Abstract: Disclosed is an optical device structure comprising a low shrinkage mixture wherein the shrinkage of the mixture is limited after the curing of the mixture during optical device formation. Disclosed also are methods for forming optical devices which comprise the low shrinkage mixture.

Abstract: There are provided: a curable resin composition having a high exposure sensitivity and a good developing property, and thereby capable of forming an accurate and precise pattern; a liquid crystal panel substrate on which a protective film for covering a color layer or spacers for a liquid crystal layer, by using the curable resin composition, hardly causing a color irregularity and contrast irregularity; and a liquid crystal panel using the liquid crystal panel substrate and having a superior display quality. The curable resin composition of the present invention comprises: a copolymer (a) having a molecular structure in which a constitutional unit including an acidic functional unit and a constitutional unit including a photocurable functional group are linked at least; a photopolymerization initiator (b) having a tertiary amine structure; and a photocurable compound (c) having at least one acidic functional group and at least three photocurable functional groups.

Abstract: A lubricious composition suitable for use on medical device, the composition including at least one alkoxylated acrylate compound having at least two acrylate groups per molecule and at least one second component which provides lubricity.

Abstract: A radiation curable coating composition comprising: (i) a thermoplastic polymer; (ii) at least one ethylenically unsaturated adhesion-promoting monomer or oligomer; (iii) at least one other ethylenically unsaturated radiation polymerizable reactant; and (iv) at least one initiator for initiating cure.

Abstract: A process for preparing a polyacrylate-based shaped article, a polyacrylate being polymerized by a conventional method, wherein the polyacrylate comprises copolymerized comonomers having thermally crosslinkable groups and comonomers having attached photoinitiators, and the polyacrylate is crosslinked thermally in a first step and by irradiation with UV light in a second step.

Abstract: Powder coating binders having a glass temperature of ?35° C. containing at least one polymer and one or more radiation-curing reactive thinners, a process for the production of these powder coating binders and their use as a component of powder coatings.

Abstract: A curable composition and method for producing a tear resistant, yet soft and deformable in-the-ear product yielding the user greater comfort and durability. The curable composition incorporated into a hearing aid apparatus provides a deformable, yet tear resistant housing, which may be mated to a soft tip component. The hearing aid housing provides better comfort, durability and acoustic performance for a variety of ear canal shapes. The curable composition that provides these properties includes at least one urethane acrylate oligomer, at least one reactive diluent and a cure system. The composition when cured desirably produces a tear strength of at least about 75 pli and a hardness of about Shore A 60 to about 75.

Abstract: Provided are a barrier coating composition and a method of forming photoresist pattern by an immersion photolithography process using the same. The barrier coating composition includes a polymer corresponding to formula I having a weight average molecular weight (Mw) of 5,000 to 100,000 daltons and an organic solvent, wherein the expressions 1+m+n=1; 0.1?1/(1+m+n)?0.7; 0.3?m/(1+m+n)?0.9; and 0.0?n/(1+m+n)?0.6 are satisfied; Rf is a C1 to C5 fluorine-substituted hydrocarbon group; and Z, if present, includes at least one hydrophilic group. Compositions according to the invention may be used to form barrier layers on photoresist layers to suppress dissolution of photoresist components during immersion photolithography while allowing the barrier layer to be removed by alkaline developing solutions.

Abstract: Polymerizable compositions and methods are provided that include an ethylenically unsaturated compound and an arylsulfinate salt. The polymerizable compositions are useful as hardenable dental compositions.

Abstract: The invention concerns a photocurable adhesive composition comprising, based on total weight of photopolymerizable monomers and/or oligomers of the composition: (A1) 20 to 80 wt % of at least one diacrylate monomer or oligomer thereof (A1); (A2) 80 to 20 wt % of at least one dimethacrylate monomer or oligomer thereof; (B) 0 to 50 wt %, of at least one copolymerizable monomer different from components (A1) and (A2); with the proviso that the composition is free from any thio(meth)acrylate (—SCOCR??CH2, with R??H or CH3) monomer or oligomer thereof.

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: Photosensitive compositions which can be developed by alkali solution, comprise (A) a polymer containing at least one carboxylic acid group in the molecule and having a molecular weight of 200,000 or less, (B) selected ?-aminoalkylphenone compounds as photoinitiators and (C) an ester of a polyol, wherein the polyol is partially or fully esterified with an ethylenically unsaturated carboxylic acid a monomeric, oligomeric or polymeric compound having at least one olefinic double bond.

Abstract: A flowable, light-curing underfilling material that is easily visible and distinguishable from the tooth substance. The underfilling material contains at least one polymerizable monomer, at least one polymerization initiator and also 0.3-10% white pigment.

Abstract: Low viscosity, radiation curable fluid formulations that can be used advantageously as radiation curable, inks. The formulations are easily prepared for use in ink jet systems. The viscosity of the compositions is low enough so that conventional solvent is not required in order to satisfy the requisite low ink jet viscosity specifications. After curing, the compositions form durable, weatherable, abrasion resistant, printed images on a wide variety of porous and nonporous substrates. The formulations are very suitable for outdoor printing applications, especially for printing outdoor graphics onto a variety of surfaces, including vinyl or other polymer films commonly used for signage, retroreflective signage or other retroreflective items.

Abstract: A method of polymerizing by a free radical polymerization mechanism, product formed thereby, and apparatus for performing this method, are disclosed. The composition to be polymerized by the free radical polymerization mechanism is irradiated by a substantially constant radiation, the radiation being substantially without pulsation. The use of the substantially constant radiation without pulsation reduces premature termination of the polymerization. The substantially constant radiation can be the output of a lamp powered by a constant current, direct current power supply.

Abstract: A clearcoat curable by ultraviolet radiation including at least one of A) acrylate or methacrylate monomers or mixtures thereof having from one to six free-radically polymerizable groups per molecule or B) compounds containing two or more ethylenically unsaturated, free radically polymerizable groups per molecule and mixtures thereof or mixtures of A) and B). The coating may optionally include photoinitiators, volatile organic solvent(s) and customary additives. The invention further provides a process for applying the clearcoat to a substrate. In a preferred embodiment the process according to the present invention includes low energy curing of a clearcoat applied to a substrate by means of a UV light source utilizing UVA/UVV or UVA only and involves essentially no UVB or UVC radiation.

Abstract: Modified polyolefins are produced by reacting a functionalized polyolefin with one or more ethylenically unsaturated compounds having a functional group reactive with the functional group on the polyolefin. These modified polyolefins may then polymerize in the presence of a photoinitiator upon exposure to ultraviolet radiation and also have the capability of copolymerizing in the presence of a photoinitiator with other ethylenically unsaturated crosslinking agents upon exposure to ultraviolet radiation. These modified polyolefins may also contain pendant carboxyl groups, which have the propensity to form hydrophilic salts with amines, and therefore may be rendered water-dispersible. The modified polyolefins of the present invention significantly improve the adhesion of paints, inks, and adhesives to various plastic and metal substrates.

Abstract: The present invention provides radiation curable resin compositions having enhanced low temperature flexibility and to methods of using these compositions. The radiation curable resin compositions contain no or essentially no volatile organic components (VOCs), and find particular use as coating compositions. In particular, the radiation curable resin compositions of this invention comprise a vinyl dioxolane end-capped oligomer blended with a photoinitiator.

Abstract: Provided is an alkali-soluble maleimide-based copolymer which comprises, as essential constituents, 5 to 50% by mass of a maleimide monomer unit which is at least one unit selected from the group consisting of a N-cyclohexylmaleimide monomer unit, a N-benzylmaleimide monomer unit and a substituted N-benzylmaleimide monomer unit, 8 to 30% by mass of the (meth)acrylic acid monomer unit and 30 to 87% by mass of a (meth)acrylic acid ester monomer unit and which satisfies the condition represented by the formula: 0.4×X?Y?0.5×X+10 where X is the content, in % by mass, of the N-cyclohexylmaleimide monomer unit, the N-benzylmaleimide monomer unit and the substituted N-benzylmaleimide monomer unit and Y is the content, in % by mass, of the (meth)acrylic acid monomer unit. Also provided are a color filter and a liquid crystal display which are formed by using the ionizing radiation-curable resin composition.

Abstract: Radiation curable ink compositions that include a curable component having a functionality that is greater than two, is present in the ink composition in an amount greater than 30 percent by weight, and has a molecular weight in the range of about 400 g/mole to about 10,000 g/mole; a component that has a functionality that is less than or equal to 2; and an initiator component. A solvent component, pigment, a surface tension modifier and other materials also can be included. The radiation curable inks are employed in ink jet printers and are particularly suited for use in printing on large-scale substrates. The printed images described herein have good adhesion to polymeric substrates such as styrene-based, polycarbonates, polyolefins, polyethylene terephthalate glycol ester, acrylic and others.

Abstract: Disclosed are radiation curable putty compositions that include (a) a radiation curable material, (b) a radiation cure initiator, and (c) a filler comprising a polymer, such as a polymer that is transparent to ultraviolet radiation. Also disclosed are methods for refinishing a coated substrate utilizing such putty compositions, and articles coated with such putty compositions.

Abstract: Zero VOC compositions are described and may include: one of vinyl ester solids, unsaturated polyester solids (e.g., isophthalic polyester, orthophthalic polyester, terephthalic polyester, and mixtures thereof), and mixtures thereof; polymerizable solids (e.g., a monomer, an oligomer, and mixtures thereof); and/or at least one photochemical catalyst. Zero VOC compositions may be produced by: heating polymerizable solids to a range of about 300° F. to about 500° F.; and adding one of vinyl ester solids, unsaturated polyester solids, and mixtures thereof. Additional steps may include reducing the heat to about 70° F. to about 100° F. and adding at least one photochemical catalyst and/or at least one additive. Zero VOC compositions may be curable without requiring evaporation of a VOC there from upon exposure to ultraviolet light and/or mixing with at least one thermal catalyst.

Abstract: An adhesive composition of the present invention comprises (A) a conjugated diene polymer having a weight-average molecular weight of 500 to 100,000 and (B) an electron pair-donating basic compound; or comprises (A) a conjugated diene polymer having a weight-average molecular weight of 500 to 100,000, (C) a compound having in its molecule three or more functional groups selected from the group consisting of acryloyloxy group, methacryloyloxy group and groups represented by the following formula I: wherein R1, R2 and m are the same as defined in the specification, and (D) a compound having in its molecule one or two functional groups selected from the group consisting of acryloyloxy group and methacryloyloxy group. At least a part of the surface of an adherend is coated with the adhesive composition to form an adhesive layer.

Abstract: The invention relates to a mixture for the application of a polymeric coating to a substrate. Said mixtures comprises water and optionally an organic solvent, at least one water-dispersible radically polymerizable compound, at least one water-dispersible polymerizable crosslinking compound and at least one water-dispersible compound which forms free radicals upon exposure to actinic radiation. The radically polymerizable compound cannot fully set with the free radicals formed on irradiation at room temperature, but rather comprises further reactive bonds, which lead to further or complete setting with the crosslinking compound. The invention further relates to a method for application of a non-adhesive corrosion protection layer to a substrate, by application of a mixture to the surface of a metallic or polymeric substrate, drying the mixture and irradiation of the applied coating with actinic radiation of such an intensity and for such a period that a solid, hard, tough coating is formed.

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: 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: 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: The present invention provides crosslinkable compositions useful in the preparation of hydrophilic gels, and are prepared from oligomers having pendent hydrophilic, poly(alkylene oxide) groups, pendent photoinitiator groups, and optionally polymerizable functional groups, and crosslinked by polyfunctional poly(alkylene oxides).

Abstract: A process for increasing the molecular weight of polyacrylates, characterized in that polyacrylates which are functionalized at least on one part of their chain ends by photoinitiator groups X are exposed to actinic radiation, so that a direct linking reaction of the polyacrylates takes place.

Abstract: The present invention relates to a free-radically radiation-curable, solvent-free and printable precursor of a pressure-sensitive adhesive, the precursor comprising: (i) 30-75 wt. % of one or more mono(meth)acrylate functional oligomer compounds at least one of said oligomer compounds comprising at least one urethane bond, (ii) 0-15 wt % of one or more poly(meth)acrylate functional oligomer compounds, (iii) 5-45 wt. % of one or more monomer compounds comprising one ethylenically unsaturated group, (iv) 0-5 wt. % of one or more monomer compounds comprising two or more ethylenically unsaturated groups, and (v) an effective amount of one or more free radical photoinitiators, wherein the percentages which are percentages by weight with respect to the mass of the precursor, are selected so that the precursor has a dynamic viscosity at 20° C. and at a shear rate of 100 s?1 of between 300 to 15,000 mPa·s.

Abstract: The objective is to provide a surface protecting film for polycarbonate which is easy to laminate on polycarbonate and remove from the polycarbonate, the peel adhesive strength change to polycarbonate with times is small and there is no adhesive transferring to the backside of the film substrate in the case of storage for a long period or at a high temperature in the roll shape made of the long length tape. There provided a surface protecting film for polycarbonate, wherein a film substrate having Young's modulus of 1 GPa or more and an adhesive layer are comprised, the glass transition temperature (Tg) of the adhesive composing of the pressure sensitive adhesive layer being between 40 to 90° C. and the initial 180° peel adhesive strength to polycarbonate being between 10 to 300 mN/25 mm.

Abstract: The invention provides compounds which can generate amine by irradiation with light and are excellent both in photodecomposability and in reactivity and compatibility with amine-curable compounds, and photo-setting compositions containing the compounds. The compounds are carbamoyloxyimino compounds represented by the structural formula (I); and the compositions each comprise one or more of the carbamoyloxyimino compounds and an amine-curable compound. In the formula (I), R1 is an n-valent organic group; R2 and R3 are each hydrogen or an aromatic or aliphatic group; and n is an integer of 1 or above.

Abstract: A photopolymerizing composition and a photopolymerizing recording medium manufactured using the composition, wherein the photopolymerizing composition contains: 1.0-99.0% by weight of at least one kind of polymerizable compound; 0.05-0.5% by weight of at least one kind of photosensitizer selected from among photochromic compounds that change color by incoherent UV light irradiation; 0.2-6.0% by weight of a coinitiator that is activated by visible light in the presence of a photoinduced form of the photochromic compound transformed by incoherent UV light to photopolymerize the polymerizable compound; 0-97.5% by weight of a polymer binding agent; 0-6.0% by weight of a plasticizer; and 0-3.0% by weight of a non-polymerizing solvent. The photopolymerizing recording medium has a high angular diffraction selectivity and thus can be effectively used to manufacture a 3D holographic optical memory with ultra high information storage capacity.

Abstract: A method for the production of a cross-linked support matrix that in form of a bed will permit liquid flow velocities above 5 cm/h, preferably above 50 cm/h, to pass through the bed. The method is characterized in that it comprises the steps: (a) providing a starting support matrix that has pendent unsaturated groups, and (b) subjecting said starting support matrix to electron beam or gamma-ray irradiation. The use of a cross-linked support matrix produced by a method comprising the steps of: (a) providing a starting support matrix that has pendent unsaturated groups, and (b) subjecting said starting support matrix to electron beam or gamma-ray irradiation as a support matrix in liquid chromatography, cell culturing, step-wise solid phase synthesis of organic compounds, running catalytic reactions by the use of a solid phase bound catalyst.

Abstract: An object of the present invention is to provide an excellent process for production of a surface-treated particulate water-absorbent resin wherein the process adopts a surface-treatment process that can enhance the properties (which the water-absorbent resin is desired to have) to extremely high levels, and also can solve the prior problems in such as safety, and further can sufficiently carry out the treatment even at a reaction temperature near room temperature. As a means of achieving this object, the process according to the present invention for production of a surface-treated particulate water-absorbent resin is characterized by comprising the steps of: adding a treating liquid to a particulate water-absorbent resin as a base polymer, wherein the treating liquid contains a radically polymerizable compound; and then irradiating the particulate water-absorbent resin with active energy rays while fluidizing the particulate water-absorbent resin, thereby surface-treating it.

Abstract: To obtain an adhesive having both a high initial adhesive capacity and high heat resistance, a fusible adhesive which can be cross-linked by radiation and a low tendency to creep is provided. The adhesive contains 0 to 40 weight percent of at least one elastomer which cannot be cross-linked by radiation, 15 to 40 weight percent of at least one compound containing at least two olefinic double bonds, and 20 to 85 weight percent of at least one tackifier. The adhesive is especially suitable for use on high speed labeling machines.

Abstract: Process for preparing crosslinked pressure ensitive adhesives, in which a plyacrylate is prepared by the free radical copolymericzation of a monomer mixture , the polyacrylate is then concentrated and the concentrated polyacrylate is reacted with further monomers having functional groups and subsequently crosslinking.

Abstract: The invention relates to coated optical fibers comprising soft primary coatings and to such primary coatings for protecting glass optical fibers having a sufficient high resistance against cavitation. In particular, the primary coatings have a cavitation strength at which a tenth cavitation appears (?10cav) of at least about 1.0 MPa as measured at a deformation rate of 0.20% min?1 and of at least about 1.4 times their storage modulus at 23° C. The coating preferably shows strain hardening in a relative Mooney plot, preferably has a strain energy release rate Go of about 20 J/m2 or more, and preferably has a low volumetric thermal expansion coefficient. The invention furthermore provides a method and apparatus for measuring the cavitation strength of a primary coating.

Abstract: A polymerizable composition comprising; a dendrimer having at least two polymerizable groups within a molecule; a radical initiator; and an alkali-soluble polymer, and an image recording material comprising a support and a recording layer comprising a polymerizable composition containing a dendrimer having at least two polymerizable groups within a molecule, a radical initiator and an alkali-soluble polymer.

Abstract: A method of polymerizing by a free radical polymerization mechanism, product formed thereby, and apparatus for performing this method, are disclosed. The composition to be polymerized by the free radical polymerization mechanism is irradiated by a substantially constant radiation, the radiation being substantially without pulsation. The use of the substantially constant radiation without pulsation reduces premature termination of the polymerization. The substantially constant radiation can be the output of a lamp powered by a constant current, direct current power supply.

Abstract: A photocurable composition which can be produced and cured while utilizing two different polymerization modes, can be used for bonding over a sufficiently long time period, and has excellent peel strength. The composition comprises (A) a compound containing a polymerizable unsaturated bond and giving a homopolymer having a glass transition temperature of 0 to 100° C., (B) a compound which has an unsaturated bond and is copolymerizable with the compound (A), (C) a compound having at least one cationically polymerizable group per molecule, (D) a polymerization catalyst which upon irradiation with light initiates the polymerization of the compounds (A) and (B), and (E) a cationic polymerization catalyst which upon irradiation with light initiates the cationic polymerization of the compound (C) at the cationically polymerizable group(s).

Abstract: An ultraviolet-crosslinkable polymer composition comprising a polymer containing iodine and/or bromine in an amount of from 0.001 to 10% by weight, a photoinitiator as a crosslinking agent and a polyfunctional unsaturated compound as a crosslinking aid. By using iodine and/or bromine as a crosslinking point, it is possible to carry out crosslinking of various polymers including fluorine-containing polymers which have been very difficult to crosslink with ultraviolet rays, and molding or processing can be made easily at working site at low temperature.

Abstract: A photocurable resin composition suitable for use in three-dimensional photofabrication comprising (A) a cationically polymerizable organic compound, (B) a cationic photoinitiator, and (C) a (co)polymer obtainable by (co)polymerization of monomers comprising at least one (meth)acrylate-group comprising monomer. A process for producing a three-dimensional object which comprises the use of a washing agent having a Hansen-solubility between 27-35 (Mpa)1/2.

Abstract: Described are curable adhesives containing a polyacrylate component and an epoxy component, and that are preferably optically clear, as well as methods of using such adhesives and optical components and optical elements prepared from the adhesives.

Abstract: A process for forming a surface modification on a polymer substrate and polymer substrates having such surface modifications. The process comprises the steps of absorbing a swelling monomer into the polymer substrate for a period of time in order to swell the polymer substrate; removing the swollen polymer from the swelling monomer; transferring the swollen polymer to a reaction mixture containing at least one functional monomer; polymerizing the functional monomer in the reaction mixture containing the swollen polymer substrate for a period of time; and removing the polymer from the reaction mixture. Because the surface modification produced by the process is a surface interpenetrating polymer network, the process is not sensitive to the reactive groups located on the surface of the polymer substrate. Further, the surface interpenetrating network bonds to the polymer substrate through caternary connections or other forms of chain entanglement and this is quite stable.

Abstract: The present invention relates to a photocurable resin composition which contains a photocurable component and forms on a substrate a photocurable resin layer having a viscosity of 1000-500,000 Pa·s at 23° C. and 65% RH. This resin composition is formed into a photocurable resin layer, which is laminated onto a metal sheet to give a metal sheet with a photocurable resin layer laminated thereon. This metal sheet can be worked and converted into a metal part with a high-hardness protective coating laminated thereon upon irradiation with light or electron beams after working.

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: A radiation curable adhesive composition which includes: a) an ?,?-olefinically unsaturated ether monomer component consisting of one or more compounds having the formula: R[O—CH?CHR1]n??(I) where R is an n-valent carbon-linked organic group R1 is H or a monovalent carbon-linked organic group and n has a value of 1 or more, b) an elastomeric polymer having a tensile strength at break of greater than 1500 psi (10342 kPa), and an elongation at break of greater than 100%, and c) a cationic photoinitiator.

Abstract: It is an object of the present invention to provide a method of coating a plastic molding which is appropriately applicable to various plastic substrates, an ultraviolet-curable under coating for metal evaporation, which is to be used in that method of coating, and a plastic molding obtained by that method of coating.

Abstract: There are provided a composition for coating which can form an ink receiving layer having excellent adhesion with hydrophobic substrates, water-resistance and printing stability, and an optical recording medium having an ink receiving layer formed from this composition. The composition contains a radiation-curable compound (A) composed of 50 to 90% by weight of a monofunctional (meth) acrylic monomer and 10 to 50% by weight of a multifunctional (meth) acrylic monomer, a water-absorbing organic filler (C) in an amount of 10 to 60% by weight relative to (A), and a water-absorbing inorganic filler (D) in an amount of 1 to 20% by weight relative to (A). This composition is applied on a protecting film (6) and cured to form an ink receiving layer (7), to obtain an optical disk (1).