发明授权
US09156866B1 Methods for recovering bis(2,4,4-trimethylpentyl) dithiophosphinic acid
有权
回收双（2,4,4-三甲基戊基）二硫代次膦酸的方法
- 专利标题： Methods for recovering bis(2,4,4-trimethylpentyl) dithiophosphinic acid
- 专利标题（中）： 回收双（2,4,4-三甲基戊基）二硫代次膦酸的方法
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申请号： US14482972申请日： 2014-09-10
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公开(公告)号： US09156866B1公开(公告)日： 2015-10-13
- 发明人: Marc Detournay , Arnaud Jacques De Sainte Marie , Jean-Paul Raymond Duterque , Indje Ognianov Mihaylov
- 申请人： VALE S.A.
- 申请人地址： BR Rio de Janeiro
- 专利权人： VALE S.A.
- 当前专利权人： VALE S.A.
- 当前专利权人地址： BR Rio de Janeiro
- 代理机构： Arent Fox LLP
- 主分类号： C07F9/30
- IPC分类号： C07F9/30
摘要：
This invention provides a method to recover valuable DTPA from DTPA solvent extraction organic solution that avoids the need to operate at either high or very low temperatures, with extended reaction times and having to carry out solid/liquid separation on organic solution. Furthermore, the invention provides the flexibility of selecting appropriate base solution to carry out the DTPA recovery process and further provides the ability to directly treat metal-containing DTPA organic solution.
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