Abstract: A composite material molded article that includes soft magnetic powder; and resin containing the soft magnetic powder in a dispersed state, wherein when the composite material molded article is divided into nine portions in total such that, out of surfaces of the composite material molded article, an interlinkage surface that intersects a magnetic flux excited in the composite material molded article is equally divided into three portions in a vertical direction and three portions in a horizontal direction, in these portions, a density decrease ratio Dd of a density of a portion having a minimum density Dmin to a density of a portion having a maximum density Dmax, namely {(Dmax?Dmin)/Dmax}×100, is 1.2% or less.

Abstract: Provided is a reactor that can be manufactured without holding an assembly when the assembly is fixed to a mounting plate via a bonding layer. The reactor includes a coil, a magnetic core, an interposed insulating member, a metal mounting plate, and a bonding layer. The interposed insulating member is provided with an inwardly interposed portion, a first interposed end face portion, and a second interposed end face portion. The interposed insulating member is obtained by combining a plurality of divided pieces that includes a divided piece having the first interposed end face portion, and a divided piece having the second interposed end face portion. The divided pieces are respectively provided with engaging portions that engage with each other, and the first interposed end face portion and the second interposed end face portion are each provided with a leg piece that separates the coil from the mounting plate.

Abstract: A reactor including: a coil that includes a winding portion that is constituted by a plurality of turns formed by spirally winding a winding wire; a magnetic core that includes a portion that is located in the winding portion; a casing that houses a combined body that includes the coil and the magnetic core; and a filling material that contains resin and fills the casing, wherein the winding portion includes an exposed portion that protrudes from an opening edge of the casing, the filling material includes an embedding portion in which a portion of the combined body is embedded and that has a surface located below or at the same level as the opening edge of the casing, and turn interposed portions that are interposed between the turns in the exposed portion, and surfaces of the turn interposed portions are located above a surface of the embedding portion.

Abstract: Provided is soft magnetic powder constituted by an Fe alloy containing Si, in which soft magnetic particles of the soft magnetic powder include a SiO2 layer formed on a surface of the particles, and a surface layer formed directly on the SiO2 layer. The surface layer includes a first material that constitutes a matrix and a second material that is dispersed in the matrix. The first material is silicone or phosphate, and the second material is silicone or phosphate and is different from the first material.

Abstract: Provided is a composite material molded article including soft magnetic powder and resin containing the soft magnetic powder in a dispersed state. The composite material molded article includes a parting line corresponding to a parting surface of a mold for molding the composite material molded article, and an inner core portion to be arranged inside a coil. A peripheral surface includes surfaces along a circumferential direction of a magnetic flux excited in the inner core portion by the coil, and the parting line is formed to split a peripheral direction of the peripheral surface.

Abstract: A reactor including: a coil that includes a winding portion; a magnetic core that includes an inner core portion that is located inside the winding portion and an outer core portion that is located outside the winding portion; an inner interposed member that is interposed between an inner surface of the winding portion and the inner core portion; and an end surface interposed member that is interposed between an end surface of the winding portion and the outer core portion. The inner interposed member is provided with first positioning portions that engage with the end surface interposed member and are located so as to respectively face a first pair of surfaces of the outer core portion to position the outer core portion, the first pair of surfaces being composed of a pair of surfaces that face each other.

Abstract: Provided is a reactor that can be manufactured without holding an assembly when the assembly is fixed to a mounting plate via a bonding layer. The reactor includes a coil, a magnetic core, an interposed insulating member, a metal mounting plate, and a bonding layer. The interposed insulating member is provided with an inwardly interposed portion, a first interposed end face portion, and a second interposed end face portion. The interposed insulating member is obtained by combining a plurality of divided pieces that includes a divided piece having the first interposed end face portion, and a divided piece having the second interposed end face portion. The divided pieces are respectively provided with engaging portions that engage with each other, and the first interposed end face portion and the second interposed end face portion are each provided with a leg piece that separates the coil from the mounting plate.

Abstract: Provided is a resin composition for an adhesive comprising a polyurethane resin containing a carboxyl group, having specific range of an acid value having specific range of a number average molecular weight and having specific range of a glass transition temperature a polyester resin having specific range of a number average molecular weight and having specific range of a glass transition temperature; an epoxy resin containing a nitrogen atom; and an epoxy resin having a dicyclopentadiene skeleton, in which a content rate of the polyurethane resin to a sum of the polyurethane resin and the polyester resin is 70 to 95 percent by mass, a content rate of the total epoxy resin contained in the resin composition to the sum of the polyurethane resin and the polyester resin is 5 to 30 percent by mass.

Abstract: Provided is a resin composition for an adhesive comprising a polyurethane resin containing a carboxyl group, having specific range of an acid value having specific range of a number average molecular weight and having specific range of a glass transition temperature a polyester resin having specific range of a number average molecular weight and having specific range of a glass transition temperature; an epoxy resin containing a nitrogen atom; and an epoxy resin having a dicyclopentadiene skeleton, in which a content rate of the polyurethane resin to a sum of the polyurethane resin and the polyester resin is 70 to 95 percent by mass, a content rate of the total epoxy resin contained in the resin composition to the sum of the polyurethane resin and the polyester resin is 5 to 30 percent by mass.

Abstract: [Object] To provide a thermosetting resin used for the manufacture of layered products for fibrous use, electrical products and automobile parts or, particularly, used for multilayered circuit board and flat cables, being suitable for a latent thermosetting adhesive which shows, upon adhesion, the fluidity necessary for the adhesion but quickly hardens by heat or light and also being excellent in resistance to heat upon soldering; to provide a resin expressing an excellent flame-retarding property in spite of non-use of halogen, and expressing latent hardening properties to quickly harden by heat and light; and to provide an adhesive and a resist agent comprising the same.