申请人:CYANAMID CANADA INC.
公开号:EP0132700A1
公开(公告)日:1985-02-13
A process for the removal of difficult-to-remove acidic organic compounds from aqueous solutions using novel phosphine oxide mixtures in which mixtures 1) at least two phosphine oxides are present, the total number of carbon atoms in a first oxide being at least 15 and the difference in the total number of carbon atoms in the first and second oxides being present in an amount of at least 5% by weight and not more than 60% by weight or 2) at least four phosphine oxides are present, the total number of carbon atoms in an oxide having the lowest no. of C atoms being at least 15, said phosphine oxides being present in an amount of at least 1% by weight and not more than 60% by weight. Unexpectedly high extractability is achieved using the mixtures.
一种使用新型氧化膦混合物从水溶液中去除难以去除的酸性有机化合物的工艺,其中的混合物 1) 至少含有两种氧化膦,第一种氧化物中的碳原子总数至少为 15,第一种和第二种氧化物中的碳原子总数之差至少为 5%(按重量计),且不超过 60%(按重量计);或 2) 至少含有四种氧化膦,具有最少 C 原子数的氧化物中的碳原子总数至少为 15,所述氧化膦的含量至少为 1%(按重量计),且不超过 60%(按重量计)。C 原子数最少的氧化物中的碳原子总数至少为 15 个,所述膦氧化物的含量至少为 1%(按重量计),不超过 60%(按重量计)。使用这些混合物可以获得意想不到的高萃取率。