Preparation of diesters from imide/dinitrile compounds
US8053594B2 · kind B2 · utility
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24Claims
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Key dates
| Filing date | Jul 5, 2007 |
| Grant date | Nov 8, 2011 |
| Priority date | — |
| Expiry date | Feb 14, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D223/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Diester compounds are prepared from imide/dinitrile compounds employing a vapor-phase hydrolysis of dinitrile compounds in the presence of alcohol, more particularly from branched dinitrile compounds, such as methylglutaronitrile or branched dinitrile compounds obtained as by-products in a process for the production of adiponitrile by hydrocyanation of butadiene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.