Provided is a photosensitive alkali-soluble resin comprising a compound of formula (I), a method of preparing the same, and a color photosensitive resist containing the same, wherein n1, n2, R1, R2 and R3 are defined as herein. The photosensitive alkali-soluble resin is prepared by: copolymerizing ethylene oxide with α-hydroxyalkyl phenyl ketone to obtain the first intermediate product, followed by copolymerizing the first intermediate product with a copolymerization product of glycerin acrylate, styrene, and maleic anhydride to obtain the second intermediate product, and oxidizing the second intermediate product to produce the photosensitive alkali-soluble resin.
本发明提供了一种由式(I)化合物组成的光敏碱溶性
树脂、其制备方法以及含有该化合物的彩色光敏抗蚀剂,其中n1、n2、R1、R2和R3的定义如本文所述。光敏碱溶性
树脂的制备方法是:将
环氧乙烷与 α-羟基烷基苯基酮共聚,得到第一中间产物,然后将第一中间产物与
丙烯酸甘油酯、
苯乙烯和
马来酸酐的共聚产物共聚,得到第二中间产物,再将第二中间产物氧化,制得光敏碱溶性
树脂。