Method for heating and cooling using fluoroether compounds,...

C - Chemistry – Metallurgy – 09 – K

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C09K 5/04 (2006.01) C08J 9/00 (2006.01) C09K 3/30 (2006.01)

Patent

CA 2656342

Compounds of general formula (I) CxFy-O-CF=CFW wherein x is 1, 2, 3, 4, 5 or 6, y=2x +1, and wherein W is F, CF3, C2F5, C3F7, or formula (II), CxFy-O-CX=CYZ wherein x and y have the meaning given above, X stands for H or F, Y stands for H or F and Z stands for H, F, CF3 or C2F5 with the proviso that at least one of X, Y or Z are H and that not more than 2 hydrogen atoms are contained in the compound of general formula (II), are suitable as or part of refrigerants, solvents, blowing agents, fire extinguishants, ORC liquids, heat transformer liquids, heat pipe liquids or aerosol-producing gases. Preferred co-refrigerants are CF3I, HFC-134a or one or more pentafluoropropenes.

La présente invention concerne des composés répondant à la formule générale (I) CxFy-O-CF=CFW dans laquelle x vaut 1, 2, 3, 4, 5 ou 6, y = 2x + 1, et dans laquelle W représente F, CF3, C2F5, C3F7 ou la formule (II), CxFy-O-CX=CYZ dans laquelle x et y ont la signification donnée ci-dessus, X représente H ou F, Y représente H ou F et Z représente H, F, CF3 or C2F5 à condition qu'au moins un parmi X, Y ou Z représentent H et que pas plus de 2 atomes d'hydrogène soient contenus dans le composé répondant à la formule générale (II), lesquels sont appropriés totalement ou partiellement en tant que réfrigérants, solvants, agents d'expansion, liquides d'extincteurs, liquides ORC, liquides de transformateur de chaleur, liquides de tuyauterie de chauffage ou gaz produits par un aérosol. Les co-réfrigérants préférés sont CF3I, HFC-134a ou un ou plusieurs pentafluoropropènes.

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