Title:
POLYIMIDE VARNISH AND POLYIMIDE-COATED PRODUCT PREPARED THEREFROM
Document Type and Number:
WIPO Patent Application WO/2024/063534
Kind Code:
A1
Abstract:
The present invention provides a polyimide varnish comprising: a first polyamic acid comprising a first block derived by polymerization of a first dianhydride acid component comprising biphenyltetracarboxylic dianhydride (BPDA) and a first diamine component comprising para-phenylene (PPD) and m-tolidine; and a second polyamic acid comprising a second block derived by polymerization of a second dianhydride acid component comprising biphenyltetracarboxylic dianhydride (BPDA) and pyromellitic dianhydride (PMDA) and a second diamine component comprising at least one selected from para-phenylene (PPD) and m-tolidine.
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Inventors:
CHO MIN SANG (KR)
LEE KIL NAM (KR)
RYU HAN TAE (KR)
BACK SUNG YUL (KR)
CHAE SU KYUNG (KR)
JUNG YOUNG JIN (KR)
LEE KIL NAM (KR)
RYU HAN TAE (KR)
BACK SUNG YUL (KR)
CHAE SU KYUNG (KR)
JUNG YOUNG JIN (KR)
Application Number:
PCT/KR2023/014269
Publication Date:
March 28, 2024
Filing Date:
September 20, 2023
Export Citation:
Assignee:
PI ADVANCED MAT CO LTD (KR)
International Classes:
C09D179/08; C08G73/10; H05K1/09
Domestic Patent References:
| WO2021091011A1 | 2021-05-14 |
Foreign References:
| KR20220040278A | 2022-03-30 | |||
| KR20190091393A | 2019-08-06 | |||
| US20120308816A1 | 2012-12-06 | |||
| US20210261734A1 | 2021-08-26 |
Attorney, Agent or Firm:
KIM, Kyeongkyo et al. (KR)
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