Abstract: A composition comprising one or more radiation curable monomers and/or oligomers and one or heat stable composition comprising at least one radiation-curable alpha, beta-ethylenically unsaturated compound, at least one phenolic stabilizer, and at least one non-phenolic stabilizer selected from the group consisting of hydroperoxide decomposers and free radical traps. The compositions and methods are useful in applications such as radiation curable ink jet systems where viscosity is reduced by heating.

Abstract: A photocurable ink for ink-jet printing, including: a photopolymerizable compound; a pigment; and a dispersing agent, wherein the photopolymerizable compound is a radical polymerizable compound; an amine value of the pigment (AMp) is larger than an acid value of the pigment (ACp); and an acid value of the dispersing agent (ACd) is larger than an amine value of the dispersing agent (AMd).

Abstract: An inkjet ink capable of undergoing polymerization (curing) after exposure to microwave radiation, and method for printing and fixation the above ink on various substrates by ink jet printer and microwave source is disclosed. Ink compositions suitable for microwave curing are provided. These inks overcome the problems associated with drying of solvent and water based inks, and curing of UV inks. The present invention provides also a method for quick fixation of inks in which the ink vehicle is composed of molecules having appropriate dielectric properties.

Abstract: An ultraviolet (UV) light curable formulation useful for repairing composite materials, comprising: an acrylic oligomer, an acrylic monomer, and a photoinitiator. This formulation may include fiberglass. The photoinitiator can be a combination of a bis-acylphosphine oxide and an alpha hydroxy ketone. The formulation can cure rapidly, such as in about 20 minutes. The cured formulation can have a Tg above 150° C.

Abstract: A process for producing intraocular lenses (IOLs) capable of absorbing blue light and ultraviolet light using photo curing. Intraocular lenses so produced block blue light and ultraviolet light from reaching the retina of an eye implanted with the IOL. By blocking blue light and ultraviolet light from reaching the retina, the IOL thereby prevents potential damage to the retina.

Abstract: An ultraviolet (UV) light curable formulation useful for repairing composite materials, comprising: an acrylic oligomer, an acrylic monomer, and a photoinitiator. This formulation may include fiberglass. The photoinitiator can be a combination of a bis-acylphosphine oxide and an alpha hydroxy ketone. The formulation can cure rapidly, such as in about 20 minutes. The cured formulation can have a Tg above 150° C.

Abstract: This invention relates generally to compositions and systems for forming biomaterials containing a transient colorant for visualizing tissue or surgical materials coated with such biomaterials, to methods of using such compositions as bioadhesives, for tissue augmentation, in the prevention of surgical adhesions, for coating surfaces of synthetic implants, as drug delivery matrices, for ophthalmic applications, and in other applications.

Abstract: A lithographic ink composition that comprises a colorant having absorbency wavelength cutoffs of about 300 nm or longer, acrylate-functional materials, and a photoinitiator that absorbs at a wavelength of 300 nm or longer is formulated with a mileage of from about 1.1 to about 1.3 grams per square meter or to reach a desired print density at 2 microns or less print layer thickness. The lithographic ink cures faster and can be printed at a faster rate, particularly when curing is to be done with an excimer light source.

Abstract: To provide a radiation-curable ink composition that can form a high-quality image on not only liquid absorbing materials to be recorded but also non-liquid absorbing materials to be recorded, is superior in curing properties in air, and is superior in storage stability, color tone, light fastness and water resistance of ink, and also to provide an image recording method. The radiation-curable ink composition comprises a monomer having a polymerizable group selected from the group consisting of an acryloyl group, a methacryloyl group, an allyl group, and a vinyl group, an oil-soluble dye, and from 0.005 to 1% by weight of a storage stabilizer, wherein the oil-soluble dye is dissolved in the ink.

Abstract: Disclosed are environmentally friendly, substantially all solids coating compositions which are curable using ultraviolet and visible radiation. In addition, the disclosed coating compositions are suitable for coating flexible objects and/or objects having angular features, such as, but not limited to, flexible metal objects with angular features. In addition, methods are disclosed for coating surfaces, or at least a portion of the surfaces, and curing of the coated surface to obtain partially or fully cured coated surfaces. Furthermore, articles of manufacture incorporating fully cured coated surfaces are disclosed, including, for example leaf springs. Also disclosed are methods, processes, production lines, articles of manufacture, and factories which incorporate these environmentally friendly, substantially all solids coating compositions curable using ultraviolet and visible radiation.

Abstract: Methods for making composite flakes are disclosed. The composite flakes are formed from particles and one or more monomers and/or resins or resin systems. The polymer matrix of the flakes is highly crosslinked and/or high molecular weight. Use of the particles in powder coatings is also disclosed.

Abstract: A curable ink for jet-ink recording comprising a white pigment and a polymerizable compound, wherein the polymerizable compound is a compound selected from the group consisting of: (a) oxetane compounds; (b) pyrrole or substituted pyrroles; (c) aniline or substituted anilines; and (d) thiophene or an substituted thiophenes, provided that when the polymerizable compound is the oxetane compound, the curable ink further comprises an epoxy compound or a vinyl ether compound.

Abstract: A prosthetic medical device exhibiting improved wear resistance is fabricated by sealing at least one polyolefinic material in an airtight container and providing an inert atmosphere within the airtight container. The polyolefinic material is exposed to an irradiation source to yield a cross-linked irradiated polyolefinic material. At least one non-irradiated polyolefinic material is blended with the irradiated polyolefinic material, and the prosthetic medical device is formed from the blended material. Selectively cross-linked polymeric compositions may be created by blending a specific amount of cross-linked resins with a specific amount of uncross-linked resins then cured into a polymeric matrix whereby the desired degree or percentage of overall cross-linking is obtained. The polymeric material may then be formed directly into a finished article by injection molding the polymeric material.

Abstract: A method of preparing fiber sheet molding compounds with a fabric of continuous fiber reinforcement that can be molded under low pressures and temperatures to provide thermoset articles, wherein liquid reactive components are slowly absorbed in solid acrylic resin. The acrylic resin functions as a thickener which delays the viscosity build allowing the fabric of continuous fiber reinforcement to be incorporated before molding.

Abstract: A method of increasing the gas transmission rate of a packaging film comprises providing a packaging film that comprises at least about 0.001 weight % of single-walled carbon nanotube material based on the weight of the film. The packaging film is exposed to an amount of radiation energy effective to increase the oxygen transmission rate of the packaging film by at least about 100 cc (STP)/m2. day (1 atm, 0% RH, 23° C.).

Abstract: A process for preparing pressure sensitive adhesives based on acrylate hotmelt, in which a monomer mixture including at least the following monomers (a) 70 to 100% by weight of compounds from the group of (meth)acrylic acid and the derivatives thereof corresponding to the following general formula is free-radically polymerized in solution wherein I. the polymerization is initiated using at least one dissociating photoinitiator and by irradiation with ultraviolet light, the photoinitiator being added to the monomer mixture before the beginning of the polymerization and/or to the reaction mixture in the course of the polymerization, II. the polyacrylate is freed from the solvent, III. the polyacrylate is processed further in the melt.

Abstract: Disclosed is an actinic ray curable ink-jet ink comprising a an epoxy compound having at least two oxirane rings and a linkage chain linking the two oxirane rings, wherein the linkage chain has a branched structure.

Abstract: The invention is a radiation curable coating containing an antimicrobial agent, where upon irradiation with UV light, the radiation curable coating rapidly cures to a polymeric coating. The polymeric coating has durable antimicrobial properties, being especially effective at preventing the growth of Staphylococcus aureaus and Kleibsella pneumoniae on wood flooring and furniture. The major components in the radiation curable coating are a urethane acrylic oligomer, a radiation cure package, an antimicrobial agent, a cross-linking agent, and optionally, an additive package. The radiation curable urethane oligomer is a relatively short chain backbone urethane polymer that is end capped with a radiation curable moiety, where the moiety is an acrylic. The cross-linking agent is one or more monomers used to lower the viscosity and promote cross-linking, and include acrylate esters of mono-, di-, tri-, or tetrafunctional alcohols. The radiation cure package contains at least one photoinitiator.

Abstract: A radiation-curable fiber optic coating composition for an inner primary coating includes a coloring agent, preferably a dye or a dye precursor, compatible with the fiber of the fiber optic and capable of imparting a pre-selected color to the inner primary coating, or another coating. The coloring agent can be a reactive dye. Any of the dyes preferably is stabilized by a stabilizer in the colored coating layer, or, preferably, in a more exterior layer.

Abstract: A radiation-curable ink jet ink can be formulated with less than 20% by weight of monofunctional monomer by dispersing the pigment or pigments with an acrylated epoxy resin having an average of from about 1.6 to about 2.0 functional groups per molecule, a number average molecular weight of from about 350 to about 600, and a glass transition temperature of from about ?20° C. to about +25° C.

Abstract: A photosensitive resin composition which contains (A) polyamic acid, (B) (meth)acrylate having at least two photopolymerizable C?C unsaturated double bonds, (C) a photopolymerization initiator and (D) a flame retardant, with the (meth)acrylate (B) having at least two photopolymerizable C?C unsaturated double bonds being contained in an amount of 10 to 700 parts by weight based on 100 parts by weight of the polyamic acid (A).

Abstract: A photo-polymerizable ink-jet ink composition comprises a photo-polymerizable resin consisting of photo-polymerizable monomers, a photo-polymerization initiator, and a coloring material and is substantially free from a solvent. The photo-polymerizable monomers contain a hexa-functional monomer in a proportion falling within the range of 10% by weight to 30% by weight with respect to a total amount of the ink composition. The photo-polymerizable monomer other than the hexa-functional monomer is selected from the group consisting of a bi-functional monomer, a combination of a bi-functional monomer and a mono-functional monomer, a combination of a bi-functional monomer and a tri-functional monomer, and a combination of a bi-functional monomer, a mono-functional monomer, and a tri-functional monomer.

Abstract: A coating composition comprising (1) an anionic surfactant comprising a sulfonic acid salt, (2) a sol of fine inorganic oxide particles, (3) a silicon compound having one acryl or methacryl group and a hydrolyzable group or a product of hydrolysis of the compound, (4) a compound having at least two photopolymerizable unsaturated groups, and (5) a photopolymerization initiator; and a coated article obtained by applying the coating composition to a base and then photocuring the coating. The coated article combines antifogging properties with abrasion resistance sufficient for practical use.

Abstract: A photocurable composition is provided which yields an excellent tack-free, hard cured product without any addition of photoinitiators. A photocurable composition which is excellent in storage stability is also provided. The photocurable composition contains a resin having an acryloyl group and a chemical structure element selected from the group consisting of ?-diketone groups and ?-ketoester groups, wherein the ?-diketone group or the ?-ketoester group has a tetra-substituted carbon atom between two carbonyl groups, which is capable of generating one or two free radicals under photoirradiation, and the photocurable composition does not increase more than 25% in viscosity when heated at 60° C. for 5 days.

Abstract: The present invention discloses a method for fabricating an electroluminescent lamp that includes a step in which an electroluminescent active layer is formed by curing a UV curable electroluminescent composition. Embodiments of the method of the present invention in which each layer of a multilayer electroluminescent device are fabricated from UV curable compositions are also disclosed. A UV curable dielectric composition suitable for utilization in an electroluminescent lamp is also provided.

Abstract: A prosthetic medical device exhibiting improved wear resistance is fabricated by irradiating at least one polyolefinic material in the presence of an inert atmosphere to yield a cross-linked irradiated polyolefinic material; blending at least one non-irradiated polyolefinic material with the at least one irradiated polyolefinic material, and forming the prosthetic medical device from the blended material. Selectively cross-linked polymeric compositions may be created by blending a specific amount of cross-linked resins with a specific amount of uncross-linked resins then cured into a polymeric matrix whereby the desired degree or percentage of overall cross-linking is obtained. The polymeric material may then be formed directly into a finished article by injection molding the polymeric material.

Abstract: Irradiated, oxidized olefin polymer coupling agents for use in the manufacture of non-halogenated flame retardant-containing and filler-containing olefin polymer compositions and coupling agent-containing olefin polymer concentrates.

Abstract: An in situ polymer microstructure formation method. The monomer mixture is polymerized in a solvent/precipitant through exposure to ionizing radiation in the absence any chemical mediators. If an exposure mask is employed to block out certain regions of the radiation cross section, then a patterned microstructure is formed. The polymerization mechanism is based on the so-called free-radical retrograde-precipitation polymerization process, in which polymerization occurs while the system is phase separating above the lower critical solution temperature. This method was extended to produce a crosslinked line grid-pattern of poly (N-isopropylacrylamide), which has been known to have thermoreversible properties.

Abstract: Methods of forming crosslinked polymer particles in situ from polymer precursors such as monomers or oligomers, comprising exposing a composition comprising at least one polymer precursor, a solvent or solvent mixture, and an antisolvent or antisolvent mixture to photoradiation under conditions whereby particles are formed are provided. The polymer precursor may be photosensitive, or a separate polymerization initiator may be used. In a preferred embodiment, the polymer precursor is insoluble in the antisolvent or antisolvent mixture and the solvent or solvent mixture is soluble in the antisolvent or antisolvent mixture at the concentrations used. Crosslinked polymer particles and crosslinked polymer particles comprising a polymer and a bioactive material are also provided. The polymer may be erodable, and the polymer particles formed may be used in a variety of applications, including controlled release of bioactive materials such as drugs.

Abstract: The disclosure relates to the provision of a lens having front and back optical surfaces bound by a peripheral edge, wherein the peripheral edge is coated with an edge coating that strongly bonds to the edge but that only weakly bonds to the optical surface, and wherein the edge coating is durable. A method of coating and a composition are also disclosed. The composition is preferably selected from a limited group of UV curable acrylates.

Abstract: A composition for a bulkhead of a thin display panel which is a mixed composition comprising a powder of glass or ceramic for molding a bulkhead of a thin display panel or a part thereof and a binder being an organic additive, wherein the above organic additive contains 15 to 50% by weight of a resin composition which generates heat energy by irradiation with an energy ray and which can be cured by energy coming from an energy ray source or the resulting heat energy. To provide a composition for a bulkhead which is used for molding a bulkhead constituting a discharge display cell of a thin display panel or mending a broken part thereof and which is improved in curability.

Abstract: A radiation curable, flexible, paintable composition produced from epoxy compounds and one or more polyol(s) has enhanced durability, thick and thin film adhesion, resistance to mold growth and dimensional changes while reducing solvent emissions. The composition can reduce, if not eliminate, runs and drips during the thermal bake cycles which are associated with using conventional compositions in automotive applications.

Abstract: The present invention provides radiation-curable compositions and products coated therewith, such as coated optical fibers. The present compositions have a low amount of, or are even absent of, reactive diluents while still exhibiting a sufficiently low viscosity to be useful in a wide variety of coating applications, such as in processes for coating optical fibers.

Abstract: This invention provides for compositions, which can be crosslinked by radiation to give elastomeric coatings, which comprises: (a) high-molecular weight siloxanes with multiple (meth)acrylate functional groups; and (b) reinforcing fillers selected from the group consisting of silicone resins and silicone dioxide fillers, wherein the siloxanes (a) have the general structure: [R3SiO1/2]a[(Z)nG—Ym—R2SiO1/2]a?[R2SiO2/2]b[(Z)nG—Ym—RSiO2/2]b?[RSiO3/2]c[SiO4/2]d.

Abstract: A composition for ink-jet recording is provided. The composition comprises a water miscible resin and a water-soluble ultraviolet curable humectant. The concentration of the water-soluble ultraviolet curable humectant may be in the range of 5% to 50% by weight. Examples of such humectants may include polyalkylen glycol acrylates, polyethers acrylates, and highly ethoxylated derivatives of acrylates.

Abstract: A photocurable primer composition containing (A) an acrylic resin having through an urethane linkage a polymerizable unsaturated group on its side chain and containing the polymerizable unsaturated group in an amount of 0.2 to 2.0 mol/kg in a solid content of the resin (A), (B) an urethane (meth)acrylate oligomer containing at least one polymerizable unsaturated group in one molecule, and (E) a photopolymerization initiator, and a coating method.

Abstract: In accordance with the present invention, there are provided novel thermosetting resin compositions which do not require solvent to provide a system having suitable viscosity for convenient handling. Invention compositions have the benefit of undergoing rapid cure. The resulting thermosets are stable to elevated temperatures, are highly flexible, have low moisture uptake and are consequently useful in a variety of applications, e.g., in adhesive applications since they display good adhesion to both the substrate and the device attached thereto.

Abstract: A dental adhesive composition for bonding dental restoratives to dentin and enamel provides a one-part self-etching, self-priming dental adhesive composition having hydrolysis stable polymerizable acidic adhesive monomers.

Abstract: An useful aqueous photocurable resin composition is provided. The aqueous photocurable resin composition of the present invention comprises at least water, a polymerizable material polymerizable with radical initiation and a water-soluble photopolymerization initiator which generates a radical with light, wherein the polymerizable material has at least two polymerizable functional groups and one anionic functional group.

Abstract: The invention relates to thermoplastic polyolefin compositions having enhanced surface durability and products thereof which include a thermoplastic polyolefin base component at least one radiation-crosslinkable component present in an amount sufficient to enhance the surface durability of the thermoplastic polyolefin component when radiation-cured and at least one photoinitiator present in an amount sufficient to initiate crosslinking of the radiation-crosslinkable component upon exposure of the thermoplastic polyolefin composition to radiation.

Abstract: An intaglio printing ink comprising a first binder compound selected from the group of water-soluble or water-thinnable acrylate oligomers, and optionally, a second monomeric binder compound selected from the group comprising water-soluble or water-thinnable PEG diacrylate or polyethoxylated polyol triacrylate monomers to adjust the viscosity of the ink composition. To initiate polymerization of the binder compounds upon irradiation by electromagnetic radiation or electron beam radiation a photoinitiator is included. Further optional additives, such as pigments, fillers, photosensitizers, stabilizers emulsifiers and security pigments may be present. The ink shows excellent wipeability and allows precipitation from the wiping solution.

Abstract: A liquid colored radiation-curable composition that comprises:

Abstract: Dental bonding compositions and methods for promoting adhesion of an amalgam-based restorative material to a dental substrate. The inventive compositions include one or more polymerizable resins that are able to adhere to a dental substrate when at least partially polymerized, one or more polymerization photoinitiators in an amount so as to result in partial polymerization of the resin when the compositions are irradiated with radiant energy, and one or more chemical initiators (e.g., benzoyl peroxide) that cause further polymerization of the resin when the composition is contacted with an amalgam restorative. A bonding composition applied to a dental substrate and irradiated with radiant energy is more polymerized in a region adjacent to the dental substrate, while a less polymerized inhibition layer forms in the region of the surface. Packing an uncured amalgam into the dental preparation mechanically disrupts the inhibition layer so as to form peaks, troughs and other irregularities.

Abstract: The present invention involves the use of powder coating methods to form coated abrasives. In one embodiment, the powder is in the form of a multiplicity of binder precursor particles comprising a radiation curable component. In other embodiments, the powder comprises at least one metal salt of a fatty acid and optionally an organic component that may be a thermoplastic macromolecule, a radiation curable component, and/or a thermally curable macromolecule. In either embodiment, the powder exists as a solid under the desired dry coating conditions, but is easily melted at relatively low temperatures and then solidified also at reasonably low processing temperatures. The principles of the present invention can be applied to form make coats, size coats, and/or supersize coats, as desired.

Abstract: The invention relates to an intrinsically viscous powder-slurry that can hardened by actinic radiation or optionally by thermal means, which contains solid spherical particles with an average particle size of 0.8 to 20 &mgr;m and a maximum particle size of 30 &mgr;m. The clear powder coating slurry contains 0.05 to 1 meq/g of ion-forming groups and 0.05 to 1 meq/g of neutralizing agents and has a viscosity of (i) 50 to 1000 mPas at a shear rate of 1000 s−1, (ii) 150 to 8000 mPas at a shear rate of 10 s−1, and (iii) from 180 to 12000 mPas at a shear rate of 1 s−1.

Abstract: Radiation curable inks with moderate amounts of solvent with low surface tension provide unique processability characteristics that allow ink jetted features to be formed and cured with excellent flow, adhesion, dot gain, compatibility, weatherability, and curing characteristics. In a representative printing method, an ink jettable ink composition is provided that includes one or more oligo/resins, a radiation curable, reactive diluent having a surface tension and 1 to 15 weight percent of a solvent component comprising a solvent having a surface tension. The solvent surface tension is no more than about, and preferably at least 2 dynes/cm less than, the surface tension of the reactive diluent. The ink composition is ink jetted onto the substrate to form an ink jetted feature.

Abstract: A golf ball printing ink is provided which ensures a sufficient pot life, requires a shortened drying time after printing, and yields a mark having a clear appearance and superior durability. Also provided are a printing method using the ink, a golf ball bearing a mark printed with the ink, and a method of manufacturing a golf ball. The golf ball printing ink includes a solvent, a resin in a solid state at ordinary temperature or a reactive curing resin which is curable through reaction with a curing agent, and an ultraviolet-curing resin. The method of manufacturing a golf ball includes the steps of: printing a mark on a surface of a golf ball body with use of the ink; irradiating the mark with ultraviolet ray after the printing; and applying a clear paint to the golf ball body after the ultraviolet ray irradiation.

Abstract: The invention relates to dental materials which contain filler and a polymerizable matrix and are characterized in that they additionally have a component which contracts during thermal treatment.

Abstract: Dental composites containing hybrid fillers and process for their production. Dental compounds are disclosed which contain two- or multi-phase inorganic fillers in an organic polymer matrix. These are characterized by improved abrasion resistance.

Abstract: Describes novel polyfunctional thiiranes. Also described are polymerizable compositions comprising such novel polyfunctional thiiranes, and polymerizates, e.g., optical lenses, prepared therefrom. The described polymerizates may have a refractive index of at least 1.6, and an Abbe number of at least 27.