Patent ID: 6531441
Filing Date: 2003-03-11
Classification: C08J,C09K,C11D

Abstract:
An azeotropic composition consisting essentially of:about 85.8 weight percent 1,1,1,2,3,3,3-heptafluoropropane and about 14.2 weight percent of n-butane having a vapor pressure of about 76.8 psia when the temperature is adjusted to about 25 degrees C.; or about 55.2 weight percent 1,1,1,2,3,3,3-heptafluoropropane and about 44.8 weight percent of cyclopropane having a vapor pressure of about 125.1 psia when the temperature is adjusted to about 25 degrees C.; or about 77.6 weight percent 1,1,1,2,3,3,3-heptafluoropropane and about 22.4 weight percent of isobutane having a vapor pressure of about 88.8 psia when the temperature is adjusted to about 25 degrees C.; or about 50.4 weight percent 1,1,1,2,3,3,3-heptafluoropropane and about 49.6 weight percent of propane having a vapor pressure of about 157.4 psia when the temperature is adjusted to about 25 degrees C.