Patent ID: 7595352

Claim:
A photo-curable adhesive composition, comprising: an oligourethane (meth)acrylate in a range of about 11 to about 23% by weight; a reactive monomer-diluent in a range of about 11 to about 24% by weight; a silicate filler in a range of about 50 to about 65% by weight; a photoinitiator in a range of about 2.5 to about 5.0% by weight; an organic peroxide in a range of about 0.1 to about 0.5% by weight; a thixotropic agent in a range of about 0.5 to about 3.5% by weight; an antioxidant in a range of about 0.005 to about 0.02% by weight; a silane finishing agent in a range of about 0.1 to about 2.5% by weight; and oxalic acid in a range of about 0.5 to about 1.5% by weight, based on the total weight of the composition, wherein: the oligourethane (meth)acrylate is a mixture of oligooxyalkyleneurethane methacrylate and oligobutadieneurethane methacrylate in a mass ratio in a range of about 1:1 to about 4:1.