| abstract |
Provided is a coating composition which can form, on the surface of a plastic lens base, a transparent coating layer with high hardness and excellent mar resistance, namely, a hard coat layer. Even when in contact with warm water, a transparent coating layer formed using the coating composition exhibits excellent tight adhesion to the lens base.nA coating composition for the formation of a hard coat layer, characterized by containing, with respect to 100 parts by mass of (A) fine particles of an inorganic oxide such as silica or antimony pentaoxide, 50 to 350 parts by mass of (B1) an epoxy-containing silicon compound that bears both an epoxy group and a hydrolyzable group (such as γ-glycidoxypropyltrimethoxysilane) and 0.1 to 10 parts by mass of (C) a compound having a ketimine group (such as 3-triethoxysilyl-N-(1,3-dimethyl-butylidene)propylamine); and an optical article which is laminated with a cured layer of the coating composition on the surface. |