Process for the preparation of low molecular weight polysaccharide ethers

US5708162A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Josef Hilbig · Taunusstein, DE
• Reinhard Doenges · Bad Soden, DE

Key dates

• Filing date: Apr 4, 1995
• Grant date: Jan 13, 1998
• Expiry date: Apr 4, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08B31/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Process for the preparation of low molecular weight polysaccharide ethers which can be employed in binders for improving adhesive power and film-forming properties, by oxidative degradation of relatively high molecular weight polysaccharide ethers, which comprises initially introducing a relatively high molecular weight polysaccharide ether in suspension (e.g. in a slurry), adding a perborate or a mixture of perborate and perborate activator, and carrying out the oxidative degradation at a temperature of between 25.degree. and 90.degree. C.