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:
Apr. 22, 2014
Filed:
Mar. 04, 2011
Applicants:
Norbert Herfert, Altenstadt, DE;
Thomas Daniel, Waldsee, DE;
Bootsara Parchana, Chonburi, TH;
Inventors:
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 8/40 (2006.01); C08F 4/40 (2006.01); C08F 20/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for producing water-absorbing polymer particles, wherein at least one inorganic phosphoric acid and/or salt thereof and at least one organic 2-hydroxy acid and/or salt thereof is added, where the phosphorus in the inorganic phosphoric acid has an oxidation number of less than +V and the organic 2-hydroxy acid does not have any ethylenically unsaturated groups, and also the water-absorbing polymer particles obtainable by the process according to the invention.