Permanently plasticized, cellulose-based product

US4871791A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Klaus-Dieter Hammer · Mainz, DE
• Manfred Siebrecht · Wiesbaden, DE
• Hermann Winter · Marl, DE

Key dates

• Filing date: Apr 5, 1988
• Grant date: Oct 3, 1989
• Expiry date: Apr 5, 2008

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A22C13/0013
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

The cellulose-based product, in particular in the form of a film, contains in its wall a primary, permanent plasticizer of one or more crosslinked copolymers made from at least two components. One or more of these components are monomer units containing a terminal, ethylenically unsaturated, polymerizable group or compounds of maleic acid, or fumaric acid. A further component comprises units containing thermally crosslinked groups made from N-methylolamides of unsaturated carboxylic acids. A process is furthermore described for the production of this shaped product, in which the copolymer is metered into the viscose, and the N-methylolamide groups are thermally crosslinked with the cellulose.