Skip to Content
Find More Like This
Return to Search

TWO-STEP SULFONATION PROCESS FOR THE CONVERSION OF POLYMER FIBERS TO CARBON FIBERS

United States Patent Application

20150152574
A1
View the Complete Application at the US Patent & Trademark Office
Disclosed herein are processes for preparing carbon fibers, comprising: sulfonating a polymer fiber with a sulfonating agent that is fuming sulfuric acid, sulfuric acid, chlorosulfonic acid, or a combination thereof; treating the sulfonated polymer with a heated solvent, wherein the temperature of the heated solvent is at least 95.degree. C.; and carbonizing the resulting product by heating it to a temperature of 501-3000.degree. C. Carbon fibers prepared according to these methods are also disclosed herein.
Barton, Bryan E. (Midland, MI), Patton, Jasson T. (Midland, MI), Hukkanen, Eric J. (Midland, MI), Bernius, Mark T. (Bowling Green, OH)
14/ 413,454
July 3, 2013
STATEMENT OF GOVERNMENT INTEREST [0001] This invention was made under a NFE-10-02991 between The Dow Chemical Company and UT-Batelle, LLC, operating and management Contractor for the Oak Ridge National Laboratory operated for the United States Department of Energy. The Government has certain rights in this invention.