发明授权
- 专利标题: Method and plant for producing polycarbonate
- 专利标题(中): 生产聚碳酸酯的方法和设备
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申请号: US14409592申请日: 2013-06-13
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公开(公告)号: US09410015B2公开(公告)日: 2016-08-09
- 发明人: Michael Streng
- 申请人: EPC ENGINEERING CONSULTING GMBH
- 申请人地址: DE Rudolstadt
- 专利权人: EPC ENGINEERING CONSULTING GMBH
- 当前专利权人: EPC ENGINEERING CONSULTING GMBH
- 当前专利权人地址: DE Rudolstadt
- 代理机构: Hamre, Schumann, Mueller & Larson, P.C.
- 优先权: DE102012105296 20120619
- 国际申请: PCT/EP2013/062240 WO 20130613
- 国际公布: WO2013/189823 WO 20131227
- 主分类号: C08G64/00
- IPC分类号: C08G64/00 ; C08G64/30 ; B01J19/18 ; C08G64/20 ; B01J19/24 ; C08G63/02
摘要:
The invention relates to a method for producing a polycarbonate comprising at least the following steps: a) transesterification of one or more bisphenols with one or more diaryl carbonates in at least one transesterification reactor under continuous removal of the hydroxy aryl reaction product released, b) pre-polycondensation of the reaction product of the transesterification in at least one pre-polycondensation reactor under continuous removal of the hydroxy aryl reaction product released, c) polycondensation of the reaction product of the pre-polycondensation in at least one polycondensation reactor, wherein the aryl reaction product is removed during the transesterification reaction and the hydroxy aryl reaction product is removed during the pre-polycondensation reaction through a common column, wherein entrained diaryl carbonate is separated from the hydroxy aryl reaction product drawn off.
公开/授权文献
- US20150259473A1 METHOD AND PLANT FOR PRODUCING POLYCARBONATE 公开/授权日:2015-09-17
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