- Author
-
Biens, D. B.
|
Lunger, B. S.
- Title
- Halocarbon Blends as Environmentally Safe Substitutes for Dichlorodifluoromethane.
- Coporate
- E. I. du Pont de Nemours and Co., Wilmington, DE
- Report
-
C09K 5/04, C11D 7/50; WO 91/16390; PCT/US91/01803
October 31, 1991
21 p.
- Keywords
-
propellants
|
aerosols
|
refrigeration
|
refrigerants
|
fire extinguishers
|
environmental effects
- Identifiers
- perfluorocarbons; electric insulators and dielectrics; blowing agents; power cycle working; halocarbon blends; azeotrope-like blends
- Abstract
- Azeotrope-like blends are disclosed comprising effective amounts of 1,1,1,2-tetrafluoroethane (HFC-134a), 1,1-difluoroethane (HFC-152a) and a halocarbon selected from the group consisting of 2-chloro-1,1,1,2-tetrafluoroethane (HCFC-124), 2-chloro-1,1,2,2-tetrafluoroethane (HCFC-124a), 1-hydroperfluoropropane (HFC-227ca), 2-hydroperfluoropropane (HFC-227ea), perfluorocyclobutane (FC-C318), 1,2-dichlorotetrafluoroethane (CFC-114), and 1,1-dichlorotetrafluoroethane (CFC-114a).