Verfahren zur Haertung von photographischen gelatinehaltigen Schichten

摘要

1340361 Hardening gelatine AGFA-GEVAERT AG 5 Jan 1971 [17 Jan 1970] 425/71 Heading C3H [Also in Divisions G2 and C2] Gelatine layers, especially photographic gelatine layers, are rendered hardenable on treatment with alkali by incorporating one or more trimesic-aldehyde compounds of the formula wherein X is -CHO, -CH(OCH 3 ) 2 or and R 1 , R 2 and R 3 are each -OH, -OCH 3 or -Cl. The hardeners are latent hardeners, the gelatine being hardening on contact with aqueous alkali during the processing stage.