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. 02, 2010
Filed:
Jul. 28, 2005
Applicants:
Kai Michael Exner, Eppelheim, DE;
Thomas Daniel, Waldsee, DE;
Mark Elliott, Ludwigshafen, DE;
Ulrich Riegel, Landstuhl, DE;
Inventors:
Kai Michael Exner, Eppelheim, DE;
Thomas Daniel, Waldsee, DE;
Mark Elliott, Ludwigshafen, DE;
Ulrich Riegel, Landstuhl, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 8/30 (2006.01); C08B 37/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a process for postcrosslinking a water absorbing polymer by the polymer being treated with at least one postcrosslinker and postcrosslinked and dried during or after the treatment by raising the temperature, the at least one postcrosslinker being a cyclic carbamate or a cyclic urea, wherein the cyclic carbamate or the cyclic urea was obtained by reacting respectively an aminoalcohol or a diamine with a cyclic carbonate.