Process for the processing of polymer mixtures into filaments

US5993712A · kind A · utility

Assignee

• Lurgi Zimmer GmbH · DE

Inventors

• 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: Jul 28, 1998
• Grant date: Nov 30, 1999
• Expiry date: Jul 28, 2018

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01F6/90
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The invention concerns a method of processing polymer blends based on polyester or polyamide with a draw-off speed of .gtoreq.1500 m/min to produce filaments with an elongation at break of .ltoreq.180%, where a second amorphous polymer is added to the polyester or polyamide in the amount of 0.05 to 5 wt % and the polymer is a copolymer composed of at least two of the following monomer units: PA1 0 to 90 wt % A, wherein A is a monomer of formula CH.sub.2 .dbd.C(R)--COOR.sup.1, wherein R is --H or --CH.sub.3 and R.sup.1 is straight or branched chain C.sub.1 -C.sub.10 alkyl or cyclohexyl. PA1 0 to 40 wt % B, wherein B is a monomer of maleic acid or maleic anhydride, and PA1 5 to 85 wt % C, wherein C is a monomer of styrene or methyl substituted styrene such that (wt % A+wt % B+wt % C)=100, and these filaments are processed by a drawing process or a stretch texturing process at high speeds. Preferably R.sup.1 is methyl, ethyl, n-propyl, n-butyl, iso-butyl, 2-ethyl-butyl, 2-ethyl hexyl, n-hexyl, n-heptyl, or cyclohexyl. Preferably, C is styrene, .alpha.-methyl styrene, 3-methyl styrene, or 4-methyl styrene. Most preferably C is styrene.