| 摘要 |
There is provided a modified hydroxy naphthalene novolak resin optimal for a photosensitive composition and a resist material having high optical sensitivity, resolution, and alkali developability, and excellent heat resistance and moisture absorption resistance, and the modified hydroxy naphthalene novolak resin includes a structural moiety (I). In the formula, le is any one of a hydrogen atom, a tertiary alkyl group, an alkoxyalkyl group, an acyl group, an alkoxycarbonyl group, a hetero atom-containing cyclic hydrocarbon group, and a trialkylsilyl group; m is 1 or 2; R2's each independently is any one of a hydrogen atom, an alkyl group, an alkoxy group, an aryl group, an aralkyl group, and a halogen atom; and at least one of the R1's present in the resin is any one of a tertiary alkyl group, an alkoxyalkyl group, an acyl group, an alkoxycarbonyl group, a hetero atom-containing cyclic hydrocarbon group, and a trialkylsilyl group.; |
