Epoxide and fluorinated epoxide stabilizers for fluoroolefins
AssigneeE. I. Du Pont de Nemours and Company
InventorsAndrew Edward Feiring, Viacheslav A. Petrov, Barbara Haviland Minor, Mario Joseph Nappa, Nandini C. Mouli, Thomas J. Leck, Jon Lee Howell
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Abstract
The present invention relates to compositions comprising at least one fluoroolefin and an effective amount of stabilizer that may be an epoxide, fluorinated epoxide or oxetane, or a mixture thereof with other stabilizers. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.
Claims14
A composition comprising at least one fluoroolefin and an effective amount of a stabilizer comprising:
- a. at least one compound selected from the group consisting of epoxides and fluorinated epoxides represented by Formula A, wherein each of R2 through R5 is H, alkyl of 1 to 6 carbon atoms or fluoroalkyl of 1 to 6 carbon atoms with the proviso that at least one of R2 through R5 is a fluoroalkyl group;
- and
- b. at least one benzophenone derivative.
A method for stabilizing a composition comprising at least one fluoroolefin, said method comprising adding an effective amount of a stabilizer comprising at least one epoxide or fluorinated epoxide and at least one benzophenone derivative to the composition comprising at least one fluoroolefin.
A method for reducing degradation of a composition comprising at least one fluoroolefin, wherein said degradation is caused by the presence of inadvertent air in a refrigeration, air-conditioning or heat pump system, said method comprising adding an effective amount of a stabilizer comprising at least one epoxide or fluorinated epoxide and at least one benzophenone derivative to the composition comprising at least one fluoroolefin.
A method for reducing reaction with oxygen for a composition comprising at least one fluoroolefin, said method comprising adding an effective amount of a stabilizer comprising at least one epoxide or fluorinated epoxide and at least one benzophenone derivative to the composition comprising at least one fluoroolefin.
Dependencies are inferred from the claim text.