ION EXCHANGE RESIN HAVING CHELATING PROPERTIES, METHOD FOR PREPARING SAME AND USES THEREOF

摘要

The invention relates to an ion exchange resin having chelating properties that is obtained by polycondensation in a base medium: - of at least a first chelating phenol monomer that has the following general formula (I): in which m = 0, 1, 2 or 3; n = 0, 1 or 2; R1, R2, R3, R4, R5 represent H, an -OH, C1 to C10 alkyl or alkoxy, aryl, -SO3H, or -COOR group, where R = H or C1 to C10 alkyl, -P(O)(OR)(OR') or -C(O)NRR' where R and R' = H and/or C1 to C10 alkyl; with the condition that at least one of R1 to R5 = -OH and at least two of R1 to R5 = H; - of at least a second phenol monomer, that does not have the general formula (I); and - of formaldehyde. The invention also relates to a method for preparing this resin and the uses of said resin. Applications: decontamination of caesium and/or strontium in an aqueous medium, in particular in the nuclear industry.