发明授权
- 专利标题: Process for the production of 4-nitroso-diphenylamine
- 专利标题(中): 生产4-亚硝基二苯胺的方法
-
申请号: US338219申请日: 1973-03-05
-
公开(公告)号: US4034042A公开(公告)日: 1977-07-05
- 发明人: Karlfried Wedemeyer , Rudolf Helm
- 申请人: Karlfried Wedemeyer , Rudolf Helm
- 申请人地址: DT
- 专利权人: Bayer Aktiengesellschaft
- 当前专利权人: Bayer Aktiengesellschaft
- 当前专利权人地址: DT
- 优先权: DT2211341 19720309
- 主分类号: C07C211/56
- IPC分类号: C07C211/56 ; C07C20060101 ; C07C67/00 ; C07C209/00 ; C07C209/54 ; C07C87/28
摘要:
Object of the invention is a process for the production of 4-nitroso diphenylamine wherein N-nitroso diphenylamine is rearranged in the presence of an alcoholic hydrogen chloride solution by selecting the reaction conditions in such a way that the hydrochloride of 4-nitroso diphenylamine remains dissolved in the reaction medium. In this way spontaneous, uncontrollable decompositions do not occur.
公开/授权文献
信息查询