Eastman-kodak Company

Other

Edward D Morrison

Gerald M Leszyk

Chen-i Lu

Louis P Harasta

Carl Peter Novak

Michael Alan Marcus

Harry J Krall

Robert Franklin Williams, Jr

David L Carr

There is disclosed a laminate comprising alternating polymer sheets and metal layers between the polymer sheets, the laminate being substantially free of adhesive. Each polymer sheet of the laminate has a thickness not exceeding about 25 .mu.m, and the resistivity of the metal layer is from 1 to about 4 ohms/square. Such laminates are useful in making capacitors and piezoelectric multimorphs. A method of making such laminates is also disclosed, wherein a plurality of metal-coated polymer sheets are compressed, in the absence of an adhesive, under pressure sufficient to reduce the thickness of each of the polymeric film layers to a value that is no larger than about 25 .mu.m.

Multilayer thin film electrical devices free of adhesive

Curable coating compositions useful for protective treatment of elements bearing electrographically-formed toner images are comprised of (a) either (i) a mixture of a siloxy-containing polycarbinol and an acrylated urethane, or (ii) a siloxy-containing acrylated urethane; (b) a multifunctional acrylate; and, optionally (c) a free radical photoinitiator. Toner image-bearing elements, such as electrographic elements and specifically photoconductive recording films, can be provided with a protective overcoat layer which is bonded to the element and which serves to protect the toner image from abrasion and scratches. Such an overcoat layer is provided by coating the element with a curable composition and curing the resulting coating. The protective overcoat layer is applied to the toner image-bearing side of the element.

Radiation-curable overcoat compositions and toner-imaged elements

Radiation-curable compositions useful for restorative and/or protective treatment of photographic elements are comprised of a polymerizable epoxy compound, a cationic initiator for initiating polymerization of the epoxy compound, a polymerizable acrylic compound, a haloalkylated aromatic ketone which serves as a free-radical initiator for initiating polymerization of the acrylic compound, and a polymerizable organofunctional silane. Photographic elements, such as still films, motion picture films, paper prints, microfiche, and the like, are provided with a protective overcoat layer which is permanently bonded to the element, and serves to protect it from abrasion and scratches, by coating the element with the radiation-curable composition and irradiating the coating to bond it to the element and cure it to form a transparent, flexible, scratch-resistant, cross-linked polymeric layer. The protective overcoat layer can be applied to the image-bearing side of the element or to the support side of the element or to both sides. The radiation-curable composition can also be used as a restorative composition in the treatment of photographic elements which have scratches, abrasion marks, and the like, which impair the appearance or projection capabilities of the element. In use as a restorative composition, the radiation-curable composition can be applied locally in the region of the defects only, to effectively eliminate them and restore the element to a substantially defect-free condition, or it can be applied over the entire surface of the element to both eliminate the defects and form a protective overcoat layer that is capable of providing protection against subsequent scratching or abrasion.

Radiation-curable compositions for restorative and/or protective

An optical lens having an absorbance of less than about 0.1 for visible radiation of a wavelength in the range of from about 400 to about 600 nanometers is prepared from a crosslinkable acrylic composition. The composition consists essentially of an acrylic monomer and an acrylated urethane oligomer and exhibits a shrinkage upon curing of less than about 0.4%. The lens is prepared by introducing the crosslinkable composition into a lens-forming means and curing it until it is substantially crosslinked.

Optical lenses prepared from crosslinkable acrylic compositions

Photographic elements are provided with a magnetic stripe that is useful for sound recording by applying a magnetic striping composition, containing finely-divided magnetic particles and an acrylated epoxy resin, over the anti-halation layer of the element. The striping composition penetrates the anti-halation layer to contact the support and is cured to an alkali-insoluble cross-linked stripe which is composite with the anti-halation layer and strongly bonded to the support so as to resist removal by alkaline photographic processing solutions.

Photographic element provided with a magnetic recording stripe and

Photographic elements, such as still films, motion picture films, paper prints, microfiche, and the like, which have defects such as scratches, abrasion marks and the like, which impair the appearance or projection capabilities of the element are treated with a restorative composition which fills in the defects so as to effectively eliminate them and restore the element to a substantially defect-free condition. The restorative composition which is applied to the photographic element is a radiation-curable composition comprising an acrylated urethane, an aliphatic ethylenically-unsaturated carboxylic acid and a multifunctional acrylate. It is applied to the element, at least in the region of the defect being treated, and, is then subjected to radiation, such as, for example, ultraviolet light irradiation or high energy electron bombardment, sufficient to bond it to the element and cure it to a transparent, flexible, scratch-resistant, cross-linked polymeric material.

Method of treating scratched or abraded photographic elements with

Photographic elements, such as still films, motion picture films, paper prints, microfiche, and the like, are provided with a protective overcoat layer which is permanently bonded to the element and serves to protect it from abrasion and scratches. The protective overcoat is formed by coating the element with a radiation-curable composition, comprising an acrylated urethane, an aliphatic ethylenically-unsaturated carboxylic acid and a multifunctional acrylate, and irradiating the coating to bond it to the element and cure it to form a transparent, flexible, scratch-resistant, cross-linked polymeric layer. Protective overcoat layers can be applied to the image-bearing side of the element or to the support side of the element or to both sides.

Photographic elements coated with protective overcoats

Silver in compound form, usually silver sulfide, is precipitated from a solution containing other silver compounds, such as the complex silver thiosulfate compounds in photographic fix and bleach-fix solutions, by subjecting such a solution to radiation having an energy level of at least 4 electronvolts. The solution as received, or diluted only with water, is irradiated without adding other chemicals such as acid or alkaline compounds to change the normal pH. Ultraviolet light and high energy electrons are preferred. Penetration of the UV light or high energy electrons is improved by recycling a flowing stream and/or agitating solution.

Recovering silver compounds from solutions containing other silver

Thin plastic parts which can have precise tolerances and can be of complex shape are prepared by casting a viscous radiation-curable composition onto a support, such as a moving web of polymeric material, in the shape of the desired part and then irradiating, for example with ultraviolet radiation or high energy electrons, to cause curing of the composition to a solid plastic. The radiation-curable composition is formulated with viscosity and flow characteristics which enable it to be cast in the exact shape of the part desired yet retain this shape during curing while supported only by the surface on which it has been cast. Plastic parts made by this method can be formed entirely of the radiation-curable composition by casting onto a web having a release surface from which the part can be stripped subsequent to curing or can be formed partially from a web material and partially from the radiation-curable composition by casting onto a web to which the composition will bond and subsequently cutting the web into discrete portions which include the cured composition.

Growing community of inventors

Rochester, NY, United States of America

Edward D Morrison