US 12,083,194 B2
Dental materials based on polymerizable thiourea derivatives
Norbert Moszner, Triesen (LI); Yohann Catel, Sevelen (CH); Iris Lamparth, Grabs (CH); and Jörg Angermann, Sargans (CH)
Assigned to Ivoclar Vivadent AG, Schaan (LI)
Filed by Ivoclar Vivadent AG, Schaan (LI)
Filed on Feb. 1, 2022, as Appl. No. 17/590,421.
Claims priority of application No. 21155529 (EP), filed on Feb. 5, 2021.
Prior Publication US 2022/0257474 A1, Aug. 18, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61K 6/61 (2020.01); A61K 6/887 (2020.01)
CPC A61K 6/61 (2020.01) [A61K 6/887 (2020.01)] 20 Claims
 
1. A radically polymerizable dental material, which comprises a combination of a thiourea derivative and a hydroperoxide as initiator system for the radical polymerization, characterized in that it comprises a thiourea derivative according to the following Formula (I):

OG Complex Work Unit Chemistry
in which the variables have the following meanings:
R is absent or an (n+1)-valent, aromatic, aliphatic, linear or branched C1-C50 hydrocarbon radical, which can be interrupted by one or more, ether, thioether, ester, amide or urethane groups,
PG a radically polymerizable (meth)acrylate, (meth)acrylamide or vinyl group and
n is 1, 2 or 3.