Title:
PROCESS FOR THE PRODUCTION OF DIARYL CARBONATES
Document Type and Number:
WIPO Patent Application WO2002048088
Kind Code:
A3
Abstract:
A process for catalytic production of diaryl carbonates by oxidative carbonylation of aromatic hydroxy compounds with carbon monoxide and oxygen achieves water removal during reaction by a process comprising the steps of: removing a liquid stream from an oxidative carbonylation reaction mixture in a reaction vessel (1), subjecting the liquid stream to reduced pressure, and returning at least a portion of dried liquid stream to the reaction vessel (1). Typical catalyst systems for oxidative carbonylation contain (A) at least one Group 8, 9, or 10 metal having an atomic number of at least 44 or a compound thereof; (B) at least one alkali metal salt; (C) at least one metal co-catalyst; (D) at least one activating organic solvent; and (E) optionally, at least one base.
Inventors:
OFORI JOHN YAW
PRESSMAN ERIC JAMES
SHALYAEV KIRILL VLADIMIROVICH
WILLIAMS ERIC DOUGLAS
BATTISTA RICHARD ANTHONY
PRESSMAN ERIC JAMES
SHALYAEV KIRILL VLADIMIROVICH
WILLIAMS ERIC DOUGLAS
BATTISTA RICHARD ANTHONY
Application Number:
PCT/US2001/047205
Publication Date:
December 19, 2002
Filing Date:
November 13, 2001
Export Citation:
Assignee:
GEN ELECTRIC (US)
International Classes:
C07B61/00; C07C68/00; C07C69/96; (IPC1-7): C07C68/00; C07C69/96
Domestic Patent References:
| WO2000037419A1 | 2000-06-29 | |||
| WO2000066534A1 | 2000-11-09 | |||
| WO2000066536A1 | 2000-11-09 |
Foreign References:
| US5625091A | 1997-04-29 | |||
| US6114564A | 2000-09-05 | |||
| US5917078A | 1999-06-29 |
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