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:
Dec. 26, 2017
Filed:
Apr. 30, 2015
Myongji University Industry and Academia Cooperation Foundation, Yongin-si, Gyeonggi-do, KR;
Wook-Jin Chung, Seongnam-si, KR;
Lawrence A. Limjuco, Yongin-si, KR;
Grace M. Nisola, Yongin-si, KR;
Rey Eliseo C. Torrejos, Yongin-si, KR;
Eleazer L. Vivas, Yongin-si, KR;
Hern Kim, Seongnam-si, KR;
Myoung Jun Park, Yongin-si, KR;
Jeong Gil Seo, Yongin-si, KR;
Seong-Poong Lee, Anyang-si, KR;
MYONGJI UNIVERSITY INDUSTRY AND ACADEMIA COOPERTAION FOUNDATION, Yongin-si, KR;
Abstract
Disclosed herein are a novel crown ether with bulky and rigid groups and a method for preparing the same. Also provided are a lithium adsorbent comprising the novel crown ether immobilized onto a nanofiber, and a method for preparing the same. The lithium-selective crown ether is synthesized through intermolecular cyclization between a bulky epoxide and a rigid aromatic compound such as 1,2-dihydroxybenzene, and can effectively recover lithium ions. For use as a lithium adsorbent, the novel crown ether with both bulky and rigid subunits is immobilized onto a polymer nanofiber. The crown ether-immobilized polymer nanofibers may be formed into a recyclable membrane.