Method for making N,N'-methylene bismaleimides and products made therefrom
US3933850A · kind A · utility
1Cited by
1References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 1974 |
| Grant date | Jan 20, 1976 |
| Priority date | — |
| Expiry date | May 28, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D207/44
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method is provided for making a variety of N,N'-methylene bismaleimides by introducing boron trifluoride into a maleimide mixture containing either paraformaldehyde or methanol maleimide. The N,N'-methylene bismaleimides made by the subject method can be symmetrical or unsymmetrical and are useful for making polyimides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.