Title:
POLYAMIC ACID SOLUTION, METHOD FOR PREPARING SAME, POLYAMIDE FILM, LAMINATE, METHOD FOR PRODUCING SAID LAMINATE, AND FLEXIBLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/235601
Kind Code:
A1
Abstract:
This polyamic acid solution includes: a polyamic acid having a terminal structure represented by general formula (1); and a polyamic acid having a terminal structure represented by general formula (2). For example, a polyamic acid solution can be prepared by hydrolytically ring-opening a tetracarboxylic acid dianhydride to form a ring-opening body, and by reacting diamine with a mixture of the tetracarboxylic acid dianhydride and the ring-opening body. In general formulae (1) and (2), X is a tetravalent organic group which is a tetracarboxylic acid dianhydride residue, and Y is a divalent organic group which is a diamine residue.
Inventors:
TAKI RYUNOSUKE (JP)
AKINAGA TAKAHIRO (JP)
HORII ETSUO (JP)
AKINAGA TAKAHIRO (JP)
HORII ETSUO (JP)
Application Number:
PCT/JP2020/019978
Publication Date:
November 26, 2020
Filing Date:
May 20, 2020
Export Citation:
Assignee:
KANEKA CORP (JP)
International Classes:
B32B27/34; C08G73/10; C08L79/08
Domestic Patent References:
| WO2019131294A1 | 2019-07-04 | |||
| WO2014123045A1 | 2014-08-14 |
Foreign References:
| JPS4716979B1 | 1972-05-18 | |||
| JPS62280257A | 1987-12-05 | |||
| JP2009221398A | 2009-10-01 | |||
| JP2010001351A | 2010-01-07 | |||
| JP2013057051A | 2013-03-28 | |||
| JP2020019839A | 2020-02-06 |
Attorney, Agent or Firm:
SHINTAKU, Masato (JP)
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