JPS5513202A - Preparation of bismaleimide - Google Patents
Preparation of bismaleimideInfo
- Publication number
- JPS5513202A JPS5513202A JP7317778A JP7317778A JPS5513202A JP S5513202 A JPS5513202 A JP S5513202A JP 7317778 A JP7317778 A JP 7317778A JP 7317778 A JP7317778 A JP 7317778A JP S5513202 A JPS5513202 A JP S5513202A
- Authority
- JP
- Japan
- Prior art keywords
- diaminodiphenylmethane
- formula
- auxiliary
- compound
- starting material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Pyrrole Compounds (AREA)
Abstract
PURPOSE: To obtain the title compound, a starting material of founctional resins, in high yield and without side reactions, by treating 4,4'-diaminodiphenylmethane and maleic anhydride with a lower coarboxylic acid, using a specific reaction auxiliary to inhibit the coagulation of the slurry.
CONSTITUTION: 4,4'-diaminodiphenylmethane of formula I and maleic anhydride are subjected to the ring opening reaction in the presence of an organic solvent and then to the dehydration cyclization by the addition of a Co compound catalyst, a tertiary amine and a lower carboxylic anhydride to give N,N'-(4,4'-Diphenylmethane)bismaleimide of formula II. In these processes, a compound of formula III (Y1WY9=H, NH2, at least one of them is NH2) or formula IV (Y10=C1-5 alkyl, C1-5 alkoxy), e.g. 2,4'-diaminodiphenylmethane etc., is used as a reaction auxiliary. The chemical properties of the auxiliary are similar to the starting material, 4,4'- diaminodiphenylmethane.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53073177A JPS5822113B2 (en) | 1978-06-19 | 1978-06-19 | Method for producing bismaleimide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53073177A JPS5822113B2 (en) | 1978-06-19 | 1978-06-19 | Method for producing bismaleimide |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5513202A true JPS5513202A (en) | 1980-01-30 |
JPS5822113B2 JPS5822113B2 (en) | 1983-05-06 |
Family
ID=13510588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53073177A Expired JPS5822113B2 (en) | 1978-06-19 | 1978-06-19 | Method for producing bismaleimide |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5822113B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62126166A (en) * | 1985-11-26 | 1987-06-08 | Mitsui Toatsu Chem Inc | Bismaleimide composition and production thereof |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59155245A (en) * | 1983-02-24 | 1984-09-04 | 国際交易株式会社 | Cerebral aneurysm clip |
JPH0340254Y2 (en) * | 1985-09-11 | 1991-08-23 | ||
JPH0530736Y2 (en) * | 1986-06-06 | 1993-08-06 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS48103569A (en) * | 1972-04-07 | 1973-12-25 |
-
1978
- 1978-06-19 JP JP53073177A patent/JPS5822113B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS48103569A (en) * | 1972-04-07 | 1973-12-25 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62126166A (en) * | 1985-11-26 | 1987-06-08 | Mitsui Toatsu Chem Inc | Bismaleimide composition and production thereof |
Also Published As
Publication number | Publication date |
---|---|
JPS5822113B2 (en) | 1983-05-06 |
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