Process for the production of a cellulose suspension

US5656224A · kind A · utility

Assignee

• LENZING AKTIENGESELLSCHAFT · AT

Inventors

• Stefan Zikeli · Regau, AT
• Peter Hinterholzer · Neumarkt am Wallersee, AT

Key dates

• Filing date: Jun 5, 1995
• Grant date: Aug 12, 1997
• Expiry date: Jun 5, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2301/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention is concerned with a process for the production of a suspension of cellulose in a liquid, aqueous tertiary amine-oxide, wherein shredded cellulose is mixed with the liquid, aqueous tertiary amine-oxide, said process comprising: (A) contacting the shredded cellulose with the liquid, aqueous tertiary amine-oxide, a first mixture being prepared, and (B) spreading this first mixture mechanically as a layer on a surface and transporting it along this surface while intensively being mixed, until a homogeneous suspension is produced which is removed from the surface, wherein (C) measures (A) and (B) are carried out continuously.