Patent ID: 7285603

Claim:
A coating composition for use on a primer-less optical article comprising: a. a glycidyl- or glycidoxy-functional silane of the formula: wherein R 1 , R 2 , and R 3 are independently selected from group consisting of hydrogen, aliphatic groups and aromatic groups which complete a siloxane on the silicon (Si) atom; n is an integer from 1 to 4, and; EP represents a glycidyl (e.g., glycidoxy) group; b. a tetraalkoxylsilane of the formula: wherein R 1 , R 2 , R 3 and R 4 are independently selected from the group consisting of hydrogen, aliphatic groups and aromatic groups which complete a siloxane on the silicon (Si) atom; and c. a tertiary amine comprising triethanolomine the amount of glycidyl- or glycidoxy-functional silane is from about 30 to 70% by weight of the total coating solid, the level of tetraalkoxysilane is from about 30 to 70% by weight of the total coating solid and the total level of triethanolamine is from about 0.1 to 5% by weight of the total coating solid.