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. 30, 2013
Filed:
Jul. 01, 2011
Matthias Laubender, Schifferstadt, DE;
Ewald Heintz, Schweigen-Rechtenbach, DE;
Clarissa Seidl, Neuhofen, DE;
Bolette Urtel, Bobenheim-Roxheim, DE;
Alexsandro Berger, Rosenheim, DE;
Matthias Laubender, Schifferstadt, DE;
Ewald Heintz, Schweigen-Rechtenbach, DE;
Clarissa Seidl, Neuhofen, DE;
Bolette Urtel, Bobenheim-Roxheim, DE;
Alexsandro Berger, Rosenheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The invention relates to a process for preparing a polymer by free-radical polymerization of at least one ethylenically unsaturated monocarboxylic acid and/or a salt thereof, at least one ethylenically unsaturated dicarboxylic acid and/or an anhydride and/or a salt thereof, in the presence of hypophosphorous acid and/or a salt thereof. The invention also relates to a polymer composition obtainable by this process. The invention also relates to the use of such a polymer composition as detergent additive, e.g. as dispersant, scale inhibitor or sequestrant for laundry detergents.