Dehydrocyanation of aliphatic dinitriles
US5352819A · kind A · utility
1Cited by
5References
20Claims
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Key dates
| Filing date | May 20, 1993 |
| Grant date | Oct 4, 1994 |
| Priority date | — |
| Expiry date | May 20, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C253/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Branched saturated dinitrile byproducts, e.g. 2-methylglutaronitrile, 2-ethylsuccinonitrile and mixtures thereof, are converted into useful ethylenic nitriles by dehydrocyanating same, in vapor phase, in the presence of an at least partially acidified cation exchange substrate, notably a molecular sieve, clay, acid oxide or lamellar phosphate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.