Imperial Chemical Industries Limited

David William Bonniface

John David Scott

Michael John Watson

Richard Llewellyn Powell

Paul Nicholas Ewing

Charles John Shields

Paul David Bujac

Removal of water from process streams

A process for the co-production of two or more hydrofluoroalkanes which comprises contacting an alkene or a halogenated alkane with hydrogen fluoride at elevated temperature in the presence of a fluorination catalyst to produce a first hydrofluoroalkane and wherein an organic precursor to a second hydrofluoroalkane is provided in the process whereby to produce a second hydrofluoroalkane in addition to the first hydrofluoroalkane. In particularly preferred embodiments of the process, the first hydrofluoroalkane is 1,1,1,2-tetrafluoroethane derived from 1-chloro-2,2,2-trifluoroethane or trichloroethylene and the second hydrofluoroalkane is one or more of pentafluoroethane, difluoromethane and 1,1,2,2-tetrafluoroethane.

Production of hydrofluoroalkanes

Production of difluoromethane

Growing community of inventors

Cheshire, United Kingdom

David William Bonniface