发明名称 |
Process for producing diaryl carbonate |
摘要 |
A process for producing diaryl carbonate which comprises (A) a step for producing dialkyl carbonate represented by the general formula RO-CO-OR by reacting urea with alkyl alcohol represented by the general formula ROH, (B) a step for producing both alkyl aryl carbonate represented by the general formula RO-CO-OAr and diaryl carbonate represented by the general formula ArO-CO-OAr by reacting dialkyl carbonate produced in the above step (A) with an aromatic hydroxy compound represented by the general formula ArOH, and (C) a step for producing diaryl carbonate represented by the general formula ArO-CO-OAr by allowing to conduct disproportionation reaction of unreacted alkyl aryl carbonate produced in the above step (B), wherein R shows an alkyl group and Ar shows a non-substituted phenyl group or a phenyl group substituted by alkyl group, alkoxy group, aryl group, aryloxy group or halogen.
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申请公布号 |
US5980445(A) |
申请公布日期 |
1999.11.09 |
申请号 |
US19970965617 |
申请日期 |
1997.11.06 |
申请人 |
MITSUBISHI GAS CHEMICAL COMPANY, INC. |
发明人 |
MIZUKAMI, MASAMICHI;ARAI, YOSHIHISA;HARADA, HIDEFUMI;OHSHIDA, TAKUO;OHGI, HIROAKI |
分类号 |
C07C68/00;C07C68/06;(IPC1-7):C07C69/96 |
主分类号 |
C07C68/00 |
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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