Cytec Technology Corporation

Lucy Emeleus

John Campbell

Susan Owens

Ronald Matthys Swart

Methods for extracting metals from aqueous solutions, by contacting an aqueous solution containing a dissolved metal with a solvent extraction composition having a water-immiscible organic solvent; and a metal extractant compound according to Formula (1) 

Phenoxypyrazole composition and process for the solvent extraction of metals

A metal extractant comprising Formula (1) wherein R, R, Rand Reach independently are hydrogen, an optionally substituted hydrocarbyl group, an electron withdrawing group, an electron donating group, or one or more of R& R, R& R, R& Rare linked in such way as to form an optionally substituted ring; Y is N or CRwherein Ris hydrogen, an optionally substituted hydrocarbyl, optionally substituted hydrocarbyloxy, optionally substituted hydrocarbyloxycarbonyl, optionally substituted hydrocarbylcarbonyloxy group, optionally substituted optionally substituted mono or dihydrocarbylaminocarbonyl group; Z is N or CRwherein Ris hydrogen, an optionally substituted hydrocarbyl, optionally substituted hydrocarbyloxy, optionally substituted hydrocarbyloxycarbonyl, optionally substituted hydrocarbylcarbonyloxy group, optionally substituted optionally substituted mono or dihydrocarbylaminocarbonyl group; and tautomers or salts thereof, with the proviso that both Y and Z could be N provided that no more than one of Y or Z is N. 

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Lucy Emeleus