Process for producing polyarylene sulfide fiber and thereby obtainable polyarylene sulfide multifilament yarn

US5372760A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Herbert Wellenhofer · Bobingen, DE
• Werner Bruckner · Kriftel, DE
• Andreas Fischer · Heppenheim, DE
• Gerhard Leumer · Bobingen, DE

Key dates

• Filing date: Jun 18, 1993
• Grant date: Dec 13, 1994
• Expiry date: Jun 18, 2013

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01F6/765
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A process for producing fiber from polyarylene sulfide, by melt spinning a polyarylene sulfide into a gas, cooling the spun filaments with a blown gas, taking the filaments off at a high speed, storing the spun filaments, drawing the spun filaments in two stages and after treatment stage, and immediately thereafter heat setting the drawn filaments. Fibers produced by the invention have excellent mechanical properties including tensile strength and transverse strength, and the process is very efficient.