Patent application number | Description | Published |
20090186164 | PHOTOCURABLE ACRYLIC VISCOELASTIC MATERIAL COMPOSITION, ACRYLIC VISCOELASTIC MATERIAL, ACRYLIC VISCOELASTIC MATERIAL LAYER TAPE OR SHEET AND PROCEED FOR PRODUCING THE SAME - The present invention relates to a photocurable acrylic viscoelastic material composition including: an acrylic monomer mixture containing an alkyl (meth)acrylate as a main monomer component and a polar group-containing vinyl monomer, or a partial polymerization product thereof; a (meth)acrylate compound having at least one isocyanate group within the molecule thereof; and a photopolymerization initiator. The photocurable acrylic viscoelastic material composition of the present invention has, by virtue of the above-described construction, excellent pot life and excellent storage stability, despite containing an isocyanate compound having at least one isocyanate group within the molecule thereof, and further can form an acrylic viscoelastic material excellent in the holding power at high temperatures through photocuring. Also, the acrylic viscoelastic material and acrylic viscoelastic material layer tape or sheet of the present invention is excellent in the holding power at high temperatures. | 07-23-2009 |
20100075129 | THERMALLY-FOAMABLE RE-RELEASABLE ACRYLIC PRESSURE-SENSITIVE ADHESIVE TAPE OR SHEET - The present invention relates to a thermally-foamable re-releasable acrylic pressure-sensitive adhesive tape or sheet including a microparticle-containing viscoelastic substrate and a thermal foaming agent-containing pressure-sensitive adhesive layer provided on at least one surface of the microparticle-containing viscoelastic substrate. The thermally-foamable re-releasable acrylic pressure-sensitive adhesive tape or sheet of the present invention can be easily separated or disassembled at the separation or disassembling of the bonded part while maintaining a high normal-state adhesive strength at the bonding. | 03-25-2010 |
20110003135 | ULTRAVIOLET-CURABLE PRESSURE-SENSITIVE ADHESIVE COMPOSITION, ULTRAVIOLET-CURABLE PRESSURE-SENSITIVE ADHESIVE SHEET AND PROCESS FOR PRODUCING THE SAME - The present invention relates to an ultraviolet-curable pressure-sensitive adhesive composition including (a) a monomer component containing 70 to 99 wt % of an alkyl (meth)acrylate with the carbon number in the alkyl group being 1 to 20 and 1 to 30 wt % of a polar group-containing vinyl monomer, (b) at least one polyfunctional (meth)acrylate having four or more (meth)acryloyl groups within one molecule and having an acryl equivalent of 150 or less, in an amount of 0.01 to 0.1 parts by mol based on 100 parts by mol of the monomer component, and (c) a photopolymerization initiator; an ultraviolet-curable pressure-sensitive adhesive sheet using the same; and a process for producing the same. | 01-06-2011 |
20130025777 | METHOD OF REUSABLY SEPARATING TWO ADHERED PLATES AND APPARATUS USED FOR THE METHOD - Provided is a method of reusably separating two adhered plates, including step 1 for firmly adhering two plates adhered to each other via a pressure-sensitive adhesive sheet or a curable resin layer to a first jig and a second jig, respectively, step 2 for detaching the two plates by moving at least one of the first jig and the second jig to produce a shear stress causing breakage of the pressure-sensitive adhesive sheet or the curable resin layer, and step 3 for removing the two plates after detachment from the jigs, wherein, in the aforementioned step 1, one or both of the plates is(are) firmly adhered to the jig(s) via a silicone pressure-sensitive adhesive sheet or porous pressure-sensitive is adhesive sheet. Using the method, two plates adhered to each other via a pressure-sensitive adhesive sheet or a curable resin layer can be stably and reusably detached by certainly fixing them by using jig fixtures. | 01-31-2013 |
20130210301 | COMPOSITE SHEET - Provided is a novel composite sheet, including a substrate and a foamed layer which is provided on at least one surface side of the substrate, at a low cost in an environment-friendly manner, in which the composite sheet includes a foamed layer having a uniform fine-cell structure, the average pore diameter of each of spherical cells of the foamed layer can be precisely controlled to a small one, the control range of the density of the foamed layer is wide, the control range of the thickness of the foamed layer is wide, and the composite sheet can express an excellent mechanical strength and is preferably excellent in toughness and heat resistance. The composite sheet includes a substrate; and a foamed layer which is provided on at least one surface side of the substrate, in which: the foamed layer has spherical cells, an average pore diameter of each of the spherical cells being less than 30 μm; and the foamed layer has a density of 0.1 g/cm | 08-15-2013 |
20130216814 | W/O EMULSION, FOAM, AND FUNCTIONAL FOAM - Provided is a W/O emulsion, including a continuous oil phase component and an aqueous phase component immiscible with the continuous oil phase component, in which: the continuous oil phase component includes a hydrophilic polyurethane-based polymer and an ethylenically unsaturated monomer; the hydrophilic polyurethane-based polymer includes a polyoxyethylene polyoxypropylene unit derived from polyoxyethylene polyoxypropylene glycol; and the polyoxyethylene polyoxypropylene unit includes 5 wt % to 25 wt % of polyoxyethylene. Also provided is a foam, including a hydrophilic polyurethane-based polymer, in which: the foam has an open-cell structure in which through-holes are present between adjacent spherical cells; the spherical cells each have an average pore diameter of less than 20 μm; the through-holes each have an average pore diameter of 5 μm or less; and the foam has surface openings each having an average pore diameter of 20 μm or less in a surface thereof. | 08-22-2013 |
20130224467 | FOAM, PRODUCTION METHOD FOR FOAM, AND FUNCTIONAL FOAM - Provided are a novel foam which has a uniform fine-cell structure and is excellent in toughness and heat resistance, and a production method therefor. Also provided is a functional foam which includes the above-mentioned foam and has imparted thereto various functions. The foam includes spherical cells, in which: the spherical cells each have an average pore diameter of less than 20 μm; the foam has a density of 0.15 g/cm | 08-29-2013 |
20130344308 | RADIANT HEAT CONDUCTION-SUPPRESSING SHEET - A radiant heat conduction-suppressing sheet according to an embodiment of the present invention includes: a heat conduction-suppressing layer and a heat conductive layer. The heat conduction-suppressing layer has a heat conductivity of 0.06 W/m·K or less. The heat conductive layer has a far-infrared absorptivity at a wavelength of 7 μm to 10 μm of 0.6 or less, and a heat conductivity of 200 W/m·K or more. The radiant heat conduction-suppressing sheet is used by being fixed to a housing containing a heating element under a state in which a side of the heat conduction-suppressing layer is fixed to the housing at such a position that the heat conductive layer faces a heat radiating surface of the heating element while being free of close contact with the heating element. | 12-26-2013 |