Process for producing cis-epoxysuccinates
US5608089A · kind A · utility
2Cited by
4References
6Claims
0Family size
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Key dates
| Filing date | Aug 24, 1995 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Aug 24, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D303/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing a highly pure cis-epoxysuccinate in a high yield while suppressing a production of DL-tartrate as a by-product by epoxidizing a maleate with hydrogen peroxide in the presence of an epoxidation catalyst, wherein said epoxidation is carried out in an aqueous solution containing 30 to 90% by volume of a water-soluble alcohol. It is possible to recycle the mother liquor separated of the formed cis-epoxysuccinate to the reaction system. The obtained cis-epoxysuccinate is useful as a polymer resin additive, a detergent builder(surfactant) and an intermediate for producing tartaric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.