Mario Dr. Fryberg

TL;DR: In this paper, the triazinyl radical is defined as a radical of the COR in which at least one of the substituents R 1 and R 2 is a radical, where R denotes alkyl having 1 to 8 carbon atoms, and n is 0, 1, 2 or 3.

TL;DR: In this paper, a yellow coupler of the formula ##STR1## is described, in which R and R' are alkyl, cycloalkyl or aryl and X 1 and X 2 are radicals which are detachable during the coupling reaction.

TL;DR: A photographic silver dye bleach material which contains a compound of the formula "STR1##", in which R is a substituted alkyl, R 1 is substituted or unsubstituted alkyls, p is 1 or 2, q is 0 or 1, p+q having to be 1 or two, and n is 1 to 20, or a salt of this compound is distinguished by high contrast, high sharpness and good color reproduction.

TL;DR: The DIR coupler can contribute substantially to improving interlayer color correction and to the image grain and the sharpness of the photographic images obtained after imagewise exposure and usual processing of said photographic material as mentioned in this paper.

TL;DR: A process for the production of photographic color images by the silver dye bleach process, by exposure, silver development, dye formation, dye bleach, silver bleach and fixing of a photographic material which, in a light-sensitive silver halide emulsion layer or in an adjacent layer, contains, dispersed in oil, an oil-soluble triazene of the formula ##STR1## and an oil solvable coupling component as mentioned in this paper, in which Ar 1 is aryl or an aromatic heterocyclic radical, R 1 is hydrogen, alkyl, hydroxyl