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

1997-07-31

1999-10-19

Skane, Christine

Compositions

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

62114, 510408, 516 8, C09K 504, C09K 330

Patent

active

059684062

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.

REFERENCES:
patent: 4810403 (1989-03-01), Bivens et al.
patent: 4983312 (1991-01-01), Tamura et al.
patent: 5115868 (1992-05-01), Dougherty, Jr. et al.
patent: 5135054 (1992-08-01), Nimitz et al.
patent: 5262077 (1993-11-01), Bivens et al.
patent: 5278196 (1994-01-01), Robin et al.
patent: 5314926 (1994-05-01), Robin et al.

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