abstract |
(57) [Summary] [Purpose] To improve biodegradability, desilvering property, bleaching fog, and fog due to contamination. Consists of a metal chelate compound such as Fe (III) of the formula compound. (R 1 is, for example, an aliphatic group, R 2 to R 4 Is a hydrogen atom, L 1 , W 1 and W 2 are alkylene groups, and A 1 and A 2 are carboxyl groups. ) [Chemical 1] |