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Title:
芳香族カーボネート類の製造方法
Document Type and Number:
Japanese Patent JP4193442
Kind Code:
B2
Abstract:

To provide a method for continuously producing an aromatic carbonate in high energy efficiency without using a complicated process.

This method for producing the aromatic carbonate comprises, in a method for producing an alkylaryl carbonate and/or a diaryl carbonate by reacting a dialkyl carbonate with an aromatic hydroxy compound, using a reactor constituted of a liquid-phase part divided into two or more sections and a vapor-phase part divided into two or more independent sections in which adjacent sections are connected by a lower part partition making the liquid-phase part into a closed section and by an upper part partition making the vapor-phase part into a closed section, sequentially circulating the liquid phase from the head section to the tail section and carrying out a transesterification reaction while continuously extracting the vapor phase composed of a light fraction containing an aliphatic alcohol as a by-product from the top of each section.

COPYRIGHT: (C)2004,JPO


Inventors:
Takashi Kanamaru
Application Number:
JP2002234884A
Publication Date:
December 10, 2008
Filing Date:
August 12, 2002
Export Citation:
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Assignee:
Mitsubishi Chemical Corporation
International Classes:
C07C68/06; C07B61/00; C07C69/96
Domestic Patent References:
JP8188558A
JP6234707A
Attorney, Agent or Firm:
Hasegawa Soji