Patent application number | Description | Published |
20090023832 | PROCESS FOR PRODUCING PRESSURE-SENSITIVE ADHESIVE LAYER - The present invention relates to a process for producing a pressure-sensitive adhesive layer, which includes irradiating a photopolymerizable acrylic pressure-sensitive adhesive composition layer provided between two films with an active energy beam to polymerize the photopolymerizable acrylic pressure-sensitive adhesive composition layer, in which the polymerization is performed while a layer of a composition for preventing polymerization inhibition which is curable with an active energy beam in the atmosphere is provided on a side surface of the photopolymerizable acrylic pressure-sensitive adhesive composition layer. According to the process for producing a pressure-sensitive adhesive layer of the present invention, owing to the construction as discussed above, it is possible to reuse a film. Moreover, it is possible to prevent a lowering in the cohesive force in the side surface of the thus formed pressure-sensitive adhesive composition layer caused by a lowering in the polymerization degree in the side surface of the photopolymerizable acrylic pressure-sensitive adhesive composition layer during the photopolymerization. | 01-22-2009 |
20090034928 | Optical waveguide film, optical substrate, and methods for manufacturing the same - An optical waveguide film includes a clad layer having an adhesive function; and a core layer covered by the clad layer. | 02-05-2009 |
20090041416 | Optical waveguide film and manufacturing method thereof - An optical waveguide film includes a film including a clad layer and a core layer covered by the clad layer; an adhesive layer formed on at least one surface of the film; and a plurality of projection portions formed on a surface of the adhesive layer and arranged at spaced intervals to one another. | 02-12-2009 |
20090067798 | Optical waveguide film and manufacturing method thereof - An optical waveguide film includes a film including a clad layer and a core layer covered by the clad layer; and an adhesive layer formed at least on one surface of the film, having a rough structured surface having an arithmetic mean surface roughness of 0.1 to 2.0 μm, and having a storage modulus at 25° C. of 10 to 100 MPa obtained by dynamic viscoelastic measurement in torsion mode with a frequency of 1 Hz. | 03-12-2009 |
20090169817 | Polymer articles with Polymer layer containing incompatible material unevenly distributed and surface-roughened tape or sheet comprising the polymer articles - Disclosed is a polymer article having a multilayer structure including a polymer layer and a monomer-absorptive layer that is arranged on the polymer layer and is capable of absorbing at least one of monomer components constituting the polymer. The polymer layer is a polymer layer containing an unevenly distributed immiscible material that is immiscible with the polymer and is enriched at an interface, or in the vicinity thereof, opposite to the monomer-absorptive layer. The polymer article preferably further includes a cover film arranged on the polymer layer on a side opposite to the monomer-absorptive layer. The vicinity of the interface opposite to the monomer-absorptive layer is preferably a region ranging from the interface opposite to the monomer-absorptive layer in a thickness direction to 50% or less of the total thickness of the polymer layer. | 07-02-2009 |
20100215947 | HEAT-EXPANDABLE REMOVABLE ACRYLIC PRESSURE-SENSITIVE ADHESIVE TAPE OR SHEET - Disclosed is a heat-expandable/peelable acrylic pressure-sensitive adhesive tape or sheet which maintains a high adhesion force but the bonded part can be easily separated/debonded regardless of whether the surface of the adherend is uneven. The heat-expandable/peelable acrylic pressure-sensitive adhesive tape or sheet includes a viscoelastic body containing both bubbles and microparticles, and on at least one side thereof, a pressure-sensitive adhesive layer containing a blowing agent. The heat-expandable/peelable acrylic pressure-sensitive adhesive tape or sheet preferably contains bubbles in an amount of 3 to 30 percent by volume based on the total volume of the viscoelastic body. The viscoelastic body containing both bubbles and microparticles is preferably a layer prepared by polymerization of a polymerizable composition containing a vinyl monomer mixture containing at least one alkyl(meth)acrylate whose alkyl moiety having 2 to 18 carbon atoms as a main component, or partially polymerized prepolymer of the monomer mixture; a photoinitiator; microparticles; a multifunctional (meth)acrylate; and bubbles. | 08-26-2010 |
20100304103 | GAS BARRIER ARTICLES WITH POLYMER LAYER CONTAINING GAS BARRIER MATERIAL UNEVENLY DISTRIBUTED AND PROCESS FOR PRODUCING THE SAME - Provided is a gas barrier article which exerts gas barrier properties by the action of a gas barrier material contained in a small content. The gas barrier article is an article having a multilayer structure including a polymer layer and a monomer-absorptive layer capable of absorbing at least one of monomer component(s) constituting the polymer, in which the polymer layer is a polymer layer containing the gas barrier material unevenly distributed in the layer and enriched at an interface, or in the vicinity thereof, opposite to the monomer-absorptive layer. The vicinity of the interface opposite to the monomer-absorptive layer is preferably a region ranging from the interface opposite to the monomer-absorptive layer and occupying, in a thickness direction, 50% or less of the total thickness. | 12-02-2010 |
20100304104 | VISCOELASTIC ARTICLES WITH POLYMER LAYER CONTAINING ELASTOMER UNEVENLY DISTRIBUTED - Provided is a viscoelastic article which exerts different properties between one surface and the other surface thereof, which has a transparent appearance, and which less causes staining of objects to which the viscoelastic article is adopted. The viscoelastic article is an article having a multilayer structure including a polymer layer, and a monomer-absorptive layer capable of absorbing at least one of monomer component(s) constituting the polymer, in which the polymer layer is a polymer layer containing an elastomer unevenly distributed and enriched at an interface, or in the vicinity thereof, opposite to the monomer-absorptive layer. The vicinity of the interface opposite to the monomer-absorptive layer is preferably a region ranging from the interface opposite to the other interface with the monomer-absorptive layer and occupying, in a thickness direction, 50% or less of the total thickness. | 12-02-2010 |
20110005677 | Optical waveguide film, optical substrate, and methods for manufacturing the same - An optical waveguide film includes a clad layer having an adhesive function; and a core layer covered by the clad layer. | 01-13-2011 |
20110008010 | Optical waveguide film, optical substrate, and methods for manufacturing the same - An optical waveguide film includes a clad layer having an adhesive function; and a core layer covered by the clad layer. | 01-13-2011 |
20110021705 | COMPOSITE FILM - Disclosed is a composite film containing an acrylic polymer and a urethane polymer. The acrylic polymer contains an acrylic component including an acrylic acid monomer and a monofunctional (meth)acrylic monomer whose homopolymer has a glass transition temperature (Tg) of not less than 0° C. The acrylic acid monomer content in the acrylic component is not less than 1% by weight but not more than 30% by weight. The urethane polymer contains a urethane component obtained by reacting a diol and a diisocyanate. The diol and diisocyanate are used at an equivalent ratio NCO/OH of 1.1-2.0. The composite film has a content soluble in N,N-dimethylformamide (DMF). | 01-27-2011 |
20120059125 | COMPOSITE FILM AND METHOD FOR PRODUCING SAME - The present invention is to provide a composite film having transparency, strength, elongation, and flexibility. The composite film contains: a urethane polymer formed from a polyol and a polyisocyanate; and an acrylic polymer obtained by photopolymerization of one or more (meth)acrylic monomers, in which total light transmittance of the composite film is 93.0% or more in terms of a thickness of 100 μm, breaking strength (23° C.) of the composite film is 3.0 MPa or more to 75 MPa or less, breaking elongation ratio (23° C.) is 150% or more to 1,000% or less, and 20% modulus (23° C.) is 0.1 MPa or more to 7.5 MPa or less. | 03-08-2012 |
20130062046 | THERMAL CONDUCTIVE SHEET AND PRODUCING METHOD THEREOF - A thermal conductive sheet is obtained by preparing a resin layer, laminating a particle-containing monomer mixture layer which contains a monomer to be absorbed in the resin layer and a thermal conductive particle on one side surface of the resin layer, localizing the thermal conductive particle at one side by allowing the monomer to be absorbed in the resin layer, and thereafter, reacting the monomer to be cured. | 03-14-2013 |
20130065016 | THERMAL CONDUCTIVE SHEET AND PRODUCING METHOD THEREOF - A thermal conductive sheet is obtained by preparing a resin layer; laminating a particle-containing monomer mixture layer which contains a monomer to be absorbed in the resin layer and a thermal conductive particle on one side surface of the resin layer; localizing the thermal conductive particle at one surface side by allowing the monomer to be absorbed in the resin layer; thereafter, reacting the monomer to be cured so as to fabricate a particle-localized sheet; laminating a plurality of the particle-localized sheets so as to allow one surface to be in contact with the other surface to fabricate a particle-localized sheet laminate; and then, cutting the particle-localized sheet laminate into a sheet shape along a laminating direction of each of the particle-localized sheets. | 03-14-2013 |
20140252404 | THERMALLY-CONDUCTIVE SHEET, LED MOUNTING SUBSTRATE, AND LED MODULE - The present invention provides a thermally-conductive sheet excellent in heat dissipation properties. The thermally-conductive sheet includes a polymer matrix and a thermally-conductive filler dispersed in the polymer matrix. The present invention is a thermally-conductive sheet including a polymer matrix and non-spherical particles of a thermally-conductive filler that are dispersed in the polymer matrix. At least a part of the thermally-conductive filler particles are oriented in a thickness direction of the sheet. When a portion of the sheet where the thermally-conductive filler particles have the highest degree of orientation in the thickness direction of the sheet is defined as a center of orientation, and an axis passing through the center of orientation and perpendicular to sheet surfaces is defined as a central axis of orientation, the thermally-conductive sheet has a region where the thermally-conductive filler particles are oriented toward one point on the central axis of orientation and where the degree of orientation of the thermally-conductive filler particles in the thickness direction of the sheet decreases from the center of orientation toward a periphery of the sheet. | 09-11-2014 |
20150062896 | FLAME-RETARDANT SILICONE RESIN COMPOSITION AND FLAME-RETARDANT SILICONE RESIN SHEET - The flame-retardant silicone resin composition of the present invention comprises: an inorganic oxide particle-containing condensation-reactive silicone resin (A) comprising a crosslinking structure in which inorganic oxide particles dispersed in a polysiloxane resin having a condensation-reactive group are crosslinked with the polysiloxane resin by chemical bonds; and inorganic particles (B). The inorganic oxide particles are preferably at least one type of inorganic oxide particles selected from the group consisting of silica, alumina, glass frit, and antimony-doped tin oxide. | 03-05-2015 |