Title:
POLYIMIDE PRECURSOR COMPOSITION AND POLYIMIDE FILM COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/090969
Kind Code:
A1
Abstract:
The present invention provides a polyimide film comprising a block copolymer, the block copolymer comprising: a first block obtained by imidizing polyamic acid derived from a polymer consisting of a dianhydrous acid component including biphenyltetracarboxylic dianhydride and a diamine component including paraphenylenediamine; a second block obtained by imidizing polyamic acid derived from a polymer consisting of a dianhydrous acid component including biphenyltetracarboxylic dianhydride and a diamine component including m-tolidine; and a third block obtained by imidizing polyamic acid derived from a polymer consisting of a dianhydrous acid component including pyromellitic dianhydride (PMDA) and a diamine component including m-tolidine.
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Inventors:
BACK SUNG-YUL (KR)
WON DONG-YOUNG (KR)
LEE KIL-NAM (KR)
CHO MIN-SANG (KR)
CHAE SU-KYUNG (KR)
JUNG YOUNG-JIN (KR)
WON DONG-YOUNG (KR)
LEE KIL-NAM (KR)
CHO MIN-SANG (KR)
CHAE SU-KYUNG (KR)
JUNG YOUNG-JIN (KR)
Application Number:
PCT/KR2022/018423
Publication Date:
May 25, 2023
Filing Date:
November 21, 2022
Export Citation:
Assignee:
PI ADVANCED MAT CO LTD (KR)
International Classes:
C08J5/18; B32B7/025; B32B15/08; B32B27/28; C08G73/10
Foreign References:
| KR20210055265A | 2021-05-17 | |||
| JP2017177604A | 2017-10-05 | |||
| KR20210055267A | 2021-05-17 | |||
| KR20200125720A | 2020-11-04 | |||
| KR20200120577A | 2020-10-21 |
Attorney, Agent or Firm:
HANYANG PATENT FIRM (KR)
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