ENCAPSULATED PARTICLE Russian patent published in 2017 - IPC C05G3/00 B01J13/14 B01J13/16 B01J13/22 

FIELD: chemistry.

SUBSTANCE: polyurethane layer is located around the core, and wax is located around the polyurethane layer. The polyurethane layer includes a reaction product of an isocyanate and a polyol component. The polyol component comprises a catalytic polyol derived from an aromatic amine initiator and a polyether polyol, wherein the weight ratio of the catalytic polyol to the polyether polyol in the polyol component is from 1:2 to 10:1. The method for encapsulating the core includes the steps of providing a core, an isocyanate, a polyol component, and wax. The method also includes the steps of mixing and carrying out the reaction of the isocyanate and the polyol component to form a polyurethane, encapsulating the core with a polyurethane layer that contains polyurethane, and encapsulating the polyurethane layer with wax.

EFFECT: providing encapsulated particles characterized by a controlled release property that is not agglomerated and is robust from wear test results.

23 cl,1 tbl, 1 ex