Patent ID: 6403550
Filing Date: 2002-06-11
Classification: C11D

Abstract:
Azeotropic or azeotrope-like compositions selected from the group consisting of blends comprising, on a weight basis, about 50-90% of 1-chloro-2,2-difluoroethane with about 50-10% of 1,1,1,3,3-pentafluorobutane; about 91-99.5% of 1-chloro-2,2-difluoroethane with about 9-0.5% of methanol; and about 50-75% of 1-chloro-2,2-difluoroethane with about 25-45% of 1,1,1,3,3-pentafluorobutan and about 0.5-10% of methanol.