Title:
POLYAMIDE-IMIDE FILM AND PREPARATION METHOD THEREFOR, AND FLEXIBLE DISPLAY
Document Type and Number:
WIPO Patent Application WO/2023/221605
Kind Code:
A1
Abstract:
Provided in the present application are a polyamide-imide film and a flexible display. The polyamide-imide film is obtained by copolymerizing an aromatic dianhydride and an aromatic dicarbonyl compound with an aromatic diamine, wherein the aromatic dicarbonyl compound comprises a fluorinated aromatic dicarbonyl compound and a non-fluorinated aromatic dicarbonyl compound. The polyamide-imide film of the present application can achieve an extremely low yellowness index and an extremely low birefringence, and is suitable for the production of a substrate of a flexible display.
Inventors:
ZHANG QUN (CN)
ZHU CHUNCAI (CN)
HU TAO (CN)
LIU GUOLONG (CN)
XU ZHE (CN)
ZHU CHUNCAI (CN)
HU TAO (CN)
LIU GUOLONG (CN)
XU ZHE (CN)
Application Number:
PCT/CN2023/080130
Publication Date:
November 23, 2023
Filing Date:
March 07, 2023
Export Citation:
Assignee:
ZHEJIANG OCAS NEW MAT CO LTD (CN)
International Classes:
C08L79/08; B32B27/34; C08G73/10; C08G73/14; C08J5/18
Foreign References:
| CN113439101A | 2021-09-24 | |||
| CN113583443A | 2021-11-02 | |||
| CN114907565A | 2022-08-16 | |||
| CN114940822A | 2022-08-26 | |||
| JP2010180292A | 2010-08-19 | |||
| JPH0741559A | 1995-02-10 | |||
| US20100123336A1 | 2010-05-20 |
Attorney, Agent or Firm:
JV IP LAW OFFICE (CN)
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