Patent · US Active

Method for the production of lignin-containing precursor fibres and also carbon fibres

US10006152B2 · kind B2 · utility

1Cited by

9References

13Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

André Lehmann · Potsdam, DE
Horst Ebeling · Premnitz, DE
Hans-Peter Fink · Teltow, DE

Key dates

Filing date	May 16, 2012
Grant date	Jun 26, 2018
Priority date	—
Expiry date	Oct 10, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/731
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for the production of a precursor for the production of carbon- and activated carbon fibers according to the wet- or air-gap spinning method, in which a solution of lignin and a fiber-forming polymer in a suitable solvent is extruded through the holes of a spinning nozzle into a coagulation bath, the formed thread is stretched and subsequently treated, dried at an elevated temperature and then wound up. The lignin-containing thread is an economical starting material for the production of carbon- and activated carbon fibers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.