Pseudoazeotropic mixtures based on difluoromethane and on pentafluorodimethyl ether, and applications thereof as refrigerants

摘要

The pseudo-azeotropic mixt. contains difluoromethane (HFC-32), pentafluorodimethyl ether (E-125) and at least one cpd. from 1,1,1,2 (or 1,1,2,2) tetrafluoroethane (HFC-134a or HFC-134), 1,1,1-trifluoroethane (HFC-143a), 1,1-difluoro (HFC-152a), 1,1,1,2,3,3,3- (or 1,1,1,2,2,3,3)-heptafluoro-propane (HFC-227ea or HFC-227ca) and 1,1,1,2,2-pentafluoro-propane (HFC-245cb).