Abstract: There is provided an epoxy resin composition containing an epoxy resin, a solid basic compound, and a polythiol. By preparing a mixture 1 by kneading the epoxy resin with the solid basic compound, and then kneading the polythiol therewith, the dissolution of the solid basic compound into the polythiol is rate-limited to ensure the pot life, and due to a catalyst action by the dissolution of the solid basic compound at a time of heating, heat curability in a short time is realized.

Abstract: A resin composition contains a cationically curable silicone resin. an epoxy resin. and an acrylic resin. in which the acrylic resin is constituted by an acrylic monomer having an oxygen equivalent of 100 or more.

Abstract: A liquid ejection head includes a recording element substrate configured to eject a liquid, a supporting member configured to support the recording element substrate and including a supply channel configured to supply a liquid to the recording element substrate, and a channel member configured to supply a liquid to the supply channel, wherein at least one bonding surface between two of the recording element substrate, the supporting member, and the channel member is made of an epoxy resin composition containing an epoxy resin mixture and a powder curing agent, the epoxy resin mixture contains an epoxy resin that is liquid at normal temperature and a coumarone resin that is dissolvable in the epoxy resin, a weight average molecular weight of the epoxy resin mixture is 300 or more and 600 or less, and the liquid ejection head contains a cured substance of an adhesive agent containing the epoxy resin composition.

Abstract: An ink jet recording head that includes a substrate having an ejection orifice for ejecting a liquid and a member provided with a recessed portion for accommodating the substrate, the head including a gap formed between a wall of the recessed portion of the member and the substrate, and a sealing material that seals the gap, in which the sealing material contains a cured product of a composition containing at least a hydrogenated bisphenol A type epoxy resin, a solid basic compound, and polythiol.

Abstract: Provided is a method of producing a microstructure including: forming a first resin layer formed of a photosensitive resin composition (1) on a substrate, followed by pattern exposure; and laminating a second resin layer formed of a photosensitive resin composition (2) on the first resin layer having been subjected to the pattern exposure, followed by pattern exposure, wherein the photosensitive resin composition (1) and the photosensitive resin composition (2) each contain an epoxy resin and a photoacid generator, wherein at least one of the photosensitive resin composition (1) or the photosensitive resin composition (2) further contains a coumarone resin, and wherein a content of the coumarone resin is less than 30 parts by mass with respect to 100 parts by mass of a content of each of the epoxy resin of the photosensitive resin composition (1) and the epoxy resin of the photosensitive resin composition (2).

Abstract: A unit for electrostatic filter includes: a repeated structure of patterns that are respectively formed of one selected from at least two different substances having different work functions. The patterns formed of the different substances are put in contact with each other. The work functions differ by 1 eV or greater between the different substances put in contact with each other in the patterns.

Abstract: An inkjet recording head comprising a flow channel member, wherein the flow channel member is formed of a heat-cured product of a molding material comprising a resin composition comprising a thermosetting epoxy resin and a curing agent, and a filler; the filler comprises alumina and silica; and with d50 as a median diameter of the silica and with alumina A as the alumina having a median diameter of d50/4 or less, the content of the alumina A is 11 parts by mass or more relative to 100 parts by mass of the silica.

Abstract: There is provided an epoxy resin composition including: an epoxy resin, a thixotropic agent, a photobase generator, and an ether skeleton polythiol.

Abstract: An inkjet recording head comprising a flow channel member, wherein the flow channel member is formed of a heat-cured product of a molding material comprising a resin composition comprising a thermosetting epoxy resin and a curing agent, and a filler; the filler comprises alumina and silica; and with d50 as a median diameter of the silica and with alumina A as the alumina having a median diameter of d50/4 or less, the content of the alumina A is 11 parts by mass or more relative to 100 parts by mass of the silica.

Abstract: An ink jet recording head that includes a substrate having an ejection orifice for ejecting a liquid and a member provided with a recessed portion for accommodating the substrate, the head including a gap formed between a wall of the recessed portion of the member and the substrate, and a sealing material that seals the gap, in which the sealing material contains a cured product of a composition containing at least a hydrogenated bisphenol A type epoxy resin, a solid basic compound, and polythiol.

Abstract: A unit for electrostatic filter includes: a repeated structure of patterns that are respectively formed of one selected from at least two different substances having different work functions. The patterns formed of the different substances are put in contact with each other. The work functions differ by 1 eV or greater between the different substances put in contact with each other in the patterns.

Abstract: There is provided an epoxy resin composition containing an epoxy resin, a solid basic compound, and a polythiol. By preparing a mixture 1 by kneading the epoxy resin with the solid basic compound, and then kneading the polythiol therewith, the dissolution of the solid basic compound into the polythiol is rate-limited to ensure the pot life, and due to a catalyst action by the dissolution of the solid basic compound at a time of heating, heat curability in a short time is realized.

Abstract: There is provided an epoxy resin composition including: an epoxy resin, a thixotropic agent, a photobase generator, and an ether skeleton polythiol.

Abstract: In an ink jet recording head including an electric wiring substrate having an electric contact terminal for receiving an electric signal from an ink jet apparatus, an electric wiring tape which electrically connects the electric wiring substrate and a recording element substrate to each other, and an adhesive sheet which fixes the electric wiring substrate and the electric wiring tape to each other, the electric wiring tape and the electric wiring substrate are fixed to each other with the adhesive sheet containing a polyester resin and an epoxy resin.

Abstract: Provided is an ink jet recording head having a flow path member. The flow path member is made of a thermoset product of a thermosetting molding composition containing a solid epoxy resin composition containing an epoxy resin and a phenolic resin, each solid at ordinary temperatures, and an alumina filler.

Abstract: A liquid ejection head includes a substrate having an ejection opening through which a liquid is ejected, a recessed member having a wall defining a recess in which the substrate is disposed away from the wall with a gap therebetween, and a sealing member filling the gap. The sealing member includes a cured product of a composition containing a first polyol compound, an isocyanate compound having an isocyanate group, and a second polyol compound that is more reactive with the isocyanate group than the first polyol compound.

Abstract: In an ink jet recording head including an electric wiring substrate having an electric contact terminal for receiving an electric signal from an ink jet apparatus, an electric wiring tape which electrically connects the electric wiring substrate and a recording element substrate to each other, and an adhesive sheet which fixes the electric wiring substrate and the electric wiring tape to each other, the electric wiring tape and the electric wiring substrate are fixed to each other with the adhesive sheet containing a polyester resin and an epoxy resin.

Abstract: Provided is an ink jet recording head having a flow path member. The flow path member is made of a thermoset product of a thermosetting molding composition containing a solid epoxy resin composition containing an epoxy resin and a phenolic resin, each solid at ordinary temperatures, and an alumina filler.

Abstract: A liquid ejection head for ejecting a liquid, including a flow passage member, which is composed of a first resin and which is provided with a flow passage configured to come into contact with the liquid, and a plurality of resin-coated members having a core-sheath structure composed of a filler constituting an inner core and a second resin constituting an outer core, wherein the plurality of the resin-coated members are contained in the flow passage member.

Abstract: A liquid ejection head includes a substrate having an ejection opening through which a liquid is ejected, a recessed member having a wall defining a recess in which the substrate is disposed away from the wall with a gap therebetween, and a sealing member filling the gap. The sealing member includes a cured product of a composition containing a first polyol compound, an isocyanate compound having an isocyanate group, and a second polyol compound that is more reactive with the isocyanate group than the first polyol compound.