Patent ID: 6846792
Filing Date: 2005-01-25
Classification: C08J,C09K,C11D

Abstract:
1. An azeotropic or azeotrope-like composition consisting essentially of: 1 to 59 weight percent of 1,1,1,2,2-pentafluoroethane (HFC-125) and about 99-41 weight percent of propylene or 81 to 99 weihht percent of 1,1,1,2,2-pentafluoroethane (HFC-125) and 19 to 1 weight percent of propylene, said composition having a vapor pressure of about 167.4 psia to about 229.1 psia when the temperature is adjusted to about 25 degrees C.; or about 1 to 99 weight percent of 1,1,1-trifluoroethane (HFC-143a) and about 1 to 99 weight percent of propylene said composition having a vapor pressure of about 166.2 psia to about 181.2 psia when the temperature is adjusted to about 25 degrees C.