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:
Oct. 25, 2022
Filed:
Jul. 03, 2017
Applicant:
Stora Enso Oyj, Helsinki, FI;
Inventors:
Kaj Backfolk, Villmanstrand, FI;
Isto Heiskanen, Imatra, FI;
Esa Saukkonen, Lappeenranta, FI;
Katja Lyytikäinen, Imatra, FI;
Heidi Saxell, Stockholm, SE;
Assignee:
Stora Enso OYJ, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 13/04 (2006.01); C08B 11/12 (2006.01); C08B 15/04 (2006.01); D21H 11/18 (2006.01); D21C 9/00 (2006.01); C08L 1/02 (2006.01);
U.S. Cl.
CPC ...
D21H 11/18 (2013.01); C08B 11/12 (2013.01); C08B 15/04 (2013.01); C08L 1/02 (2013.01); D21C 9/002 (2013.01); D21C 9/007 (2013.01); D21H 13/04 (2013.01);
Abstract
The present invention relates to a method for manufacturing an intermediate product that can be stored and transported and efficiently converted into microfibrillated cellulose with limited energy input at the time of conversion. More specifically, the invention involves the use of dewatered carboxymethylcellulose or carboxylated cellulose fiber having a low degree of substitution and a high amount of additives.