Patent ID: 6635187
Filing Date: 2003-10-21
Classification: A62D

Abstract:
A composition comprising:(a) CHF2CHF2; and (b) at least two saturated compounds selected from halogenated hydrocarbons and ethers having the formula CnH2n+2-a-bClaFbOc wherein n is an integer from 1 to 4, a is an integer from 0 to 2n+1, b is an integer from 1 to 2n+2-a, and c is 0 or 1, provided that when c is 1 then n is an integer from 2 to 4, provided that component (b) does not include CHF2CHF2 and provided that c is 1 for at least one of the component (b) compounds;wherein the molar ratio of component (b) to CHF2CHF2 is between about 1:99 and about 29.5:70.5, said molar ratio of about 29.5:70.5 being a molar ratio of HF to CHF2CHF2 in an azeotrope or azeotrope-like composition of CHF2CHF2 with HF.