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. 25, 2019
Filed:
Nov. 03, 2016
Applicant:
Ip2ipo Innovations Limited, London, GB;
Inventors:
Andrew Guy Livingston, London, GB;
Yogesh Suresh Bhole, London, GB;
Assignee:
IP2IPO Innovations Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 61/02 (2006.01); B01D 71/62 (2006.01); B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 69/14 (2006.01); B01D 69/12 (2006.01);
U.S. Cl.
CPC ...
B01D 71/62 (2013.01); B01D 61/027 (2013.01); B01D 67/0011 (2013.01); B01D 67/0079 (2013.01); B01D 67/0097 (2013.01); B01D 69/02 (2013.01); B01D 69/125 (2013.01); B01D 69/141 (2013.01); B01D 2323/30 (2013.01); B01D 2325/022 (2013.01);
Abstract
Improved integrally skinned asymmetric membranes for organic solvent nanofiltration, and their methods of preparation and use are disclosed. Membranes are formed from polybenzimidazoles by phase inversion and are then crosslinked by addition of crosslinking agents. These stabilize the membranes and allow solvent nanofiltration to be maintained even in the solvents from which the membranes were formed by phase inversion, and in strongly acidic and strongly basic solvents.