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:
Feb. 19, 2013
Filed:
Jul. 09, 2003
Applicants:
Sandra Hintz, Moers, DE;
Helmut Bruggemann, Moers, DE;
Inventors:
Sandra Hintz, Moers, DE;
Helmut Bruggemann, Moers, DE;
Assignee:
Evonik Stockhausen GmbH, Krefeld, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/00 (2006.01); C08J 9/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for the preparation of water-absorbent, foam-type polymer structures, wherein an aqueous composition is foamed, and the foamed aqueous composition is then heated at a temperature in a range of from 50 to 300° C., so that the polymer crosslinks at least partially and the content of water is adjusted to not more than 15 wt. %, based on the total weight of the foam-type polymer structure that forms.