Title:
DIAMINE COMPOUND, POLYIMIDE PRECURSOR USING SAME, AND POLYIMIDE FILM
Document Type and Number:
WIPO Patent Application WO/2020/130552
Kind Code:
A1
Abstract:
Disclosed is a novel diamine having a structure of comprising an intramolecular imide group, and further comprising aromatic cyclic groups linked by an ester group to both sides of the imide group. When the novel diamine is used as a polymerizable component for preparing a polyimide, a polyimide film having remarkably improved mechanical and thermal properties while maintaining optical properties can be provided.
Inventors:
KOO KICHUL (KR)
KIM KYUNGHWAN (KR)
KIM KYUNGHWAN (KR)
Application Number:
PCT/KR2019/017841
Publication Date:
June 25, 2020
Filing Date:
December 17, 2019
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C07D209/48; C07D401/14; C07D403/14; C08G73/10; C08J5/18
Foreign References:
| US4668757A | 1987-05-26 | |||
| CN102432878A | 2012-05-02 | |||
| US5235005A | 1993-08-10 | |||
| JPH08283436A | 1996-10-29 | |||
| KR20160023531A | 2016-03-03 |
Other References:
HAN, S. S. ET AL.: "Synthesis and characterization of new polyimides containing ethynylene linkages", EUROPEAN POLYMER JOURNAL, vol. 43, no. 4, 2007, pages 1541 - 1548, XP022008193, DOI: 10.1016/j.eurpolymj.2007.01.052
Attorney, Agent or Firm:
KIM, Aera (KR)
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