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:
Sep. 29, 2015
Filed:
Jun. 19, 2014
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Rüdiger Funk, Niedernhausen, DE;
Thomas Pfeiffer, Boehl-Iggelheim, DE;
Jürgen Schröder, Ludwigshafen, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 19/00 (2006.01); C08F 20/06 (2006.01); B01J 19/28 (2006.01); C08F 220/28 (2006.01);
U.S. Cl.
CPC ...
B01J 19/28 (2013.01); C08F 220/28 (2013.01);
Abstract
A process for continuously producing water-absorbing polymer particles by polymerizing a monomer solution comprising acrylic acid and/or salts thereof, wherein the acrylic acid supplied has a dimeric acrylic acid content of at least 0.02% by weight and the dimeric acrylic acid content is kept essentially constant.