Method for preparing a regenerated cellulose fibre or yarn

US6555678B1 · kind B1 · utility

Assignee

• RHODIA ACETOW GMBH · DE

Inventors

• Christian Allandrieu · Villeurbanne, FR
• Lucile Gambut · Val-de-Reuil, FR
• Philippe Karrer · Val-de-Reuil, FR
• Ties Karstens · Reutlingen, DE
• Gerard Mignani · Val-de-Reuil, FR
• Armin Stein · Kenzingen, DE

Key dates

• Filing date: Sep 25, 2000
• Grant date: Apr 29, 2003
• Expiry date: Sep 25, 2020

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01F2/00
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A method has been developed for making regenerated cellulose yarn. The method includes the steps of spinning a solution derived from cellulose or a cellulose derivative in a molten state through at least one extrusion die, then regenerating the cellulose by treating the resulting yarn, wherein a silylated cellulose derivative is prepared by reaction with a silylating agent; the silylated cellulose is extracted from the synthesis reaction medium; then spun through at least an extrusion die; and the resultant yarn treated with a desilylation agent to regenerate the cellulose and a siloxane. The resulting cellulose yarns or fibers may be used for making woven or knitted textile surfaces or non-woven surfaces. Said yarns or fibers are also useful as reinforcing fibers in elastomeric materials and more particularly, in tires.