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:
Jul. 08, 2008
Filed:
Nov. 15, 2002
Applicants:
Michael M. Azad, Charlotte, NC (US);
Norbert Herfert, Charlotte, NC (US);
Michael Mitchell, Waxhaw, NC (US);
Jim Robinson, Chesapeake, VA (US);
Inventors:
Michael M. Azad, Charlotte, NC (US);
Norbert Herfert, Charlotte, NC (US);
Michael Mitchell, Waxhaw, NC (US);
Jim Robinson, Chesapeake, VA (US);
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 27/14 (2006.01); B32B 5/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention concerns superabsorbent particles with a shell, wherein said shell comprises a cationic polymer crosslinked by the addition of crosslinker and adhered to hydrogel-forming polymer obtainable by applying a coating solution, containing both a cationic polymer and crosslinker, to hydrogel-forming polymer having a residual water content of less than 10 w %, their production and use.