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US 10,588,830 B2Granted
Dental composition
AssigneeDENTSPLY SIRONA Inc.
InventorsJoachim E. Klee, Florian Szillat, Maximilian Maier, Helmut Ritter, Jacques Lalevee, Jean Pierre Fouassier, Fabrice Morlet-Savary, Celine Dietlin, Mariem Bouzrati-Zerelli, Christoph P Fik
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Abstract
The present invention relates to a dental composition comprising a specific polymerization initiator system comprising a compound having an acylsilyl- or acylgermanyl-group. The present invention also relates the use of the compound having an acylsilyl- or acylgermanyl group for the preparation of a dental composition.
Claims11
A dental composition comprising
- (a) one or more compounds having at least one polymerizable double bond;
- (b) a polymerization initiator system comprising
- (b1) a compound of the following formula (I):
- X—R (I)
- wherein
- X is a group of the following formula (II):
- wherein
- M is Si or Ge;
- R1 represents a substituted or unsubstituted hydrocarbyl or hydrocarbylcarbonyl group;
- R2 represents a substituted or unsubstituted hydrocarbyl or hydrocarbylcarbonyl group;
- R3 represents a substituted or unsubstituted hydrocarbyl group;
- and
- R (i) has the same meaning as X, whereby the compound of formula (I) may be symmetrical or unsymmetrical;
- or
- (ii) is a group of the following formula (III):
- wherein
- Y represents a single bond, an oxygen atom or a group NR′, wherein R′ represents a substituted or unsubstituted hydrocarbyl group;
- R4 represents a substituted or unsubstituted hydrocarbyl group, a trihydrocarbylsilyl group, a mono(hydrocarbylcarbonyl)dihydrocarbylsilyl group or a di(hydrocarbylcarbonyl)monohydrocarbylsilyl group;
- or
- (iii) when M is Si, R may be a substituted or unsubstituted hydrocarbyl group.
17 more elements
Dependencies are inferred from the claim text.