Patent ID: 6486114
Filing Date: 2002-11-26
Classification: C08J,C09K

Abstract:
Compositions having azeotropic properties for use as heat transfer agents for heating, cooling, or combinations thereof, which compositions consist essentially of pentafluoropropane, and a second component selected from the group consisting of perfluoropentane, perfluorohexane, perfluoroheptane; whereinsaid compositions of 1,1,2,2,3-pentafluoropropane and perfluoropentane consist essentially of from about 90 to about 50 weight percent of 1,1,2,2,3-pentafluoropropane and from about 10 to about 50 weight percent of perfluoropentane, which compositions boil at about 18Â° C. at about 760 mm Hg; and said compositions of 1,1,2,2,3-pentafluoropropane and perfluorohexane consist essentially of about 90 to about 50 weight percent of 1,1,2,2,3-pentafluoropropane, and about 10 to about 50 weight percent of perfluorohexane which compositions boil at about 23Â° C. at about 760 mm Hg, and said compositions of 1,1,2,2,3-pentafluoropropane and perfluoroheptane consist essentially of about 99 to about 75 weight percent of 1,1,2,2,3-pentafluoropropane, about 1 to about 25 weight percent of perfluoroheptane which compositions boil at about 25Â° C. at about 760 mm Hg.