| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing diaryl carbonates from dialkyl carbonates and aromatic hydroxy compounds. <P>SOLUTION: The method uses at least two reaction columns, a process section for recovering the dialkyl carbonate used in the reaction and for removing the alcohol of the reaction, one or more process steps for recovering the by-products obtained in the process, which have a boiling point between that of the dialkyl carbonate and that of the alkyl aryl carbonate formed during the production of the diaryl carbonate, and a process step for further purification of the diaryl carbonate obtained from the reaction columns. <P>COPYRIGHT: (C)2010,JPO&INPIT |
