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:
Aug. 11, 2009
Filed:
Oct. 02, 2007
Applicants:
Richard Mertens, Krefeld, DE;
Harren Jōrg, Krefeld, DE;
Inventors:
Richard Mertens, Krefeld, DE;
Harren Jōrg, Krefeld, DE;
Assignee:
Stockhausen GbmH, Krefeld, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 220/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to absorbent, cross-linked polymers based on partially neutralized, monoethylenically unsaturated monomers that bear acidic groups. Said polymers exhibit improved properties with regard to their ability to transport liquids in a swollen state. The surface of the polymers is postreticulated, using a combination of an organic cross-linking compound, excluding polyols, and a cation that is in salt form in an aqueous solution.