JPS5513234A - Preparation of polymaleimide - Google Patents
Preparation of polymaleimideInfo
- Publication number
- JPS5513234A JPS5513234A JP8610978A JP8610978A JPS5513234A JP S5513234 A JPS5513234 A JP S5513234A JP 8610978 A JP8610978 A JP 8610978A JP 8610978 A JP8610978 A JP 8610978A JP S5513234 A JPS5513234 A JP S5513234A
- Authority
- JP
- Japan
- Prior art keywords
- polymaleimide
- reaction mixture
- added
- maleic anhydride
- basic compound
- 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.)
- Pending
Links
Landscapes
- Pyrrole Compounds (AREA)
Abstract
PURPOSE: To obtain the title compound, a raw material for thermosetting resins having improved heat resistance and dimensional stability, in high purity, by newtralizing a polymaleimide precipitated from a reaction mixture of a maleic anhydride and a polyamine with a basic compound, and by separating and washing the polymer.
CONSTITUTION: Water is added solwly to a reaction mixture obtained by reacting maleic anhydride with a primary polyamine, e.g. m- or p-phenylenediamine, in an organic solvent, e.g. dimethylformamide, in the presence of a dehydrating agent, e.g. acetic anhydride, and a catalyst to deposit a solid polymaleimide, which is separated and suspended in an aqueous medium. A basic compound, e.g. aqueous ammonia or lithium hydroxide, is added to the suspension thus obtained to adjust pH 7W10, and the polymaleimide is isolated and washed.
EFFECT: Ready removal of impurities and uniform particle sizes.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8610978A JPS5513234A (en) | 1978-07-17 | 1978-07-17 | Preparation of polymaleimide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8610978A JPS5513234A (en) | 1978-07-17 | 1978-07-17 | Preparation of polymaleimide |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5513234A true JPS5513234A (en) | 1980-01-30 |
Family
ID=13877527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8610978A Pending JPS5513234A (en) | 1978-07-17 | 1978-07-17 | Preparation of polymaleimide |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5513234A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180124877A (en) | 2016-03-29 | 2018-11-21 | 닛뽄 가야쿠 가부시키가이샤 | A maleimide resin, a curable resin composition, and a cured product thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5323396A (en) * | 1976-08-16 | 1978-03-03 | Mitsui Toatsu Chem Inc | Preparation of polymaleimide |
-
1978
- 1978-07-17 JP JP8610978A patent/JPS5513234A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5323396A (en) * | 1976-08-16 | 1978-03-03 | Mitsui Toatsu Chem Inc | Preparation of polymaleimide |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180124877A (en) | 2016-03-29 | 2018-11-21 | 닛뽄 가야쿠 가부시키가이샤 | A maleimide resin, a curable resin composition, and a cured product thereof |
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