专利检索 ap:("CHEM SYSTEMS") AND inv:"SUGERMAN GERALD" 第 1 页

1.

发明授权
Recovery of anthracene and carbazole 失效
标题翻译：蒽醌和卡巴唑的还原

公开(公告)号：US3624174A

公开(公告)日：1971-11-30

申请号：US3624174D

申请日：1970-05-11

申请人： CHEM SYSTEMS

发明人： SUGERMAN GERALD

IPC分类号： C07C7/06 , C07D209/84 , C07C15/28

CPC分类号： C07D209/84 , C07C7/06 , C07C2603/24 , 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.