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:
May. 12, 2020
Filed:
Oct. 27, 2017
Uop Llc, Des Plaines, IL (US);
Chunqing Liu, Arlington Heights, IL (US);
Sudipto Chakraborty, Gurgaon, IN;
Nicole Karns, Chicago, IL (US);
Other;
Abstract
The present invention discloses high selectivity copolyimide membranes for gas, vapor, and liquid separations. Gas permeation tests on these copolyimide membranes demonstrated that they not only showed high selectivity for CO/CHseparation, but also showed extremely high selectivities for H/CHand He/CHseparations. These copolyimide membranes can be used for a wide range of gas, vapor, and liquid separations such as separations of CO/CH, He/CH, CO/N, olefin/paraffin separations (e.g. propylene/propane separation), H/CH, He/CH, O/N, iso/normal paraffins, polar molecules such as HO, HS, and NHmixtures with CH, N, H. The high selectivity copolyimide membranes have UV cross-linkable sulfonyl functional groups and can be used for the preparation of UV cross-linked high selectivity copolyimide membranes with enhanced selectivities. The invention also includes blend polymer membranes comprising the high selectivity copolyimide and polyethersulfone. The blend polymer membranes comprising the high selectivity copolyimide and polyethersulfone can be further UV cross-linked under UV radiation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile