Patent ID: 8022114

Claim:
A dental adhesive comprising: (i) from about 5 to about 70% by weight of polymerizable acids components selected from the group consisting of dipentaerythritol pentaacrylate phosphoric acid ester, 4,4′-oxydiphenylether 1,1′,6,6′-tetracarboxylic acid-1,1′-(2-metharcyloxy)dimethacrylate and mixtures thereof; (ii) from about 1 to about 30% by weight of hydrophilic methacrylate; (iii) from about 1 to about 25% by weight of hydrophilic difunctional (meth)acrylate; (iv) from about 1 to about 30% by weight of hydrophobic difunctional (meth)acrylate; (v) from about 0.1 to about 5% by weight photoinitiators selected from the group consisting of diphenyl (2,4,6-trimethylbenzoyl)phosphine oxide, camphorquinone/dimethylaminobenzonitrile combination and diphenyl (2,4,6-trimethylbenzoyl)phosphine oxide/camphorquinone/4-ethyldimethylaminbenzoate combination; (vi) from about 0.1 to about 5% by weight curing additives selected from the group consisting of aromatic sulfinate salts; (vii) from about 0.1 to about 5% by weight cetylamine hydrofluoride; (viii) from about 0.05 to about 2% stabilizer; (ix) from about 1 to about 40% water; and (x) from about 5 to about 60% water-miscible polar organic solvent selected from the group consisting of acetone and alcohol.