发明授权
- 专利标题: Process for the preparation of chromic acid
- 专利标题(中): 制备色素的方法
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申请号: US663031申请日: 1991-02-25
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公开(公告)号: US5071522A公开(公告)日: 1991-12-10
- 发明人: Helmut Klotz , Hans D. Pinter , Rainer Weber , Hans-Dieter Block , Norbert Lonhoff
- 申请人: Helmut Klotz , Hans D. Pinter , Rainer Weber , Hans-Dieter Block , Norbert Lonhoff
- 申请人地址: DEX Leverkusen
- 专利权人: Bayer Aktiengesellschaft
- 当前专利权人: Bayer Aktiengesellschaft
- 当前专利权人地址: DEX Leverkusen
- 优先权: DEX3829125 19880827
- 主分类号: C01G37/14
- IPC分类号: C01G37/14 ; C25B1/14 ; C25B1/22
摘要:
A process for the preparation of chromic acid by the electrolysis of dichromate and/or monochromate solutions in electrolytic cells in which the anode chamber and the cathode chamber are separated by a cation exchanger membrane, the improvement wherein the chromic acid content of the solution in the anode chamber is periodically increased above that of a continuous operating state.
公开/授权文献
- US5804159A Antiplasma animal model 公开/授权日:1998-09-08
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