Biologically degradable compositions

US7825163B2 · kind B2 · utility

Assignee

• Cognis IP Management GmbH · DE

Inventors

• Uwe Held · Velbert, DE
• Carsten Baumann · Monheim, DE
• Sandra Heldt · Erkrath, DE
• Horst-Dieter Schares · Erkrath, DE
• Andreas Willing · Erkrath, DE

Key dates

• Filing date: Oct 24, 2002
• Grant date: Nov 2, 2010
• Expiry date: Feb 22, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/911
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for making a biodegradable composition involving: (a) providing from about 20 to 80% by weight of C8-22 fatty alcohol; (b) providing from about 20 to 80% by weight of a ring opening product of a C8-18 1,2-epoxyalkane with ethylene glycol; (c) combining (a) and (b) to form a reaction mixture; and (d) reacting the reaction mixture with ethylene oxide, with the proviso that the ethylene oxide is used in an amount of from about 5 to 100 mol ethylene oxide per mol of free OH groups present in the reaction mixture.