1,1,2,2,3,3,4,4-octafluorobutane compositions

Details 1,1,2,2,3,3,4,4-octafluorobutane compositions 1,1,2,2,3,3,4,4-octafluorobutane compositions

C - Chemistry, Metallurgy

09

K

C09K 5/04 (2006.01) C08J 9/14 (2006.01) C09K 3/30 (2006.01) C11D 7/50 (2006.01) C23G 5/024 (2006.01) C23G 5/028 (2006.01)

Patent

CA 2197552

Compositions include compositions of 1,1,2,2,3,3,4,4-octafluorobutane and a hydrocarbon having from 3 to 7 carbon atoms. Specific examples include 1,1,2,2,3,3,4,4-octafluorobutane and butane, cyclopropane, isobutane, propane, cyclopentane, 2,2-dimethylbutane, n-pentane, 2-methylbutane, cyclohexane, 2,3- dimethylpentane, 3-ethylpentane, heptane, hexane or methylcyclopentane. Also included in this invention are compositions of 1,1,2,2,3,3,4,4- octafluorobutane and ethyl formate, propylene oxide, bis(pentafluoroethyl)sulfide, dimethoxyethane or tetrahydrofuran. These compositions, which may be azeotropic or azeotrope-like, may be used as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, refrigerants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents or displacement drying agents.

Des compositions comportent 1,1,2,2,3,3,4,4-actafluorobutane et un hydrocarbure doté de 3 à 7 atomes de carbone. Des exemples spécifiques incluent 1,1,2,2,3,3,4,4-octafluorobutane et butane, cyclopropane, isobutane, propane, cyclopentane, 2,2-diméthylbutane, n-pentane, 2-méthylbutane, cyclohexane, 2,3-diméthylpentane. Cette invention concerne aussi des compositions comprenant 1,1,2,2,3,3,4,4-octafluorobutane et formate d'éthyle, oxyde de propylène, tétrahydrofurane. Ces compositions, qui peuvent être azéotropes ou semblables à des compositions azéotropes, peuvent servir de réfrigérants, d'agents de nettoyage, d'agents gonflants destinés à des polyoléfines ou polyuréthanes, de propulseurs d'aérosols, de fluides caloporteurs, de produits gazeux diélectriques, d'agents d'extinction d'incendies, de fluides opérationnels pour cycles de puissance, de milieux de polymérisation, de fluides d'élimination de particules, de fluides vecteurs, d'agents abrasifs de polissage ou d'agents de séchage par absorption.

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