US 12,129,337 B2
Polyimide precursor composition and polyimide film manufactured using same
Jinyoung Park, Daejeon (KR); Chan Hyo Park, Daejeon (KR); and Danbi Choi, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 17/297,854
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Feb. 10, 2020, PCT No. PCT/KR2020/001842
§ 371(c)(1), (2) Date May 27, 2021,
PCT Pub. No. WO2020/166913, PCT Pub. Date Aug. 20, 2020.
Claims priority of application No. 10-2019-0017004 (KR), filed on Feb. 14, 2019; and application No. 10-2020-0006836 (KR), filed on Jan. 17, 2020.
Prior Publication US 2022/0010069 A1, Jan. 13, 2022
Int. Cl. C08J 5/18 (2006.01); C08G 73/10 (2006.01); C08L 79/08 (2006.01)
CPC C08G 73/101 (2013.01) [C08G 73/1067 (2013.01); C08J 5/18 (2013.01); C08L 79/08 (2013.01); C08L 2201/08 (2013.01); C08L 2203/16 (2013.01); C08L 2203/20 (2013.01)] 17 Claims
 
1. A polyimide precursor composition comprising:
a first polyamic acid having a repeating structure of the following formula 1 and having a reactive end capper having a reactive functional group; and
a second polyamic acid having a repeating structure of the following formula 2:

OG Complex Work Unit Chemistry
wherein the first polyamic acid and the second polyamic acid are contained in a molar ratio of 20:80 to 80:20.