Patent · US Active

Method of producing carbon fibers, and methods of making protective clothing and a filter module

US7708805B2 · kind B2 · utility

8Cited by

14References

18Claims

0Family size

Assignee

SGL Carbon AG · DE

Inventors

Michael Heine · Meitingen, DE
Richard Neuert · Kelheim, DE
Rainer Zimmermann-Chopin · Meitingen, DE

Key dates

Filing date	Jan 22, 2007
Grant date	May 4, 2010
Priority date	—
Expiry date	Aug 11, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02C20/40
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Porous carbon fibers, whose active centers are formed by pores that are filled at least in part by carbon and/or metal and/or metal carbide, obtainable by carbonization of organic or inorganic polymers, the use thereof for the adsorption or separation of gaseous substances, in particular of CO2, and also a method for the production thereof. First, a spinning mixture containing polyacrylonitrile-based polymer A and an organic or metallo-organic polymer B is produced. Next, the spinning mixture is spun to form mixed fibers of polymer A and polymer B. The mixed fiber is stabilized by oxidation. This is followed by carbonization or graphitization of the mixed fiber under non-oxidizing conditions in such a way that the polymer B forms a carbon and/or metal and/or metal carbide residue of at least 22 wt %, the residue forming active centers.

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