| abstract |
A thermoplastic resin film having a coated layer thereon, the coating layer comprising a quaternary ammonium salt copolymer comprising (a) a structural unit represented by formula (I):n n wherein A represents -O- or -NH-; R¹ represents a hydrogen atom or a methyl group; R² represents an alkylene group having from 2 to 4 carbon atoms or -CH₂CH(OH)-CH₂-; R³, R⁴, R⁵, and R⁶, which may be the same or different, each represents an alkyl group having from 1 to 3 carbon atoms; R⁷ represents an alkyl group having from 1 to 10 carbon atoms or an aralkyl group having from 7 to 10 carbon atoms; n represents an integer of from 1 to 3; and X represents a chlorine atom, a bromine atom or an iodine atom, n(b) a structural unit represented by formula (II):n n wherein R⁸ represents a hydrogen atom or a methyl group; and R⁹ represents an alkyl group having from 1 to 22 carbon atoms, an aralkyl group having from 7 to 22 carbon atoms or a cycloalkyl group having from 5 to 22 carbon atoms, nand (c) a structural unit derived from a monomer copolymerizable with monomers providing structural units (a) and (b) at a (a):(b):(c) weight ratio of 30 to 70:30 to 70:0 to 40. The thermoplastic resin film exhibits excellent offset printability and excellent antistatic properties. |