Producing spinnable and dyeable polyester fibers

US10202712B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Pia Baum · Weinheim, DE
• Klaus Scheuermann · Schifferstadt, DE

Key dates

• Filing date: Jul 27, 2010
• Grant date: Feb 12, 2019
• Expiry date: Feb 27, 2032

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06P3/36
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The present invention relates to a process for producing dyed polyester fibers (C) from a terephthalate polyester (A), at least one polyester-containing additive (B) and optionally at least one component (G). The polyester-containing additive is obtainable by condensation of the monomers of an aliphatic 1,ω-diol, of an aliphatic 1,ω-dicarboxylic acid and of an aromatic 1,ω-dicarboxylic acid. Optionally, chain extenders (V) are also used in the production of the polyester-containing additive (B). For fiber production, the components (A), (B) and optionally (G) are mixed, melted in an extruder and extruded through spinneret dies. These polyester fibers (C) are preferably used in the production of dyed textile fabrics (F).