Alliedsignal Inc.

Allied Corporation

Allied Chemical Corporation

Earl A Lund

David Paul Wilson

Ian R Shankland

Rajat S Basu

Hang Thanh Pham

Robert Gerard Richard

Ellen L Swan

Hillel Magid

Rajiv R Singh

Peter B Logsdon

Robert Christian Parker

Barbara Ruth Decaire

John K Bonner

Raymond Hilton Thomas

Kane David Cook

Leonard M Stachura

Sabatino R Orfeo

Robert L Ostrozynski

Gary Michael Knopeck

John W Pelava

Philip E Jones

Theodore Atwood

Logsdon, Peter B

Rajin R Singh

Barbara R Fellows

Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and at least one hydrocarbon selected from the group n-pentane, iso-pentane, cyclopentane, n-hexane and iso-hexane are provided. The compositions of the invention are useful in the preparation of polyurethane and polyisocyanurate foams.

Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and pentane

Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and 1,1-dichloro-1-fluoroethane are provided. The compositions of the invention are useful in the preparation of polyurethane and polyisocyanurate foams and as aerosol propellants.

Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and

Azeotrope-like compositions comprising trifluoromethane and carbon dioxide or trifluromethane, hexafluoroethane and carbon dioxide are stable and have utility as refrigerants for heating and cooling as well as fire extinguishing compositions.

Azeotrope-like compositions of trifluoromethane and carbon dioxide or

Compositions comprising difluoromethane, 1,1,1,2-tetrafluoroethane and a member selected from the group consisting of 1,1-difluoroethane, 1,1,1-trifluoroethane, propane and dimethyl ether having a vapor pressure from about 12.2 psia to about 18.4 psia at -40.degree. F., are useful as refrigerants.

Refrigerant compositions

Azeotrope-like compositions comprising trifluoromethane, carbon dioxide and sulfur hexafluoride are stable and have utility as refrigerants for heating and cooling.

Azeotrope-like compositions of trifluoromethane, carbon dioxide and

Azeotrope like compositions comprising 1,1,2,3,3,-pentafluoropropane and methanol or ethanol and optionally nitromethane are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.

Azeotrope-like compositions of 1,1,2,3,3-pentafluoropropane

Azeotrope-like compositions comprising pentafluoroethane and 1,1,1-trifluoroethane are stable and have utility as refrigerants for heating and cooling.

Azeotrope-like compositions of pentafluoroethane and

A method of cleaning a solid surface is disclosed. The method involves spraying the solid surface with azeotrope-like compositions by using a propellant. The azeotrope-like compositions comprise from about 93.0 to about 98.0 weight percent 1,1-dichloro-1-fluoroethane, from about 7 to about 2 weight percent methanol, and from about 0.1 to about 0.01 weight percent nitromethane. Preferably, the propellant is selected from the group consisting of hydrocarbons, chlorofluorocarbons, hydrochlorofluorocarbon, hydrofluorocarbon, dimethyl ether, carbon dioxide, nitrogen, nitrous oxide, methylene oxide, air, and mixtures thereof.

Method of cleaning using azeotrope-like compositions of

Stable azeotrope-like compositions comprising dichlorotrifluoroethane, cyclopentane and nitromethane which are useful in a variety of industrial cleaning applications.

Azeotrope-like compositions of dichloro-trifluoroethane, cyclopentane

Stable azeotrope-like compositions of 1,1,2-trichloro-1,2,2-trifluoroethane, nitromethane, 1,2-dichloroethylene and an alkanol which are useful in a variety of industrial cleaning applications.

Azeotrope-like compositions of 1,1,2-trichloro-1,2,2-trifluoroethane,

Premixes of a polyol suitable for polyurethane or polyisocyanurate foam preparation and 1,1-dichloro-1-fluoroethane require no stabilizer to inhibit reaction between the fluorocarbon and the polyol. These premixes are useful for polyurethane and polyisocyanurate foam preparation.

Polyol-blowing agent compositions with improved storage stability

Azeotrope-like compositions of pentafluoroethane and difluoromethane useful for heating and cooling applications.

Azeotrope-like compositions of pentafluoroethane and difluoromethane

Azeotrope-like compositions comprising 1,1,2-trichloro-1,2,2-trifluoroethane, methanol, nitromethane, 1,2-dichloroethylene and hexane. These mixtures are useful in a variety of vapor degreasing applications and as solvents in a variety of industrial cleaning applications including defluxing of printed circuit boards.

Azeotrope-like compositions comprising 1,1,2-trichloro-1,2,2-trifluoroethane, methanol, nitromethane, 1,2-dichloroethylene, acetone and hexane. These mixtures are useful in a variety of vapor degreasing applications and as solvents in a variety of industrial cleaning applications including defluxing of printed circuit boards.

Azeotrope-like compositions of 1,1,2-trichloro-1,2,3-trifluoroethane,

Azeotrope-like compositions of penetafluorodimethyl ether and monochlorodifluoromethane useful for heating and cooling applications.

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West Seneca, NY, United States of America

Earl A Lund