Title:
POLYIMIDE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/159616
Kind Code:
A1
Abstract:
A polyimide and a preparation method therefor. The preparation method for the polyimide comprises: mixing a diamine compound containing an amide bond with a material containing an ether dianhydride in the molecular structure and an organic solvent, and then performing cross-linking and curing so as to form the polyimide. By introducing regularly arranged molecular chains, highly oriented in-plane crystallization, a simple rigid planar structure and intramolecular hydrogen bonds, a polyimide material having high barrier properties, excellent heat resistance and a low thermal expansion coefficient is prepared.
Inventors:
WANG YAMIN (CN)
Application Number:
PCT/CN2020/087735
Publication Date:
August 19, 2021
Filing Date:
April 29, 2020
Export Citation:
Assignee:
WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECH CO LTD (CN)
International Classes:
C08G73/10; C09D179/08
Foreign References:
| CN101709515A | 2010-05-19 | |||
| CN101709515A | 2010-05-19 | |||
| CN110698682A | 2020-01-17 | |||
| CN103255491A | 2013-08-21 | |||
| JP3989650B2 | 2007-10-10 |
Attorney, Agent or Firm:
PURPLEVINE INTELLECTUAL PROPERTY (SHENZHEN) CO., LTD. (CN)
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