The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 05, 1999
Filed:
Aug. 05, 1998
Helmut Schwind, Hanau, DE;
Wolfgang Janas, Geiselbach, DE;
Klaus Dorn, Hanau, DE;
Peter Kempf, Rodenbach, DE;
Dietmar Wandel, Hanau, DE;
Joachim Cziollek, Mainz, DE;
Ulrich Thiele, Bruchkobel, DE;
Alexander Klein, Ingelheim, DE;
Heinz-Dieter Schumann, Maintal, DE;
Degussa Aktiengesellschaft, Frankfurt, DE;
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##