Dental adhesive comprising a homogeneous mixture of an unsaturated monomer a coupling agent a crosslinking agent and a photoinitiator

A homogeneous liquid stable single-package system that can be stored in and used from a single container comprising a stable solution consisting essentially of a homogeneous mixture of the following components:

• a) an ethylenically unsaturated functional monomer selected from the group consisting of 2-hydroxyethyl-methacrylate and 2,3-dihydoxypropyl-methacrylate;
• b) a coupling agent selected from the group consisting of an alkali metal salt of (i) N-phenylgylcine, (ii) the adduct of N-(p-tolyl)glycine and glycidyl-methacrylate, and (iii) the adduct f N-phenylgylcine and glycidyl methacrylate;
• c) a crosslinker selected from the group consisting of 2,2-bis(4-methacryloxy 2-ethoxyphenyl) propane, diethyleneglycol bismethacrylate, the alkali metal salt of 4,4'-bis (4-methacryloxy-2-ethoxy 3-carboxy) biphenyl, the alkali metal salts of the reaction product of 2-hydroxyethylmethacrylate and pyromellitic anhydride, the alkali metal salt of the reaction product of 2-hydroxyethyl-methacrylate and pyromellitic anhydride, the alkali metal salt of the reaction product of 2-hydroxyethylmethacrylate and 3,3' 4,4,'-bensophenonetetracarboxylic anhydride, and the alkali metal salt of the reaction product of 2-hydroxyethylmethacrylate and trimellitic anhydride, in which the alkali metals utilized to make the crosslinker are one or more members selected from the group consisting of Li, Na, K, Rb and Cs;
• d) a photoinitiator;
• e) a water soluble organic solvent present in the amount of 30 to 70 weight percent based on the weight of the stable homogeneous mixture;
• and
• f) water present in the amount of 5 to 20 weight percent based on the weight of the stable homogeneous mixture.

A stable single-package solution that can be stored in and used from a single container comprising a homogeneous mixture consisting essentially of;

• a) 2-Hydroxyethylmethacrylate
• b) the alkali metal salt of the adduct of N-(p-tolyl) glycine and glycidyl methacrylate;
• c) ethoxylated bisphenol A dimethacrylate;
• d) a photoinitiator;
• and
• e) acetone-water solvent mixture present in the amount of 35 to 75 weight percent based on the weight of the stable homogeneous mixture.