发明授权
- 专利标题: Method for recovering hydrobromic acid and methanol
- 专利标题(中): 回收氢溴酸和甲醇的方法
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申请号: US469385申请日: 1990-01-24
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公开(公告)号: US4990321A公开(公告)日: 1991-02-05
- 发明人: Masakatsu Sato , Sadami Shimizu , Hanzo Tamabayashi
- 申请人: Masakatsu Sato , Sadami Shimizu , Hanzo Tamabayashi
- 申请人地址: JPX Shinnanyo
- 专利权人: Tosoh Corporation
- 当前专利权人: Tosoh Corporation
- 当前专利权人地址: JPX Shinnanyo
- 优先权: JPX1-16295 19890127
- 主分类号: C01B7/09
- IPC分类号: C01B7/09 ; C07C25/18 ; C07C29/80 ; C07C31/04
摘要:
A method for recovering hydrobromic acid and methanol from a filtrate obtained by brominating bisphenol A in a methanol solvent and filtering off the resulting brominated bisphenol A, which comprises adding water to the filtrate, followed by distillation for purification.
公开/授权文献
- US4471678A Ring saw for cutting a tube 公开/授权日:1984-09-18
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