发明申请
US20120108782A1 DEVICE AND METHOD FOR DEGASSING SOLVENT-CONTAINING POLYCARBONATE SOLUTIONS
有权
用于溶解含溶剂的聚碳酸酯溶液的装置和方法
- 专利标题: DEVICE AND METHOD FOR DEGASSING SOLVENT-CONTAINING POLYCARBONATE SOLUTIONS
- 专利标题(中): 用于溶解含溶剂的聚碳酸酯溶液的装置和方法
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申请号: US13318487申请日: 2010-05-26
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公开(公告)号: US20120108782A1公开(公告)日: 2012-05-03
- 发明人: Thomas König , Klemens Kohlgrüber , René De Cleyn , Johan Vaes , Johan Vanden Eynde , Dirk Van Meirvenne
- 申请人: Thomas König , Klemens Kohlgrüber , René De Cleyn , Johan Vaes , Johan Vanden Eynde , Dirk Van Meirvenne
- 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: EP09007268.7 20090530
- 国际申请: PCT/EP2010/003208 WO 20100526
- 主分类号: C08G64/40
- IPC分类号: C08G64/40 ; B29B13/00
摘要:
The invention relates to an apparatus and a process for devolatilizing solvent-containing polycarbonate solutions. By employing the inventive apparatus, polycarbonates with low residual values of volatile constituents are produced from solvent-containing polymer melts, which improved optical properties, especially yellowness index, with the aid of an apparatus combination of a heatable tubular devolatilizer and a vented extruder.