Claims
- 1. A polymaleimide prepared by a process which comprises reacting an aromatic dialdehyde of the formula (II): ##STR16## which may be substituted with one or more halogen atoms and alkyl groups; with 2 to 60 moles of an aromatic amine per mole of the aromatic dialdehyde to obtain a polyamine:
- wherein said aromatic amine is represented by the formula (I): ##STR17## wherein X is a hydrogen atom, a halogen atom or an alkyl or alkoxy group each having 1 to 4 carbon atoms; and
- reacting said polyamine with maleic anhydride to obtain a polyamide acid to obtain a polymaleimide.
- 2. A polymaleimide prepared by the process of claim 1, wherein the polymaleimide is represented by the formula: ##STR18## where X's, which may be the same or different, each is a hydrogen, a halogen atom or an alkyl or alkoxy group each having 1 to 4 carbon atoms.
- 3. A polymaleimide prepared by the process claimed in claim 1, wherein the aromatic amine is a compound selected from the group consisting of aniline, toluidine, chloroaniline, bromoaniline, ethylaniline, butylaniline, anisidine, and phenitidine.
- 4. A polymaleimide prepared by the process claimed in claim 1, wherein the aromatic dialdehyde is selected from the group consisting of 1,2-benzene dialdehyde, 1,3-benzene dialdehyde, and 1,4-benzene dialdehyde.
Priority Claims (1)
Number |
Date |
Country |
Kind |
57-121465 |
Jul 1982 |
JPX |
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Parent Case Info
This is a continuation of application Ser. No. 513,519, filed July 13, 1983, now abandoned.
US Referenced Citations (8)
Continuations (1)
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Number |
Date |
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Parent |
513519 |
Jul 1983 |
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