CN116478745A - Polyalkoxyl ether refrigerator oil composition and preparation method and application thereof - Google Patents
Polyalkoxyl ether refrigerator oil composition and preparation method and application thereof Download PDFInfo
- Publication number
- CN116478745A CN116478745A CN202210043362.3A CN202210043362A CN116478745A CN 116478745 A CN116478745 A CN 116478745A CN 202210043362 A CN202210043362 A CN 202210043362A CN 116478745 A CN116478745 A CN 116478745A
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- Prior art keywords
- compound
- composition
- carbodiimides
- ether
- refrigerant
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- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 title claims abstract description 204
- 239000000203 mixture Substances 0.000 title claims abstract description 76
- 238000002360 preparation method Methods 0.000 title claims abstract description 43
- 239000003507 refrigerant Substances 0.000 claims abstract description 36
- -1 polybutylene Polymers 0.000 claims abstract description 16
- 150000001875 compounds Chemical class 0.000 claims description 59
- 239000003795 chemical substances by application Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 14
- 238000012360 testing method Methods 0.000 claims description 12
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 8
- 150000001718 carbodiimides Chemical class 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 7
- 229940126062 Compound A Drugs 0.000 claims description 6
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 239000001294 propane Substances 0.000 claims description 5
- 239000002516 radical scavenger Substances 0.000 claims description 5
- 238000005057 refrigeration Methods 0.000 claims description 5
- 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 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 4
- BDNKZNFMNDZQMI-UHFFFAOYSA-N 1,3-diisopropylcarbodiimide Chemical class CC(C)N=C=NC(C)C BDNKZNFMNDZQMI-UHFFFAOYSA-N 0.000 claims description 2
- QWQNFXDYOCUEER-UHFFFAOYSA-N 2,3-ditert-butyl-4-methylphenol Chemical compound CC1=CC=C(O)C(C(C)(C)C)=C1C(C)(C)C QWQNFXDYOCUEER-UHFFFAOYSA-N 0.000 claims description 2
- YDKXQROQJPVWJU-UHFFFAOYSA-N C(CCCCCCCC)C1=C(C=CC=C1)N=C=NC1=C(C=CC=C1)CCCCCCCCC Chemical class C(CCCCCCCC)C1=C(C=CC=C1)N=C=NC1=C(C=CC=C1)CCCCCCCCC YDKXQROQJPVWJU-UHFFFAOYSA-N 0.000 claims description 2
- QOSSAOTZNIDXMA-UHFFFAOYSA-N Dicylcohexylcarbodiimide Chemical class C1CCCCC1N=C=NC1CCCCC1 QOSSAOTZNIDXMA-UHFFFAOYSA-N 0.000 claims description 2
- DMBHHRLKUKUOEG-UHFFFAOYSA-N N-phenyl aniline Natural products C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 238000004378 air conditioning Methods 0.000 claims description 2
- 150000001335 aliphatic alkanes Chemical group 0.000 claims description 2
- 125000005037 alkyl phenyl group Chemical group 0.000 claims description 2
- 230000003078 antioxidant effect Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 229940035422 diphenylamine Drugs 0.000 claims description 2
- GMEUEHIGFJMSTL-UHFFFAOYSA-N n,n'-bis(2,3-dibutylphenyl)methanediimine Chemical class CCCCC1=CC=CC(N=C=NC=2C(=C(CCCC)C=CC=2)CCCC)=C1CCCC GMEUEHIGFJMSTL-UHFFFAOYSA-N 0.000 claims description 2
- WCQUXQDPAFJFHB-UHFFFAOYSA-N n,n'-bis(2-butylphenyl)methanediimine Chemical class CCCCC1=CC=CC=C1N=C=NC1=CC=CC=C1CCCC WCQUXQDPAFJFHB-UHFFFAOYSA-N 0.000 claims description 2
- POOVXLCLGSARNP-UHFFFAOYSA-N n,n'-bis(2-propan-2-ylphenyl)methanediimine Chemical class CC(C)C1=CC=CC=C1N=C=NC1=CC=CC=C1C(C)C POOVXLCLGSARNP-UHFFFAOYSA-N 0.000 claims description 2
- GPZRJTOZLDJPBA-UHFFFAOYSA-N n,n'-bis[2,3-di(propan-2-yl)phenyl]methanediimine Chemical class CC(C)C1=CC=CC(N=C=NC=2C(=C(C(C)C)C=CC=2)C(C)C)=C1C(C)C GPZRJTOZLDJPBA-UHFFFAOYSA-N 0.000 claims description 2
- CMESPBFFDMPSIY-UHFFFAOYSA-N n,n'-diphenylmethanediimine Chemical class C1=CC=CC=C1N=C=NC1=CC=CC=C1 CMESPBFFDMPSIY-UHFFFAOYSA-N 0.000 claims description 2
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 150000003568 thioethers Chemical class 0.000 claims description 2
- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 claims description 2
- 150000003580 thiophosphoric acid esters Chemical class 0.000 claims description 2
- IKXFIBBKEARMLL-UHFFFAOYSA-N triphenoxy(sulfanylidene)-$l^{5}-phosphane Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=S)OC1=CC=CC=C1 IKXFIBBKEARMLL-UHFFFAOYSA-N 0.000 claims description 2
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 54
- 239000010687 lubricating oil Substances 0.000 abstract description 5
- 238000005191 phase separation Methods 0.000 abstract description 5
- 238000006116 polymerization reaction Methods 0.000 abstract description 5
- 229920000642 polymer Polymers 0.000 abstract description 4
- 229920001451 polypropylene glycol Polymers 0.000 abstract description 4
- 230000033228 biological regulation Effects 0.000 abstract description 2
- 229920001748 polybutylene Polymers 0.000 abstract description 2
- 239000002199 base oil Substances 0.000 description 72
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 57
- 238000006243 chemical reaction Methods 0.000 description 44
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 41
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 38
- 239000004721 Polyphenylene oxide Substances 0.000 description 37
- 229920000570 polyether Polymers 0.000 description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 34
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 32
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 27
- 238000003756 stirring Methods 0.000 description 24
- 230000000052 comparative effect Effects 0.000 description 23
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 20
- 239000003054 catalyst Substances 0.000 description 20
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 19
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 19
- 239000000391 magnesium silicate Substances 0.000 description 19
- 229910052919 magnesium silicate Inorganic materials 0.000 description 19
- 235000019792 magnesium silicate Nutrition 0.000 description 19
- 239000008367 deionised water Substances 0.000 description 17
- 229910021641 deionized water Inorganic materials 0.000 description 17
- 238000001914 filtration Methods 0.000 description 17
- 229910001868 water Inorganic materials 0.000 description 17
- 230000032683 aging Effects 0.000 description 16
- 238000001816 cooling Methods 0.000 description 16
- 125000004122 cyclic group Chemical group 0.000 description 16
- 238000007599 discharging Methods 0.000 description 16
- 238000010438 heat treatment Methods 0.000 description 16
- 229910052757 nitrogen Inorganic materials 0.000 description 16
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 9
- BDAWXSQJJCIFIK-UHFFFAOYSA-N potassium methoxide Chemical compound [K+].[O-]C BDAWXSQJJCIFIK-UHFFFAOYSA-N 0.000 description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 239000003999 initiator Substances 0.000 description 5
- 230000000379 polymerizing effect Effects 0.000 description 5
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 230000003301 hydrolyzing effect Effects 0.000 description 3
- 239000010721 machine oil Substances 0.000 description 3
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 2
- 150000004996 alkyl benzenes Chemical class 0.000 description 2
- 125000002947 alkylene group Chemical group 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010696 ester oil Substances 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000013112 stability test Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 125000005918 1,2-dimethylbutyl group Chemical group 0.000 description 1
- 125000006218 1-ethylbutyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000006176 2-ethylbutyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(C([H])([H])*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004493 2-methylbut-1-yl group Chemical group CC(C*)CC 0.000 description 1
- 125000005916 2-methylpentyl group Chemical group 0.000 description 1
- 125000003542 3-methylbutan-2-yl group Chemical group [H]C([H])([H])C([H])(*)C([H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000005917 3-methylpentyl group Chemical group 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 229910052783 alkali metal Chemical group 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical group 0.000 description 1
- 150000001340 alkali metals Chemical group 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000010725 compressor oil Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 125000003538 pentan-3-yl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- RPDAUEIUDPHABB-UHFFFAOYSA-N potassium ethoxide Chemical compound [K+].CC[O-] RPDAUEIUDPHABB-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010726 refrigerant oil Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/20—Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
- C10M107/30—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M107/32—Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
- C10M2203/022—Well-defined aliphatic compounds saturated
-
- 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
- C10M2209/105—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
- C10M2209/106—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four carbon atoms only
- C10M2209/1065—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing four 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
- C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
- C10M2209/1085—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/14—Containing carbon-to-nitrogen double bounds, e.g. guanidines, hydrazones, semicarbazones
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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
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
- C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/041—Triaryl phosphates
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2223/047—Thioderivatives not containing metallic elements
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
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- 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
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Abstract
The invention belongs to the technical field of industrial lubricating oil such as refrigerator oil and the like, and particularly relates to a polyalkoxyl ether refrigerator oil composition and a preparation method and application thereof. The invention also discloses a preparation method and application of the composition. The polyalkoxyl ether refrigerator oil composition adopts the compositions of the polypropylene oxide polymer and the polypropylene oxide and polybutylene oxide block polymer, and can realize the regulation and control of the two-phase separation temperature of the polyalkoxyl ether refrigerator oil composition and the R290 refrigerant by changing the polymerization degree and the proportion of the two components, thereby obviously improving the compatibility of the polyalkoxyl ether refrigerator oil composition and the R290 refrigerant.
Description
Technical Field
The invention belongs to the technical field of industrial lubricating oil such as refrigerator oil and the like, and particularly relates to a polyalkoxyl ether refrigerator oil composition and a preparation method and application thereof.
Background
In recent years, refrigerants for refrigerator oils are increasingly tending to use Hydrofluorocarbon (HFC) refrigerants having zero Ozone Depletion Potential (ODP) and lower Global Warming Potential (GWP). In the refrigeration compressor of the domestic air conditioner, the current use amount is R410A, R and the like, and the HFC refrigerant does not destroy the ozone layer, but has larger greenhouse effect. In contrast, lower hydrocarbons having about 2 to 4 carbon atoms have been recently attracting attention because they do not destroy the ozone layer and have very low global warming effects as compared with HFC refrigerants. For example, isobutane (R600 a) has been used as a refrigerant for a refrigerator, and particularly propane (R290) having 3 carbon atoms has been beginning to be applied to a refrigerant for a home air conditioner.
As refrigerating machine oils for lower hydrocarbon refrigerants, many mineral oils, alkylbenzene oils, ester oils, and polyether oils of naphthene-based or paraffin-based have been reported. However, on the one hand, when the conventional mineral oil, alkylbenzene oil or ester oil is used as the lubricating oil, the lubricating oil is completely compatible with the R290 refrigerant, so that the viscosity of the lubricating oil is reduced, the lubricating performance of the oil is reduced, the wear resistance and the sealing performance of the compressor are reduced, and the performance and the service life of the compressor are greatly reduced. On the other hand, although polyether oil has been widely used in compressor oil of air conditioner of automobile using R134 as refrigerant, for example, in the prior art CN103089570a, it is not compatible with R290, if refrigerating machine oil incompatible with refrigerant is used in the refrigerating system, delamination of oil and refrigerant is easily caused on an evaporator in the refrigerating system, and the refrigerating machine oil is not easily returned into a compressor of the refrigerating system, thereby causing oil shortage of moving parts of the compressor and affecting reliability of the compressor. At the same time, the oil retained in the evaporator affects the heat exchange efficiency of the evaporator, resulting in a decrease in the efficiency of the refrigeration system.
Therefore, there is a need to further develop a refrigerator oil having more suitable compatibility or solubility with the refrigerant.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a composition comprising a compound a represented by the following formula:
and
a compound B represented by the formula:
wherein R is 1 、R 3 The same or different, independently of one another, from hydrogen or C 1-6 An alkyl group;
R 2 、R 4 selected from hydrogen;
m is a number between 2.5 and 40;
n is a number between 0.5 and 40;
p is a number between 0.5 and 35.
According to an embodiment of the invention, the composition is a refrigerator oil composition, such as a polyalkoxyether refrigerator oil composition.
According to an embodiment of the invention, the compound a is a polyalkoxyether base oil polymerized from propylene oxide; the compound B is polyalkoxyl ether base oil formed by block polymerization of propylene oxide and butylene oxide.
According to an embodiment of the present invention, m, n, p each represent the average molar number of addition of the alkylene oxide described above, which may be independently selected from integers or fractions.
According to an embodiment of the invention, m is an integer or fraction between 5 and 20, for example an integer or fraction between 10 and 18.
According to an embodiment of the invention n is an integer or fraction between 1 and 15, for example an integer or fraction between 5 and 10.
According to an embodiment of the invention, p is an integer or fraction between 1 and 15, for example an integer or fraction between 1 and 5.
According to an embodiment of the present invention, the mass percentage of compound a is 10-90%, such as 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80% or 90%, based on the total weight of compound a and compound B;
according to an embodiment of the invention, the mass percentage of compound B may be 10-90%, such as 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80% or 90%, provided that the sum of the mass percentages of compound a and compound B is 100%.
According to embodiments of the invention, the weight ratio of compound a to compound B may vary in the range of 10:90 to 90:10, for example 70:30 to 30:70, examples of which may be 80:20, 75:25, 70:30, 65:35, 60:40, 55:45, 50:50, 45:50, 40:60, 35:65, 30:70, 25:75 or 20:80.
According to an embodiment of the invention, the composition has a kinematic viscosity at 40 ℃ of 10 to 160mm 2 /s, e.g. 20-85 mm 2 Preferably 32 to 80mm 2 Between/s, an example of which may be 10mm 2 /s、20mm 2 /s、30mm 2 /s、40mm 2 /s、50mm 2 /s、60mm 2 /s、70mm 2 /s、80mm 2 /s、90mm 2 /s、100mm 2 /s、110mm 2 /s、120mm 2 /s、130mm 2 /s、140mm 2 /s、150mm 2 /s、160mm 2 /s。
According to a preferred embodiment of the present invention, the kinematic viscosity of compound a and compound B at 40 ℃ is within ±20%, more preferably within ±10%, still more preferably within ±5%. Wherein the difference in the ratio of the kinematic viscosities of the compound A and the compound B is calculated by the formula (1):
phase difference ratio= (kinematic viscosity of compound a-kinematic viscosity of compound B)/kinematic viscosity of compound B x 100%.
According to an embodiment of the invention, the acid value of the composition is not more than 0.01mgKOH/g.
According to an embodiment of the invention, the composition, when mixed with a propane (e.g. R290) refrigerant at an oil fraction of 20wt%, has a low temperature two layer separation temperature of between-45 and 20 ℃, for example between-25 and 18 ℃, preferably between-25 and 15 ℃.
According to an embodiment of the present invention, the composition may further contain at least one of an acid scavenger, an antiwear agent and an antioxidant.
According to an embodiment of the present invention, the composition may further contain an acid scavenger. The acid scavenger includes, but is not limited to, carbodiimide-based compounds, such as at least one selected from the group consisting of: dialkyl carbodiimides, diphenyl carbodiimides, bis (alkylphenyl) carbodiimides, diisopropyl carbodiimides, dicyclohexyl carbodiimides and the like, xylyl carbodiimides, bis (isopropylphenyl) carbodiimides, bis (diisopropylphenyl) carbodiimides, bis (triisophenyl) carbodiimides, bis (butylphenyl) carbodiimides, bis (dibutylphenyl) carbodiimides, bis (nonylphenyl) carbodiimides and the like.
According to an embodiment of the invention, the composition may also contain an antiwear agent. For example, the antiwear agent includes, but is not limited to, at least one selected from the group consisting of: phosphate esters, thiophosphate esters, thioether compounds, zinc dialkyldithiophosphate, triphenyl phosphate (TPP), tricresyl phosphate (TCP), or triphenyl thiophosphate (TPPT), and the like.
According to embodiments of the present invention, the polyalkoxy ether refrigerator oil composition may also contain antioxidants including, but not limited to, di-t-butyl-p-cresol and/or alkyl diphenyl amine.
The present invention also provides a fluid composition comprising a composition as described above and a refrigerant. Preferably, the composition is used as a refrigerator oil.
According to an embodiment of the invention, the refrigerant is selected from alkane refrigerants, such as R290 refrigerant (propane refrigerant).
The invention also provides the use of the above composition or fluid composition in a compression refrigeration, air conditioning or heat pump system.
The invention also provides a preparation method of the composition, which comprises the step of mixing the compound A with the compound B.
Preferably, the preparation method further comprises testing the kinematic viscosity of compound a and compound B prior to mixing, for example, 40 ℃; more preferably, the compound a and the compound B are selected so that the kinematic viscosity thereof at 40 ℃ is within ±20%, more preferably within ±10%, and even more preferably within ±5%.
Preferably, the preparation process further comprises selecting compound A, compound B and/or the ratio thereof such that the kinematic viscosity of the composition, for example at 40 ℃, is from 10 to 160mm 2 S, preferably 20-85 mm 2 S, e.g. 32-80 mm 2 /s。
Alternatively, the preparation method may further include a method of preparing the compound a and/or the compound B.
According to an embodiment of the present invention, the process for producing compound a comprises polymerizing propylene oxide in the presence of an initiator and a catalyst to obtain compound a.
According to an embodiment of the present invention, the process for producing compound B comprises polymerizing propylene oxide and butylene oxide in the presence of an initiator and a catalyst to obtain compound B.
Preferably, in the process for the preparation of compound a or B, the polymerization is carried out under an atmosphere inert to the reaction, for example a nitrogen atmosphere.
Preferably, in the process for the preparation of compound A or B, the temperature of the reaction is above 80 ℃, for example 100 to 150 ℃, such as 110 to 120 ℃.
Preferably, in the preparation method of the compound a or B, the initiator may be selected from at least one of ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, n-butanol, and the like. As an example, in the preparation method of the compound a, the initiator may be selected from at least one of ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol; in the preparation method of the compound B, the initiator can be at least one selected from ethylene glycol, propylene glycol and n-butanol.
Preferably, in the preparation method of the compound a, the catalyst may be selected from at least one of alkali metal hydroxide or alkali metal substituted compound of hydrogen of alcoholic hydroxyl group, for example, at least one of sodium hydroxide, potassium hydroxide, sodium methoxide, potassium methoxide, sodium ethoxide, potassium ethoxide.
According to an embodiment of the present invention, the preparation method of the compound a or B further comprises purifying the crude product obtained by the polymerization reaction to obtain the compound a or B. Preferably, the purification comprises the addition of water, phosphoric acid and magnesium silicate polyether concentrates, as well as dehydration and filtration steps.
As an example, deionized water 1-5 wt%, phosphoric acid 0.15-0.45 wt% and magnesium silicate polyether refined agent 0.03-0.1 wt% are added into the crude product.
Preferably, after adding water, phosphoric acid and magnesium silicate polyether refined agent, the obtained mixture is stirred for 1-2 hours at 75-95 ℃, then dehydrated in vacuum until the water content is below 0.01%, and then circularly filtered, finally obtaining the compound A or B.
The invention also provides a method of preparing the fluid composition comprising mixing the composition described above with a refrigerant.
Definition and interpretation of terms
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the claimed subject matter belongs. All patents, patent applications, and publications cited herein are hereby incorporated by reference in their entirety unless otherwise indicated.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the subject matter of the present application. In this application, the singular is used to include the plural unless specifically stated otherwise. It should also be noted that the use of "or" means "and/or" unless stated otherwise. Furthermore, the terms "include" and "comprise," as well as other forms, such as "comprising," "including," and "containing," are not intended to be limiting.
Where a range of values recited in the specification and claims is defined as "a number" or "selected from an integer or a fraction," it is understood that both endpoints of the range, each integer within the range, and each fraction within the range are recited. For example, "a number between 0.5 and 40" should be understood to describe not only the end values of 0.5 and 40, but also the addition of each integer of 1,2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15..30, 31, 32, 33, 34, 35, 36, 37, 38, 39 between the end values, with the proviso that the number after addition does not exceed the range of 0.5 to 40, and the addition of any of the above values to 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, or 0.9; "a number between 0.5 and 35" should be understood to mean not only the endpoints 0.5 and 35, but also each integer of 1,2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15..30, 31, 32, 33, 34, 35 between the endpoints, and the sum of any of the above values and 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, or 0.9, provided that the added number does not exceed the range of 0.5 to 35; the "number between 2.5 and 40" should be understood to describe not only the end values of 2.5 and 40 but also the sum of 1,2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15..30, 31, 32, 33, 34, 35, 36, 37, 38, 39 between the end values, and any of the above values together with 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, or 0.9, provided that the added number does not exceed the range of 2.5 to 40.
The term "alkyl" is understood to mean preferably a straight-chain or branched saturated monovalent hydrocarbon radical. For example, the term "C 1-6 Alkyl "is understood to mean preferably a straight-chain or branched, saturated monovalent hydrocarbon radical having 1,2, 3, 4, 5 or 6 carbon atoms, for example methyl, ethyl, propyl, butyl, pentyl, hexyl, isopropyl, isobutyl (2-methylpropyl), sec-butyl (1-methylpropyl), tert-butyl, isopentyl, 2-methylbutyl, 1-ethylpropyl, 1, 2-dimethylpropyl, neopentyl, 1-dimethylpropyl 4-methylpentyl, 3-methylpentyl, 2-methylpentyl, 1-methylpentyl, 2-ethylpentyl, 2-ethylbutyl, 1-ethylbutyl, 3-dimethylbutyl, 2-dimethylbutyl, 1-dimethylbutyl, 2, 3-dimethylbutyl, 1, 2-dimethylbutyl.
It should be understood that unless otherwise defined, when the prefix "n" is omitted in the description, alkyl groups such as propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, etc. should be understood as n-propyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl.
The beneficial effects are that:
the inventors have unexpectedly found that varying proportions of oxypropylene and oxybutylene groups can alter the compatibility of the refrigerator oil with R290, and that increasing the proportion of oxybutylene groups in the composition can improve the compatibility of the refrigerator oil with R290. The polyalkoxyl ether refrigerator oil composition adopts the compositions of the polypropylene oxide polymer and the polypropylene oxide and polybutylene oxide block polymer, and can realize the regulation and control of the two-phase separation temperature of the polyalkoxyl ether refrigerator oil composition and the R290 refrigerant by changing the polymerization degree and the proportion of the two components, thereby obviously improving the compatibility of the polyalkoxyl ether refrigerator oil composition and the R290 refrigerant.
Detailed Description
The technical scheme of the invention will be further described in detail below with reference to specific embodiments. It is to be understood that the following examples are illustrative only and are not to be construed as limiting the scope of the invention. All technical solutions realized, modified or adjusted based on the above description of the present invention are included in the scope of the present invention.
Unless otherwise indicated, the starting materials and reagents used in the following examples were either commercially available or may be prepared by known methods.
Example 1
The preparation method of the polyalkoxyl ether base oil A comprises the following steps:
firstly, 35g of propylene glycol and 2g of potassium hydroxide catalyst are sequentially added into a reaction kettle, nitrogen is replaced for 2-3 times, vacuumizing is carried out until the temperature reaches 0.07Mpa, the temperature is raised to 110 ℃, 965g of propylene oxide is continuously introduced, the reaction temperature is controlled to be not more than 120 ℃, after the feeding is finished, aging and absorbing are carried out for 0.5h, vacuumizing is carried out for 10min, cooling and discharging are carried out, crude ether is obtained, then 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent are added into the crude ether, stirring is carried out for 1h at 75 ℃, then vacuum dehydration is carried out until the moisture reaches below 0.01%, and then cyclic filtration is carried out, thus obtaining the polyalkoxy ether base oil A.
The average molar addition number m of propylene oxide of the polyalkoxyether base oil A prepared is 33.
The preparation method of the polyalkoxyl ether base oil B comprises the following steps:
firstly, sequentially adding 36g of propylene glycol and 2g of potassium methoxide catalyst into a reaction kettle, replacing 2-3 times by nitrogen, vacuumizing to 0.07Mpa, heating to 110 ℃, continuously introducing 725g of propylene oxide, controlling the reaction temperature to be not more than 120 ℃, aging and absorbing for 0.5h after the end of feeding, keeping the reaction temperature at 120 ℃, then introducing 245g of butylene oxide, continuing the reaction, vacuumizing for 5min, cooling and discharging to obtain crude ether, adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 1h at 75 ℃, then dehydrating in vacuum until the water content is below 0.01%, and performing cyclic filtration to finally obtain the polyalkoxy ether base oil B.
The average molar addition number n of propylene oxide of the polyalkoxyether base oil B prepared is 26.5 and the average molar addition number p of butylene oxide is 6.
Preparation of polyalkoxy ether refrigerator oil composition:
the polyalkoxyl ether base oils A and B are respectively prepared according to the weight percentage of 70: 30. and (3) mixing 65:35, 60:40, 50:50, 40:60 and 30:70, and uniformly stirring to finally obtain the polyalkoxy ether refrigerator oil composition.
Example 2
The preparation method of the polyalkoxyl ether base oil A comprises the following steps:
firstly, sequentially adding 50g of propylene glycol and 2g of potassium hydroxide catalyst into a reaction kettle, replacing with nitrogen for 3 times, vacuumizing to 0.08Mpa, heating to 120 ℃, continuously introducing 950g of propylene oxide, controlling the reaction temperature at 120 ℃, aging and absorbing for 1h after the feeding is finished, vacuumizing for 10min, cooling and discharging to obtain crude ether, adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 1.5h at 85 ℃, then dehydrating in vacuum until the water content is below 0.01%, and performing cyclic filtration to finally obtain the polyalkoxy ether base oil A.
The average molar addition number m of propylene oxide of the polyalkoxyether base oil A prepared was 25.5.
The preparation method of the polyalkoxyl ether base oil B comprises the following steps:
firstly, sequentially adding 50g of propylene glycol and 2g of potassium methoxide catalyst into a reaction kettle, replacing with nitrogen for 3 times, vacuumizing to 0.08Mpa, heating to 120 ℃, continuously introducing 690g of propylene oxide, controlling the reaction temperature at 120 ℃, aging and absorbing for 1h after the feeding is finished, keeping the reaction temperature at 120 ℃, then introducing 270g of butylene oxide, continuing to react, vacuumizing for 15min, cooling and discharging to obtain crude ether, adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 1.5h at 90 ℃, then dehydrating in vacuum until the water content is below 0.01%, and performing cyclic filtration to finally obtain the polyalkoxy ether base oil B.
The average molar addition number n of propylene oxide of the polyalkoxyether base oil B prepared is 19 and the average molar addition number p of butylene oxide is 6.
Preparation of polyalkoxy ether refrigerator oil composition:
the polyalkyl polyether base oils A and B are respectively prepared according to the weight percentage of 70: 30. and (3) mixing 65:35, 60:40, 50:50, 40:60 and 30:70, and uniformly stirring to finally obtain the polyalkoxy ether refrigerator oil composition.
Example 3
The preparation method of the polyalkoxyl ether base oil A comprises the following steps:
firstly, sequentially adding 76g of propylene glycol and 2g of potassium hydroxide catalyst into a reaction kettle, replacing with nitrogen for 3 times, vacuumizing to 0.06Mpa, heating to 110 ℃, continuously introducing 950g of propylene oxide, controlling the reaction temperature to be not more than 120 ℃, aging and absorbing for 0.5h after the feeding is finished, vacuumizing for 10min, cooling and discharging to obtain crude ether, then adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 1h at 90 ℃, then dehydrating in vacuum until the water content is below 0.01%, and performing cyclic filtration to finally obtain the polyalkoxy ether base oil A.
The average molar addition number m of propylene oxide of the polyalkoxyether base oil A prepared was 17.1.
The preparation method of the polyalkoxyl ether base oil B comprises the following steps:
firstly, sequentially adding 65g of propylene glycol and 2g of potassium methoxide catalyst into a reaction kettle, replacing 2 times with nitrogen, vacuumizing to 0.07Mpa, heating to 115 ℃, continuously introducing 700g of propylene oxide, controlling the reaction temperature at 115 ℃, aging and absorbing for 0.5h after the feeding is finished, keeping the reaction temperature at 120 ℃, then introducing 250g of butylene oxide, continuing to react, vacuumizing for 10min, cooling and discharging to obtain crude ether, then adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 1h at 80 ℃, then dehydrating in vacuum until the water content is below 0.01%, and performing cyclic filtration to finally obtain the polyalkoxy ether base oil B.
The average molar addition number n of propylene oxide of the polyalkoxyether base oil B prepared is 14 and the average molar addition number p of butylene oxide is 4.
Preparation of polyalkoxy ether refrigerator oil composition:
the polyalkoxyl ether base oils A and B are respectively prepared according to the weight percentage of 70: 30. and (3) mixing 65:35, 60:40, 50:50, 40:60 and 30:70, and uniformly stirring to finally obtain the polyalkoxy ether refrigerator oil composition.
Example 4
The preparation method of the polyalkoxyl ether base oil A comprises the following steps:
firstly, sequentially adding 76g of propylene glycol and 2g of potassium hydroxide catalyst into a reaction kettle, replacing with nitrogen for 3 times, vacuumizing to 0.08Mpa, heating to 120 ℃, continuously introducing 680g of propylene oxide, controlling the reaction temperature at 120 ℃, aging and absorbing for 1h after the feeding is finished, vacuumizing for 10min, cooling and discharging to obtain crude ether, adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 1.5h at 85 ℃, then dehydrating in vacuum until the water content is below 0.01%, and performing cyclic filtration to finally obtain the polyalkoxyether base oil A.
The average molar addition number m of propylene oxide of the polyalkoxyether base oil A prepared was 11.5.
The preparation method of the polyalkoxyl ether base oil B comprises the following steps:
firstly, sequentially adding 95g of propylene glycol and 2g of potassium methoxide catalyst into a reaction kettle, replacing with nitrogen for 3 times, vacuumizing to 0.08Mpa, heating to 120 ℃, continuously introducing 655g of propylene oxide, controlling the reaction temperature at 120 ℃, aging and absorbing for 1h after the feeding is finished, keeping the reaction temperature at 120 ℃, then introducing 255g of butylene oxide, continuing to react, vacuumizing for 15min, cooling and discharging to obtain crude ether, adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 1.5h at 90 ℃, then dehydrating in vacuum until the water content is below 0.01%, and performing cyclic filtration to finally obtain the polyalkoxy ether base oil B.
The average molar addition number n of propylene oxide of the polyalkoxyether base oil B prepared is 9 and the average molar addition number p of butylene oxide is 2.8.
Preparation of polyalkoxy ether refrigerator oil composition:
the polyalkyl polyether base oils A and B are respectively prepared according to the weight percentage of 70: 30. and (3) mixing 65:35, 60:40, 50:50, 40:60 and 30:70, and uniformly stirring to finally obtain the polyalkoxy ether refrigerator oil composition.
Example 5
The preparation method of the polyalkoxyl ether base oil A comprises the following steps:
firstly, sequentially adding 140g of propylene glycol and 2g of potassium hydroxide catalyst into a reaction kettle, replacing with nitrogen for 2 times, vacuumizing to 0.07Mpa, heating to 115 ℃, continuously introducing 860g of propylene oxide, controlling the reaction temperature to be not more than 120 ℃, aging and absorbing for 0.5h after the feeding is finished, vacuumizing for 10min, cooling and discharging to obtain crude ether, then adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 1h at 90 ℃, then dehydrating in vacuum until the water content is below 0.01%, and performing cyclic filtration to finally obtain the polyalkoxy ether base oil A.
The average molar addition number m of propylene oxide of the polyalkoxyether base oil A prepared is 8.1.
The preparation method of the polyalkoxyl ether base oil B comprises the following steps:
firstly, sequentially adding 135g of propylene glycol and 2g of potassium methoxide catalyst into a reaction kettle, replacing with nitrogen for 3 times, vacuumizing to 0.08Mpa, heating to 120 ℃, continuously introducing 650g of propylene oxide, controlling the reaction temperature at 120 ℃, aging and absorbing for 1h after the feeding is finished, keeping the reaction temperature at 120 ℃, then introducing 220g of butylene oxide, continuing to react, vacuumizing for 10min, cooling and discharging to obtain crude ether, then adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 2h at 85 ℃, then dehydrating in vacuum until the water content is below 0.01%, and performing cyclic filtration to finally obtain the polyalkoxy ether base oil B.
The average molar addition number n of propylene oxide of the polyalkoxyether base oil B prepared is 6.3 and the average molar addition number p of butylene oxide is 1.7.
Preparation of polyalkoxy ether refrigerator oil composition:
the polyalkyl polyether base oils A and B are respectively prepared according to the weight percentage of 70: 30. and (3) mixing 65:35, 60:40, 50:50, 40:60 and 30:70, and uniformly stirring to finally obtain the polyalkoxy ether refrigerator oil composition.
Example 6
The preparation method of the polyalkoxyl ether base oil A comprises the following steps:
firstly, sequentially adding 200g of propylene glycol and 2g of potassium hydroxide catalyst into a reaction kettle, replacing with nitrogen for 2-3 times, vacuumizing to not more than 0.09Mpa, heating to 120 ℃, continuously introducing 800g of propylene oxide, controlling the reaction temperature to not more than 120 ℃, aging and absorbing for 0.5h after the feeding is finished, vacuumizing for 10min, cooling and discharging to obtain crude ether, then adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 1h at 90 ℃, then dehydrating in vacuum until the water content is below 0.01%, and performing cyclic filtration to finally obtain the polyalkoxy ether base oil A.
The average molar addition number m of propylene oxide of the polyalkoxyether base oil A prepared is 5.5.
The preparation method of the polyalkoxyl ether base oil B comprises the following steps:
185g of propylene glycol and 2g of potassium methoxide catalyst are sequentially added into a reaction kettle, nitrogen is replaced for 2-3 times, vacuumizing is carried out until the temperature is not more than 0.09Mpa, heating is carried out to 115 ℃, 610g of propylene oxide is continuously introduced, the reaction temperature is controlled to be not more than 120 ℃, ageing and absorbing are carried out for 1h after the feeding is finished, the reaction temperature is kept at 120 ℃, 210g of butylene oxide is introduced, the reaction is continued, vacuumizing is carried out for 10min, cooling and discharging are carried out, crude ether is obtained, 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent are added into the crude ether, stirring is carried out for 2h at 90 ℃, then vacuum dehydration is carried out until the water content is below 0.01%, and cyclic filtration is carried out, thus obtaining the polyalkoxy ether base oil B finally.
The average molar addition number n of propylene oxide of the polyalkoxyether base oil B prepared is 4.3 and the average molar addition number p of butylene oxide is 1.3.
Preparation of polyalkoxy ether refrigerator oil composition:
the polyalkyl polyether base oils A and B are respectively prepared according to the weight percentage of 70: 30. and (3) mixing 65:35, 60:40, 50:50, 40:60 and 30:70, and uniformly stirring to finally obtain the polyalkoxy ether refrigerator oil composition.
Comparative example 1: example 1 polyether base oil A
Comparative example 2: example 1 polyether base oil B
Comparative example 3: example 2 polyether base oil A
Comparative example 4: example 2 polyether base oil B
Comparative example 5: example 3 polyether base oil A
Comparative example 6: example 3 polyether base oil B
Comparative example 7: example 4 polyether base oil A
Comparative example 8: example 4 polyether base oil B
Comparative example 9: example 5 polyether base oil A
Comparative example 10: example 5 polyether base oil B
Comparative example 11: example 6 polyether base oil A
Comparative example 12: example 6 polyether base oil B
Comparative example 13:
the preparation method of the polyalkoxyl ether base oil A comprises the following steps:
adding 580g of propylene glycol and 2g of potassium hydroxide catalyst into a reaction kettle in sequence, replacing nitrogen for 2-3 times, vacuumizing to 0.07Mpa, heating to 110 ℃, continuously introducing 420g of propylene oxide, controlling the reaction temperature to be not more than 120 ℃, aging and absorbing for 0.5h after the feeding is finished, vacuumizing for 10min, cooling and discharging to obtain crude ether, adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 1h at 75 ℃, then dehydrating in vacuum until the water content is below 0.01%, and performing cyclic filtration to obtain the polyalkoxy ether base oil A.
The average molar addition number m of propylene oxide of the polyalkoxyether base oil A prepared is 1.0.
The preparation method of the polyalkoxyl ether base oil B comprises the following steps:
adding 580g of propylene glycol and 2g of potassium methoxide catalyst into a reaction kettle in sequence, replacing 2-3 times with nitrogen, vacuumizing to 0.07Mpa, heating to 110 ℃, continuously introducing 310g of propylene oxide, controlling the reaction temperature to be not more than 120 ℃, aging and absorbing for 0.5h after the end of feeding, keeping the reaction temperature at 120 ℃, then introducing 110g of butylene oxide, continuing to react, vacuumizing for 5min, cooling and discharging to obtain crude ether, adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 1h at 75 ℃, then dehydrating in vacuum until the water content is below 0.01%, and performing cyclic filtration to finally obtain the polyalkoxy ether base oil B.
The average molar addition number n of propylene oxide of the polyalkoxyether base oil B prepared is 0.7 and the average molar addition number p of butylene oxide is 0.2.
Preparation of polyalkoxy ether refrigerator oil composition:
and mixing the polyalkoxyl ether base oil A and the polyalkoxyl ether base oil B according to the weight percentage of 50:50, and uniformly stirring to finally obtain the polyalkoxyl ether refrigerator oil composition.
Comparative example 14:
the preparation method of the polyalkoxyl ether base oil A comprises the following steps:
firstly, sequentially adding 30g of propylene glycol and 2g of potassium hydroxide catalyst into a reaction kettle, replacing with nitrogen for 2-3 times, vacuumizing to 0.07Mpa, heating to 110 ℃, continuously introducing 970g of propylene oxide, controlling the reaction temperature to be not more than 120 ℃, aging and absorbing for 0.5h after the feeding is finished, vacuumizing for 10min, cooling and discharging to obtain crude ether, then adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 1h at 75 ℃, then dehydrating in vacuum until the moisture is below 0.01%, and performing cyclic filtration to finally obtain the polyalkoxy ether base oil A.
The average molar addition number m of propylene oxide of the polyalkoxyether base oil A prepared is 42.
The preparation method of the polyalkoxyl ether base oil B comprises the following steps:
adding 580g of propylene glycol and 2g of potassium methoxide catalyst into a reaction kettle in sequence, replacing 2-3 times with nitrogen, vacuumizing to 0.07Mpa, heating to 110 ℃, continuously introducing 310g of propylene oxide, controlling the reaction temperature to be not more than 120 ℃, aging and absorbing for 0.5h after the end of feeding, keeping the reaction temperature at 120 ℃, then introducing 110g of butylene oxide, continuing to react, vacuumizing for 5min, cooling and discharging to obtain crude ether, adding 10g of deionized water, 3g of phosphoric acid and 1g of magnesium silicate polyether refined agent into the crude ether, stirring for 1h at 75 ℃, then dehydrating in vacuum until the water content is below 0.01%, and performing cyclic filtration to finally obtain the polyalkoxy ether base oil B.
The average molar addition number n of propylene oxide of the polyalkoxyether base oil B prepared is 32 and the average molar addition number p of butylene oxide is 10.
Preparation of polyalkoxy ether refrigerator oil composition:
and mixing the polyalkoxyl ether base oil A and the polyalkoxyl ether base oil B according to the weight percentage of 50:50, and uniformly stirring to finally obtain the polyalkoxyl ether refrigerator oil composition.
Test example 1
The testing method comprises the following steps:
(1) Kinematic viscosity
The kinematic viscosity test at 40℃was carried out for each sample according to the method described in GB/T265-1988 Petroleum product kinematic viscosity determination method and dynamic viscosity calculation method.
(2) Compatibility of
The compatibility (miscibility) was characterized by the two-phase separation temperature at 20wt% sample level of the polyalkoxyether refrigerator oil composition, as tested according to the test method described in SH/T0699-2000, refrigerator oil compatibility test method.
(3) Stability of
Chemical stability: the test was performed using a chemical stability test of refrigerator oil in an SH/T0698-2000 refrigeration system.
Hydrolytic stability: referring to SH/T0698-2000, a beaker containing a sample of polyalkoxy ether refrigerator oil composition was charged with steel, copper and aluminum metal test bar materials as catalysts and 2000ppm moisture, then placed in a pressure-resistant stainless steel kettle, and after a certain amount of R290 refrigerant was injected, the kettle was closed. And then placing the sealed stainless steel kettle at 150 ℃ and heating for 14 days, and evaluating the hydrolytic stability of the refrigerator oil and the refrigerant according to the appearance and the color of the metal test bar material, the acid value of the polyalkoxy ether refrigerator oil after the test and other indexes. And (5) qualification standard: the acid value of the oil sample after the hydrolysis stability test is not more than 0.05mgKOH/g.
Test results:
the raw material compositions and the performance test results of examples 1 to 6 and comparative examples 1 to 14 of the present invention are shown in tables 1 and 2, respectively, below.
Table 1 summary of specific compositions and performance test results for examples
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TABLE 1 summary of specific compositions and Performance test results for the examples
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Table 2 summary of specific compositions and Performance test results in comparative examples 1 to 14
Analysis of Table 1 shows that the refrigerant oils of examples 1-6 all have good compatibility with R290 refrigerant and hydrolytic stability.
Comparative examples 1,3, 5, 7, 9 and 11 are polyalkoxy ethers polymerized with propylene oxide, which are incompatible with R290 refrigerants, and so it is not significant to continue with other test items.
The block polyalkoxy ethers prepared by polymerizing propylene oxide and butylene oxide in comparative examples 2, 4, 6, 8, 10 and 12, although having good compatibility with R290, had a two-phase separation temperature of less than-50℃and, when combined with a refrigerant, had a relatively high viscosity dilution for the refrigerator oil, a relatively high viscosity drop, a relatively low viscosity drop, and a low lubricity, and caused abrasion of sliding parts, so that it was not significant to continue with the other test fluids.
Comparative examples 13 and 14 were compositions comprising a polyalkoxy ether obtained by polymerizing propylene oxide and a block polyalkoxy ether obtained by polymerizing propylene oxide and butylene oxide, but the average molar addition numbers m, n and p of the alkylene oxides do not fully satisfy the value requirement, on the one hand, the two-phase separation temperatures of the comparative examples and R290 refrigerant are lower than-50 ℃, on the other hand, the kinematic viscosities at 40 ℃ of comparative examples 9 and 10 are respectively smaller and larger than the two very common downstream application viscosity grades, and in general, the refrigerator oil of comparative example 9 cannot satisfy the application requirements due to the lubricating performance, the refrigerator oil of comparative example 10 has higher energy consumption, and the like.
The embodiments of the present invention have been described above by way of example. However, the scope of the present invention is not limited to the above embodiments. Any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art, which fall within the spirit and principles of the present invention, are intended to be included within the scope of the present invention.
Claims (10)
1. A composition comprising a compound a of the formula:
and
a compound B represented by the formula:
wherein R is 1 、R 3 The same or different, independently of one another, from hydrogen or C 1-6 An alkyl group;
R 2 、R 4 selected from hydrogen;
m is a number between 2.5 and 40;
n is a number between 0.5 and 40;
p is a number between 0.5 and 35.
2. The composition of claim 1, wherein m, n, p are independently selected from integers or fractions;
preferably, m is an integer or fraction between 5 and 20, for example an integer or fraction between 10 and 18;
preferably, n is an integer or fraction between 1 and 15, for example an integer or fraction between 5 and 10;
preferably, p is an integer or fraction between 1 and 15, for example an integer or fraction between 1 and 5.
3. The composition according to claim 1 or 2, wherein the mass percent of compound a is 10 to 90%, the mass percent of compound B is 10 to 90%, provided that the sum of the mass percent of compound a and compound B is 100%, based on the total weight of compound a and compound B;
preferably, the weight ratio of compound a to compound B may vary from 10:90 to 90:10, for example from 70:30 to 30:70.
4. A composition according to any one of claims 1 to 3, wherein the composition has a kinematic viscosity at 40 ℃ of from 10 to 160mm 2 /s, e.g. 20-85 mm 2 /s；
Preferably, the kinematic viscosity of compound a and compound B at 40 ℃ is within ±20%, more preferably within ±10%.
5. The composition of any of claims 1-4, wherein the composition has a low temperature two layer separation temperature of between-45 and 20 ℃, such as between-25 and 18 ℃, when mixed with a propane (e.g., R290) refrigerant at an oil fraction of 20 wt%.
6. The composition of any one of claims 1-5, wherein the composition further comprises at least one of an acid scavenger, an antiwear agent, and an antioxidant;
the acid scavenger includes, but is not limited to, carbodiimide-based compounds, such as at least one selected from the group consisting of: dialkyl carbodiimides, diphenyl carbodiimides, bis (alkylphenyl) carbodiimides, diisopropyl carbodiimides, dicyclohexyl carbodiimides and the like, xylyl carbodiimides, bis (isopropylphenyl) carbodiimides, bis (diisopropylphenyl) carbodiimides, bis (triisophenyl) carbodiimides, bis (butylphenyl) carbodiimides, bis (dibutylphenyl) carbodiimides or bis (nonylphenyl) carbodiimides;
the antiwear agent includes, but is not limited to, at least one selected from the group consisting of: phosphate esters, thiophosphate esters, thioether compounds, zinc dialkyldithiophosphate, triphenyl phosphate (TPP), tricresyl phosphate (TCP) or triphenyl thiophosphate (TPPT);
such antioxidants include, but are not limited to, di-t-butyl-p-cresol and/or alkyl diphenyl amine.
7. A fluid composition comprising the polyalkoxyether ether refrigerator oil composition of any one of claims 1-6 and a refrigerant;
preferably, the refrigerant is selected from alkane refrigerants, such as R290 refrigerant (propane refrigerant).
8. Use of a composition according to any one of claims 1 to 6 or a fluid composition according to claim 7 in a compression refrigeration, air conditioning or heat pump system.
9. A process for the preparation of a composition as claimed in any one of claims 1 to 6, wherein the process comprises mixing compound a with compound B; or alternatively, the process may be performed,
a method of preparing a fluid composition according to claim 7 comprising mixing a composition according to any one of claims 1 to 6 with a refrigerant.
10. A method of preparing a composition according to claim 9, wherein the method of preparation further comprises testing the kinematic viscosity of compound a and compound B, for example, 40 ℃ kinematic viscosity, prior to mixing; more preferably, compound a, compound B are selected such that their kinematic viscosity at 40 ℃ is within ±20%, more preferably within ±10%;
preferably, the preparation process further comprises selecting compound A, compound B and/or the ratio thereof such that the kinematic viscosity of the composition, for example at 40 ℃, is from 10 to 160mm 2 S, preferably 20-85 mm 2 S, e.g. 32-80 mm 2 /s。
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