Polyimidvorläuferlösung, Verfahren zur Herstellung eines Porösen Polyimidfilms und Poröser Polyimidfilm

Details

Veröffentlichungs-Nr.

EP4047036

Aktenzeichen

EP21190965

Anmeldetag

12. August 2021

Veröffentlichung

28. Dezember 2022

Erteilung

28. Dezember 2022

Rechtsraum

EP

IPC

C08G73/10C08L79/08

Abstract

A polyimide precursor solution contains: an aqueous solvent containing water; particles; and a polyimide precursor, wherein the polyimide precursor has a high molecular weight region A containing a high molecular weight side maximum value and a low molecular weight region B containing a low molecular weight side maximum value in an elution curve obtained by gel permeation chromatography, a weight average molecular weight in the high molecular weight region A is 50,000 or more, a weight average molecular weight in the low molecular weight region B is 10,000 or more and 30,000 or less, and a value of a/(a+b) is 0.60 or more and 0.98 or less in which a represents an area of the high molecular weight region A and b represents an area of the low molecular weight region B.

Anmelder

Firma

Fujifilm Business Innovation Corp.

Land

🇯🇵 Japan

Fachgebiete