发明申请
- 专利标题： PROCESS FOR THE PREPARATION OF POLYCARBONATES AND DIARYL CARBONATE
- 专利标题（中）： 制备聚碳酸酯和二氧化碳的方法
-
申请号： US12370182申请日： 2009-02-12
-
公开(公告)号： US20090240021A1公开(公告)日： 2009-09-24
- 发明人: Helmut-Werner Heuer , Pieter Ooms
- 申请人： Helmut-Werner Heuer , Pieter Ooms
- 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
- 优先权： DE102008008841.2 20080213; DE102008038031.8 20080816
- 主分类号： C08G64/30
- IPC分类号： C08G64/30 ; B01J19/18
摘要：
The present invention relates to a process for the continuous preparation of polycarbonates or diaryl carbonates by the method of the phase boundary process, in which both the mixing of the organic and aqueous phase and the upstream oligomerization step or aryl chloroformate and/or diaryl carbonate preparation step are effected in a special pump.