N-methyl-pyrrolidone and chlorofluorinated hydrocarbons...

Details N-methyl-pyrrolidone and chlorofluorinated hydrocarbons... N-methyl-pyrrolidone and chlorofluorinated hydrocarbons...

C - Chemistry, Metallurgy

09

K

31/46, 31/53

C09K 5/00 (2006.01) C09K 5/04 (2006.01)

Patent

CA 1248745

PRECIS DE LA DIVULGATION: L'invention concerne la stabilisation de compositions calogènes consistant en un mélange de N-méthyl-pyrrolidone et d'hydrocarbures chlorofluorés. Ces compositions sont carac- térisées en ce qu'elles sont stabilisées par l'ajout d'un sel métallique d'acide alkylarylsulfonique à raison de 0,05 à 2,5% par rapport au poids de N-méthyl-pyrrolidone. Les composi- tions ainsi stabilisées peuvent être utilisées sans risque dans les pompes à chaleur par absorption.

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