E.i. Dupont De Nemours and Company

Donna Marie Patron

Barbara Haviland Minor

Diana Lynn Klug

Allen Capron Sievert

Tuneen E Chisolm

Tuneen Chisolm-Carter

Brooks Shawn Lunger

Tuneen E C Chisolm

This invention relates to compositions that include at least one fluoroether and at least one hydrofluorocarbon. Included in this invention are compositions of a cyclic or acyclic hydrofluoroether of the formula CFHOwherein a=2 or 3 and 3&#x2266;b&#x2266;8 and c=1 or 2 and a hydrofluorocarbon of the formula CFHwherein 1&#x2266;n&#x2266;4 and 1&#x2266;m&#x2266;8. Such compositions may be used as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.

Compositions of a hydrofluoroether and a hydrofluorocarbon

This invention relates to compositions that include at least one fluoroether and at least one hydrofluorocarbon. Included in this invention are compositions of a cyclic or acyclic hydrofluoroether of the formula C F H O wherein a&equals;2 or 3 and 3&lE;b&lE;8 and c&equals;1 or 2 and a hydrofluorocarbon of the formula C F H wherein 1&lE;n&lE;4 and 1&lE;m&lE;8. Such compositions may be used as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.

Compositions of a hydrofluoroether and HFC-32

Compositions of a fluoroether and a hydrofluorocarbon

This invention relates to compositions that include at least one fluoroether and at least one hydrofluorocarbon. Included in this invention are compositions of a cyclic or acyclic hydrofluoroether of the formula C.sub.a F.sub.b H.sub.2a+2-b O.sub.c wherein a=2 or 3 and 3.ltoreq.b.ltoreq.8 and c=1 or 2 and a hydrofluorocarbon of the formula C.sub.n F.sub.m H.sub.2n+2-m wherein 1.ltoreq.n.ltoreq.4 and 1.ltoreq.m.ltoreq.8. Such compositions may be used as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.

Azeotrope (like) compositions with difluoromethoxytetrafluoro-propane

Compositions are disclosed which include 1,1,2,2-tetrafluoroethane and a propane, tris(trifluoromethyl)amine, trifluoromethylsulfur pentafluoride or fluoroethane. The term propane includes compounds of the formula C.sub.3 F.sub.a H.sub.8-a wherein 0.ltoreq.a.ltoreq.8 as well as cyclic compounds of the formula C.sub.3 F.sub.b H.sub.6-b wherein 0.ltoreq.b.ltoreq.6. These compositions are useful as refrigerants, cleaning agents, expansion agents for polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, and displacement drying agents.

Compositions which include 1,1,2,2- tetrafluoroethane and fluoroethane

Compositions which include 1,1,2,2-tetrafluoroethane and fluoropropane

Azeotrope (like) composition with fluoromethyl trifluoromethyl ether and

Azeotrope(like) compositions of pentafluorodimethyl ether and

Refrigerant compositions include mixtures of bis(difluoromethyl) ether and a second component wherein the second component is 1-trifluoromethoxy-1,1,2,2-tetrafluoroethane, difluoromethoxy pentafluoroethane, 1-trifluoromethoxy-1,2,2,2-tetrafluoroethane, 1-trifluoromethoxy-2,2,2-trifluoroethane, tris(trifluoromethyl)amine, difluoromethyl sulfur pentafluoride, pentafluoroethyl sulfur pentafluoride, ammonia, butane or isobutane. The invention also relates to azeotropic or azeotrope-like compositions which comprise admixtures of effective amounts of bis(difluoromethyl) ether and 1-trifluoromethoxy-1,1,2,2-tetrafluoroethane, difluoromethoxy pentafluoroethane, 1-trifluoromethoxy-1,2,2,2-tetrafluoroethane, 1-trifluoromethoxy-2,2,2-trifluoroethane, tris(trifluoromethyl)amine, difluoromethyl sulfur pentafluoride, pentafluoroethyl sulfur pentafluoride, ammonia, butane or isobutane.

Refrigerant compositions including bis(difluoromethyl) ether

Producing refrigeration by evaporating the fluorocarbon refrigerants 1,1,1,2- and 1,1,2,2-tetrafluoro-2-(difluoromethoxy)ethane in the vicinity of a body to be cooled.

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Newark, DE, United States of America

Donna Marie Patron