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

Claim 0:
1. A dental composition comprising
(a) a compound having a polymerizable double bond,
(b) a photoinitiator system comprising
(b1) a photosensitizer absorbing light in the range of from 400 to 800 nm, and
(b2) a particulate carrier supporting a coinitiator covalently bonded to the surface of the carrier, wherein the particulate carrier displays multiple covalently bonded tertiary amino groups and/or tertiary phosphine groups on the surface, for crosslinking monomers, oligomers and/or polymers having one or more polymerizable double bonds, wherein the particulate carrier is a polycondensate of a particulate oxide treated with a silane treatment agent having the multiple covalently bonded tertiary amino groups and/or tertiary phosphine groups, the particulate oxide being formed from a mixture of a silica precursor component and optionally 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, the particulate oxide having an average particle size of from 1 to 50 nm.