METHOD OF PRODUCING POROUS MICROPARTICLES OF ESPECIALLY PURE POLYSTYRENE AS CARRIERS OF BIOLOGICALLY ACTIVE FORMS OF PROLONGED ACTION Russian patent published in 2013 - IPC C08J9/08 C08F112/08 

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing polystyrene. Described is a method of producing porous microparticles of especially pure polystyrene as a carrier of biologically active forms of prolonged action, which involves decompression of a solution through an opening, characterised by that liquid-phase carbon dioxide is mixed with a monomer and is fed under pressure into a tubular reactor for frontal polymerisation, wherein during the reaction conditions are maintained, which correspond the transitioning of the monomer-CO₂ mixture into a supercritical state. The monomer-polymer-carbon dioxide mixture formed while moving through the reactor is sprayed and stored in a tank.

EFFECT: obtaining porous microparticles of especially pure polystyrene.

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