Heat-sensitive compounds exhibitng a cloud point which can...

Details Heat-sensitive compounds exhibitng a cloud point which can... Heat-sensitive compounds exhibitng a cloud point which can...

2006-03-21

2006-03-21

Zemel, Irina S. (Department: 1711)

Organic compounds -- part of the class 532-570 series

Organic compounds

Fatty compounds having an acid moiety which contains the...

C530S300000, C530S350000, C554S064000, C525S054100

Reexamination Certificate

active

07015340

ABSTRACT:
The invention relates to a heat-sensitive compound having the property of being soluble in water below a critical temperature Tcand insoluble in water above this temperature Tc, this property being thermally reversible, characterized in that it comprises a first amphiphilic and thermally reversible part corresponding to one of the following formulae (I) and (II):in which i is an integer ranging from 1 to 20 and j is an integer ranging from 3 to 30.This compound can be used to extract a chemical entity, such as uranium.

REFERENCES:
patent: 4154674 (1979-05-01), Warshawsky et al.
patent: WO 00/73521 (2000-12-01), None
Bergbreiter, David E. et al,Sequestration of Trace Metals Using Water-Soluble and Fluorous Phase-Soluble Polymers, Angewandte Chemie. International Edition, 2000, pp. 1039-1042, vol. 39, No. 6, Weinheim, Germany.
Grillo, Isabelle,Thesis of the University Paris XI, 1998, p. 175, p. 25, II 16-20.
Hinze, Willie L. et al,A Critical Review of Surfactant-Mediated Phase Separations(Cloud-Point Extractions): Theory and Applications, Critical Reviews in Analytical Chemistry, 1993, pp. 133-177, 24 (2), CRC Press, Inc.
Huibers, Paul D. T. et al,Predicting Surfactant Cloud Point from Molecular Structure, Journal of Colloid and Interface Science, 1997, pp. 132-136, 193, Article No. CS975053, Academic Press.
Kocienski, Philip J.,Protecting Groups, 1994, pp. 83-87, Georg Thieme Verlag Stuttgart, New York.
Philippon, Annie et al,Macrocyclic Ethers By Free Radical Cyclizations, Synthetic Communications, 1997, pp. 2651-2682, 27 (15), Marcel Dekker, Inc.
Popovitz-Biro, R. et al,A New Series of Amphiphilic Molecules Forming Stable Z-Type(Polar)Langmuir-Blodgett Films, J. Amer. Chem. Soc., 1990, pp. 2498-2506, vol. 112, No. 7, American Chemical Society.
Schott, Hans et al,Effect of Inorganic Additives on Solutions of Nonionic Surfactants II, Journal of Pharmaceutical Sciences, Apr. 1975, pp. 658-664, vol. 64, No. 4.
Takeshita, Kenji et al,Extraction of Ianthanide elements by thermosensitive polymer gel copolymerized with acidic phosphorous compound, Solvent Extraction and Ion Exchange, 2000, pp. 375-386, 18 (2), Marcel Dekker, Inc.
Tani, Hirofumi et al,Micelle-mediated extraction, Journal of Chromatography A, 1997, pp. 229-241, 780, Elsevier Science.
Wassermann, Hubert et al,Symmetric Di- or Tetra-alkyl Substituted Monodisperse Polyoxyethyleneglycols: Synthesis and Surface Properties, J. Chem. Soc. Perkin Trans. 2, 1992, pp. 2043-2047.

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