Title:
POLYIMIDE FILM AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/226951
Kind Code:
A1
Abstract:
The present invention provides a polyimide film, comprising polyimide. In the process of forming the polyimide film, the polyimide is subjected to surface drying at 75°C to 155°C, and the polyimide comprises the structure as shown in formula (I): (I), wherein A is a residue of an aromatic diamine containing sulfonyl in the main chain, R1 is a residue of aromatic anhydride, R2 is a residue of aliphatic anhydride, m and n are each independently a positive integer, and a diamine monomer forming the polyimide is only formed by the aromatic diamine containing sulfonyl in the main chain. The polyimide film according to the present invention has transparency, and has UV absorption characteristics.
Inventors:
LAI BO HUNG (CN)
TANG WEI CHE (CN)
HUANG TANG CHIEH (CN)
TANG WEI CHE (CN)
HUANG TANG CHIEH (CN)
Application Number:
PCT/CN2020/090321
Publication Date:
November 18, 2021
Filing Date:
May 14, 2020
Export Citation:
Assignee:
MICROCOSM TECH CO LTD (CN)
International Classes:
C08G73/10; C08G73/12; C08J5/18
Foreign References:
| CN106029743A | 2016-10-12 | |||
| CN107428934A | 2017-12-01 | |||
| CN102382303A | 2012-03-21 | |||
| CN102532895A | 2012-07-04 | |||
| CN108586744A | 2018-09-28 | |||
| CN101679633A | 2010-03-24 | |||
| CN103102489A | 2013-05-15 | |||
| JP2015229691A | 2015-12-21 |
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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