| abstract |
PROBLEM TO BE SOLVED: To provide an optical coating composition having both high transparency, high refractive index and high hardness and capable of curing at a relatively low temperature. A silsesquioxane (A) 100 having a weight average molecular weight of 1500 to 20000 having a reactive functional group such as an epoxy group, a 3,4-epoxycyclohexyl group, an oxetanyl group, a vinyl group, or a (meth) acryloyl group. An optical coating composition comprising 40 to 200 parts by weight of at least one particulate metal oxide (B) selected from the group consisting of zirconium oxide, titanium oxide and zinc oxide based on parts by weight. [Selection figure] None |