Method for producing carbon fibers from cellulose fibers treated with sulfonic acid salts

US10995429B2 · kind B2 · utility

Assignee

• DEUTSCHE INSTITUTE FÜR TEXTIL-UND FASERFORSCHUNG DENKENDORF · DE

Inventors

• Falko Abels · Ludwigshafen, DE
• Martin Merger · Bischofswerda, DE
• Tomasz Cwik · Mannheim, DE
• Klemens Massonne · Bad Dürkheim, DE
• Johanna Sporl · Stuttgart, DE
• Frank Hermanutz · Leonberg, DE
• Michael R. Buchmeiser · Rollhof, DE

Key dates

• Filing date: Feb 1, 2017
• Grant date: May 4, 2021
• Expiry date: Jan 18, 2038

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D06M2101/06
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a process for producing carbon fibers from cellulosic fibers, characterized in that cellulosic fibers, which contain a sulfonic acid salt of formula (I), wherein R1 represents a hydrocarbon group and K+ represents a cation, are converted into carbon fibers.