Patent ID: 7858287

Claim:
A photosensitive resin characterized by comprising a repeating unit represented by formula (1): (wherein R 1 represents a C2-C9 linear or branched divalent hydrocarbon group; each of R 2 to R 5 represents a hydrogen atom or a C1-C3 linear or branched hydrocarbon group; each of R 6 and R 7 represents an organic group, wherein R 6 and R 7 may together form a divalent organic group; and X − represents an anion); at least one of a repeating unit represented by formula (2): (wherein R 8 represents a C2-C9 linear or branched hydrocarbon group) and a repeating unit represented by formula (3): a repeating unit represented by formula (4): optionally, a repeating unit represented by formula (5):