发明授权
- 专利标题： Process for preparing diaryl carbonates and polycarbonates
- 专利标题（中）： 制备碳酸二芳基酯和聚碳酸酯的方法
-
申请号： US13071944申请日： 2011-03-25
-
公开(公告)号： US09175135B2公开(公告)日： 2015-11-03
- 发明人: Pieter Ooms , Andreas Bulan
- 申请人： Pieter Ooms , Andreas Bulan
- 申请人地址： DE Leverkusen
- 专利权人： Bayer MaterialScience AG
- 当前专利权人： Bayer MaterialScience AG
- 当前专利权人地址： DE Leverkusen
- 代理机构： Drinker Biddle & Reath LLP
- 优先权： EP10158446 20100330
- 主分类号： C07C68/02
- IPC分类号： C07C68/02 ; C08G64/30 ; C01B7/04 ; C01B7/07
摘要：
The present invention relates to a process for the continuous preparation of diaryl carbonates from phosgene and at least one monohydroxy compound (monophenol) in the presence of catalysts, and also the use thereof for preparing polycarbonates. The hydrogen chloride formed in the reaction is converted by thermal oxidation into chlorine, with the chlorine being recirculated to the preparation of phosgene. In particular, the process comprises utilization of the hydrogen chloride formed for the process for preparing diphenyl carbonate (DPC process).
公开/授权文献
信息查询
