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. 02, 2021
Filed:
Sep. 07, 2016
Basf SE, Ludwigshafen am Rhein, DE;
Oliver Gronwald, Heusenstamm, DE;
Martin Weber, Maikammer, DE;
Frank Rittig, Osthofen, DE;
Martin Heijnen, Landsberg am Lech, DE;
Henning Urch, Ludwigshafen, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
Process for making membranes M comprising the following steps: a) providing a dope solution D comprising at least one polymer P and at least one solvent S, b) adding at least one coagulant C to said dope solution D to coagulate said at least one polymer P from said dope solution D to obtain a membrane M, wherein said at least one solvent S comprises more than 50% by weight of at least one compound according to formula (I) (I), wherein Rand Rare independently Cto Calkyl, Ris selected from H or an aliphatic rest, 20 Ris selected from H or an aliphatic rest, AO represents at least one alkylene oxide, n is a number from 0 to 100.