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:
Nov. 20, 2012
Filed:
Jan. 29, 2008
Ulrich Riegel, Landstuhl, DE;
Thomas Daniel, Waldsee, DE;
Uwe Stueven, Bad Soden, DE;
Mark Elliott, Ludwigshafen, DE;
Volker Braig, Weinheim-Lützelsachsen, DE;
Michael DE Marco, Palo Alto, CA (US);
Ulrich Riegel, Landstuhl, DE;
Thomas Daniel, Waldsee, DE;
Uwe Stueven, Bad Soden, DE;
Mark Elliott, Ludwigshafen, DE;
Volker Braig, Weinheim-Lützelsachsen, DE;
Michael de Marco, Palo Alto, CA (US);
BASF SE, Ludwigshafen, DE;
Abstract
Water-absorbing polymeric particles are produced by polymerizing a monomer solution or suspension comprising at least one unsaturated carboxylic acid and at least one hydroquinone monoether, and coating the polymeric particles with at least one salt of a tervalent metal cation of a carboxylic acid and/or at least one basic salt of a tervalent metal cation.