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:
Sep. 14, 1999
Filed:
Dec. 30, 1997
Applicant:
Inventors:
Myung-Hun Lee, Taejeon, KR;
Seo-Bong Lee, Taejeon, KR;
Chang-Jin Lee, Taejeon, KR;
Eun-Kyoung Kim, Taejeon, KR;
Mi-Seon Ryoo, Taejeon, KR;
Assignee:
Korea Research Institute of Chemical Technology, Taejeon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528170 ; 528125 ; 528126 ; 528128 ; 528171 ; 528172 ; 528173 ; 528174 ; 528179 ; 528183 ; 528185 ; 528220 ; 528229 ; 528350 ; 528351 ; 528353 ; 525432 ;
Abstract
This invention relates to a poly (imide amic ester) random copolymer, a precursor thereof, and a process for preparing the same. Specifically this invention relates to a novel precursor of polyimide, poly(imide amic ester) which is chemically stable and has excellent workability in either liquid or solid state, a polyimide obtained therefrom and a process for preparing the same.