Patent ID: 8716386

Claim:
A method for producing polymeric balls doped with at least one metal element, comprising: a) forming polymeric balls by polymerization, in an organic phase comprising a polymerization initiator, of at least one ethylenic monomer comprising at least one chelating ligand of at least one metal element; and b) putting said polymeric balls in contact with a solution comprising at least one metal element, wherein said a) is applied with the succession of the following operations: forming liquid balls by encapsulation of a first aqueous phase W 1 in an organic phase, this organic phase comprising at least one ethylenic monomer comprising at least one chelating ligand of at least one metal element and at least one polymerization initiator; emulsifying in a second aqueous phase W 2 the thereby formed balls; and polymerizing the constitutive monomer(s) of the organic phase, by means of which polymeric balls are obtained.