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):
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,
(b) a structural unit represented by formula (II):
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,
and (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.
一种热塑性
树脂薄膜,薄膜上有涂层,涂层由季
铵盐共聚物组成,季
铵盐共聚物包括 (a) 由式 (I) 表示的结构单元:
其中 A 代表-O-或-NH-;R¹ 代表氢原子或甲基;R² 代表具有 2 至 4 个碳原子的亚烷基或-CH₂CH(OH)-CH₂-;R³、R⁴、R⁵ 和 R⁶可以相同或不同,各自代表具有 1 至 3 个碳原子的烷基;R⁷ 代表具有 1 至 10 个碳原子的烷基或具有 7 至 10 个碳原子的芳烷基; n 代表 1 至 3 的整数;以及 X 代表
氯原子、
溴原子或
碘原子、
(b) 由式(II)代表的结构单元:
其中 R⁸ 代表氢原子或甲基;R⁹ 代表具有 1 至 22 个碳原子的烷基、具有 7 至 22 个碳原子的芳基或具有 5 至 22 个碳原子的环烷基、
(c) 结构单元,由可与提供结构单元(a)和(b)的单体以 30 至 70:30 至 70:0 至 40 的(a):(b):(c)重量比共聚的单体衍生而来。这种热塑性
树脂薄膜具有优异的胶印性和抗静电性。