Phosphorus-containing stabilizers for fluoroolefins
AssigneeE.I. du Pont de Nemours and Company
InventorsThomas J. Leck, Nandini C. Mouli, Barbara Haviland Minor, Mario Joseph Nappa, Jon Lee Howell
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Abstract
The present disclosure relates to compositions comprising at least one fluoroolefin and an effective amount of a stabilizer comprising at least one phosphorus-containing compound selected from the group consisting of thiophosphates, butylated triphenylphosphorothionates, and organophosphates. 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.
Claims16
A composition comprising:
- a. at least one fluoroolefin;
- and
- b. an effective amount of a stabilizer comprising at least one phosphorus-containing compound selected from the group consisting of thiophosphates, butylated triphenylphosphorothionates, and organophosphates.
A composition comprising at least one fluoroolefin selected from the group consisting of HFC-1225ye, HFC-1234yf, HFC-1234ze, and HFC-1243zf;
- and an effective amount of stabilizer comprising at least one phosphorus-containing compound selected from the group consisting of thiophosphates, butylated triphenylphosphorothionates, and organophosphates;
- and any of the additional compounds selected from the group consisting of terpenes and terpenoids, fullerenes, epoxides, fluorinated epoxides, oxetanes, divinylterephthalate, diphenylterephthalate, and mixtures thereof, meaning mixtures of any of the foregoing additional compounds.
A composition comprising at least one fluoroolefin selected from the group consisting of HFC-1225ye, HFC-1234yf, HFC-1234ze, and HFC-1243zf;
- and an effective amount of stabilizer comprising at least one phosphorus-containing stabilizer compound selected from the group consisting of thiophosphates, butylated triphenylphosphorothionates, and organophosphates:
- and at least one amine.
A method for stabilizing a composition comprising at least one fluoroolefin, said method comprising adding an effective amount of a stabilizer comprising a phosphorus-containing compound selected from the group consisting of thiophosphates, butylated triphenylphosphorothionates, and organophosphates.
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 phosphorus-containing stabilizer compound selected from the group consisting of thiophosphates, butylated triphenylphosphorothionates, and organophosphates 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 stabilizer comprising at least one phosphorus containing stabilizer compound selected from the group consisting of thiophosphates, butylated triphenylphosphorothionates, and organophosphates to the composition comprising at least one fluoroolefin.
Dependencies are inferred from the claim text.