Eastman-kodak Company

Other

Eastman Kodak

Sundaram Krishnamurthy

Stanley W Cowan

Paul P Spara

Krishnan Chari

John L Pawlak

Rakesh Jain

David S Bailey

Wendell F Smith, Jr

Paul B Merkel

Charles E Romano, Jr

Ping-Wah Tang

Thomas A Rosiek

William R Schleigh

Stephen P Singer

Hugh M Williamson

Paul R Buckland

David J Giacherio

Thomas H Jozefiak

Vincent J Flow

Brian H Johnston

Kenneth N Kilminster

Ruthann M McGarry

David C Vogel

A silver halide photographic element comprising a magenta dye forming coupler and a compound of formula (A) associated with the coupler: ##STR1## wherein: each R.sup.20 independently represents an alkyl, alkenyl, or heteroaryl group; Ar represents an aryl or heteroaryl group. Photographic elements of the present invention exhibit low thermal pinking, while still having good image stability and hue.

Photographic elements with magenta dye forming couplers and stabilizers

The invention provides a photographic element comprising a support bearing at least one silver halide emulsion layer having associated therewith a 5-pyrazolone photographic coupler represented by the formula (I): ##STR1## wherein a) substituents G.sup.1, G.sup.2 and G.sup.3 are individually selected from the group consisting of hydrogen, halogen, alkyl, alkoxy, aryloxy, acylamino, alkylthio, arylthio, sulfonamido, sulfamoyl, sulfamido, carbamoyl, diacylamino, alkoxycarbonyl, aryloxycarbonyl, alkoxysulfonyl, aryloxysulfonyl, alkylsulfonyl, alkylsulfoxyl, arylsulfoxyl, arylsulfonyl, alkoxycarbonylamino, aryloxycarbonylamino, alkylureido, arylureido, acyloxy, nitro, cyano, and carboxy groups;

Photographic element containing a recrystallizable 5-pyrazolone

Low melting point epoxy scavenger compounds are disclosed which contain a pH dependent ionizable group to facilitate migration of the scavenger from an adjacent scavenger layer (that does not contain any coupler) to an imaging layer (containing coupler and emulsion) of a photographic element at the pH of development. One aspect of the invention comprises a process of forming an aqueous dispersion of an epoxy compound of the structural formula SI: ##STR1## wherein: R is H, an alkyl group, or an aryl group; L.sub.1 is an alkyl group or an aryl group; L.sub.2 is --O--, --CO--, --S--, --SO.sub.2 --, --PO.sub.2 --, --CO.sub.2 --, --NHCO-- or --NHSO.sub.2 --, wherein L.sub.2 may be orientated in either direction; L.sub.3 is an alkyl group; m is 0 or 1; p is 0 or 1; and X is ##STR2## wherein R' is H or an alkyl or aryl group, with the proviso that where L.sub.2 comprises an ionizable group, X may also be an alkyl group or an aryl group; wherein the compound has a melting point of less than about 50.degree. C. and the process comprises adding the compound in a liquid state to an aqueous solution, and directly dispersing the compound in the aqueous solution. Thermal and photochemical yellowing of a color photographic element, such as a color print, is inhibited by incorporating such compounds into the photographic element.

Low melting point ionizable epoxy scavengers for residual magenta

Magenta image-dye couplers provide photographic elements and processes having superior photographic properties. The couplers are 3-anilino pyrazolone couplers having an aryl thio coupling-off group. The substituents of the coupler are specified to obtain advantageous properties.

3-anilino pyrazolone magenta couplers and process

In the production of 1H-pyrazolo[1,5-b] [1,2,4]triazole couplers, substituted 3-amino-pyrazole compounds add to suitable organic nitriles in the presence of an acidic condensing agent such as aluminum chloride, stannic chloride or boron trifluoride to directly produce desired amidine intermediates in good yields, avoiding the generation of moisture sensitive intermediate imidate esters. Moreover, the availability of oxidation techniques to convert amidines to 1H-pyrazolo[1,5-b] [1,2,4]triazole couplers in a single step makes it possible to produce these couplers in a total of two steps compared to conventional multi-step synthetic schemes.

One-step process for preparation of N-(4-substituted pyrazolyl) amidines

Thermal and photochemical yellowing of a color photographic element, such as a color print, is inhibited by incorporating into the photographic element an ionizable epoxy compound having the formula: ##STR1## wherein: R is H, alkyl, substituted alkyl, aryl, or substituted aryl; L.sub.1 is alkyl, substituted alkyl, aryl, or substituted aryl; L.sub.2 is O, CO, S, SO.sub.2, PO.sub.2, C(O)O, NHCO or NHSO.sub.2 ; L.sub.3 is alkyl or substituted alkyl; m is 0 or 1; p is 0 or 1; X is selected from the group consisting of ##STR2## wherein: R' is H, alkyl, substituted alkyl, aryl or substituted aryl, or, if L.sub.2 comprises an ionizable group, X is alkyl, substituted alkyl, aryl or substituted aryl.

Color photographic element containing new epoxy scavengers for residual

Yellowing of a processed photographic element is inhibited by incorporating a scavenger comound capable of reacting with magenta coupler, e.g. an epoxy compound, in a layer adjacent a layer containing the magenta coupler. In a preferred embodiment, the magenta coupler containing layer is sandwiched between layers containing the scavenger compound. Prior to processing at least one of these layers contains a solubilizing agent for the scavenger compound. In preferred embodiments, the processing solution used to process the photographic element containing an external solubilizing agent for the scavenger compound, preferably benzyl alcohol.

Color photographic element with improved resistance to thermal and

Yellowing of a processed photographic element is inhibited by incorporating a scavenger compound capable of reacting with magenta coupler, e.g. an epoxy compound, in a layer adjacent a layer containing the magenta coupler. At least one of these layers contains a solubilizing agent for the scavenger compound. In preferred embodiments, the processing solution used to process the photographic element contains an external solubilizing agent for the scavenger compound, preferably benzyl alcohol.

A photographic element having at least one photosensitive silver halide layer and associated therewith both a particular type of color coupler and a particular type of stabilizer. The color coupler is of the general formula (1) or (2): ##STR1## wherein A and B represent the same or different electron-withdrawing group,

Photographic elements containing particular color couplers in

A photographic element containing a silver halide emulsion layer having associated therewith, a dye-forming coupler and a dye stabilizer which has a melting point of less than 150.degree. C. (and preferably less than 100.degree. C.) and is of the formula: ##STR1## wherein R, m, q, X, Y, r, and (R.sup.7).sub.n are defined in the specification. The element particularly contains a coupler which forms a yellow dye upon reaction with oxidized developer. A method of making stabilizers of the above type using particular solvents and a non-aqueous workup, is also provided.

Liquid or low melting bis-phenol stabilizers for yellow image dye

Novel photographic silver halide materials contain dye-forming couplers represented by formula (I): ##STR1## wherein K is a coupler moiety based on pyrazolone, phenol, naphthol, enamine, or acylacetamide to which the ballast group is attached, are useful in photographic materials and processes. The containing the couplers exhibit increased coupling activity, and provide formation of dyes having improved maximum magenta image dye density, contrast, and development speed.

Photographic couplers having a ballast containing a sulfone or sulfoxide

A photographic element contains a photographic silver halide layer having associated therewith a bicyclic pyrazolo coupler having a ballast group represented by Formula (I):

Photographic material and process comprising a bicyclic pyrazolo coupler

An improved method of preparing an ortho-, meta- or para-silyl aromatic or heteroaromatic compound represented by the formula ##STR1## wherein X is oxygen or sulfur,

Method of preparation of organosilyl substituted aromatic or

Photographic silver halide materials and processes employ at least one coupler having a coupling-off group which includes a carbocyclic or heterocyclic ring which bears a silyl substituent on at least one of its ring carbon atoms and is attached via another of its ring atoms either directly or through a linking group or atom to the coupling position of the coupler. The silyl substituent bears three groups which are independently aromatic groups, heterocyclic groups, aliphatic groups or additional silyl groups bonded through a linking atom to the silicon atom in said silyl substituent.

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Penfield, NY, United States of America

Sundaram Krishnamurthy