Patent ID: 6974658

Claim:
A polymer compound for photoresist wherein said polymer compound is formed of a polymer compound having at least one skeleton represented by the following general formula (1), general formula (2A) or general formula (2B): wherein R is an alicyclic skeleton; and at least one of R x1 s is an electron-withdrawing group, the residual R x1 s being the same or different and being individually a monovalent organic group selected from the group consisting of a methyl group, an ethyl group, an isopropyl group, an n-butyl group, an s-butyl group, a t-butyl group, an isobutyl group and a pentyl group; with the proviso that R may contain a heteroatom, and that R and R x1 may be combined to form a ring; wherein at least one of R x1 s is an electron-withdrawing group, the residual R x1 s being the same or different and being individually a hydrogen atom or monovalent organic group; R 2 s may be the same or different and are individually a hydrogen atom or monovalent organic group; and n is an integer ranging from 2 to 25; with the proviso that at least two carbon atoms selected from carbon atoms constituting R 2 and carbon atoms to which said R 2 s are connected may be combined to form a condensed ring.