| abstract |
A resin comprising a structural unit represented by formula (aa): n n n n n n n n n n wherein T 1 represents a C3-C34 sultone ring group optionally having a substituent, n X 1 represents —O— or —N(R c )—, n R c represents a hydrogen atom or a C1-C6 alkyl group, n Z 1 represents —X 2 — or —X 3 —X 4 —CO—X 5 —, where X 2 , X 3 and X 5 independently each represent a C1-C6 alkanediyl group, X 4 represents —O— or —N(R d )—, and R d represents a hydrogen atom or a C1-C6 alkyl group, and n R 1 represents a hydrogen atom, a halogen atom, or a C1-C6 alkyl group optionally having a halogen atom. |