Patent ID: 11883510
Assignee: DENTSPLY SIRONA INC.
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 6:
7. The dental composition according to claim 2, wherein the polycondensate is obtainable by
(i) hydrolysing the mixture containing
(A) the silica precursor component, and optionally
(B) the one or more compounds selected from compounds of aluminum, zinc, titanium, zirconium, tungsten, ytterbium, hafnium, bismuth, barium, strontium, silver, tantalum, lanthanum, tin, boron, and cerium;

(ii) converting the silica precursor component (A) and the optionally compounds (B) into a particulate oxide having an average particle size of from 1 to 50 nm;
(iii) treating the particulate oxide with the silane treatment agent having one or more covalently bonded tertiary amino groups or tertiary phosphine groups for obtaining the polycondensate displaying multiple covalently bonded tertiary amino groups or tertiary phosphine groups on the surface.