Patent · US Active

Method for stabilizing lignin fiber for further conversion to carbon fiber

US11286582B2 · kind B2 · utility

0Cited by

8References

9Claims

0Family size

Assignee

RISE INNVENTIA AB · SE

Inventors

Elisabeth Sjöholm · Märsta, SE
Goran Gellerstedt · Sollentuna, SE
Rickard Drougge · Märsta, SE
Ida Norberg · Sollentuna, SE

Key dates

Filing date	Jan 21, 2013
Grant date	Mar 29, 2022
Priority date	—
Expiry date	Apr 19, 2036

Classification

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

Abstract

A method for producing a stabilized lignin fiber from softwood alkaline lignin by heat treatment in the absence of oxidant is disclosed. The stabilized lignin fiber can be further treated to obtain carbon fiber.

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