Readily processable polyimide and preparation process of same

Details Readily processable polyimide and preparation process of same Readily processable polyimide and preparation process of same

1992-07-15

1993-12-07

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, 528172, 528183, 528184, 528185, 528187, 528188, 528229, C08G 6926

Patent

active

052684474

ABSTRACT:
A readily melt processable polyimide obtained by reacting diamine represented by the formula: 4,4' ##STR1## wherein n is an integer of 1 or 2, with 3,3'4,4' -diphenylethertetracarboxylic dianhydride and/or 4,4' -(p-phenylenedioxy)diphthalic dianhydride or a mixture of these tetracarboxylic acid dianhydrides and pyromellitic dianhydride in the presence of phthalic anhydride.

REFERENCES:
patent: 3959350 (1976-05-01), Rogers
patent: 4048147 (1977-09-01), Arakawa et al.
patent: 4876330 (1989-10-01), Higoshi et al.
patent: 4910288 (1990-03-01), Dellacoletta
patent: 4978692 (1990-12-01), Ezawa et al.
patent: 4994544 (1991-02-01), Nagahiro et al.

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