abstract |
This invention relates to new compounds of the formula H2C----CH-C-NH-C-Z ¦¦ PARALLEL PARALLEL (1); ClHOO m-1 n M IS 1 OR 2, N IS 2, 3, 4, 5 OR 6, Z represents a polyamine radical containing a basic tertiary or a quaternary nitrogen atom. The compounds of formula (m) an useful as crosslinking agents. They an particularly useful for crosslinking gelatine, preferably gelatin present in layers of photographic material. |