Abstract: A pressure-sensitive adhesive sheet contains at least a pressure-sensitive adhesive layer containing an acrylic pressure-sensitive adhesive containing an acrylic polymer composition containing an acrylic polymer as a main component and a tackifier containing a tackifying resin as a main component, wherein reflection rate and attached amount in the fogging test in accordance with German Industrial Standard DIN 75201 are 70% or more and 2.0 mg or less, respectively. In the acrylic pressure-sensitive adhesive which forms the pressure-sensitive adhesive layer, a ratio of components having a molecular weight of 300 or less is preferably 4.2% by weight or less based on the total amount of solid matter of the acrylic pressure-sensitive adhesive. Furthermore, in the tackifying resin in the tackifier, a ratio of components having a molecular weight of 300 or less is suitably 4.2% by weight or less based on the total amount of solid matter of the tackifying resin.

Abstract: The present invention provides a water-dispersed acrylic PSA composition suitable for forming a PSA sheet. The PSA composition contains 100 parts by weight of an acrylic copolymer with a Tg of ?70° C. to ?50° C. obtained by polymerization of a monomer starting material containing 60 wt % or more of an alkyl (meth)acrylate with a C8-12 alkyl group and 5 wt % or less of a radical polymerizable monomer with a carboxyl group. When an adhesive sheet is formed therefrom, it exhibits an average SUS adhesive strength of 11 N/20 mm or greater, PP adhesive strength of 8.5 N/20 mm or greater, 80° C. hold time of 1 hour or longer, and gap height of 10 mm or less in a curved surface adhesion test.

Abstract: The present invention provides a water-dispersed acrylic PSA composition suitable for forming a PSA sheet. The PSA composition contains 100 parts by weight of an acrylic copolymer with a Tg of ?70° C. to ?50° C. obtained by polymerization of a monomer starting material containing 60 wt % or more of an alkyl (meth)acrylate with a C8-12 alkyl group and 5 wt % or less of a radical polymerizable monomer with a carboxyl group. When an adhesive sheet is formed therefrom, it exhibits an average SUS adhesive strength of 11 N/20 mm or greater, PP adhesive strength of 8.5 N/20 mm or greater, 80° C. hold time of 1 hour or longer, and gap height of 10 mm or less in a curved surface adhesion test.

Abstract: An adhesive sheet is provided in which properties that cause corrosion of a non-contacting metal are inhibited. The adhesive sheet is provided with a pressure-sensitive adhesive layer formed from an aqueous dispersion type adhesive composition. The pressure-sensitive adhesive composition contains an aqueous dispersion type acrylic polymer synthesized using a chain transfer agent that does not have sulfur as a composite element thereof. The amount of sulfur-containing gas (as SO42?) released from the pressure-sensitive adhesive sheet in the case of heating for 1 hour at 85° C. is 0.043 ?g/1 cm2 or less, adhesive strength on an ABS sheet is 10 N/20 mm or more, and holding time as determined in an 80° C. cohesive strength test is 1 hour or more.

Abstract: A pressure-sensitive adhesive sheet has a high adhesiveness and an excellent terminal peeling resistance as well as exhibits extremely small diffusing amounts of formaldehyde and toluene. The pressure-sensitive adhesive sheet contains at least a pressure-sensitive adhesive layer of a water-dispersion type acrylic pressure-sensitive adhesive containing a water-dispersion type acrylic polymer and a tackifying resin-containing emulsion, wherein a diffusing amount of formaldehyde is less than 3 ?g/m3 and a diffusing amount of toluene is 10 ?g/g or less. As the tackifying resin-containing emulsion, a tackifying resin-containing emulsion prepared using substantially no organic solvents or a tackifying resin-containing emulsion prepared using a material other than aromatic hydrocarbon-based organic solvents can be suitably employed.

Abstract: A pressure-sensitive adhesive sheet according to the present invention is a double-sided pressure-sensitive adhesive sheet having a plastic substrate and pressure-sensitive adhesive layers provided on each side thereof. The pressure-sensitive adhesive layers are formed from a water-dispersed pressure-sensitive adhesive composition having an acrylic polymer dispersed in an aqueous solvent. An anchor layer formed from an anchor composition containing polyester-polyurethane dissolved in an organic solvent is provided between at least a first side of the substrate and the pressure-sensitive adhesive layer.

Abstract: The present invention provides a water-dispersed acrylic PSA composition suitable for forming a PSA sheet. The PSA composition contains 0.5 to 15 parts by weight of an acrylic copolymer (polymer H) with a Tg of 30° C. to 120° C. in relation to 100 parts by weight of an acrylic copolymer (polymer L) with a Tg of ?70° C. to ?50° C. The polymer L is obtained by polymerization of a monomer starting material comprising 60 wt % or more of an alkyl (meth)acrylate with a C8-C12 alkyl group; and 0.5 to 10 wt % of a radical polymerizable monomer with a carboxyl group.

Abstract: A pressure-sensitive adhesive sheet has a high adhesiveness and an excellent terminal peeling resistance as well as exhibits extremely small diffusing amounts of formaldehyde and toluene. The pressure-sensitive adhesive sheet contains at least a pressure-sensitive adhesive layer of a water-dispersion type acrylic pressure-sensitive adhesive containing a water-dispersion type acrylic polymer and a tackifying resin-containing emulsion, wherein a diffusing amount of formaldehyde is less than 3 ?g/m3 and a diffusing amount of toluene is 10 ?g/g or less. As the tackifying resin-containing emulsion, a tackifying resin-containing emulsion prepared using substantially no organic solvents or a tackifying resin-containing emulsion prepared using a material other than aromatic hydrocarbon-based organic solvents can be suitably employed.

Abstract: A light-emitting device includes a substrate having a front surface on which a semiconductor light-emitting element is mounted. A front cover is provided which thermally contacts the front surface of the substrate at a periphery of the semiconductor light-emitting element and is disposed on a front side of the substrate. A heat conduction path is formed along which heat generated by the semiconductor light-emitting element is conducted in order of the substrate and the front cover and the heat is radiated from a front surface of the front cover, so that a heat radiation property from a front surface of the light-emitting device is improved.

Abstract: A pressure-sensitive adhesive (PSA) composition comprising an aqueous dispersion solution containing an aqueous solvent and a PSA constituent dispersed in the aqueous solvent is provided. The PSA constituent contains an acrylic polymer and a tackifier L having a viscosity of 2000 Pa·s or lower at 30° C. In addition, the PSA constituent contains a surfactant S containing in the molecular structure an aryloxy group serving as a hydrophobic group and an anionic or non-ionic hydrophilic group. Here, the aryloxy group is a phenyloxy group having at least one substituent having an aromatic ring. Such a PSA composition has excellent dispersion stability, as well as rough-surface adhesion property and water-resistance of the PSA sheet formed from the composition.

Abstract: A PSA sheet 40 including a PSA layer formed from an aqueous PSA composition and having adequate bonding workability with respect to elastic foams is provided. When this PSA sheet 40 is pressure-bonded to a flexible urethane foam 42 of 10 mm in thickness under conditions where the urethane foam 42 is compressed to a thickness of 5 mm, the 180° peel adhesive strength 30 minutes after the pressure-bonding is 1.5 N/20 mm or greater. ECS (gray), a product from Inoac Corporation, is used as the flexible urethane foam 42.

Abstract: The present invention provides a pressure-sensitive adhesive (PSA) sheet provided with a non-toluene-based PSA layer and having superior adhesion properties. A PSA sheet 8 is provided with a release liner 87 having, on at least a first side thereof, a release layer composed of a silicone-based release agent, and a PSA layer 85 provided on the release layer. A PSA composition that composes the PSA layer 85 contains a water-dispersed acrylic polymer and a tackifier resin emulsion prepared without using an organic solvent. The release layer has an amount of silicone that transfers to Single-Sided Adhesive Tape No. 31B manufactured by Nitto Denko Corporation of 10 kcps or less per unit surface area equivalent to a circle having a diameter of 30 mm when determined as X-ray intensity of silicon by X-ray fluorescence analysis.

Abstract: The present invention provides a pressure-sensitive adhesive (PSA) sheet provided with a non-toluene-based PSA layer and having superior adhesion properties. A PSA sheet 8 is provided with a release liner 87 having, on at least a first side thereof, a release layer composed of a silicone-based release agent, and a PSA layer 85 provided on the release layer. A PSA composition that composes the PSA layer 85 contains a water-dispersed acrylic polymer and a tackifier resin emulsion prepared using a solvent that does not contain an aromatic hydrocarbon-based organic solvent. The release layer has an amount of silicone that transfers to Single-Sided Adhesive Tape No. 31B manufactured by Nitto Denko Corporation of 10 kcps or less per unit surface area equivalent to a circle having a diameter of 30 mm when determined as X-ray intensity of silicon by X-ray fluorescence analysis.

Abstract: The present invention provides a PSA sheet provided with a release liner having, on at least a first side thereof, a release layer composed of a silicone-based release agent, and a PSA layer provided on the release layer and containing an acrylic polymer synthesized in ethyl acetate as an adhesive component thereof. The release layer has an amount of silicone that transfers to Single-Sided Adhesive Tape No. 31 B manufactured by Nitto Denko Corporation of 10 kcps or less per unit surface area equivalent to a circle having a diameter of 30 mm when determined as X-ray intensity of silicon by X-ray fluorescence analysis. A mark of a color selected from green and blue is displayed on the back of the PSA sheet.

Abstract: A double-sided pressure-sensitive adhesive tape for fixing a decorative sheet for speaker, which is extremely small in the generation of VOC, is provided. The present invention relates to a double-sided pressure-sensitive adhesive tape for fixing a decorative sheet for speaker of the invention, comprising a substrate, a pressure-sensitive adhesive layer A disposed on one side of the substrate and a pressure-sensitive adhesive layer B disposed on the other side of the substrate, wherein a total volatile organic compound amount (TVOC amount) is 300 ?g/g or less, a diffusion amount of formaldehyde is 3 ?g/m3 or less, and a diffusion amount of toluene is 10 ?g/g or less. A base polymer of the layer A is preferably formed by solution polymerization using a solvent selected from a solvent composed of only ethyl acetate and a mixed solvent having a proportion of ethyl acetate of 90% by weight or more.

Abstract: A pressure-sensitive adhesive (PSA) sheet, in which offending odors from viable microorganisms have been suppressed to a level that cannot be detected by the senses, is provided. This PSA sheet has a PSA layer which contains as a base polymer an acrylic polymer. When PCR amplification of DNA extracted from the PSA layer is carried out with 16S rDNA as the target, and the fluorescence intensity is measured after, first, isolating the amplified 16S rDNA region by gel electrophoresis, then staining with SYBR Gold and irradiating with excitation light having a wavelength of 302 nm and an intensity of 500 ?W/cm2, the fluorescence intensity at a wavelength range of 548 nm to 630 nm measured for a band containing the 16S rDNA region is less than 5.5×105 per gram of a PSA sample used in measurement.

Abstract: A water-dispersed pressure-sensitive adhesive (PSA) composition having a low perishability is provided. This PSA composition includes as a base polymer an acrylic polymer and, when held in a 30° C. atmosphere for 5 days, the number of viable microorganisms present per milliliter of the composition following such storage is less than 106 cells. Such a composition may be produced by employing viable cell-free water containing essentially no viable microorganisms as, of the water used in the course of production, at least the water used in a step subsequent to a final step in which the composition is held continuously at a temperature of at least 60° C. for at least 30 minutes.

Abstract: A lighting device includes a printed wiring board, a plurality of light-emitting elements, a sealing member, and a color conversion unit, and an adhesive layer. The sealing member has light transmitting properties and seals the light-emitting elements mounted on the printed wiring board. The color conversion unit includes a cover member of light transmitting properties, and a fluorescent substance layer provided on the inner surface of the cover member. The adhesive layer has light-transmitting properties, and adheres the sealing member to the fluorescent substance layer of the color conversion unit in an airtight manner.

Abstract: A new and distinct cultivar of Verbena plant named ‘AKIV572-1’, characterized by its compact, semi-upright, mounding to trailing plant habit; vigorous growth habit; freely branching habit; freely flowering habit; light violet-colored flowers that are held above and beyond the foliar plane; and resistance to Powdery Mildew.

Abstract: A new and distinct cultivar of Verbena plant named ‘AKIV571-1’, characterized by its compact, semi-upright, mounding to trailing plant habit; vigorous growth habit; freely branching habit; freely flowering habit; violet-colored flowers that are held above and beyond the foliar plane; and resistance to Powdery Mildew.