Abstract: This poly(amic acid) composition contains a poly(amic acid). Aromatic monomers account for 95 mol % or more of all monomers that constitute the poly(amic acid). The aromatic monomers include 40-95 mol % of a monomer (A) having a prescribed diphenyl ether skeleton, 0-60 mol % of a monomer (B) having a benzophenone skeleton and 0-60 mol % of a monomer (C) having a biphenyl skeleton, each relative to the total amount of monomers. The monomer (A) having a diphenyl ether skeleton includes 20 mol % or more of a monomer (A-1) having at least three aromatic rings relative to the total amount of monomers. The diamine/tetracarboxylic acid dianhydride molar ratio is 0.90-0.999.

Abstract: Provided is a lithium (N-carbonyl)sulfonamide compound represented by the following Formula (I). In Formula (I), R1 and R2 each represent an alkyl group having from 1 to 10 carbon atoms, an alkenyl group having from 2 to 10 carbon atoms, an alkynyl group having from 2 to 10 carbon atoms, or an aryl group, and L1 and L2 each represent a single bond or —O—, with a proviso that a case in which L1 and L2 are both single bonds are excluded.

Abstract: An ethylene-based polymer (X) formed by graft modification of an ethylene/?-olefin copolymer (A) satisfying requirements with a polar compound: (A-i) a content of a structural unit (a) derived from ethylene is 51 to 99 mol %, and a content of a structural unit (b) derived from an ?-olefin having 5 to 20 carbon atoms is within a range of 1 to 49 mol % [provided that (a) and (b) equal 100 mol %]; (A-ii) a density is within a range of 0.850 to 0.875 g/cm3; (A-iii) a melt flow rate (MFR) at 190° C. and at a load of 2.16 kg is within a range of 0.1 to 25 g/10 min; and (A-iv) a sum of the numbers of a vinyl-type double bond, a vinylidene-type double bond, a disubstituted olefin-type double bond and a trisubstituted olefin-type double bond per 1000 carbon atoms obtained by 1H-NMR is 0.16 to 1.00.

Abstract: The polyamic acid composition according to the present disclosure comprises a polyamic acid. The monomers constituting the polyamic acid include, relative to the total monomers, 30-95 mol % of monomer (A) that has a diphenyl ether skeleton represented by general formula (1) or (2) but no benzophenone skeleton, and 0-5 mol % of monomer (B) that has a benzophenone skeleton. The diamines constituting the polyamic acid include aromatic diamine (?1) that has a diphenyl ether skeleton represented by general formula (2) and aliphatic diamine (?2) represented by general formula (3) or (4), and the molar ratio b/a of the diamines b to tetracarboxylic dianhydride a constituting the polyamic acid is 0.90-0.999.

Abstract: A light, flexible, and tough thin film having high total light transmittance that can be formed on various three dimensional shapes, and also provides a stably driven tactile sensor, which is an electronic device having the switching function thereof, is provided. The tactile sensor is formed on a polyimide thin film having high total light transmittance, thermal resistance, and a polar component of surface free energy with a specific value, and has a switching device that emits a voltage signal which, through an electronic circuit for controlling noise, stably drives another device. This tactile sensor has a curved or flat surface and has a first electrode, a ferroelectric layer, and a second electrode formed over the polyimide thin film. The switching device as a tactile sensor can drive another device merely by a light touch with a finger, and can be manufactured at a high non-defective rate.

Abstract: There is provided a method for manufacturing a printed wiring board that effectively suppresses pattern failure and is also excellent in fine circuit forming properties. This method includes: providing an insulating substrate including a roughened surface; performing electroless plating on the roughened surface of the insulating substrate to form an electroless plating layer less than 1.0 ?m thick having a surface having an arithmetic mean waviness Wa of 0.10 ?m or more and 0.25 ?m or less as measured in accordance with JIS B0601-2001 and a kurtosis Sku of 2.0 or more and 3.5 or less as measured in accordance with ISO 25178; laminating a photoresist on the surface of the electroless plating layer; performing exposure and development to form a resist pattern; applying electroplating to the electroless plating layer; stripping the resist pattern; and etching away an unnecessary portion of the electroless plating layer to form a wiring pattern.

Abstract: Provided is a roughened copper foil capable of achieving both excellent transmission characteristics and suppression of powdering. This roughened copper foil includes a roughened surface on at least one side. The roughened surface has a roughness slope tan ? of 0.58 or less as calculated based on a mean height Rc (?m) and a mean width RSm (?m) of profile elements by formula Rc/(0.5×RSm), and a sharpness index Rc×Sku of 2.35 or less that is a product of the mean height Rc (?m) and a kurtosis Sku. Rc and RSm are values measured in accordance with JIS B0601-2013 under a condition of not performing a cutoff by a cutoff value ?s and a cutoff value ?c, and Sku is a value measured in accordance with ISO 25178 under a condition of not performing a cutoff using an S filter and an L filter.

Abstract: Provided is a composition which contains a urethane (meth)acrylate, and at least one selected from the group consisting of 2-hydroxyethyl acrylate and hydroxypropyl acrylate, in which at least one of the following (1) or (2) is satisfied: (1) a content of 2-hydroxyethyl acrylate is 10,000 ppm by mass or less with respect to a total mass of the composition; (2) a content of hydroxypropyl acrylate is 25,000 ppm by mass or less with respect to the total mass of the composition.

Abstract: An optical element, in which Stim (ipRGC) represented by Formula 1 is from 10.0 to 68.0. In Formula 1, RID65 (?) is a spectral irradiance of illuminant D65, ? (?) is a spectral transmittance of the optical element, and Smel (?) is a sensitivity function of ipRGCs obtained by converting a sensitivity function of ipRGCs described in CIE S/026E: 2018 such that a maximum sensitivity thereof is identical to a maximum sensitivity of a z bar (?) in CIE 1931 color-matching functions.

Abstract: Provided is a nonaqueous secondary battery including: a nonaqueous electrolyte solution that contains a compound (A) represented by the following Formula (I); a positive electrode that contains a positive electrode active material containing a compound (B) represented by the following Formula (II); and a negative electrode. The content of the compound (A) is more than 0% by mass but less than 1.0% by mass with respect to a total amount of the nonaqueous electrolyte solution. In Formula (I), X+ represents a hydrogen ion, a lithium ion, a sodium ion, or a potassium ion. In Formula (II), 0.1?a<1.3, 0.1<(1-b-c)<1.0, 0<b<0.6, and 0<c<0.6.

Abstract: A device for manufacturing a fiber-reinforced resin having an array of reinforcing fibers oriented in one direction, the device making it possible, with a comparatively simple configuration, to connect earlier and later reinforcing fibers to each other when switching the reinforcing fibers, is provided. The device having an array of reinforcing fibers oriented in one direction according to the present invention comprises: an impregnation unit that impregnates reinforcing fibers with a resin; and a switching device that, when the reinforcing fibers to be impregnated are changed to new fibers, connects the newly fed reinforcing fibers to the previously fed reinforcing fibers. When switching the reinforcing fibers, the device connects the new reinforcing fiber to the preceding reinforcing fiber by forming a bonded body in which the preceding reinforcing fibers and the new reinforcing fibers are bonded by fusing a melted second resin in a form of a thin film.

Abstract: A thermoplastic elastomer composition including 100 parts by mass of a block copolymer containing a polymer block (X) having an aromatic vinyl compound as a main component and a polymer block (Y) having a conjugated diene compound as a main component, or a hydrogenated product thereof (A); 1 to 400 parts by mass of an ethylene/?-olefin copolymer (B) satisfying the following requirements (b-1) to (b-3); and 0 to 200 parts by mass of a polyolefin-based resin (C) satisfying the following requirement (c-1), (b-1) a kinematic viscosity at 100° C. is 5 to 5,000 mm2/s and a kinematic viscosity at 40° C. is 50 to 100,000 mm2/s, (b-2) a weight-average molecular weight (Mw) determined by gel permeation chromatography (GPC) is 1,000 to 30,000, (b-3) a content ratio of ethylene structural units is 15 to 85 mol %, and (c-1) MFR (230° C. and 2.16 kg) is 0.1 to 500 g/10 min.

Abstract: A resin composition, wherein the content of a propylene-based polymer (A) satisfying a predetermined requirement is 10 to 99.9 parts by mass, the content of a propylene-based polymer (B) satisfying a predetermined requirement is 0 to 40 parts by mass, the content of a polyolefin (C) containing structural units derived from an unsaturated carboxylic acid and/or a derivative thereof is 0.1 to 20 parts by mass, and the content of an ethylene-based polymer (D) satisfying a predetermined requirement is 0 to 40 parts by mass, provided that the total content of components (A), (B), (C) and (D) is 100 parts by mass.

Abstract: A piezoelectric base material includes an elongated inner conductor, and a piezoelectric layer covering a periphery of the inner conductor. The piezoelectric layer includes a piezoelectric yarn wound around the inner conductor, and an adhering section that maintains a state in which the piezoelectric yarn is wound around the periphery of the inner conductor. The piezoelectric yarn includes an optically active polypeptide fiber that is a fiber including an optically active polypeptide. The piezoelectric layer has an elastic modulus Y of from 1.0 GPa to 8.0 GPa as measured by a microhardness measurement in accordance with JIS Z 2255.

Abstract: Provided is a roughened copper foil capable of achieving both excellent transmission characteristics and high peel strength when used for a copper-clad laminate or a printed wiring board. This roughened copper foil includes a roughened surface on at least one side. The roughened surface has a roughness slope tan ? of 0.58 or less as calculated based on a mean height Rc (?m) and a mean width RSm (?m) of profile elements by formula Rc/(0.5×RSm), and a small projected area Rc×RSm of 0.45 ?m2 or more and 2.00 ?m2 or less that is a product of the mean height Rc (?m) and the mean width RSm (?m) of the profile elements. Rc and RSm are values measured in accordance with JIS B0601-2013 under a condition of not performing a cutoff by a cutoff value ?s and a cutoff value ?c.

Abstract: The present invention provides an optical member including an organic polymer. This optical member includes a surface A which has an area of 1 mm2 or more, and in which the flatness of a region having an area of 1 mm2, as measured by a non-contact type optical flatness meter, is 80 ?m or less.

Abstract: Provided are a sulfide solid electrolyte having a small particle size and a low specific surface area; an electrode composite material, a slurry and a battery in each of which the sulfide solid electrolyte is used; and a method of producing the sulfide solid electrolyte. The sulfide solid electrolyte contains lithium (Li), phosphorus (P) and sulfur (S) elements and has: a median diameter D50 of 0.10 ?m or more and 2.0 ?m or less; and a value of the formula: (A×B)/C, wherein A represents a BET specific surface area (m2/g), B represents a true density (g/cm3), and C represents a CS value (m2/cm3), of 1.0 or more and 2.5 or less.

Abstract: Provided is a method for producing a cyclic olefin compound, including a step of producing a cyclic olefin compound by acting a divalent nickel complex represented by General Formula (1) to decarbonylate and decarboxylate an alicyclic dicarboxylic acid anhydride, in which the divalent nickel complex includes at least one specific anionic ligand Y: Ni(Y)m(L)n??(1) wherein Ni is divalent nickel, Y is an anionic monodentate or polydentate ligand and has at least one Ni-E covalent bond, E is a heteroatom or a n-bonding group, m is 1 or 2, L is a neutral ligand, and n is a real number of 0 to 6.

Abstract: An object of the present invention is to obtain a recycled carbon fiber-reinforced polyolefin composition containing recycled carbon fibers having a mechanical strength that is superior to that of a composition containing unused carbon fibers, and a molded product thereof, and the present invention relates to a recycled carbon fiber-reinforced polyolefin composition, containing 0.01 to 50 parts by mass of a modified polyolefin (A), 50 to 99 parts by mass of a polyolefin (B), and 1 to 80 parts by mass of a recycled carbon fiber (C), wherein a total of (A), (B) and (C) is 100 parts by mass, wherein the modified polyolefin (A) is a modified polyolefin obtained by reacting a modified polyolefin (D) having a group that reacts with a carbodiimide group and a carbodiimide group-containing compound (E).

Abstract: Provided is a spun-bonded nonwoven fabric including fibers formed of a resin composition that contains: a propylene polymer (A); and a polymer (B) which is at least one selected from the group consisting of polyolefins, other than the propylene polymer (A), and polyesters. The fibers have a sea-island structure. The fibers include fibers in which a ratio of island phases having a diameter of less than 0.32 ?m among those island phases at a cross-section perpendicular to the axial direction of the fibers is 60% or higher on a number basis. In the spun-bonded nonwoven fabric, a ratio (SMB/SCB) of the tensile strength (SMD) in a machine flow direction (MD) with respect to the tensile strength (SCD)) in a direction (CD) perpendicular to the machine flow direction (MD) is from 2.0 to 5.1.