发明授权
- 专利标题: Preparation of aminoformazans
- 专利标题(中): 氨基甲苯胺的制备
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申请号: US79926申请日: 1993-06-23
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公开(公告)号: US5391719A公开(公告)日: 1995-02-21
- 发明人: Matthias Wiesenfeldt , Klaus Pandl , Manfred Patsch
- 申请人: Matthias Wiesenfeldt , Klaus Pandl , Manfred Patsch
- 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: DEX4221543 19920701
- 主分类号: C09B50/00
- IPC分类号: C09B50/00 ; C09B62/04 ; C09B50/10 ; C09B62/018 ; C09B62/038
摘要:
A process for preparing metal aminoformazans by alkaline hydrolysis of the corresponding acylated amino derivates in aqueous medium, is described, the hydrolysis being carried out at from 120.degree. to 170.degree. C. and from 3 to 5 bar in the presence of from 1.5 to 3 mol of an alkali metal hyroxide, based on 1 mol of acylated aminoformazan.
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