Title:
LOW-DIELECTRIC BLACK POLYIMIDE FILM AND PREPARATION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/075331
Kind Code:
A1
Abstract:
The present invention relates to a polyimide film having transmittance of 1.0% or lower, glossiness of 50% or lower, and a dielectric loss rate of 0.01 or lower, and a preparation method thereof. The polyimide film having adjusted the type and composition ratio of dianhydride component, diamine component and carbon black has the advantage of exhibiting excellent optical properties, dielectric properties and chemical resistance.
Inventors:
YEO MOON-JIN (KR)
LEE KIL-NAM (KR)
LEE KIL-NAM (KR)
Application Number:
PCT/KR2022/016273
Publication Date:
May 04, 2023
Filing Date:
October 24, 2022
Export Citation:
Assignee:
PI ADVANCED MAT CO LTD (KR)
International Classes:
C08J5/18; C08G73/10; C08K3/04; C08L79/08
Foreign References:
| JP2019067929A | 2019-04-25 | |||
| KR20200008862A | 2020-01-29 | |||
| KR20210055265A | 2021-05-17 | |||
| KR20150001953A | 2015-01-07 | |||
| JP2015081345A | 2015-04-27 |
Attorney, Agent or Firm:
HANYANG PATENT FIRM (KR)
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