METHOD OF PRODUCING EASILY REGENERATED IONITE Russian patent published in 2013 - IPC B01J41/12 C08F220/44 C08F212/08 C08F220/36 

FIELD: chemistry.

SUBSTANCE: invention relates to methods for synthesis of selective sorbents for extracting gold from solutions and pulp. The method is realised by diethylenetriamine aminolysis of a porous copolymer of acrylonitrile, divinylbenzene and styrene, with weight content of acrylonitrile of 34-45%, divinylbenzene - 12.5-20%, styrene - 20-46% and ethylstyrene 8-14%. The copolymer is synthesised by suspension copolymerisation of a mixture consisting of said monomers, benzoyl peroxide as a polymerisation initiator, a mixture of ammonium chloride solution and hydroxyethyl cellulose as a suspension medium, alkylbenzene as blowing a agent.

EFFECT: invention enables to obtain easily regenerated ionite for sorption of gold from cyanide hydrometallurgical media.

2 cl, 2 tbl, 7 ex