Title:
METHOD FOR PREPARING POLYAMIC ACID, AND POLYAMIC ACID, POLYIMIDE RESIN, AND POLYIMIDE FILM WHICH ARE MANUFACTURED THEREBY
Document Type and Number:
WIPO Patent Application WO/2019/132515
Kind Code:
A1
Abstract:
The present invention relates to a method for preparing polyamic acid, and polyamic acid, a polyimide resin, and a polyimide film which are manufactured thereby and, more specifically, to the development of a polyimide composition having an improved linear thermal expansion coefficient of a polyimide film manufactured therefrom by a change to a split injection method when injecting one type of diamine.
Inventors:
CHOI DOO LI (KR)
Application Number:
PCT/KR2018/016671
Publication Date:
July 04, 2019
Filing Date:
December 26, 2018
Export Citation:
Assignee:
KOLON INC (KR)
International Classes:
C08G73/10; C08J5/18; C08L79/08; G02F1/1333; H01L51/50
Domestic Patent References:
| WO2015122032A1 | 2015-08-20 |
Foreign References:
| KR20170088981A | 2017-08-02 | |||
| KR20160098984A | 2016-08-19 | |||
| JP2000290372A | 2000-10-17 | |||
| KR20160037489A | 2016-04-06 |
Attorney, Agent or Firm:
ASTRAN INT'L IP GROUP et al. (KR)
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