Patent ID: 7162131

Claim:
A radiation-curable composition comprising components (A) and (B): (A) at least one member selected from the group consisting of hydrolyzates of hydrolyzable silane compounds represented by general formula (1) and condensates of said hydrolyzates (R 1 ) p (R 2 ) q Si(X) 4-p-q (1) wherein, in general formula (1), R 1 is a non-hydrolyzable organic group having 1 to 12 carbon atoms that contains fluorine atoms, R 2 is a non-hydrolyzable organic group having 1 to 12 carbon atoms (but excluding ones that contain fluorine atoms), X is a hydrolyzable group, p is an integer of 1 or 2, and q is an integer of 0 or 1; and (B) a photoacid generator; wherein a content of silanol (Si—OH) groups out of all the bonding groups on Si in the composition is 10 to 50%.