Production of polyol polyesters having reduced color content

US4931552A · kind A · utility

Assignee

• The Procter & Gamble Company · US

Inventors

• Michael Steven Gibson · Loveland, US
• Larry Nelson Hawkins · Cincinnati, US
• Marjorie Mossman Peffly · Cincinnati, US
• Corey James Kenneally · Lebanon, US
• Patrick Joseph Corrigan · Cincinnati, US

Key dates

• Filing date: Jun 14, 1989
• Grant date: Jun 5, 1990
• Expiry date: Jun 14, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07H13/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

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.