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:
Mar. 29, 2016
Filed:
Jun. 03, 2015
Applicant:
Uop Llc, Des Plaines, IL (US);
Inventors:
Chunqing Liu, Arlington Heights, IL (US);
Zara Osman, Glenview, IL (US);
Assignee:
UOP LLC, Des Plaines, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 69/08 (2006.01); C08J 3/24 (2006.01); B01D 71/64 (2006.01); B01D 53/22 (2006.01); B01D 67/00 (2006.01); B01D 69/12 (2006.01); B01D 61/02 (2006.01); B01D 61/14 (2006.01);
U.S. Cl.
CPC ...
C08J 3/247 (2013.01); B01D 53/228 (2013.01); B01D 67/0006 (2013.01); B01D 67/0088 (2013.01); B01D 69/125 (2013.01); B01D 71/64 (2013.01); B01D 61/025 (2013.01); B01D 61/145 (2013.01); B01D 2323/08 (2013.01); B01D 2323/30 (2013.01); B01D 2325/20 (2013.01); C08J 2379/08 (2013.01);
Abstract
This invention relates to high hydrocarbon resistant chemically cross-linked aromatic polyimide polymers, membranes and methods for making and using these polymers and membranes. The high hydrocarbon resistant chemically cross-linked aromatic polyimide membrane described in the present invention comprises a plurality of repeating units of a first aromatic polyimide comprising hydroxyl groups cross-linked with a second aromatic polyimide comprising carboxylic acid groups via covalent ester bonds. These membranes exhibit high permeability and selectivity in separation of mixtures of gases and liquids.