A hydrolytic condensation coating composition includes a silane, an epoxy resin,
a hydrolytic condensation catalyst, and a solvent. The weight ratio of the epoxy
resin to the silane is 1:0.46. The silane is reactable with the epoxy resin,
and is hydrolyzable in the presence of the hydrolytic condensation catalyst to
form a three-dimensional stereo-network structure. A hard coat film obtained by
coating a plastic substrate with the coating composition, followed by thermo-curing,
exhibits high transparency and hardness, and has excellent anti-scratch and chemical-resistant
properties. The hard coat film is suitable for use as a surface protective film
for displays, polarizers, touch panels, ITO conductive films, other optical elements,
and the like.