| abstract |
The present invention relates to a curable resin composition characterized by containing (A) a copolymer represented by general formula (1) (in the formula, X denotes an atomic group formed by removing a number (k) of mercapto groups from a polyfunctional thiol compound having at least k mercapto groups, Y denotes a monovalent organic group derived from a copolymer obtained by copolymerizing an unsaturated monomer, and k is an integer between 3 and 10), (B) silica microparticles, (C) a reactive monomer and (D) a polymerization initiator. The present invention can provide a hard coating agent which exhibits little shrinkage upon curing and which can achieve both little shrinkage upon curing and blocking resistance if necessary and, by using the hard coating agent, can also provide a hard coating film or hard coating-treated plastic base material having high pencil hardness and low curling properties. |