METHOD FOR SYNTHESIS OF POROUS WEAKLY BASIC ANIONITES Russian patent published in 2010 - IPC C08F220/44 C08F212/36 

FIELD: chemistry.

SUBSTANCE: proposed is a method for synthesis of porous weakly-basic anionites through copolymerisation of acrylonitrile and divinylbenzene in the presence of blowing agents and a benzoperoxide polymerisation initiator, with subsequent aminolysis of the copolymers with polyamines with an elementa-y sulphur catalyst, where acrylonitrile and divinylbenzene are copolymerised at pressure 1.2-2.7 atm with addition into the polymerisation mixture of unsaturated compounds selected from a group comprising acrylic esters, styrene, methyl- and ethylstyrene, with content of acrylonitrile not less than 67.5 mol %, divinybenzene 8-20 % and molar ratio of acrylonitrile to the rest of the unsaturated components not greater than 2.5:1, and aminolysis is carried out with triethylene tetramine and diethylene triamine in the presence of 0.1-0.5 % elementary sulphur.

EFFECT: improved method.

1 cl, 4 ex, 1 tbl