CROSS-LINKED POLYMER PRODUCTION METHOD Russian patent published in 2003 - IPC

FIELD: polymer production. SUBSTANCE: method involves suspending cross-linked styrene-based drop polymer as a seed in continuous, preferably aqueous, phase, adding, to thus obtained suspension, one or several mixtures containing ethylenically unsaturated monomer or its mixture with other monomers, cross-linking agent, if necessary polymerization initiator and other additives, after which seed is swelled and polymerized at elevated temperature. Functionalization of resulting toluene-based cross- linked polymers gives ionites. EFFECT: prevented agglomeration of material and wide distribution of particle size of polymers. 5 cl, 11 ex