Ion exchange resins

Details Ion exchange resins Ion exchange resins

C - Chemistry, Metallurgy

08

F

402/340

C08F 212/36 (2006.01) B01J 39/20 (2006.01) C08F 8/34 (2006.01)

Patent

CA 2029961

This invention provides a new ion exchange resin which is characterized by having carbodithioate functionality (i.e. ~~CS2, where ~ represents the resin bead). The present ion exchange resin may be prepared from a suitable non-functionalized resin bead by subjecting it to bromination, lithiation and treatment with carbon disulfide. The carbodithioate functionalized resin of this invention is surprisingly effective for the removal of Group VIII precious metals (e.g. rhodium) from chemical process streams.

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