Title:
PRODUCTION OF DIALKYL CARBONATE
Document Type and Number:
Japanese Patent JPH1045676
Kind Code:
A
Abstract:
To facilitate the separation and recovery of a product (a dialkyl carbonate) and a catalyst by carrying out the decarbonylating reaction of a dialkyl oxalate under specific conditions.
The decarbonylating reaction of a dialkyl oxalate is carried out in the vapor phase in the presence of an oxide of a group IIA metal (magnesia, calcium oxide, barium oxide, etc.) or an oxide of a group IIIA metal (alumina, indium oxide, etc.) having 5-30m2/g specific surface area. Thereby, a dialkyl carbonate useful as a raw material for producing organic synthetic raw materials for medicines, agrochemicals, etc., or a raw material for producing polycarbonates, urethanes, etc., can be obtained without relying phosgene having strong toxicity.
Inventors:
MATSUZAKI TOKUO
NAKAMURA YASUO
MANABE TAKUMI
NAKAMURA YASUO
MANABE TAKUMI
Application Number:
JP20468196A
Publication Date:
February 17, 1998
Filing Date:
August 02, 1996
Export Citation:
Assignee:
UBE INDUSTRIES
International Classes:
B01J21/04; B01J21/10; C07B61/00; C07C68/00; C07C69/96; (IPC1-7): C07C69/96; B01J21/04; B01J21/10; C07C68/00
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