Title:
PROCESS FOR PRODUCING FUMARIC ESTER
Document Type and Number:
WIPO Patent Application WO/2001/060780
Kind Code:
A1
Abstract:
A process for producing a fumaric ester or a fumaric ester having a 1-propenyloxy group, which comprises using an isomerization catalyst containing a Group VIII element to isomerize a maleic ester or a maleic ester having a 2-propenyloxy group in the molecule. Thus, the target compound can be obtained in high yield with high selectivity. The process is hence extremely useful especially in the fields of materials for resins, plasticizers, etc. When a heterogeneous catalyst, which is easily isolated and does not cause corrosion, is used, a high-purity fumaric ester containing no catalyst residue is obtained.
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Inventors:
KADOWAKI YASUSHI
OHTA KEISUKE
KAI KAZUFUMI
OHTA KEISUKE
KAI KAZUFUMI
Application Number:
PCT/JP2001/001028
Publication Date:
August 23, 2001
Filing Date:
February 14, 2001
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
B01J23/40; B01J31/28; C07C67/333; B01J31/24; (IPC1-7): C07C67/333; C07C69/60; C08G18/83; C08G63/91
Foreign References:
| JP2000169423A | 2000-06-20 | |||
| JPH0824664A | 1996-01-30 | |||
| JPH05279292A | 1993-10-26 | |||
| JPS6368529A | 1988-03-28 | |||
| JPS5129401A | 1976-03-12 | |||
| JPS5017044B1 | 1975-06-18 | |||
| EP0957079A1 | 1999-11-17 | |||
| JPH11255691A | 1999-09-21 | |||
| JPH0517383A | 1993-01-26 | |||
| JPH0517382A | 1993-01-26 | |||
| US4868267A | 1989-09-19 |
Other References:
See also references of EP 1176136A4
Attorney, Agent or Firm:
Suzuki, Shunichiro (Nishigotanda 7-chome Shinagawa-ku, Tokyo, JP)
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