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:
Jul. 20, 2021
Filed:
Dec. 21, 2017
Applicant:
Södra Skogsägarna Ekonomisk Förening, Växjö, SE;
Inventors:
Jim Parkås, Varberg, SE;
Harald Brelid, Gothenburg, SE;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
D21C 9/02 (2006.01); D21C 3/26 (2006.01); D21C 1/02 (2006.01); D21C 3/02 (2006.01); D21C 9/18 (2006.01); D21C 11/00 (2006.01);
U.S. Cl.
CPC ...
D21C 3/263 (2013.01); D21C 1/02 (2013.01); D21C 3/022 (2013.01); D21C 3/026 (2013.01); D21C 9/02 (2013.01); D21C 9/18 (2013.01); D21C 11/0007 (2013.01);
Abstract
A method for manufacturing dissolving pulp using wood material is disclosed. The method comprises The wood material can be a coniferous wood material, and whereby the mild hydrothermal treatment is performed to reach a P-factor of from 100-300, and whereby the cold caustic extraction is executed to reach a combined concentration of anhydromannose and anhydroxylose of 5 weight %, or less, of the carbohydrate content of the pulp product.