Eastman-kodak Company

Jerrold N Poslusny

Paul B Merkel

David A Steele

Wojciech K Slusarek

Ronald E Leone

Richard P Szajewski

Bernard A Clark

Stephen P Singer

Lawrence G Anderson

Thomas R Welter

Xiqiang K Yang

Jared B Mooberry

Paul L Stanley

Zheng Zhi Wu

William J Begley

Paul L Zengerle

Drake M Michno

Melvin M Kestner

Paul A Burns

James P Merrill

Teh-Hsuan Chen

Hugh M Williamson

Janet N Younathan

Robert C Stewart

Richard K Rothrock

Philip A Allway

Philip T Lau

James Henry Reynolds

Robert J Ross

Daniel L Kapp

David S Ross

Robert N Gourley

Norma B Platt

Kenneth N Kilminster

Susan D Hill

Anabisdally I Bodden

Christopher W Grote

Timothy D Norden

John R Ross

Zheng Zi Wu

Peter P Garrisi

David Hales Bown

A process for making a direct dispersion of a photographically useful material comprising: mixing (i) an aqueous phase and (ii) a liquid organic phase under conditions of shear or turbulence to form a dispersion of the organic phase dispersed in the aqueous phase; wherein the liquid organic phase comprises one or more photographically useful materials and one or more organic solvents having a boiling point of at least 150&#xb0; C., a molecular weight less than or equal to 300, and a solvatochromic parameter &#x3b2; value greater than or equal to 0.50, wherein the weight ratio of the sum of the solvents having a boiling point of at least 150&#xb0; C., a molecular weight less than or equal to 300, and a solvatochromic parameter &#x3b2; value greater than or equal to 0.50 to the photographically useful materials does not exceed 0.25. The use of relatively low levels of specified high-boiling organic solvents enables the direct dispersion of hydrophobic photographically useful materials with low solubility in conventional primary photographic useful solvents without crystallization problems or excessive decomposition.

Method of preparation of direct dispersions of photographically useful chemicals

Color photographic element containing coupler moiety with improved amino acid timing group

The invention provides a color negative photographic element comprising a light sensitive silver halide emulsion imaging layer having associated therewith a cyan dye-forming coupler dispersion comprising a first 2-ureido-5-acylamino substituted phenolic cyan dye-forming coupler &lsqb;P&rsqb;, a second phenolic cyan dye-forming coupler &lsqb;AP&rsqb; where the 2-substituent is other than an ureido group, a substantially non-color-developable phenolic activator compound &lsqb;ACT&rsqb;, and a non-phenolic organic coupler solvent having a boiling point of at least 150C; wherein compounds represented by &lsqb;P&rsqb;, &lsqb;AP&rsqb;, and &lsqb;ACT&rsqb; are present in the coupler dispersion in relative weight fractions of from 0.30 to 0.65 for &lsqb;P&rsqb;, from 0.15 to 0.35 for &lsqb;AP&rsqb;, and from 0.15 to 0.35 for &lsqb;ACT&rsqb;, provided the sum of the relative weight fractions for &lsqb;P&rsqb;&plus;&lsqb;AP&rsqb;&plus;&lsqb;ACT&rsqb;&equals;1, and the weight ratio of the non-phenolic coupler solvent in the coupler dispersion is from 0.30 to 2.0 relative to the sum of &lsqb;P&rsqb;&plus;&lsqb;AP&rsqb;&plus;&lsqb;ACT&rsqb;. Photographic elements incorporating the dispersion formulation of this invention provide good activity, a cyan dye of high density and acceptable absorption maximum for color negative films. In addition, partial substitution of less expensive cyan auxiliary phenolic coupler &lsqb;AP&rsqb; and activator &lsqb;ACT&rsqb; for cyan phenolic coupler &lsqb;P&rsqb; advantageously allows cost savings.

Cyan coupler dispersion with increased activity

The invention provides a color photographic element that contains a coupler useful for forming a neutral silver-based image. Such couplers are particularly useful to provide an auxiliary silver-based image for optically recording a sound track in color motion picture films.

Color photographic element containing coupler useful for forming neutral silver-based image

Photographic elements containing aryloxypyrazolone couplers and sulfur containing stabilizers

The invention provides a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a coupler based on a 1-aryl-3-arylpyrazol-5-one ring and represented by formula I:

Photographic element containing a stable aryloxypyrazolone coupler and process employing the same

A photographic element comprises: (a) a support; and (b) at least one silver halide emulsion layer; wherein said emulsion layer contains (c) at least one magenta dye-forming pyrazolone DIR coupler of structure I; and (d) at least one magenta dye-forming imaging coupler of structure II, structure IIIa or structure IIIb, below:

Combinations of purine-releasing pyrazolone DIR couplers and pyrazolone of pyrazolotriazole imaging couplers

This invention comprises a photographic element having a support bearing one or more silver halide emulsions and one or more DIR couplers of structure I or II below:

Photographic element containing a DIR coupler

Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a coupler based on a 1-aryl-3-arylpyrazol-5-one or a 1-aryl-3-alkylpyrazol-5-one ring and represented by formula I: ##STR1## wherein: X represents an aryl, alkyl, alkylamino, or arylamino group; Y can be carbon or sulfur; in is 1 when Y is carbon and 2 when Y is sulfur; R represents a halogen or an alkyl group; and o is 0 to 4, provided that two or more R substituents may join to form one or more additional rings; Z is either (a) an aryl group represented as Ar.sup.3 Q(n) where Q represents n independently selected substituents bonded to the Ar.sup.3 ring; and n is 0 to 5, provided that two or more Q substituents may join to form one or more additional rings or (b) an alkyl group; OAr.sup.4 is an aryloxy group; and P represents p independently selected substituents bonded to the OAr.sup.4 aryloxy ring, provided that P may not be a nitro group ortho to the oxygen atom linking the aryloxy group to the 4-position of the pyrazolone ring; and p is 0 to 5, provided that two or more P substituents may join to form one or more additional rings; provided that X and an R group may join to form an additional ring.

Photographic element containing a stable aryloxypyrazolone coupler and

Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a pyrazol-5-one coupler bearing a 4-aryloxy coupling-off group containing a group capable of releasing a photographically useful group (PUG) wherein:

Photographic element containing pyrazolone pug releasing coupler and

The invention provides a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith an 1-arylpyrazol-5-one coupler bearing a 4-aryloxy coupling-off group containing a group capable of releasing a photographically useful group (PUG) wherein: (1) the 1-arylpyrazol-5-one ring contains a 3-aryl substituent which in turn contains substituents for which the sum of the Hammett's .sigma. constant values is at least 0, provide that two or more such substituents may join to form one or more additional rings; and (2) the 4-aryloxy coupling-off group:

Photographic element containing pyrazolone PUG releasing coupler and

This invention comprises a photographic element having a support bearing at least one silver halide emulsion and at least one DIR coupler of structure I: ##STR1## wherein: Z is a moiety which can react with oxidized developer to release a coupling-off group;

This invention comprises a photographic element, comprising a support bearing at least one silver halide emulsion and at least one benzoylacetanilide yellow dye-forming DIR coupler of structure I, below: ##STR1## wherein: each R.sub.1 is individually selected from the group consisting of halogen atoms and alkyl and alkoxy groups;

Photographic element containing a benzolylacetanilide DIR coupler

This invention comprises a photographic element, comprising a support bearing at least one silver halide emulsion and at least one acylacetanilide yellow dye-forming DIR coupler of structure I, below: ##STR1## wherein: R.sub.1 is a t-alkyl group or a phenyl group;

Photographic element containing an acylacetanilide DIR coupler

This invention comprises a photographic element, comprising a support bearing at least one silver halide emulsion and at least one malonanilide yellow dye-forming DIR coupler of structure I, below: ##STR1## wherein: R.sup.1 and R.sub.2 are individually selected from the group consisting of halogen atoms and alkoxycarbonyl, aryloxycarbonyl, carbamoyl, carbonamido, sulfonamido, sulfamoyl, alkylsulfonyl, arylsulfonyl, sulfonyloxy, acyloxy and cyano groups and each is in the para position or in either meta position relative to the NH group of the anilide; m and n are individually 0 or 1; R.sub.3 and R.sub.4 are individually a halogen atom or an alkyl group and may be in the para position or either meta position relative to the NH group of the anilide; X and Y are individually a halogen atom or an alkyl or alkoxy group; and R.sub.5 is an alkyl group with 3 to 10 carbon atoms or a phenyl group.

Photographic element containing a malonanilide DIR coupler

Growing community of inventors

Rochester, NY, United States of America

Jerrold N Poslusny