发明名称 |
PROCESS FOR THE PREPARATION OF DIARYL CARBONATE |
摘要 |
The invention relates to a process for the preparation of a diaryl carbonate by transesterification of an aromatic alcohol with a dialkyl carbonate in the presence of a transesterification catalyst during a period of time [ta], in which the aryl moiety is selected from unsubstituted phenyl and mono-, di- and trisubstituted phenyl groups, in which the alkyl moiety is selected from C2 to C4 linear and branched alkyl groups, in which the catalyst concentration is designated [ca], expressed as gram catalyst per gram of aromatic alcohol and dialkyl carbonate, in which the period of time [tm] and catalyst concentration [cm] are determined to arrive at a pre-set approach to the equilibrium for the transesterification of the aromatic alcohol with dimethyl carbonate to methyl aryl carbonate and methanol, in which the product [ca]*ta is at least 1.5*[cm]*tm under otherwise the same reaction conditions. |
申请公布号 |
EP2125693(A1) |
申请公布日期 |
2009.12.02 |
申请号 |
EP20080708008 |
申请日期 |
2008.01.21 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
发明人 |
VAN DER HEIDE, EVERT;NISBET, TIMOTHY MICHAEL;VAPORCIYAN, GARO GARBIS;VROUWENVELDER, CORNELIS LEONARDO MARIA |
分类号 |
C07C68/06;C07C69/96 |
主分类号 |
C07C68/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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