发明授权
- 专利标题： Additive for reducing chromium (VI) to chromium (III) ions
- 专利标题（中）： 用于还原铬（VI）至铬（III）离子的添加剂
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申请号： US12498231申请日： 2009-07-06
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公开(公告)号： US08361221B2公开(公告)日： 2013-01-29
- 发明人: Pierre-Antoine Andreani , Bruno Pellerin , Karen Ayme
- 申请人： Pierre-Antoine Andreani , Bruno Pellerin , Karen Ayme
- 申请人地址： FR
- 专利权人： Chryso
- 当前专利权人： Chryso
- 当前专利权人地址： FR
- 代理机构： Barnes & Thornburg LLP
- 优先权： FR0503855 20050418
- 主分类号： C04B24/04
- IPC分类号： C04B24/04
摘要：
The invention relates to an additive for reducing Cr(VI) ions to Cr(III) ions, comprising a complex of tin(II) and a carboxylic acid or a salt thereof, and to the process for the preparation thereof. It also relates to a process for preparing a material having a low chromium(VI) content. Finally, it relates to the use of said additive for reducing chromium(VI) ions to chromium(III) ions.
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