Patent ID: 7589130

Claim:
A coating composition containing a coating agent having an ionizing radiation-curable compound as a principal component thereof and a solvent, the coating composition having the following property: under the following condition for the concentration a (wt %) of said coating agent in the coating composition 0<a<60, the concentration a of said coating agent and the surface tension b (dyne/cm) of the coating composition satisfy the following relationship b ≦(− a /15)+26, and said coating agent containing inorganic oxide particles to which an organic compound is bonded, the organic compound having the following formula: wherein R 1 and R 2 are each a hydrogen atom or an alkyl group or aryl group having 1 to 8 carbon atoms, and may be the same or different; and m is an integer of 1 to 3; R 3 is a bivalent organic group having an aliphatic or aromatic structure with 1 to 12 carbon atoms, and may contain a chain, branched or cyclic structure; R 4 is a bivalent organic group having a molecular weight of 14 to 10,000; R 5 is an organic group of valency n+1, and n is an integer from 1 to 20; and Z is a monovalent organic group having in the molecule thereof a polymerizable unsaturated group that is able to undergo an intermolecular crosslinking reaction under the presence of an active radical species.