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:
Apr. 09, 2024
Filed:
Dec. 17, 2019
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Kichul Koo, Daejeon, KR;
Kyunghwan Kim, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
C08J 5/18 (2006.01); C07D 209/48 (2006.01); C07D 401/14 (2006.01); C07D 403/14 (2006.01); C08G 73/10 (2006.01);
U.S. Cl.
CPC ...
C07D 209/48 (2013.01); C07D 401/14 (2013.01); C07D 403/14 (2013.01); C08G 73/1003 (2013.01); C08J 5/18 (2013.01); C08J 2379/08 (2013.01);
Abstract
Disclosed is a novel diamine having a structure of comprising an intramolecular imide group, and further comprising aromatic cyclic groups linked by an ester group to both sides of the imide group. When the novel diamine is used as a polymerizable component for preparing a polyimide, a polyimide film having remarkably improved mechanical and thermal properties while maintaining optical properties can be provided.