Pennwalt Corporation

Atochem North America, Inc.

Paul J McElligott, Jr

David M Gardner

Stanley R Sandler

Roger T Clark

William J Tuszynski

John F Kennoy

A process for dissolving wax, paraffin and/or sulfur deposits in an oil or gas pipeline or well comprises providing at the site of the deposit an acid and a compound which liberates carbon disulfide upon contact with the acid, whereby the deposit is dissolved by the liberated carbon disulfide.

Method for dewaxing oil and gas pipelines or wells

The process for preparing aliphatic and aromatic amines by reacting an olefin with either ammonia, a primary amine, or a secondary amine at elevated temperature in the presence of an ammonium halide catalyst, preferably a catalyst-promoter combination, is disclosed herein.

Process for preparing amines from olefins with ammonium halide catalysts

Crude, liquid organosulfonyl chloride is purified by first scrubbing the crude liquid with an aqueous hydrochloric acid solution, separating the scrubbing solution and then subjecting the scrubbed organosulfonyl chloride to vacuum stripping while sweeping the material being stripped with an inert gas.

Purification of crude, liquid organosulfonyl chloride

Aliphatic, cycloaliphatic, heterocyclic aliphatic and aromatic amines are prepared in a liquid phase reaction under the influence of light energy in the presence of a specified ammonium halide photocatalyst whereby addition of N--H bonds from ammonia or a primary or secondary amine occurs across the double bond of an olefin.

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Abington, PA, United States of America

Paul J McElligott, Jr