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:
Sep. 05, 1989
Filed:
May. 05, 1987
Applicant:
Inventor:
Wendel L Burton, Anderson, SC (US);
Assignee:
BASF Corporation, Williamsburg, VA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D01F / ;
U.S. Cl.
CPC ...
2642106 ; 2642108 ; 264211 ; 26421114 ;
Abstract
A high speed process for producing polyamide filaments utilizing one or more melt additives selected from the group consisting of water, alcohols, and organic acids to form a homogeneous polyamide-additive mixture so that upon extrusion of the mixture the polyamide has a relative viscosity in the range of from about 2.0 to about 3.0, melt-extruding the mixture to form filaments, quenching and drawing the filaments, and taking up the filaments at a speed greater than 4000 mpm. The process improves package build, yarn quality, and yarn processing conditions, and enables low elongations, high tenacity, and higher production speeds.