Polyether-based preparations and use thereof
Assignee3M Innovative Properties Company
InventorsThomas Klettke, Bernd Kuppermann, Hendrik M. Grupp
Life of this patent
Estimating the term…
Abstract
The invention relates to preparations based on polymerizable polyether materials and a fluidity improver and to the use thereof in producing dental materials, especially impression materials.
Claims16
A kit for producing dental materials, comprising at least one base component and at least one catalyst component, the base component comprising at least one polymerizable polyether material with a linear backbone having no side chains, a plasticizer, and about 0.1 to about 15% by weight of a fluidity improver, the fluidity improver being a random copolyether of ethyleneoxide and at least one more alkyleneoxide which is not ethylene oxide, the copolymer comprising at least about 50% of structural elements from ethylene oxide, the fluidity improver having preferably a molecular weight Mw in a range of about 100 to about 2000 and the at least one catalyst component comprising a catalyst for the cross-linking of at least part of the polymerizable polyether material, wherein the base component and the catalyst component are present separated from one another.
A method for preparing a dental impression material, said method comprising the steps of
- A) providing a polymerizable polyether material with a linear backbone having no side chains which is selected from the group consisting of
- a) polyethers with at least one aziridino group;
- b) polyethers with at least one olefinically unsaturated group and a compound with at least one SiH group
- c) polyethers with at least one olefinically unsaturated group and at least one SiH group;
- d) polyethers with at least one alkoxysilyl group;
- and
- e) polyethers with at least one olefinically unsaturated group and a metal carbene,
- B) mixing the polymerizable polyether material with a plasticizer and about 0.01 to about 15% by weight of a fluidity improver, the fluidity improver being a random copolyether of ethyleneoxide and at least one more alkyleneoxide which is not ethylene oxide, the copolymer comprising at least about 50% of structural elements from ethylene oxide, the fluidity improver having preferably a molecular weight Mw in a range of about 100 to about 2000.
Dependencies are inferred from the claim text.