Process for producing polyimide precursor

Details Process for producing polyimide precursor Process for producing polyimide precursor

1984-03-28

1985-02-12

Lee, Lester L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 40, 528 41, 528 43, 528125, 528126, 528128, 528172, 528185, 528188, 528189, 528229, 528352, 528353, C08G 7310

Patent

active

044992521

ABSTRACT:
A process for producing a polyimide precursor having excellent adhesion property and improved moisture resistance by polymerization of an organic tetracarboxylic acid component and a diamine is disclosed. A portion of the organic tetracarboxylic acid is reacted with an aminosilane compound in which H in an amino group is substituted with a monovalent organic group containing a hydrophobic aromatic ring, to produce a silane-modified polycarboxylic acid component and the resulting silane-modified polycarboxylic acid component is polymerized with a diamine together with the residual organic tetracarboxylic acid component.

REFERENCES:
patent: 3576031 (1971-04-01), Holub et al.
patent: 3926911 (1975-12-01), Greber et al.
patent: 3950308 (1976-04-01), Greber et al.
patent: 4200724 (1980-04-01), Darms et al.

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