EP3921399A1 - Compressor lubricant composition - Google Patents
Compressor lubricant compositionInfo
- Publication number
- EP3921399A1 EP3921399A1 EP20702132.0A EP20702132A EP3921399A1 EP 3921399 A1 EP3921399 A1 EP 3921399A1 EP 20702132 A EP20702132 A EP 20702132A EP 3921399 A1 EP3921399 A1 EP 3921399A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mass
- lubricating composition
- pag
- refrigerant
- composition according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 129
- 239000000314 lubricant Substances 0.000 title abstract description 11
- 239000003507 refrigerant Substances 0.000 claims abstract description 73
- 229920001515 polyalkylene glycol Polymers 0.000 claims abstract description 53
- FXRLMCRCYDHQFW-UHFFFAOYSA-N 2,3,3,3-tetrafluoropropene Chemical compound FC(=C)C(F)(F)F FXRLMCRCYDHQFW-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000004378 air conditioning Methods 0.000 claims abstract description 34
- 150000001875 compounds Chemical class 0.000 claims abstract description 31
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 31
- 238000007906 compression Methods 0.000 claims abstract description 22
- 230000006835 compression Effects 0.000 claims abstract description 22
- 230000001050 lubricating effect Effects 0.000 claims description 95
- -1 amine phosphate Chemical class 0.000 claims description 31
- 239000012530 fluid Substances 0.000 claims description 28
- 239000007789 gas Substances 0.000 claims description 25
- 125000004432 carbon atom Chemical group C* 0.000 claims description 23
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 22
- 238000012546 transfer Methods 0.000 claims description 19
- 239000005069 Extreme pressure additive Substances 0.000 claims description 18
- 229910019142 PO4 Inorganic materials 0.000 claims description 18
- 239000000654 additive Substances 0.000 claims description 18
- 239000007866 anti-wear additive Substances 0.000 claims description 18
- 239000010452 phosphate Substances 0.000 claims description 13
- 230000001747 exhibiting effect Effects 0.000 claims description 12
- 239000002530 phenolic antioxidant Substances 0.000 claims description 12
- 125000000217 alkyl group Chemical group 0.000 claims description 10
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 claims description 9
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 7
- 229920005606 polypropylene copolymer Polymers 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 125000005842 heteroatom Chemical group 0.000 claims description 6
- 125000006353 oxyethylene group Chemical group 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000000470 constituent Substances 0.000 claims description 3
- 125000003709 fluoroalkyl group Chemical group 0.000 claims description 3
- 125000004429 atom Chemical group 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 abstract description 3
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 3
- 238000005057 refrigeration Methods 0.000 abstract description 3
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 2
- 235000021317 phosphate Nutrition 0.000 description 16
- 239000010687 lubricating oil Substances 0.000 description 13
- 239000002253 acid Substances 0.000 description 11
- 239000003963 antioxidant agent Substances 0.000 description 8
- 239000002199 base oil Substances 0.000 description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 7
- 229920006395 saturated elastomer Polymers 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical class C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 6
- 150000002148 esters Chemical class 0.000 description 6
- 239000013529 heat transfer fluid Substances 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 235000019198 oils Nutrition 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 125000001931 aliphatic group Chemical group 0.000 description 5
- 125000002947 alkylene group Chemical group 0.000 description 5
- 239000002826 coolant Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- 239000003999 initiator Substances 0.000 description 4
- 229920001451 polypropylene glycol Polymers 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- WPMYUUITDBHVQZ-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoic acid Chemical compound CC(C)(C)C1=CC(CCC(O)=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 239000002518 antifoaming agent Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000539 dimer Substances 0.000 description 3
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 239000000463 material Substances 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
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- DMUPYMORYHFFCT-UPHRSURJSA-N (z)-1,2,3,3,3-pentafluoroprop-1-ene Chemical compound F\C=C(/F)C(F)(F)F DMUPYMORYHFFCT-UPHRSURJSA-N 0.000 description 2
- NPNPZTNLOVBDOC-UHFFFAOYSA-N 1,1-difluoroethane Chemical compound CC(F)F NPNPZTNLOVBDOC-UHFFFAOYSA-N 0.000 description 2
- 229940051271 1,1-difluoroethane Drugs 0.000 description 2
- ULQISTXYYBZJSJ-UHFFFAOYSA-N 12-hydroxyoctadecanoic acid Chemical compound CCCCCCC(O)CCCCCCCCCCC(O)=O ULQISTXYYBZJSJ-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- ZWAJLVLEBYIOTI-UHFFFAOYSA-N cyclohexene oxide Chemical compound C1CCCC2OC21 ZWAJLVLEBYIOTI-UHFFFAOYSA-N 0.000 description 2
- FWFSEYBSWVRWGL-UHFFFAOYSA-N cyclohexene oxide Natural products O=C1CCCC=C1 FWFSEYBSWVRWGL-UHFFFAOYSA-N 0.000 description 2
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 150000002334 glycols Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 2
- 150000003014 phosphoric acid esters Chemical class 0.000 description 2
- 229920001281 polyalkylene Polymers 0.000 description 2
- 239000002516 radical scavenger Substances 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- ALSTYHKOOCGGFT-KTKRTIGZSA-N (9Z)-octadecen-1-ol Chemical compound CCCCCCCC\C=C/CCCCCCCCO ALSTYHKOOCGGFT-KTKRTIGZSA-N 0.000 description 1
- 125000004209 (C1-C8) alkyl group Chemical group 0.000 description 1
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- QGLWBTPVKHMVHM-KTKRTIGZSA-N (z)-octadec-9-en-1-amine Chemical compound CCCCCCCC\C=C/CCCCCCCCN QGLWBTPVKHMVHM-KTKRTIGZSA-N 0.000 description 1
- UJPMYEOUBPIPHQ-UHFFFAOYSA-N 1,1,1-trifluoroethane Chemical compound CC(F)(F)F UJPMYEOUBPIPHQ-UHFFFAOYSA-N 0.000 description 1
- WXGNWUVNYMJENI-UHFFFAOYSA-N 1,1,2,2-tetrafluoroethane Chemical compound FC(F)C(F)F WXGNWUVNYMJENI-UHFFFAOYSA-N 0.000 description 1
- NDMMKOCNFSTXRU-UHFFFAOYSA-N 1,1,2,3,3-pentafluoroprop-1-ene Chemical class FC(F)C(F)=C(F)F NDMMKOCNFSTXRU-UHFFFAOYSA-N 0.000 description 1
- WGZYQOSEVSXDNI-UHFFFAOYSA-N 1,1,2-trifluoroethane Chemical compound FCC(F)F WGZYQOSEVSXDNI-UHFFFAOYSA-N 0.000 description 1
- CXBDYQVECUFKRK-UHFFFAOYSA-N 1-methoxybutane Chemical compound CCCCOC CXBDYQVECUFKRK-UHFFFAOYSA-N 0.000 description 1
- 229940114072 12-hydroxystearic acid Drugs 0.000 description 1
- LXWZXEJDKYWBOW-UHFFFAOYSA-N 2,4-ditert-butyl-6-[(3,5-ditert-butyl-2-hydroxyphenyl)methyl]phenol Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC(CC=2C(=C(C=C(C=2)C(C)(C)C)C(C)(C)C)O)=C1O LXWZXEJDKYWBOW-UHFFFAOYSA-N 0.000 description 1
- DKCPKDPYUFEZCP-UHFFFAOYSA-N 2,6-di-tert-butylphenol Chemical compound CC(C)(C)C1=CC=CC(C(C)(C)C)=C1O DKCPKDPYUFEZCP-UHFFFAOYSA-N 0.000 description 1
- JTXMVXSTHSMVQF-UHFFFAOYSA-N 2-acetyloxyethyl acetate Chemical compound CC(=O)OCCOC(C)=O JTXMVXSTHSMVQF-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- FDMFUZHCIRHGRG-UHFFFAOYSA-N 3,3,3-trifluoroprop-1-ene Chemical compound FC(F)(F)C=C FDMFUZHCIRHGRG-UHFFFAOYSA-N 0.000 description 1
- UXKQNCDDHDBAPD-UHFFFAOYSA-N 4-n,4-n-diphenylbenzene-1,4-diamine Chemical compound C1=CC(N)=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 UXKQNCDDHDBAPD-UHFFFAOYSA-N 0.000 description 1
- QAHJJQGHAWTUQU-UHFFFAOYSA-N 5-methyl-2h-triazol-4-amine Chemical compound CC1=NNN=C1N QAHJJQGHAWTUQU-UHFFFAOYSA-N 0.000 description 1
- ZVVFVKJZNVSANF-UHFFFAOYSA-N 6-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]hexyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCCCCCCOC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 ZVVFVKJZNVSANF-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 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 1
- 239000004593 Epoxy Substances 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- REYJJPSVUYRZGE-UHFFFAOYSA-N Octadecylamine Chemical compound CCCCCCCCCCCCCCCCCCN REYJJPSVUYRZGE-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229920001774 Perfluoroether Chemical class 0.000 description 1
- RVGRUAULSDPKGF-UHFFFAOYSA-N Poloxamer Chemical compound C1CO1.CC1CO1 RVGRUAULSDPKGF-UHFFFAOYSA-N 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 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 1
- RXIOGAOEXHQXFG-UHFFFAOYSA-N [2-methyl-4-(oxiran-2-yl)butan-2-yl] benzoate Chemical compound C=1C=CC=CC=1C(=O)OC(C)(C)CCC1CO1 RXIOGAOEXHQXFG-UHFFFAOYSA-N 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- FLAJFZXTYPQIBY-CLFAGFIQSA-N bis[(z)-octadec-9-enyl] hydrogen phosphite Chemical compound CCCCCCCC\C=C/CCCCCCCCOP(O)OCCCCCCCC\C=C/CCCCCCCC FLAJFZXTYPQIBY-CLFAGFIQSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000002144 chemical decomposition reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical class C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 1
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- ILRSCQWREDREME-UHFFFAOYSA-N dodecanamide Chemical compound CCCCCCCCCCCC(N)=O ILRSCQWREDREME-UHFFFAOYSA-N 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 1
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 229940055577 oleyl alcohol Drugs 0.000 description 1
- XMLQWXUVTXCDDL-UHFFFAOYSA-N oleyl alcohol Natural products CCCCCCC=CCCCCCCCCCCO XMLQWXUVTXCDDL-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- QQWAKSKPSOFJFF-UHFFFAOYSA-N oxiran-2-ylmethyl 2,2-dimethyloctanoate Chemical compound CCCCCCC(C)(C)C(=O)OCC1CO1 QQWAKSKPSOFJFF-UHFFFAOYSA-N 0.000 description 1
- XRQKARZTFMEBBY-UHFFFAOYSA-N oxiran-2-ylmethyl benzoate Chemical compound C=1C=CC=CC=1C(=O)OCC1CO1 XRQKARZTFMEBBY-UHFFFAOYSA-N 0.000 description 1
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 1
- 125000005702 oxyalkylene group Chemical group 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical group 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- WBHHMMIMDMUBKC-XLNAKTSKSA-N ricinelaidic acid Chemical compound CCCCCC[C@@H](O)C\C=C\CCCCCCCC(O)=O WBHHMMIMDMUBKC-XLNAKTSKSA-N 0.000 description 1
- 229960003656 ricinoleic acid Drugs 0.000 description 1
- FEUQNCSVHBHROZ-UHFFFAOYSA-N ricinoleic acid Natural products CCCCCCC(O[Si](C)(C)C)CC=CCCCCCCCC(=O)OC FEUQNCSVHBHROZ-UHFFFAOYSA-N 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 150000003558 thiocarbamic acid derivatives Chemical class 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- WGKLOLBTFWFKOD-UHFFFAOYSA-N tris(2-nonylphenyl) phosphite Chemical compound CCCCCCCCCC1=CC=CC=C1OP(OC=1C(=CC=CC=1)CCCCCCCCC)OC1=CC=CC=C1CCCCCCCCC WGKLOLBTFWFKOD-UHFFFAOYSA-N 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- UIYCHXAGWOYNNA-UHFFFAOYSA-N vinyl sulfide Chemical group C=CSC=C UIYCHXAGWOYNNA-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/008—Lubricant compositions compatible with refrigerants
-
- 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
-
- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/1033—Polyethers, i.e. containing di- or higher polyoxyalkylene groups 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
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
- C10M2209/1045—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only 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
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
- C10M2209/1055—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only 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
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/107—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of two or more specified different alkylene oxides covered by groups C10M2209/104 - C10M2209/106
-
- 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
- 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
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/09—Characteristics associated with water
- C10N2020/097—Refrigerants
- C10N2020/101—Containing Hydrofluorocarbons
-
- 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
-
- 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
- C10N2040/30—Refrigerators lubricants or compressors lubricants
Definitions
- the present invention relates to a lubricating composition, intended for refrigerant systems comprising a gas compression circuit, and more particularly for compressors of automotive air conditioning systems, which operate in the presence of hydrofluorocarbon refrigerants, in particular based on 1, 1, 1,2-tetrafluoroethane (RI 34a) and / or 2,3,3,3-tetrafluoropropene (HFO-1234yf).
- RI 34a 1, 1, 1, 1,2-tetrafluoroethane
- HFO-1234yf 2,3,3,3-tetrafluoropropene
- Such an air conditioning device is based on a thermodynamic cycle comprising the vaporization of the refrigerant at low pressure (in which the fluid absorbs heat); compressing the vaporized fluid to high pressure, condensing the vaporized fluid into a liquid at high pressure (in which the fluid rejects heat), and expanding the fluid to complete the cycle.
- chlorinated compounds for example of the chlorofluorocarbons and hydrochlorofluorocarbons type, which have the disadvantage of damaging the ozone layer, have been gradually replaced by non-chlorinated compounds such as hydrofluorocarbons, fluoroethers and fluoroolefins.
- the refrigerant most commonly used at present in automotive air conditioning systems is 1, 1,1,2-tetrafluoroethane, referred to as “R134a”. More recently, a new refrigerant, exhibiting a reduced global warming potential (GWP), 2,3,3,3-tetrafluoropropene, referred to as “HFO-1234yf”, has been developed, and is now recommended in Europe. due to its low GWP and its good energy performance.
- a lubricating oil must be added at the level of the automobile air conditioning device, in particular at the level of the compressor.
- the oil can generally be mineral or synthetic.
- the lubricating oil used in the automotive air conditioning compressor is brought into contact with the refrigerant gas, which imposes constraints on miscibility, compatibility and chemical stability of the refrigerant with the lubricating oil.
- the lubricating oil must be chosen so as not to react with the refrigerant or to negatively impact the properties of the latter.
- the lubricating oil is compatible with the refrigerant used.
- it must be chemically and thermally stable in the presence of the refrigerant.
- the refrigerant fluid exhibits good properties of miscibility with the lubricating oil, in other words that the mixture of the refrigerant fluid with the lubricating oil does not undergo phase separation during its use at the level of the lubricant.
- air conditioning system i.e. over a wide temperature range, preferably from -10 ° C, in particular from -20 ° C, up to 10 ° C, preferably up to 30 ° vs.
- refrigerant fluids based on hydrofluorocarbon compounds such as R134a and / or HFO-1234yf, exhibit miscibility with lubricating oils, usually used in air conditioning systems, which is often imperfect.
- a lubricating oil which exhibits good properties in terms of chemical and thermal stability, compatibility and miscibility with refrigerant fluids based on hydrofluorocarbon compound (s), in particular with R134a and / or HFO-1234yf.
- document EP 2 161 323 in the name of IDEMITSU proposes for example lubricating formulations, compatible with unsaturated fluorinated hydrocarbon refrigerant fluids, such as 1,2,3,3,3-pentafluoropropene, based on polyoxyalkylenes glycols whose two hydroxyl ends are capped (“double end capped” in English terminology), exhibiting a hydroxyl number less than or equal to 5 mgKOH / g.
- polyoxyalkylene glycols are more particularly chosen from polypropylene glycol dimethyl ether, polyethylene-polypropylene glycol dimethyl ether, polyethylene-polypropylene glycol methyl butyl ether and polypropylene glycol diacetate.
- the present invention aims specifically to provide a novel lubricating composition, intended for a heat transfer system by gas compression, in particular for an air conditioning compressor, using a refrigerant based on fluorocarbon compound (s), in particular of the R134a and / or HFO-1234yf type.
- gas compression in particular for an air conditioning compressor
- refrigerant based on fluorocarbon compound (s) in particular of the R134a and / or HFO-1234yf type.
- a lubricating composition meeting the aforementioned requirements for lubricants for refrigeration systems, by using, as base oil, a mixture of at least two specific polyalkylene glycols.
- the present invention relates, according to a first of its aspects, to a lubricating composition, intended for a refrigerant system comprising a gas compression circuit, in particular for a compressor of an automobile air conditioning system, comprising:
- PAG A at least a first polyalkylene glycol, denoted PAG A, exhibiting a hydroxyl number strictly greater than 50 mgKOH / g and a kinematic viscosity measured at 100 ° C according to the ASTM D445 standard, ranging from 5 to 10 mm 2 / s;
- polyalkylene glycols A and B being present in a PAG (s) A / PAG (s) B mass ratio of between 60/40 and 99/1.
- the invention also relates, according to another of its aspects, to the use of a lubricating composition, as defined above, in a refrigerant system comprising a gas compression circuit, in particular in a compressor of an air conditioning system.
- a refrigerant system comprising a gas compression circuit, in particular in a compressor of an air conditioning system.
- automotive in association with a refrigerant based on hydrofluorocarbon compounds, in particular with a refrigerant based on RI 34a and / or HFO-1234yf.
- a lubricating composition according to the invention may further comprise one or more additives, in particular chosen from antiwear and extreme pressure additives, antioxidants, lubricating agents, acid scavengers and anti-foaming agents.
- a lubricating composition according to the invention further comprises at least one phenolic antioxidant additive.
- a lubricating composition according to the invention further comprises at least one antiwear additive of amine phosphate type.
- the hydroxyl number represents the amount of potassium hydroxide in mg corresponding to the number of hydroxyl groups present in 1 g of material.
- the hydroxyl number is representative of the functionalization or not of the hydroxyl ends of the polyalkylene glycol used.
- the polyalkylene glycols of PAG A type used according to the invention exhibiting a hydroxyl number strictly greater than 50 mgKOH / g, are typically polyalkylene glycols having a single capped hydroxyl end, more generally designated under the name "single end capped" in Anglo-Saxon terminology.
- the polyalkylene glycols A according to the invention have at least one free hydroxyl end.
- polyalkylene glycols of the “single end capped” type as the majority base oil in a lubricating formulation intended for a refrigerant system was by no means obvious.
- the polyalkylene glycols exhibiting the two capped ends in other words not exhibiting a free hydroxyl function (“double end capped” in English terminology) are usually preferred to “single end capped” polyalkylene glycols, because of their thermal stability.
- a lubricating composition according to the invention comprising a base oil formed mainly from the mixture of the two polyalkylene glycols A and B as defined above, has excellent miscibility with a coolant based on transfer compounds.
- hydrofluorocarbon heaters in particular with a refrigerant based on R134a and / or HFO-1234yf over a wide temperature range.
- a lubricating composition according to the invention advantageously exhibits excellent properties in terms of thermal and chemical stability, in the presence of a refrigerant based on hydrofluorocarbon compounds, in particular based on R134a and / or HFO-1234yf.
- a lubricating formula according to the invention exhibiting good thermal stability and good miscibility with refrigerants based on R134a and / or HFO-1234yf, makes it possible to proceed with the replacement of the refrigerant fluids used up to now in automotive air conditioning systems, such as 1, 1- difluoroethane, without impacting the lubrication of compressor parts and the efficiency of the refrigerant system.
- the lubricating formulation according to the invention in which the first polyalkylene glycols, PAG A, constitute the oil of majority basis, proves particularly advantageous in terms of cost price.
- the lubricating composition according to the invention exhibits satisfactory tribological properties and particularly suitable for its use for lubricating a compressor of an automobile air conditioning system.
- the lubricating composition according to the invention exhibits good lubricating power, a low pour point, good fluidity at low temperature.
- kinematic viscosity measured at 40 ° C (KV40), according to the ASTM D445 (ISO 3104) standard, of between 30 and 60 mm 2 / s, in particular between 30 and 55 mm 2 / s and more particularly between 40 and 50 mm 2 / s.
- the invention also relates, according to another of its aspects, to a heat transfer composition, for a refrigerant system comprising a gas compression circuit, in particular for an automotive air conditioning system, comprising:
- a refrigerating fluid based on orocarbon hydrofluoric compounds in particular based on 1, 1,1,2-tetrafluoroethane (R134a) and / or 2,3,3,3-tetrafluoropropene (HFO-1234yf).
- R134a 1, 1,1,2-tetrafluoroethane
- HFO-1234yf 2,3,3,3-tetrafluoropropene
- the refrigerant under consideration according to the invention may consist of R134a, HFO-1234yf or a mixture of R134a and HFO-1234yf.
- heat transfer compound respectively "heat transfer fluid”, also called “refrigerant fluid” or “refrigerant” is meant a compound, respectively a fluid, capable of absorbing heat in s' evaporating at low temperature and low pressure, and rejecting heat by condensing at high temperature and high pressure, in a gas compression circuit.
- a heat transfer fluid can include one, two, three or more heat transfer compounds.
- the refrigerant comprises only R134a as heat transfer compound.
- the refrigerant comprises only HFO-1234yf as a heat transfer compound.
- the invention is a mixture of RI 34a and HFO-1234yf.
- the invention also relates to the use of a heat transfer composition as defined above in a refrigerant system comprising a gas compression circuit, in particular for an automobile air conditioning system.
- refrigerant system comprising a gas compression circuit, in particular an automobile air conditioning system, comprising a heat transfer composition as defined above.
- the invention also relates to a kit intended to be implemented for a refrigerant system comprising a gas compression circuit, comprising:
- a refrigerating fluid based on hydrofluorocarbon compounds in particular based on 1,1,1,2-tetrafluoroethane (R134a) and / or 2,3,3,3-tetrafluoropropene (HFO-1234yf).
- R134a 1,1,1,2-tetrafluoroethane
- HFO-1234yf 2,3,3,3-tetrafluoropropene
- the kit may be more particularly intended for an automobile air conditioning installation.
- a lubricating composition according to the invention intended for a refrigerant system, in particular for an automobile air conditioning system, comprises a base oil formed mainly from a mixture of at least two distinct polyalkylene glycols, denoted PAG A and PAG B, in particular as defined below.
- PAG A and PAG B in particular as defined below.
- PAG A denotes the polyalkylene glycol (s) used in a lubricating composition according to the invention, meeting the criteria defined above for the first polyalkylene glycol according to the invention.
- PAG A is meant in particular a single PAG A or a mixture of two or more PAG A.
- the PAG A according to the invention exhibits an hydroxyl number strictly greater than 50 mgKOH / g, in particular ranging from 52 to 75 mgKOH / g and more particularly from 55 to 70 mgKOH / g.
- the hydroxyl number can be measured according to ASTM El 899-08.
- the PAG A according to the invention is more particularly a polyalkylene glycol exhibiting only one of its hydroxyl ends capped by a group ("single end capped" in English terminology). In other words, it has at least one free hydroxyl end.
- PAG A according to the invention is thus distinguished from polyalkylene glycols, called “double end capped", having the two capped hydroxyl ends.
- the hydroxyl group may for example be capped with an alkyl group containing from 1 to 10 carbon atoms, in particular from 1 to 5 carbon atoms, optionally comprising one or more heteroatoms, such as nitrogen atoms, or alternatively with a fluoroalkyl group optionally containing heteroatoms such as nitrogen.
- the terminal hydroxyl group can also be capped by forming an ester with a carboxylic acid.
- the carboxylic acid can also be fluorinated.
- the terminal group of a PAG A according to the invention is chosen from alkyl groups having between 1 and 5 carbon atoms, preferably between 1 and 4 carbon atoms, such as a methyl or butyl group.
- the PAG A used according to the invention has a kinematic viscosity measured at 100 ° C. (KV100), measured according to the ASTM D445 standard, ranging from 5 to 10 mm 2 / s.
- KV100 kinematic viscosity measured at 100 ° C. according to the ASTM D445 standard, of between 6 and 9 mm 2 / s.
- the PAG A according to the invention can be formed from oxyalkylene units each containing 1 to 8 carbon atoms, preferably 2 to 4 carbon atoms. It can be a homopolymer or a copolymer of 2, 3 or more than 3 groups selected from oxyethylene, oxypropylene, oxybutylene, oxypentylene groups and combinations thereof.
- the PAG A comprises at least oxypropylene units.
- PO oxypropylene
- PAG A is a copolymer of propylene oxide and ethylene oxide.
- It is preferably a copolymer of propylene oxide and ethylene oxide, exhibiting a weight ratio of oxypropylene (OP) units / oxyethylene (EO) units greater than or equal to 1: 1, in particular between 2: 1 and 10: 1.
- OP oxypropylene
- EO oxyethylene
- the PAG A used according to the invention can be prepared by polymerization or copolymerization of alkylene oxides comprising from 1 to 8 carbon atoms, in particular from 2 to 4 carbon atoms.
- the synthesis of a PAG A according to the invention more particularly uses an initiator of monovalent alcohol type having from 1 to 10 carbon atoms, in particular methanol or butanol, in order to obtain a polyoxyalkylene glycol having an ether group at one of its ends and a free hydroxyl end.
- a person skilled in the art is able to adjust the operating conditions for the synthesis of polyalkylene glycol, in order to obtain the desired "single end capped" PAG, in particular having an hydroxyl number as defined above.
- a PAG A according to the invention has a molecular mass by weight ranging from 300 to 2000 g / mol, in particular between 800 and 1500 g / mol.
- the molecular mass by weight can be measured by Gel Permeation Chromatography (GPC).
- the flash point of PAG A is preferably greater than or equal to 160 ° C, in particular greater than or equal to 190 ° C.
- the flash point can be measured by ISO 2592.
- the PAG A used to form a lubricating composition according to the invention has a water content of less than or equal to 700 ppm by weight.
- PAG A satisfying the above criteria and can be implemented in a lubricating composition according to the invention may be commercially available, for example the oils sold under the references Konlube ® RF 240 YF, Konlube ® RF 232 and YF Géolube ® PAG A 01930.
- the oil marketed under the Konlube ® RF 232 YF reference is particularly suitable.
- the polyalkylene glycol (s) A can be used in an amount of 60% to 99% by mass, relative to the total mass of the lubricating composition, in particular from 70 to 99% by mass and more preferably from 80 to 98% by weight, even more preferably from 85 to 95% by weight.
- the polyalkylene glycol (s) A according to the invention preferably represent more than 70% by mass, in particular more than 75% by mass, of the total mass of the base oils present in the lubricating composition according to the invention.
- polyalkylene glycol (s) A under the name “PAG B” is meant one or more polyalkylene glycols used in a lubricating composition according to the invention, meeting the criteria defined above for the second polyalkylene glycol according to invention.
- the PAG B used according to the invention differs from a PAG A as described above, in particular in that it has a higher kinematic viscosity KV100 than that of a PAG A.
- PAG B has a kinematic viscosity measured at 100 ° C. (KV100), according to the ASTM D445 standard, greater than or equal to 100 mm 2 / s and less than or equal to 500 mm 2 / s.
- the kinematic viscosity KV100 of a PAG B implemented according to the invention is between 120 and 300 mm 2 / s, and more particularly between 140 and 200 mm 2 / s, or even between 150 and 190 mm 2 / s.
- the PAG B used according to the invention is more particularly obtained by polymerization or copolymerization of alkylene oxides comprising from 1 to 8 carbon atoms, in particular from 2 to 4 carbon atoms.
- the PAG B comprises 50% or less than 50% by weight of oxypropylene units.
- it is a copolymer of propylene oxide and of ethylene oxide, in particular formed of at least 50% by weight of oxyethylene units, and more particularly having a ratio by weight of oxypropylene units (PO ) / oxy ethylene (EO) units ranging from 2: 8 to 1: 1, especially from 4: 6 to 1: 1.
- PO oxypropylene units
- EO oxyethylene
- the PAG B can have a single (“single end capped” in English terminology) or two (“double end capped” in English terminology) capped hydroxyl ends.
- the hydroxyl group can be capped with an alkyl group containing from 1 to 10 carbon atoms, optionally comprising one or more heteroatoms, such as nitrogen atoms, a fluoroalkyl group containing heteroatoms, such as nitrogen .
- the PAG B is a “double end capped” polyalkylene glycol.
- the same extremal group or a combination of two distinct groups can be used.
- PAG B can be synthesized according to methods known to those skilled in the art. Preferably, it can be obtained by polymerization from an initiator of the diol or other type. Preferably, a PAG B according to the invention has a molecular mass by weight M w greater than or equal to 4000 g / mol, in particular greater than or equal to 5000 g / mol and more particularly between 5000 and 15000 g / mol.
- the flash point of PAG B is preferably greater than or equal to 200 ° C.
- PAG B satisfying the aforementioned criteria and which can be used in a lubricating composition according to the invention, can be commercially available.
- These include for example the oils sold under the references SYNALOX ® 40D700, Breox ® 50A1000, Breox ® 60W1000, Emkarox ® VG 1050W.
- the oil marketed under the reference Synalox ® 40D700 is particularly suitable.
- the polyalkylene glycol (s) B can be used in an amount of 1% to 30% by mass, relative to the total mass of the lubricating composition, in particular from 1 to 15% by mass and more preferably from 3 to 10% en masse.
- Polyalkylenes A and B exhibit excellent properties of miscibility with each other.
- the polyalkylene glycols A and B are used in a lubricating composition according to the invention in a PAG A / PAG B mass ratio ranging from 60/10 to 99/1, in particular from 70/30 to 98/2 and more preferably from 85/15 to 95/5.
- the lubricating composition according to the invention may optionally comprise one or more additional base oils, in minor amounts compared to PAG A and B.
- the mixture of polyalkylene glycols A and B represents more than 95% by mass, in particular more than 98% by mass, of the total mass of the base oils of a lubricating composition.
- a lubricating composition according to the invention is free from base oil other than said polyalkylene glycols A and B according to the invention.
- the mixture of said polyalkylene glycols A and B represents more than 70% by mass, in particular more than 80% by mass, in particular more than 90% and in particular more than 95% by mass, of the total mass of the lubricating composition according to the invention.
- a lubricating composition used according to the invention may comprise, in addition to said polyalkylene glycols A and B according to the invention, one or more additives.
- the additives can be chosen in particular from antiwear and extreme pressure additives, lubricating agents, antioxidants, acid scavengers and anti-foaming agents.
- a lubricating composition according to the invention comprises at least one anti-wear or extreme pressure additive.
- phosphorus-based agents such as phosphates, phosphoric acids, phosphites, acid phosphites and their amine salts.
- phosphate esters such as tricresyl phosphate, trithiophenyl phosphate, tris (nonylphenyl) phosphite, dioleylhydrogen phosphite, phosphite of 2 -ethylhexyldiphenyl, etc.
- the extreme pressure additives can also be metal salts of carboxylic acids, in particular metal salts of carboxylic acids having from 3 to 60 carbon atoms, in particular from 3 to 30 carbon atoms and more particularly from 12 to 30 atoms. of carbon. They can also be metal salts of dimers and trimers of aliphatic acids, and dicarboxylic acids having 3 to 30 carbon atoms.
- the metal salt can more particularly be an alkali metal or alkaline earth metal salt, in particular an alkali metal salt.
- extreme pressure additives can also be envisaged, such as extreme pressure additives based on sulfur, such as, for example, sulphurous fats, sulphurous aliphatic acids, sulphurous esters, sulphurous olefins, dihydrocarvyl polysulphides, thiocarbamates, thioterpenes and dialkyl thiodipropionates.
- the antiwear / extreme pressure additive is a phosphate additive.
- the lubricating composition according to the invention comprises at least one antiwear / extreme pressure additive chosen from amine phosphates.
- the amine phosphates can more particularly be C10 to C18 alkyl amine phosphates of the formula:
- R 1 is C1-C8 alkyl and R 2 is C10-C18 alkyl.
- Such amine phosphates are for example marketed under the reference VANLUB 672 ® by Vanderbilt or Irgalube ® 349 by BASF Corporation.
- an anti-wear additive of amine phosphate type makes it possible, compared to other anti-wear / extreme-pressure phosphorus additives such as phosphate esters, to significantly improve the thermal stability of the lubricating composition in the presence of the coolant used at a temperature of the order of 175 ° C.
- the anti-wear and extreme pressure additive (s), preferably of amine phosphate type can be used in an amount of 0.001 to 3% by mass, relative to the total mass of the composition, preferably from 0.005 to 1% by weight and more particularly from 0.05 to 0.5% by weight.
- Antioxidant additives preferably of amine phosphate type
- the lubricating composition according to the invention comprises at least one antioxidant additive.
- Antioxidant additives can be, for example, phenolic antioxidant additives or amine-based antioxidant additives, such as phenyl-a-napthylamine or N, N-diphenyl-p-phenylenediamine.
- the lubricating composition comprises at least one phenolic antioxidant additive.
- the phenolic antioxidants can be more particularly chosen from 2,6-di-tert-butylphenol (as sold under the reference Irganox® 140 by Ciba-Geigy Corporation), 2,2'-methylene-bis- (4,6 -di-tert-butylphenol), 1,6-hexamethylene-bis (3,5-di-tert-butyl-4-hydroxyhydrocinnamate) (as marketed under the reference Irganox ® L109 by Ciba-Geigy Corporation), esters C10 -Ci4 isoalkyl and acid
- the phenolic antioxidants are chosen from esters of C7 to C9 alkyl and 3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid, for example commercially available under the reference Irganox® L135 from Ciba- Geigy Corporation.
- a lubricating composition according to the invention may comprise the said antioxidant additive (s), preferably of the phenolic type, in an amount of 0.01 to 5% by weight, relative to the total weight of said composition, preferably from 0.05 to 3. % by mass and more particularly from 0.1 to 1% by mass.
- a lubricating composition according to the invention thus comprises, in addition to said polyalkylene glycols A and B, in particular as described above:
- At least one phenolic antioxidant in particular of the C7 to C9 alkyl ester type and of 3, 5 -di -tert-buty 1 -4 -hy droxy hy drocinnami c.
- the inventors have observed that the combined presence of at least one antiwear / extreme pressure additive of amine phosphate type and of at least one phenolic antioxidant, in addition to the combination of polyalkylene glycols A and B according to the invention makes it possible to optimize the thermal stability of the lubricating composition according to the invention.
- Such a composition advantageously exhibits a stable viscosity and an absence of chemical degradation (oxidation) at high temperatures of the order of 175 ° C.
- the lubricating composition according to the invention comprises, or even consists of:
- the lubricating composition according to the invention comprises, or even consists of:
- the sum of the constituents being equal to 100%, and the percentages being expressed relative to the total mass of the lubricating composition.
- Other additives may optionally be present in the lubricating composition according to the invention.
- lubricity additives or lubricity additives such as for example chosen from saturated and unsaturated aliphatic monocarboxylic acids such as stearic acid and oleic acid, polymerized aliphatic acids such as acids dimers and hydrogenated dimer acids, hydroxyaliphatic acids such as ricinoleic acid and 12-hydroxy stearic acid, saturated and unsaturated aliphatic monohydric alcohols such as lauryl alcohol and oleyl alcohol; saturated and unsaturated aliphatic monoamines such as stearylamine and oleylamine; saturated and unsaturated aliphatic monocarboxylic acid amides such as lauric acid amide and oleic acid amide, and polyhydric alcohol partial esters such as glycerin and sorbitol, and saturated aliphatic monocarboxylic acids or unsaturated.
- saturated and unsaturated aliphatic monocarboxylic acids such as stearic acid and oleic acid
- the lubricity additive (s) or lubricity additives may be present in an amount of 0.01 to 10% by mass, in particular from 0.1 to 5% by mass relative to the total mass of said composition.
- a lubricating composition according to the invention may also comprise one or more “acid scavenger” compounds, such as, for example, chosen from glycidyl and phenyl ethers, alkyl and glycidyl ethers, alkylene glycol glycidyl ether, phenyl and glycidyl esters, alkenyl and glycidyl esters, cyclohexene oxide, Ga-olefinoxide and epoxy compounds such as epoxidized soybean oil.
- “acid scavenger” compounds such as, for example, chosen from glycidyl and phenyl ethers, alkyl and glycidyl ethers, alkylene glycol glycidyl ether, phenyl and glycidyl esters, alkenyl and glycidyl esters, cyclohexene oxide, Ga-olefinoxide and epoxy compounds such as epoxid
- the “acid scavenger” additives can be chosen from phenyl and glycidyl ethers, alkyl and glycidyl ethers, alkylene glycol and glycidyl ethers, glycidyl-2,2-dimethyloctanoate. , glycidyl benzoate, glycidyl-tert-butyl benzoate, glycidyl acrylate, glycidyl methacrylate, cyclohexene oxide, and Ga-olefinoxide.
- Each of the alkyl groups of the alkyl glycidyl ether and the alkylene group of an alkylene glycol glycidyl ether may be branched, and present typically from 3 to 30 carbon atoms, preferably from 4 to 24 and more particularly from 6 to 16 carbon atoms.
- Ga-olefmoxide it may have more particularly from 4 to 50 carbon atoms, in particular from 4 to 24 and more particularly from 6 to 16 carbon atoms.
- Said compound (s) "acid scavengers” may be present in an amount of 0.005 to 5% by weight, in particular from 0.05 to 3% by weight, relative to the total weight of said lubricating composition.
- a lubricating composition according to the invention can also comprise one or more anti-foam additives, such as, for example, a silicone oil, or a fluorinated silicone oil.
- one or more anti-foam additives such as, for example, a silicone oil, or a fluorinated silicone oil.
- additives known to those skilled in the art may also be present in a lubricating composition according to the invention, for example copper deactivators such as N- [N, N-dialkyl aminomethyl triazole.
- a lubricating composition according to the invention has a kinematic viscosity, measured at 40 ° C (KV40), according to the standard ASTM D445 (ISO 3104) of between 30 and 60 mm 2 / s, in particular between 35 and 60 mm 2 / s and more particularly between 40 and 50 mm 2 / s.
- KV40 kinematic viscosity
- the kinematic viscosity, measured at 100 ° C (KV100), according to standard ASTM D445 (ISO 3104), of a lubricating composition according to the invention can advantageously be between 5 and 10 mm 2 / s, in particular between 8 and 10 mm 2 / s.
- a lubricating composition according to the invention has an hydroxyl number strictly greater than 40 mg KOH / g, in particular between 45 and 70 mgKOH / g.
- It preferably has an acid number, measured according to the ISO 6618 standard, of between 0.02 mgKOH / g and 0.2 mgKOH / g, preferably less than 0.1 mgKOH / g.
- the water content of the lubricating composition according to the invention is strictly less than 700 ppm by weight.
- a lubricating composition according to the invention proves to be particularly suitable for its use in combination with a refrigerating fluid, in a refrigerating system, in particular in an automobile air conditioning system.
- the invention thus relates, according to another of its aspects, to a heat transfer composition, for a refrigerant system comprising a gas compression circuit, in particular for an automotive air conditioning system, comprising:
- a refrigerating fluid based on orocarbon hydrofluoric compounds in particular based on 1, 1,1,2-tetrafluoroethane (R134a) and / or 2,3,3,3-tetrafluoropropene (HFO-1234yf).
- R134a 1, 1,1,2-tetrafluoroethane
- HFO-1234yf 2,3,3,3-tetrafluoropropene
- the proportion of lubricating composition to be used in combination with the coolant depends on the type of installation concerned. Indeed, the total amount of lubricating oil in the installation depends mainly on the nature of the compressor, while the total amount of refrigerant in the installation mainly depends on the exchangers and the piping.
- the proportion of coolant relative to the lubricating composition is between 99/1 and 1/99, in particular between 95/5 and 5/95.
- the refrigerant fluid is more particularly based on heat transfer compounds chosen from saturated or unsaturated hydrofluorocarbon compounds, and mixtures thereof.
- the refrigerant can be binary (consisting of two heat transfer compounds) or ternary (consisting of three heat transfer compounds) or quaternary (consisting of four heat transfer compounds.
- Hydrofluorocarbon compounds generally correspond to the following formula (A):
- p represents an integer between 2 and 6
- r represents an integer between 1 and 12
- s represents an integer between 0 and 11.
- the unsaturated hydrofluorocarbon compounds can be more particularly chosen from isomers of pentafluoropropene, in particular 3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene, 1,2,3,3,3-pentafluoropropene and 2, 3,3,3-tetrafluoropropene.
- the refrigerant fluid comprises, or even is formed, 2,3,3,3-tetrafluoropropene (HFO-1234yf).
- the saturated hydrofluorocarbon compounds can be more particularly chosen from fluorinated alkane compounds comprising from 1 to 4 carbon atoms, preferably methane or ethane, such as trifluoromethane, difluoromethane, 1, 1-difluoroethane, 1,1,1-trifluoroethane, 1, 1,2-trifluoroethane, 1,1, 1,2-tetrafluoroethane, 1, 1,2,2-tetrafluoroethane and 1, 1,1,2,2, -pentafluoroethane.
- fluorinated alkane compounds comprising from 1 to 4 carbon atoms, preferably methane or ethane, such as trifluoromethane, difluoromethane, 1, 1-difluoroethane, 1,1,1-trifluoroethane, 1, 1,2-trifluoroethane, 1,1, 1,2-tetrafluoroethane, 1, 1,2,2-tetrafluoroethane and 1, 1,1,2,2,
- the refrigerant fluid comprises, or even is formed, 1,1, 1,2-tetrafluoroethane (RI 34a).
- the refrigerant under consideration according to the invention may also comprise one or more additional heat transfer compounds, for example chosen from hydrocarbons, hydrofluorocarbons, ethers, hydrofluoroethers and fluoro-oolfins.
- the refrigerant fluid is formed at more than 90% by mass, in particular at more than 95% by mass and more particularly at more than 99% by mass, of saturated and / or unsaturated hydrofluorocarbon compounds, in particular such as previously defined.
- the refrigerant fluid is based on 1,1,2-tetrafluoroethane (R134a), 2,3,3,3-tetrafluoropropene (HFO-1234yf) or a mixture of R134a and HFO-1234yf.
- R134a 1,1,2-tetrafluoroethane
- HFO-1234yf 2,3,3,3-tetrafluoropropene
- the refrigerant fluid is based on 1,1,2-tetrafluoroethane (R134a), 2,3,3,3-tetrafluoropropene (HFO-1234yf) or a mixture of R134a and HFO-1234yf.
- the refrigerant fluid considered according to the invention can consist of R134a, HFO-1234yf or a mixture of R134a and HFO-1234yf.
- a lubricating composition according to the invention is more particularly intended to be used, with a refrigerant based on R134a and / or HFO-1234yf, in an installation comprising a vapor compression circuit.
- the vapor compression circuit comprises at least one evaporator, one compressor, one condenser and one expansion valve, as well as fluid transport lines between these elements.
- the evaporator and the condenser include a heat exchanger allowing heat exchange between the heat transfer fluid and another fluid or body.
- the vapor compression circuit operates according to a conventional gas compression cycle.
- the cycle involves changing the state of the heat transfer fluid from a liquid (or two-phase liquid / gas) phase to a gas phase at a relatively low pressure, then compressing the gas phase fluid to a relatively low pressure. high, the change of state (condensation) of the heat transfer fluid from the gas phase to the liquid phase at a relatively high pressure, and the reduction in pressure to restart the cycle.
- the lubricating composition according to the invention is intended for an air conditioning device, and more particularly for an automobile air conditioning device.
- an automobile air conditioning compressor in particular for an oscillating plate compressor or an electric scroll compressor.
- the invention relates to a compressor of an automotive air conditioning system using a lubricating composition according to the invention.
- the compressor can be driven by an electric or thermal motor or by a gas turbine (for example, powered by vehicle exhaust gases), or by gears.
- Example 1 Preparation of a lubricating composition according to the invention
- a lubricating composition in accordance with the invention was prepared by simple mixing, at room temperature, of the following components, in the proportions by weight indicated in Table 1 below.
- the antioxidant is a phenolic compound.
- the antiwear / extreme pressure agent is an amine phosphate.
- polyalkylene glycol used in the context of the present examples are:
- PAG A (1) and PAG A (2) polyalkylene glycols formed from at least 96% by mass of oxypropylene units; whose ends are uncapped, and synthesized from the initiator methanol, for example, under the reference Konlube ® RF 240 YF.
- PAG B random copolymer of ethylene oxide (60% by mass) and propylene oxide (40 mass%), synthesized from a diol-type initiator, for example sold under the reference SYNALOX 40D700 ®.
- compositions and the amounts are indicated in Table 3 below.
- thermal stability tests are performed according to ASHRAE 97-2007: “Sealed Glass Tube Method to Test the Chemical Stability of Materials for use within Refrigerant Systems”.
- the lubricant / refrigerant systems HFO-1234yf (mass ratio 1: 1), and metal coupons (Al, Cu and Fe (steel)) as catalyst materials are introduced into glass tubes.
- the tubes are closed and placed in a stainless steel autoclave at 175 ° C for 336 hours.
- the target pressure at 175 ° C is 35 bar.
- Lubricants are tested as is (“1) Aging without water”), and adding water to reach 2000 ppm of water ("2) Aging with 2000 ppm of water”).
- the viscosity of the lubricant is determined, before and after aging, according to DIN 51562-1 using a Ubbelohde viscometer. The variation in viscosity for each of the lubricating compositions tested is reported in Table 4 below.
- the lubricating composition according to the invention combining a PAG A and a PAG B according to the invention, thus exhibits properties in terms of improved thermal stability, compared to the commercial composition C1 not comprising PAG B.
Abstract
The present invention relates to a lubricant composition intended for a refrigeration system comprising a gas compression circuit, comprising: - at least a first polyalkylene glycol having a hydroxyl number strictly greater than 50 mgKOH/g and a kinematic viscosity, measured at 100°C according to standard ASTM D445, ranging from 5 to 10 mm²/s; and - at least a second polyalkylene glycol having a kinematic viscosity, measured at 100 °C, ranging from 100 to 500 mm²/s, wherein said polyalkylene glycols A and B are present in a PAG(s) A/PAG(s) B weight ratio of between 60/40 and 99/1. It also relates to the use of such a lubricant composition in a refrigeration system comprising a gas compression circuit, in particular for a motor vehicle air-conditioning system, in combination with a refrigerant based on hydrocarbon-based compounds, such as R134a and/or HFO-1234yf.
Description
COMPOSITION LUBRIFIANTE POUR COMPRESSEUR LUBRICANT COMPOSITION FOR COMPRESSOR
Domaine technique Technical area
La présente invention se rapporte à une composition lubrifiante, destinée à des systèmes réfrigérants comprenant un circuit de compression de gaz, et plus particulièrement à des compresseurs de systèmes de climatisation automobiles, qui opèrent en présence de réfrigérants hydrofluorocarbonés, en particulier à base de 1, 1, 1,2-tétrafluoroéthane (RI 34a) et/ou de 2,3,3,3-tétrafluoropropène (HFO-1234yf). The present invention relates to a lubricating composition, intended for refrigerant systems comprising a gas compression circuit, and more particularly for compressors of automotive air conditioning systems, which operate in the presence of hydrofluorocarbon refrigerants, in particular based on 1, 1, 1,2-tetrafluoroethane (RI 34a) and / or 2,3,3,3-tetrafluoropropene (HFO-1234yf).
Technique antérieure Prior art
D’une manière générale, un système de climatisation destiné à refroidir l’habitacle d’un véhicule automobile comprend un évaporateur, un compresseur, un condenseur, un détenteur et un fluide de transfert de chaleur, dit fluide frigorigène ou réfrigérant. In general, an air conditioning system intended to cool the passenger compartment of a motor vehicle comprises an evaporator, a compressor, a condenser, a holder and a heat transfer fluid, called a refrigerant or coolant.
Un tel dispositif de climatisation repose sur un cycle thermodynamique comprenant la vaporisation du fluide frigorigène à basse pression (dans laquelle le fluide absorbe de la chaleur) ; la compression du fluide vaporisé jusqu’à une pression élevée, la condensation du fluide vaporisé en liquide à pression élevée (dans laquelle le fluide rejette de la chaleur), et la détente du fluide pour terminer le cycle. Such an air conditioning device is based on a thermodynamic cycle comprising the vaporization of the refrigerant at low pressure (in which the fluid absorbs heat); compressing the vaporized fluid to high pressure, condensing the vaporized fluid into a liquid at high pressure (in which the fluid rejects heat), and expanding the fluid to complete the cycle.
Le choix du fluide frigorigène est dicté par ses propriétés thermodynamiques, mais également par son impact sur l’environnement, en particulier sur le réchauffement climatique. Ainsi, les composés chlorés, par exemple de type chlorofluorocarbures et hydrochlorofluorocarbures, qui présentent le désavantage d’endommager la couche d’ozone, ont été remplacés progressivement par des composés non chlorés tels que les hydrofluorocarbures, les fluoroéthers et les fluorooléfines. The choice of refrigerant is dictated by its thermodynamic properties, but also by its impact on the environment, in particular on global warming. Thus, chlorinated compounds, for example of the chlorofluorocarbons and hydrochlorofluorocarbons type, which have the disadvantage of damaging the ozone layer, have been gradually replaced by non-chlorinated compounds such as hydrofluorocarbons, fluoroethers and fluoroolefins.
Le fluide réfrigérant le plus couramment utilisé à l’heure actuelle dans les systèmes de climatisation automobile est le 1, 1,1,2-tétrafluoroéthane, désigné sous l’appellation « R134a ». Plus récemment, un nouveau réfrigérant, présentant un potentiel de réchauffement planétaire (PRP) réduit, le 2,3,3,3-tétrafluoropropène, désigné sous l’appellation « HFO-1234yf », a été développé, et est désormais préconisé en Europe du fait de son bas PRP et de ses bonnes performances énergétiques.
D’autre part, pour lubrifier les pièces mobiles du ou des compresseurs d’un système réfrigérant, tel qu’un dispositif de climatisation, une huile de lubrification doit être ajoutée au niveau du dispositif de climatisation automobile, en particulier au niveau du compresseur. L’huile peut être, d’une manière générale, minérale ou synthétique. The refrigerant most commonly used at present in automotive air conditioning systems is 1, 1,1,2-tetrafluoroethane, referred to as “R134a”. More recently, a new refrigerant, exhibiting a reduced global warming potential (GWP), 2,3,3,3-tetrafluoropropene, referred to as “HFO-1234yf”, has been developed, and is now recommended in Europe. due to its low GWP and its good energy performance. On the other hand, to lubricate the moving parts of the compressor (s) of a refrigerant system, such as an air conditioning device, a lubricating oil must be added at the level of the automobile air conditioning device, in particular at the level of the compressor. The oil can generally be mineral or synthetic.
L’huile de lubrification utilisée au niveau du compresseur de climatisation automobile est amenée à être en contact avec le gaz réfrigérant, ce qui impose des contraintes de miscibilité, de compatibilité et de stabilité chimique du fluide réfrigérant avec l’huile de lubrification. The lubricating oil used in the automotive air conditioning compressor is brought into contact with the refrigerant gas, which imposes constraints on miscibility, compatibility and chemical stability of the refrigerant with the lubricating oil.
Plus particulièrement, l’huile de lubrification doit être choisie de manière à ne pas réagir avec le fluide frigorigène ou impacter négativement les propriétés de celui-ci. Ainsi, il est primordial que l’huile de lubrification soit compatible avec le fluide frigorigène mis en œuvre. En particulier, elle doit être chimiquement et thermiquement stable en présence du fluide frigorigène. More particularly, the lubricating oil must be chosen so as not to react with the refrigerant or to negatively impact the properties of the latter. Thus, it is essential that the lubricating oil is compatible with the refrigerant used. In particular, it must be chemically and thermally stable in the presence of the refrigerant.
Egalement, il est souhaitable que le fluide réfrigérant présente de bonnes propriétés de miscibilité avec l’huile de lubrification, autrement dit que le mélange du fluide réfrigérant avec l’huile de lubrification ne subisse pas de séparation de phase lors de son utilisation au niveau du système de climatisation, c’est-à-dire dans une large de gamme de températures, de préférence allant de -10 °C, en particulier de -20 °C, jusqu’à 10 °C, de préférence jusqu’à 30 °C. Also, it is desirable that the refrigerant fluid exhibits good properties of miscibility with the lubricating oil, in other words that the mixture of the refrigerant fluid with the lubricating oil does not undergo phase separation during its use at the level of the lubricant. air conditioning system, i.e. over a wide temperature range, preferably from -10 ° C, in particular from -20 ° C, up to 10 ° C, preferably up to 30 ° vs.
De fait, une mauvaise miscibilité du fluide réfrigérant avec l’huile de lubrification peut impacter négativement la durée de vie et l’efficacité du système de climatisation. Par exemple, lorsque le fluide réfrigérant présente une mauvaise miscibilité avec l’huile de lubrification, celle-ci a tendance à être piégée au niveau de l’évaporateur et à ne pas retourner au compresseur, ce qui ne permet pas une lubrification suffisante des pièces du compresseur. In fact, poor miscibility of the refrigerant with the lubricating oil can negatively impact the life and efficiency of the air conditioning system. For example, when the refrigerant fluid exhibits poor miscibility with the lubricating oil, the latter tends to be trapped at the level of the evaporator and not to return to the compressor, which does not allow sufficient lubrication of the parts. compressor.
Malheureusement, les fluides réfrigérants à base de composés hydrofluorocarbonés, tels que le R134a et/ou le HFO-1234yf, présentent une miscibilité avec les huiles de lubrification, usuellement employées dans les systèmes de climatisation, souvent imparfaite. Unfortunately, refrigerant fluids based on hydrofluorocarbon compounds, such as R134a and / or HFO-1234yf, exhibit miscibility with lubricating oils, usually used in air conditioning systems, which is often imperfect.
Par conséquent, il importe de formuler une huile de lubrification, qui présente de bonnes propriétés en termes de stabilité chimique et thermique, de compatibilité et de
miscibilité avec les fluides réfrigérants à base de composé(s) hydrofluorocarboné(s), en particulier avec le R134a et/ou le HFO-1234yf. Therefore, it is important to formulate a lubricating oil, which exhibits good properties in terms of chemical and thermal stability, compatibility and miscibility with refrigerant fluids based on hydrofluorocarbon compound (s), in particular with R134a and / or HFO-1234yf.
A cet effet, le document EP 2 161 323 au nom d’IDEMITSU propose par exemple des formulations lubrifiantes, compatibles avec des fluides réfrigérants hydrocarbonés fluorés insaturés, tel que le 1,2,3,3,3-pentafluoropropène, à base de polyoxyalkylènes glycols dont les deux extrémités hydroxyles sont coiffées (« double end capped » en terminologie anglo-saxonne), présentant un indice d’hydroxyle inférieur ou égal à 5 mgKOH/g. De tels polyoxyalkylènes glycols sont plus particulièrement choisis parmi le polypropylène glycol diméthyléther, le polyéthylène-polypropylène glycol diméthyléther, le méthyl butyl éther de polyéthylène-polypropylène glycol et le diacétate de polypropylène glycol. To this end, document EP 2 161 323 in the name of IDEMITSU proposes for example lubricating formulations, compatible with unsaturated fluorinated hydrocarbon refrigerant fluids, such as 1,2,3,3,3-pentafluoropropene, based on polyoxyalkylenes glycols whose two hydroxyl ends are capped (“double end capped” in English terminology), exhibiting a hydroxyl number less than or equal to 5 mgKOH / g. Such polyoxyalkylene glycols are more particularly chosen from polypropylene glycol dimethyl ether, polyethylene-polypropylene glycol dimethyl ether, polyethylene-polypropylene glycol methyl butyl ether and polypropylene glycol diacetate.
On peut encore citer le document EP 2 367 915, au nom de Shrieve Chemical Products, qui propose des huiles lubrifiantes compatibles avec le réfrigérant HFO-1234yf, à base de polyalkylènes glycols « double end capped », de formule RX(RbO)yRc, avec R représentant un substituant en Ci4 comprenant un hétérocycle et Rc représentant un groupe C3 alkyle. Mention may also be made of document EP 2 367 915, in the name of Shrieve Chemical Products, which proposes lubricating oils compatible with the refrigerant HFO-1234yf, based on "double end capped" polyalkylene glycols, of formula RX (R b O). y R c , with R representing a C14 substituent comprising a heterocycle and R c representing a C3 alkyl group.
Résumé de l’invention Summary of the invention
La présente invention vise précisément à proposer une nouvelle composition lubrifiante, destinée à un système de transfert de chaleur par compression de gaz, en particulier à un compresseur de climatisation, mettant en œuvre un réfrigérant à base de composé(s) fluorocarboné(s), en particulier de type R134a et/ou HFO-1234yf. The present invention aims specifically to provide a novel lubricating composition, intended for a heat transfer system by gas compression, in particular for an air conditioning compressor, using a refrigerant based on fluorocarbon compound (s), in particular of the R134a and / or HFO-1234yf type.
Plus précisément, les inventeurs ont découvert qu’il est possible d’accéder à une composition lubrifiante, répondant aux impératifs précités des lubrifiants des systèmes réfrigérants, en mettant en œuvre, à titre d’huile de base, un mélange d’au moins deux polyalkylènes glycols spécifiques. More specifically, the inventors have discovered that it is possible to access a lubricating composition, meeting the aforementioned requirements for lubricants for refrigeration systems, by using, as base oil, a mixture of at least two specific polyalkylene glycols.
Ainsi, la présente invention concerne, selon un premier de ses aspects, une composition lubrifiante, destinée à un système réfrigérant comprenant un circuit de compression de gaz, en particulier à un compresseur d’un système de climatisation automobile, comprenant : Thus, the present invention relates, according to a first of its aspects, to a lubricating composition, intended for a refrigerant system comprising a gas compression circuit, in particular for a compressor of an automobile air conditioning system, comprising:
- au moins un premier polyalkylène glycol, noté PAG A, présentant un indice d’hydroxyle strictement supérieur à 50 mgKOH/g et une viscosité cinématique mesurée à 100 °C selon
la norme ASTM D445, allant de 5 à 10 mm2/s ; et - at least a first polyalkylene glycol, denoted PAG A, exhibiting a hydroxyl number strictly greater than 50 mgKOH / g and a kinematic viscosity measured at 100 ° C according to the ASTM D445 standard, ranging from 5 to 10 mm 2 / s; and
- au moins un deuxième polyalkylène glycol, noté PAG B, de viscosité cinématique mesurée à 100 °C selon la norme ASTM D445, allant de 100 à 500 mm2/s, - at least one second polyalkylene glycol, noted PAG B, with a kinematic viscosity measured at 100 ° C according to the ASTM D445 standard, ranging from 100 to 500 mm 2 / s,
lesdits polyalkylènes glycols A et B étant présents dans un rapport massique PAG(s) A/PAG(s) B compris entre 60/40 et 99/1. said polyalkylene glycols A and B being present in a PAG (s) A / PAG (s) B mass ratio of between 60/40 and 99/1.
L’invention concerne encore, selon un autre de ses aspects, Tutilisation d’une composition lubrifiante, telle que définie ci-dessus, dans un système réfrigérant comprenant un circuit de compression de gaz, en particulier dans un compresseur d’un système de climatisation automobile, en association avec un fluide réfrigérant à base de composés hydrofluorocarbonés, en particulier avec un fluide réfrigérant à base de RI 34a et/ou HFO-1234yf. The invention also relates, according to another of its aspects, to the use of a lubricating composition, as defined above, in a refrigerant system comprising a gas compression circuit, in particular in a compressor of an air conditioning system. automotive, in association with a refrigerant based on hydrofluorocarbon compounds, in particular with a refrigerant based on RI 34a and / or HFO-1234yf.
Une composition lubrifiante selon l’invention peut comprendre en outre un ou plusieurs additifs, en particulier choisis parmi les additifs anti-usure et extrême pression, les antioxydants, les agents d’onctuosité, les capteurs d’acide et les agents anti -mousse. A lubricating composition according to the invention may further comprise one or more additives, in particular chosen from antiwear and extreme pressure additives, antioxidants, lubricating agents, acid scavengers and anti-foaming agents.
Comme détaillé dans la suite du texte, selon un mode de réalisation particulièrement préféré, une composition lubrifiante selon l’invention comprend en outre au moins un additif antioxydant phénolique. As detailed in the remainder of the text, according to a particularly preferred embodiment, a lubricating composition according to the invention further comprises at least one phenolic antioxidant additive.
De préférence, une composition lubrifiante selon l’invention comprend en outre au moins un additif anti-usure de type phosphate d’amine. Preferably, a lubricating composition according to the invention further comprises at least one antiwear additive of amine phosphate type.
L’indice d’hydroxyle (indice OH) représente la quantité d’hydroxyde de potassium en mg correspondant au nombre de groupes hydroxyles présents dans 1 g de matière. L’indice d’hydroxyle est représentatif de la fonctionnalisation ou non des extrémités hydroxyles du polyalkylène glycol mis en œuvre. Plus particulièrement, les polyalkylènes glycols de type PAG A mis en œuvre selon l’invention, présentant un indice d’hydroxyle strictement supérieur à 50 mgKOH/g, sont typiquement des polyalkylènes glycols présentant une seule extrémité hydroxyle coiffée, plus généralement désignés sous l’appellation « single end capped » en terminologie anglo-saxonne. Autrement dit, les polyalkylènes glycols A selon l’invention présentent au moins une extrémité hydroxyle libre. The hydroxyl number (OH number) represents the amount of potassium hydroxide in mg corresponding to the number of hydroxyl groups present in 1 g of material. The hydroxyl number is representative of the functionalization or not of the hydroxyl ends of the polyalkylene glycol used. More particularly, the polyalkylene glycols of PAG A type used according to the invention, exhibiting a hydroxyl number strictly greater than 50 mgKOH / g, are typically polyalkylene glycols having a single capped hydroxyl end, more generally designated under the name "single end capped" in Anglo-Saxon terminology. In other words, the polyalkylene glycols A according to the invention have at least one free hydroxyl end.
La mise en œuvre de polyalkylènes glycols de type « single end capped » à titre d’huile de base majoritaire dans une formulation lubrifiante destinée à un système réfrigérant, n’était nullement évidente. De fait, les polyalkylènes glycols présentant les deux
extrémités coiffées, autrement dit ne présentant pas de fonction hydroxyle libre (« double end capped » en terminologie anglo-saxonne) sont habituellement préférés aux polyalkylènes glycols « single end capped », en raison de leur stabilité thermique. The use of polyalkylene glycols of the “single end capped” type as the majority base oil in a lubricating formulation intended for a refrigerant system was by no means obvious. In fact, the polyalkylene glycols exhibiting the two capped ends, in other words not exhibiting a free hydroxyl function (“double end capped” in English terminology) are usually preferred to “single end capped” polyalkylene glycols, because of their thermal stability.
Contre toute attente, les inventeurs ont montré qu’il est possible, en associant deux polyalkylènes glycols distincts, de préférence mis en œuvre en combinaison avec des additifs spécifiques, en particulier avec au moins un antioxydant phénolique et au moins un additif anti-usure de type phosphate d’amine, d’obtenir une formulation lubrifiante répondant pleinement aux contraintes de lubrification des systèmes réfrigérants, tels que des compresseurs de climatisation, mettant en œuvre des réfrigérants de type R134a et/ou HFO- 1234yf. Against all expectations, the inventors have shown that it is possible, by combining two distinct polyalkylene glycols, preferably used in combination with specific additives, in particular with at least one phenolic antioxidant and at least one anti-wear additive of amine phosphate type, to obtain a lubricating formulation fully meeting the lubrication constraints of refrigerant systems, such as air conditioning compressors, using refrigerants of the R134a and / or HFO-1234yf type.
Ainsi, de manière avantageuse, une composition lubrifiante selon l’invention, comprenant une huile de base formée majoritairement du mélange des deux polyalkylènes glycols A et B tels que définis ci-dessus, présente une excellente miscibilité avec un réfrigérant à base de composés de transfert de chaleur hydrofluorocarbonés, en particulier avec un réfrigérant à base de R134a et/ou HFO-1234yf sur une large plage de température. Ces propriétés de miscibilité peuvent être testées selon la norme DIN 51514. Thus, advantageously, a lubricating composition according to the invention, comprising a base oil formed mainly from the mixture of the two polyalkylene glycols A and B as defined above, has excellent miscibility with a coolant based on transfer compounds. hydrofluorocarbon heaters, in particular with a refrigerant based on R134a and / or HFO-1234yf over a wide temperature range. These miscibility properties can be tested according to DIN 51514.
Egalement, une composition lubrifiante selon l’invention présente avantageusement d’excellentes propriétés en termes de stabilité thermique et chimique, en présence d’un fluide frigorigène à base de composés hydrofluorocarbonés, en particulier à base de R134a et/ou HFO-1234yf. Also, a lubricating composition according to the invention advantageously exhibits excellent properties in terms of thermal and chemical stability, in the presence of a refrigerant based on hydrofluorocarbon compounds, in particular based on R134a and / or HFO-1234yf.
Avantageusement, la mise en point d’une formule lubrifiante selon l’invention, présentant une bonne stabilité thermique et une bonne miscibilité avec des réfrigérants à base de R134a et/ou HFO-1234yf, permet de procéder au remplacement des fluides réfrigérants utilisés jusqu’à présent dans les dispositifs de climatisation automobile, tels que le 1, 1- difluoroéthane, sans impacter la lubrification des pièces du compresseur et l’efficacité du système réfrigérant. Advantageously, the development of a lubricating formula according to the invention, exhibiting good thermal stability and good miscibility with refrigerants based on R134a and / or HFO-1234yf, makes it possible to proceed with the replacement of the refrigerant fluids used up to now in automotive air conditioning systems, such as 1, 1- difluoroethane, without impacting the lubrication of compressor parts and the efficiency of the refrigerant system.
Enfin, les polyalkylènes glycols présentant une unique extrémité coiffée ayant un coût plus faible que des polyalkylènes glycols présentant les deux extrémités coiffées, la formulation lubrifiante selon l’invention, dans laquelle le ou les premiers polyalkylènes glycols, PAG A, constituent l’huile de base majoritaire, s’avère particulièrement avantageuse en termes de coût de revient.
Par ailleurs, la composition lubrifiante selon l’invention présente des propriétés tribologiques satisfaisantes et particulièrement adaptées à sa mise en œuvre pour la lubrification d’un compresseur d’un système de climatisation automobiles. En particulier, la composition lubrifiante selon l’invention présente un bon pouvoir lubrifiant, un bas point d’écoulement, une bonne fluidité à basse température. Finally, the polyalkylene glycols having a single capped end having a lower cost than polyalkylene glycols having the two capped ends, the lubricating formulation according to the invention, in which the first polyalkylene glycols, PAG A, constitute the oil of majority basis, proves particularly advantageous in terms of cost price. Moreover, the lubricating composition according to the invention exhibits satisfactory tribological properties and particularly suitable for its use for lubricating a compressor of an automobile air conditioning system. In particular, the lubricating composition according to the invention exhibits good lubricating power, a low pour point, good fluidity at low temperature.
De préférence, elle présente une viscosité cinématique, mesurée à 40 °C (KV40), selon la norme ASTM D445 (ISO 3104), comprise entre 30 et 60 mm2/s, en particulier entre 30 et 55 mm2/s et plus particulièrement entre 40 et 50 mm2/s. Preferably, it has a kinematic viscosity, measured at 40 ° C (KV40), according to the ASTM D445 (ISO 3104) standard, of between 30 and 60 mm 2 / s, in particular between 30 and 55 mm 2 / s and more particularly between 40 and 50 mm 2 / s.
L’invention concerne encore, selon un autre de ses aspects, une composition de transfert de chaleur, pour un système réfrigérant comprenant un circuit de compression de gaz, en particulier pour un système de climatisation automobile, comprenant : The invention also relates, according to another of its aspects, to a heat transfer composition, for a refrigerant system comprising a gas compression circuit, in particular for an automotive air conditioning system, comprising:
- une composition lubrifiante telle que définie précédemment ; et - a lubricating composition as defined above; and
- un fluide réfrigérant à base de composés hydroflu orocarbonés, en particulier à base de 1, 1,1,2-tétrafluoroéthane (R134a) et/ou de 2,3,3,3-tétrafluoropropène (HFO-1234yf). - a refrigerating fluid based on orocarbon hydrofluoric compounds, in particular based on 1, 1,1,2-tetrafluoroethane (R134a) and / or 2,3,3,3-tetrafluoropropene (HFO-1234yf).
En particulier, le fluide réfrigérant considéré selon l’invention peut consister en du R134a, du HFO-1234yf ou un mélange de R134a et de HFO-1234yf. In particular, the refrigerant under consideration according to the invention may consist of R134a, HFO-1234yf or a mixture of R134a and HFO-1234yf.
Par « composé de transfert de chaleur », respectivement « fluide de transfert de chaleur », encore appelé « fluide réfrigérant » ou « fluide frigorigène », on entend désigner un composé, respectivement un fluide, susceptible d’absorber de la chaleur en s’évaporant à basse température et à basse pression, et de rejeter de la chaleur en se condensant à haute température et haute pression, dans un circuit de compression de gaz. De manière générale, un fluide de transfert de chaleur peut comprendre un seul, deux, trois ou plus composés de transfert de chaleur. By "heat transfer compound", respectively "heat transfer fluid", also called "refrigerant fluid" or "refrigerant" is meant a compound, respectively a fluid, capable of absorbing heat in s' evaporating at low temperature and low pressure, and rejecting heat by condensing at high temperature and high pressure, in a gas compression circuit. Generally speaking, a heat transfer fluid can include one, two, three or more heat transfer compounds.
Selon un mode de réalisation particulier, le réfrigérant comprend uniquement comme composé de transfert de chaleur le R134a. According to a particular embodiment, the refrigerant comprises only R134a as heat transfer compound.
Selon un autre mode de réalisation particulier, le réfrigérant comprend uniquement comme composé de transfert de chaleur le HFO-1234yf. According to another particular embodiment, the refrigerant comprises only HFO-1234yf as a heat transfer compound.
Selon une autre variante de réalisation, il s’agit d’un mélange de RI 34a et de HFO-1234yf.
L’invention vise encore l’utilisation d’une composition de transfert de chaleur telle que définie précédemment dans un système réfrigérant comprenant un circuit de compression de gaz, en particulier pour un système de climatisation automobile. According to another variant embodiment, it is a mixture of RI 34a and HFO-1234yf. The invention also relates to the use of a heat transfer composition as defined above in a refrigerant system comprising a gas compression circuit, in particular for an automobile air conditioning system.
Elle concerne également un système réfrigérant comprenant un circuit de compression de gaz, en particulier un système de climatisation automobile, comprenant une composition de transfert de chaleur telle que définie précédemment. It also relates to a refrigerant system comprising a gas compression circuit, in particular an automobile air conditioning system, comprising a heat transfer composition as defined above.
L’invention concerne encore, selon un autre de ses aspects, un kit destiné à être mis en œuvre pour un système réfrigérant comprenant un circuit de compression de gaz, comprenant : According to another of its aspects, the invention also relates to a kit intended to be implemented for a refrigerant system comprising a gas compression circuit, comprising:
- une composition lubrifiante telle que définie précédemment ; et - a lubricating composition as defined above; and
- un fluide réfrigérant à base de composés hydroflu orocarbonés, en particulier à base de 1,1,1,2-tétrafluoroéthane (R134a) et/ou de 2,3,3,3-tétrafluoropropène (HFO-1234yf). - a refrigerating fluid based on hydrofluorocarbon compounds, in particular based on 1,1,1,2-tetrafluoroethane (R134a) and / or 2,3,3,3-tetrafluoropropene (HFO-1234yf).
Le kit peut être plus particulièrement destiné à une installation de climatisation automobile. The kit may be more particularly intended for an automobile air conditioning installation.
D’autres caractéristiques, variantes et avantages des compositions lubrifiantes selon l’invention ressortiront mieux à la lecture de la description et des exemples qui vont suivre, donnés à titre illustratif et non limitatif de l’invention. Other characteristics, variants and advantages of the lubricating compositions according to the invention will emerge better on reading the description and the examples which follow, given by way of illustration and not by way of limitation of the invention.
Dans la suite du texte, les expressions « compris entre ... et ... », « allant ... à ... » et « variant de ... à ... » sont équivalentes et entendent signifier que les bornes sont incluses, sauf mention contraire. In the remainder of the text, the expressions "between ... and ...", "ranging ... to ..." and "varying from ... to ..." are equivalent and are intended to mean that the limits are included, unless otherwise noted.
Sauf indication contraire, l’expression « comportant un(e) » doit être comprise comme « comprenant au moins un(e) ». Unless indicated otherwise, the expression "comprising a" should be understood as "comprising at least one".
Description détaillée detailed description
COMPOSITION LUBRIFIANTE LUBRICATING COMPOSITION
Comme indiqué précédemment, une composition lubrifiante selon l’invention, destinée à un système réfrigérant, en particulier à un système de climatisation automobile, comprend une huile de base formée majoritairement d’un mélange d’au moins deux polyalkylènes glycols distincts, notés PAG A et PAG B, en particulier tels que définis ci- dessous.
Polyalkylène glvcol A As indicated above, a lubricating composition according to the invention, intended for a refrigerant system, in particular for an automobile air conditioning system, comprises a base oil formed mainly from a mixture of at least two distinct polyalkylene glycols, denoted PAG A and PAG B, in particular as defined below. Polyalkylene glvcol A
Dans la suite du texte, on désigne sous l’appellation « PAG A », le ou les polyalkylènes glycols mis en œuvre dans une composition lubrifiante selon l’invention, répondant aux critères définis précédemment pour le premier polyalkylène glycol selon l’invention. In the remainder of the text, the term "PAG A" denotes the polyalkylene glycol (s) used in a lubricating composition according to the invention, meeting the criteria defined above for the first polyalkylene glycol according to the invention.
En particulier, par « PAG A », on entend en particulier un unique PAG A ou un mélange de deux ou plus PAG A. In particular, by "PAG A" is meant in particular a single PAG A or a mixture of two or more PAG A.
Le PAG A selon l’invention présente un indice d’hydroxyle strictement supérieur à 50 mgKOH/g, en particulier allant de 52 à 75 mgKOH/g et plus particulièrement de 55 à 70 mgKOH/g. The PAG A according to the invention exhibits an hydroxyl number strictly greater than 50 mgKOH / g, in particular ranging from 52 to 75 mgKOH / g and more particularly from 55 to 70 mgKOH / g.
L’indice d’hydroxyle peut être mesurée selon la norme ASTM El 899-08. The hydroxyl number can be measured according to ASTM El 899-08.
Le PAG A selon l’invention est plus particulièrement un polyalkylène glycol présentant une seule de ses extrémités hydroxyles coiffée par un groupement (« single end capped » en terminologie anglo-saxonne). Autrement dit, il présente au moins une extrémité hydroxyle libre. The PAG A according to the invention is more particularly a polyalkylene glycol exhibiting only one of its hydroxyl ends capped by a group ("single end capped" in English terminology). In other words, it has at least one free hydroxyl end.
Le PAG A selon l’invention se distingue ainsi des polyalkylènes glycols, dits « double end capped », présentant les deux extrémités hydroxyles coiffées. PAG A according to the invention is thus distinguished from polyalkylene glycols, called "double end capped", having the two capped hydroxyl ends.
Le groupement hydroxyle peut être par exemple coiffé avec un groupement alkyle contenant de 1 à 10 atomes de carbone, en particulier de 1 à 5 atomes de carbone, comprenant éventuellement un ou plusieurs hétéroatomes, tels que des atomes d’azote, ou encore avec un groupement fluoroalkyle contenant éventuellement des hétéroatomes tels que l’azote. Le groupement hydroxyle terminal peut aussi être coiffé en formant un ester avec un acide carboxylique. L’acide carboxylique peut également être fluoré. The hydroxyl group may for example be capped with an alkyl group containing from 1 to 10 carbon atoms, in particular from 1 to 5 carbon atoms, optionally comprising one or more heteroatoms, such as nitrogen atoms, or alternatively with a fluoroalkyl group optionally containing heteroatoms such as nitrogen. The terminal hydroxyl group can also be capped by forming an ester with a carboxylic acid. The carboxylic acid can also be fluorinated.
De préférence, le groupement terminal d’un PAG A selon l’invention est choisi parmi des groupements alkyles ayant entre 1 et 5 atomes de carbone, de préférence entre 1 et 4 atomes de carbone, tel qu’un groupement méthyle ou butyle. Preferably, the terminal group of a PAG A according to the invention is chosen from alkyl groups having between 1 and 5 carbon atoms, preferably between 1 and 4 carbon atoms, such as a methyl or butyl group.
Par ailleurs, le PAG A mis en œuvre selon l’invention présente une viscosité cinématique mesurée à 100 °C (KV100), mesurée selon la norme ASTM D445, allant de 5 à 10 mm2/s.
De préférence, il présente une viscosité cinématique mesurée à 100 °C selon la norme ASTM D445, comprise entre 6 et 9 mm2/s. Furthermore, the PAG A used according to the invention has a kinematic viscosity measured at 100 ° C. (KV100), measured according to the ASTM D445 standard, ranging from 5 to 10 mm 2 / s. Preferably, it has a kinematic viscosity measured at 100 ° C. according to the ASTM D445 standard, of between 6 and 9 mm 2 / s.
Le PAG A selon l’invention peut être formé d’unités oxyalkylènes contenant chacune de 1 à 8 atomes de carbone, de préférence de 2 à 4 atomes de carbone. Il peut s’agir d’un homopolymère ou d’un copolymère de 2, 3 ou plus de 3 groupes choisis parmi les groupes oxyéthylène, oxypropylène, oxybutylène, oxypentylène et les combinaisons de ceux-ci. The PAG A according to the invention can be formed from oxyalkylene units each containing 1 to 8 carbon atoms, preferably 2 to 4 carbon atoms. It can be a homopolymer or a copolymer of 2, 3 or more than 3 groups selected from oxyethylene, oxypropylene, oxybutylene, oxypentylene groups and combinations thereof.
De préférence, le PAG A comprend au moins des unités oxypropylène. Preferably, the PAG A comprises at least oxypropylene units.
Plus particulièrement, il est formé de préférence d’au moins 50 % massique d’unités oxypropylène (OP), en particulier d’au moins 75 % massique d’unités oxypropylène, voire d’au moins 95 % massique d’unités oxypropylène. More particularly, it is preferably formed from at least 50% by mass of oxypropylene (PO) units, in particular at least 75% by mass of oxypropylene units, or even at least 95% by mass of oxypropylene units.
Selon un mode de réalisation particulièrement préféré, le PAG A est un copolymère d’oxyde de propylène et d’oxyde d’éthylène. According to a particularly preferred embodiment, PAG A is a copolymer of propylene oxide and ethylene oxide.
Il s’agit de préférence d’un copolymère d’oxyde de propylène et d’oxyde d’éthylène, présentant un ratio massique unités oxypropylène (OP)/unités oxyéthylène (OE) supérieur ou égal à 1 : 1, en particulier compris entre 2 : 1 et 10 : 1. It is preferably a copolymer of propylene oxide and ethylene oxide, exhibiting a weight ratio of oxypropylene (OP) units / oxyethylene (EO) units greater than or equal to 1: 1, in particular between 2: 1 and 10: 1.
Le PAG A mis en œuvre selon l’invention peut être préparé par polymérisation ou copolymérisation d’oxydes d’alkylène comprenant de 1 à 8 atomes de carbone, en particulier de 2 à 4 atomes de carbone. The PAG A used according to the invention can be prepared by polymerization or copolymerization of alkylene oxides comprising from 1 to 8 carbon atoms, in particular from 2 to 4 carbon atoms.
La synthèse d’un PAG A selon l’invention met plus particulièrement en œuvre un initiateur de type alcool monovalent possédant de 1 à 10 atomes de carbone, en particulier du méthanol ou du butanol, afin d’obtenir un polyoxyalkylène glycol présentant un groupement éther à l’une de ses extrémités et une extrémité hydroxyle libre. The synthesis of a PAG A according to the invention more particularly uses an initiator of monovalent alcohol type having from 1 to 10 carbon atoms, in particular methanol or butanol, in order to obtain a polyoxyalkylene glycol having an ether group at one of its ends and a free hydroxyl end.
L’homme du métier est à même d’ajuster les conditions opératoires de synthèse du polyalkylène glycol, afin d’obtenir le « single end capped » PAG souhaité, en particulier présentant un indice d’hydroxyle tel que défini ci-dessus. A person skilled in the art is able to adjust the operating conditions for the synthesis of polyalkylene glycol, in order to obtain the desired "single end capped" PAG, in particular having an hydroxyl number as defined above.
De préférence, un PAG A selon l’invention présente une masse moléculaire en poids allant de 300 à 2000 g/mol, en particulier comprise entre 800 et 1500 g/mol.
La masse moléculaire en poids peut être mesurée par chromatographie à Perméation de Gel (GPC). Preferably, a PAG A according to the invention has a molecular mass by weight ranging from 300 to 2000 g / mol, in particular between 800 and 1500 g / mol. The molecular mass by weight can be measured by Gel Permeation Chromatography (GPC).
Le point éclair du PAG A est de préférence supérieur ou égale à 160 °C, en particulier supérieur ou égale à 190 °C. The flash point of PAG A is preferably greater than or equal to 160 ° C, in particular greater than or equal to 190 ° C.
Le point éclair peut être mesuré par la norme ISO 2592. The flash point can be measured by ISO 2592.
De préférence, le PAG A mis en œuvre pour former une composition lubrifiante selon l’invention présente une teneur en eau inférieure ou égale à 700 ppm en poids. Preferably, the PAG A used to form a lubricating composition according to the invention has a water content of less than or equal to 700 ppm by weight.
Des PAG A, satisfaisant les critères précités et pouvant être mis en œuvre dans une composition lubrifiante selon l’invention, peuvent être disponibles dans le commerce, par exemples les huiles commercialisées sous les références Konlube® RF 240 YF, Konlube® RF 232 YF et Géolube® PAG A 01930. PAG A, satisfying the above criteria and can be implemented in a lubricating composition according to the invention may be commercially available, for example the oils sold under the references Konlube ® RF 240 YF, Konlube ® RF 232 and YF Géolube ® PAG A 01930.
L’huile commercialisée sous la référence Konlube® RF 232 YF est particulièrement appropriée. The oil marketed under the Konlube ® RF 232 YF reference is particularly suitable.
Le ou les polyalkylènes glycols A peuvent être mis en œuvre à raison de 60 % à 99 % en masse, par rapport à la masse totale de la composition lubrifiante, en particulier de 70 à 99 % en masse et plus préférentiellement de 80 à 98 % en masse, encore plus préférentiellement de 85 à 95 % en masse. The polyalkylene glycol (s) A can be used in an amount of 60% to 99% by mass, relative to the total mass of the lubricating composition, in particular from 70 to 99% by mass and more preferably from 80 to 98% by weight, even more preferably from 85 to 95% by weight.
Le ou les polyalkylènes glycols A selon l’invention représentent de préférence plus de 70 % massique, en particulier plus de 75 % massique, de la masse totale des huiles de base présentes dans la composition lubrifiante selon l’invention. The polyalkylene glycol (s) A according to the invention preferably represent more than 70% by mass, in particular more than 75% by mass, of the total mass of the base oils present in the lubricating composition according to the invention.
Polvalkylène(s) glvcol(s) B Polvalkylene (s) glvcol (s) B
De même que pour le ou les polyalkylènes glycols A, on entend sous l’appellation « PAG B », un ou plusieurs polyalkylènes glycols mis en œuvre dans une composition lubrifiante selon l’invention, répondant aux critères définis précédemment pour le deuxième polyalkylène glycol selon l’invention. As for the polyalkylene glycol (s) A, under the name “PAG B” is meant one or more polyalkylene glycols used in a lubricating composition according to the invention, meeting the criteria defined above for the second polyalkylene glycol according to invention.
Le PAG B mis en œuvre selon l’invention se distingue d’un PAG A tel que décrit précédemment, notamment en ce qu’il présente une viscosité cinématique KV100 plus élevée que celle d’un PAG A.
En particulier, le PAG B présente une viscosité cinématique mesurée à 100 °C (KV100), selon la norme ASTM D445, supérieure ou égale à 100 mm2/s et inférieure ou égale à 500 mm2/s. The PAG B used according to the invention differs from a PAG A as described above, in particular in that it has a higher kinematic viscosity KV100 than that of a PAG A. In particular, PAG B has a kinematic viscosity measured at 100 ° C. (KV100), according to the ASTM D445 standard, greater than or equal to 100 mm 2 / s and less than or equal to 500 mm 2 / s.
De préférence, la viscosité cinématique KV100 d’un PAG B mis en œuvre selon l’invention est comprise entre 120 et 300 mm2/s, et plus particulièrement entre 140 et 200 mm2/s, voire entre 150 et 190 mm2/s. Preferably, the kinematic viscosity KV100 of a PAG B implemented according to the invention is between 120 and 300 mm 2 / s, and more particularly between 140 and 200 mm 2 / s, or even between 150 and 190 mm 2 / s.
Le PAG B mis en œuvre selon l’invention est plus particulièrement obtenu par polymérisation ou copolymérisation d’oxydes d’alkylène comprenant de 1 à 8 atomes de carbone, en particulier de 2 à 4 atomes de carbone. The PAG B used according to the invention is more particularly obtained by polymerization or copolymerization of alkylene oxides comprising from 1 to 8 carbon atoms, in particular from 2 to 4 carbon atoms.
De préférence, le PAG B comprend 50 % ou moins de 50 % massique d’unités oxypropylène. Preferably, the PAG B comprises 50% or less than 50% by weight of oxypropylene units.
De préférence, il s’agit d’un copolymère d’oxyde de propylène et d’oxyde d’éthylène, en particulier formé d’au moins 50 % massique d’unités oxyéthylènes, et plus particulièrement présentant un ratio massique unités oxypropylène (OP)/unités oxy éthylène (OE) allant de 2 :8 à 1 : 1, notamment de 4 :6 à 1 : 1. Preferably, it is a copolymer of propylene oxide and of ethylene oxide, in particular formed of at least 50% by weight of oxyethylene units, and more particularly having a ratio by weight of oxypropylene units (PO ) / oxy ethylene (EO) units ranging from 2: 8 to 1: 1, especially from 4: 6 to 1: 1.
Le PAG B peut présenter une seule (« single end capped » en terminologie anglo-saxonne) ou deux (« double end capped » en terminologie anglo-saxonne) extrémités hydroxyles coiffées. The PAG B can have a single (“single end capped” in English terminology) or two (“double end capped” in English terminology) capped hydroxyl ends.
Comme décrit précédemment, le groupement hydroxyle peut être coiffé avec un groupement alkyle contenant de 1 à 10 atomes de carbone, comprenant éventuellement un ou plusieurs hétéroatomes, tels que des atomes d’azote, un groupement fluoroalkyle contenant des hétéroatomes, tels que l’azote. As described above, the hydroxyl group can be capped with an alkyl group containing from 1 to 10 carbon atoms, optionally comprising one or more heteroatoms, such as nitrogen atoms, a fluoroalkyl group containing heteroatoms, such as nitrogen .
Selon un mode de réalisation particulier, le PAG B est un polyalkylène glycol « double end capped ». According to a particular embodiment, the PAG B is a “double end capped” polyalkylene glycol.
Lorsque les deux extrémités hydroxyles du polyalkylène glycol sont coiffées, on peut utiliser le même groupement extrémal ou une combinaison de deux groupements distincts. When the two hydroxyl ends of the polyalkylene glycol are capped, the same extremal group or a combination of two distinct groups can be used.
Le PAG B peut être synthétisé selon des méthodes connues de l’homme du métier. De préférence, il peut être obtenu par polymérisation à partir d’un initiateur de type diol ou autres.
De préférence, un PAG B selon l’invention présente une masse moléculaire en poids Mw supérieure ou égale à 4000 g/mol, en particulier supérieure ou égale à 5000 g/mol et plus particulièrement comprise entre 5000 et 15000 g/mol. PAG B can be synthesized according to methods known to those skilled in the art. Preferably, it can be obtained by polymerization from an initiator of the diol or other type. Preferably, a PAG B according to the invention has a molecular mass by weight M w greater than or equal to 4000 g / mol, in particular greater than or equal to 5000 g / mol and more particularly between 5000 and 15000 g / mol.
Le point éclair du PAG B est de préférence supérieur ou égale à 200 °C. The flash point of PAG B is preferably greater than or equal to 200 ° C.
Des PAG B, satisfaisant les critères précités et pouvant être mis en œuvre dans une composition lubrifiante selon l’invention, peuvent être disponibles dans le commerce. On peut citer par exemples les huiles commercialisées sous les références Synalox® 40D700, Bréox® 50A1000, Bréox® 60W1000, Emkarox® VG 1050W. PAG B, satisfying the aforementioned criteria and which can be used in a lubricating composition according to the invention, can be commercially available. These include for example the oils sold under the references SYNALOX ® 40D700, Breox ® 50A1000, Breox ® 60W1000, Emkarox ® VG 1050W.
L’huile commercialisée sous la référence Synalox® 40D700 est particulièrement appropriée. The oil marketed under the reference Synalox ® 40D700 is particularly suitable.
Le ou les polyalkylènes glycols B peuvent être mis en œuvre à raison de 1 % à 30 % en masse, par rapport à la masse totale de la composition lubrifiante, en particulier de 1 à 15 % en masse et plus préférentiellement de 3 à 10 % en masse. The polyalkylene glycol (s) B can be used in an amount of 1% to 30% by mass, relative to the total mass of the lubricating composition, in particular from 1 to 15% by mass and more preferably from 3 to 10% en masse.
Les polyalkylènes A et B présentent d’excellentes propriétés de miscibilité entre eux. Polyalkylenes A and B exhibit excellent properties of miscibility with each other.
De préférence, les polyalkylènes glycols A et B sont mis en œuvre dans une composition lubrifiante selon l’invention dans un rapport massique PAG A/PAG B allant de 60/10 à 99/1, en particulier de 70/30 à 98/2 et plus préférentiellement de 85/15 à 95/5. Preferably, the polyalkylene glycols A and B are used in a lubricating composition according to the invention in a PAG A / PAG B mass ratio ranging from 60/10 to 99/1, in particular from 70/30 to 98/2 and more preferably from 85/15 to 95/5.
La composition lubrifiante selon l’invention peut comprendre éventuellement une ou plusieurs huiles de base annexes, en quantités minoritaires par rapport aux PAG A et B. The lubricating composition according to the invention may optionally comprise one or more additional base oils, in minor amounts compared to PAG A and B.
Ainsi, de préférence, le mélange des polyalkylènes glycols A et B représente plus de 95 % massique, en particulier plus de 98 % massique, de la masse totale des huiles de base d’une composition lubrifiante. Thus, preferably, the mixture of polyalkylene glycols A and B represents more than 95% by mass, in particular more than 98% by mass, of the total mass of the base oils of a lubricating composition.
Selon un mode de réalisation particulièrement préférées, une composition lubrifiante selon l’invention est exempte d’huile de base autre que lesdits polyalkylènes glycols A et B selon l’invention.
Composition lubrifiante According to a particularly preferred embodiment, a lubricating composition according to the invention is free from base oil other than said polyalkylene glycols A and B according to the invention. Lubricating composition
Selon un mode de réalisation particulièrement préféré, le mélange desdits polyalkylènes glycols A et B représente plus de 70 % massique, en particulier plus de 80 % massique, notamment plus de 90 % et en particulier plus de 95 % massique, de la masse totale de la composition lubrifiante selon rinvention. According to a particularly preferred embodiment, the mixture of said polyalkylene glycols A and B represents more than 70% by mass, in particular more than 80% by mass, in particular more than 90% and in particular more than 95% by mass, of the total mass of the lubricating composition according to the invention.
Une composition lubrifiante mise en œuvre selon l’invention peut comprendre, outre lesdits polyalkylène glycols A et B selon l’invention, un ou plusieurs additifs. A lubricating composition used according to the invention may comprise, in addition to said polyalkylene glycols A and B according to the invention, one or more additives.
Les additifs peuvent être notamment choisis parmi les additifs anti-usure et extrême pression, les agents d’onctuosité, les antioxydants, les capteurs d’acidité et les agents anti-mousse. The additives can be chosen in particular from antiwear and extreme pressure additives, lubricating agents, antioxidants, acid scavengers and anti-foaming agents.
Additifs anti-usure/extrême pression Anti-wear / extreme pressure additives
De manière avantageuse, une composition lubrifiante selon l’invention comprend au moins un additif anti-usure ou extrême pression. Advantageously, a lubricating composition according to the invention comprises at least one anti-wear or extreme pressure additive.
A titre d’additifs anti-usure et extrême pression, on peut citer les agents à base de phosphore, tels que les phosphates, les acides phosphoriques, les phosphites, les phosphites acides et leurs sels d’amine. By way of antiwear and extreme pressure additives, there may be mentioned phosphorus-based agents, such as phosphates, phosphoric acids, phosphites, acid phosphites and their amine salts.
Parmi les additifs extrême pression et anti-usure à base de phosphore, on peut notamment citer les esters de phosphate tels que le phosphate de tricrésyle, le phosphate de trithiophényle, le phosphite de tris(nonylphényle), le dioleylhydrogène phosphite, le phosphite de 2-éthylhexyldiphényle, etc. Among the extreme pressure and anti-wear additives based on phosphorus, mention may in particular be made of phosphate esters such as tricresyl phosphate, trithiophenyl phosphate, tris (nonylphenyl) phosphite, dioleylhydrogen phosphite, phosphite of 2 -ethylhexyldiphenyl, etc.
Les additifs extrême pression peuvent encore être des sels métalliques d’acide carboxylique, en particulier des sels métalliques d’acides carboxyliques ayant de 3 à 60 atomes de carbone, en particulier de 3 à 30 atomes de carbones et plus particulièrement de 12 à 30 atomes de carbone. Il peut encore s’agir de de sels métalliques de dimères et trimères d’acides aliphatiques, et d’acides dicarboxyliques ayant de 3 à 30 atomes de carbone. The extreme pressure additives can also be metal salts of carboxylic acids, in particular metal salts of carboxylic acids having from 3 to 60 carbon atoms, in particular from 3 to 30 carbon atoms and more particularly from 12 to 30 atoms. of carbon. They can also be metal salts of dimers and trimers of aliphatic acids, and dicarboxylic acids having 3 to 30 carbon atoms.
Le sel métallique peut être plus particulièrement un sel de métal alcalin ou alcalino-terreux, en particulier de métal alcalin.
D’autres additifs extrême pression sont encore envisageables, tels que les additifs extrême pression à base de souffre, comme par exemple les graisses sulfurées, les acides aliphatiques sulfurés, les esters sulfurés, les oléfines sulfurées, les dihydrocarvyle polysulfides, les thiocarbamates, les thioterpènes et les thiodipropionates de dialkyle. The metal salt can more particularly be an alkali metal or alkaline earth metal salt, in particular an alkali metal salt. Other extreme pressure additives can also be envisaged, such as extreme pressure additives based on sulfur, such as, for example, sulphurous fats, sulphurous aliphatic acids, sulphurous esters, sulphurous olefins, dihydrocarvyl polysulphides, thiocarbamates, thioterpenes and dialkyl thiodipropionates.
Selon un mode de réalisation particulièrement préféré, l’additif anti usure/extrême pression est un additif phosphaté. According to a particularly preferred embodiment, the antiwear / extreme pressure additive is a phosphate additive.
De préférence, la composition lubrifiante selon l’invention comprend au moins un additif anti-usure/extrême pression choisi parmi les phosphates d’amine. Preferably, the lubricating composition according to the invention comprises at least one antiwear / extreme pressure additive chosen from amine phosphates.
Les phosphates d’amine peuvent être plus particulièrement des phosphates d’amine d’alkyle en Cio à Cis de formule : The amine phosphates can more particularly be C10 to C18 alkyl amine phosphates of the formula:
[Chem 1] [Chem 1]
R- O R- O
/P - 0(NH3 R2) / P - 0 (NH 3 R 2 )
1 / 1 /
R - O R - O
[Chem 2]
[Chem 2]
où R1 est un alkyl en Ci à Cs et R2 est un alkyl en Cio à Cis. where R 1 is C1-C8 alkyl and R 2 is C10-C18 alkyl.
De tels phosphates d’amine sont par exemple commercialisés sous la référence VANLUB® 672 par la Société Vanderbilt ou IRGALUBE® 349 par la Société BASF. Such amine phosphates are for example marketed under the reference VANLUB 672 ® by Vanderbilt or Irgalube ® 349 by BASF Corporation.
Les inventeurs ont découvert que la mise en œuvre d’un additif anti-usure de type phosphate d’amine permet, comparativement à d’autres additifs anti-usure/extrême- pression phosphorés tels que des esters phosphate, d’améliorer de manière significative la stabilité thermique de la composition lubrifiante en présence du fluide réfrigérant mis en œuvre à une température de l’ordre de 175 °C. Le ou les additifs anti-usure et extrême-pression, de préférence de type phosphate d’amine, peuvent être mis en œuvre à raison de 0,001 à 3 % massique, par rapport à la masse totale de la composition, de préférence de 0,005 à 1 % massique et plus particulièrement de 0,05 à 0,5 % massique.
Additifs anti-oxydant The inventors have discovered that the use of an anti-wear additive of amine phosphate type makes it possible, compared to other anti-wear / extreme-pressure phosphorus additives such as phosphate esters, to significantly improve the thermal stability of the lubricating composition in the presence of the coolant used at a temperature of the order of 175 ° C. The anti-wear and extreme pressure additive (s), preferably of amine phosphate type, can be used in an amount of 0.001 to 3% by mass, relative to the total mass of the composition, preferably from 0.005 to 1% by weight and more particularly from 0.05 to 0.5% by weight. Antioxidant additives
De manière avantageuse, la composition lubrifiante selon l’invention comprend au moins un additif antioxydant. Advantageously, the lubricating composition according to the invention comprises at least one antioxidant additive.
Les additifs antioxydants peuvent être par exemple des additifs antioxydants phénoliques ou des additifs antioxydants à base d’amine, tels que le phényl-a- napththylamine ou le N,N’-diphényl-p-phénylènediamine. Antioxidant additives can be, for example, phenolic antioxidant additives or amine-based antioxidant additives, such as phenyl-a-napthylamine or N, N-diphenyl-p-phenylenediamine.
De préférence, la composition lubrifiante comprend au moins un additif antioxydant phénolique. Preferably, the lubricating composition comprises at least one phenolic antioxidant additive.
Les antioxydants phénoliques peuvent être plus particulièrement choisis parmi le 2,6-di-tert-butylphénol (tel que commercialisé sous la référence Irganox® 140 par Ciba- Geigy Corporation), le 2,2'-méthylène-bis-(4,6-di-tert-butylphénol), le 1,6-hexaméthylène- bis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate) (tel que commercialisé sous la référence Irganox® L109 par Ciba-Geigy Corporation), les esters d’isoalkyle en Cio -Ci4 et de l’acideThe phenolic antioxidants can be more particularly chosen from 2,6-di-tert-butylphenol (as sold under the reference Irganox® 140 by Ciba-Geigy Corporation), 2,2'-methylene-bis- (4,6 -di-tert-butylphenol), 1,6-hexamethylene-bis (3,5-di-tert-butyl-4-hydroxyhydrocinnamate) (as marketed under the reference Irganox ® L109 by Ciba-Geigy Corporation), esters C10 -Ci4 isoalkyl and acid
3.5-bis(l,l-diméthyléthyl)-4-hydroxyphenyl)méthyl)thio)acétique (tels que commercialisés sous la référence Irganox® L118 par Ciba-Geigy Corporation), les esters d’alkyle en C7 à C9 et de l’acide 3,5-di-tert-butyl-4-hydroxyhydrocinnamic (tels que commercialisés sous la référence Irganox® L135 par Ciba-Geigy Corporation), le tétrakis-(3-(3,5-di-tert-butyl-4- hydroxyphényl)-propionyloxyméthyl)méthane (tel que commercialisé sous la référence Irganox® 1010 par Ciba-Geigy Corporation, le thiodiéthylene bis(3,5-di-tert-butyl-4- hydroxyhydrocinnamate (tel que commercialisé sous la référence Irganox® 1035 par Ciba- Geigy Corporation), le 3,5-di-tert-butyl-4-hydroxyhydrocinnamate d’octadécyle (par exemple, commercialisé sous la référence Irganox® 1076 par Ciba-Geigy Corporation) et la3.5-bis (1,1-dimethylethyl) -4-hydroxyphenyl) methyl) thio) acetic (as marketed under the reference Irganox® L118 by Ciba-Geigy Corporation), esters of C7 to C9 alkyl and 3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid (as marketed under the reference Irganox® L135 by Ciba-Geigy Corporation), tetrakis- (3- (3,5-di-tert-butyl-4- hydroxyphenyl) -propionyloxymethyl) methane (as marketed under the reference Irganox® 1010 by Ciba-Geigy Corporation, thiodiethylene bis (3,5-di-tert-butyl-4-hydroxyhydrocinnamate (as marketed under the reference Irganox® 1035 by Ciba- Geigy Corporation), octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate (for example, sold under the reference Irganox® 1076 by Ciba-Geigy Corporation) and
2.5-di-tert-butyl-hydroquinone. 2.5-di-tert-butyl-hydroquinone.
De préférence, les antioxydants phénoliques sont choisis parmi les esters d’alkyle en C7 à C9 et de l’acide 3,5-di-tert-butyl-4-hydroxyhydrocinnamic, par exemple disponibles commercialement sous la référence Irganox® L135 de Ciba-Geigy Corporation. Preferably, the phenolic antioxidants are chosen from esters of C7 to C9 alkyl and 3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid, for example commercially available under the reference Irganox® L135 from Ciba- Geigy Corporation.
Une composition lubrifiante selon l’invention peut comprendre le ou lesdits additifs antioxydants, de préférence de type phénolique, à raison de 0,01 à 5 % massique, par rapport à la masse totale de ladite composition, de préférence de 0,05 à 3 % massique et plus particulièrement de 0,1 à 1 % massique.
Selon un mode de réalisation particulièrement préféré, une composition lubrifiante selon l’invention comprend ainsi, outre lesdits polyalkylène glycols A et B, en particulier tels que décrits précédemment : A lubricating composition according to the invention may comprise the said antioxidant additive (s), preferably of the phenolic type, in an amount of 0.01 to 5% by weight, relative to the total weight of said composition, preferably from 0.05 to 3. % by mass and more particularly from 0.1 to 1% by mass. According to a particularly preferred embodiment, a lubricating composition according to the invention thus comprises, in addition to said polyalkylene glycols A and B, in particular as described above:
- au moins un additif anti-usure/extrême pression de type phosphate d’amine ; et/ou - at least one antiwear / extreme pressure additive of amine phosphate type; and or
- au moins un antioxydant phénolique, en particulier de type ester d’alkyle en C7 à C9 et d’ aci de 3 , 5 -di -tert-buty 1 -4 -hy droxy hy drocinnami c . - at least one phenolic antioxidant, in particular of the C7 to C9 alkyl ester type and of 3, 5 -di -tert-buty 1 -4 -hy droxy hy drocinnami c.
De manière particulièrement avantageuse, les inventeurs ont constaté que la présence combinée d’au moins un additif anti-usure/extrême pression de type phosphate d’amine et d’au moins un antioxydant phénolique, en sus de la combinaison des polyalkylènes glycols A et B selon l’invention, permet d’optimiser la stabilité thermique de la composition lubrifiante selon l’invention. Une telle composition présente avantageusement une viscosité stable et une absence de dégradation (oxydation) chimique, à des températures élevées de l’ordre de 175°C. In a particularly advantageous manner, the inventors have observed that the combined presence of at least one antiwear / extreme pressure additive of amine phosphate type and of at least one phenolic antioxidant, in addition to the combination of polyalkylene glycols A and B according to the invention makes it possible to optimize the thermal stability of the lubricating composition according to the invention. Such a composition advantageously exhibits a stable viscosity and an absence of chemical degradation (oxidation) at high temperatures of the order of 175 ° C.
Ainsi, selon un mode de réalisation particulièrement préféré, la composition lubrifiante selon l’invention comprend, voire consiste en : Thus, according to a particularly preferred embodiment, the lubricating composition according to the invention comprises, or even consists of:
- de 75 à 99 % massique d’au moins un polyalkylène glycol A tels que défini précédemment ; - from 75 to 99% by mass of at least one polyalkylene glycol A as defined above;
- de 1 à 15 % massique d’au moins un polyalkylène glycol B tel que défini précédemment ;- from 1 to 15% by mass of at least one polyalkylene glycol B as defined above;
- éventuellement de 0,001 à 1 % massique d’au moins un additif anti-usure/extrême pression de type phosphate d’amine ; et - optionally from 0.001 to 1% by mass of at least one anti-wear / extreme pressure additive of amine phosphate type; and
- éventuellement de 0,05 à 3 % massique d’au moins un antioxydant phénolique, la somme des constituants étant égale à 100 %, et les pourcentages étant exprimés par rapport à la masse totale de la composition lubrifiante. - optionally from 0.05 to 3% by mass of at least one phenolic antioxidant, the sum of the constituents being equal to 100%, and the percentages being expressed relative to the total mass of the lubricating composition.
Selon un mode de réalisation particulier, la composition lubrifiante selon l’invention comprend, voire consiste en : According to a particular embodiment, the lubricating composition according to the invention comprises, or even consists of:
- de 75 à 98,5 % massique d’au moins un polyalkylène glycol A tels que défini précédemment ; - from 75 to 98.5% by mass of at least one polyalkylene glycol A as defined above;
- de 1 à 15 % massique d’au moins un polyalkylène glycol B tel que défini précédemment ; - from 1 to 15% by mass of at least one polyalkylene glycol B as defined above;
- de 0,001 à 1 % massique d’au moins un additif anti-usure/extrême pression de type phosphate d’amine ; et - 0.001 to 1% by mass of at least one antiwear / extreme pressure additive of amine phosphate type; and
- de 0,05 à 3 % massique d’au moins un antioxydant phénolique, - from 0.05 to 3% by mass of at least one phenolic antioxidant,
la somme des constituants étant égale à 100 %, et les pourcentages étant exprimés par rapport à la masse totale de la composition lubrifiante.
D’autres additifs peuvent être éventuellement présents dans la composition lubrifiante selon l’invention. the sum of the constituents being equal to 100%, and the percentages being expressed relative to the total mass of the lubricating composition. Other additives may optionally be present in the lubricating composition according to the invention.
En particulier, elle peut comprendre un ou plusieurs additifs de lubrifiance ou additifs d'onctuosité, comme par exemple choisi parmi les acides monocarboxyliques aliphatiques saturés et insaturés tels que l’acide stéarique et l’acide oléique, les acides aliphatiques polymérisés tels que les acides dimères et les acides dimères hydrogénés, les acides hydroxyaliphatiques tels que l’acide ricinoléique et l’acide 12-hydroxy stéarique, les alcools monohydriques aliphatiques saturés et insaturés tels que l’alcool laurylique et l’alcool oléylique ; les monoamines aliphatiques saturés et insaturés tels que la stéarylamine et l’oleylamine ; les amides d’acide monocarboxylique aliphatique saturé et insaturé tels que l’amide d’acide laurique et l’amide d’acide oléique, et les esters partiels d’alcool polyhydriques tels que la glycérine et le sorbitol, et les acides monocarboxyliques aliphatiques saturés ou insaturés. In particular, it may comprise one or more lubricity additives or lubricity additives, such as for example chosen from saturated and unsaturated aliphatic monocarboxylic acids such as stearic acid and oleic acid, polymerized aliphatic acids such as acids dimers and hydrogenated dimer acids, hydroxyaliphatic acids such as ricinoleic acid and 12-hydroxy stearic acid, saturated and unsaturated aliphatic monohydric alcohols such as lauryl alcohol and oleyl alcohol; saturated and unsaturated aliphatic monoamines such as stearylamine and oleylamine; saturated and unsaturated aliphatic monocarboxylic acid amides such as lauric acid amide and oleic acid amide, and polyhydric alcohol partial esters such as glycerin and sorbitol, and saturated aliphatic monocarboxylic acids or unsaturated.
Le ou les additifs de lubrifiance ou additifs d'onctuosité peuvent être présents à raison de 0,01 à 10 % massique, en particulier de 0, 1 à 5 % massique par rapport à la masse totale de ladite composition. The lubricity additive (s) or lubricity additives may be present in an amount of 0.01 to 10% by mass, in particular from 0.1 to 5% by mass relative to the total mass of said composition.
Selon un mode de réalisation particulier, une composition lubrifiante selon l’invention peut encore comprendre un ou plusieurs composés « capteurs d’acide », comme par exemple choisis parmi les éthers de glycidyle et de phényle, les éthers d’alkyle et de glycidyle, les éther d’alkylène glycol et de glycidyle, les esters de phényle et de glycidyle, les esters d’alkényle et de glycidyle, le cyclohexène oxyde, Ga-oléfmoxyde et les composés époxy tels que l’huile de soja époxydée. According to a particular embodiment, a lubricating composition according to the invention may also comprise one or more “acid scavenger” compounds, such as, for example, chosen from glycidyl and phenyl ethers, alkyl and glycidyl ethers, alkylene glycol glycidyl ether, phenyl and glycidyl esters, alkenyl and glycidyl esters, cyclohexene oxide, Ga-olefinoxide and epoxy compounds such as epoxidized soybean oil.
De préférence, les additifs « capteurs d’acide » peuvent être choisis parmi les éthers de phényle et de glycidyle, les éthers d’alkyle et de glycidyle, les éthers d’alkylène glycols et de glycidyle, le glycidyl-2,2-diméthyloctanoate, le glycidyl benzoate, le glycidyl- tert-butyl benzoate, le glycidyl acrylate, le glycidyl méthacrylate, le cyclohexène oxyde, et Ga-oléfmoxyde. Preferably, the “acid scavenger” additives can be chosen from phenyl and glycidyl ethers, alkyl and glycidyl ethers, alkylene glycol and glycidyl ethers, glycidyl-2,2-dimethyloctanoate. , glycidyl benzoate, glycidyl-tert-butyl benzoate, glycidyl acrylate, glycidyl methacrylate, cyclohexene oxide, and Ga-olefinoxide.
Chacun des groupes alkyles de l’éther d’alkyle et de glycidyle et le groupe alkylène d’un éther d’alkylène glycol et de glycidyle peut être ramifié, et présente
typiquement de 3 à 30 atomes de carbone, de préférence de 4 à 24 et plus particulièrement de 6 à 16 atomes de carbone. Quant à Ga-oléfmoxyde, elle peut présenter plus particulièrement de 4 à 50 atomes de carbone, en particulier de 4 à 24 et plus particulièrement de 6 à 16 atomes de carbone. Each of the alkyl groups of the alkyl glycidyl ether and the alkylene group of an alkylene glycol glycidyl ether may be branched, and present typically from 3 to 30 carbon atoms, preferably from 4 to 24 and more particularly from 6 to 16 carbon atoms. As for Ga-olefmoxide, it may have more particularly from 4 to 50 carbon atoms, in particular from 4 to 24 and more particularly from 6 to 16 carbon atoms.
Le ou lesdits composés « capteurs d’acide » peuvent être présents à raison de 0,005 à 5 % massique, en particulier de 0,05 à 3 % massique, par rapport à la masse totale de ladite composition lubrifiante. Said compound (s) "acid scavengers" may be present in an amount of 0.005 to 5% by weight, in particular from 0.05 to 3% by weight, relative to the total weight of said lubricating composition.
Une composition lubrifiante selon l’invention peut encore comprendre un ou plusieurs additifs anti-mousse, comme par exemple une huile siliconée, ou une huile siliconé fluorée. A lubricating composition according to the invention can also comprise one or more anti-foam additives, such as, for example, a silicone oil, or a fluorinated silicone oil.
Il est entendu que d’autres additifs connus de l’homme du métier peuvent encore être présents dans une composition lubrifiante selon l’invention, par exemple des désactivateurs de cuivre tel que le N-[N,N’-dialkyl aminométhyljtriazole. It is understood that other additives known to those skilled in the art may also be present in a lubricating composition according to the invention, for example copper deactivators such as N- [N, N-dialkyl aminomethyl triazole.
De manière avantageuse, une composition lubrifiante selon l’invention présente une viscosité cinématique, mesurée à 40 °C (KV40), selon la norme ASTM D445 (ISO 3104) comprise entre 30 et 60 mm2/s, en particulier entre 35 et 60 mm2/s et plus particulièrement entre 40 et 50 mm2/s. Advantageously, a lubricating composition according to the invention has a kinematic viscosity, measured at 40 ° C (KV40), according to the standard ASTM D445 (ISO 3104) of between 30 and 60 mm 2 / s, in particular between 35 and 60 mm 2 / s and more particularly between 40 and 50 mm 2 / s.
La viscosité cinématique, mesurée à 100 °C (KV100), selon la norme ASTM D445 (ISO 3104), d’une composition lubrifiante selon l’invention peut être avantageusement comprise entre 5 et 10 mm2/s, en particulier entre 8 et 10 mm2/s. The kinematic viscosity, measured at 100 ° C (KV100), according to standard ASTM D445 (ISO 3104), of a lubricating composition according to the invention can advantageously be between 5 and 10 mm 2 / s, in particular between 8 and 10 mm 2 / s.
De préférence, une composition lubrifiante selon l’invention présente un indice d’hydroxyle strictement supérieur à 40 mg KOH/g, en particulier compris entre 45 et 70 mgKOH/g. Preferably, a lubricating composition according to the invention has an hydroxyl number strictly greater than 40 mg KOH / g, in particular between 45 and 70 mgKOH / g.
Elle présente de préférence un indice d’acide, mesurée selon la norme ISO 6618, compris entre 0,02 mgKOH/g et 0,2 mgKOH/g, de préférence inférieur à 0, 1 mgKOH/g. It preferably has an acid number, measured according to the ISO 6618 standard, of between 0.02 mgKOH / g and 0.2 mgKOH / g, preferably less than 0.1 mgKOH / g.
De préférence, la teneur en eau de la composition lubrifiante selon l’invention est strictement inférieure à 700 ppm en poids. Preferably, the water content of the lubricating composition according to the invention is strictly less than 700 ppm by weight.
Par ailleurs, elle présente avantageusement un point éclair strictement supérieur à 200 °C. Furthermore, it advantageously has a flash point strictly greater than 200 ° C.
UTILISATION DANS UN SYSTEME REFRIGERANT
Comme évoqué précédemment, une composition lubrifiante selon l’invention s’avère particulièrement adaptée pour son utilisation en association avec un fluide réfrigérant, dans un système réfrigérant, en particulier dans un système de climatisation automobile. USE IN A REFRIGERANT SYSTEM As mentioned above, a lubricating composition according to the invention proves to be particularly suitable for its use in combination with a refrigerating fluid, in a refrigerating system, in particular in an automobile air conditioning system.
L’invention concerne ainsi, selon un autre de ses aspects, une composition de transfert de chaleur, pour un système réfrigérant comprenant un circuit de compression de gaz, en particulier pour un système de climatisation automobile, comprenant : The invention thus relates, according to another of its aspects, to a heat transfer composition, for a refrigerant system comprising a gas compression circuit, in particular for an automotive air conditioning system, comprising:
- une composition lubrifiante telle que définie précédemment ; et - a lubricating composition as defined above; and
- un fluide réfrigérant à base de composés hydroflu orocarbonés, en particulier à base de 1, 1,1,2-tétrafluoroéthane (R134a) et/ou de 2,3,3,3-tétrafluoropropène (HFO-1234yf). - a refrigerating fluid based on orocarbon hydrofluoric compounds, in particular based on 1, 1,1,2-tetrafluoroethane (R134a) and / or 2,3,3,3-tetrafluoropropene (HFO-1234yf).
Elle vise encore rutilisation d’une telle composition de transfert de chaleur dans un système réfrigérant comprenant un circuit de compression de gaz, tel qu’un gaz réfrigérant. It also relates to the use of such a heat transfer composition in a refrigerant system comprising a gas compression circuit, such as a refrigerant gas.
La proportion de composition lubrifiante devant être utilisée en combinaison avec le fluide réfrigérant dépend du type d’installation concernée. En effet, la quantité totale d’huile de lubrification dans l’installation dépend principalement de la nature du compresseur, tandis que la quantité totale de fluide réfrigérant dans l’installation dépend principalement des échangeurs et de la tuyauterie. The proportion of lubricating composition to be used in combination with the coolant depends on the type of installation concerned. Indeed, the total amount of lubricating oil in the installation depends mainly on the nature of the compressor, while the total amount of refrigerant in the installation mainly depends on the exchangers and the piping.
D’une manière générale, la proportion de fluide réfrigérant par rapport à la composition lubrifiante est comprise entre 99/1 et 1/99, en particulier entre 95/5 et 5/95. In general, the proportion of coolant relative to the lubricating composition is between 99/1 and 1/99, in particular between 95/5 and 5/95.
Le fluide réfrigérant est plus particulièrement à base de composés de transfert de chaleur choisis parmi les composés hydrofluorocarbonés saturés ou insaturés, et leurs mélanges. The refrigerant fluid is more particularly based on heat transfer compounds chosen from saturated or unsaturated hydrofluorocarbon compounds, and mixtures thereof.
Le fluide réfrigérant peut être binaire (consistant en deux composés de transfert de chaleur) ou ternaire (consistant en trois composés de transfert de chaleur) ou quaternaires (consistant en quatre composés de transfert de chaleur. The refrigerant can be binary (consisting of two heat transfer compounds) or ternary (consisting of three heat transfer compounds) or quaternary (consisting of four heat transfer compounds.
Les composés hydrofluorocarbonés répondent d’une manière générale à la formule (A) suivante : Hydrofluorocarbon compounds generally correspond to the following formula (A):
[Chem 3] CpFrHs (A) [Chem 3] C p F r H s (A)
dans laquelle : in which :
p représente un entier compris entre 2 et 6 ;
r représente un entier compris entre 1 et 12 ; et p represents an integer between 2 and 6; r represents an integer between 1 and 12; and
s représente un entier compris entre 0 et 11. s represents an integer between 0 and 11.
Les composés hydrofluorocarbonés insaturés peuvent être plus particulièrement choisis parmi les isomères du pentafluoropropène, en particulier le 3,3,3-trifluoropropène, le 2,3,3,3-tétrafluoropropène, le 1,2,3,3,3-pentafluoropropène et le 2, 3,3,3- tétrafluoropropène. The unsaturated hydrofluorocarbon compounds can be more particularly chosen from isomers of pentafluoropropene, in particular 3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene, 1,2,3,3,3-pentafluoropropene and 2, 3,3,3-tetrafluoropropene.
Selon un mode de réalisation particulier, le fluide réfrigérant comprend, voire est formée, du 2,3,3,3-tétrafluoropropène (HFO-1234yf). According to a particular embodiment, the refrigerant fluid comprises, or even is formed, 2,3,3,3-tetrafluoropropene (HFO-1234yf).
Les composés hydrofluorocarbonés saturés peuvent être plus particulièrement choisis parmi les composés fluorés d’alcanes comprenant de 1 à 4 atomes de carbones, de préférence de méthane ou d’éthane, tels que le trifluorométhane, le difluorométhane, le 1, 1- difluoroéthane, le 1,1,1-trifluoroéthane, le 1, 1,2-trifluoroéthane, le 1,1, 1,2-tétrafluoroéthane, le 1, 1,2,2-tétrafluoroéthane et le 1, 1,1,2,2,-pentafluoroéthane. The saturated hydrofluorocarbon compounds can be more particularly chosen from fluorinated alkane compounds comprising from 1 to 4 carbon atoms, preferably methane or ethane, such as trifluoromethane, difluoromethane, 1, 1-difluoroethane, 1,1,1-trifluoroethane, 1, 1,2-trifluoroethane, 1,1, 1,2-tetrafluoroethane, 1, 1,2,2-tetrafluoroethane and 1, 1,1,2,2, -pentafluoroethane.
Selon un mode de réalisation particulier, le fluide réfrigérant comprend, voire est formé, du 1,1, 1,2-tétrafluoroéthane (RI 34a). According to a particular embodiment, the refrigerant fluid comprises, or even is formed, 1,1, 1,2-tetrafluoroethane (RI 34a).
Le fluide réfrigérant considéré selon l’invention peut encore comprendre un ou plusieurs composés de transfert de chaleur supplémentaires, par exemple choisis parmi les hydrocarbures, les hydrofluorocarbures, les éthers, les hydrofluoroéthers et les fluorooléfmes. The refrigerant under consideration according to the invention may also comprise one or more additional heat transfer compounds, for example chosen from hydrocarbons, hydrofluorocarbons, ethers, hydrofluoroethers and fluoro-oolfins.
Selon une variante de réalisation particulièrement préférée, le fluide réfrigérant est formé à plus de 90 % massique, notamment à plus de 95 % massique et plus particulièrement à plus de 99 % massique, de composés hydrofluorocarbonés saturés et/ou insaturés, en particulier tels que définis précédemment. According to a particularly preferred variant embodiment, the refrigerant fluid is formed at more than 90% by mass, in particular at more than 95% by mass and more particularly at more than 99% by mass, of saturated and / or unsaturated hydrofluorocarbon compounds, in particular such as previously defined.
De préférence, le fluide réfrigérant est à base de 1, 1,1,2-tétrafluoroéthane (R134a), de 2,3,3,3-tétrafluoropropène (HFO-1234yf) ou d’un mélange de R134a et HFO- 1234yf. Preferably, the refrigerant fluid is based on 1,1,2-tetrafluoroethane (R134a), 2,3,3,3-tetrafluoropropene (HFO-1234yf) or a mixture of R134a and HFO-1234yf.
En particulier, le fluide réfrigérant considéré selon l’invention peut consister en du R134a, du HFO-1234yf ou un mélange de R134a et de HFO-1234yf.
Une composition lubrifiante selon l’invention est plus particulièrement destinée à être mise en œuvre, avec un réfrigérant à base de R134a et/ou HFO-1234yf, au niveau d’une installation comprenant un circuit de compression de vapeur. In particular, the refrigerant fluid considered according to the invention can consist of R134a, HFO-1234yf or a mixture of R134a and HFO-1234yf. A lubricating composition according to the invention is more particularly intended to be used, with a refrigerant based on R134a and / or HFO-1234yf, in an installation comprising a vapor compression circuit.
Typiquement, le circuit de compression de vapeur comprend au moins un évaporateur, un compresseur, un condenseur et un détendeur, ainsi que des lignes de transport de fluide entre ces éléments. L’évaporateur et le condenseur comprennent un échangeur de chaleur permettant un échange de chaleur entre le fluide de transfert de chaleur et un autre fluide ou corps. Typically, the vapor compression circuit comprises at least one evaporator, one compressor, one condenser and one expansion valve, as well as fluid transport lines between these elements. The evaporator and the condenser include a heat exchanger allowing heat exchange between the heat transfer fluid and another fluid or body.
Le circuit de compression de vapeur fonctionne selon un cycle classique de compression de gaz. Le cycle comprend le changement d’état du fluide de transfert de chaleur d’une phase liquide (ou diphasique liquide/gazeuse) vers une phase gazeuse à une pression relativement faible, puis la compression du fluide en phase gazeuse jusqu’à une pression relativement élevée, le changement d’état (condensation) du fluide de transfert de chaleur de la phase gazeuse vers la phase liquide à une pression relativement élevée, et la réduction de la pression pour recommencer le cycle. The vapor compression circuit operates according to a conventional gas compression cycle. The cycle involves changing the state of the heat transfer fluid from a liquid (or two-phase liquid / gas) phase to a gas phase at a relatively low pressure, then compressing the gas phase fluid to a relatively low pressure. high, the change of state (condensation) of the heat transfer fluid from the gas phase to the liquid phase at a relatively high pressure, and the reduction in pressure to restart the cycle.
Selon un mode de réalisation particulièrement préféré, la composition lubrifiante selon l’invention est destinée à un dispositif de climatisation, et plus particulièrement à un dispositif de climatisation automobile. According to a particularly preferred embodiment, the lubricating composition according to the invention is intended for an air conditioning device, and more particularly for an automobile air conditioning device.
De préférence, elle est destinée à un compresseur de climatisation automobile, en particulier pour un compresseur à plateaux oscillants ou un compresseur électrique à spirales. Preferably, it is intended for an automobile air conditioning compressor, in particular for an oscillating plate compressor or an electric scroll compressor.
Ainsi, selon encore un autre de ses aspects, l’invention concerne un compresseur d’un système de climatisation automobile mettant en œuvre une composition lubrifiante selon l’invention. Thus, according to yet another of its aspects, the invention relates to a compressor of an automotive air conditioning system using a lubricating composition according to the invention.
Le compresseur peut être entraîné par un moteur électrique ou thermique ou par une turbine à gaz (par exemple, alimentée par les gaz d’échappement d’un véhicule), ou par engrenage. The compressor can be driven by an electric or thermal motor or by a gas turbine (for example, powered by vehicle exhaust gases), or by gears.
L’invention va maintenant être décrite au moyen de l’exemple suivant, donné à titre illustratif et non limitatif de l’invention.
Exemples The invention will now be described by means of the following example, given by way of illustration and without limitation of the invention. Examples
Exemple 1 : Préparation d’une composition lubrifiante selon l’invention Example 1: Preparation of a lubricating composition according to the invention
Une composition lubrifiante conforme à l’invention a été préparée par simple mélange, à température ambiante, des composants suivants, dans les proportions massiques indiquées dans le tableau 1 suivant. A lubricating composition in accordance with the invention was prepared by simple mixing, at room temperature, of the following components, in the proportions by weight indicated in Table 1 below.
[Tableau 1] [Table 1]
Le PAG A mis en œuvre est un copolymère d’oxyde de propylène-oxyde d’éthylène, formé à plus de 97 % massique d’oxyde de propylène (KV100 =7,98 mm2/s ; KV40 = 39,95 mm2/s, indice d’hydroxyle (ASTM E1899-08) = 61,4 mgKOH/g). The PAG A used is a copolymer of propylene oxide-ethylene oxide, formed at more than 97% by mass of propylene oxide (KV100 = 7.98 mm 2 / s; KV40 = 39.95 mm 2 / s, hydroxyl number (ASTM E1899-08) = 61.4 mgKOH / g).
Les PAG B est un copolymère d’oxyde de propylène et d’oxyde d’éthylène (OP/OE 4/6 massique) (KV100 = 178 mm2/s, KV40 = 1050 mm2/s, indice d’hydroxyle = 59,6 mgKOH/g). PAG B is a copolymer of propylene oxide and ethylene oxide (OP / OE 4/6 by mass) (KV100 = 178 mm 2 / s, KV40 = 1050 mm 2 / s, hydroxyl number = 59 , 6 mgKOH / g).
L’agent antioxydant est un composé phénolique. The antioxidant is a phenolic compound.
L’ agent anti-usure/extrême-pression est une amine phosphate. The antiwear / extreme pressure agent is an amine phosphate.
Les caractéristiques de la composition ainsi préparée sont présentées dans le tableau 2 suivant. [Tableau 2] The characteristics of the composition thus prepared are presented in Table 2 below. [Table 2]
Exemple 2 : Evaluation des propriétés de stabilité thermique en présence du réfrigérant HFO-1234yf Example 2: Evaluation of thermal stability properties in the presence of HFO-1234yf refrigerant
Deux compositions lubrifiantes ont été évaluées : Two lubricating compositions were evaluated:
- une composition lubrifiante II conforme à l’invention, associant un PAG A conforme à l’invention, noté PAG A(1) présentant les propriétés suivantes : indice d’hydroxyle = 57 mgKOH/g ; KV40 = 39,96 mm2/s; KV100=7,97 mm2/s ; et un PAG B selon l’invention présentant les propriétés suivantes : KV40=1000 mm2/s et KV100 = 178,0 mm2/s ; et a lubricating composition II in accordance with the invention, combining a PAG A in accordance with the invention, denoted PAG A (1), exhibiting the following properties: hydroxyl number = 57 mgKOH / g; KV40 = 39.96 mm 2 / s; KV100 = 7.97mm 2 / s; and a PAG B according to the invention having the following properties: KV40 = 1000 mm 2 / s and KV100 = 178.0 mm 2 / s; and
- une composition lubrifiante Cl commerciale comprenant un PAG A conforme à l’invention, noté PAG A(2), présentant les propriétés suivantes : indice d’hydroxyle = 55 mgKOH/g ; KV40 = 39,96 mm2/s; KV100=7,97 mm2/s, mais dépourvue de PAG B. - A commercial lubricating composition C1 comprising a PAG A in accordance with the invention, denoted PAG A (2) , exhibiting the following properties: hydroxyl number = 55 mgKOH / g; KV40 = 39.96 mm 2 / s; KV100 = 7.97 mm 2 / s, but without PAG B.
Les deux types de polyalkylène glycol utilisés dans le cadre des présents exemples sont : The two types of polyalkylene glycol used in the context of the present examples are:
PAG A(1) et PAG A(2) : polyalkylène glycols formés d’au moins 96 % massique d’unités oxypropylène ; dont les extrémités sont non coiffées, et synthétisés à partir de l’initiateur méthanol, par exemple commercialisés sous la référence Konlube® RF 240 YF. PAG A (1) and PAG A (2) : polyalkylene glycols formed from at least 96% by mass of oxypropylene units; whose ends are uncapped, and synthesized from the initiator methanol, for example, under the reference Konlube ® RF 240 YF.
PAG B : copolymère statistique d’oxyde d’éthylène (60 % massique) et d’oxyde de propylène (40 % massique), synthétisé à partir d’un initiateur de type diol, par exemple commercialisé sous la référence Synalox® 40D700. PAG B: random copolymer of ethylene oxide (60% by mass) and propylene oxide (40 mass%), synthesized from a diol-type initiator, for example sold under the reference SYNALOX 40D700 ®.
Les compositions et les quantités (exprimées en pourcentage massique) sont indiquées dans le tableau 3 suivant. The compositions and the amounts (expressed as a percentage by mass) are indicated in Table 3 below.
[Tableau 3] [Table 3]
Evaluation de la stabilité thermique Evaluation of thermal stability
Les essais de stabilité thermique sont effectués selon la norme ASHRAE 97- 2007 :“Sealed Glass Tube Method to Test the Chemical Stability of Materials for use within Réfrigérant Systems”. The thermal stability tests are performed according to ASHRAE 97-2007: “Sealed Glass Tube Method to Test the Chemical Stability of Materials for use within Refrigerant Systems”.
Plus particulièrement, les systèmes lubrifiant/réfrigérant HFO-1234yf (ratio massique 1 : 1), et des coupons métalliques (Al, Cu et Fe (acier)) en tant que matériaux catalyseurs, sont introduits dans des tubes de verre. Les tubes sont fermés et placés dans un autoclave en acier inoxydable, à 175°C pendant 336 heures. La pression cible à 175 °C est de 35 bars. More particularly, the lubricant / refrigerant systems HFO-1234yf (mass ratio 1: 1), and metal coupons (Al, Cu and Fe (steel)) as catalyst materials, are introduced into glass tubes. The tubes are closed and placed in a stainless steel autoclave at 175 ° C for 336 hours. The target pressure at 175 ° C is 35 bar.
Les lubrifiants sont testés en l’état (« 1) Vieillissement sans eau »), et en ajoutant de l’eau de manière à atteindre 2000 ppm d’eau (« 2) Vieillissement avec 2000 ppm d’eau »). Lubricants are tested as is ("1) Aging without water"), and adding water to reach 2000 ppm of water ("2) Aging with 2000 ppm of water").
La viscosité du lubrifiant est déterminée, avant et après vieillissement, selon la norme DIN 51562-1 en utilisant un viscosimètre Ubbelohde. La variation de viscosité pour chacune des compositions lubrifiantes testées est reportée dans le tableau 4 suivant. The viscosity of the lubricant is determined, before and after aging, according to DIN 51562-1 using a Ubbelohde viscometer. The variation in viscosity for each of the lubricating compositions tested is reported in Table 4 below.
Résultats Results
Les caractéristiques des compositions lubrifiantes testées, ainsi que les résultats du test de stabilité thermique en présence du réfrigérant HFO-1234yf, sont indiqués dans le tableau 4 suivant. The characteristics of the lubricating compositions tested, as well as the results of the thermal stability test in the presence of the HFO-1234yf refrigerant, are shown in Table 4 below.
[Tableau 4] [Table 4]
Les variations de viscosité mesurées à l’issue des essais de vieillissement sont nettement inférieures pour la composition lubrifiante II conforme à l’invention, comparativement à la composition commerciale Cl. The variations in viscosity measured at the end of the aging tests are markedly lower for the lubricating composition II in accordance with the invention, compared to the commercial composition Cl.
La composition lubrifiante selon l’invention, associant un PAG A et un PAG B selon l’invention, présente ainsi des propriétés en termes de stabilité thermique améliorées, comparativement à la composition commerciale Cl ne comprenant pas de PAG B.
The lubricating composition according to the invention, combining a PAG A and a PAG B according to the invention, thus exhibits properties in terms of improved thermal stability, compared to the commercial composition C1 not comprising PAG B.
Claims
1. Composition lubrifiante, destinée à un système réfrigérant comprenant un circuit de compression de gaz, en particulier à un compresseur d’un système de climatisation automobile, comprenant : 1. Lubricating composition, intended for a refrigerant system comprising a gas compression circuit, in particular for a compressor of an automotive air conditioning system, comprising:
- au moins un premier polyalkylène glycol, noté PAG A, présentant un indice d’hydroxyle strictement supérieur à 50 mgKOH/g et une viscosité cinématique mesurée à 100 °C selon la norme ASTM D445, allant de 5 à 10 mm2/s ; et - at least one first polyalkylene glycol, denoted PAG A, exhibiting a hydroxyl number strictly greater than 50 mgKOH / g and a kinematic viscosity measured at 100 ° C. according to the ASTM D445 standard, ranging from 5 to 10 mm 2 / s; and
- au moins un deuxième polyalkylène glycol, noté PAG B, de viscosité cinématique mesurée à 100 °C selon la norme ASTM D445, allant de 100 à 500 mm2/s, - at least one second polyalkylene glycol, noted PAG B, with a kinematic viscosity measured at 100 ° C according to the ASTM D445 standard, ranging from 100 to 500 mm 2 / s,
lesdits polyalkylènes glycols A et B étant présents dans un rapport massique PAG(s) A/PAG(s) B compris entre 60/40 et 99/1. said polyalkylene glycols A and B being present in a PAG (s) A / PAG (s) B mass ratio of between 60/40 and 99/1.
2. Composition lubrifiante selon la revendication précédente, dans laquelle ledit PAG A présentent une viscosité cinématique, mesurée à 100 °C selon la norme ASTM D445, comprise entre 6 et 9 mm2/s. 2. Lubricating composition according to the preceding claim, in which said PAG A have a kinematic viscosity, measured at 100 ° C according to the ASTM D445 standard, of between 6 and 9 mm 2 / s.
3. Composition lubrifiante selon l’une quelconque des revendications précédentes, dans laquelle ledit PAG A comprend au moins des unités oxypropylène, en particulier est formé d’au moins 50 % massique, de préférence d’au moins 75 % massique et plus préférentiellement d’au moins 95% massique, d’unités oxypropylène. 3. Lubricating composition according to any one of the preceding claims, in which said PAG A comprises at least oxypropylene units, in particular is formed of at least 50% by weight, preferably at least 75% by weight and more preferably d. 'at least 95% by mass, of oxypropylene units.
4. Composition lubrifiante selon l’une quelconque des revendications précédentes, dans laquelle ledit PAG A est un copolymère d’oxyde de propylène et d’oxyde d’éthylène, en particulier présentant un ratio massique unités oxypropylène/unités oxy éthylène supérieur ou égal à 1 : 1, de préférence compris entre 2 : 1 et 10 : 1. 4. Lubricating composition according to any one of the preceding claims, in which said PAG A is a copolymer of propylene oxide and of ethylene oxide, in particular having a weight ratio of oxypropylene units / oxyethylene units greater than or equal to 1: 1, preferably between 2: 1 and 10: 1.
5. Composition lubrifiante selon l’une quelconque des revendications précédentes, dans laquelle ledit PAG A présente une seule de ses extrémités hydroxyles coiffée par un groupement alkyle comprenant de 1 à 10 atomes de carbones et comprenant éventuellement un ou plusieurs hétéroatomes, tels que des atomes d’azote, ou avec un groupement fluoroalkyle contenant éventuellement des hétéroatomes tels que l’azote, de préférence par un groupement alkyle ayant entre 1 et 5 atomes de carbone, en particulier entre 1 et 4 atomes carbone. 5. Lubricating composition according to any one of the preceding claims, in which said PAG A has only one of its hydroxyl ends capped by an alkyl group comprising from 1 to 10 carbon atoms and optionally comprising one or more heteroatoms, such as atoms. nitrogen, or with a fluoroalkyl group optionally containing heteroatoms such as nitrogen, preferably with an alkyl group having between 1 and 5 carbon atoms, in particular between 1 and 4 carbon atoms.
6. Composition lubrifiante selon l’une quelconque des revendications précédentes, dans laquelle le ou lesdits PAG A représentent de 60 à 99 % en masse, en particulier de 70 à 99 % en masse, de préférence de 80 à 98 % en masse, plus
préférentiellement de 85 à 95 % en masse, par rapport à la masse totale de ladite composition lubrifiante. A lubricating composition according to any one of the preceding claims, wherein said PAG A (s) represent from 60 to 99% by mass, in particular from 70 to 99% by mass, preferably from 80 to 98% by mass, more preferably from 85 to 95% by mass, relative to the total mass of said lubricating composition.
7. Composition lubrifiante selon l’une quelconque des revendications précédentes, dans laquelle ledit PAG B présente une viscosité cinématique mesurée à 7. A lubricating composition according to any one of the preceding claims, wherein said PAG B has a kinematic viscosity measured at
100 °C, selon la norme ASTM D445 comprise entre 120 et 300 mm2/s, plus particulièrement entre 140 et 200 mm2/s, de préférence entre 150 et 190 mm2/s. 100 ° C, according to standard ASTM D445 between 120 and 300 mm 2 / s, more particularly between 140 and 200 mm 2 / s, preferably between 150 and 190 mm 2 / s.
8. Composition lubrifiante selon l’une quelconque des revendications précédentes, dans laquelle ledit PAG B est un copolymère d’oxyde de propylène et d’oxyde d’éthylène, en particulier formé d’au moins 50 % massique d’unités oxyéthylène, en particulier présentant un ratio molaire unités oxypropylène/unités oxyéthylène allant de 2 :8 à 1 : 1. 8. A lubricating composition according to any one of the preceding claims, in which said PAG B is a copolymer of propylene oxide and of ethylene oxide, in particular formed of at least 50% by mass of oxyethylene units, in particular having a molar ratio of oxypropylene units / oxyethylene units ranging from 2: 8 to 1: 1.
9. Composition lubrifiante selon l’une quelconque des revendications précédentes, dans laquelle le ou lesdits PAG B représentent de 1 % à 30 % en masse, par rapport à la masse totale de la composition lubrifiante, en particulier de 1 à 15 % en masse et plus préférentiellement de 3 à 10 % en masse. 9. A lubricating composition according to any one of the preceding claims, in which said PAG B (s) represent from 1% to 30% by mass, relative to the total mass of the lubricating composition, in particular from 1 to 15% by mass. and more preferably from 3 to 10% by weight.
10. Composition lubrifiante selon l’une quelconque des revendications précédentes, dans laquelle lesdits polyalkylènes glycols A et B représentent plus de 70 % massique, en particulier plus de 80 % massique, notamment plus de 90 % et en particulier plus de 95 % massique, de la masse totale de ladite composition. 10. A lubricating composition according to any one of the preceding claims, in which said polyalkylene glycols A and B represent more than 70% by weight, in particular more than 80% by weight, in particular more than 90% and in particular more than 95% by weight, of the total mass of said composition.
11. Composition lubrifiante selon l’une quelconque des revendications précédentes, ladite composition comprenant en outre au moins un additif anti-usure/extrême pression de type phosphate d’amine, en particulier en une teneur allant de 0,001 à 3 % massique, de préférence de 0,005 à 1 % massique et plus particulièrement de 0,05 à 0,5 % massique. 11. A lubricating composition according to any one of the preceding claims, said composition further comprising at least one antiwear / extreme pressure additive of amine phosphate type, in particular in a content ranging from 0.001 to 3% by weight, preferably. from 0.005 to 1% by mass and more particularly from 0.05 to 0.5% by mass.
12. Composition lubrifiante selon l’une quelconque des revendications précédentes, ladite composition comprenant en outre au moins un additif antioxydant phénolique, en particulier en une teneur comprise entre 0,01 et 5 % massique, par rapport à la masse totale de ladite composition, de préférence entre 0,05 et 3 % massique et plus particulièrement entre 0,1 et 1 % massique. 12. A lubricating composition according to any one of the preceding claims, said composition further comprising at least one phenolic antioxidant additive, in particular in a content of between 0.01 and 5% by mass, relative to the total mass of said composition, preferably between 0.05 and 3% by weight and more particularly between 0.1 and 1% by weight.
13. Composition lubrifiante selon l’une quelconque des revendications précédentes, ladite composition comprenant, voire consistant en : 13. A lubricating composition according to any one of the preceding claims, said composition comprising, or even consisting of:
- de 75 à 99 % massique d’au moins un polyalkylène glycol A, en particulier tel que défini
selon l’une quelconque des revendications 2 à 5 ; - from 75 to 99% by mass of at least one polyalkylene glycol A, in particular as defined according to any one of claims 2 to 5;
- de 1 à 15 % massique d’au moins un polyalkylène glycol B, en particulier tel que défini selon l’une quelconque des revendications 7 et 8 ; - from 1 to 15% by mass of at least one polyalkylene glycol B, in particular as defined according to any one of claims 7 and 8;
- éventuellement de 0,001 à 1 % massique d’au moins un additif anti-usure/extrême pression de type phosphate d’amine ; et - optionally from 0.001 to 1% by mass of at least one anti-wear / extreme pressure additive of amine phosphate type; and
- éventuellement de 0,05 à 3 % massique d’au moins un antioxydant phénolique la somme des constituants étant égale à 100 %, et les pourcentages étant exprimés par rapport à la masse totale de la composition lubrifiante. - optionally from 0.05 to 3% by mass of at least one phenolic antioxidant, the sum of the constituents being equal to 100%, and the percentages being expressed relative to the total mass of the lubricating composition.
14. Utilisation d’une composition lubrifiante, telle que définie selon l’une quelconque des revendications 1 à 13, dans un système réfrigérant comprenant un circuit de compression de gaz, en particulier dans un compresseur d’un système de climatisation automobile, en association avec un fluide réfrigérant à base de composés hydroflu orocarbonés, en particulier avec un fluide réfrigérant à base de 1, 1,1,2- tétrafluoroéthane et/ou 2,3,3,3-tétrafluoropropène. 14. Use of a lubricating composition, as defined according to any one of claims 1 to 13, in a refrigerant system comprising a gas compression circuit, in particular in a compressor of an automotive air conditioning system, in combination. with a refrigerant fluid based on hydrofluorocarbon compounds, in particular with a refrigerant based on 1, 1,1,2-tetrafluoroethane and / or 2,3,3,3-tetrafluoropropene.
15. Compresseur d’un système de climatisation automobile mettant en œuvre une composition lubrifiante telle que définie selon l’une quelconque des revendications 1 à 13. 15. Compressor of an automotive air conditioning system using a lubricating composition as defined in any one of claims 1 to 13.
16. Composition de transfert de chaleur, pour un système réfrigérant comprenant un circuit de compression de gaz, en particulier pour un système de climatisation automobile, comprenant : 16. Heat transfer composition, for a refrigerant system comprising a gas compression circuit, in particular for an automotive air conditioning system, comprising:
- une composition lubrifiante telle que définie selon l’une quelconque des revendications 1 à 13 ; et - a lubricating composition as defined according to any one of claims 1 to 13; and
- un fluide réfrigérant à base de composés hydroflu orocarbonés, en particulier à base de 1, 1,1,2-tétrafluoroéthane et/ou de 2,3,3,3-tétrafluoropropène. - a refrigerant based on hydrofluorocarbon compounds, in particular based on 1, 1,1,2-tetrafluoroethane and / or 2,3,3,3-tetrafluoropropene.
17. Utilisation d’une composition de transfert de chaleur telle que définie en revendication 16 dans un système réfrigérant comprenant un circuit de compression de gaz, en particulier pour un système de climatisation automobile. 17. Use of a heat transfer composition as defined in claim 16 in a refrigerant system comprising a gas compression circuit, in particular for an automotive air conditioning system.
18. Système réfrigérant comprenant un circuit de compression de gaz, ledit système réfrigérant comprenant une composition de transfert de chaleur telle que définie en revendication 16, ledit système réfrigérant étant en particulier un système de climatisation automobile.
18. Refrigerant system comprising a gas compression circuit, said refrigerant system comprising a heat transfer composition as defined in claim 16, said refrigerant system being in particular an automotive air conditioning system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1901106A FR3092585B1 (en) | 2019-02-05 | 2019-02-05 | Lubricating composition for compressor |
| PCT/EP2020/052569 WO2020161051A1 (en) | 2019-02-05 | 2020-02-03 | Compressor lubricant composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3921399A1 true EP3921399A1 (en) | 2021-12-15 |
Family
ID=66690692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20702132.0A Withdrawn EP3921399A1 (en) | 2019-02-05 | 2020-02-03 | Compressor lubricant composition |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11535809B2 (en) |
| EP (1) | EP3921399A1 (en) |
| CN (1) | CN113597465B (en) |
| FR (1) | FR3092585B1 (en) |
| WO (1) | WO2020161051A1 (en) |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4755316A (en) * | 1987-10-23 | 1988-07-05 | Allied-Signal Inc. | Refrigeration lubricants |
| JP2673587B2 (en) * | 1989-10-03 | 1997-11-05 | 東燃株式会社 | 1.1.1.2-Refrigerating Lubricating Oil Using Tetrafluoroethane Refrigerant |
| JPH05302094A (en) * | 1992-04-28 | 1993-11-16 | Tonen Corp | Refrigerator oil composition |
| GB0002260D0 (en) * | 2000-02-02 | 2000-03-22 | Laporte Performance Chemicals | Lubricating oils |
| CN101730734B (en) | 2007-06-12 | 2013-07-17 | 出光兴产株式会社 | Lubricating oil composition for refrigerator and compressor using the same |
| US8003003B2 (en) * | 2008-04-04 | 2011-08-23 | Dow Global Technologies Llc | Refrigerant composition |
| ES2673993T3 (en) | 2008-12-23 | 2018-06-26 | Shrieve Chemical Products, Inc. | Lubricant composition for refrigerants |
| US20130096218A1 (en) * | 2010-06-22 | 2013-04-18 | Arkema Inc. | Heat transfer compositions of hydrofluorocarbons and a hydrofluoroolefin |
| BR112013003304A2 (en) * | 2010-08-31 | 2019-09-24 | Dow Global Technologies Llc | lubricant composition and lubricant composition for outdoor use |
| US10144855B2 (en) * | 2012-03-27 | 2018-12-04 | Jxtg Nippon Oil And Energy Corporation | Working fluid composition for refrigerator |
| JP5946755B2 (en) * | 2012-12-07 | 2016-07-06 | Ｊｘエネルギー株式会社 | Refrigerator oil composition and working fluid composition for refrigerator |
| JP6478202B2 (en) * | 2014-11-07 | 2019-03-06 | 出光興産株式会社 | Lubricating oil composition for refrigerator and refrigerator |
| MX2018014926A (en) * | 2016-06-02 | 2019-09-02 | Basf Se | Lubricant composition. |
| WO2018057730A1 (en) * | 2016-09-23 | 2018-03-29 | Basf Se | Lubricant composition |
| US10883063B2 (en) * | 2018-01-23 | 2021-01-05 | The Chemours Company Fc, Llc | Compositions, system and methods for introducing PAG lubricant or refrigerant into an air-conditioning or system using lower or low GWP refrigerant or refrigerant blends |
| JP7300830B2 (en) * | 2018-12-28 | 2023-06-30 | 出光興産株式会社 | Polyalkylene glycol compound |
| JP7155001B2 (en) * | 2018-12-28 | 2022-10-18 | 出光興産株式会社 | Polyalkylene glycol compound |
-
2019
- 2019-02-05 FR FR1901106A patent/FR3092585B1/en active Active
-
2020
- 2020-02-03 US US17/428,540 patent/US11535809B2/en active Active
- 2020-02-03 WO PCT/EP2020/052569 patent/WO2020161051A1/en unknown
- 2020-02-03 CN CN202080021685.1A patent/CN113597465B/en active Active
- 2020-02-03 EP EP20702132.0A patent/EP3921399A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR3092585A1 (en) | 2020-08-14 |
| US20220127544A1 (en) | 2022-04-28 |
| WO2020161051A1 (en) | 2020-08-13 |
| US11535809B2 (en) | 2022-12-27 |
| FR3092585B1 (en) | 2021-02-12 |
| CN113597465A (en) | 2021-11-02 |
| CN113597465B (en) | 2023-03-31 |
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