Patent ID: 8029613

Claim:
A one-pack dental adhesive composition comprising: (a) a silane coupling agent, (b) a weak acidic compound, which is organic acid, and has an acid dissociation exponent pKa of 3 or more in the form of an aqueous solution, (c) a strong acidic compound which is H 3 PO 4 and has an acid disassociation exponent pKa of less than 3, (d) water and (e) a volatile organic solvent, at a ratio by weight of (a):(b):(c):(d):(e)=1.0 to 40.0 parts by weight: 0.01 to 0.4 part by weight: 0.01 to 0.4 part by weight: 0.1-5.0 parts by weight: 20.0 to 99.0 parts by weight, wherein the silane coupling agent is in admixture with the organic acid, the H 3 PO 4 , the water and the volatile organic solvent.