Compositions and methods for reducing fire hazard of flammable refrigerants
AssigneeE. I. Du Pont de Nemours and Company
InventorsThomas J. Leck, Howard S. Hammel
Life of this patent
Estimating the term…
Abstract
The present invention relates to compositions comprising flammable refrigerant, fire hazard-reducing agent, and optionally a lubricant suitable for use in a refrigeration or air conditioning apparatus. Further, the present invention relates to compositions comprising lubricant and fire hazard-reducing agent and methods for reducing flammability of flammable refrigerant, for delivering a fire hazard-reducing agent to a refrigeration or air conditioning apparatus, and for replacing a non-flammable refrigerant with a flammable refrigerant.
Claims18
1-12. (canceled)
A composition comprising:
- (i) at least one flammable refrigerant;
- and
- (ii) a fire hazard-reducing agent comprising at least one of a phosphate salt, a carbonate salt, or a mixture thereof.
A composition comprising:
- (i) a fire hazard-reducing agent suitable for use with a flammable refrigerant comprising at least one of a phosphate salt, a carbonate salt, or a mixture thereof;
- and
- (ii) a lubricant suitable for use with refrigeration or air conditioning apparatus.
A method of using a fire-hazard reducing agent comprising at least one of a phosphate salt, a carbonate salt, or a mixture thereof, said method comprising combining a flammable refrigerant with said fire-hazard reducing agent in a refrigeration or air conditioning apparatus.
Dependencies are inferred from the claim text.