METHOD OF PRODUCING MICROCAPSULES OF HETEROCYCLIC COMPOUNDS OF TRIAZINE SERIES Russian patent published in 2015 - IPC A61K31/53 A61K47/32 A61K9/50 A61J3/07 B01J13/02 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing metribuzin microcapsules. Said method is characterised by that polyvinyl alcohol solution is mixed with metribuzin and an E472c preparation as an emulsifier; the obtained mixture is stirred until components of the reaction mixture dissolve and after formation of a transparent solution, ethyl acetate is slowly added in droplets as a first precipitant and then isopropanol as a second precipitant; the obtained microcapsule suspension is settled for 1 minute and then filtered, washed with isopropanol and dried.

EFFECT: invention provides a simple process of producing microcapsules with a water-soluble envelope and increases mass output.

3 ex