Patent ID: 7919223

Claim:
A radiation-sensitive composition containing 1 to 80% by weight of a solid component and 20 to 99% by weight of a solvent, wherein the radiation sensitive composition contains a compound B which satisfies the following requirements of: (a) having a structure derived from a polyphenol compound A by introducing an acid-dissociating group to at least one phenolic hydroxyl group of the polyphenol compound A which is synthesized by a condensation between a di- to tetrafunctional aromatic ketone or aromatic aldehyde each having 5 to 36 carbon atoms with a compound having 1 to 3 phenolic hydroxyl groups and 6 to 15 carbon atoms, and (b) having a molecular weight of 400 to 2000, wherein a total content of the compound B and a solubilizer C is 50 to 99.999% by weight of a total weight of the solid component, wherein the solubilizer C is the same compound as the polyphenol compound A which is used to produce the compound B, and wherein the solid component further comprises at least one acid generator which generates acid upon exposure to KrF excimer lasers, extreme ultraviolet rays, electron beams or X rays.