Reactive cellulose and method for making same

US6392035B1 · kind B1 · utility

Assignee

• RHODIA ACETOW GMBH · DE

Inventors

• Ties Karstens · Reutlingen, DE
• Armin Stein · Kenzingen, DE
• Hans Steinmeier · Waldenbuch, DE

Key dates

• Filing date: Nov 10, 1999
• Grant date: May 21, 2002
• Expiry date: Nov 10, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08B11/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention concerns reactive cellulose, i.e. cellulose having in particular a very low degree of crystallinity obtainable with a high degree of purity. Said novel reactive cellulose is particularly used as raw material for making cellulose ethers. The invention is characterized in that the reactive cellulose is substituted by organic groups according to a degree of substitution, DS, of less than 0.2, preferably between 0.04 and 0.2.