Curable composition and shaped product

Abstract

A curable composition comprises a cationic curable silicone resin and a leveling agent, the cationic curable silicone resin comprises a silsesquioxane unit, has a monomer unit having an epoxy group in a proportion of not less than 50% by mol in a total monomer unit, and has a number average molecular weight of 1000 to 3000.

1 . A curable composition comprising a cationic curable silicone resin and a leveling agent, wherein the cationic curable silicone resin comprises a silsesquioxane unit, has a monomer unit having an epoxy group in a proportion of not less than 50% by mol in a total monomer unit, and has a number average molecular weight of 1000 to 3000. 
     
     
         2 . A curable composition according to  claim 1 , wherein the cationic curable silicone resin has a silsesquioxane unit represented by the formula (1): R 1 SiO 3/2    wherein R 1  represents a group comprising an epoxy   group; a hydrogen atom; or a hydrocarbon group;   in a proportion of not less than 50% by mol in the total monomer unit constituting the cationic curable silicone resin.   
     
     
         3 . A curable composition according to  claim 1 , wherein the cationic curable silicone resin further comprises a unit represented by the formula (2): R 1 SiO(OR 2 )
 wherein R 1  represents a group comprising an epoxy group; a hydrogen atom; or a hydrocarbon group; and   R 2  represents a hydrogen atom or a C 1-4 alkyl group; and   
       has a molar ratio of the silsesquioxane unit relative to the unit represented by the formula (2) of not less than 5. 
     
     
         4 . A curable composition according to  claim 1 , wherein the silsesquioxane unit comprises a unit represented by the formula (3): R 3 SiO 3/2    wherein R 3  represents a group comprising an alicyclic epoxy group, and   
       a unit represented by the formula (4): R 4 SiO 3/2  
 wherein R 4  represents an aryl group which may have a substituent. 
 
     
     
         5 . A curable composition according to  claim 1 , wherein the cationic curable silicone resin has a molecular weight distribution Mw/Mn of 1 to 3. 
     
     
         6 . A curable composition according to  claim 1 , wherein the leveling agent comprises at least one of a silicone-series leveling agent and a fluorine-containing leveling agent, and the leveling agent has at least one of a reactive group to an epoxy group, and a hydrolytically condensable group. 
     
     
         7 . A curable composition according to  claim 1 , wherein the leveling agent has a proportion of 0.1 to 10 parts by weight relative to 100 parts by weight of the cationic curable silicone resin. 
     
     
         8 . A curable composition according to  claim 1 , wherein the leveling agent comprises a silicone-series leveling agent having a hydroxyl group, and the leveling agent has a proportion of 0.5 to 5 parts by weight relative to 100 parts by weight of the cationic curable silicone resin. 
     
     
         9 . A shaped product comprising a hardcoat layer, wherein the hardcoat layer is a cured product of a curable composition recited in  claim 1 . 
     
     
         10 . A shaped product according to  claim 9 , which comprises the hardcoat layer alone and has an average thickness of 10 to 200 μm. 
     
     
         11 . A shaped product according to  claim 9 , which further comprises a transparent substrate layer, wherein the transparent layer has a side provided with the hardcoat layer. 
     
     
         12 . A shaped product according to  claim 10 , which is produced by a roll-to-roll system. 
     
     
         13 . A shaped product according to  claim 9 , which comprises the hardcoat layer and a three-dimensional base.