发明授权
- 专利标题： Recovery of anthracene and carbazole
- 专利标题（中）： 蒽醌和卡巴唑的还原
-
申请号： US3624174D申请日： 1970-05-11
-
公开(公告)号： US3624174A公开(公告)日： 1971-11-30
- 发明人: SUGERMAN GERALD
- 申请人： CHEM SYSTEMS
- 专利权人： Chem Systems
- 当前专利权人： Chem Systems
- 优先权： US3640770 1970-05-11
- 主分类号： C07C7/06
- IPC分类号： C07C7/06 ; C07D209/84 ; C07C15/28
摘要：
This invention is directed towards an improved process for obtaining anthracene and carbazole from mixtures thereof containing phenanthrene. More specifically, the invention teaches the removal of the anthracene and carbazole from such admixtures by means of azeotropic distillation and selective crystallization.
信息查询
