ABRASIVE GRAINS MODIFIED WITH HYDROPHILIC AND HYDROPHOBIC SILANE, AND METHOD FOR THEIR OBTAINING Russian patent published in 2012 - IPC B24D3/20 B24D11/02 

FIELD: machine building.

SUBSTANCE: abrasive grain includes abrasive grain as substrate and film on the grain, which includes relatively hydrophilic silane component and relatively hydrophobic silane component. Film can be represented with a separate layer of film or multiple layers of film, where the film layer that is the most closest one to abrasive grain has mainly hydrophilic silane component, and film layer that is the farthest one from abrasive grain mainly includes relatively hydrophobic silane component. Abrasive items with coating and abrasive items with binding agent include surface modified abrasive grains.

EFFECT: increasing the service life of abrasive items.

15 cl, 6 dwg, 5 tbl