PHOTOGRAPHIC WATER-INSOLUBLE COMPOUNDS HAVING A HYDROPHOBIC DIFFUSION-FAST SUBSTITUENT

摘要

Photographic materials are described which comprise in a light-sensitive silver halide emulsion layer or in another water-permeable colloid layer a non-diffusing water-insoluble photographic component containing a hydrophobic diffusion-fast making group of the formula WHEREIN X is an ether group, a thioether group, a sulphonyl group, CONH, NHCO or SO2NH and each of R1 and R2 is a branched-chain C4-C12 alkyl group. The described materials comprise the said component in the form of a finely divided dispersion which shows no crystallization tendency.