METHOD OF OBTAINING SELECTIVE SORPTION AND ION-EXCHANGE MATERIALS Russian patent published in 2008 - IPC B01J45/00 C08F8/40 C08H1/02 C25B9/10 C02F1/42 C08J5/20 

FIELD: metallurgy.

SUBSTANCE: said utility invention relates to the field of ion exchange with complexing and chelation, and may be used in the hydrometallurgy of non-ferrous, rare, and noble metals, in water treatment and water purification processes, the chemical industry, and for obtaining high purity substances. The method of obtaining selective sorption and ion-exchange materials includes treatment of amine-containing raw materials with formaldehyde and hypophosphorous acid. As the amine-containing raw materials, a product of enzymatic hydrolysis of natural proteins is used, i.e. peptides with a molecular weight of 700-1000 g/mol, and individual amino acids in the form of a 15-25% water solution. The synthesis process is carried out at 60-70°C.

EFFECT: simplification of technology; increased selectivity of synthesised products to required metal ions.

2 cl, 3 ex