Patent ID: 7709549

Claim:
A photocurable resin composition, comprising: (1) a siloxane compound containing a photoreactive group produced by hydrolyzing and condensing a system comprising the following (a), (b) and (c) in the presence of a basic catalyst by using water at an amount in excess of the amount required for hydrolyzing and condensing all hydrolyzable groups (a) at least one photoreactive group-containing hydrolyzable silane or a hydrolysate or a partial condensation product thereof, the photoreactive group-containing hydrolyzable silane being selected from those represented by the following general formulae (i) and (ii): CH 2 ═C(CH 3 )COOC 3 H 6 Si(CH 3 ) 3−a (OR 1 ) a (i) CH 2 ═CHCOOC 3 H 6 Si(CH 3 ) 3−b (OR 2 ) b (ii) wherein R 1 and R 2 are independently an alkyl group containing 1 to 4 carbon atoms or acetyl group, and a and b are independently an integer of 1 to 3; with the proviso that when one hydrolyzable silane is used for the photoreactive group-containing hydrolyzable silane, entire amount of the hydrolyzable silane comprises a trifunctional silane having 3 hydrolyzable groups, and when two or more hydrolyzable silanes are used for the photoreactive group-containing hydrolyzable silane, at least 70% by mole of the hydrolyzable silanes comprise a trifunctional silane having 3 hydrolyzable groups; (b) a dimethyisiloxane containing a hydrolyzable group at opposite ends represented by the following general formula (iii): wherein R 3 is H, CH 3 , C 2 H 5 , or CH 3 CO, A is O or C 2 H 4 , n is an integer of 5 to 100, and x is an integer of 1 to 3; and (c) a fluorine-containing hydrolyzable silane represented by the following general formula (iv) R 4 R 5 3−c Si(OR 6 ) c (iv) wherein R 4 is an organic group containing a perfluoroalkyl group containing 1 to 20 carbon atoms or an organic group containing a hexafluoropropene oxide, R 5 is an alkyl group containing 1 to 10 carbon atoms, cyclohexyl group, or phenyl group, R 6 is an alkyl group containing 1 to 4 carbon atoms or acetyl group, and c is an integer of 1 to 3; content of the component (1) being 20 to 100 parts by weight in relation to 100 parts by weight of total of the component (1) and component (2); (2) a compound containing (meth)acryl group other than the component (1): content of the component (2) being 0 to 80 parts by weight in relation to 100 parts by weight of total of the component (1) and the component (2); (3) (CF 3 (CF 2 )mSO 2 ) 2 NLi; wherein m is 0 to 7, content of the component (3) being 0.5 to 15 parts by weight in relation to 100 parts by weight of total of the component (1) and the component (2); and (4) a radical photopolymerization initiator, content of the component (4) being 0.1 to 20 parts by weight in relation to 100 parts by weight of total of the component (1) and the component (2).