Abstract: Radically polymerizable dental material, which contains at least one compound of Formula I: The material preferably additionally contains a radically polymerizable monomer, an initiator for the radical polymerization and filler. It is characterized by a low polymerization contraction stress.

Abstract: Polymerizable compositions are described which contain, as photoinitiator, at least one acyltin compound according to the general formula (I):

Abstract: The invention relates to dental materials which contain at least one compound of Formula I The materials are characterized by very good mechanical properties after curing.

Abstract: Vinylcyclopropane of general formulae I in which X, Y in each case are O or NH, wherein X and Y cannot have the same meaning, R1 is a linear or branched C1-C8-alkyl radical, which can be interrupted by O, S, an ester group or a urethane group, R2 is a linear or branched C2-C10-alkylene radical, which can be interrupted by O, S, an ester group or a urethane group, R3 is a hydrocarbon radical with 1 to 20 carbon atoms, which additionally can contain one or more N, O or S atoms, and n is 1, 2, 3 or 4, preferably 1 or 2. The vinylcyclopropanes are characterized by a low shrinkage and a high reactivity on radical polymerization and are suitable in particular for the preparation of dental materials.

Abstract: Radically polymerizable dental material, which contains at least one compound of Formula I: and at least one thermolabile radically polymerizable compound and/or at least one photolabile radically polymerizable compound. The materials are characterized by debonding-on-demand properties.

Abstract: Radically polymerizable dental material which contains as initiator for the radical polymerization a combination of a thiourea derivative and a bisacyldialkylgermanium compound.

Abstract: Acidic monomer according to Formula I: in which A is a linear or branched aliphatic C1-C18-hydrocarbon group, which can be interrupted by one or more —O—, —S—, —CO—O—, —O—CO—NH—, —HN—CO—NH— or —CO—NR1—; R1 is H or a C1-C6 alkyl group; X is absent or is a linear or branched aliphatic C1-C10 hydrocarbon group, which can be interrupted by one or more —O—, —S—, —CO—O—, —O—CO—NH—, —HN—CO—NH— or —CO—NR2—; R2 is H or a C1-C6 alkyl group; PG is a radically polymerizable group, preferably vinyl, allyl, CH2?CR3—CO—Y— or R4O—CO—C(?CH2)—CH2—Y—; Y?O or NR5 or is absent; R3 is H or CH3; R4 is H or a C1-C7 alkyl group; R5 is H or a C1-C7 alkyl group; n is 1, 2, 3 or 4; m=1 or 2; p=1, 2 or 3; and q=1, 2 or 3. The monomers are particularly suitable as components of dental material.

Abstract: Radically polymerizable, difunctional phenylene sulfide according to Formula I in which X, Y independently of each other in each case are absent or are O or NR6, R1, R2 independently of each other in each case are H, a linear or branched C1 to C10 alkyl radical, —OR7, —SR8, Cl or Br, R3 is absent or is a C1-C10 alkylene radical which can be interrupted by O or S, R4 is absent or is a C1-C10 alkylene radical which can be interrupted by O or S, wherein R3 and R4 cannot be absent at the same time, R5 is H or a C1-C5 alkyl radical, R6, R7, R8 independently of each other in each case are H or a linear or branched C1 to C10 alkyl radical, a, b, c, d independently of each other in each case are 0 or 1 and e is 1 or 2.

Abstract: Radically polymerizable silane according to the general formula I in which R1 is a linear or branched aliphatic C1-C9-alkyl radical, phenyl or alkylated phenyl radical, R2, R3 independently of each other in each case are absent or are a linear or branched aliphatic C1-C20-alkylene radical, which can be interrupted by S or O atoms, R4, R5, R6 independently of each other in each case are —Cl, —O—CH3, —O—C2H5, —CH3 or —C2H5, X is CH2 or O, Y is absent, or is O or NR?, wherein R? is H or a C1-5-alkyl radical, and Z is absent, or is O, NR?, —CO—O—, —CO—NR?—, —O—CO—O—, —O—CO—NR?—, or —NR?—CO—NR?—, wherein R? is H or a C1-5-alkyl radical and wherein the radicals R2 and R3 cannot be absent at the same time and Z is absent if R2 or R3 is absent, polycondensates based thereon and fillers surface-modified therewith.

Abstract: The invention relates to a radically polymerizable dental material having photochromic properties, which contains at least one compound of formula (I) and optionally radically polymerizable monomers, an initiator for radical polymerization and other components.

Abstract: Radically polymerizable dental material, which contains at least one sulphonic acid ester of Formula 1: in which A is H, CN, an aromatic, cycloaliphatic, linear or branched aliphatic C1-C30-hydrocarbon radical or a combination thereof; X is COO— or —CON(R1)— or is absent; B is an aromatic, cycloaliphatic, linear or branched aliphatic C1-C30-hydrocarbon radical, or a combination thereof; R1 is hydrogen or an aromatic, cycloaliphatic, linear or branched aliphatic C1-C10-hydrocarbon radical; m is an integer from 1 to 6, n is an integer from 1 to 6 and p is an integer from 1 to 6; wherein m and p cannot simultaneously be greater than 1. The compounds of Formula 1 are active as chain transfer agents in radical polymerization.

Abstract: Monomer mixture for the preparation of dental materials, which contains at least one low-volatile monomethacrylate, at least one highly viscous polyfunctional methacrylate and at least one low-viscosity polyfunctional methacrylate.

Abstract: Dental material which contains (a) at least one mono- or multifunctional radically polymerizable monomer, (b) at least one organic halogen compound as initiator for the radical polymerization, (c) at least one transition metal compound as catalyst and (d) at least one reducing agent. The material is characterized by a high storage stability at room temperature and does not have the disadvantages associated with peroxides.

Abstract: Acyl germanium compound according to general formula [RmAr—(C?O)—]4—Ge and process for the preparation thereof. The compound is suitable as initiator for radical polymerization.

Abstract: The invention relates to a polymerizable composition which comprises a thermolabile polymerizable compound of Formula I: A-[X-(T-X-Sp-X)p-T-X-Q-(Z)n]m?? Formula I, wherein T represents a thermolabile Diels-Alder or hetero-Diels-Alder group of the Formula The invention also relates to the use of the polymerizable composition according to the present invention and the compounds of Formula I according to the present invention as polymerization resin or for the preparation of polymerization resins and polymerizates such as adhesives, composites, stereolithographic materials, shaped parts, duromers and mounting and fixing elements, and as dental material and for the preparation of dental materials such as adhesives, cements and filling composites.

Abstract: The invention relates to the use of sulfonic acid esters of the following Formula 1 and/or Formula 2, individually or as a mixture of more than one thereof, as regulators in polymerization reactions of radically polymerizable, ethylenically unsaturated monomers: wherein A in each case independently is selected from H, CN, linear, branched or cyclic aliphatic or aromatic C1-C30 hydrocarbon residues; X in each case independently is —COO— or —CON(R1)—, wherein the binding to A occurs via O or N, or is absent if A is an aromatic hydrocarbon residue or CN; B in each case independently is selected from linear, branched or cyclic aliphatic or aromatic C1-C30 hydrocarbon residues; R1 in each case independently is selected from hydrogen and linear, branched or cyclic aliphatic or aromatic C1-C10 hydrocarbon residues, which are optionally substituted with one or more OH groups, wherein the aliphatic hydrocarbon residues are optionally interrupted by one or more oxygen atoms; and n in each case independently is an

Abstract: The invention relates to dental materials which contain at least one compound of Formula I The materials are characterized by very good mechanical properties after curing.

Abstract: Dental material which contains at least one vinylcyclopropane of the general formulae I, in which A, B independently of each other are in each case OH or COOH; X, Y independently of each other are in each case O or NH; R1, R2 independently of each other are in each case H or an aliphatic linear or branched C1-C10 hydrocarbon radical which can be interrupted by O, S or an ester group; and n, m independently of each other are in each case 0, 1 or 2, wherein, if X=Y=O, R1?H and R2?H, n+m?1. The vinylcyclopropanes are characterized by a low shrinkage and a high reactivity on radical polymerization and are suitable in particular for the preparation of dental materials.

Abstract: Dental material, which contains an ene compound with two or more C—C multiple bonds and a thiol according to general Formula (1) or an oligomer based on such a thiol, wherein n, p and m are chosen such that the thiol has a total of at least 3 SH groups.

Abstract: Dental material which contains a urea derivative according to general formula I, in which R1 and R2 are in each case independently of each other an aliphatic C1-C15 radical which can be interrupted by —O—, —S—, —CO—O—; X is a radically polymerizable group; Y is a radically polymerizable group or an acid group; n, m are in each case independently of each other 1, 2, or 3.