Title:
NEW BISMALEIMIDE AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3247901
Kind Code:
B2
Abstract:
PURPOSE: To provide a new bismaleimide capable of giving transparent, flexible polyimide resins without impairing high heat resistance inherent in them.
CONSTITUTION: The objective bismaleimide of formula I (R is H, halogen or methyl; X and Y are each H, halogen or 1-10C alkyl), e.g. norbornane- bismethylmaleimide. The maleimide of the formula I can be obtained by cyclodehydration of a bismaleamic acid of formula II. This bismaleamic acid can be prepared by addition reaction between an alicyclic diamine compound of formula III and maleic acid anhydride or its derivative of formula IV.
Inventors:
Masatoshi Takagi
Taiji Kameoka
Toshio Kato
Ryuji Haseyama
Taiji Kameoka
Toshio Kato
Ryuji Haseyama
Application Number:
JP3171492A
Publication Date:
January 21, 2002
Filing Date:
February 19, 1992
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
C07D207/452; C07C233/09; C07C233/13; C07D207/456; C08F22/36; C08F222/40; (IPC1-7): C07D207/452; C07C233/09; C07C233/13; C07D207/456; C08F222/40
Domestic Patent References:
| JP2501834A | ||||
| JP6502208A |