Title:
AROMATIC DIAMINE AND POLYIMIDE, AND THEIR PRODUCTION
Document Type and Number:
Japanese Patent JP2960281
Kind Code:
B2
Abstract:
PURPOSE: To provide a polyimide soluble in organic solvents, excellent in adhesive strength and melt flow stability, and useful for electric and electronic parts, etc., by imidating a polyamic acid obtained by reacting a specific aromatic diamine with a specific tetracarboxylic dianhydride.
CONSTITUTION: An aromatic diamine component consisting mainly of one or more kinds of aromatic diamine compounds of formula I [m, n are 0.1; R is group of formula II (R1-R4 are H, halogen, 1-8C alkyl, aryl, etc.), etc.], such as 3,3'-diamino-4,4'-diphenoxybenzophenone, is reacted with a tetracarboxylic dianhydride of formula III (Ar is tetravalent group), such as pyromellitic dianhydride, and the obtained polyamic acid is thermally or chemically imidated to obtain the objective polyimide of formula IV having an intrinsic viscosity of 0.01-3.0dl/g. The compound of formula I is a new substance, and obtained by reducing an aromatic dinitro compound of formula V.
Inventors:
Yamashita Wataru
Yuichi Okawa
Oikawa Hideaki
Tadashi Asanuma
Yuko Ishihara
Mitsuo Matsuo
Yamaguchi Keisaburo
Akihiro Yamaguchi
Yuichi Okawa
Oikawa Hideaki
Tadashi Asanuma
Yuko Ishihara
Mitsuo Matsuo
Yamaguchi Keisaburo
Akihiro Yamaguchi
Application Number:
JP11834093A
Publication Date:
October 06, 1999
Filing Date:
May 20, 1993
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
C07C205/45; C07C221/00; C07C225/22; C07C201/12; C08G73/10; C08G73/12; C08J5/18; C08L79/08; (IPC1-7): C08G73/12; C08J5/18; C08L79/08
Domestic Patent References:
| JP477585A |
Attorney, Agent or Firm:
Shotaro Mogami
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