Abstract: A composition that can form a photoelectric conversion layer having an excellent adhesion to a substrate is provided without a sintering step. The composition comprises at least a semiconductor (e.g., a titanium oxide particle) and an ionic polymer (e.g., a fluorine-series resin having a sulfo group), and the ratio of the ionic polymer relative to 1 part by weight of the semiconductor is 0.1 to 30 parts by weight. The composition may further contain a dye (a sensitizing dye). The photoelectrically convertible layer can be formed by coating a conductive substrate with the composition without sintering the semiconductor.

Abstract: An object is to provide a sealant composition for electrical and electronic parts that has excellent light resistance, heat resistance, heat shock resistance, and gas barrier properties, and an LED device using the same, and the composition contains a polyvalent metal compound containing a metallic element capable of having an ionic valance of 2 or more and a fluororesin including a functional group capable of forming a metal crosslink with the metallic element contained in the polyvalent metal compound.

Abstract: A composition that can form a photoelectric conversion layer having an excellent adhesion to a substrate is provided without a sintering step. The composition comprises at least a semiconductor (e.g., a titanium oxide particle) and an ionic polymer (e.g., a fluorine-series resin having a sulfo group), and the ratio of the ionic polymer relative to 1 part by weight of the semiconductor is 0.1 to 30 parts by weight. The composition may further contain a dye (a sensitizing dye). The photoelectrically convertible layer can be formed by coating a conductive substrate with the composition without sintering the semiconductor.

Abstract: Provided is a photocatalytic coating in which the coating per se is hardly eroded even when a photocatalyst is excited and a coating surface having strong hydrophobic tendency can be formed. The photocatalytic coating is prepared by dispersing or dissolving at least a photocatalyst, a tetrafluoro-ethylene-based resin obtained by graft polymerization of a sulfonic acid, a compound containing metal ion having an ionic radius not less than an ionic radius of calcium and/or complex ion having an ionic radius not less than the ionic radius of calcium into a solvent. Further, hydroxide is used as the compound containing the metal ion or an electrically neutral surfactant is added to the photocatalytic coating.

Abstract: Provided is a photocatalytic coating in which the coating per se is hardly eroded even when a photocatalyst is excited and a coating surface having strong hydrophobic tendency can be formed. The photocatalytic coating is prepared by dispersing or dissolving at least a photocatalyst, a tetrafluoro-ethylene-based resin obtained by graft polymerization of a sulfonic acid, a compound containing metal ion having an ionic radius not less than an ionic radius of calcium and/or complex ion having an ionic radius not less than the ionic radius of calcium into a solvent. Further, hydroxide is used as the compound containing the metal ion or an electrically neutral surfactant is added to the photocatalytic coating.