Honeywell International Inc.

Alliedsignal Inc.

Clayton Herbert Carson

Hsueh Sung Tung

Hang Thanh Pham

Rajiv R Singh

David John Williams

Mary Charlotte Bogdan

Peter B Logsdon

Leslie Bruce Bement

Kevin D Uhrich

Ronald Riegal

Zenart Joseph Dziadyk

Daniel Chistopher Merkel

This invention provides azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and water that are environmentally desirable for use as refrigerants, aerosol propellants, metered dose inhalers, blowing agents for polymer foam, heat transfer media, and gaseous dielectrics.

Azeotrope-like compositions of pentafluoropropane and water

Disclosed is an improved HFC manufacturing processes of the type which produces an intermediate product stream that includes a mixture of HF and at least one compound, usually an HCFC, which is relatively resistant to further fluorination. The improvement involves separating the unreactive compound(s) from the product stream, preferably using liquid:liquid phase separation, and substantially avoiding recycle of the unreactive compound to the fluorination reaction. The separated unreactive compound(s) are substantially free of HF.

Process for the manufacture of fluorocarbons

An integrated manufacturing process for producing HFC-245fa, HFC-236fa or a mixture thereof by reaction of HCC-240fa, HCC-230 or a mixture thereof with HF. HCC-240fa, HCC-230 or a mixture thereof is reacted with hydrogen fluoride in a liquid phase in the presence of a fluorination catalyst. Optionally, produced HCl is removed by distillation. HF present is thereafter recovered by liquid-vapor extraction. Unsaturated compounds are then removed by photochlorination and HFC-245fa, HFC-236fa or a mixture thereof is obtained by distillation.

Process for the manufacture of 1,1,1,3,3-pentafluoropropane and

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Erie County, NY, United States of America

Clayton Herbert Carson