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:
Feb. 14, 2017
Filed:
Aug. 06, 2014
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Christian Jehn-Rendu, Pudong New Area, CN;
Joachim Hege, Kleinniedesheim, DE;
Detlef Kannengiesser, Zwingenberg, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
D21H 21/10 (2006.01); D21C 9/18 (2006.01); D21C 9/00 (2006.01); D21H 17/37 (2006.01); D21H 17/45 (2006.01); D21H 17/56 (2006.01);
U.S. Cl.
CPC ...
D21H 21/10 (2013.01); D21C 9/002 (2013.01); D21C 9/18 (2013.01); D21H 17/37 (2013.01); D21H 17/375 (2013.01); D21H 17/45 (2013.01); D21H 17/56 (2013.01);
Abstract
A pulp making process in which fibrous cellulosic material is pulped to form an aqueous suspension of cellulosic material, the suspension is drained through a screen to form a pulp sheet and that the pulp sheet is dried to form a dry market pulp, in which a water soluble cationic polymer is added to the suspension as the sole drainage aid wherein the water-soluble cationic polymer is either, The process of the invention provides improved drainage time and solids content of the dewatered pulp.