N,N'-bis(maleimide)/hindered diamine copolymerizate
US5206338A · kind A · utility
1Cited by
3References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1991 |
| Grant date | Apr 27, 1993 |
| Priority date | — |
| Expiry date | Nov 5, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/126
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel imido copolymers having improved thermal properties and well adapted for the production, e.g., of molded and cellular shaped articles, and laminates, are formed from (a) at least one N,N'-bis(maleimide), (b) at least one hindered diprimary diamine, e.g., of 4,4'-diamino-3,3',5,5'-tetraalkyldiphenylmethane or 1,3- or 1,4-(diamino)trialkylbenzene type, and, optionally, either (c.sub.1) at least one N-[(meth)allyloxyphenyl]maleimide or (c.sub.2) admixture of at least one N-[(meth)allyloxyphenyl]maleimide with at least one N-[(meth)allyloxymono/di(meth)allylphenyl]maleimide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.