C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 3/38 (2006.01) C22B 3/32 (2006.01)
Patent
CA 2261626
Hydrocarbon-soluble aminomethylenephosphonic acid derivatives comprising the structural element of formula (I), where R1 and R2 are hydrogen or organic radicals, can be used for the solvent extraction of metal ions from aqueous solutions.
L'invention concerne des dérivés d'acide aminométhylènephosphonique solubles dans des hydrocarbures et présentant la formule (I). Dans cette dernière, R?1¿ et R?2¿ représentent de l'hydrogène ou des radicaux organiques. Ces dérivés peuvent être utilisés pour extraire à l'aide de solvants des ions métalliques à partir de solutions aqueuses.
Delmas Francisco
Ehle Michael
Nogueira Carlos
Oppenlander Knut
Basf Aktiengesellschaft
Borden Ladner Gervais Llp
Instituto National de Engenharia E. Tecnologia
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