Patent ID: 8071270

Claim:
A polyhydric compound represented by the formula (I): wherein R 51 , R 52 , R 53 , R 54 , R 55 , R 56 , R 57 , R 58 , R 59 , R 60 , R 61 , R 62 , R 63 , R 64 , R 65 , R 66 and R 67 each independently represent a hydrogen atom or a C1-C4 alkyl group, at least one selected from the group consisting of R 1 , R 2 , R 3 , R 4 and R 5 is a group represented by the formula (II): wherein Q 1 and Q 2 each independently represent a fluorine atom or a C1-C6 perfluoroalkyl group, U represents a C1-C20 divalent hydrocarbon group of which at least one methylene group may be replaced with â€”Oâ€”, â€”Sâ€”, â€”NHâ€”, â€”COâ€”, â€”COâ€”Oâ€” or â€”NRâ€” wherein R represents an alkyl group, and A + represents an organic counter ion, and the others are hydrogen atoms or groups represented by the formula (III): wherein X 1 , X 2 , X 3 and X 4 each independently represent a hydrogen atom or a C1-C4 alkyl group, n represents an integer of 0 to 3, W represents any one of the following groups: Z 1 represents a C1-C6 alkyl group or a C3-C12 cycloalkyl group, provided that when W is not â€”COâ€”Oâ€”, Z 1 may be a hydrogen atom, and ring Y represents a C3-C20 alicyclic hydrocarbon group.