Title:
VARNISH CONTAINING TRANSPARENT POLYIMIDE-BASED POLYMER AND SOLVENT
Document Type and Number:
WIPO Patent Application WO/2019/189483
Kind Code:
A1
Abstract:
This varnish comprises a transparent polyimide polymer and a solvent, wherein: the integrated value of a peroxide-derived peak detected by chemical light emission detection liquid chromatography is 700,000 or less; and when a film containing the transparent polyimide polymer and having a thickness of 50-80 μm is produced from the varnish, the total light transmittance of the film measured in accordance with Japanese Industrial Standards (JIS) K 7105:1981 is 80% or more.
Inventors:
SUGIYAMA HIROKO (JP)
IKEUCHI JUNICHI (JP)
NISHIMURA TOMOMI (JP)
MIYAMOTO KOJI (JP)
LIN CHIH CHENG (TW)
LEU CHYI MING (TW)
LEE TZONG MING (TW)
IKEUCHI JUNICHI (JP)
NISHIMURA TOMOMI (JP)
MIYAMOTO KOJI (JP)
LIN CHIH CHENG (TW)
LEU CHYI MING (TW)
LEE TZONG MING (TW)
Application Number:
PCT/JP2019/013392
Publication Date:
October 03, 2019
Filing Date:
March 27, 2019
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
IND TECH RES INST (TW)
IND TECH RES INST (TW)
International Classes:
C08L79/08; C08G73/10; G09F9/00
Domestic Patent References:
| WO2013047451A1 | 2013-04-04 | |||
| WO2011040440A1 | 2011-04-07 |
Foreign References:
| US20140238594A1 | 2014-08-28 | |||
| JP2015503652A | 2015-02-02 | |||
| JP2019001989A | 2019-01-10 | |||
| JP2008308579A | 2008-12-25 | |||
| JPH08176505A | 1996-07-09 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
Download PDF:
Previous Patent: HYDROGENATION CATALYST AND METHOD FOR MANUFACTURING LOW AROMATIC SOLVENT
Next Patent: MICROPHONE ARRAY AND ACOUSTIC ANALYSIS SYSTEM
Next Patent: MICROPHONE ARRAY AND ACOUSTIC ANALYSIS SYSTEM