PRODUCTION OF AROMATIC POLYIMIDE - MITSUBISHI ELECTRIC CORP

Title:

PRODUCTION OF AROMATIC POLYIMIDE

Document Type and Number:

Japanese Patent JPS63254131

Kind Code:

A

Abstract:

PURPOSE: To obtain a polyimide having excellent moldability, heat resistance and mechanical characteristics, by reacting p-phenylenediamine with a pyromellitic acid derivative, aromatic diamine and aromatic tetracarboxylic acid derivative in a given order and then heating the resultant product.

CONSTITUTION: p-Phenylenediamine is reacted with a pyromellitic acid derivative and then an aromatic diamine and aromatic tetracarboxylic acid derivative or the aromatic diamine is reacted with the aromatic tetracarboxylic acid derivative. Furthermore, the p-phenylenediamine and pyromellitic acid derivative are added so as to provide a substantially equimolar amount of the respective total numbers of mol. of the p-phenylenediamine and aromatic diamine with pyromellitic acid derivative and aromatic tetracarboxylic acid derivative and reacted to afford a polyamic acid or derivative thereof, which is then thermally reacted.

Inventors:

KITAHASHI MIYAKO
YAMAMOTO YASUSHI
ETO SHOHEI
FUKAMI AKIRA

Application Number:

JP8795887A

Publication Date:

October 20, 1988

Filing Date:

April 10, 1987

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP

International Classes:

C08G73/10; (IPC1-7): C08G73/10

Domestic Patent References:

JPH01131241A	1989-05-24
JPH01103626A	1989-04-20

Attorney, Agent or Firm:

Mamoru Takada (1 person outside)

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