Title:
MODIFIED POLYAMIDE ACID AND PREPARATION METHOD THEREFOR, AND PREPARATION METHOD FOR COMPOSITE FILM LAYER
Document Type and Number:
WIPO Patent Application WO/2020/238029
Kind Code:
A1
Abstract:
The present invention provides a modified polyamide acid and a preparation method therefor, and a preparation method for a composite film layer. The modified polyamide acid comprises polyamide acid and polyvinylidene fluoride. By introducing the polyvinylidene fluoride having good thermal stability, high dielectric constant, and excellent piezoelectric and ferroelectric properties into the modified polyamide acid, the dielectric constant of the polyamide acid is improved, and the structure adjustability thereof is enhanced.
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Inventors:
WANG YAMIN (CN)
Application Number:
PCT/CN2019/116127
Publication Date:
December 03, 2020
Filing Date:
November 07, 2019
Export Citation:
Assignee:
WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECH CO LTD (CN)
International Classes:
C08L79/08; C08G73/10; C08J5/18; C08L27/16; G02F1/1337
Domestic Patent References:
| WO2019099329A1 | 2019-05-23 |
Foreign References:
| CN110093034A | 2019-08-06 | |||
| JPS62150325A | 1987-07-04 | |||
| JP2004161821A | 2004-06-10 | |||
| CN101192665A | 2008-06-04 | |||
| CN103958188A | 2014-07-30 | |||
| CN104830058A | 2015-08-12 | |||
| CN103755918A | 2014-04-30 | |||
| CN108586741A | 2018-09-28 |
Other References:
YAN, QIAN: "Preparation and Properties of Polyimide/Polyvinylidene Fluoride Functional Membrane", CHINESE MASTER’S THESES FULL-TEXT DATABASE, ENGINEERING SCIENCE AND TECHNOLOGY I, no. 07, 15 July 2018 (2018-07-15), ISSN: 1674-0246
Attorney, Agent or Firm:
PURPLEVINE INTELLECTUAL PROPERTY (SHENZHEN) CO., LTD. (CN)
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