摘要:
The invention relates to the preparation and use of novel extracting agents and novel propane diamides for the recovery of actinides and/or lanthanides.These extracting agents are constituted by propane diamides of formula: ##STR1## For example, the extracting agent can be 2-hexyl-N,N'-dimethyl-N,N'-dibutyl-propane diamide or 2-ethoxyethyl-N,N'-dimethyl-N,N'-dibutyl-propane diamide.They are more particularly used for the recovery of actinides and/or lanthanides present in the trivalent state in an acid aqueous solution, particularly in a nitric solution.
摘要:
The invention relates to non ionic fluorinated compounds having the formula R.sub.F C hd 2H.sub.4 S(R)H, wherein R designates a C.sub.2 H.sub.4 X unit with X=O or S, or a chain exclusively comprising several such units, and two consecutive units can be identical or different, and R.sub.F is a perfluorinated alkyl group exclusive of compounds having the formula:R.sub.F C.sub.2 H.sub.4 SC.sub.2 H.sub.4 OH, R.sub.F C.sub.2 H.sub.4 S(C.sub.2 H.sub.4 O).sub.2 H and R.sub.F (C.sub.2 H.sub.4 S).sub.2 Hand the mixtures of such compounds, in particular, the mixtures of the above defined products differing from one another by the length of their perfluorinated chain, but having the hydrophilic portion of the molecule identical from one product to the other.To obtain them, a compound having the formula R.sub.F C.sub.2 H.sub.4 SH is reacted on an ethylene or polyethylene glycol monochlorohydrin; the alcohol function of the resulting product is also converted to thiol function and then the so obtained product is reacted on such a monochlorohydrin and the resulting alcohol function is again transformed to thiol function, and so on, up to obtaining the desired number of C.sub.2 H.sub.4 O and/or C.sub.2 H.sub.4 S groups.Application as non ionic surfactant agent.
摘要翻译:本发明涉及具有式H d 2H 4 S H的非离子氟化化合物,其中R表示具有X = O或S的C2H4X单元,或仅包含若干这样的单元的链,并且两个连续的单元可以相同或不同 ,RF是全氟化烷基,不包括具有下式的化合物:RFC2H4SC2H4OH,RFC2H4S(C2H4O)2H和RF(C2H4S)2H,以及这些化合物的混合物,特别是上述定义产物的混合物彼此之间彼此不同 其全氟链的长度,但分子的亲水部分与一种产物相同。 为了获得它们,具有式RFC2H4SH的化合物在乙烯或聚乙二醇单氯醇上反应; 所得产物的醇官能团也转化为硫醇官能团,然后使所得产物在这样的一氯代醇上反应,并将所得到的醇官能团再次转化为硫醇官能团,等等,直到获得所需数量的C 2 H 4 O和 /或C2H4S组。 作为非离子表面活性剂的应用。
摘要:
The invention relates to novel extracting agents and novel propane diamides, their use for the recovery of actinides and/or lanthanides and their preparation process. These extracting agents are constituted by propane diamides of formula: ##STR1## For example, the extracting agent can be 2-hexyl-N,N'-dimethyl-N,N'-dibutyl-propane diamide or 2-ethoxyethyl-N,N'-dimethyl-N,N'-dibutyl-propane diamide. They are more particularly used for the recovery of actinides and/or lanthanides present in the trivalent state in an acid aqueous solution, particularly in a nitric solution.
摘要:
These materials having the appearance and the consistency of gels are characterized in that they contain a very high proportion of water, of the order of from 60 to 98% weight, and that their structure is a microcellular compartmentalized structure having a very high density of water droplets enclosed in a fine surfactant membrane and contained in a continuous oil/surfactant phase, this structure being impermeable to water and permeable to hydrophobic compounds soluble in fluorocarbons.Use in the field of optics, fillers, cosmetics, pharmacology, lubricants, textiles, photochemistry and electrodynamics.