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US 11,357,709 B2Granted
Dental materials based on redox systems with low-odour cumene hydroperoxide derivatives
AssigneeIvoclar Vivadent AG
InventorsNorbert Moszner, Thomas Köhler, Johannes Schädlich, Jörg Angermann
Life of this patent
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Abstract
Radically polymerizable dental material, which contains a combination of a thiourea derivative and a hydroperoxide according to the following Formula (I) as initiator system for the radical polymerization:
Claims24
Radically polymerizable dental material comprising
- a combination of a thiourea derivative and a hydroperoxide as an initiator system for the radical polymerization, characterized in that it contains a hydroperoxide according to the following Formula (I),
- in which the variables have the following meanings:
- Q1 an n-valent, aromatic, aliphatic, linear or branched C1-C14 hydrocarbon radical, which can be interrupted by one or more S and/or O atoms and which can be unsubstituted or substituted by one or more substituents,
- X, Y independently of each other are in each case absent, —O—, —COO—;
- —CONR2—, or —O—CO—NR3—, wherein R2 and R3 independently of each other represent H or a C1-C5 alkyl radical,
- Q2 is absent with, an aliphatic, linear or branched C1-C14 alkylene radical, which can be interrupted by S and/or O atoms and which can be unsubstituted or substituted by —OH, —OR4, —Cl and/or —Br, wherein R4 is an aliphatic, linear or branched C1-C10 hydrocarbon radical,
- Q3 a C1-C3 alkylene group or is absent,
- wherein X and/or Y is absent if Q2 is absent,
- n 1, 2, 3 or 4, and wherein
- the substitution on the aromatic compound takes place in position 2, 3 or 4.
7 more elements
Dental material according to one of the preceding claims, which contains
- (a) 0.05 to 8.0 wt.-% hydroperoxide of Formula (I),
- (b) 0.003 to 4.0 wt.-% thiourea and/or thiourea derivative,
- (c) 10 to 95 wt.-% radically polymerizable monomer,
- (d) 0 to 85 wt.-% filler, and
- (e) 0.1 to 3 wt.-% additive,
- in each case relative to the total mass of the material.
3 more elements
Dental material according to one of the preceding claims, which contains
- (a) 0.1 to 3.0 wt.-% hydroperoxide of Formula (I),
- (b) 0.005 to 3.0 wt.-% thiourea and/or thiourea derivative,
- (c) 10 to 90 wt.-% radically polymerizable monomer,
- (d) 0 to 85 wt.-% filler, and
- (e) 0.1 to 2 wt.-% additive,
- in each case relative to the total mass of the material.
3 more elements
Dependencies are inferred from the claim text.