Abstract: A polymer having a structural unit represented by the following general formula (I), a flame-retardant composition comprising the polymer, and a method for producing the polymer. In the general formula (I), R1 represents any one selected from the group consisting of an alkyl group having 1 to 18 carbon atoms, an alkenyl group having 2 to 18 carbon atoms, and an aralkyl group having 7 to 18 carbon atoms; R2 represents a hydrogen atom or a methyl group; R3 and R4 each independently represent any one selected from the group consisting of an alkyl group having 1 to 6 carbon atoms, an alkyloxy group having 1 to 6 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, an alkenyloxy group having 2 to 6 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, an aralkyloxy group having 7 to 12 carbon atoms, an aryl group having 6 to 12 carbon atoms, and an aryloxy group having 6 to 12 carbon atoms, and R3 and R4 may be bonded to each other; and n is an integer of 0 to 5.

Abstract: One aspect of the present invention relates to a carbonaceous material that has a benzene adsorption amount of 30 to 60%, a vitamin B12 adsorption amount of more than 50.0 mg/g, and a micropore volume of mesopores of 0.13 to 0.30 cm3/g as calculated from a nitrogen adsorption isotherm by a BJH method.

Abstract: A composition may contain a wide variety of particles with good dispersibility, the composition being able to make both rigidity and elongation at sufficient levels compatible with each other even under a low humidity. A coating and a film may each be formed of such a composition, and a base material having the foregoing coating or film. Specifically, the composition may contain an ethylene-vinyl alcohol copolymer (A) having the content of an ethylene unit of 0.5 to 19 mol % relative to all structural units and a particle (B), wherein the content of the particle (B) is 1 part by mass or more and less than 100 parts by mass based on 100 parts by mass of the ethylene-vinyl alcohol copolymer (A).

Abstract: There is provided a polarizing plate comprising a polarizing film with a thickness of 20 ?m or less, wherein the amount of a non-oriented amorphous part in the polarizing film is 55 to 70%. Here the amount of an oriented crystalline part in the polarizing film is preferably 10 to 15%. By thermoforming the polarizing plate, there can be provided a thermoformed article having sufficient polarization performance and free from cracks even with a large deformation amount during thermoforming.

Abstract: Provided are a multilayer structure and the like being superior in adhesiveness of an interlayer under high humidity and separability of a barrier layer in water, and even in a case in which the barrier layer is exposed to water in a separating and collecting step, being superior in viscosity stability after separating and collecting a resin that constitutes the barrier layer. The multilayer structure of the present invention is a multilayer structure including a barrier layer (A), a water-soluble layer (B), and an adhesive layer (C), in which: the adhesive layer (C) is laminated via the water-soluble layer (B) on one or both faces of the barrier layer (A); the barrier layer (A) contains a polyamide or an ethylene-vinyl alcohol copolymer (a1) as a principal component; and the water-soluble layer (B) contains an alkali metal ion (b1) at a content of 100 ppm or more and 2,000 ppm or less.

Abstract: Disclosed is a grain-finished leather-like sheet including: a fiber substrate; and a resin layer stacked on one side of the fiber substrate, wherein the resin layer includes at least a skin layer, and the skin layer includes a polyurethane, a nonionic compound having an HLB value of 10 to 16, and a water-soluble polymer, and has surface free energy including a polar component of 25 to 40 mJ/m2 and a dispersive component of 30 to 40 mJ/m2, as analyzed according to the OWRK method.

Abstract: An acetalization product of ethylenevinyl alcohol copolymer contains, relative to all monomer units constituting the acetalization product, 20-80 mol % of an ethylene unit and 4-76 mol % of a vinyl alcohol unit. The acetalization product has a degree of acetalization of 3-80 mol % and an oxygen permeation rate of 150 cc·20 ?m/m2·day·atm or less at 20° C. and 65% RH. The acetalization product satisfies Formulae (1) and (2) below: 0.71 ? W 0.05 h / 2 ? f ? 1.09 ( 1 ) 1.2 ? Tm / Tg ? 1.35 ( 2 ) where in Formula (1), W0.05h/2f represents a symmetry factor determined by reversed-phase partition gradient high-performance liquid chromatography analysis using a water-ethanol eluant in accordance with JIS K 0124:2011; and in Formula (2), Tm and Tg represent a melting peak temperature (Kelvin) and a midpoint glass transition temperature (Kelvin).

Abstract: Provided is a creping adhesive that is favorable in a thread-forming property, wet adhesiveness, and the like. A creping adhesive contains a PVA (A), wherein at least one of (i) and (ii) below is satisfied. (i) The PVA (A) includes a PVA having a minimum degree of branching of 0.25 or more and 0.93 or less within a range of an absolute molecular weight being 200,000 or more and 800,000 or less, and a ratio Mw/Mn of a weight-average molecular weight Mw to a number-average molecular weight Mn of the PVA (A) is 2.5 or more. (ii) The ratio Mw/Mn of the weight-average molecular weight Mw to the number-average molecular weight Mn of the PVA (A) is 3.8 or more.

Abstract: The adsorption filter according to the present invention is formed from a molded body including activated carbon and a binder, the pore volume of pores having a diameter of 10 ?m or greater in terms of the volume of the adsorption filter as measured through mercury intrusion being 0.10 cm3/cc to 0.39 cm3/cc.

Abstract: The present disclosure provides a composition containing a vinyl alcohol polymer and an amphipathic substance.

Abstract: There is provided a multilayer structure comprising at least a barrier resin layer (X) and an inorganic barrier layer (Y) with a thickness of 500 nm or less which is adjacent to the barrier resin layer (X), wherein the layer (X) is made of a resin composition (x) comprising an ethylene-vinyl alcohol copolymer (A) and a polyamide (B) in a mass ratio (A/B) of 55/45 to 98/2, and the ethylene-vinyl alcohol copolymer (A) has an ethylene content of 20 to 46 mol % and a saponification degree of 90 mol % or more. Thus, there can be provided a multilayer structure having excellent gas barrier properties and appearance even after being subjected to stretching process or retorting process followed by bending process, and a packaging material for retort therewith.

Abstract: A block copolymer (A) including a vinyl alcohol-based polymer block (b) and an ionic polymer block (c) containing a monomer unit with an ionic group forming a salt and a vinyl alcohol-based monomer unit. The ionic group is a carboxylic acid group, a sulfonic acid group, or an ammonium group. The vinyl alcohol-based polymer block (b) has a number-average molecular weight (Mnb) from 15,000 to 220,000. The ionic polymer block (c) has a content of the vinyl alcohol-based monomer unit from 5 to 95 mol % based on the total monomer units. The block copolymer (A) has a number-average molecular weight (MnA) from 20,000 to 440,000. A ratio (Mnb/MnA) of the number-average molecular weight (Mnb) to the number-average molecular weight (MnA) is from 0.1 to 0.9.

Abstract: A resin composition comprising: a resin (A) having 30 mol % or more of a structural unit represented by a formula (1) below, and a boron compound (B), the boron compound (B) containing a boron element in an amount of 0.01 to 2,000 ?mol per gram of the resin (A).

Abstract: To provide: a structure in which a layer having heat-sealing properties has few cracks and which is superior in water vapor barrier properties, heat-sealing properties, and oxygen barrier properties; a method for producing such a structure; and greaseproof paper, gas barrier paper, flavor barrier paper, and a packaging material each including such a structure. In the structure, an A layer, a B layer, and a C layer are laminated in this order on at least one face of a paper base material, the A layer contains at least one selected from the group consisting of an olefin polymer, a styrene polymer, and a polyester polymer, the B layer contains a vinyl alcohol polymer, and the C layer contains a polymer having a glass transition temperature of ?100° C. or more and 5° C. or less.

Abstract: Provided are an ethylene-vinyl alcohol copolymer, a resin composition and a molded product thereof being superior in long-run stability of melt molding, with inhibited coloring and generation of film forming defects such as flaws in formed film and streaks, and also being superior in appearance characteristics. An ethylene-vinyl alcohol copolymer (A) obtained by saponifying a copolymer of ethylene and a vinyl ester, in which molecular weights determined by using gel permeation chromatography with a differential refractive index detector and an ultraviolet and visible absorbance detector after a heat treatment in a nitrogen atmosphere at 220° C. for 50 hrs satisfy the inequality (1): (Ma?Mb)/Ma<0.

Abstract: There is provided a molded article for water related application which can prevent molecular cleavage of polyamide caused by a radical generated from a chlorine-based oxidizing substance contained for sterilization in tap water, thereby preventing a degradation in the performance of the molded article. The molded article for water related application comprises a resin composition comprising; 100 parts by mass of a semi-aromatic polyamide (A); 10 to 200 parts by mass of an inorganic filler (B); and 0.1 to 2.0 parts by mass of a phenolic antioxidant (C), wherein the semi-aromatic polyamide (A) includes dicarboxylic acid units composed mainly of aromatic dicarboxylic acid units, and diamine units composed mainly of aliphatic diamine units, and wherein the phenolic antioxidant (C) has, in the molecule, a structure represented by the following formula (1); where ** represents a linking moiety.

Abstract: Provided is a composition containing an unsaturated compound and an organic halide, wherein a content of the organic halide in terms of halogen element, based on a content of the unsaturated compound, is 1 ppm by mass or more and 10,000 ppm by mass or less.

Abstract: There is provided a multilayer structure having a hard layer (A) and either a resin composition layer (B1) or a resin composition layer (B2), wherein the hard layer (A) has a puncture strength of 40 N/mm or more and 150 N/mm or less; the resin composition layer (B1) is made of a resin comprising an ethylene-vinyl alcohol copolymer (b1) having a melting point Tm1 of 170° C. or more and an ethylene-vinyl alcohol copolymer (b2) having a melting point Tm2 of less than 170° C.; and the resin composition layer (B2) is made of a resin comprising a modified ethylene-vinyl alcohol copolymer containing a modifying group having a primary hydroxy group represented by formula (I). The multilayer structure is excellent in mechanical strength and thermal formability, and when being recovered, allows for melt kneading with less hard spots due to resin deterioration (gelation), showing excellent recyclability.

Abstract: Provided are: a resin composition which inhibits the generation of aggregates at the time of melt molding and enables obtaining a molded product which has sufficient heat/light resistance and is unlikely to break down into microplastics after being discarded, the above-mentioned characteristics being sufficiently improved compared to a resin composition obtained using the same ethylene-vinyl alcohol copolymer (EVOH), and the like. The resin composition contains: an ethylene-vinyl alcohol copolymer (A); and an aluminum ion (B), wherein at least a part of the ethylene-vinyl alcohol copolymer (A) comprises, at a polymer end, at least one of a carboxylic acid unit (I) and a lactone ring unit (II), a total content (i+ii) of the carboxylic acid unit (I) and the lactone ring unit (II) per gram of the ethylene-vinyl alcohol copolymer (A) is 14 ?mol/g or more and 78 ?mol/g or less, and a content (b) of the aluminum ion (B) per gram of the ethylene-vinyl alcohol copolymer (A) is 0.002 ?mol/g or more and 0.

Abstract: The present disclosure provides a laminated sheet that has favorable ink adhesion and laser cutting processability, and is highly sustainable. The laminated sheet (1) of the present disclosure has a base layer (11) and a surface layer (21) laminated on at least one side of the base layer (11), the base layer (11) includes a methacrylic-based resin (M) including 80 to 100% by mass of methyl methacrylate units, the surface layer (21) includes a styrene-based copolymer(S), the proportion of the total thickness of the surface layer (21) to the total thickness of the laminated sheet (1) is 1 to 20%, and the haze value of a 3.0 mm-thick single-layer molded sheet of the pulverized material of the laminated sheet (1) is 4% or less.