Eastman-kodak Company

Dwight W Schwark

Yongcai Wang

Robert J Kress

Charles Chester Anderson

Debasis Majumdar

Janglin Chen

Thomas N Blanton

James Lee Bello

Alfred B Fant

The invention relates to an imaging member comprising a substrate and an image layer comprising smectite clay particles intercalated with polyvinyl pyrrolidone and dispersed in polyethylene oxide.

Image layer comprising intercalated clay particles

The invention relates to a method of forming a polymer composite comprising mixing smectite clay and polyvinyl pyrrolidone to form a first dispersion of intercalated clay, mixing said dispersion with polyethylene oxide to form a second dispersion, flowing said second dispersion into ketone so as to flocculate a polymer composite of polyethylene oxide and intercalated clay and recovering said flocculate, wherein the polyethylene oxide is rendered to reduced crystallinity.

Reduced crystallinity polyethylene oxide with intercalated clay

A coating composition comprising a solution of an electrically-conductive polymer and an organic solvent media wherein the solvents are selected from the group consisting of alcohols, ketones, cycloalkanes, arenes, esters, glycol ethers and their mixtures; the media having a water content of less than 12 weight percent. Such a coating composition provides a means to protect an imaging element against the accumulation of static electrical charges before and after image processing while also providing the element with improved manufacturability and physical properties.

Coating composition containing electrically-conductive polymer and solvent mixture

The present invention relates to a polymer particle having a wax phase and a second phase. The wax phase includes a wax having a melting point of greater than 30&deg; C. and comprising greater than 80% by weight of the wax phase. The second phase, free of ionic charge groups, includes a mono-alpha, beta-ethylenically unsaturated monomer free of ionic charge groups capable of addition polymerization to form a water soluble homopolymer including from 1 to 40% by weight of the second phase and a mono-alpha, beta-ethylenically unsaturated monomer capable of addition polymerization to form a water insoluble homopolymer.

Non-aqueous composite wax particle dispersion

The present invention is an imaging element which includes a support, an image forming layer superposed on the support; and at least one layer superposed on the support. The at least one layer superposed on the support is formed from a non-aqueous coating composition of a composite wax particle composed of a wax phase and a non-crosslinked polymer phase and an organic solvent. The wax phase includes a wax having a melting point of greater than 30&deg; C. The wax comprises greater than 80% by weight of the wax phase. The wax phase to non-crosslinked polymer phase ratio is greater than 30/70 and less than 90/10.

Imaging elements

The present invention is an imaging element which includes a support, an image forming layer superposed on the support and at least one layer superposed on the support. The at least one layer is formed from a non-aqueous coating composition composed of a composite wax particle having a wax phase and a non-crosslinked polymer phase. The wax phase includes a wax having a melting point of greater than 30&deg; C., the wax comprising greater than 80% by weight of the wax phase. The at least one layer has a dry coating weight of from 1 to 300 mg/m,.

Imaging element

Imaging elements containing an electrically-conductive layer comprising

A photographic element which includes a support having a frontside and a backside, at least one silver halide emulsion layer superposed on the frontside of the support; and a protective overcoat layer superposed on the backside of the support. The protective overcoat layer is formed from a coating solution comprising a continuous liquid organic medium having therein a mixture of dispersed core/shell polymer particles and a soluble polymer. The core/shell polymer particles comprise a core portion, which is insoluble in the organic medium, and a shell portion which has an affinity for both the core portion and the organic medium and has an acid number of from 25 to 200. The soluble polymer has an acid number of from 70 to 500 and the acid number of the soluble polymer is greater than the acid number of the shell of the core/shell polymer particles.

Backside protective overcoat compositions for silver halide photographic

The present invention is an imaging element which includes a support, at least one imaging layer superposed on the support and an antistatic layer superposed on the support. The antistatic layer is composed of a wax particle having a wax phase and a polymer phase, the polymer phase formed from an ethylenically unsaturated monomer free of ionic charge groups capable of forming a water soluble homopolymer and a second ethylenically unsaturated monomer capable of forming a water insoluble homopolymer, and an antistatic agent having an ionic group.

Antistatic layer coating compositions

The present invention is an imaging element which contains a support, an image forming layer superposed on the support and an outermost protective layer superposed on the support. The protective layer is a cellulosic material and a composite wax particle. The wax particle is composed of a wax phase and a non-crosslinked polymer phase. The wax phase includes a wax having a melting point of greater than 30.degree. C. The non-crosslinked polymer phase contains from 10% to 80% by weight of a mono-alpha, beta-ethylenically unsaturated monomer capable of addition polymerization to form a water soluble homopolymer. In a preferred embodiment the protective layer overlies an antistatic layer.

Protective overcoat coating compositions

The present invention is a photographic element which includes a support having a frontside and a backside, at least one silver halide emulsion layer superposed on the frontside of the support; and a protective overcoat layer superposed on the backside of the support. The protective overcoat layer is a mixture of a first vinyl polymer having an acid number of from 5 to 100 and a second vinyl polymer having an acid number of from 70 to 250 wherein the acid number of the second polymer is greater than the acid number of the first polymer.

The present invention is an imaging element which includes a support, an image forming layer superposed on the support, and an electrically conducting layer. The electrically conducting includes smectite clay at a weight percent of from 5 to 95% and an interpolymer of vinylidene halide at a weight percent of from 95 to 5%.

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Greenville, SC, United States of America

Dwight W Schwark