| abstract |
(57) Abstract: A method for removing contamination in a photographic material, comprising the steps of formula (I) wherein X is O or NH, n is 1 or 2, and p is 0, 1 Or 2, and M is a cation formed from hydrogen, an alkali metal atom, ammonium or an amine, and each R 1 is independently an amino acid residue from which a hydrogen atom on an amino group has been eliminated. And each R 2 is independently hydrogen, C 1 -C 8 alkyl, C 1 -C 8 alkoxy, halogen, cyano, COOR (R is hydrogen or C 1 -C 3 alkyl), CONH— R (R has the above meaning), SO 2 NH—R (R has the above meaning), NH—COR (R has the above meaning) or SO 3 M (M has the above meaning); Alternatively, if n is 1, R 2 is CO—R 3 (R 3 is C 1- Which method comprises incorporating at least one compound in the photographic material of C 3 alkyl or phenyl) may also be a). |