Title:
POLYAMIC ACID COMPOSITION AND PREPARATION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/141708
Kind Code:
A1
Abstract:
The present invention provides a polyamic acid composition comprising a diamine monomer and a dianhydride monomer in the molar ratio of 1:0.98 to 1:0.99, and satisfying Equation 1 below: [Equation 1] |[(V1 - V2)/V1] × 100| ≤ 15 (%), wherein V1 represents a viscosity immediately after forming the polyamic acid composition on a support, and V2represents a viscosity after 1 hour at 25℃ after forming the polyamic acid composition on the support.
Inventors:
KIM JOO YOUNG (KR)
LEE IK SANG (KR)
LEE IK SANG (KR)
Application Number:
PCT/KR2019/014504
Publication Date:
July 09, 2020
Filing Date:
October 30, 2019
Export Citation:
Assignee:
PI ADVANCED MAT CO LTD (KR)
International Classes:
C08G73/10; C08J5/18; G02F1/1333; H05K1/03
Foreign References:
| KR101907320B1 | 2018-10-11 | |||
| KR20060037963A | 2006-05-03 | |||
| KR20130075423A | 2013-07-05 | |||
| KR20160141768A | 2016-12-09 | |||
| KR101949316B1 | 2019-02-18 | |||
| KR102013535B1 | 2019-08-22 |
Attorney, Agent or Firm:
DANA PATENT LAW FIRM (KR)
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