There are provided a phenolic-hydroxyl-group-containing novolac resin and resist film that are excellent in developability, heat resistance, and conformability to substrates. The phenolic-hydroxyl-group-containing novolac resin is a polycondensate of which the essential reactive components are a phenolic-hydroxyl-group-containing compound (A) represented by Structural Formula (1) [where Ar is a structural part represented by Structural Formula (Ar-1) or (Ar-2), a phenolic-hydroxyl-group-containing compound (B) represented by Structural Formula (2) [where R3 is an aliphatic hydrocarbon group having 4 to 20 carbon atoms, and j is an integer from 1 to 3], and an aldehyde compound (C).
本发明提供了一种
酚羟基
酚醛
树脂和抗蚀剂薄膜,它们具有优异的显影性、耐热性和对基材的顺应性。含
酚羟基
酚醛
树脂是一种缩聚物,其主要活性成分是由结构式(1)代表的含
酚羟基化合物(A)[其中 Ar 是由结构式(Ar-1)或(Ar-2)代表的结构部分、由结构式(2)代表的含
酚羟基化合物(B)[其中 R3 是具有 4 至 20 个碳原子的脂族烃基,j 是 1 至 3 的整数],以及醛化合物(C)。