Process for the manufacture of a precursor yarn

US12234577B2 · kind B2 · utility

Assignee

• Stora Enso OYJ · FI

Inventors

• Niklas Garoff · Härnösand, SE
• Robert Protz · Potsdam, DE
• Jens Erdmann · Michendorf, DE
• Johannes Ganster · Potsdam, DE
• André Lehmann · Potsdam, DE

Key dates

• Filing date: Oct 6, 2016
• Grant date: Feb 25, 2025
• Expiry date: Feb 25, 2040

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01F9/22
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The present invention relates to a method for manufacturing precursor yarn comprising lignin, which may be further processed into intermediate carbon fibers and finally also carbon fibers. It also relates to carbon fibers and uses of said fibers. Said method involves applying a water-free spin finish.