The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 2021
Filed:
Oct. 06, 2016
Applicant:
Stora Enso Oyj, Helsinki, FI;
Inventors:
Niklas Garoff, Skarholmen, SE;
Robert Protz, Potsdam, DE;
Jens Erdmann, Berlin, DE;
Johannes Ganster, Potsdam, DE;
Andre Lehmann, Potsdam, DE;
Assignee:
Stora Enso OYJ, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F 9/17 (2006.01); D01D 5/06 (2006.01); D01F 2/02 (2006.01); C08L 97/00 (2006.01); D01F 9/16 (2006.01); D01F 9/00 (2006.01); C08L 1/02 (2006.01);
U.S. Cl.
CPC ...
D01F 9/17 (2013.01); C08L 1/02 (2013.01); C08L 97/00 (2013.01); C08L 97/005 (2013.01); D01D 5/06 (2013.01); D01F 2/02 (2013.01); D01F 9/00 (2013.01); D01F 9/16 (2013.01); C08L 2203/12 (2013.01); D10B 2201/00 (2013.01);
Abstract
The present invention relates to a method for manufacturing a shaped body comprising lignin which may be further processed into intermediate carbon fibers and finally also carbon fibers. Uses of said fibers are also disclosed. The present invention addresses the problem of lignin leaching into a precipitation bath. The solution to this problem is a novel method for minimizing the loss of lignin through the addition of certain salts into the precipitation bath.