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. 30, 2010
Filed:
Jan. 22, 2009
Applicants:
Friedrich Engelhardt, Frankfurt, DE;
Christian Bremer, Bad Soden Salmünster, DE;
Anja Obermüller, Bruchköbel, DE;
Joachim Christian, Rödermark, DE;
Inventors:
Friedrich Engelhardt, Frankfurt, DE;
Christian Bremer, Bad Soden Salmünster, DE;
Anja Obermüller, Bruchköbel, DE;
Joachim Christian, Rödermark, DE;
Assignee:
Allessa Chemie GmbH, , DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08K 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The aqueous polymer composition comprises a water soluble polymer having a molar weight of at least 10Daltons and comprising functional groups which may form complexes with metal ions. The aqueous polymer compositions of this invention are stabilized against thermal or other degradation processes by addition of a phenothiazine compound to allow their use even under harsh conditions.