Abstract: Provided is a novel PSA sheet having good impact resistance as well as an increased refractive index. The present invention provides an adhesively double-faced PSA sheet that consists of a PSA layer and is free of a substrate. The PSA sheet has a refractive index of 1.50 or higher as well as a breaking strength of 10 MPa or less.

Abstract: The present invention relates to a pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer containing a base polymer and a pigment, wherein the light transmittance in the wavelength range of 380 to 500 nm is 25% or less and the light transmittance in the wavelength range of 800 to 2,500 nm is 60% or more.

Abstract: The present invention relates to a pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer containing a base polymer and a pigment, the pressure-sensitive adhesive sheet having a transmittance for light having wavelengths of 380-600 nm of 25% or less, transmittance for light having wavelengths 800-2,500 nm of 60% or greater, and a change in light transmittance in the wavelength range of 600 to 800 nm of 0.1%/nm or greater.

Abstract: To provide a PSA sheet having excellent IR-blocking properties. Provided is a PSA sheet having a substrate layer as well as a PSA layer placed on one face of the substrate layer. The PSA sheet has 5% or lower light transmittance in the thickness direction in a wavelength region of 780 nm to 2500 nm.

Abstract: The present invention relates to a pressure-sensitive adhesive sheet including a pressure-sensitive adhesive layer containing a base polymer and a pigment, wherein the light transmittance in the wavelength range of 380 to 500 nm is 25% or less, the light transmittance in the wavelength range of 800 to 2,500 nm is 60% or more, L* defined by the L*a*b* color space is or less, a* is ?10 or more and 40 or less, and b* is ?20 or more and 30 or less.

Abstract: The PSA sheet provided by this invention has a PSA layer. The PSA layer comprises particles PHRI. The particles PHRI present in the PSA layer has a mean particle diameter of less than 100 nm and a standard deviation of 20 nm or less. Here, the mean particle diameter and the standard deviation are determined from a number-based particle distribution by TEM analysis.

Abstract: To provide a PSA sheet having excellent IR-blocking properties. Provided is a PSA sheet having a PSA layer. The PSA sheet has 5% or lower light transmittance in the thickness direction in a wavelength region of 780 nm to 2500 nm. The PSA sheet has 0.01% or lower light transmittance in an in-plane direction in a wavelength region of 380 nm to 2500 nm.

Abstract: Provided is a novel pressure-sensitive adhesive sheet that is capable of having good light-blocking properties while having an increased refractive index. The pressure-sensitive adhesive sheet provided by the present invention has a pressure-sensitive adhesive layer comprising a black colorant. The pressure-sensitive adhesive sheet has a refractive index of 1.50 or higher.

Abstract: Provided is a PSA sheet having limited light transmission, increased refractive indices for IR light and VIS light with less wavelength dependence of refractive index and good adhesive properties. The PSA sheet provided by this invention has a PSA layer. The PSA sheet has a total light transmittance below 80%. The PSA layer has a first face and a second face on the opposite side to the first face. The PSA layer comprises high-refractive-index particles. The high-refractive-index particles are concentrated in the first face side of the PSA layer. On the first face, the difference between the refractive index nVIS at 500 nm wavelength and the refractive index nIR at 940 nm wavelength is less than 0.03.

Abstract: Provided is a novel PSA sheet having limited light transmission and an increased refractive index. The PSA sheet provided by the present invention has a PSA layer. The PSA sheet has a total light transmittance of 80% or lower as well as a refractive index of 1.50 or higher.

Abstract: Provided is a PSA sheet having limited light transmission, an increased refractive index and good adhesive properties. The PSA sheet provided by this invention has a PSA layer. The PSA sheet has a total light transmittance below 80%. The PSA layer has a first face and a second face on the opposite side to the first face. The PSA layer comprises high-refractive-index particles. In the PSA layer, the high-refractive-index particles are concentrated in a range that extends from the first face towards the second face side and has a thickness of at least 100 nm, accounting for less than 50% of the PSA layer thickness.

Abstract: Provided is a PSA sheet that can be processed with excellent precision while providing excellent light-blocking properties in an in-plane direction and in the thickness direction in an embodiment where the support substrate has a limited thickness. The PSA sheet has a support substrate having a thickness less than 75 ?m and a PSA layer placed at least on one face of the support substrate. The PSA sheet has light transmittances of 0.04% or lower in XY and Z directions thereof.

Abstract: Provided is a PSA sheet with reduced dependence on fossil-resource-based materials while having an acrylic PSA. The PSA sheet provided includes a PSA layer. The PSA layer is formed from a PSA composition including an acrylic polymer. The acrylic polymer is a polymer of monomers that include more than 50% (by weight) acrylic monomer. At least 50% of all carbons in the PSA layer are biomass-derived carbons. The PSA sheet has a peel strength of less than 3 N/20 mm to a stainless steel plate.

Abstract: Provided is a PSA composition with greatly reduced dependence on fossil-resource-based materials while comprising an acrylic PSA. The PSA composition provided includes a PSA. The PSA is an acrylic PSA including an acrylic polymer. The acrylic polymer is formed from monomers including more than 50% (by weight) acrylic monomer. At least 50% of all carbons in the PSA are biomass-based carbons.

Abstract: Provided is a PSA sheet for use in electronic devices. The PSA sheet has a PSA layer formed from a natural rubber-based PSA. The base polymer of the PSA comprises a methyl methacrylate-modified natural rubber and at least 50% of all carbons in the PSA layer comes from biomass-derived carbons. The PSA sheet shows a displaced length of 1.0 mm/60 min or less in a heat-resistant holding power test carried out at 80° C.

Abstract: Provided is a PSA sheet that can be processed with excellent precision while providing excellent light-blocking properties in an in-plane direction and in the thickness direction in an embodiment where the support substrate has a limited thickness. The PSA sheet has a support substrate having a thickness less than 75 ?m and a PSA layer placed at least on one face of the support substrate. The PSA sheet has light transmittances of 0.04% or lower in XY and Z directions thereof.

Abstract: Provided is a PSA sheet for electronic devices with reduced dependence on fossil-resource-based materials and is also suited for use in electronic devices. The PSA sheet for use in electronic devices provided has a PSA layer formed from a natural rubber-based PSA. At least 20% by weight of all repeat units forming the base polymer of the PSA comes from an acrylic monomer and at least 50% of the total carbon content of the PSA layer is attributed to biomass-derived carbons. The PSA sheet has a shear bonding strength of 1.8 MPa or greater.