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: There is provided a pressure-sensitive adhesive (PSA) sheet with the property of corroding a metal not in contact therewith suppressed. This PSA sheet is provided with a PSA layer formed from a water-dispersed PSA composition. The PSA composition contains a water-dispersed acrylic polymer synthesized using a sulfur-containing chain transfer agent. Moreover, in a gas generation test whereby the PSA sheet is heated at 85° C. for one hour, the emission of sulfur-containing gas is 0.043 ?g or less per 1 cm2 surface area of the sheet, when converted to SO42?.

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 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 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 method of producing a double-sided pressure-sensitive adhesive (PSA) sheet having PSA layers on both sides of a nonwoven fabric substrate is provided. This method includes the steps of: preparing an emulsion-type PSA composition that satisfies both of the following conditions: a viscosity at 30° C. of 0.1 to 3 Pa·s and a solid content of 50 to 70 mass %. Also included is a step of forming a PSA layer (for example, a second PSA layer) by directly coating at least one side (for example, the second side) of the nonwoven fabric this PSA composition.

Abstract: Disclosed is a novel therapeutic agent which is useful for the prevention or treatment of alopecia. Specifically disclosed is a prophylactic or therapeutic agent for alopecia, which comprises 1-[2-((2S)-2-{5-[(3,4-dimethoxyphenoxy)methyl]-1,2,4-oxadiazol-3-yl}pyrrolidin-1-yl)-1,1-difluoro-2-oxoethyl]-3,3,5,5-tetramethylcyclohexanol as an active ingredient.

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: Provided is a PSA sheet with low toluene and total volatile organic compound (TVOC) emissions as well as low unpleasant odor level felt by users. The PSA sheet comprises a PSA layer formed of a PSA composition comprising an acrylic polymer emulsion and a tackifier resin emulsion; the toluene and TVOC emissions are at most 20 ?g and at most 150 ?g, respectively; in a sensory test, 90% of participants evaluate that the unpleasantness of odors emitted from the PSA sheet is less than that of toluene at a prescribed concentration.

Abstract: An agent for improving fine wrinkles contains an oil based preparation for external use for skins, the oil based preparation containing: (i) 50% by mass to 95% by mass of an oil constituent, which contains 10% by mass to 100% by mass of a solid or semisolid oil constituent, and (ii) 5% by mass to 50% by mass of particles, the oil based preparation having occlusion characteristics of at least 50%. A beauty culture method for improving fine wrinkles comprises applying the oil based preparation for external use for skins onto a skin.

Abstract: The present invention provides an aqueous pressure-sensitive adhesive (PSA) composition suitable for a PSA sheet that exhibits high levels of adhesiveness, high-temperature cohesive strength and edge peel resistance in a good balance and for preparation of the same. The composition is composed primarily of an acrylic polymer obtained by polymerizing a starting monomer material containing an alkyl(meth)acrylate as a main monomer and a silanol-forming monomer. The Mw of the polymer is 65×104 to 100×104. The starting monomer material without the silanol-forming monomer are polymerized to produce a polymer having a gel fraction of 7 to 17 mass %. The composition gives a post-crosslink PSA having a gel fraction of 20 to 55 mass %.

Abstract: Provided are a pressure-sensitive adhesive (PSA) sheet having excellent foam repulsion resistance and an aqueous PSA composition suitable for preparing this sheet. The composition primarily comprises an acrylic polymer obtained by polymerizing a starting monomer material containing an alkyl (meth)acrylate as a main monomer and both acrylic acid and methacrylic acid. The acrylic polymer preferably has a weight average molecular weight of 65×104 to 100×104. The starting monomer material is preferred to further contain a silanol-forming monomer and polymerized without the silanol-forming monomer to produce a polymer having a gel fraction of 7 to 17 mass %. The posterosslink PSA preferably has a gel fraction of 20 to 55 mass %.

Abstract: A piezoelectric bimorph element two piezoelectric elements to produce an electromotive force by imparting a stress to respective piezoelectric elements. The piezoelectric bimorph element is arranged in an oscillator such that the piezoelectric bimorph element is deformed in the electromotive force generating direction. An electrode having a predetermined area connected with a good electric conductor which is connected to conduct a current generated from the piezoelectric bimorph element is arranged at a patting part interlocked with the oscillator to oscillate. An electrode of opposite pole is connected with the piezoelectric bimorph element through the good electric conductor and arranged at a handle to be coupled with the oscillator, and a rectifier for rectifying an AC electromotive force generated by oscillating the oscillator is arranged to connect the good electric conductors which are connected with both electrodes.

Abstract: Provided are a double-sided PSA sheet comprising a PSA layer formed by directly applying an aqueous dispersion-type PSA composition to a non-woven fabric substrate, wherein the layer has a highly smooth surface; and a method for producing the same. In this method, an aqueous dispersion-type PSA composition is applied to at least a first side of the non-woven fabric substrate and the composition is allowed to dry to form a PSA layer. A non-woven fabric of 15 ?m to 70 ?m in thickness, 0.3 to 0.6 g/cm3 in bulk density, and 0.7 sec to 2 sec in air resistance (Gurley) when measured for 8 layers the non-woven fabric substrate is used as the non-woven fabric substrate.

Abstract: The present invention provides a double-sided pressure-sensitive adhesive tape or sheet for use in wiring circuit board, which includes a pressure-sensitive adhesive layer formed by a pressure-sensitive adhesive composition containing an acrylic polymer as a main component, in which the double-sided pressure-sensitive adhesive tape or sheet has an amount of total outgas of 250 ?g/g or less and a diffusion amount of toluene of 10 ?g/g or less. The double-sided pressure-sensitive adhesive tape or sheet has a small generating amount of VOC as well as excellent punching processing property and anti-repulsion property.

Abstract: A double-sided PSA sheet 11 comprises PSA layers 2 formed of a water-dispersed PSA composition and a non-woven fabric substrate 1 to support the PSA layers. The substrate 1 contains hemp as a fiber component and is processed with an impregnating agent selected from a group consisting of viscose and starches. The substrate 1 has a grammage of 7 g/m2 to 17 g/m2. The sheet 11 provides excellent adhesive performance and can be removed without substrate failure. Therefore, it is suitable, for example, for fastening recyclable parts.

Abstract: A method is provided for producing a double-sided pressure-sensitive adhesive (PSA) sheet of a nonwoven fabric substrate, whereby the inherent performance of the PSA is more fully exploited using an aqueous dispersion-type PSA composition. This method comprises preparing an aqueous dispersion-type PSA composition and a nonwoven fabric substrate serving as a support. The method also comprises forming PSA layers which impregnate the substrate and which are obtained by drying the composition. These PSA layers impregnate the substrate so that the area of gaps observed in a vertical cross-section perpendicular to the machine direction of the substrate is about 500 ?m2/400 ?m or less.

Abstract: A method of enhancing percutaneous absorption of a water-soluble agent comprises the steps of: applying a preparation for external use on skin, which preparation contains a water-soluble agent, onto skin, and applying an oil based composition for external use on skin onto the preparation for external use on skin, which preparation has been applied onto the skin. The composition contains 50% by mass to 95% by mass of an oil constituent, which contains 10% by mass to 100% by mass of a solid or semisolid oil constituent, and 5% by mass to 50% by mass of particles. The composition has occlusivity of at least 50%.

Abstract: A piezoelectric bimorph element two piezoelectric elements to produce an electromotive force by imparting a stress to respective piezoelectric elements. The piezoelectric bimorph element is arranged in an oscillator such that the piezoelectric bimorph element is deformed in the electromotive force generating direction. An electrode having a predetermined area connected with a good electric conductor which is connected to conduct a current generated from the piezoelectric bimorph element is arranged at a patting part interlocked with the oscillator to oscillate. An electrode of opposite pole is connected with the piezoelectric bimorph element through the good electric conductor and arranged at a handle to be coupled with the oscillator, and a rectifier for rectifying an AC electromotive force generated by oscillating the oscillator is arranged to connect the good electric conductors which are connected with both electrodes.

Abstract: There provided a pressure-sensitive adhesive (PSA) composition constituting a PSA layer, which may exhibit a plurality of properties in a well-balanced manner, and a PSA sheet including the PSA layer. The composition is an aqueous PSA composition in which an acrylic polymer serves as a main component and the acrylic polymer is dispersed in water, and contains: A) acrylic polymer obtained by polymerizing a monomer raw material including alkyl(meth)acrylate as a main monomer, a first functional monomer having a first functional group to react with a hydrazino group, and a second functional monomer having a second functional group to react with a carbodiimide group; B) a hydrazine-based crosslinking agent; and C) a carbodiimide-based crosslinking agent.