September 21, 1971

Azeotropes are formed between 1,1-dichloroethane and 1,1,2-trichloro-1,2,2-trifluoroethane which boils at about 115.5.degree. F. at 760 mm. mercury pressure. The azeotrope is useful in solvent degreasing applications.

2

September 21, 1971

04/877,441

November 17, 1969

430/563   534/635 534/637 534/797 534/830

C09B   35/04   (20060101)   C09B   35/00   (20060101)   C09B   62/09   (20060101)   C09B   62/02   (20060101)   G03C   7/29   (20060101)   G03C   7/28   (20060101)  

This application is a continuation-in-part application of U.S. Pat. application Ser. No. 590,204 filed Oct. 28, 1966 and now abandoned.

252/172   252/162   252/364   252/171   134/40   206/311   62/114  

4055049 - Constant boiling mixtures of 1,2-difluoroethane and 1,1,2-trichloro-1,2,2-trifluoroethane - Owned by Allied Chemical Corporation (Morris Township, NJ) Constant boiling mixtures of 1,2-difluoroethane and 1,1,2-trichloro-1,2,2-trifluoroethane are useful as power fluids in low temperature Rankine cycles, and as refrigerants, aerosol propellants, expansion agents and solvents.