JPS5513234A - Preparation of polymaleimide - Google Patents

Preparation of polymaleimide

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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
Application number
JP8610978A
Other languages
Japanese (ja)
Inventor
Masayuki Oba
Motoo Kawamata
Hikotada Tsuboi
Nobushi Koga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP8610978A priority Critical patent/JPS5513234A/en
Publication of JPS5513234A publication Critical patent/JPS5513234A/en
Pending legal-status Critical Current

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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
JP8610978A 1978-07-17 1978-07-17 Preparation of polymaleimide Pending JPS5513234A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5323396A (en) * 1976-08-16 1978-03-03 Mitsui Toatsu Chem Inc Preparation of polymaleimide

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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