Pseudo-azeotropic mixtures of difluoromethane,...

Details Pseudo-azeotropic mixtures of difluoromethane,... Pseudo-azeotropic mixtures of difluoromethane,...

C - Chemistry, Metallurgy

09

K

C09K 5/04 (2006.01) C07C 19/08 (2006.01)

Patent

CA 2100693

PRECIS DE LA DIVULGATION: Pour remplacer le mélange azéotropique de chloro- difluorométhane et de chloropentafluoroéthane (CFC 502) en réfrigération basse température, l'invention propose d'utiliser un mélange pseudo-azéotropique contenant en masse 1 à 15% de difluorométhane, 37 à 50% de pentafluoroéthane et à 62% de 1,1,1-trifluoroéthane. Les propriétés thermodynamiques de ce mélange sont très proches de celles du mélange CFC 502.

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