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:
Mar. 24, 2009
Filed:
Aug. 17, 2004
Applicants:
Waldemar Inger, Krefeld, DE;
Rudiger Hose, Tonisvorst, DE;
Heinz-peter Bohlmann, Krefeld, DE;
Inventors:
Assignee:
Evonik Stockhausen GmbH, Krefeld, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 5/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a pulverulent polymer post-crosslinked on the surface and absorbing water or aqueous liquids, synthesised from polymerised, optionally pre-crosslinked monomers containing partially neutralised carboxyl groups. The present invention also relates to a process for the post-treatment of the aforementioned polymers and the use of a solution of at least one salt of an at least trivalent cation for restoring the gel permeability of the aforementioned polymers that have been damaged by mechanical action.