Abstract: An antenna system includes: a laminate including a plurality of high-frequency permeable layers; and an antenna circuit board including a high-frequency insulating layer. n-th layer of the plurality of high-frequency permeable layers has a thickness Ln within a range of Lnmin ±?(10??n). The n-th layer is at least one high-frequency permeable layer of the laminate. ?n denotes a relative dielectric constant of the n-th layer; ? denotes a wavelength of the high-frequency wave that is incident on the laminate; and Lnmin denotes a thickness of the n-th layer where an intensity of a reflected wave from the laminate is minimized, the intensity being determined as an intensity of a composite wave of reflected waves from a front surface, a back surface, and joint interfaces of the laminate.

Abstract: Provided is a composite material that is useful as a reinforcement, and the like. The composite material at least includes a woven fabric which contains weaving yarns being fibers each having a tensile elastic modulus of 20 GPa or higher, and a thermoplastic elastomer resin. The thermoplastic elastomer resin penetrates through openings of the woven fabric from one surface of the woven fabric, and is exposed at another surface.

Abstract: The present invention relates to a method for producing a resin sheet containing at least the following step P, Step P: a step of applying pressure (p) to a sheet-shaped resin modeled article formed by a 3D printer while heating, and deforming the sheet-shaped resin modeled article to obtain a compressed sheet; and relates to a polishing pad containing a polishing layer obtained by using the method for producing.

Abstract: Disclosed are a polyurethane for use in a polishing layer, and a polishing layer and a polishing pad using the same, the polyurethane including a terminal group represented by the following formula (I): R—(OX)n— (I) wherein R represents a monovalent hydrocarbon group having 1 to 30 carbon atoms that may be substituted with a heteroatom or may be interrupted by a heteroatom, X represents an alkylene group having 2 to 4 carbon atoms, 90 to 100% of the alkylene group being an ethylene group, and n represents a number from 8 to 120.

Abstract: A polishing pad is provided with a spiral groove or concentric grooves disposed spanning from a central region to a peripheral edge region of a polishing surface of the polishing pad, and radial grooves including line segment-shaped grooves extending from the central region toward the peripheral edge region. The line segment-shaped grooves have a first end portion and a second end portion, positioned at a distance of 5 to 10% and at a distance of 35 to 70% of the radius of the polishing surface from a center of the radial grooves, respectively, and the line segment-shaped grooves have an average length of 30 to 65% of the radius of the polishing surface. A cross-sectional area Sa (mm2) of the line segment-shaped grooves and a cross-sectional area Sb (mm2) of the spiral groove or the concentric grooves satisfy 0.1?Sb/Sa<1.0.

Abstract: A coating agent for paper comprises: an ethylene-vinyl alcohol copolymer, wherein the ethylene-vinyl alcohol copolymer has a content of ethylene units of 1 mol % or more and less than 20 mol % and a block character of the ethylene units from 0.90 to 0.99. Coated paper is obtained by coating paper with such a coating agent. The coating agent of the present invention is excellent in viscosity stability and also causes the resulting coated paper to be excellent in barrier properties and water resistance.

Abstract: A liquid crystal polyester multifilament has an initial modulus variation of 3.0% or less and a tensile strength of 18 cN/dtex or more.

Abstract: A polyvinyl alcohol-based crosslinked copolymer may include an unsaturated monocarboxylic acid-based structural unit, wherein an amount of carboxylate-forming structural units in the crosslinked copolymer is 1% by mole or more and 35% by mole or less with respect to all structural units constituting the crosslinked copolymer, and a solubility of the crosslinked copolymer in water is 90% or less.

Abstract: Provided is a photosensitive resin composition comprising a thermoplastic elastomer (A), a liquid farnesene rubber (B), an ethylenically unsaturated compound (C), and a photoinitiator (D).

Abstract: A thermoplastic liquid crystal polymer (TLCP) molded body including a thermoplastic polymer capable of forming an optically anisotropic melt phase. The TLCP molded body includes an adherend portion in at least a part of the TLCP molded body. The adherend portion has a surface satisfying: a ratio <C—O>/<COO> of 1.5 or greater in which the <C—O> represents a proportion of a peak area of [C—O bond] to a C(1s) peak area, and the <COO> represents a proportion of a peak area of [COO bond] based on the C(1s) peak area; and a ratio <C?O>/<COO> of 0.10 or higher in which the <C?O> represents a proportion of a peak area of [C?O bond] based on the C(1s) peak area, and the <COO> represents the proportion of the peak area of the [COO bond] based on the C(1s) peak area in a result of X-ray photoelectron spectroscopy analysis.

Abstract: Provided are a water-soluble film preferably used for production of a package that has excellent surface gloss and has excellent anti-blocking properties, and a package using the same. A water-soluble film includes a polyvinyl alcohol resin, wherein the water-soluble film has a glossy surface with an average height SRc(G) of 1.8 ?m or less and a maximum height SRz(G) of 20 ?m or more and 50 ?m or less.

Abstract: A composite includes a polyamide (A) and continuous fibers (B), wherein the polyamide (A) comprises a diamine unit (X) and a dicarboxylic acid unit (Y), the diamine unit (X) comprises 0.1 mol % or more and less than 36 mol % of a diamine unit (X1), and the aliphatic diamine has 6 to 10 carbon atoms, the aliphatic diamine having an alkyl group having two or three carbon atoms bonded to a carbon atom at 2-position when a carbon atom to which any one of two amino groups is bonded is taken as 1-position.

Abstract: Provided is a polyamide composition, which has high moldability and excellent heat resistance and chemical resistance. The polyamide composition contains a polyamide (A) and an organic heat stabilizer (B), and in which the polyamide (A) contains a diamine unit (X) and a dicarboxylic acid unit (Y), the diamine unit (X) contains 0.1 mol % or more and less than 36 mol % of a diamine unit (X1), and the diamine unit (X1) is a constituent unit derived from an aliphatic diamine, in which the aliphatic diamine has 6 to 10 carbon atoms, the aliphatic diamine having an alkyl group having 2 or 3 carbon atoms bonded to a carbon atom at 2-position when a carbon atom to which any one of two amino groups is bonded is taken as 1-position.

Abstract: A vinyl alcohol copolymer may include a vinyl alcohol constituent unit and an olefin constituent unit vinyl alcohol having 3 to 30 carbon atoms. Such a copolymer may satisfy at least one of: a difference between a melting point and a lowest heat-sealing temperature is 45° C. or more; and the lowest heat-sealing temperature is 80° C. or less. Such a copolymer may satisfy predetermined relational formulas based on intensities and the number average molecular weight obtained from a UV absorption detector and a refractive index detector in gel permeation chromatography measurement performed on the copolymer.

Abstract: Provided is a polyamide composition, which has high moldability and excellent heat resistance and chemical resistance. The polyamide composition contains a polyamide (A), a copper compound (B1) and a metal halide (B2), and in which the polyamide (A) comprises a diamine unit (X) and a dicarboxylic acid unit (Y), the diamine unit (X) contains 0.1 mol % or more and less than 36 mol % of a diamine unit (X1), and the diamine unit (X1) is a diamine unit derived from an aliphatic diamine, in which the aliphatic diamine has 6 to 10 carbon atoms, the aliphatic diamine having an alkyl group having 2 or 3 carbon atoms bonded to a carbon atom at 2-position when a carbon atom to which any one of two amino groups is bonded is taken as 1-position.

Abstract: Provided is a modified product of a hydrogenated product of a block copolymer that can be added to obtain a resin composition having an excellent balance of mechanical properties such as tensile strength, tensile strain at break, and impact resistance. A modified hydrogenated product of a block copolymer including a polymer block containing a structural unit derived from an aromatic vinyl compound and a polymer block containing a structural unit derived from a conjugated diene compound, in which the conjugated diene compound contains isoprene and a conjugated diene compound other than isoprene; the polymer block has a vinyl bonding amount of 30 mol % or less; the modified hydrogenated product has one, or two or more functional groups selected from an alkoxysilyl group, a carboxy group, an amino group, a hydroxy group, an epoxy group, and an acid anhydride-derived group, and has a peak top intensity of loss tangent of 0.95 or less and a melt flow rate (MFR) of 0.5 g/10 min or more.

Abstract: The present disclosure provides a resin composition containing a hydrophilic resin (A), water (B), a basic compound (C), and a polyolefin resin (D).

Abstract: A method of producing modified vinyl alcohol-based polymer particles, includes mixing vinyl alcohol-based polymer particles with a mixed medium containing unsaturated carboxylic acid, an acid catalyst, and water, wherein, by mixing the vinyl alcohol-based polymer particles with the mixed medium, the vinyl alcohol-based polymer particles are reacted with the unsaturated carboxylic acid to obtain modified vinyl alcohol-based polymer particles containing a vinyl ester unit represented by a formula (2) below, having a vinyl alcohol unit content based on the total constitutional units from 95 to 99.99 mol %, and having an average particle diameter from 50 to 2000 ?m. The production method does not cause the problem of the residual sulfur content derived from a liquid medium used for reaction and is also capable of modifying the vinyl alcohol-based polymer particles while maintaining the particle shape.