferably, these are not contained in the lubricating oil composition for a shock absorber.
- the acidic phosphoric acid ester and the acidic phosphorous acid ester not forming the amine salt may react with the zinc dithiophosphate (C) to generate precipitate during long-term storage, but when the amount thereof is restricted to less than 0.05% by mass or so, precipitates hardly generate.
- the lubricating oil composition for a shock absorber of the present invention can suitably contain, as an optional additive component (E), at least one selected from ash-less dispersants, friction regulators, antioxidants, viscosity index improvers and antifoaming agents, within a range not detracting from the object of the present invention. Also if desired, this may contain any other additives heretofore generally used in lubricating oil compositions for a shock absorber, such as metal-based detergents, rust preventive agents, metal deactivators, pour-point depressants, etc.
- the content ratio of the optional additive component (E) in the total amount of the lubricating oil composition for a shock absorber is, in general, preferably 10% by mass or less, more preferably from 3 to 8% by mass.
- ash-less dispersant examples include succinimides, boron-containing succinimides, benzylamines, boron-containing benzylamines, succinates, amides of mono or dicarboxylic acids typified by fatty acid or succinic acid. Of those, preferred are fatty acid amides.
- the friction regulator examples include partial ester compounds to be obtained through reaction of a fatty acid and an aliphatic polyalcohol.
- the fatty acid is preferably a fatty acid having a linear or branched hydrocarbon group with from 6 to 30 carbon atoms, in which the carbon number of the hydrocarbon group is preferably from 8 to 24, more preferably from 10 to 20.
- fatty acid examples include saturated fatty acids such as caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachic acid, behenic acid, lignoceric acid, etc.; and unsaturated fatty acids such as myristoleic acid, palmitoleic acid, oleic acid, linoleic acid, etc.; and preferred is oleic acid.
- the aliphatic polyalcohol is a di- to hexa-alcohol, including ethylene glycol, glycerin, trimethylolpropane, pentaerythritol, sorbitol, sorbitan, etc. Preferred is sorbitan.
- sorbitan One alone or two or more of these partial ester compounds may be used either singly or as combined.
- aliphatic saturated monoamines and unsaturated monoamines having from 10 to 20 carbon atoms or so such as stearylamine, oleylamine, etc. are also preferably usable as the friction regulator.
- antioxidants examples include monocyclic phenolic antioxidants such as 2,6-di-tert-butyl-p-cresol, 2,6-di-tert-butyl-4-ethylphenol, etc.; polycyclic phenolic antioxidants such as 4,4'-methylenebis(2,6-di-tert-butylphenol), 2,2'-methylenebis(4-ethyl-6-tert-butylphenol), etc.; amine-based antioxidants including monoalkyldiphenylamine compounds such as monooctyldiphenylamine, monononyldiphenylamine, etc., dialkyldiphenylamine compounds such as 4,4'-dibutyldiphenylamine, 4,4'-dipentyldiphenylamine, 4,4'-dihexyldiphenylamine, 4,4'-diheptyldiphenylamine, 4,4'-dioctyldiphenylamine, 4,4'-dinon
- viscosity index improver examples include polymethacrylate, dispersive polymethacrylate, olefinic copolymer (for example, ethylene-propylene copolymer, etc.), dispersive olefinic copolymer, styrenic copolymer (for example, styrene-diene hydrogenated copolymer, etc.), etc.
- Preferred is polymethacrylate.
- the antifoaming agent preferred are high-molecular-weight silicone antifoaming agents. With containing the high-molecular-weight silicone antifoaming agent, the antifoaming ability is effectively demonstrated.
- the high-molecular-weight silicone antifoaming agent for example, organopolysiloxane and fluorinated organopolysiloxanes such as trifluoropropylmethyl silicone oil and the like are mentioned.
- Examples of the metal-based detergent include neutral metal sulfonates, neutral metal phenates, neutral metal salicylates, neutral metal phosphonates, basic sulfonates, basic phenates, basic salicylates, overbased sulfonates, overbased salicylates, overbased phosphonates, etc.
- Examples of the rust preventive agent include metal-typed sulfonates, succinates, etc.
- Examples of the metal deactivator include benzotriazole, thiadiazole, etc.
- Examples of the pour-point depressant include polymethacrylate having a weight-average molecular weight of from 50,000 to 150,000 or so, etc.
- the kinematic viscosity at 40°C of the lubricating oil composition for a shock absorber of the present invention is, from the viewpoint of low-temperature flow ability, preferably 18 mm 2 /s or less, more preferably from 2 to 15 mm 2 /s.
- the lubricating oil composition of the present invention can reduce the friction coefficient to bronze and rubber.
- the oil composition can better wear-resistant properties and burning-out resistance, and is therefore favorable as a lubricating oil composition for a shock absorber.
- the extreme-pressure agent is the phosphorus acid ester amine salt (D), which does not react with, for example, the zinc dithiophosphate (C) to generate precipitates.
- the friction coefficient ⁇ to rubber is preferably less than 0.09 under a load of from 1 to 3 kgf, and is preferably less than 0.08 under a load of from 5 to 7 kgf or so.
- the friction coefficient ⁇ to bronze is preferably less than 0.18 under a load of 1 kg or so, preferably less than 0.20 under a load of from 2 to 3 kgf, and preferably less than 0.28 under a load of from 5 to 7 kgf.
- the friction coefficient ⁇ to rubber and bronze falls within the above range, a riding comfort performance is bettered.
- the friction coefficient ⁇ is measured according to the method to be mentioned below.
- the lubricating oil composition for a shock absorber of the present invention can be used in any of a multi-cylinder shock absorber and a single-cylinder shock absorber, and can be used in any shock absorbers for cars and motorcycles. Especially preferred is use for cars.
- the lubricating oil composition for a shock absorber of the present invention is especially favorably used in a shock absorber having a bush whose inner wall being the slide face to a piston rod is at least formed of bronze such as phosphor bronze or the like and having an oil seal that is formed of rubber.
- this is further favorable for those in which the tightening force of the oil seal is increased to improve the dust resistance.
- the slide face of the piston rod to the bush is generally formed of chromium, for example, by chromium plating or the like.
- the lubricating oil composition for a shock absorber of the present invention can be also favorably used as a hydraulic oil for industrial use, a hydraulic oil for construction use, etc.
- NBR rubber
- a rubber plate was cut into a disc having a diameter of 15 mm, and pushed out by a ball having a diameter of 12.7 mm.
- a few drops of a sample oil were put onto the plate, running-in operation (at a rate of 20 mm/s for 2 minutes) was performed, and then the test was performed.
- the prepared lubricating oil composition for a shock absorber was put in an airtight container and kept therein in an environment at 23°C (room temperature) for 30 days, and then the appearance thereof was observed.
- the viscosity of the base oil prepared by mixing the base oil 1 and the base oil 2 in each of Examples and Comparative Examples is as shown in the Table.
- the lubricating oil compositions for a shock absorber can sufficiently reduce the friction coefficient to rubber and bronze in a broad load range.
- the extreme-pressure agent composed of the phosphorus acid ester amine salt (D) was blended, the oil composition did not generate any precipitate in storage for 1 month, and the long-term storage stability thereof is good.
- the lubricating oil compositions for a shock absorber not containing any one or both of the tertiary amine (B) and the zinc dithiophosphate (C) could not sufficiently lower the friction coefficient to rubber and bronze in a broad load range.
- Comparative Examples 4 and 5 when a phosphoric acid ester or a phosphorous acid ester was used as the extreme-pressure agent along with the zinc dithiophosphate, the composition generated precipitates after 1 month, and the long-term storage stability thereof was not good.
- the lubricating oil composition for a shock absorber of the present invention can be used in various shock absorbers, and for example, can be favorably used in both a multi-cylinder shock absorber and a single-cylinder shock absorber, and in addition, can be used in shock absorbers for both cars and motorcycles. Especially preferred is use for cars.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013173918 | 2013-08-23 | ||
| PCT/JP2014/072187 WO2015025977A1 (fr) | 2013-08-23 | 2014-08-25 | Composition d'huile lubrifiante pour amortisseur |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3037507A1 true EP3037507A1 (fr) | 2016-06-29 |
| EP3037507A4 EP3037507A4 (fr) | 2017-02-08 |
| EP3037507B1 EP3037507B1 (fr) | 2022-06-29 |
Family
ID=52483746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14838669.1A Active EP3037507B1 (fr) | 2013-08-23 | 2014-08-25 | Composition d'huile lubrifiante pour amortisseur |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20160369200A1 (fr) |
| EP (1) | EP3037507B1 (fr) |
| JP (1) | JP6353840B2 (fr) |
| KR (1) | KR20160042910A (fr) |
| CN (1) | CN105473693B (fr) |
| WO (1) | WO2015025977A1 (fr) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6661417B2 (ja) * | 2016-03-07 | 2020-03-11 | 出光興産株式会社 | 緩衝器用潤滑油組成物、及び緩衝器用潤滑油組成物の製造方法 |
| JPWO2017221446A1 (ja) * | 2016-06-21 | 2019-04-18 | Ｋｙｂ株式会社 | 作動油 |
| CA3031208A1 (fr) * | 2016-07-20 | 2018-01-25 | The Lubrizol Corporation | Sels d'amines de phosphate d'alkyle utilisables dans des lubrifiants |
| US11384308B2 (en) | 2016-07-20 | 2022-07-12 | The Lubrizol Corporation | Alkyl phosphate amine salts for use in lubricants |
| US11485927B2 (en) * | 2018-11-28 | 2022-11-01 | Cosmo Oil Lubricants Co., Ltd. | Lubricating oil composition |
| JP7404333B2 (ja) * | 2019-02-22 | 2023-12-25 | Ｅｎｅｏｓ株式会社 | 冷凍機油及び冷凍機用作動流体組成物 |
| WO2020218025A1 (fr) * | 2019-04-26 | 2020-10-29 | Ｋｙｂ株式会社 | Composition lubrifiante pour amortisseurs, additif pour ajustement de frottement, additif lubrifiant, amortisseur et procédé d'ajustement de frottement pour une composition lubrifiante pour des amortisseurs |
| DE112020004857T5 (de) * | 2019-10-11 | 2022-07-21 | Kyb Corporation | Schmiermittelzusammensetzungen für stossdämpfer, stossdämpfer und verfahren zur einstellung der reibung von schmiermitteln für stossdämpfer |
| JP2022022721A (ja) * | 2020-07-02 | 2022-02-07 | 出光興産株式会社 | 潤滑油組成物、緩衝器、及び潤滑油組成物の使用方法 |
| CN111849599B (zh) * | 2020-07-03 | 2022-11-08 | 浙江物得宝尔新材料有限公司 | 一种水溶性润滑液及铝冷轧的加工方法 |
| JP2024093384A (ja) * | 2022-12-27 | 2024-07-09 | 出光興産株式会社 | 潤滑油組成物 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2476271A (en) * | 1946-05-29 | 1949-07-19 | Standard Oil Co | Lubricating oil additive |
| JPS5845293A (ja) * | 1981-09-10 | 1983-03-16 | Idemitsu Kosan Co Ltd | 緩衝器用流体組成物 |
| JPH05255683A (ja) * | 1992-03-11 | 1993-10-05 | Tonen Corp | 緩衝器用油圧作動油組成物 |
| JPH05255682A (ja) * | 1992-03-11 | 1993-10-05 | Tonen Corp | 油圧作動油組成物 |
| JPH05331478A (ja) * | 1992-05-30 | 1993-12-14 | Tonen Corp | 油圧作動油組成物 |
| KR0145600B1 (ko) * | 1995-10-11 | 1998-08-01 | 전성원 | 윤활유 조성물 |
| US20070042916A1 (en) * | 2005-06-30 | 2007-02-22 | Iyer Ramnath N | Methods for improved power transmission performance and compositions therefor |
| CN101517055B (zh) | 2006-09-28 | 2014-03-05 | 出光兴产株式会社 | 缓冲器用润滑油组合物 |
| JP5426829B2 (ja) * | 2007-02-07 | 2014-02-26 | 昭和シェル石油株式会社 | 油圧シリンダーのビビリ、振動、鳴き防止用潤滑油組成物 |
| JP5150154B2 (ja) * | 2007-07-09 | 2013-02-20 | 出光興産株式会社 | 緩衝器用潤滑油組成物 |
| US9506010B2 (en) | 2009-09-25 | 2016-11-29 | Idemitsu Kosan Co., Ltd. | Lubricant composition and continuously-variable transmission |
| JP4949509B2 (ja) * | 2010-09-08 | 2012-06-13 | シェブロンジャパン株式会社 | 潤滑油組成物 |
| CN102533409B (zh) * | 2010-12-31 | 2013-08-14 | 中国石油化工股份有限公司 | 一种用于摩托车减震器的润滑油组合物 |
-
2014
- 2014-08-25 CN CN201480046145.3A patent/CN105473693B/zh active Active
- 2014-08-25 JP JP2015532932A patent/JP6353840B2/ja active Active
- 2014-08-25 WO PCT/JP2014/072187 patent/WO2015025977A1/fr active Application Filing
- 2014-08-25 KR KR1020167004385A patent/KR20160042910A/ko not_active Application Discontinuation
- 2014-08-25 EP EP14838669.1A patent/EP3037507B1/fr active Active
- 2014-08-25 US US14/910,845 patent/US20160369200A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2015025977A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3037507B1 (fr) | 2022-06-29 |
| WO2015025977A1 (fr) | 2015-02-26 |
| JP6353840B2 (ja) | 2018-07-04 |
| KR20160042910A (ko) | 2016-04-20 |
| JPWO2015025977A1 (ja) | 2017-03-02 |
| US20160369200A1 (en) | 2016-12-22 |
| CN105473693A (zh) | 2016-04-06 |
| CN105473693B (zh) | 2019-04-02 |
| EP3037507A4 (fr) | 2017-02-08 |
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