Loading patent…
AssigneeEastman Kodak Company
InventorsLouis P. Harasta, Gerald M. Leszyk, Edward D. Morrison
Estimating the term…
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.
A radiation-curable coating composition comprising:
A radiation-curable coating composition comprising:
A radiation-curable coating composition comprising:
A photographic element comprising:
A photographic element comprising:
A photographic element comprising:
A photographic element comprising:
A photographic element comprising
An element comprising a photographic support and a protective overcoat layer, said protective overcoat layer having been formed by (a) coating said element with a radiation-curable coating composition which forms a transparent, flexible, scratch-resistant, cross-linked polymeric layer upon radiation curing, said coating composition comprising (1) a polymerizable epoxy compound, (2) a cationic initiator for initiating polymerization of said epoxy compound, (3) a polymerizable acrylic compound, (4) a free-radical initiator for initiating polymerization of said acrylic compound, said free-radical initiator comprising a haloalkylated aromatic ketone, and (5) a polymerizable organofunctional silane, and (b) subjecting said coating to radiation sufficient to cure said coating and bond it to said element.
A method of protecting a photographic element against abrasion and scratches which comprises (a) coating at least one side of said element with a radiation-curable coating composition comprising (1) a polymerizable epoxy compound, (2) a cationic intiator for initiating polymerization of said epoxy compound, (3) a polymerizable acrylic compound, (4) a free-radical initiator for initiating polymerization of said acrylic compound, said free-radical initiator comprising a haloalkylated aromatic ketone, and (5) a polymerizable organofunctional silane, and (b) subjecting said coating to radiation sufficient to cure said coating and bond it to said element.
A method for protecting a photographic element against abrasion and scratches which comprises (a) coating both sides of said element with a radiation-curable coating composition comprising (1) a polymerizable epoxy compound, (2) a cationic initiator for initiating polymerization of said epoxy compound, (3) a polymerizable acrylic compound, (4) a free-radical initiator for initiating polymerization of said acrylic compound, said free-radical initiator comprising a haloalkylated aromatic ketone, and (5) a polymerizable organofunctional silane, and (b) subjecting each said coating to radiation sufficient to cure it and bond it to the side of the element on which it is coated.
A method of treating a photographic element comprising a support and at least one image-bearing layer, said element having defects such as scratches, abrasion marks and the like on one or both sides thereof which impair the appearance or projection capabilities of said element, which method comprises (a) applying to said element, at least in the region of said element in which said defects are located, a radiation-curable composition which fills in said defects and forms a transparent, flexible, scratch-resistant, cross-linked polymeric material upon radiation curing, said composition comprising (1) a polymerizable epoxy compound, (2) a cationic initiator for initiating polymerization of said epoxy compound, (3) a polymerizable acrylic compound, (4) a free-radical initiator for initiating polymerization of said acrylic compound, said free-radical initiator comprising a haloalkylated aromatic ketone, and (5) a polymerizable organofunctional silane, and (b) subjecting said composition to radiation sufficient to cure it and bond it to said element, whereby the adverse effects of said defects on the appearance or projection capabilities of said element are reduced or eliminated.
A method of treating a photographic motion picture film comprising a poly(ethylene terephthalate) support and at least one imagewise-exposed and processed gelatino/silver halide emulsion layer, said film having scratches in said support which impair its projection capabilities, which method comprises (a) coating said support with a radiation-curable composition which fills in said scratches and forms a transparent, flexible, scratch-resistant, cross-linked polymeric layer upon radiation curing, said composition comprising (1) a polymerizable epoxy compound, (2) a cationic initiator for initiating polymerization of said epoxy compound, (3) a polymerizable acrylic compound, (4) a free-radical initiator for initiating polymerization of said acrylic compound, said free-radical initiator comprising a haloalkylated aromatic ketone, and (5) a polymerizable organofunctional silane and (b) subjecting said coating to radiation sufficient to cure it and bond it to said support, whereby the adverse effects of said scratches on the projection capabilities of said film are reduced or eliminated.
A method of treating a photographic motion picture film comprising a cellulose triacetate support and at least one imagewise-exposed and processed gelatino/silver halide emulsion layer, said film having scratches in said support which impair its projection capabilities, which method comprises (a) coating said support with a radiation-curable composition which fills in said scratches and forms a transparent, flexible, scratch-resistant, cross-linked polymeric layer upon radiation curing, said composition comprising (1) a polymerizable epoxy compound, (2) a cationic initiator for initiating polymerization of said epoxy compound, (3) a polymerizable acrylic compound, (4) a free-radical initiator for initiating polymerization of said acrylic compound, said free-radical initiator comprising a haloalkylated aromatic ketone, and (5) a polymerizable organofunctional silane and (b) subjecting said coating to radiation sufficient to cure it and bond it to said support, whereby the adverse effects of said scratches on the projection capabilities of said film are reduced or eliminated.
Dependencies are inferred from the claim text.