Institut National De Recherche Chimique Appliquee

Commissariat a L'energie Atomique

Gerard Thiollet

Louisette Lafosse

Claude Musikas

Aime Cambon

Pierre Hoel

Jean-Jacques Delpuech

Guy Serratrice

Francois Szonyi

Claude Selve

Jean-Pierre Lampin, Deceased

Marie-Jose Stebe

Jean-Claude Ravey

Louis Matos

Sophie Lampin, Heir

Corinne Lampin, Heir

El Mostafa Moumni

Jeannine Robillart Lampin, Heir

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.

Visco-elastic, isotropic materials based on water, fluorinate sufactants

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.

Method for the recovery of actinides and/or lanthanides using novel

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:

Novel non ionic fluorinated compounds, their process of preparation and

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.

Novel extraction agents and novel propane diamides

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Cerny, France

Gerard Thiollet