Process for processing polymer mixtures to filaments

US5962131A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Helmut Schwind · Hanau, DE
• Wolfgang Janas · Geiselbach, DE
• Klaus Dorn · Kettwig, DE
• Peter Kempf · Bad Oldesloe, DE
• Dietmar Wandel · Hanau, DE
• Joachim Cziollek · Elsenfeld, DE
• Ulrich Thiele · Bruchköbel, DE
• Alexander Klein · Troisdorf, DE
• Heinz-Dieter Schumann · Maintal, DE

Key dates

• Filing date: Aug 5, 1998
• Grant date: Oct 5, 1999
• Expiry date: Aug 5, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2913
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Process for the production of preoriented filaments from polyester-based polymer mixtures by spinning the polymer mixtures with a draw-off speed v of at least 2500 m/min, a second amorphous, thermoplastically processable copolymer having a glass transition temperature of more than 100.degree. C. being added to the polyester, wherein the ratio of the melt viscosity of the copolymer to the melt viscosity of the polyester is 1:1 to 10:1, in that the amount of copolymer added to the polyester is at least 0.05 wt. %, in that the maximum amount M of the copolymer added to the polyester depends on the draw-off speed v, and in that ##EQU1##