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. 10, 2024
Filed:
Dec. 11, 2019
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Kichul Koo, Daejeon, KR;
Kyunghwan Kim, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 73/10 (2006.01); C07D 209/48 (2006.01); C07D 401/14 (2006.01); C07D 403/10 (2006.01); C07D 403/14 (2006.01); C08J 5/18 (2006.01); C08L 79/08 (2006.01); C09D 179/08 (2006.01);
U.S. Cl.
CPC ...
C08G 73/1032 (2013.01); C07D 403/10 (2013.01); C07D 403/14 (2013.01); C08J 5/18 (2013.01); C08J 2379/08 (2013.01);
Abstract
The present invention discloses a novel diamine that has a structure bearing an intramolecular imide group and additionally an amide-substituted aromatic ring group at opposite sides of the imide group. The use of the novel diamine as a polymerization ingredient in polyimide production can provide a polyimide film which has remarkably improved mechanical and thermal properties while maintaining optical properties.