发明授权
- 专利标题: Process for preparing diaryl carbonate
- 专利标题(中): 制备碳酸二芳基酯的方法
-
申请号: US944231申请日: 1997-10-06
-
公开(公告)号: US5892089A公开(公告)日: 1999-04-06
- 发明人: Katsumasa Harada , Ryoji Sugise , Koichi Kashiwagi , Yoichi Imbe , Takashi Doi , Keigo Nishihira , Shuji Tanaka , Hirofumi Ii
- 申请人: Katsumasa Harada , Ryoji Sugise , Koichi Kashiwagi , Yoichi Imbe , Takashi Doi , Keigo Nishihira , Shuji Tanaka , Hirofumi Ii
- 申请人地址: JPX Yamaguchi
- 专利权人: Ube Industries, Ltd.
- 当前专利权人: Ube Industries, Ltd.
- 当前专利权人地址: JPX Yamaguchi
- 优先权: JPX8-264763 19961004; JPX8-264764 19961004
- 主分类号: C07C68/00
- IPC分类号: C07C68/00
摘要:
A process for preparing a diaryl carbonate from a diaryl oxalate in a liquid phase by decarbonylation is conducted by the steps of:1) performing a decarbonylation reaction of a diaryl oxalate in the presence of an organic phosphorus compound catalyst to give a reaction mixture of a diaryl carbonate and the organic phosphorus compound catalyst;2) recovering the diaryl carbonate from the reaction mixture; and3) performing a decarbonylation reaction of a diaryl oxalate in the presence of the reaction mixture from which the diaryl carbonate has been recovered and to which a halogen atom-containing compound is added, to give a reaction mixture of a diaryl carbonate and the organic phosphorus compound catalyst.
公开/授权文献
- US4216365A Machine for welding provided with a rotary platform 公开/授权日:1980-08-05