Invention Grant
- Patent Title: Process for the preparation of polycarbonates and diaryl carbonate
- Patent Title (中): 制备聚碳酸酯和碳酸二芳基酯的方法
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Application No.: US12370182Application Date: 2009-02-12
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Publication No.: US07863403B2Publication Date: 2011-01-04
- Inventor: Helmut-Werner Heuer , Pieter Ooms
- Applicant: Helmut-Werner Heuer , Pieter Ooms
- Applicant Address: DE Leverkusen
- Assignee: Bayer MaterialScience AG
- Current Assignee: Bayer MaterialScience AG
- Current Assignee Address: DE Leverkusen
- Agency: Connolly Bove Lodge & Hutz LLP
- Priority: DE102008008841 20080213; DE102008038031 20080816
- Main IPC: C08G64/00
- IPC: C08G64/00 ; C08G63/02
Abstract:
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.
Public/Granted literature
- US20090240021A1 PROCESS FOR THE PREPARATION OF POLYCARBONATES AND DIARYL CARBONATE Public/Granted day:2009-09-24
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