Agfa Gevaert Nv

Raphael K Van Poucke

Marcel J Monbaliu

Jan J Vandewalle

Christian C Van De Sande

Hector Alfons Vanden Eynde

Leo August Van Wijnsberghe

Hans-Heinrich Credner

Ernst Meier

Freddy Carolus Baeyens

Christian Charles Van Den Sande

Henri Francedillaois Olbrechts

Gaston Jacob Benoy

Wolfgang Himmelmann

Karl-Wilhelm Schranz

Walter F De Winter

George F Van Veelen

Paul A Mortelmans

Marc Godfried Mannens

Marc Willem Ailliet

Andree Verhecken

Andre K Claes

Roger Henri Vrydaghs

Luc K Martens

Color photographic motion picture elements adapted to form a multicolor photographic dye image and an integral, infrared-absorbing, dye sound track and comprising 1-hydroxy-2-N-(5-alkyl-thiazol-2-yl)-naphthamide couplers that are capable of forming quinone imine dyes absorbing infrared radiation in the spectral range from about 600 to about 1000 nm by reaction with an oxidized aromatic primary amino developing agent, the thiazol-2-yl group of said naphthamide couplers bearing a 4-para-C.sub.1 -C.sub.4 alkoxyphenyl group or a 4-para-C.sub.1 -C.sub.4 alkylphenyl group, the hydrogen atoms of said C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkyl being unsubstituted or at least one of them having been substituted by a halogen atom.

Photographic color elements

Color photographic motion picture elements adapted to form a multicolor photographic dye image and an integral, infrared-absorbing, dye sound track and comprising 1-hydroxy-2-N-(5-alkyl-thiazol-2-yl)-naphthamide couplers that are capable of forming quinone imine dyes absorbing infrared radiation in the spectral range from about 600 to about 1000 nm by reaction with an oxidized aromatic primary amino developing agent, the thiazol-2- yl group of said naphthamide couplers bearing a 4-para-C.sub.1 -C.sub.4 alkoxyphenyl group or a 4-para-C.sub.1 -C.sub.4 alkylphenyl group, the hydrogen atoms of said C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkyl being unsubstituted or at least one of them having been substituted by a halogen atom.

Photographic elements comprising thiazolyl couplers capable of forming

The present invention relates to compounds of the type comprising a ballasting group which renders said compounds substantially fast to diffusion in hydrophilic colloid media and at least one photographically useful group which is chemically linked to said ballasting group, and to photographic elements containing at least one compound of the type referred to. The ballasting groups in the compounds according to the present invention are derived from mono- or di-esters or -ethers of glycerol. The linkage between ballasting group and photographically useful group can be realized via acid chlorides which are derived from the above-said glycerol derivatives.

Ballasted compounds and photographic elements containing such compounds

A photographic silver halide material comprising a compound which is capable of being reduced by a silver halide developing agent at a rate slower than that of image-wise developable silver halide and in reduced state is capable of releasing a photographically useful group, characterized in that said compound corresponds to the following formula: ##STR1## wherein: R.sup.10 and R.sup.20 (same or different)

Diffusion transfer material and process

Method of dispersing photographic adjuvants in a hydrophilic colloid composition for forming a water-permeable photosensitive or non-photosensitive colloid layer of a photographic silver halide element with the aid of at least one high-boiling substantially water-insoluble oil-former of the class of 1,3-dialkyloxy-2-propanols and the carboxylic, phosphoric, or phosphonic esters thereof.

Method of dispersing photographic adjuvants in a hydrophilic colloid

Method of dispersing photographic adjuvants in hydrophilic colloid compositions for forming a water-permeable photosensitive or non-photosensitive colloid layer of a photographic silver halide element with the aid of at least one high-boiling substantially water-insoluble oil-former of the class of dihydroxymethyl(5,2,1,0.sup.2,6)tricyclodecane and the carboxylic, phosphoric, or phosphonic di-ester derivatives thereof.

Method of dispersing photographic adjuvants in hydrophilic colloid

Cyan-forming phenol type color couplers comprising in the 2-position of the phenol a benzamido group carrying on the benzene nucleus of the benzamido group at least one --Q--Rf group wherein Q is --O--, --S--, or --SO.sub.2 --, and Rf is a short-chain fluorine-containing group derived from hexafluoropropylene or trifluorochloroethylene. These cyan-forming color couplers can be incorporated in (a) red-sensitized silver halide emulsion layer(s) of a photographic multilayer color element or in a non-light-sensitive colloid layer in water-permeable relationship with the red-sensitized emulsion layer(s).

Photographic elements containing cyan-forming color couplers

Cyan-forming color couplers according to the formula: ##STR1## wherein Z is hydrogen in the case of 4-equivalent couplers or a substituent that splits off upon color development, thus conferring a 2-equivalent character to the color coupler, and Y is a ballasting group. These cyan-forming color couplers can be incorporated in (a) red-sensitized silver halide emulsion layer(s) of a photographic multilayer color element or in a non-light-sensitive colloid layer in water-permeable relationship with the red-sensitized emulsion layer(s).

Photographic elements containing cyan-forming couplers

Latexes suited for homogeneously incorporating compounds with a photographically useful group into photographic silver halide emulsion materials. The latex incorporates a copolymer comprising recurring units of a monomer with photographically useful group, and recurring units of surface active monomer, according to the general formula: ##STR1## wherein: R.sup.1 is hydrogen or methyl,

Copolymer latex and photographic silver halide materials containing such

Novel magenta forming color couplers for use in silver halide color photography are described which correspond to the formula: ##STR1## wherein R.sub.1 represents hydrogen, alkyl or aryl; R.sub.2 represents fluoroalkyl, cyanoalkyl or phenyl; X is hydrogen or a displaceable group; Ar represents phenylene and Y represents alkyl, aryl, alkylamino, arylamino or alkylarylamino.

Novel photographic color couplers

Novel color forming couplers for use in silver halide color photography are described. These couplers upon oxidative coupling with an aromatic primary amino color developing agent produce dyes of improved stability against light and dyes having favorable spectral absorption characteristics. The couplers have high coupling activity and thus produce high color densities. The novel couplers are acylacetanilide compounds whereof the phenyl nucleus of the anilide group carries oxyhydrocarbon groups, preferably alkoxy groups in the 2-, 4- and 5-position with respect to the amido group.

Silver halide elements containing yellow forming color couplers for

A method is described for preparing an .alpha.-substituted-.alpha.-acylacetamide wherein an .alpha.-acyl-.alpha.-halo-acetamide is allowed to react with an organic compound with pKa between 7 and 12 in a medium of an aprotic solvent and in the presence of a tetraalkylguanidine as basic condensing agent.

Preparation of .alpha.-acylacetamides using tetramethyl guanidine

2-equivalent color couplers for yellow carrying at the coupling position via an oxygen atom a 5-membered N-containing unsaturated heterocyclic substituent, that is split off during oxidative coupling with an aromatic primary amine color developer and forms a competing coupler molecule.

Silver halide emulsion containing two-equivalent color couplers for

Polymeric color couplers with improved light stability comprising in addition to color coupler units, competing coupler units and one or more copolymerized non-coupling monomeric units, thereof the weight ratio of the color coupler units to the competing coupler units is between 10:1 and 1:2 and the weight ratio of the copolymerized non-coupling monomeric units is at least 5%.

Silver halide emulsions containing polymeric color couplers

Color photographic material containing a fast-acting hardener, which acts by activating carboxyl groups, wherein said material contains a 2-pyrazolin-5-one coupler precursor corresponding to one of the following general formulae I or II: ##STR1## wherein EACH OF R.sup.1, R and Y are substituents of the type used in 2-pyrazolin-5-one color couplers, and

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Berchem, Belgium

Raphael K Van Poucke