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:
Nov. 19, 2013
Filed:
Oct. 07, 2010
Yong Seok Kim, Daejeon, KR;
Hyun Min Jung, Daejeon, KR;
Jong Chan Won, Daejeon, KR;
Jae Heung Lee, Daejeon, KR;
Yong Seok Kim, Daejeon, KR;
Hyun Min Jung, Daejeon, KR;
Jong Chan Won, Daejeon, KR;
Jae Heung Lee, Daejeon, KR;
Korea Reasearch Institute of Chemical Technology, Daejeon, KR;
Abstract
Disclosed is a method for preparing a poly(ethersulfonimide or ethersulfonamide) copolymer using cyclic oligomers, and more particularly, to a method for preparing a poly(ethersulfonimide or ethersulfonamide) copolymer by preparing a cyclic ether sulfone oligomer and a cyclic imide or amide oligomer and subjecting the cyclic ether sulfone oligomer and the cyclic imide or amide oligomer to ring-opening copolymerization in the presence of an alkali metal fluoride catalyst.