TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The epoxy compound (A) further contains atom group of formula: -O-C(=O)-N(-H)-R9- (X2). The curable resin composition further contains metal-oxygen bond-type structure (Y') of formula: R7-(-M(-R3)(-R4)-R2-M(-R5)(-R6))l-R8. The curable composition further contains thiol compound (D) of formula: (HS)p-R15. The curable resin composition further contains monomer (B) which does not correspond to epoxy compound (A), and has functional group of formula (Z1) and (Z2).R9=1-30C bivalent hydrocarbyl, in which at least one of the carbon atom in the hydrocarbyl is optionally substituted by hetero atom, and at least one of the hydrogen atom bonded with the carbon atom or hetero atom in the hydrocarbyl is optionally substituted by 1-10C hydrocarbyl or hetero atom;l=positive integer;M=silicon atom, germanium atom, tin atom, titanium atom, or zirconium atom;R2=1-50C saturated hydrocarbyl or oxygen atom;R3, R4, R5, R6, R7, R8=H, methyl, ethyl, propyl, butyl, phenyl, methoxy, ethoxy, propoxy, butoxy, hydroxy, vinyl, allyl, (meth)acryloyl oxypropyl or group of formula: O-M-O;p=1 or more;R15=1-30C p-valent hydrocarbyl, in which at least one of the carbon atom in the hydrocarbyl is optionally substituted by the hetero atom, at least one of the hydrogen atom bonded with the carbon atom or hetero atom in the hydrocarbyl is optionally substituted by 1-10C hydrocarbyl or hetero atom;Rz=H or methyl;andasterisk=bond.Preferred Process: The epoxy compound (A) and metal-oxygen bond-type structure (Y) are bonded.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The curable resin composition comprises curable resin (A11) obtained by copolymerizing epoxy compound (A) containing epoxy compound (A1) of formula (I), and an isocyanate compound (A2). The curable resin (A11) is obtained by copolymerizing epoxy compound (A1), isocyanate compound (A2) and polyol compound (A3).m=1 or more;R10=1-30C m-valent hydrocarbyl;R11, R12=1-30C bivalent hydrocarbyl, in which at least one of carbon atom in the hydrocarbyl is optionally substituted by hetero atom, at least one of the hydrogen atom bonded with the carbon atom or hetero atom in the hydrocarbyl is optionally substituted by 1-10C hydrocarbyl or hetero atom, and at least one of R10-R12 has linear structure;andX=joint structure obtained using hydroxy or hetero atom.