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Patent Searching and Data


Title:
MULTILAYER POLYIMIDE FILM HAVING EXCELLENT DIMENSIONAL STABILITY AND ADHESIVENESS, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2020/209555
Kind Code:
A1
Abstract:
The present invention provides a multilayer polyimide film and a method for producing same, the multilayer polyimide film comprising: a core portion containing at least a 4,4'-diamino-2,2'-dimethylbiphenyl compound-derived structure; and a skin portion containing at least a 3,5-diaminobenzoic acid compound-derived structure, wherein the glass transition temperature (Tg) of the core portion is 360°C or higher, the glass transition temperature of the skin portion is 300°C or higher, and the adhesiveness is at least 1,000 gf/cm.

Inventors:
LEE KIL-NAM (KR)
BACK SUNG-YUL (KR)
KIM KI-HOON (KR)
CHOI JEONG-YEUL (KR)
Application Number:
PCT/KR2020/004621
Publication Date:
October 15, 2020
Filing Date:
April 06, 2020
Export Citation:
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Assignee:
PI ADVANCED MAT CO LTD (KR)
International Classes:
B32B27/28; B32B15/08; B32B27/08; B32B27/18; B32B27/20; B32B37/15; C08G73/10; C08L79/08
Foreign References:
JP2015212090A2015-11-26
KR20160002386A2016-01-07
KR20140025573A2014-03-04
JP2006056186A2006-03-02
KR101842447B12018-05-14
Attorney, Agent or Firm:
HANYANG PATENT FIRM (KR)
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