Abstract: A compound having an uretonimine group contains, as a structural unit, a carbodiimide compound derived from at least one of an aliphatic diisocyanate and an aromatic diisocyanate, and also contains an isocyanate compound as a structural unit, wherein the residue obtained by removing an isocyanate group from the isocyanate compound and the residue obtained by removing a carbodiimide group from the carbodiimide compound are different.

Abstract: Provided is a semiconductor device having a switching element in which a first main electrode plate, a second main electrode plate and a control electrode plate are provided on one surface, a first main electrode being connected to the first main electrode plate, a second main electrode being connected to the second main electrode plate, and a control electrode being connected to the control electrode plate, and a semiconductor module including the semiconductor device.

Abstract: Provided is a pellicle, including a frame on which a pellicle film is placed and a mask adhesive layer which is placed on the frame, wherein when an attachment portion S1 of the adhesive layer to a quartz mask is irradiated with xenon (Xe) excimer lamp light from a back surface of the mask for 2 minutes and the pellicle is then peeled off, a residual ratio (residual area of the adhesive layer on a quartz mask/area of the attachment portion S1 of the adhesive layer) of the adhesive layer is 0.001 to 5.0%.

Abstract: A piezoelectric sound generation component is provided that includes a piezoelectric vibration plate, a case with a case body and a lid that accommodates the piezoelectric vibration plate in an inner space formed by the case body and the lid, and a pin terminal provided to the lid so that the pin terminal is abutted on the piezoelectric vibration plate. The case body has a first top wall and a first circumferential wall. The lid has a second top wall, a second circumferential wall, and a protruding portion that contacts the first circumferential wall of the case body. The protruding portion has a first surface that is abutted on a contact surface, facing the first top wall, of the first circumferential wall and a second surface that couples the first surface to the second circumferential wall and is separated from the first circumferential wall.

Abstract: A polyisocyanate composition having at least one isocyanate compound selected from an aliphatic isocyanate and an alicyclic isocyanate as a skeleton, wherein an average value of a total number of isocyanate groups blocked with a blocking agent and not blocked with a blocking agent per polyisocyanate molecule is 2 or more, and among the isocyanate groups in the polyisocyanate composition, 1 mol % or more and 99 mol % or less are blocked with a blocking agent, and the like.

Abstract: The present invention provides a blocked polyisocyanate composition containing blocked polyisocyanate component (A) and blocked polyisocyanate component (B), wherein when a nonionic hydrophilic group content of blocked polyisocyanate component (A) is represented by (a) mass % and a nonionic hydrophilic group content of blocked polyisocyanate component (B) is represented by (b) mass %, a relationship of 0?(b)<(a) is satisfied.

Abstract: A blocked polyisocyanate composition containing a blocked polyisocyanate obtained from a polyisocyanate and at least one blocking agent, wherein the blocking agent contains a compound represented by general formula (I) shown below, and the amount of methane tetracarbonyl structures represented by general formula (II) shown below, relative to the total molar amount within the blocked polyisocyanate of bonded structures in which the compound represented by general formula (I) is bonded to the polyisocyanate, is at least 0.5 mol % but not more than 10 mol %.

Abstract: This blocked polyisocyanate composition contains a block polyisocyanate derived from one or more diisocyanates, an active hydrogen compound, and a blocking agent containing a malonic acid ester. The active hydrogen compound has a number-average molecular weight of 60 to 5,000 and an average of 1.6 to 2.4 functional groups.

Abstract: A coating method in which a first coating composition is applied to the surface of an object to be coated to obtain a first uncured coating film, a second coating composition is applied to the first uncured coating film to obtain a second uncured coating film, and the first uncured coating film and the second uncured coating film are then cured simultaneously by heating, wherein the first coating composition contains a hydroxyl group-containing resin component and the second coating composition contains an isocyanate component containing a triisocyanate represented by general formula (I) (in the formula, the multiple Y1 each independently are a single bond or a C1-20 divalent hydrocarbon group which optionally contains one or more selected from the group consisting of an ester group and an ether group, and R1 is a hydrogen atom or a C1-12 monovalent hydrocarbon group) and the above-mentioned hydroxyl group-containing resin component, is provided.

Abstract: A piezoelectric sound generation component is provided that includes a piezoelectric vibration plate, a case with a case body and a lid that accommodates the piezoelectric vibration plate in an inner space formed by the case body and the lid, and a pin terminal provided to the lid so that the pin terminal is abutted on the piezoelectric vibration plate. The case body has a first top wall and a first circumferential wall. The lid has a second top wall, a second circumferential wall, and a protruding portion that contacts the first circumferential wall of the case body. The protruding portion has a first surface that is abutted on a contact surface, facing the first top wall, of the first circumferential wall and a second surface that couples the first surface to the second circumferential wall and is separated from the first circumferential wall.

Abstract: The present invention provides a polyisocyanate composition comprising at least one isocyanate compound selected from the group consisting of an aliphatic isocyanate and an alicyclic isocyanate as a skeleton, wherein an average value of a total number of isocyanate groups blocked with a blocking agent and not blocked with a blocking agent per polyisocyanate molecule is 2 or more, and among the isocyanate groups in the polyisocyanate composition, 1 mol % or more and 99 mol % or less are blocked with a blocking agent, and the like.

Abstract: The present invention provides a blocked polyisocyanate composition comprising a blocked polyisocyanate formed through blocking at least a part of isocyanate groups possessed by a polyisocyanate derived from one or two or more diisocyanates selected from the group consisting of an aliphatic diisocyanate and an alicyclic diisocyanate with an active methylene-based compound comprising a malonic acid diester, wherein a specific molar ratio calculated from contents (mol %) of isocyanurate groups, iminooxadiazinedione groups, uretdione groups, and allophanate groups is 0.05 or more and 0.60 or less.

Abstract: Provided is a polyisocyanate mixture including: a triisocyanate compound (A) represented by Formula (I); and polyisocyanate (B) obtained from at least one diisocyanate selected from the group consisting of aliphatic diisocyanate, alicyclic diisocyanate, and aromatic diisocyanate. (In Formula (1), a plurality of Y1's each independently represent a single bond or a divalent hydrocarbon group having 1 to 20 carbon atoms which may have an ester structure and/or an ether structure. A plurality of Y1's may be the same as or different from one another. R1 represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 12 carbon atoms.

Abstract: A compound having an uretonimine group contains, as a structural unit, a carbodiimide compound derived from at least one of an aliphatic diisocyanate and an aromatic diisocyanate, and also contains an isocyanate compound as a structural unit, wherein the residue obtained by removing an isocyanate group from the isocyanate compound and the residue obtained by removing a carbodiimide group from the carbodiimide compound are different.

Abstract: The present invention provides a blocked polyisocyanate composition comprising a blocked polyisocyanate formed through blocking at least a part of isocyanate groups possessed by a polyisocyanate derived from one or two or more diisocyanates selected from the group consisting of an aliphatic diisocyanate and an alicyclic diisocyanate with an active methylene-based compound comprising a malonic acid diester, wherein a specific molar ratio calculated from contents (mol %) of isocyanurate groups, iminooxadiazinedione groups, uretdione groups, and allophanate groups is 0.05 or more and 0.60 or less.

Abstract: A coating method in which a first coating composition is applied to the surface of an object to be coated to obtain a first uncured coating film, a second coating composition is applied to the first uncured coating film to obtain a second uncured coating film, and the first uncured coating film and the second uncured coating film are then cured simultaneously by heating, wherein the first coating composition contains a hydroxyl group-containing resin component and the second coating composition contains an isocyanate component containing a triisocyanate represented by general formula (I) (in the formula, the multiple Y1 each independently are a single bond or a C1-20 divalent hydrocarbon group which optionally contains one or more selected from the group consisting of an ester group and an ether group, and R1 is a hydrogen atom or a C1-12 monovalent hydrocarbon group) and the above-mentioned hydroxyl group-containing resin component, is provided.

Abstract: A blocked polyisocyanate composition containing a blocked polyisocyanate obtained from a polyisocyanate and at least one blocking agent, wherein the blocking agent contains a compound represented by general formula (I) shown below, and the amount of methane tetracarbonyl structures represented by general formula (II) shown below, relative to the total molar amount within the blocked polyisocyanate of bonded structures in which the compound represented by general formula (I) is bonded to the polyisocyanate, is at least 0.5 mol % but not more than 10 mol %.

Abstract: A piezoelectric sounding component includes a diaphragm that includes a metal plate and a piezoelectric body formed on the metal plate. A casing includes a bottom wall and side walls defining an open sound chamber. The casing also includes a supporting portion on which the diaphragm is supported to cover the open end of the chamber. A terminal is formed on the casing and serves to apply voltage to the diaphragm. An elastic adhesive fixes the diaphragm to the supporting portion and a conductive adhesive is formed on the elastic adhesive and electrically connects the terminal and the diaphragm. An elastic sealing material forms a frame-like sealing portion that seals a gap between outer peripheral edges of the diaphragm and an inner surfaces of the casing. The elastic sealing material also used to cover at least part of an exposed surface of the piezoelectric body to form a protective portion that protects the surface of the piezoelectric body. The protective portion contacts the sealing portion.

Abstract: The present invention provides a blocked polyisocyanate composition comprising a blocked polyisocyanate obtained from a blocking agent and a polyisocyanate derived from at least one diisocyanate selected from the group consisting of an aliphatic diisocyanate and an alicyclic diisocyanate, wherein the blocking agent comprises at least one selected from the group consisting of a malonic acid diester compound having a specific structure and a ?-ketoester compound having a specific structure, and a molar ratio of a total of a specific keto form structure and a specific keto form structure to a total of a specific enol form structure and a specific enol form structure is 75/25 or more and 97/3 or less.

Abstract: A piezoelectric sounding component includes a diaphragm that includes a metal plate and a piezoelectric body formed on the metal plate. The diaphragm bends and vibrates according to application of voltage to the piezoelectric body. A casing that includes a bottom wall, side walls, and a supporting portion to support the diaphragm in inside edge portions of the side walls. The side walls extending from edges of the bottom wall in a thickness direction and includes a first wall, a second wall positioned to face the first wall, and a third wall positioned between the first wall. Two or more terminals that are formed on the first wall or the third wall serve to apply voltage to the diaphragm. Two or more elastic adhesives join the side walls and the diaphragm between the two or more terminals and the diaphragm. Two or more conductive adhesives are formed on the two or more elastic adhesives and join the two or more terminals and the diaphragm.