Title:
PROCESS FOR PRODUCING cis-EPOXYSUCCINIC ACID SALT
Document Type and Number:
WIPO Patent Application WO/1994/017049
Kind Code:
A1
Abstract:
A process for producing highly pure cis-epoxysuccinic acid salt in a high yield while suppressing the amount of DL-tartaric acid salt as a by-product by epoxidizing maleic acid salt with hydrogen peroxide in the presence of an epoxidation catalyst, wherein the epoxidation is conducted in an aqueous solution containing a water-soluble alcohol in an amount of 30-90 vol. %. It is possible to recycle the mother liquor freed of the formed cis-epoxysuccinic acid salt to the reaction system. The obtained succinic acid salt is useful as a polymer resin additive, a detergent builder (surfactant), and an intermediate for producing tartaric acid.
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Inventors:
SATO KEIICHI (JP)
MURAYAMA KENJI (JP)
IDA KAZUTAKA (JP)
MURAYAMA KENJI (JP)
IDA KAZUTAKA (JP)
Application Number:
PCT/JP1994/000053
Publication Date:
August 04, 1994
Filing Date:
January 17, 1994
Export Citation:
Assignee:
MITSUBISHI CHEM IND (JP)
SATO KEIICHI (JP)
MURAYAMA KENJI (JP)
IDA KAZUTAKA (JP)
SATO KEIICHI (JP)
MURAYAMA KENJI (JP)
IDA KAZUTAKA (JP)
International Classes:
C07D301/12; C07B61/00; C07D303/48; (IPC1-7): C07D301/12; C07D303/48
Foreign References:
| JPH04290879A | 1992-10-15 | |||
| JPS53137912A | 1978-12-01 | |||
| JPS52108923A | 1977-09-12 |
Other References:
See also references of EP 0680957A4
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