Claims
- 1. An ion-releasing composite material on the basis of polymerizable monomers, comprising a mixture of(a) 1 to 40 wt % of at least one non-acid, non-ionic, unsaturated, hydrophilic crosslinker monomer capable of hydrophilic interaction with a filler, (b) 2 to 40 wt % of at least one non-acid, non-ionic, hydrophilic dilution monomer having a viscosity of ≦1 Pas and (c) 30 to 94 wt % of at least one ion-releasing filler, wherein the composite material has improved ion releasing capacity as compared to a composite material formulated with a hydrophobic dilution monomer.
- 2. A composite material according to claim 1, wherein the composite material further comprises:(d) 0.01 to 5 wt.-% of a radical initiator.
- 3. A composite material according to claim 2, wherein the composite material comprises:(a) 10 to 30 wt.-% of one or more crosslinker monomers; (b) 2 to 30 wt.-% of one or more dilution monomers; and/or (c) 0.1 to 2.0 wt.-% initiator.
- 4. A composite material according to claim 3, wherein the composite material comprises:(a) 15 to 25 wt.-% of one or more crosslinker monomers; and/or (b) 5 to 20 wt.-% of one or more dilution monomers.
- 5. A composite material according to claim 1, wherein the composite material further comprises 30 to 60 wt.-% (cement) or 60 to 64 wt.-% (filling composite) filler.
- 6. A composite material according to claim 1, wherein the crosslinker and/or dilution monomer or monomers contain urethane and/or OH groups.
- 7. A composite material according to claim 6, wherein the composite material comprises as the crosslinker monomer 2,2-bis-4-(3-methacryloxy-2-hydroxypropyl)-phenylpropane)(bis-GMA), 7,7,9-trimethyl-4,13-dioxo-3,14-dioxa-5,12-diazahexa-decan-1,16-diyl-dimethacrylate (UDMA), a reaction product of glycidyl methacrylate with a bisphenol and/or a reaction product of 2 moles of 2-hydroxyethyl methacrylate (HEMA) or 2 moles of 2-hydroxypropyl(meth)acrylate with 1 mole of diisocyanate.
- 8. A composite material according to claim 1, wherein the composite material comprises as the dilution monomer glycerol dimethacrylate (GDMA), a reaction product of low-viscosity di- and triepoxides with (meth)acrylic acid and/or a reaction product of 2 or 3 moles of methacrylic acid with glycerol triglycidyl ether or trimethylol-propane triglycidyl ether.
- 9. A composite material according to claim 1, wherein the crosslinker and/or dilution monomer contains methacryl and/or acryl groups as groups capable of polymerization.
- 10. A composite material according to claim 1, wherein the composite material comprises as the initiator azobis-(isobutyronitrile), azobis(4-cyanovaleric acid), dibenzoyl peroxide, dilauroyl peroxide, tert.-butyl peroctoate, tert.-butyl perbenzoate, di-(tert.-butyl)-peroxide, benzpinacol, a 2,2′-di(C1-C8-alkyl)benzpinacol, a benzoin ether, a dialkyl benzil ketal, dialkoxyaceto-phenone, acylphosphinic oxide, 9,10-phenanthrenequinone, diacetyl, fuiril, anisil, 4,4′-dichlorobenzil, 4,4′-dialkoxybenzil and/or camphor quinone.
- 11. A composite material according to claim 1, wherein the composite material comprises as the ion-releasing filler a filler releasing Ca2+, F− and/or OH− ions.
- 12. A composite material according to claim 11, wherein the composite material comprises as the filler a glass powder of a fluoro-aluminium silicate glass having an average particle size of 0.05 to 15 μm.
- 13. A composite material according to claim 1, wherein the composite material further comprises an alkaline filler.
- 14. A composite material according to claim 13, wherein the composite material comprises as the filler calcium hydroxide, calcium oxide and/or a calcium hydroxide-releading glass powder.
- 15. A composite material according to claim 14, wherein the composite material comprises a glass powder having a CaO content of at least 20 wt.-%.
- 16. A composite material according to claim 15, wherein the glass powder contains 24.0 to 56.0 wt.-% SiO2, 26.0 to 57.0 wt.-% CaO and 4.0 to 14.0 wt.-% F.
Priority Claims (1)
Number |
Date |
Country |
Kind |
197 57 647 |
Dec 1997 |
DE |
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Parent Case Info
This application claims priority benefit of U.S. patent application Ser. No. 60/094,019, filed on Jul. 24, 1998, which is hereby incorporated by reference.
US Referenced Citations (4)
Foreign Referenced Citations (3)
Number |
Date |
Country |
44 45 266 A1 |
Jun 1996 |
DE |
0 382 033 A2 |
Aug 1990 |
EP |
0 449 399 A2 |
Oct 1991 |
EP |
Provisional Applications (1)
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Number |
Date |
Country |
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60/094019 |
Jul 1998 |
US |