专利检索 ap:("Tadashi Komiyama" OR "Hisaharu Kuboyama" OR "Takashi Jimbo" OR "Hiroyoshi Watanabe" OR "Shuichi Tokumoto" OR "Yumiko Endoh" OR "Eiichi Sugiyama" OR "Yoshitaro Naganuma") AND inv:"Yumiko Endoh" 第 1 页

1.

发明授权
Process for preparation of acyclic ethyleneamines 失效
标题翻译：交联乙烯胺的制备方法

公开(公告)号：US5082972A

公开(公告)日：1992-01-21

申请号：US551086

申请日：1990-07-11

申请人： Tadashi Komiyama , Hisaharu Kuboyama , Takashi Jimbo , Hiroyoshi Watanabe , Shuichi Tokumoto , Yumiko Endoh , Eiichi Sugiyama , Yoshitaro Naganuma

发明人： Tadashi Komiyama , Hisaharu Kuboyama , Takashi Jimbo , Hiroyoshi Watanabe , Shuichi Tokumoto , Yumiko Endoh , Eiichi Sugiyama , Yoshitaro Naganuma

IPC分类号： C07C209/16

CPC分类号： C07C209/16

摘要： At least one of ammonia and ethylenediamine is reacted with monoethanolamine in the presence of a catalyst containing phosphoric acid or its condensate in order to prepare acyclic ethyleneamines, and the catalyst can be improved in performance and the life of the catalyst can be prolonged by feeding a phosphorus-containing material to a reaction system during the reaction. In addition, the catalyst having a deteriorated performance can be reactivated by adding the phosphorus-containing material to the catalyst.