Ciba-geigy Ag

Ilford Ag

Ilford Imaging Switzerland Gmbh

Thomas Stauner

Paul Tschopp

Mario Fryberg

Bernhard Piller

David G Leppard

John Lenoir

Graham Evans

Rainer Kitzing

Alfred Froehlich

Otto Gottel

Walter Heierli

Kurt Baettig

Remon Hagen

Rolf Kyburz

Carlo Boragine

Monoazo dyes of general formula (IV)wherein R, R, R, X, M and n are as described in the specification, are excellent dyes for dyeing and printing of cellulose containing materials and textile materials and especially for the preparation of inks for ink jet printing.

Monoazo dyes and their preparation and use

This subject invention relates to novel dihydrazide compounds useful as dot-promoting agents in photographic image systems, methods for making them, and to photographic materials which comprise these compounds.

Dihydrazides

Color photographic material is provided which contains at least one silver halide emulsion layer containing a yellow color coupler of the formula ##STR1## wherein G is the radical of a yellow coupler which is bonded to the heterocyclic ring by means of the active methylene group, Z is --CO-- or --SO.sub.2 --, M is hydrogen if Z is --CO--, or a substituent and R is hydrogen or a substituent. The new two-equivalent yellow couplers lead due to their improved reactivity (high maximum density), minimal fog and high fastness to light and outstanding spectral properties of the dyestuffs formed therefrom to a color photographic material of advantageous properties.

Yellow photographic color couplers containing

The invention is directed essentially to photographic material containing, on a carrier, a layer with azo dyestuffs of the formula ##STR1## wherein A, B, X and Y are certain substituents, in a second main aspect azo dyestuffs of the formula ##STR2## wherein B' represents certain substituents and in a third main aspect azo deystuffs of the formula

Photographic material containing sulphonic acid group containing disazo

Color photographic material is provided which contains at least one silver halide emulsion layer containing a yellow color coupler of the formula ##STR1## wherein G is the radical of a yellow coupler which is bonded to the heterocyclic ring by means of the active methylene group, Z is --CO-- or --SO.sub.2 --, M is hydrogen if Z is --CO--; or a substituent and R is hydrogen or a substituent.

Silver halide color photographic material containing yellow coupler

In a first main aspect azo dyestuffs of the formula ##STR1## wherein A, B, X and Y are certain substituents, in a second main aspect azo dyestuffs of the formula ##STR2## wherein B' represents certain substituents and in a third main aspect azo dyestuffs of the formula

Sulfonic-acid-group containing disazo dyestuffs

The present invention relates to new compounds having an active methylene group or phenolic hydroxyl group and therefore capable of being used as photographic color couplers. The new compounds contain at least one radical of a phosphoric acid diester, phosphonic acid diester, phosphoric acid diamide, phosphonic acid diamide, phosphoric acid ester-amide or phosphonic acid ester-amide.

Color photographic recording material

A process for crosslinking hydrophilic colloids which contain amino, imino and/or hydroxyl groups is provided. The crosslinking agents correspond to the formula ##SPC1## Wherein A is hydrogen, hydroxyl, halogen, acylamino, an immonium-ether radical, the radical --NR.sub.1 R.sub.2 with R.sub.1 and R.sub.2 being hydrogen, alkyl, alkenyl, alkinyl, cycloalkyl, aryl, aralkyl or the nitrogen atom is part of a saturated ring which optionally contains further hetero-atoms, or the radical .sup.+NR.sub.3 R.sub.4 R.sub.5 with R.sub.3, R.sub.4 and R.sub.5 being hydrogen, alkyl, alkenyl, alkinyl, cycloalkyl, aryl, aralkyl or the nitrogen atom is part of a saturated or unsaturated ring which optionally contains further hetero-atoms, B is an ammonium or phosphonium radical and X.sup.- is an anion. The process is useful for crosslinking e.g. gelatine layers in photographic materials.

Process for crosslinking hydrophilic colloids

The present invention relates to the new compounds of the formula

Acylurea compounds

The present invention relates a process for crosslinking hydrophilic colloids, especially gelatine. The colloid is crosslinked with a water-soluble organic crosslinking agent which is allowed to act in a system consisting of at least two colloid layers. At least one layer contains the crosslinking agent and at least one layer which is free from crosslinking agents contains an aprotic solvent.

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Marly, Switzerland

Thomas Stauner