- 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).