Hydrogenation of polytrimethylene ether glycol

US7342142B2 · kind B2 · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Hari Babu Sunkara · Hockessin, US
• Mayis Seapan · Landenberg, US
• George F. Diffendall · Wilmington, US
• Francis G. Gallagher · Wilmington, US

Key dates

• Filing date: Aug 5, 2003
• Grant date: Mar 11, 2008
• Expiry date: Mar 15, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2650/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

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.