发明授权
US5354876A Preparation and purification of 1-amino-2-phenoxy-4-hydroxyanthraquinone
失效
1-氨基-2-苯氧基-4-羟基蒽醌的制备和纯化
- 专利标题： Preparation and purification of 1-amino-2-phenoxy-4-hydroxyanthraquinone
- 专利标题（中）： 1-氨基-2-苯氧基-4-羟基蒽醌的制备和纯化
-
申请号： US94988申请日： 1993-07-22
-
公开(公告)号： US5354876A公开(公告)日： 1994-10-11
- 发明人: Reinhold Kohlhaupt
- 申请人： Reinhold Kohlhaupt
- 申请人地址： DEX Ludwigshafen
- 专利权人： BASF Aktiengesellschaft
- 当前专利权人： BASF Aktiengesellschaft
- 当前专利权人地址： DEX Ludwigshafen
- 优先权： DEX4111827 19910411
- 主分类号： C07C221/00
- IPC分类号： C07C221/00 ; C07C225/36 ; C09B1/54 ; C07C225/34
摘要：
Pure 1-amino-2-phenoxy-4-hydroxyanthraquinone is prepared by reacting 1-amino-2-halo-4-hydroxyanthraquinone with phenol in aqueous suspension at pH 9-13 and 130.degree.-160.degree. C., adjusting the reaction mixture pH to 9.5-11.5 after the reaction has ended, separating the reaction product from the liquid phase, and ,washing it with alkaline hypochlorite solution.
公开/授权文献
- US5969816A Direction switched mode-locked laser gyroscope 公开/授权日：1999-10-19
信息查询
