Two-component dental materials having a low setting temperature
View Patent ↗The invention relates to polymerizable materials comprising two components, where component I comprises: (a) from 0.1 to 20% by weight of at least one vinyl ether, (b) from 10 to 89.9% by weight of at least one ethylenically unsaturated monomer which is not a vinyl ether, (c) from 0.001 to 5% by weight of at least one accelerator, (d) from 9.999 to 89.899% by weight of fillers, thixotropy assistants, retardants and other auxiliaries, and component II comprises: (e) from 0.1 to 20% by weight of at least one barbituric acid derivative and/or at least one malonylsulfamide which is able to initiate the free-radical polymerization, and (f) from 0 to 89.9% by weight of fillers, thixotropy assistants, retardants and other auxiliaries, (g) from 10 to 80% by weight of conventional plasticizers, and to the use thereof.
1. A polymerizable material, comprising:
component I, which comprises
a) about 0.1 to about 20% by weight of at least one vinyl ether,
wherein said vinyl ether is selected from the group consisting of polyether vinyl ether, polyacrylate vinyl ether, polyester vinyl ether, polycarbonate vinyl ether, polyimide vinyl ether, polyamide vinyl ether, polyphosphazene vinyl ether, siloxane vinyl ether, and polyurethane vinyl ether
b) about 10 to about 89.9% by weight of at least one ethylenically unsaturated monomer that is not a vinyl ether,
c) about 0.001 to about 5% by weight of at least one accelerator, and
d) about 9.999 to about 89.899% by weight of fillers, thixotropy assistants, and retardants; and
component II, which comprises
e) about 0.1 to about 20% by weight of at least one barbituric acid derivative or at least one malonylsulfamide to initiate the free-radical polymerization,
f) about 0 to about 89.9% by weight of fillers, thixotropy assistants, and retardants, and
g) about 10 to about 80% by weight of plasticizers.
2. The polymerizable material of claim 1 , wherein said at least one vinyl ether includes at least one second vinyl ether selected from the group consisting of alkyl vinyl ethers, aryl vinyl ethers, aryl alkylvinyl ethers, and cycloaliphatic vinyl ethers.
3. The polymerizable material of claim 1 , wherein said at least one vinyl ether has a molecular weight of less than 15,000 g/mol.
4. The polymerizable material of claim 1 , wherein said at least one vinyl ether is in the form of a liquid at room temperature.
5. The polymerizable material of claim 1 , wherein said at least one vinyl ether includes additional functional groups.
6. The polymerizable material of claim 1 , wherein said at least one vinyl ether includes difunctional vinyl ethers.
7. A method of using the polymerizable material of claim 1 as part of a dental procedure.
8. A method of using the polymerizable material of claim 1 as filling material, core build-up material, dental cement, temporary crown and bridge material, material in dental technology, or for the production of inlays, onlays, veneers and model materials.
9. A container containing component I and component II of the polymerizable material of claim 1 .
10. A process of preparing dental materials comprising the polymerizable material of claim 1 , said process comprising:
initiating free-radical polymerization of vinyl ethers in the materials using an initiator system having at least one barbituric acid derivative or malonylsulfonamide,
wherein mechanical values of the materials are increased and maximum setting temperatures are lowered.
11. A cured material formed from the polymerizable material of claim 1 , wherein said cured material comprises a modulus of elasticity in bending of greater than 1500 MPa.