Abstract: Provided are a tire rubber composition capable of producing a pneumatic tire having excellent rigidity and wear resistance and a pneumatic tire using the same. The tire rubber composition includes 100 parts by mass of a diene rubber (A) and from 1 to 50 parts by mass of elastic microparticles (B), wherein the elastic microparticles (B) have a form of microparticles obtained by crosslinking a crosslinkable oligomer or polymer (b1) in water or an organic solvent, or in the diene rubber (A), and have an average particle size of from 0.001 to 100 ?m, the JIS A hardness of a cured product obtained by crosslinking the crosslinkable oligomer or polymer (b1) without use of water, the organic solvent or the diene rubber (A) is greater than 45, and the elongation of the cured product is 200% or greater.

Abstract: An object of the present invention is to provide an adhesive composition for a high-power optical fiber having a low pull-in amount. The adhesive composition for a high-power optical fiber of the present invention contains: a compound (A) having an aromatic ring and a reactive silicon-containing group; a glycidyl compound (B); and a compound (C) having a silsesquioxane cage structure.

Abstract: An object of the present invention is to provide an adhesive composition for a polarization-maintaining optical fiber exhibiting a high extinction ratio. The adhesive composition for a polarization-maintaining optical fiber of the present invention contains: a compound (A) having an aromatic ring and a reactive silicon-containing group; a glycidyl compound (B); and a compound (C) having a silsesquioxane ladder structure.

Abstract: An object of the present invention is to provide an adhesive composition for a high-power optical fiber having a low pull-in amount. The adhesive composition for a high-power optical fiber of the present invention contains: a compound (A) having an aromatic ring and a reactive silicon-containing group; a glycidyl compound (B); and a compound (C) having a silsesquioxane cage structure.

Abstract: An object of the present invention is to provide an adhesive composition for a polarization-maintaining optical fiber exhibiting a high extinction ratio. The adhesive composition for a polarization-maintaining optical fiber of the present invention contains: a compound (A) having an aromatic ring and a reactive silicon-containing group; a glycidyl compound (B); and a compound (C) having a silsesquioxane ladder structure.

Abstract: An electronic device includes a circuit board on which an electronic component is mounted and a ground pattern surrounding the electronic component is formed, a shield case which is formed by drawing a mesh material formed by weaving a conductive wire, stores the electronic component, and has a box-like room with a peripheral portion for ground around an open end, and a housing which incorporates the circuit board and shield case and has a rib formed at a predetermined position on the inner surface in order to bring the peripheral portion into press contact with the ground pattern.