| abstract |
(A1) having a cationic functional group containing at least one of a primary nitrogen atom and a secondary nitrogen atom, and a compound (a2) having a nitrogen atom other than the compound (a1) A compound (B) which is at least one selected from the group consisting of a compound (A), a compound (b1) having at least one of a germanium atom, a tin atom, a selenium atom and a zirconium atom and a carboxy group, ). ≪ / RTI > |