Dental composition comprising a particulate carrier supporting a coinitiator
AssigneeDENTSPLY SIRONA Inc.
InventorsMaximilian Maier, Joachim E. Klee, Christian Scheufler, Caroline Renn, Florian Szillat
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Abstract
The present invention relates to a dental composition comprising a photoinitiator system comprising a particulate carrier supporting a coinitiator covalently bonded to the surface of the carrier. Furthermore, the present invention relates to a use of the particulate carrier in a dental composition. 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.
Claims14
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.
Dependencies are inferred from the claim text.