SILICON OXIDES Russian patent published in 2011 - IPC A61K8/25 A61Q11/00 C01B33/14 

FIELD: medicine, pharmaceutics.

SUBSTANCE: group of inventions refers to deposited amorphous silicon oxides with controlled abrasivity and effective cleaning properties for application in an oral care composition. There are offered amorphous deposited silicon oxide particles with an oil absorption value 85 cm³/100 g or less, an average particle diameter d₅₀ 3 mcm and less and d₉₀ at which 90 wt % of particles have a diameter less than the value d₉₀ 6 mcm or less, with the value d₉₉ at which 99 wt % particles have a diameter less than the value d₉₉ 10 mcm or less and at which a radioactive dentin abrasion value makes less than 150. There is offered a method of grinding amorphous silicon oxide involving fine grinding by jet, countercurrent jet, flat micronisation, or fluidised layer micronisation, and silicon oxide classification for formation of the amorphous deposited silicon oxide particles with the characteristics described above.

EFFECT: what is offered is application of said particles as an abrasive cleaning additive in an oral care composition, the oral care composition and a tooth-paste containing an acceptable carrier and an effective cleaning amount of said particles which clean teeth without surplus dentin or enamels abrasion.

19 cl, 7 tbl, 6 ex