Abstract: Provided is a method for producing a semiconductor substrate for high-performance memory elements with high production efficiency. The method for producing a semiconductor substrate for memory elements, comprising a step (1) of bringing a semiconductor substrate including a titanium-containing film that includes at least one of titanium and a titanium alloy, a metallic tungsten film, and a tungsten oxide film into contact with a pretreatment agent to remove at least a part of the tungsten oxide film; and a step (2) of bringing the semiconductor substrate after being subjected to the step (1) into contact with an etching agent to remove at least a part of the titanium-containing film, wherein the pretreatment agent includes at least one tungsten oxide etchant that is selected from the group consisting of acids, ammonia, and ammonium salts.

Abstract: A polycarbonate resin composition contains (A) a polycarbonate resin containing a structural unit that is represented by general formula (1) and (B) a silane coupling agent that is represented by general formula (2), wherein 0.06 part by mass or more of the silane coupling agent (B) is contained relative to 100 parts by mass of the polycarbonate resin (A).

Abstract: To provide a method for producing a (meth)acrylic acid ester compound, wherein the method enables the esterification at a high introduction rate and collecting the obtained ester compound efficiently. A method for producing a (meth)acrylic acid ester compound, includes reacting a polymer having a structure represented by formula (1) with (meth)acrylic acid anhydride in the presence of at least one of potassium carbonate, rubidium carbonate, and cesium carbonate. In formula (1), R1, R2, R3, R4, and R5 are each independently selected from a hydrogen atom and an alkyl group, and at least one of R1, R2, R3, R4, and R5 is selected from a single bond, —O—*, —S—*, —S(?O)—*, —S(?O)2—*, and an alkylene group-*; and X is a hydrogen atom, at least some of which react with (meth)acrylic acid anhydride to be (meth)acrylic groups.

Abstract: According to the present application, there can be provided a thermoplastic resin including a constituent unit (A) derived from a monomer represented by the following general formula (1): wherein R1s, which are the same or different, each represent a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, a phenyl group, or a linear or branched alkyl group containing 1 to 4 carbon atoms; and ring A represents a benzene ring optionally substituted with 1 to 4 groups selected from the group consisting of a fluorine atom, a chlorine atom, a bromine atom, a phenyl group, a linear or branched alkoxy group containing 1 to 6 carbon atoms, and a linear or branched alkyl group containing 1 to 6 carbon atoms.

Abstract: Provided are a platinum-group metal recovery agent represented by the following general Formula (1) and a platinum-group metal recovery method, which is a method of recovering platinum or rhodium from a hydrochloric acid solution containing platinum or rhodium using the platinum-group metal recovery agent, in which the platinum-group metal recovery agent and the hydrochloric acid solution are mixed to precipitate platinum or rhodium.

Abstract: An object of the present invention is to provide a method for producing m-dialkylbenzaldehyde by using a reaction starting material containing 1,4-dialkylbenzene. The method for producing m-dialkylbenzaldehyde represented by formula (3), comprising a step of allowing carbon monoxide to react on a reaction starting material containing 1,4-dialkylbenzene represented by formula (1) in the presence of a Bronsted acid and a Lewis acid, wherein the reaction starting material is 1,4-dialkylbenzene represented by formula (1), or a mixture of 1,4-dialkylbenzene represented by formula (1) and 1,3-dialkylbenzene represented by formula (2), containing 10 mol % or more of the 1,4-dialkylbenzene represented by formula (1), wherein in formulae (1) to (3), R1 represents a methyl group or an ethyl group, and R2 represents a chain or cyclic alkyl group having 3 or more and 6 or less carbon atoms that has a tertiary carbon at the benzyl position.

Abstract: A method for manufacturing a package substrate including an insulating layer and a wiring conductor, including: forming, on one or both sides of a core resin layer, a substrate including a peelable first metal layer that has a thickness of 1-70 ?m, a first insulating resin layer, and a second metal layer; forming a non-through hole reaching a surface of the first metal layer, performing electrolytic and/or electroless copper plating on its inner wall, and connecting the second and first metal layers; arranging a second insulating resin layer and a third metal layer and heating and pressurizing the first substrate to form a substrate; forming a non-through hole reaching a surface of the second metal layer, performing electrolytic and/or electroless copper plating on its inner wall, and connecting the second and third metal layers; peeling a third substrate; and patterning the first and third metal layers to form the wiring conductor.

Abstract: To provide an optical laminate that exhibits an achromatic silver color even when observed from any angle in the case of using an optical laminate including a cholesteric liquid crystal layer exhibiting a silver color, and a polarizing lens and eyewear using the same. An optical laminate for eyewear includes a light reflecting layer comprising at least one cholesteric liquid crystal layer; and a support sandwiching the light reflecting layer, in which a reflection hue of the light reflecting layer exhibits a silver color, the light reflecting layer has a reflection characteristic over a wavelength range of at least 380 nm to 900 nm, and an absolute value of a difference (?R1?R2) between an average reflectance (R1) at 500 nm to 700 nm and an average reflectance (R2) at 701 nm to 900 nm of the light reflecting layer is 10 points or less in the wavelength range.

Abstract: Provided are a novel aldehyde compound suitable for a fragrance and a fragrance ingredient, or a raw material thereof, and a method for producing the aldehyde compound, as well as a fragrance composition containing the aldehyde compound as an active ingredient, and use of the aldehyde compound as a fragrance. A compound represented by Formula (1): where in Formula (1), R is a hydrogen atom or a methyl group.

Abstract: Provided is a stretched body having a high barrier property under high humidity, a PET bottle, and a method for producing a container. The stretched body of a composition containing a semi-aromatic polyamide resin and plate-shaped talc having an aspect ratio of more than 18, a content of the plate-shaped talc having an aspect ratio of more than 18 in the composition is from 3.0 to 55.0 mass % when a total content of the semi-aromatic polyamide resin and the plate-shaped talc having an aspect ratio of more than 18 is 100 mass %.

Abstract: Provided are an epoxy resin curing agent containing an amine composition or a modified product thereof, wherein the amine composition contains bis(aminomethyl)cyclohexane (A) and a compound (B) represented by the following formula (1), and wherein the content of the component (B) based on 100 parts by mass of the component (A) is from 0.01 to 2.0 parts by mass, an epoxy resin composition, and use of an amine composition for an epoxy resin curing agent, wherein R1 represents an alkyl group having 1 to 6 carbon atoms, and p is a number of 1 to 3.

Abstract: The purpose of this invention is to provide: a hard-coat composition with which it is possible to produce a hard-coat layer having excellent hardness and abrasion-resistance when cured, and having excellent moldability during processing; and a laminate film and the like having such a hard-coat composition. This problem is solved by a curable hard-coat composition containing a (meth)acryloyl polymer and inorganic oxide nanoparticles, wherein the (meth)acryloyl polymer has a (meth)acrylic equivalent of 200-500 g/eq and a weight-average molecular weight of 5,000-200,000.

Abstract: Provided is an oxygen scavenger powder containing an iron powder, a metal halide, and an alkaline agent, in which the alkaline agent has a solubility of less than 0.1 g in 100 g of water at 25° C., and an aqueous dispersion of the alkaline agent has a pH of from 8 to 12 at 25° C.

Abstract: Provided are a glycidyl (meth)acrylate composition, which includes a phenolic polymerization inhibitor that is unlikely to deteriorate such that the glycidyl (meth)acrylate composition can be stably stored for a long period of time, and a method for suppressing deactivation of a phenolic polymerization inhibitor in a glycidyl (meth)acrylate resin composition. More specifically, provided are: a glycidyl (meth)acrylate composition including a glycidyl (meth)acrylate, a quaternary ammonium salt, and a phenolic polymerization inhibitor, wherein a content of the quaternary ammonium salt is 1.00 ppm or less; and a method for suppressing deactivation of a phenolic polymerization inhibitor in a glycidyl (meth)acrylate composition, including adjusting a content of a quaternary ammonium salt in the glycidyl (meth)acrylate composition to 1.00 ppm or less.

Abstract: A production method for producing a target compound represented by the following formula (1), the production method including: a step (A) of subjecting a mixed liquid containing a starting compound represented by the following formula (2) and a solvent to a hydrogenation reduction in the presence of a catalyst having hydrogenation ability, wherein, in the step (A), water is removed from the reaction system: wherein R represents H, CH3, or C2H5, wherein R represents H, CH3, or C2H5, and R1 represents CH3, C2H5, C3H7, or C4H9.

Abstract: Provided is an oxygen absorber containing: a liquid oligomer of an unsaturated hydrocarbon; a transition metal catalyst; a carrier supporting the liquid oligomer of the unsaturated hydrocarbon and the transition metal catalyst; granular activated carbon; and crystalline thermoplastic resin particles. In an analysis curve derived by subjecting the crystalline thermoplastic resin particles and the granular activated carbon to a pyrolysis-gas chromatography analysis under a pyrolysis condition of 600° C., a ratio [Cref/Pref] of a peak area (Cref) of a decomposition product of a low molecular weight component of the crystalline thermoplastic resin particles adsorbed on the granular activated carbon per unit mass of the activated carbon to a peak area (Pref) of the crystalline thermoplastic resin particle decomposition product per unit mass of the crystalline thermoplastic resin particles is 0.20 or less.

Abstract: Provided is an oxygen absorber including an unsaturated group-containing liquid oligomer, an oxygen absorption-promoting substance, a carrier supporting the unsaturated group-containing liquid oligomer and the oxygen absorption-promoting substance, gas-absorbing inorganic particles, and activated carbon. An amount of the unsaturated group-containing liquid oligomer adsorbed on the gas-absorbing inorganic particles is 6.5 parts by mass or less per 100 parts by mass of the gas-absorbing inorganic particles.

Abstract: To achieve a method for producing a carbonic ester at a high yield by a simple process while suppressing formation of by-products, for example, a method for producing an aliphatic carbonic ester. The above problem is solved by a method for producing a carbonic ester, the method including a carbonic ester formation reaction in which an alcohol and carbon dioxide are reacted in the presence of an aromatic nitrile compound and a catalyst, wherein the water content in the alcohol used in the carbonic ester formation reaction is 0.10% by mass or less.

Abstract: A cleaning composition for semiconductor substrates, containing an alkaline compound (A), a corrosion inhibitor (B), and water, wherein the alkaline compound (A) is at least one selected from the group consisting of a quaternary ammonium hydroxide (A1) and potassium hydroxide (A2), and the corrosion inhibitor (B) is at least one selected from the group consisting of 4-substituted pyrazoles, potassium tris(1-pyrazolyl)borohydride, 2-(4-thiazolyl)benzimidazole, and halogenated-8-hydroxyquinolines.

Abstract: Provided are a glycidyl (meth)acrylate composition, which includes a phenolic polymerization inhibitor that is unlikely to deteriorate such that the glycidyl (meth)acrylate composition can be stably stored for a long period of time, and a method for suppressing deactivation of a phenolic polymerization inhibitor in a glycidyl (meth)acrylate resin composition. More specifically, provided are: a glycidyl (meth)acrylate composition including a glycidyl (meth)acrylate, a quaternary ammonium salt, a strong acid salt, and a phenolic polymerization inhibitor; and a method for suppressing deactivation of a phenolic polymerization inhibitor in a glycidyl (meth)acrylate composition, the method including adjusting the content of a strong acid salt in the glycidyl (meth)acrylate composition to a certain amount relative to an amount of a quaternary ammonium salt by mole.