Eastman-kodak Company

Sterling Winthrop Inc.

Other

Paul P Spara

Sundaram Krishnamurthy

Paul A Burns

Edward R Bacon

Robert F Romanet

Susan M Fischer

Carl R Illig

Eugene Rex Cooper

John L Toner

Kurt A Josef

Brent D Douty

Rakesh Jain

Kimberly G Estep

Thomas J Caulfield

David G Lincoln

Shaughnessy Robinson

Donald A Upson

Stanley W Cowan

Krishnan Chari

Sol J Daum

Daniel L Kapp

Rajiv P Balasubramanian

John W Harder

Stephen A Godleski

Thomas A Rosiek

Charles Warren Wright

James J Seifert

Wendell F Smith, Jr

William R Schleigh

Marshall L Vandewalle

Bacon, Edward R

Ruthann M McGarry

Disclosed is a process comprising reacting a primary alcohol sulfone with a reducing agent and a halogenating agent in the presence of an amide compound present in an amount of less than 1 part amide per part of primary alcohol sulfone to form a vinylsulfone.

Synthesis of vinylsulfones

Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a bicyclic azole dye-forming coupler, having appended to a ring carbon at a non-coupling position thereof a substituent group represented by the formula:

Photographic element having improved dye stability, compound, and imaging process

The disclosure describes a photographic element comprising a light sensitive silver halide emulsion layer having associated therewith a magenta dye forming coupler containing an azole nucleus and a ballasted compound having Formula I, ##STR1## wherein each R.sub.1 is independently selected from the group consisting of hydrogen and an alkyl, aryl, acyl and acylamino group;

Photographic element containing pyrazoloazole magenta coupler and a

The invention provides a photographic element comprising a silver halide emulsion layer having associated therewith a dye-forming coupler represented by formula II: wherein

Photographic element having improved magenta dye light stability and

Disclosed is a photographic element comprising a silver halide emulsion layer having associated therewith a dye-forming coupler represented by Formula I: ##STR1## wherein R' represents the group ##STR2## in which R.sup.1, R.sup.2, and R.sup.3 independently selected all groups, provided that any two of R.sup.1, R.sup.2, and R.sup.3 may join to form a ring;

Photographic element containing magenta coupler having improved

The invention provides a photographic element comprising a silver halide emulsion layer having associated therewith a dye-forming coupler represented by formula II: ##STR1## wherein X is hydrogen or a coupling-off group;

The invention provides a photographic element comprising a silver halide emulsion layer having associated therewith a dye-forming coupler represented by formula I: ##STR1## wherein X is hydrogen or a coupling-off group; and

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

Disclosed are contrast agents of the formula ##STR1## contained in aqueous compositions and methods for their use in diagnostic radiology of the gastrointestinal tract wherein

Compositions of iodophenoxy alkanes and iodophenyl ethers for

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

Compounds having the structure ##STR1## wherein Z--COO).sub.m is the residue of a polyiodinated aromatic acid; m is 1, 2, 3 or 4; n is an integer from 1 to 20; R.sup.1 and R.sup.2 are independently H, alkyl, fluoroalkyl, cycloalkyl, aryl, aralkyl, alkoxy or aryloxy; R.sup.3 and R.sup.4 are independently H, alkyl, fluoroalkyl, cycloalkyl, aryl, aralkyl, alkoxy, aryloxy, halogen, hydroxy or acylamino; and R.sup.5 is H, alkyl, cycloalkyl, aryl, aralkyl, alkoxyalkyl or acetamidoalkyl; are useful as contrast agents in x-ray imaging compositions and methods.

Polyiodinated aroyloxy esters

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

Disclosed are x-ray contrast compositions for oral or retrograde examination of the gastrointestinal tract comprising a polymeric material capable of forming a coating on the gastrointestinal tract and an x-ray producing agent of the formula ##STR1## and methods for their use in diagnostic radiology of the gastrointestinal tract wherein

Growing community of inventors

Fairport, NY, United States of America

Paul P Spara