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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.:

US 9822203 B1

PDFFull Text
Date of Patent:
Nov. 21, 2017

Filed:

Jan. 20, 2014

Method for producing water-absorbing polymer particles with high swelling rate and high centrifuge retention capacity with simultaneously high permeability of the swollen gel bed

Applicant:

Basf SE, Ludwigshafen, DE;

Inventors:

Monica Haag, Ludwigshafen, DE;

Roland Krauss, Neustadt, DE;

Thomas Gieger, Ludwigshafen, DE;

Volker Klock, Ludwigshafen, DE;

Matthias Weismantel, Jossgrund-Oberndorf, DE;

Assignee:

BASF SE, Ludwigshafen, DE;

Attorney:

Marshall, Gerstein & Borun LLP

Primary Examiner:

Jeffrey Mullis

Int. Cl.
CPC ...
C08F 2/10 (2006.01); C08F 222/10 (2006.01); C08F 6/00 (2006.01); C08F 8/00 (2006.01); C08J 3/24 (2006.01); A61L 15/60 (2006.01); C08F 220/06 (2006.01);
U.S. Cl.
CPC ...
C08F 222/1006 (2013.01); A61L 15/60 (2013.01); C08F 2/10 (2013.01); C08F 220/06 (2013.01); C08J 3/245 (2013.01); C08J 2333/02 (2013.01);
Abstract

A process for producing water-absorbing polymer particles having high free swell rate and high centrifuge retention capacity with simultaneously high permeability of the swollen gel bed by polymerization of an aqueous monomer solution in a polymerization reactor having at least two shafts (kneaders) which rotate in an axially parallel manner, subsequent extrusion at high temperatures and thermal surface postcrosslinking.

Find Patent Forward Citations

Haag, Monica. (2017). Method for producing water-absorbing polymer particles with high swelling rate and high centrifuge retention capacity with simultaneously high permeability of the swollen gel bed (U.S. Patent No. 9822203). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9822203

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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