Abstract: A water-dispersible, radiation-curable polyurethane composed essentially of

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: Disclosed is a UV-curable transfer ink which can be cured by UV and used to emboss a precise and clear pattern on a substrate. It comprises 20-40% by weight of a UV-reactive ink, 20-40% by weight of an acrylic copolymer, 4-6% by weight of an ethylene vinyl acetate copolymer, 25-35% by weight of an organic solvent and 0.5-5% by weight of a bulking agent. A printing sheet is also provided, on which the transfer ink is printed in a predetermined pattern. An embossed pattern is obtained by applying the sheet to a substrate, exposing it to UV to cure the printed transfer ink, releasing the printing sheet to leave the cured transfer ink on the substrate, and etching the substrate.

Abstract: The invention concerns a composition cross-linkable under radiation. The composition includes at least one polyorganosiloxane with cross-linkable functional groups, a stabilizing amino agent, and an initiator system for hardening under radiation. The composition is stable for use and storage.

Abstract: This invention relates to a copolymer for the manufacture of chemical amplified photoresist and a chemical amplified positive photoresist composition comprising a copolymer for the manufacture of chemical amplified photoresist as a base resin, as represented by the following formula 1, an acid generator and additive, Wherein, R1, R2, R3 and R4 are independently a hydrogen atom or a lower alkyl group; R5, R6, R7 and R8 are a hydrogen atom, an alkyl group of C1-8, an alkoxy group, an alkoxycarbonyl group or a halogen atom; h and i are independently an integer of 0-8; k, l, m and n represent an integer of element units provided that 0.3<k/(k+l+m+n)<0.9, 0≦l/(k+l+m+n)<0.6, 0≦m/(k+l+m+n)<0.6, and 0.01<n/(k+l+m+n)<0.

Abstract: A method for coating a textile includes applying a substantially water-free, energy-curable, polymer-forming composition to the textile and exposing the textile and composition to a source of energy under such conditions as to generate chemically active sites on the surface of the textile and polymerize the composition. The resulting polymer is grafted onto the textile. Preferably, the energy is derived from electron beam radiation. The composition includes an epoxy oligomer having at least two ethylenically unsaturated moieties, and at least one alkoxylated polyol monomer having at least two ethylenically unsaturated moieties and capable of being copolymerized with the epoxy oligomer. Preferably, the composition also includes a surface active agent capable of rendering the uncured composition dispersible in water. Optionally, the composition can contain a colorant, and photoinitiator. The composition is especially suitable for use as a screen printing ink and coating material for textiles.

Abstract: Disclosed herein is a game ball, such as a golf ball, having an indicia formed from a UV curable ink containing aluminum trihydroxide (ATH) filler. The ATH improves pad transfer of the ink. An ink composition suitable for pad printing, and a method for applying an indicia to a game ball also are disclosed. The UV curable ink has excellent pad transfer properties, and good durability.

Abstract: A UV curable, flexible, paintable composition is disclosed. The disclosed composition has enhanced durability, thick and thin film adhesion, resistance to mold growth and dimensional changes while reducing solvent emissions. The disclosed composition reduces, if not eliminates, runs and drips during the thermal bake cycles which are associated with using conventional compositions in automotive applications.

Abstract: A cationically polymerizable pigmented composition comprising (A) a cationically polymerizable binder component containing at least one resin or compound selected from the group consisting of (A-1) a cationically polymerizable acrylic resin consisting of a copolymer of (a) a (meth) acrylic ester monomer having C.sub.6-31 aliphatic hydrocarbon group, (b) a polymerizable unsaturated monomer containing a polymerizable unsaturated group and at least one cationically polymerizable moiety selected from the group consisting of an epoxy group and an oxetane ring, and optionally (c) other polymerizable unsaturated monomer, and (A-2) a fatty acid-modified epoxy compound containing C.sub.6-32 aliphatic hydrocarbon group and epoxy group, (B) a cationic polymerization initiator initiating polymerization by irradiation or heating, and (C) a color pigment.

Abstract: A polyolefinic resin is combined with a (meth)acrylic polyfunctional monomer compound having an aromatic ring, an alicyclic ring or a heterocyclic ring nearly in the center of its chemical formula, and a pyrolyzable chemical foaming agent to give a curable and foamable polyolefinic resin composition. The composition is shaped into a sheet, then cured and foamed into a sheet foam. The cured foam of polyolefinic resin has a curing degree of from 10 to 70%, and has the advantages of good heat resistance, good workability and shapability, and good pressure resistance.

Abstract: An aqueous unpigmented coating and printing composition useful for gravure and flexographic printing on plastic and metal substrates is provided by preparing an aqueous emulsion of a hydrophobic UV curable oligomer and a photoinitiator and adding about 1 to 10% by weight of the composition of a water soluble or reducible polymeric thickener in an amount effective to provide a viscosity of about 10 to 50 poises and specified rheology properties whereby the composition is capable of yielding clear cured films as low as about 2 microns in thickness.

Abstract: Described is a preferred UV curable coating composition comprising (exclusive of any solvent present): (a) about 5% to 90% by weight of an acrylated aliphatic urethane having a molecular weight of about 500 to 2000 and formed by the reaction of a multifunctional acrylate with a molecular weight of about 190 to 500 and containing at least three polymerizable unsaturated groups per molecule, with an aliphatic urethane based on a polymer of alkyl carbomonocycle diisocyanate with alkanepolyol polyacrylates; (b) about 5% to 30% by weight of a multifunctional acrylate having a molecular weight of about 170 to 1000 and containing at least two polymerizable unsaturated groups per molecule; and (c) a photopolymerization initiator and/or sensitizer. Also described are preferred processes and coated articles involving the preferred coating compositions.

Abstract: Dye compounds of the formula ##STR1## wherein X is for example CH, C--CH.sub.3 or .sup.+ NOR L.sup.- ; R is inter alia C.sub.1 -C.sub.6 alkyl; R.sub.1 is for example C.sub.1 -C.sub.8 alkoxy or C.sub.1 -C.sub.12 alkyl; s is 0 to 4; R.sub.2 is for example hydrogen; Ar is for example a group ##STR2## Y inter alia is C.sub.1 -C.sub.6 alkyl or C.sub.1 -C.sub.6 alkoxy; r in the formula (A) is 0 to 5, in the formulae (B) and (E) is 0 to 9 and in the formula (D) is 0 to 7; and L is an anion;in combination with an electron donor compound, especially a borate compound, are suitable as photoinitiators for the photopolymerization of radically polymerizable compositions.

Abstract: Compounds of formula (I), ##STR1## wherein X is CH, C--CH.sub.3, C--Cl, C--O--C.sub.1 -C.sub.8 alkyl or N; R is C.sub.1 -C.sub.6 alkyl, benzyl, CH.sub.2 COOR.sub.3 or a group (a); R.sub.1 is C.sub.1 -C.sub.8 alkoxy, C.sub.1 -C.sub.12 alkyl, halogen, NO.sub.2, benzyloxy or phenyloxy, wherein the phenyl ring in the benzyloxy or phenyloxy group is unsubstituted or substituted by C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.12 alkyl, halogen or CF.sub.3 ; R.sub.2 is C.sub.1 -C.sub.8 alkoxy, C.sub.1 -C.sub.12 alkyl, benzyloxy or phenyloxy, wherein the phenyl ring in the benzyloxy or phenyloxy group is unsubstituted or substituted by C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.12 alkyl, halogen or CF.sub.3 ; R.sub.3 is hydrogen, C.sub.1 -C.sub.12 alkyl or benzyl; Y is unsubstituted or C.sub.1 -C.sub.6 alkoxy-substituted C.sub.1 -C.sub.6 alkyl, or Y is C.sub.1 -C.sub.6 alkoxy, halogen, CF.sub.3, NO.sub.2, benzyloxy or phenyloxy, wherein the phenyl ring in the benzyloxy or phenyloxy group is unsubstituted or substituted by C.

Abstract: An ultraviolet curable clearcoat composition comprising (exclusive of any solvent present): (a) about 30% to about 90% by weight of an acrylated aliphatic urethane having a molecular weight of about 1200 to 2600 and formed by the reaction of a multifunctional acrylate with a molecular weight of between about 110 and about 500 with an aliphatic urethane based on a polyether and having a molecular weight of about 800 to about 2200; (b) about 15% to about 70% by weight of a multifunctional acrylate having a molecular weight of about 170 to about 1000 and containing at least two polymerizable unsaturated groups per molecule; and (c) a photopolymerization initiator and/or sensitizer. Also described are preferred processes and clearcoated articles involving preferred clearcoat compositions.

Abstract: Provided is radiation-curable ink composition containing a radiation-curable carrier system containing at least one radiation-curable monomer or oligomer and at least one pigment dispersed in the radiation-curable carrier system in an amount sufficient to provide a color which is visible without magnification. The pigment is substantially insoluble in the radiation-curable carrier system whereby the particulate shape of the pigment is substantially retained in the radiation-curable carrier system. The pigment having a particle size that substantially avoids pigment induced microbending of an optical glass fiber coated with the ink coating.

Abstract: A photosensitive resin composition comprising (A) a binder polymer and/or a prepolymer; (B) an ethylenically unsaturated compound; (C) a radical producer capable of producing a free radical upon exposure to an ultraviolet ray of 300 to 400 nm; and (D) an anthraquinone dye capable of exhibiting a color change upon exposure to an ultraviolet ray having a wavelength in the range of 300 to 400 nm in the presence of the radical producer (C). This photosensitive resin composition, upon exposure through a negative mask to an ultraviolet ray of a wavelength in a specific range and of a quantity larger than a threshold value, can form a photoresin product having image and non-image portions which are different in color from each other, and, hence, this composition can advantageously be used in the fields of printing plates and resists.

Abstract: Photocurable addition-polymerizable compositions containing a free-radically-polymerizable monomer and a photoinitiator system containing i) an arylidonium salt, ii) a sensitizing compound, and iii) an electron donor having an oxidation potential that is greater than zero and less than or equal to that of p-dimethyoxybenzene (1.32 volts vs. S.C.E.). The compositions cure rapidly and deeply under ultraviolet or visible light.

Abstract: A radiation sensitive colored composition which enables pigments to have excellent dispersibility and can have dispersion stability with a lapse of time, and forming a color filter using the foregoing composition, thereby ensuring excellent film properties, almost no development residue and satisfactory pattern reproduction in the color filter, which composition comprising (A) a copolymer which is produced by copolymerizing at least (1) a monofunctional macromonomer having a polymeric main chain comprising a repetition of at least one specified unit constituent and a particular polymerizable double bond-containing group situated at only one end of the main chain, (2) a specified monomer, (3) a quaternary ammonium salt monomer and (4) a monomer containing at least one specified acid amido group in the molecule, (B) a radiation sensitive compound and (C) a pigment.

Abstract: An ultraviolet curable clearcoat composition comprising (exclusive of any solvent present): (a) about 30% to about 90% by weight of an acrylated aliphatic urethane having a molecular weight of about 1200 to 2600 and formed by the reaction of a multifunctional acrylate with a molecular weight of between about 110 and about 500 with an aliphatic urethane based on a polyether and having a molecular weight of about 800 to about 2200; (b) about 15% to about 70% by weight of a multifunctional acrylate having a molecular weight of about 170 to about 1000 and containing at least two polymerizable unsaturated groups per molecule; and (c) a photopolymerization initiator and/or sensitizer. Also described are preferred processes and clearcoated articles involving preferred clearcoat compositions.

Abstract: The present invention provides a composition for a polymeric ion conductive membrane. Said composition comprises an alkaline salt, an acrylate and/or methacrylate of poly(ethylene glycol) alkyl ether with an unsaturated reactive radical, a poly(alkylene glycol) dimethacrylate or a poly(alkylene glycol) trimethacrylate, a vinylic monomer and an UV radiation curing initiator.The present invention further provides a method for producing said polymeric ion conductive membrane with the composition.The polymeric ion conductive membrane so produced according to the present invention has an excellent mechanical feature, strong adhesive strength and high ionic conductivity at room temperature.

Abstract: The present invention relates to an aqueous-based coating composition for forming strippable, protective coating for protecting surfaces, such as glass, metal, ceramic, plastic or other materials of construction. More specifically, the compositions and coatings formed therefrom of this invention are particularly useful in connection with protecting precision surfaces, such as optical lenses, including but not limited to ophthalmic lenses, telescopic lenses, microscopic lenses, and the like, which protection is desirably only of a temporary nature.

Abstract: The present invention concerns perfluoro-based antistatic compositions comprising 0.5 to 5.0 parts by weight of an ionic perfluoro surfactant and 0.5 to 5.0 parts by weight of a nonionic perfluoro surfactant in admixture with 100 parts by weight of nonfluorinated, copolymerizable, radiation curable prepolymers as well as antistatic hard coatings prepared from these compositions. The present invention also concerns optical recording media having such antistatic hard coatings provided on at least one surface.

Abstract: The present invention relates to a low electronic conductivity polymer composition having well dispersed metal granules, a stable powder made from photosensitive polycrystalline complexes of pyrrole, or its substituted derivatives and silver cations for making the polymer composition, and methods of forming the stable powder and polymer composition, respectively. A polycrystalline complex of silver and a monomer, such as pyrrole, its substituted derivatives or combinations thereof, is precipitated in the form of a stable photosensitive powder upon addition of the monomer to a solvent solution, such as toluene containing an electron acceptor. The photosensitive powder can be stored in the dark until needed. The powder may be dissolved in a solvent, cast onto a substrate and photopolymerized.

Abstract: A process for forming a dispersion of polytetrafluoroethylene particles in a liquid containing a dispersant by passing the mixture through a plurality of nozzles within a liquid-jet interaction chamber at a pressure of to deagglomerate and stabilize the polytetrafluoroethylene particles.

Abstract: Photosensitive polyimides (Ps-PIM) materials have been synthesized that belong to three families of Ps-PIM materials. Through the use of precursors, various catalytic compositions with differing photosensitivities are provided. The results are Ps-PIM materials having increased photosensitivities at wavelengths longer than approximately 330 to 350 nm and an associated catalytic system that is insensitive to oxygen. A variety of applications, including use in holographic systems, are improved by the present invention.

Abstract: A compound represented by the following general formula (1) and a photosensitive resin composition comprising the compound of formula (1): ##STR1## The compound of formula (1) normally has a low ultraviolet absorption, but has a high ultraviolet absorption when heat-treated. The present invention also provides a photosensitive resin layer composition which has a low ultraviolet absorption in an appropriate wavelength range such that ultraviolet rays reach sufficiently deep into the film to effect curing when exposed to light, but which has a high ultraviolet absorption when subsequently processed.

Abstract: Radiation-sensitive organo-halogen compounds that have a photo-labile halomethyl-1,3,5-triazine moiety and a polymeric moiety within the same molecule. The compounds of this invention are comprised of a polymeric moiety having attached or incorporated within its structure at least one 1,3,5-triazine nucleus, said triazine nucleus having at least one halomethyl substituent attached to a carbon atom of the triazine nucleus. These compounds are capable of being stimulated by actinic radiation at wavelengths of from about 250 to about 900 nanometers to generate free radicals and/or acids. The compounds of this invention are useful as photoinitiators in free radical polymerization reactions, oxidation-reduction reactions, or reactions sensitive to acid, and they also exhibit the capability to crosslink upon exposure to light.

Abstract: A collagen-hydrogel for promoting epithelial cell growth and regeneration of the stroma is shown. Also shown is an optical lens for the eye, fabricated from the collagen-hydrogel, which, when affixed to Bowman's membrane, promotes and supports epithelial cell growth, enables corneal epithelium of the cornea of an eye, during the healing process, to attach to and cover the anterior surface of the lens implanting the same and to regenerate the stroma which grows over the edge of and attaches to the optical lens. Laid down in the layers of the regenerated stroma are new keratocytes and collagen fibial produced from keratocytes. The collagen-hydrogel is a hydrogel polymer formed by the free radical polymerization of a hydrophilic monomer solution gelled and crosslinked in the presence of an aqueous stock solution of collagen to form a three dimensional polymeric meshwork for anchoring collagen. The collagen-hydrogel material has a ratio by weight of collagen-to-hydrogel in the range of about 0.

Abstract: Acid sensitive polymeric compositions, and improved chemically amplified microlithographic resist compositions comprising the acid sensitive polymeric compositions, and methods for the preparation and use thereof are disclosed. The compositions comprise, in admixture, a polymeric binder, an acid labile moiety which provides selective aqueous base solubility upon cleavage, and a compound that generates acid upon exposure of the resist composition to imaging radiation. More particularly, the compositions have one or more acid labile ketal groups, which may be chemically linked to a polymeric resin or which may be incorporated into a separate component to form a dissolution inhibitor. Crosslinking of the polymer to produce a high molecular weight, nonpolar resin may also occur by ketal exchange. Upon exposure, molecular weight and polarity changes of the crosslinked resin produce high contrast during development.

Abstract: To provide a fluorine-containing resin molded article surface-modified by irradiating, onto a surface thereof, a laser beam having a wavelength of 150 to 370 nm through a basic solution, preferably an aqueous basic solution. The surface-modified fluorine-containing resin molded article is excellent in adhesion to not only organic materials but also metals.

Abstract: A light-sensitive resin composition which can be developed in an alkaline aqueous solution and has an excellent image-forming performance and a sufficient UV absorbance after an image formation is disclosed. The light-sensitive resin composition includes (1) a photopolymerization initiator or a photopolymerization initiator system, (2) an addition-polymerizable monomer having an ethylenically unsaturated double bond, (3) a high molecular binder which is soluble in an alkaline aqueous solution and insoluble in water, and (4) at least one of the compounds which substantially do not absorb light in a specified UV region and which, when subjected to treatment with an aqueous alkali solution and/or to heating, are capable of absorbing light in that region and have substantially no absorption in the visible region.

Abstract: UV curable ink-jet inks for continuous ink-jet printing and drop on demand (DOD) ink-jet printing are provided which are preferably applied to substrates capable of absorbing part of an ink droplet applied thereupon. The ink compositions of the present invention include a mixture of water which serves as a solvent, a water miscible polymerizable material capable of being cured upon the application of UV light, a photoinitiator, and a colorant which may be a dye or a color pigment. The ink compositions may also include a bridging fluid.

Abstract: A chemically amplified resist comprising an alkali-soluble resin or a resin having at least one acid-dissociable group which is alkali-insoluble or -sprairingly soluble but becomes alkali-soluble upon dissociation of said acid dissociable group due to an acid; a radiation-sensitive, acid-generating agent; and an optional component in which resist, the radiation-sensitive, acid-generating agent generates an acid upon irradiation with a radiation in the irradiated portion and the solubility of the resin component and optional component in a developing solution is varied in the irradiated portion by a chemical reaction caused by the catalytic action of the acid, whereby a pattern is formed, characterized in that a compound having a nitrogen-containing basic group is contained in the resist.

Abstract: A polymer composite is described having a bicontinuous structure of two substantially nonporous phases, one being a hydrophilic polymer and the other being a hydrophobic polymer. The bulk properties of both polymers are retained in the polymer composite. The composite is prepared from a microemulsion comprising a free-radically ethylenically unsaturated polar species in the aqueous phase, a free-radically ethylenically unsaturated hydrophobic monomer in the oil phase, and surfactant.

Abstract: Crosslinkable liquid composition based on organic isocyanates and epoxy compounds, comprising the following components:(A) an organic polyisocyanate;(B) a polyepoxide or mixture of a polyepoxide and a monoepoxide; and(C) a catalyst constituted by at least one cyanoderivative containing a quaternary nitrogen atom,which composition can be polymerized at temperatures of 40.degree. C. or higher, by a process comprising exposure thereof to a non-ionizing electromagnetic radiation having a frequency comprised in the microwave range of frequencies, to obtain a solid material endowed with an excellent combination of physical, chemical and mechanical properties.

Abstract: Photocurable glycosaminoglycan (GAG) derivatives and crosslinked glycosaminoglycans, which are highly safe and biocompatible, a method of preparing such photocurable GAG derivatives readily moldable by casting using a solvent when desired, by which method unreacted substances causative of adverse effects can be readily eliminated, and a method of producing the crosslinked GAGs and medical materials based on the photocurable GAG derivatives or crosslinked GAGs are provided. The photocurable GAG derivatives comprise a glycosaminoglycan and a photoreactive compound bound thereto and can be produced, for example, by subjecting hydroxyl or carboxyl groups of the glycosaminoglycan to esterification reaction or amidation reaction, respectively, with the photoreactive compound. The crosslinked GAGs are derived from the photocurable GAG derivatives by intermolecular crosslinking of the photoreactive compound bound thereto.

Abstract: A stabilized heat curable adhesive prepared from a formulation comprised of (1) at least one free radically polymerizable monomer; (2) at least one epoxy function monomer; (3) at least one free radical polymerization photoinitiator; (4) a thermally-initiated cationic catalyst system comprising (a) at least one salt of an organometallic cation, (b) at least one stabilizing additive; (5) optionally, at least one alcohol-containing material; and (6) optionally, adjuvants.

Abstract: Polymer compositions having improved resistance to thermoforming sag are disclosed. The compositions comprise a first and second portion selected from the group comprising polypropylene, propylene-ethylene copolymers and mixtures thereof wherein a first portion of the composition is (1) mixed with from about 500 to about 3000 ppm of antioxidant; and (2) irradiated with a dosage of from about 10 to about 20 Mrads gamma or electron beam of ionizing radiation in air, and the second portion of said polymer composition is non-irradiated. The first portion is present in an amount effective, from about 1.0% to about 10.0%, to increase the elasticity of the polymer composition in the molten state by at least 10% as compared to the second portion of said polymer composition.

Abstract: A UV curable organic solvent soluble, aqueous nonalkaline soluble and peelable temporary solder mask composition to be applied to a surface to be protected, having a reactive diluent monomer capable of polymerization upon exposure to ultraviolet light and a photoinitiator serving as a free radical source to initiate polymerization.

Abstract: A resin composition suitable for marking with a laser and a method for laser marking said resin are provided. The resin composition comprises a thermoplastic resin, one or more compounds selected from the group consisting essentially of (i) tetrazole compounds, and (ii) sulfonylhydrazide, nitroso and azo compounds having a decomposition temperature of at least 210.degree. C., and carbon black.

Abstract: A treatment method for polythiol compounds used in thiol-ene formulations, especially formulations employing norbornene resins, significantly improves cure speed retention on aging of thiol-ene formulations which include hydroxylamine salts, such as N-nitrosoarylhydroxylamine aluminum salts, as shelf-life stabilizers. The treatment comprises contacting the polythiol with an amphoteric treating agent selected from the group consisting of silicated magnesium oxide, magnesium oxide, magnesium hydroxide, calcium oxide, calcium hydroxide, barium oxide, and barium hydroxide, and then separating the resin from the treating agent prior to mixture with a polyene to form a thiol-ene composition. In formulations employing phenolic compounds having an alkenyl group in conjugation with the phenyl group thereof as shelf-life co-stabilizers the treatment method also significantly enhances the shelf-life stability of the formulation compared to formulations made from untreated polythiol.

Abstract: A method and composition for forming investment casting patterns wherein thermally-collapsible microspheres are incorporated into the pattern composition. The patterns can be made either by conventional pattern forming techniques or by solid imaging techniques. After investing the microsphere containing pattern in the ceramic shell, the pattern and shell are heated, causing a collapse of the microspheres and thereby preventing cracking of the shell. The shell is then heated to burn-out the remaining pattern material and fire the shell, thereby creating a mold.

Abstract: A lubricious polymeric composition which is stable toward sterilizing radiation includes a semicrystalline polyolefin of narrow molecular weight distribution having incorporated therein a liquid mobilizing additive, a radiation stabilizing amount of a hindered amine, a lubricating amount of an erucic acid derivative and a clarifying amount of a sorbitol derivative. The invention includes a sterilized article fabricated from the composition and a method to radiation sterilize the article.

Abstract: Ultraviolet radiation-curable primary and secondary coating compositions for optical fibers are disclosed. The primary coatings comprise a hydrocarbon polyol-based reactively terminated aliphatic urethane oligomer; a hydrocarbon monomer terminated with at least one end group capable of reacting with the terminus of the oligomer; and an optional photoinitiator. The secondary coatings comprise a polyester and/or polyether-based aliphatic urethane reactively terminated oligomer; a hydrocarbonaceous viscosity-adjusting component capable of reacting with the reactive terminus of (I); and an optional photoinitiator. Also disclosed are optical fibers coated with the secondary coating alone or with the primary and secondary coatings of the invention.

Abstract: A lubricious polymeric composition which is stable toward sterilizing radiation includes a semicrystalline polyolefin of narrow molecular weight distribution having incorporated therein a liquid mobilizing additive, a radiation stabilizing amount of a hindered amine, a lubricating amount of an erucic acid derivative and a clarifying amount of a sorbitol derivative. The invention includes a sterilized article fabricated from the composition and a method to radiation sterilize the article.

Abstract: Mixtures of polyisocyanates and epoxides are cured by microwave irradiation, optionally with microwave or thermal post-curing to produce cured polymer articles having good chemical, electrical and mechanical properties.

Abstract: A photosensitive polyimide precursor composition containing as main ingredients a poly(amic acid) wherein at least one molecular end is esterified with an alcohol, a compound containing carbon-carbon unsaturation having photoreactivity, and a photopolymerization initiator.The photosensitive polyimide precursor composition of the present invention can be prepared without the formation of any harmful by-product. When film formed from this composition is masked for patterning and then subjected to exposure and development using a developer, the amount of exposed portion dissolved in the developer until unexposed portion is dissolved off by the developer, is small and so it is possible to obtain a thick pattern. Further, by heat-treating this pattern, there can be obtained a thick polyimide pattern.

Abstract: Polymer compositions having a first and second portion selected from polypropylenes, polyethylenes, propylene-ethylene copolymers and mixtures thereof having enhanced crystallization properties and a method for producing the same are disclosed. Antioxidant is mixed with the first portion, 0.01 to 1.25 wt %, of the composition which is then irradiated to a dosage of 5-30 Mrads of ionizing radiation in air to induce cross linking. The irradiated first portion is then blended with the non-irradiated second portion. The cross-linked polymer is believed to provide nucleation sites for the initiation of crystallization, thereby enhancing crystallization of the polymer as evidenced by elevated DSC freeze points. Crystallization of the polyolefin is enhanced without any detrimental effects on hexane or xylene extractability of the polymer and without degrading the composition to any appreciable extent.

Abstract: The present invention relates to a silicone coating composition which, when cured on a solid substrate either by ultraviolet or electron beam radiation, provides a transparent abrasion resistant coating firmly adhered thereon. The silicon coating is prepared by reacting at least one multifunctional acrylate monomer with an amino-organofunctional silane, mixing the modified silane with at least one acrylic monomer and thereafter adding colloidal silica.