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:
Jan. 12, 2021
Filed:
Mar. 14, 2017
Applicant:
Basf SE, Ludwigshafen am Rhein, DE;
Inventors:
Simon Gramlich, Ludwigshafen am Rhein, DE;
Achim Stammer, Ludwigshafen am Rhein, DE;
Angela Ulzhoefer, Ludwigshafen am Rhein, DE;
Frank Niedermaier, Ladenburg, DE;
Michel Gassmann, Ludwigshafen am Rhein, DE;
Assignee:
BASF SE, Ludwigshafen am Rhein, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 65/46 (2006.01); C08G 75/23 (2006.01); C08G 75/02 (2016.01); C08G 65/40 (2006.01); C08G 75/20 (2016.01); C08G 75/00 (2006.01); C08J 5/18 (2006.01); C08J 3/14 (2006.01);
U.S. Cl.
CPC ...
C08G 75/23 (2013.01); C08G 65/40 (2013.01); C08G 65/46 (2013.01); C08G 75/00 (2013.01); C08G 75/02 (2013.01); C08G 75/20 (2013.01); C08J 3/14 (2013.01); C08J 5/18 (2013.01); C08J 2381/06 (2013.01);
Abstract
The present invention relates to a process for preparing a polyaryl ether by reacting components (a1) and (a2) in the presence of a carbonate compound (C) to obtain a salt-containing polymer (SP) comprising the polyaryl ether and a salt (S). After the reaction, the salt (S) is extracted from the salt-containing polymer (SP) to obtain a desalinated polymer (DP) comprising the polyaryl ether.