多孔質ポリイミドフィルム原反、その製造方法、及び組成物

Title:

多孔質ポリイミドフィルム原反、その製造方法、及び組成物

Document Type and Number:

Japanese Patent JP7397570

Kind Code:

B2

Abstract:

A problem to be solved by this invention is to provide a porous polyimide film original fabric excellent in tensile strength and bending strength, a method for producing the same, and a composition suitable for being used for producing the same. The solution of this invention is a porous polyimide film original fabric having a tensile strength of 45 MPa or more as specified by the ASTM standard D638. A porous polyimide film original fabric which comprises polyimide containing a structural unit represented by the following formula (1-1) and a structural unit represented by the following formula (1-2), wherein A11 and A12 each independently represent a tetravalent aromatic group derived from an acid anhydride containing an aromatic tetracarboxylic anhydride, and B11 and B12 each independently represent a divalent diamine residue derived from an aromatic diamine. At least one selected from the group consisting of A12 and B12 contains a divalent spacer group in its structure.

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Inventors:

Kaoru Ishikawa
Mikio Nishibata
Yoshimura Kawamura
Hiroaki Nakao

Application Number:

JP2018016820A

Publication Date:

December 13, 2023

Filing Date:

February 01, 2018

Export Citation:

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