E.i. Dupont De Nemours and Company

George Francis Diffendall

Mayis Seapan

Tyler T Ames

Hari Babu Sunkara

F Glenn Gallagher

Robert E Trotter

Robert Clayton Wheland

Carl G Krespan

Francis G Gallagher

Thomas William Harding

Joseph Norman Hockman

Matthew John Targett

A process comprising contacting PO3G having color with hydrogen in the presence of a hydrogenation catalyst, wherein the PO3G, after hydrogenation, has a APHA color of less than about 50.

Hydrogenation of polytrimethylene ether glycol

The invention discloses a hydrogenation process for removing impurities and controlling acid for use in downstream processing of biochemically-derived 1,3-propanediol. Preferably, the biochemically-derived 1,3-propanediol, before the contacting, has an initial color and, after the contracting, has a color that is lower than the initial color.

Purification of biochemically derived 1,3-propanediol

Hydrogenation of biochemical derived 1,3 -propanediol

Disclosed is a process comprising contacting chemical 1,3-propanediol with hydrogen in the presence of a hydrogenation catalyst. Preferably, the chemical 1,3-propanediol, before the contacting has an initial color and, after the contacting, has a color that is lower than the initial color.

Hydrogenation of chemically derived 1,3-propanediol

Purification of chemical 1,3-propanediol

A process for the faster manufacturing of hydrocarbon, fluorocarbon and chlorocarbon acyl peroxides is disclosed wherein a hydroxide, a peroxide and an acyl halide are reacted under continuous vigorous agitation conditions so as to bring the reaction to substantial completion is less than one minute.

Process for preparing peroxides

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Wilmington, DE, United States of America

George Francis Diffendall