The Dow Chemical Company

Wallace E Embrey

Loren L Swearingen

Garnet E McConchie

Randy J LaTulip

Norman L Dean

Jim D Earls

Craig W Snook

John Thomas Marshall

Alfred W Heinsohn

Process for the production of 2,4,6-trimethyl pyridine wherein acetone or an acetone derivative is reacted under pressure with ammonia in the presence of a metallic catalyst to form mixture of products with a high preparation of 2,4,6-trimethyl pyridine and recovering the trimethyl pyridine.

Single pass process for making trimethyl pyridine

Distillation of the heavy waste stream from the manufacture of phenol via the cumene process provides an overhead stream containing phenol, acetophenone and 2-phenyl propionaldehyde. Extraction of the overhead stream with aqueous caustic removes the phenol and subsequent distillation of the remaining two components in the presence of a catalytic amount of caustic provides a substantially pure acetophenone distillate.

Acetophenone recovery and purification

Tetrachloropyridine is prepared by heating pentachloropyridine in an aqueous medium under pressure, with agitation, in the presence of a particulate oxidizable metal, e.g., zinc and a hydrogen-producing acid, e.g., hydrogen chloride. The tetrachloropyridine is then conveniently extracted with an inert, water-immiscible solvent, e.g., a halogenated hydrocarbon.

Preparation of tetrachloropyridine

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Freeport, TX, United States of America

Wallace E Embrey