E.i. Dupont De Nemours and Company

Diana Lynn Klug

Barbara Haviland Minor

Donna Marie Patron

Allen Capron Sievert

Tuneen E Chisolm

Tuneen Chisolm-Carter

Brooks Shawn Lunger

Mark B Shiflett

Akimichi Yokozeki

Johannus H Van Mil

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

Compositions of 2,2-dichloro-1,1,1-trifluoroethane and 1,1,2,2,3-pentafluoropropane, 1,1,2,3,3-pentafluoropropane or 1,1,1,2,3-pentafluoropropane.

Compositions of 2,2-dichloro-1,1,1-trifluoroethane and pentafluoropropane

A process for purification of adipic acid during crystallization by modifying the crystal morphology to decrease incorporation of impurities through the introduction of an effective amount of an additive to the crystallizing solution.

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Wilmington, DE, United States of America

Diana Lynn Klug