The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 1994
Filed:
Mar. 09, 1992
Applicant:
Inventors:
Hiroaki Kezuka, Tochigi, JP;
Fumio Okuda, Sodegaura, JP;
Assignee:
Idemitsu Kosan Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
558277 ; 558274 ;
Abstract
A process for producing an organic carbonate which comprises reacting an organic hydroxy compound, carbon monoxide and oxygen in the presence of a catalyst comprising(a) palladium or a palladium compound, (b) a cuprous or cupric compound such as cupric acetate, (c) a quinone or an aromatic diol formed by reduction of the quinone or a mixture thereof such as hydroquinone, and (d) a halogenated onium compound such as (C.sub.4 H.sub.9)NBr is disclosed. According to the invention, an organic carbonate such as diphenyl carbonate can be produced efficiently and economically.