E.i. Dupont De Nemours and Company

Richard P Pankratz

Bernard Feinberg

Fredrick Claus Zumsteg, Jr

Robert William Eveson

Ray A Work, Iii

Thomas C Felder

Moira Logan

James R Joiner

Christopher Ferguson

Clifford Cheng-Shiou Chang

Marc Bandman

A donor element useful in an assemblage for imaging by exposure to light comprises a support layer, a light-to-heat conversion layer disposed adjacent the support layer containing a light absorber, and a transfer layer disposed adjacent the light-to-heat conversion layer opposite the support layer. The donor element also includes a release-modifier disposed between the support layer and the transfer layer.

Donor element with release-modifier for thermal transfer

A donor element useful in an assemblage for imaging by exposure to light comprises a support layer formed by a stretching process, a light-to-heat conversion layer disposed adjacent the support layer containing a light absorber, and a transfer layer disposed adjacent the light-to-heat conversion layer opposite the support layer. The light-to-heat conversion layer is coated on the support prior to completion of the stretching process.

Donor element for thermal transfer

This invention covers a film base wherein polymers forming a polymeric film surface and selected from polyesters, polyolefins and polyamides are coated with an adhesion enhancing primer coating containing (a) a functionalized .alpha.-olefin containing copolymer; and (b) a crosslinking agent selected from the group consisting of amino formaldehyde resins, polyvalent metal salts, isocyanates, blocked isocyanates, epoxy resins and polyfunctional aziridines; and wherein the adhesion enhancing primer coating is applied to the polymeric film surface and reacted, at elevated temperatures with newly generated polymeric film surfaces formed during uniaxial or biaxial stretching and heat setting.

Primed polymer films having improved adhesion characteristics and

A photosensitive element comprising (a) a support, (b) a thermally hardened layer containing the reaction product of (i) either an organic polymer having reactive segments and nonreactive segments or a blend of organic polymers wherein at least one polymer has reactive segments and at least one polymer has nonreactive segments (ii) a crosslinking agent and (iii) a catalyst and (c) a photohardenable layer is described.

Photosensitive element having support with adjustable adhesion

A release film comprising in order (a) a polymeric film substrate, (b) a layer containing an organic polymer having reactive segments and polysiloxane segments; and (c) a silicone release layer wherein the adhesion of the silicone release layer to the substrate is improved is described.

Polymeric release film

A polyolefin coating provides slip and antiblock properties to a multilayer, peel-apart photosensitive element.

Polyolefin backside coating for photosensitive reproduction element

A crystalline polyester film or sheet coated with a priming composition consisting essentially of a carboxyl group-containing copolyester, wherein the carboxyl groups are introduced either by treatment of the terminal hydroxyl groups of the copolyester with a dicarboxylic acid anhydride or by pyrolysis of the copolyester. Such primer compositions form continuous wet films and dry coatings and provide surfaces receptive to a variety of surface finishes such as further polymer coatings and inks. Further, the primer-coated polyester can be recycled and can be used in applications where the coating is in contact with food articles.

Adherable polyster film

A crystalline polyester film or sheet coated with a primer composition consisting essentially of a carboxylated polyurethane, wherein the carboxyl groups are introduced by esterifying the terminal hydroxyl groups and amidizing any terminal amine groups of the polyurethane with a dicarboxylic acid anhydride. Such primer compositions form continuous wet films and dry coatings and provide surfaces receptive to a variety of surface finishes such as further polymer coatings and inks.

Adherable polyester film

To improve adhesion of a hydrophilic photographic emulsion to a hydrophobic polyester film base the latter is pretreated by electrical discharge, flame or chemical treatment, and then given a sub-coating composed of an aqueous dispersion of gelatin, a water-soluble polyester, and a polyfunctional aziridine crosslinking agent, and this coating is then thermally cured.

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Circleville, OH, United States of America

Richard P Pankratz