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:
Oct. 13, 2015
Filed:
May. 13, 2013
Korea Institute of Science and Technology, Seoul, KR;
Hyoung-Juhn Kim, Gyeonggi-do, KR;
Jun Young Han, Seoul, KR;
Jong Hyun Jang, Seoul, KR;
Eun Ae Cho, Seoul, KR;
Jonghee Han, Seoul, KR;
Suk Woo Nam, Seoul, KR;
Tae-Hoon Lim, Seoul, KR;
Sung Pil Yoon, Gyeonggi-do, KR;
Sung Jong Yoo, Seoul, KR;
Dirk Henkensmeier, Seoul, KR;
KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY, Seoul, KR;
Abstract
Provided are cardo copolybenzimidazoles, a gas separation membrane using the same and a method for preparing the same. More particularly, provided are cardo copolybenzimidazoles obtained by introducing cardo groups and aromatic ether groups to a polybenzimidazole backbone, a gas separation membrane having significantly improved oxygen permeability by using the same, and a method for preparing the same. The cardo copolybenzimidazoles have improved solubility as compared to the polybenzimidazole polymers according to the related art, show excellent mechanical properties while maintaining thermal stability so as to be formed into a film shape, and provide a gas separation membrane having significantly improved gas permeability, particularly, oxygen permeability.