Process for preparing polyester fine filaments

US5250245A · kind A · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Robert J. Collins · Wilmington, US
• Hans R. E. Frankfort · Greenville, US
• Stephen B. Johnson · Wilmington, US
• Benjamin H. Knox · Wilmington, US
• Elmer E. Most, Jr. · Kinston, US

Key dates

• Filing date: Feb 10, 1993
• Grant date: Oct 5, 1993
• Expiry date: Feb 10, 2013

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D02G3/02
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

Polyester fine filaments having excellent mechanical quality and uniformity, and preferably with a balance of good dyeability and shrinkage, are prepared by a simplified direct spin-orientation process by selection of polymer viscosity and spinning conditions.