Process for the manufacture of consolidated shaped structures of cellulose hydrate

US3937672A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Walter Busch
• Klaus-Dieter Hammer · Mainz, DE
• Wolfgang Klendauer

Key dates

• Filing date: Sep 20, 1973
• Grant date: Feb 10, 1976
• Expiry date: Sep 20, 1993

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/21
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

This invention relates to a process for the preparation of a cellulose hydrate moulding which comprises (a) treating a cellulose hydrate moulding while in the gel state, for a period within the range of from 10 seconds to 20 minutes, with an aqueous liquid having dissolved therein at least one plasticizer, a chemical cross-linking agent comprising at least one cyclic urea compound having at least 2 N-methylol groups, and at least one cross-linking catalyst, (b) drying the moulding to a residual water content of from 8 to 12% by weight, and (c) heating the moulding at a temperature within the range of from 100.degree. to 150.degree.C for a period of from 30 seconds to 20 minutes. The invention also relates to a cellulose hydrate moulding prepared by the novel process.