Azeotropic and azeotrope-like compositions of 1,1,2,2-tetrafluor

Details Azeotropic and azeotrope-like compositions of 1,1,2,2-tetrafluor Azeotropic and azeotrope-like compositions of 1,1,2,2-tetrafluor

1995-06-07

1997-07-15

McGinty, Douglas J.

Compositions

Vaporization, or expansion, refrigeration or heat or energy...

252305, 252364, 62114, 623241, 510408, 510412, 521 98, C09K 504, C09K 330, C08J 914, C11D 730

Patent

active

056480172

ABSTRACT:
The azeotropic compositions of 1,1,2,2-tetrafluoroethane and 1,1-difluoroethane and the azeotropic and azeotropic-like composition of 1,1,2,2-tetrafluoroethane and one of, 1-chloro-1,1-difluoroethane, perfluorocyclobutane, n-butane, isobutane and 1,1,1,2,3,3,3-heptafluoropropane, and their use as refrigerants, aerosol propellants and blowing agents for polymer foams, are disclosed. The azeotropic and azeotrope-like compositions of 1,1,1,2-tetrafluoroethane and one of perfluorocyclobutane and 1,1,1,2,3,3,3-heptafluoropropane are also useful as fire extinguishants.

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Research Disclosure, vol. 162, disclosure No. 16265 "Fivorocarben Azeotropes" disclosed by EI Dupont de Nemours & Co, Oct. 1977.
Morrison et al, Rev. Int. Fro.d, vol. 16, No. 2 pp. 129-138, 1993.

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