| abstract |
Provided are a curable composition including an amide compound that is represented by Formula (1) below and of which a density of sulfonic acid is 3.9 milliequivalent/g or greater. n n n n n n n n n n n n m represents an integer of 1 or greater, n represents an integer of 2 or greater, L 1 represents a m+1-valent linking group, and L 2 represents an n-valent linking group. R 1 represents a hydrogen atom or an alkyl group, and R 2 represents —SO 3 − M + or —SO 3 R 3 (R 3 represents an alkyl group or an aryl group). Here, in a case where there are plural R 2 's, not all of the R 2 's are —SO 3 R 3 . M + represents a hydrogen ion, an inorganic ion, or an organic ion. |