Abstract: Provided is a solid ion conductor which can be used suitably for an electrochemical device or a hydrogen gas sensor. An electrochemical device wherein a pair of electrodes are formed in the state that a solid ion conductor is sandwiched therebetween, the conductor being obtained by subjecting, to curing treatment with ultraviolet rays, a mixture of a photocurable resin and an ionic liquid having one or more cationic moieties selected from imidazolium based ions, pyridinium based ions, aliphatic amine based ions, alicyclic amine based ions and aliphatic phosphonium ions, and having one or more anionic moieties selected from boric acid ions, triflate ions, halogen based ions, and phosphonate ions.

Abstract: The present invention provides a polarizing plate protective film obtained by forming a silane coupling agent layer on one side of a cyclic olefin-based resin film; a polarizing plate wherein the protective film is laminated on one side or both sides of a polarizer through the isocyanate-based silane coupling agent layer; and a resistive touch panel using the polarizing plate.

Abstract: Disclosed herein is a hydrogen gas sensor which requires no purging, has excellent hydrogen gas selectivity, and can be produced at relatively low cost. The hydrogen gas sensor includes a detection unit having a base body composed of a solid polymer electrolyte or a carbon-containing solid polymer electrolyte obtained by dispersing a carbon material in a solid polymer electrolyte and a catalyst layer provided on one of the surfaces of the base body to perform catalytic function on contact with hydrogen gas.

Abstract: The present invention provides a polarizing plate protective film comprising a silane coupling agent layer on one surface of a siloxane-crosslinking acrylic silicone resin film; a polarizing plate comprising the protective film in such a manner that the protective film is laminated on one surface or both surfaces of the polarizer through the silane-coupling agent layer; and a resistive touch panel comprising the polarizing plate.