Reduction of diimino compounds to diamino compounds
US4160785A · kind A · utility
3Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1976 |
| Grant date | Jul 10, 1979 |
| Priority date | — |
| Expiry date | Jul 1, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/52
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Organic diamines can be prepared by hydrogenating a preformed diimine in the presence of methanol and in the further presence of the tertiary alkyl mono-amine used to make the diimino compound. The diamino compounds thus obtained are useful as catalysts in the preparation of polyphenylene oxide resins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.