| abstract |
The invention relates to azeotropic and azeotrope-like compositions of 1,1,1,2-tetrafluoroethane and one of the constituents selected from 1,1, -difluoroethane, 1-chloro-1,1-difluoroethane, dimethyl ether, perfluorocyclobutane , n-butane, isobutane and 1,1,1,2,3,3,3-heptafluoropropane, and their use as refrigerants, propellants for aerosol cans and blowing agents for polymer foams. Azeotropic and azeotrope-like compositions of 1,1,1,2-tetrafluoroethane and a member selected from perfluorocyclobutane and 1,1,1,2,3,3,3-heptafluoropropane are also useful as extinguishing agents. fires. |