It is an object to provide a coating agent that can form a layer having excellent adhesiveness to a plastic substrate and having transparency and a high refractive index. The coating agent of the present invention comprises a compound represented by formula (I) [wherein A represents a phenyl group or a naphthyl group optionally having an electron-donating group as a substituent; Z represents a carbon atom or a silicon atom, R2 represents a hydrogen atom, a hydroxyl group, a linear or branched alkyl group, a linear or branched alkoxy group, a cyclic alkyl group, or a cyclic alkoxy group, X represents a single bond; an alkylene group optionally comprising an oxygen atom, a sulfur atom, a selenium atom, —NR—, a divalent aliphatic ring group, an arylene group, an amide structure or a urethane structure; a divalent aliphatic ring group; or an arylene group, Y represents a polymerizable functional group, n represents an integer of 2 or 3, m represents an integer of 1 or 2, l represents an integer of 0 or 1, and n+m+l=4; and when n represents an integer of 2 or 3, A is the same or different].
本发明的目的是提供一种涂层剂,该涂层剂可在塑料基材上形成一层具有良好粘合性的涂层,并且具有透明度和高折射率。本发明的涂层剂包括由式(I)代表的化合物[其中 A 代表苯基或
萘基,可选具有一个电子馈赠基团作为取代基;Z 代表碳原子或
硅原子;R2 代表氢原子、羟基、直链或支链烷基、直链或支链烷氧基、环状烷基或环状烷氧基;X 代表单键;可选包含氧原子、
硫原子、
硒原子、-NR-、二价脂肪族环基、芳烯基、酰胺结构或聚
氨酯结构的亚烷基; 二价脂肪族环基;或芳基,Y 代表可聚合官能团,n 代表 2 或 3 的整数,m 代表 1 或 2 的整数,l 代表 0 或 1 的整数,且 n+m+l=4 ;当 n 代表 2 或 3 的整数时,A 相同或不同]。