The Procter Gamble Company

Richard M King

Ted J Logan

Patrick Joseph Corrigan

Vicki L Weber

Scott A VanDiest

Joseph S Boggs

Fatty materials are hydrogenated in a plate heat exchanger at a pressure above about 150 psig. The use of high pressure and high shear as provided by the appropriate surface to volume ratio and pressure drop in the heat exchanger, enables the fatty material to be efficiently hydrogenated, and for touch hardening the temperature can be reduced to minimize the formation of trans-isomers.

Hydrogenation in a plate heat exchanger

Spent copper 'chromite' catalyst from the hydrogenation of carboxylic acids or esters of such acids is regenerated by vacuum treatment at high temperature to reduce the level of organic residue on the catalyst to less than about 25%, followed by oxidation.

Regeneration of copper chromite hydrogenation catalyst

N,N-disubstituted amides are hydrogenated to tertiary amines in the presence of a catalyst system comprising copper chromite and zeolite.

Catalytic hydrogenation of N,N-disubstituted amides to amines

Triglyceride mixture is fractionated (on the basis of Iodine Value) utilizing selected surface aluminated silica gel adsorbent and selected solvent(s).

Fractionation of triglyceride mixture

Alkyl fatty carboxylate mixture is separated according to degree of unsaturation utilizing selected surface aluminated silica gel adsorbent and selected solvent(s).

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Cincinnati, OH, United States of America

Richard M King