发明授权
- 专利标题: Process for the preparation of polycarbonates
- 专利标题(中): 聚碳酸酯的制备方法
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申请号: US20502申请日: 1993-02-22
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公开(公告)号: US5336750A公开(公告)日: 1994-08-09
- 发明人: Hendrik E. Tuinstra , Harold D. Myers
- 申请人: Hendrik E. Tuinstra , Harold D. Myers
- 申请人地址: MI Midland
- 专利权人: The Dow Chemical Company
- 当前专利权人: The Dow Chemical Company
- 当前专利权人地址: MI Midland
- 主分类号: C08G64/22
- IPC分类号: C08G64/22 ; C08G64/30 ; C08G64/40 ; C08G64/24
摘要:
A process for the preparation of a polycarbonate comprising reacting a diaryl carbonate with a bisphenol to produce a polycarbonate and a phenol, regenerating the diaryl carbonate by reacting the phenol byproduct with a carbonyl halide, and optionally recycling the hydrogen halide using a metal Redox captive halogen swing reactor system.
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