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:
Jun. 16, 2015
Filed:
Nov. 02, 2010
Matthias Kleiner, Mannheim, DE;
Wolfgang Loth, Bad Durkheim, DE;
Markus Brym, Mannheim, DE;
Elke Gütlich-hauk, Lambsheim, DE;
Bolette Urtel, Bobenheim-Roxheim, DE;
Ruth Wirschem, Mannheim, DE;
Jürgen Detering, Limburgerhof, DE;
Matthias Kleiner, Mannheim, DE;
Wolfgang Loth, Bad Durkheim, DE;
Markus Brym, Mannheim, DE;
Elke Gütlich-Hauk, Lambsheim, DE;
Bolette Urtel, Bobenheim-Roxheim, DE;
Ruth Wirschem, Mannheim, DE;
Jürgen Detering, Limburgerhof, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A process for preparing aqueous solutions of homo- or copolymers of acrylic acid by means of free-radical polymerization of acrylic acid and optionally water-soluble, monoethylenically unsaturated comonomers in an aqueous medium in the presence of at least one water-soluble initiator and of at least one water-soluble regulator, wherein the polymerization is conducted by means of a continuous process, and wherein, after the polymerization, low molecular weight components are at least partly removed from the resulting aqueous polymer solution. For the polymerization, preference is given to using microstructured mixers and reactors. Preference is given to using at least one reactor and/or mixer with microstructures for the process.