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US 5,334,625 AGranted
Restorative dental adhesive composition
AssigneeDen-Mat Corporation
InventorsRobert L. Ibsen, Donald R. Pacropis, William R. Glace
Life of this patent
Estimating the term…
Abstract
An adhesive composition useful for restoration comprising a finely-divided reinforcing filler, a polymerizable matrix material, a bonding agent, a coupling agent, and a thermal initiator.
Claims8
An adhesive composition useful for dental restoration consisting essentially of:
- (a) a finely-divided, from about 0.005 to about 500 microns, reinforcing filler;
- (b) a methacrylate-functional resin;
- (c) a bonding agent selected from the group consisting of (i) N-phenylglycin, the alkali metal salt thereof, or the mixture of the foregoing two compounds, (ii) the adduct of N(P-tolyl) glycine and glycidyl methacrylate, the alkali metal salt thereof, or the mixture of the foregoing two compounds, (iii) the adduct of N-phenylglycine and glycidyl, the adduct of bisphenol A and glycidyl methacrylate, the alkali metal salt thereof, or the mixture of the foregoing two compounds, and N-(p-tolyl) glycine;
- (d) a coupling agent selected from the group consisting of (i) the adduct of pyromellitic acid dianhydride and 2-hydroxyethylmethacrylate, (ii) the adduct of 3,3'4,4'-benzophenonetetracarboxylic dianhydride and 2-hydroxyethyl methacrylate, and (iii) 4-methacryloxyethyltrimellitic;
- and
- (e) a thermal initiator.
3 more elements
Dependencies are inferred from the claim text.