发明名称 |
Method for preparing diaryl carbonates with improved selectivity |
摘要 |
Diaryl carbonates such as diphenyl carbonate are prepared by reaction of hydroxyaromatic compounds such as phenol with oxygen and carbon monoxide in the presence of a catalyst composition comprising a Group VIIIB metal such as palladium or a compound thereof, a bromide source such as a quaternary ammonium or hexaalkylguanidinium bromide and a polyaniline in partially oxidized and partially reduced form. The polyaniline is preferably halide-doped and in the form of a blend with a binder polymer containing ether or ester groups and a complex-forming salt.
|
申请公布号 |
US5917077(A) |
申请公布日期 |
1999.06.29 |
申请号 |
US19980088023 |
申请日期 |
1998.06.01 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
CHAUDHARI, RAGHUNATH VITTHAL;GUPTE, SUNIL PURUSHOTTAM;KELKAR, ASHUTOSH ANANT;KANAGASABAPATHY, SUBBAREDDIAR;RADHAKRISHNAN, SUBRAMANIAM |
分类号 |
C07C68/00;(IPC1-7):C07C68/00 |
主分类号 |
C07C68/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|