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:
Jan. 10, 2023
Filed:
Jul. 17, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Cheolmin Yun, Daejeon, KR;
Kyungjun Kim, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
C08L 79/08 (2006.01); C08G 73/10 (2006.01); C08G 77/26 (2006.01); C08G 77/00 (2006.01); C08K 5/20 (2006.01); C08K 5/3415 (2006.01);
U.S. Cl.
CPC ...
C08L 79/08 (2013.01); C08G 73/106 (2013.01); C08G 73/1032 (2013.01); C08G 73/1039 (2013.01); C08G 73/1067 (2013.01); C08G 77/26 (2013.01); C08G 77/80 (2013.01); C08K 5/20 (2013.01); C08K 5/3415 (2013.01); C08L 2201/08 (2013.01); C08L 2201/10 (2013.01); C08L 2203/16 (2013.01); C08L 2203/20 (2013.01);
Abstract
A polyimide copolymer according to the present invention has a particular structure in which siloxane structures are distributed in a nanosize in a polymer and thus enables excellent transparency, heat resistance, mechanical strength and flexibility and effective reduction of residual stress, and thus can be used in various fields such as a substrate for a device, a cover substrate for a display, an optical film, an integrated circuit (IC) package, an adhesive film, a multi-layer flexible printed circuit (FPC), tape, a touch panel and a protective film for an optical disk.