INCAPSULATED PARTICLE Russian patent published in 2010 - IPC C05G3/00 C05G5/00 B01J13/00 

FIELD: chemistry.

SUBSTANCE: invention relates to incapsulated particle which includes core. Core contains fertiliser, selected from group of nitrogen, phosphate, potassium, sulphur fertilisers and their combination and can also include herbicides, insecticides and fungicides. Incapsulated particle also contains polyurethane layer, located around core. Polyurethane layer includes product of reaction of aromatic isocyanate component and polyol, which is reaction-able with respect to aromatic isocyanate component. Aromatic isocyanate component includes methyl diphenyl diisocyanate, toluol diisocyanate and their mixtures. Polyol, which is reaction-able with respect to aromatic isocyanate component, is formed from initiator based on aromatic amine and includes toluol-diamine. Aromatic isocyanate component and polyol mix completely, forming in such way, polyurethane layer without defects, which prevents water penetration through polyurethane layer and dissolution of core, which prevents phytotoxicity.

EFFECT: application of incapsulated particle allows to obtain slow controlled dissolution of core in soil without application of additional layers above polyurethane layer.

15 cl, 2 tbl, 3 ex