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:
Feb. 23, 2021
Filed:
Apr. 20, 2017
Basf SE, Ludwigshafen am Rhein, DE;
Sandra Jeck, Ludwigshafen, DE;
Oliver Soetje, De Meern, NL;
Tobias Bringmann, Ludwigshafen, DE;
Gabriela Eugenia Fonseca Zepeda, Ludwigshafen, DE;
Dirk Meckelnburg, Ludwigshafen, DE;
Dennis Loesch, Ludwigshafen, DE;
Bjoern Langlotz, Ludwigshafen, DE;
John Barratt, Bradford, GB;
Faissal-Ali El-Toufaili, Ludwigshafen, DE;
Hazel Sprafke, Lampertheim, DE;
Bernd Schube, Ludwigshafen, DE;
Markus Ostermayr, Ludwigshafen, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
A process for producing an aqueous polymer solution, including: (a) providing a hydrated polymer that has been prepared by aqueous solution polymerisation of ethylenically unsaturated monomers, which hydrated polymer contains at least 10% by weight active polymer; (b) cutting the hydrated polymer by subjecting the hydrated polymer to at least one cutting stage containing at least one stream of aqueous liquid at a pressure of at least 150 bar to reduce the size of the hydrated polymer; and (c) dissolving the hydrated polymer in an aqueous liquid so as to obtain an aqueous polymer solution. An apparatus for producing an aqueous polymer solution.