Eastman-kodak Company

Eastman Kodak

Ping-Wah Tang

Stanley W Cowan

Philip T Lau

Terrence C Mungal

Tien-Teh Chen

Sundaram Krishnamurthy

Edward Schofield

Barbara Boland Lussier

Thomas A Rosiek

Harold I Machonkin

Thomas H Jozefiak

Robert G Cameron

David J Decker

Margaret D Steele

Frank T Melia

Jeffrey R Neff

Donald J Schuster

A color photographic element includes a support, a silver halide emulsion layer, and associated therewith a yellow dye-forming coupler having the formula ##STR1## wherein R.sup.1 represents a tertiary alkyl group containing 4 to about 20 carbon atoms; R.sup.2 represents an alkyl, aryl, or heterocyclic group; X represents hydrogen or a substituent; Y and Z each independently represent a group consisting of those substituents having a Hammett sigma.sub.para constant greater than zero; and m and n is each 1 to 4.

Silver halide photographic element containing improved yellow

A color photographic film or paper comprises at least one silver halide emulsion layer having associated therewith a dye-forming coupler compound of the formula ##STR1## wherein: one of Z.sub.a and Z.sub.b is --N=and the other is ##STR2## to which ring 'A' is directly attached; R.sup.0 represents hydrogen or a substituent;

Pyrazolotriazle dye-forming photographic coupler

A color photographic element includes a support, a silver halide emulsion layer, and associated therewith a phenolic dye-forming coupler having the formula ##STR1## wherein R.sup.1 represents hydrogen, a straight or branched chain alkyl group having 1 to about 20 carbon atoms, a cycloalkyl group having about 3 to 8 carbon atoms in the ring, or an aryl group having 6 to about 20 carbon atoms;

Silver halide photographic element containing improved cyan dye-forming

A photographic element comprises a light sensitive silver halide emulsion layer having associated therewith an open chain .alpha.-carbonyl acetanilide yellow dye-forming coupler having the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of alkyl, aryl, heterocyclic, and amino groups, provided that R.sub.1 may form a ring bonded to another carbon atom which is a member of Ring 'A';

Photographic yellow dye-forming couplers

The invention provides a photographic element comprising a silver halide emulsion layer having associated therewith a yellow dye-forming coupler having the formula: ##STR1## wherein X, Y, Z, W are independently selected from the group consisting of H, alkyl, aryl, halogen, alkoxy and aryloxy groups, provided that X and W may join to form a saturated ring; Each A is selected from the group consisting of halogen, alkoxy and aryloxy groups; m is an integer from 1 to 3; each B is independently selected from the group consisting of --C(O)OR.sub.2 and --NHSO.sub.2 R.sub.3 wherein R.sub.2 and R.sub.3 are independently selected from the group consisting of alkyl and aryl groups; n is an integer from 1 to 3; and R.sub.1 is a substituent group.

Photographic materials and process comprising a particular

The invention provides a photographic light sensitive silver halide emulsion layer having associated therewith a phenolic dye-forming coupler having the formula: ##STR1## wherein: R.sup.1 and R.sup.2 are independently selected from hydrogen and alkyl or aryl groups;

Photographic dye-forming coupler, emulsion layer, element, and process

A process of preparing an N-(4-chloropyrazolyl) amidoxime comprises reacting a compound of the formula ##STR1## with a compound of the formula ##STR2## to obtain compounds of formulae (IIIA) and/or (IIIB) ##STR3## and converting the compounds of formulae (IIIA) and/or (IIIB) to an amidoxime of formula (II) ##STR4## wherein R and R' independently represent hydrogen or a substituent.

Process of preparing pyrazolo  1,5-b! 1,2,4! triazoles

Color photographic materials comprise a support bearing a silver halide emulsion and at least one water-dispersible polymeric coupler. The polymeric coupler is formed by polymerization of a mixture of at least one ethylenically unsaturated coupler monomer containing a dye-forming coupler moiety and at least one ionic monomer containing an ionizable functional group, in a water-miscible organic solvent. The polymeric coupler contains less than 10 weight percent of the ionic monomer.

Methods of forming polymeric couplers

A process is disclosed for the preparation of .sup.1 H-pyrazo [1,5-b][1,2,4]triazole magenta couplers represented by formula (I): ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 each independently represents a hydrogen or a substituted or unsubstituted alkyl group, provided that R.sup.1 and R.sup.2 are not simultaneously a hydrogen atom; R.sup.6 represents a substituted alkyl, aryl, alkoxy, aryloxy or other organic functional group; L represents a substituted or unsubstituted alkylene; m is an integer greater than zero; n, y, and z each represents an integer of zero to five; and X is a coupling off group. The process comprises employing a nitrile compound of formula (II): ##STR2## as an intermediate to obtain the compounds of formula (I).

Intermediates and process for preparing magenta couplers

Color photographic materials containing polymeric couplers

The invention provides new magenta-dye-forming couplers, new magenta dyes formed therefrom, and new photographic elements containing the new couplers. The new couplers have the structure (I):

Photographic elements containing new magenta-dye-forming bis couplers

The invention provides new magenta-dye-forming couplers, new magenta dyes formed therefrom, and new photographic elements containing the new couplers. The new couplers have the structure (I): ##STR1## wherein ##STR2## has the structure (II) ##STR3## wherein each --R-- is independently a substituted or unsubstituted alkylene, alkoxylene, arylene, or aryloxylene group, and

Photographic elements containing new magenta-dye-forming tris couplers

The invention provides new yellow-dye-forming couplers, new yellow dyes formed therefrom, and new photographic elements containing the new couplers. The new couplers have the structure (I): ##STR1## wherein ##STR2## has the structure (II) ##STR3## wherein each --R-- is independently a substituted or unsubstituted alkylene, alkoxylene, arylene, or aryloxylene group, and Q-- has the structure (III): ##STR4## wherein: each R.sup.1 -- is independently t-butyl or a substituted aryl group;

Photographic elements containing new yellow-dye-forming tris couplers

Process for the formation of 1-H-pyrazolo[3,2-C]-1,2-4-triazoles useful in photographic chemistry as magenta couplers. The products have chlorine or bromine available at the coupling site, and the following formula: ##STR1## wherein X is chlorine or bromine, n is 0 to 6, and each R is an organic group as defined herein. The compounds are made from a hydrazone by reacting it ##STR2## with chlorine or bromine and a base. When the base is a substance such as sodium acetate, the reaction is conducted in one step. When the base is an amine such as a tertiary amine, reaction of (I) is conducted sequentially. Thus, in this second embodiment, (I) is first reacted with chlorine or bromine, and the reaction product thereby produced is treated with the tertiary amine.

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Rochester, NY, United States of America

Ping-Wah Tang