(meth)acrylic composition, coating material containing same and cured body

A cured body comprising:

• (A) a polymer having a constitutional unit derived from a (meth)acrylate represented by Formula (1):
• wherein
• X represents a single bond, or a divalent group selected from the group consisting of —C(R2)(R3)—, —C(═O)—, —O—, —OC(═O)—, —OC(═O)O—, —S—, —SO—, —SO2—, and any combination thereof;
• wherein R2 and R3 each independently represent a hydrogen atom, a linear alkyl group having 1 to 10 carbon atoms, a branched alkyl group having 3 to 10 carbon atoms, a cyclic alkyl group having 3 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms, a branched alkoxy group having 3 to 10 carbon atoms, a cyclic alkoxy group having 3 to 10 carbon atoms, a phenyl group, or a phenylphenyl group;
• or R2 and R3 are optionally linked to each other to, together with the carbon atom to which they are attached, form a cyclic alkyl group having 3 to 10 carbon atoms;
• Y represents an optionally branched alkylene group having 2 to 6 carbon atoms, a cycloalkylene group having 6 to 10 carbon atoms, or an arylene group having 6 to 10 carbon atoms;
• R1 represents a hydrogen atom or a methyl group;
• R4 and R5 each independently represent a linear alkyl group having 1 to 10 carbon atoms, a branched alkyl group having 3 to 10 carbon atoms, a cyclic alkyl group having 3 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms, a branched alkoxy group having 3 to 10 carbon atoms, a cyclic alkoxy group having 3 to 10 carbon atoms, a halogen atom, a phenyl group, or a phenylphenyl group;
• m represents an integer of 0 to 10;
• n represents an integer of 1 to 2;
• p represents an integer of 0 to 4;
• and
• q represents an integer of 0 to 5, or
• a copolymer including a constitutional unit derived from a (meth)acrylate represented by Formula (1) and a constitutional unit derived from a polyvalent vinyl monomer represented by Formula (3):
• wherein
• R10 and R11 are each independently selected from a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, a cycloalkoxyl group having 5 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, and a halogen atom;
• R12 represents a hydrogen atom or a methyl group;
• X represents any structure selected from the group consisting of a single bond, —O—, —S—, —SO—, —SO2—, —CO—, and structures represented by Formulas (4) to (7);
• Y and Z each independently represent an optionally branched alkylene group having 2 to 6 carbon atoms, a cycloalkylene group having 6 to 10 carbon atoms, or an arylene group having 6 to 10 carbon atoms;
• and
• p and q each independently represent an integer of 0 to 4,
• wherein
• R13 and R14 each independently represent any one selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms optionally having a substituent, an alkoxy group having 1 to 5 carbon atoms optionally having a substituent, an aryl group having 6 to 12 carbon atoms optionally having a substituent, an alkenyl group having 2 to 5 carbon atoms optionally having a substituent, and an aralkyl group having 7 to 17 carbon atoms optionally having a substituent;
• the substituents are each independently a halogen atom, an alkyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 12 carbon atoms;
• and
• c represents an integer of 1 to 20;
• wherein
• R15 and R16 each independently represent any one selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms optionally having a substituent, an alkoxy group having 1 to 5 carbon atoms optionally having a substituent, an aryl group having 6 to 12 carbon atoms optionally having a substituent, an alkenyl group having 2 to 5 carbon atoms optionally having a substituent, and an aralkyl group having 7 to 17 carbon atoms optionally having a substituent;
• or R15 and R16 are bonded to each other to form a carbocycle or a heterocycle having 1 to 20 carbon atoms;
• and
• the substituents are each independently a halogen atom, an alkyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 12 carbon atoms;
• wherein
• R17 to R20 each independently represent any one selected from the group consisting of a hydrogen atom, a halogen, an alkyl group having 1 to 20 carbon atoms optionally having a substituent, an alkoxy group having 1 to 5 carbon atoms optionally having a substituent, an aryl group having 6 to 12 carbon atoms optionally having a substituent, an alkenyl group having 2 to 5 carbon atoms optionally having a substituent, and an aralkyl group having 7 to 17 carbon atoms optionally having a substituent;
• or R17 and R18 are bonded to each other to form a carbocycle or a heterocycle having 1 to 20 carbon atoms, and R19 and R20 are bonded to each other to form a carbocycle or a heterocycle having 1 to 20 carbon atoms;
• and
• the substituents are each independently a halogen atom, an alkyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 12 carbon atoms;
• wherein
• R21 to R30 each independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms;
• and
• (B) an aromatic alcohol represented by Formula (2):
• wherein
• R6 represents a linear alkyl group having 1 to 10 carbon atoms, a branched alkyl group having 3 to 10 carbon atoms, a cyclic alkyl group having 3 to 10 carbon atoms, a linear alkoxy group having 1 to 10 carbon atoms, a branched alkoxy group having 3 to 10 carbon atoms, a cyclic alkoxy group having 3 to 10 carbon atoms, a halogen atom, a phenyl group, or a phenylphenyl group;
• R7 represents a hydrogen atom, —R8OH, or —(R9)SH;
• wherein R8 represents a linear alkylene group having 1 to 10 carbon atoms or a branched alkylene group having 3 to 10 carbon atoms;
• R9 represents a linear alkylene oxy group having 1 to 10 carbon atoms or a branched alkylene oxy group having 3 to 10 carbon atoms;
• and s represents an integer of 1 to 5;
• m represents an integer of 0 to 10;
• r represents an integer of 0 to 5,
• provided that when R7 represents a hydrogen atom, m represents an integer of 1 to 10, wherein
• the mass ratio of the constitutional unit derived from a (meth)acrylate represented by Formula (1) and the aromatic alcohol is 60:40 to 95:5.