发明授权
- 专利标题： Process for the preparation of condensed phosphoric esters
- 专利标题（中）： 缩合磷酸酯的制备方法
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申请号： US10019462申请日： 2002-04-15
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公开(公告)号： US06605736B1公开(公告)日： 2003-08-12
- 发明人: Shin Nakamura , Kazuo Noguchi , Taku Fujisawa , Takafumi Ohkawa
- 申请人： Shin Nakamura , Kazuo Noguchi , Taku Fujisawa , Takafumi Ohkawa
- 优先权： JP11/182605 19990628
- 主分类号： C07F902
- IPC分类号： C07F902
摘要：
A condensed phosphoric ester having a very low content of volatile components is provided by a process including a first step of reacting a phosphorus oxytrihalide with a bisphenol-based compound to prepare a phosphorohalidate; a second step of removing unreacted phosphorus oxytrihalide; and a third step of reacting the phosphorohalidate with a monophenol-based compound at a specific ratio.
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