发明名称 |
Process for producing a diaryl carbonate |
摘要 |
A diaryl carbonate with a high degree of purity is produced at a high yield by (A) subjecting (a) a diaryl oxalate and a phenol compound or (b) an alkylaryl oxalate to transesterification reaction in one or two stages in the presence of a catalyst to prepare a diaryl oxalate, while removing a by-product from the reaction system; (B) collecting the diaryl oxalate from the resultant reaction product mixture of the step (A); (C) subjecting the diaryl oxalate to a decarbonylation reaction, preferably in the presence of a phosphorous compound-containing catalyst, to convert the diaryl oxalate to a corresponding diaryl carbonate, while removing a reaction by-product comprising carbon monoxide from the reaction system; and (D) collecting the diaryl carbonate from the reaction product mixture of the step (C). <IMAGE> |
申请公布号 |
EP0795539(B1) |
申请公布日期 |
2001.10.31 |
申请号 |
EP19970104018 |
申请日期 |
1997.03.11 |
申请人 |
UBE INDUSTRIES, LTD. |
发明人 |
NISHIHIRA, KEIGO;TANAKA, SHUJI;NISHIDA, YUKI;II, HIROFUMI;FUJITSU, SATORU;HARADA, KATSUMASA;SUGISE, RYOJI;KASHIWAGI, KOICHI;DOI, TAKASHI |
分类号 |
C07C67/02;C07C67/03;C07C68/00;C07C69/36;C07C69/96 |
主分类号 |
C07C67/02 |
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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