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 |
CA2585291(C) |
申请公布日期 |
2013.09.17 |
申请号 |
CA20052585291 |
申请日期 |
2005.10.25 |
申请人 |
RHODIA INC. |
发明人 |
WO, SHIMING;DE CAMPO, FLORYAN |
分类号 |
C07F9/30;C02F1/54;C02F1/62 |
主分类号 |
C07F9/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|