Preparation process of polyimide

Details Preparation process of polyimide Preparation process of polyimide

1990-11-14

1993-05-11

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528125, 528126, 528128, 528170, 528172, 528173, 528176, 528179, 528183, 528185, 528188, 528220, 528226, 528229, 528351, 528352, C08G 6926, C08G 7310, C08G 802, C08G 1400

Patent

active

052101746

ABSTRACT:
In a process for the preparation of polyimide by reacting a diamine compound with tetracarboxylic dianhydride in a phenol based solvent, an improved process for reacting the diamine compound with tetracarboxylic dianhydride in a solution by forming separate solutions of the tetracarboxylic dianhydride and the diamine compound and mixing the solutions and/or by dissolving tetracarboxylic dianhydride in the phenol-based solvent containing an organic base.

REFERENCES:
patent: 4024101 (1977-05-01), Takekoshi et al.
patent: 4358581 (1982-11-01), Sutton, Jr.
patent: 4687836 (1987-08-01), Ibi et al.
patent: 4696994 (1987-09-01), Nakajima et al.
patent: 4837299 (1989-06-01), Peters et al.
patent: 4871833 (1989-10-01), Hupfer
Applied Polymer Symposium No. 26, 429-435, "The Thermal Stability of Phthalocyanine and Polymeric Phthalocyanine in Air".

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