The Procter Gamble Company

Larry Nelson Hawkins

Michael Steven Gibson

Donald Benjamin Appleby

Ronald Edward Pegoli

Vicki L Weber

Terry Franklin Formyduval

Junan Kao

Ephraim Lamar Kelly

Joseph Fredrich Sherman

Mary Celine Schneider

Corey James Kenneally

Patrick Joseph Corrigan

Marjorie Mossman Peffly

N-alkyl polyhydroxy alkyl amines such as N-methyl glucamine having a Gardner Color of less than 1 are reacted with sources of fatty acyl groups such as methyl esters, anhydrides, and/or fatty acids that have greater than 98% transmittance at 460 nm in organic hydroxy solvents such as methanol to prepare N-alkyl polyhydroxy amine amides with good color. The N-alkyl polyhydroxyamines can be purified by crystallization, and/or subjected to reductive bleaching, to provide superior color. The reaction is preferably carried out at low temperature for short periods of time and with low catalyst levels to minimize formation of cyclic products. The resulting amide product can be further purified by treatment with anionic and cationic exchange resins to remove soap and amine impurities. The anionic ion exchange resin can be readily regenerated by acidifying it followed by washing with an organic solvent.

Process for preparing amides of N-alkyl polyhydroxyalkyl amines

Process for preparing amides of N-alkyl polyhydroxyalkyls

Polyol polyesters having reduced color content are prepared by base-catalyzed transesterification of lower (i.e., C.sub.1 -C.sub.3) alkyl fatty esters having a carbonyl content of less than about 200 ppm with polyols. The esters can be prepared by a pretreatment comprising distilling the said alkyl fatty esters (in a liquid state), preferably with a base, and discarding both the top cut in an amount that is about 5% or less and at least about 2% of the still bottoms.

Production of polyol polyesters having reduced color content

Growing community of inventors

Cincinnati, OH, United States of America

Larry Nelson Hawkins