发明名称 |
Process for the preparation of highly purified, dialkyl phosphinic acids |
摘要 |
In a process for the production of dialkylphosphinic acids, especially branched, dialkylphosphinic acids in high purity via the reaction of an alpha olefin with a hypophosphorous acid or a salt thereof, the improvement comprising conducting the reaction in the presence of a stoichiometric excess of the olefin and isolating and purifying the desired dialkylphosphinic acid product by neutralizing the monoalkylphosphinic acid by-product with an aqueous base; removing the aqueous phase in which the neutralized monoalkylphosphinic acid is preferentially solubilized; acidifying the dialkyl product in the organic phase; and isolating the purified product. |
申请公布号 |
ZA200703149(B) |
申请公布日期 |
2008.05.28 |
申请号 |
ZA20070003149 |
申请日期 |
2007.04.17 |
申请人 |
RHODIA INC. |
发明人 |
WO, SHIMING;DE CAMPO, FLORYAN |
分类号 |
C07F |
主分类号 |
C07F |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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