C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 9/30 (2006.01) C07F 9/50 (2006.01)
Patent
CA 2550557
The present invention provides phosphinic acids and their sulfur derivatives, in accordance with the following formula (I): (see formula I) wherein R1 and R2 are different and each of R1 and R2 is independently selected from an organic radical that branches at the alpha carbon and an organic radical that branches at the beta carbon, and each of X and Y is independently O or S, and wherein said compound is a liquid at room temperature. Compounds of formula (I) find utility for example as metal extractants. Also provided are methods for making compounds of formula (I) and their corresponding phosphine intermediates.
La présente invention permet d'obtenir des acides phosphiniques et leurs dérivés sulfurés, conformément à la formule suivante (I) : (voir la formule I), où R1 et R2 sont différents l'un de l'autre, et R1 et R2 sont choisis, indépendamment l'un de l'autre, parmi des radicaux organiques rattachés au carbone alpha et des radicaux organiques rattachés au carbone bêta, et où X et Y sont, indépendamment l'un de l'autre, un O ou un S, le composé en question étant liquide à température ambiante. Les composés de formule (I) peuvent par exemple être utilisés comme extracteurs de métaux. On présente également des méthodes permettant de fabriquer des composés de formule (I) et leurs intermédiaires phosphines correspondants.
Bourget Cyril Christian Henri
Dyck Jeffrey Charles Henry
Jakovljevic Boban
Nucciarone Donato
Robertson Allan James
Cytec Canada Inc.
Smart & Biggar
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