It is an object of the present invention, which has been made in view of the above-mentioned state of the art, to provide a protolytically leaving group-containing copolymer which can exhibit high levels of changes in characteristics, such as solubility in alkaline aqueous solutions after free proton treatment as compared with the, solubility before such treatment, and of substrate adhesion, developability, chemical resistance and etching resistance and which can judiciously be applied in various fields of application.
The present invention is related to a protolytically leaving group-containing copolymer which is a copolymer having hydroxyl groups each bound to the main chain thereof via one carbon atom, aromatic rings, and protolytically leaving groups, wherein said protolytically leaving group-containing copolymer showing an alkali dissolution rate of 20 × 10-10 to 1,500 × 10-10 m/second prior to protolytically leaving group elimination.
鉴于上述技术现状,本发明的目的是提供一种含原聚离去基团的共聚物,该共聚物在自由质子处理后,与处理前相比,在碱性
水溶液中的溶解度、基材粘附性、显影性、耐
化学性和耐蚀刻性等特性可发生高
水平的变化,并可合理地应用于各种应用领域。
本发明涉及一种含原聚离去基团的共聚物,它是一种共聚物,具有通过一个碳原子与主链结合的羟基、芳香环和原聚离去基团,其中所述含原聚离去基团的共聚物在原聚离去基团消除前的碱溶解速率为 20 × 10-10 至 1,500 × 10-10 米/秒。