ULTRAVIOLET LIGHT ABSORBING COMPOUND, MANUFACTURE AND USE OFSAME IN SILVER COLORING MATTER BLEACHING PROCESS PHOTOGRAPHIC MATERIAL AS IMAGE COLORING MATTER

摘要

compounds of the formulawhat a the rest of up - or trisazofarbstoffs, l and l 'an organic rest and b and b' of a cyclic organic rest meanand at least one of the bits b and b 'spectral absorption in the uv range coverage, and the remains of b and b' different from 2.4 - dihydroxyphenyl is 1 or 2, m and n is 0, 1 or 2.;the compounds are suitable as bildfarbstoffe in photographic silberfarbbleichmaterialien.