发明授权
- 专利标题： Process for producing tetrabromobisphenol A
- 专利标题（中）： 生产四溴异苯酚A的方法
-
申请号： US745888申请日： 1991-08-16
-
公开(公告)号： US5138103A公开(公告)日： 1992-08-11
- 发明人: Hisao Eguchi , Masashige Kubo , Noritaka Nagasaki , Koji Kunimoto
- 申请人： Hisao Eguchi , Masashige Kubo , Noritaka Nagasaki , Koji Kunimoto
- 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： JPX2-217027 19900820; JPX3-132155 19910509
- 主分类号： C07C37/62
- IPC分类号： C07C37/62
摘要：
A process for producing tetrabromobisphenol A of high quality, which comprises brominating bisphenol A with bromine, wherein a solvent mixture comprising a hydrohalogenic acid and an alcohol, is used as the solvent for reaction. Also disclosed is a process for producing tetrabromobisphenol A of high quality, which comprises brominating bisphenol A with bromine in an alcohol, wherein the reaction temperature is set at a level of from -10.degree. to +20.degree. C., and water is added in an aging step.
公开/授权文献
信息查询
