Abstract: Provided is an additive for nonaqueous electrolyte secondary battery positive electrodes, which can improve the electrical conductivity of electrodes, decrease the resistance of electrodes, and increase the use efficiency of cation species such as lithium ions, sodium ions, various quaternary ammonium salts, and phosphonium salts. The additive includes a carbonaceous material having a specific surface area as determined by the BET method of from 1,000 m2/g to 2,000 m2/g, a micropore volume as determined by the DFT method of less than 0.60 cm3/g, and an oxygen content as measured by elemental analysis of 0.5% by mass or more and less than 1.3% by mass.
Abstract: A plastic wavelength shifting fiber includes a core containing a fluorescent agent having a peak of a fluorescence spectrum in a wavelength range of 430 to 550 nm, and a cladding covering an outer peripheral surface of the core and having a refractive index lower than that of the core. The number of carbonyl bonds in the fluorescent agent is one or smaller.
Abstract: Provided are a multilayer body in which base materials composed of a metal, a resin or the like are firmly bonded to each other even when not subjected to primer treatment or the like, and a method for producing the multilayer body. The multilayer body has a base material (X), an adhesive layer (Y), and a base material (Z) in this order, wherein the adhesive layer (Y) contains a hydrogenated block copolymer (A) obtained by hydrogenating a block copolymer (P) containing a polymer block (a) composed of a structural unit derived from an aromatic vinyl compound and a polymer block (b) composed of a structural unit derived from a conjugated diene, the mass ratio [(a)/(b)] of the polymer block (a) to the polymer block (b) is 1/99 to 50/50, and the adhesive layer (Y) has a storage modulus G? at 100° C. of 1.2×105 to 4.0×105 Pa.
Type:
Grant
Filed:
February 25, 2021
Date of Patent:
April 9, 2024
Assignee:
KURARAY CO., LTD.
Inventors:
Daisuke Konishi, Hiromitsu Sasaki, Yuta Tomishima
Abstract: The present disclosure provides a resin pellet group including a pellet (A1) containing an ethylene-vinyl alcohol copolymer (a1), and a pellet (A2) containing an ethylene-vinyl alcohol copolymer (a2).
Abstract: Disclosed herein are activated carbons having a high decolorization performance in a liquid phase, and methods for producing the activated carbons. Disclosed herein are also activated carbons having a high decolorization performance in liquid phases having relatively high viscosities, such as sugar liquids, and methods for producing the activated carbons. Activated carbons disclosed herein include activated carbons having a pore volume, which is calculated by measuring a nitrogen adsorption isotherm at 77 K and performing the MP method analysis, of 0.58 mL/g or less, and having a pore volume at a pore diameter of 10 to 10000 nm measured by the mercury intrusion method of 0.35 mL/g or more.
Abstract: The present invention provides a spreading agent for agrochemicals having superior adhesion particularly for plant surface. The present invention also provides an agrochemical spray solution having a reduced risk of leaving the spreading agent for agrochemicals on a plant surface. The present invention relates to a spreading agent for agrochemicals comprising a carboxy-modified vinyl alcohol polymer (A) having a carboxy-containing monomer unit content of 0.1 mol % to 10 mol %, a viscosity-average degree of polymerization of 200 to 5,000, and a degree of saponification of 65 mol % to 99.9 mol %.
Abstract: A laminate is provided that has an adhesive layer including a composition containing an acrylic block copolymer, the adhesive layer being so designed that it has a small change in adhesive force over time. The laminate includes an adhesive layer (B) including an acrylic adhesive composition (Z), and a substrate layer (A) including a polyolefin resin (a), the acrylic adhesive composition (Z) including an acrylic block copolymer (I) having one or more polymer blocks (b1) containing an acrylic acid ester-derived structural unit, and one or more polymer blocks (b2) containing a methacrylic acid ester-derived structural unit, the polymer block (b1) containing a structural unit derived from an acrylic acid ester (b1-1) represented by the general formula (1) CH2?CH—COOR1 (wherein R1 denotes a C7-C12 organic group).
Type:
Application
Filed:
December 16, 2021
Publication date:
March 28, 2024
Applicant:
KURARAY CO., LTD.
Inventors:
Makoto AKAI, Tomoe TAKASAKI, Moe KAWAHARA, Tomohiro ONO
Abstract: The present invention relates to a method for producing an acetalization product of an ethylene/vinyl alcohol copolymer by acetalization of an ethylene/vinyl alcohol copolymer, wherein the ethylene/vinyl alcohol copolymer is a porous object.
Abstract: The present disclosure relates to a water-soluble film comprising polyvinyl alcohol having a polymerization degree of 100 to 3,000 and a polyhydric alcohol plasticizer.
Abstract: The present disclosure relates to a water-soluble film with polyvinyl alcohol having a polymerization degree of 100 to 3,000 and a polyhydric alcohol plasticizer.
Abstract: An alkaline battery separator containing an alkali resistant fiber and a binder, wherein the alkaline battery separator has two surfaces which are a surface A that is smoother comparing with the other surface and has an arithmetic mean surface roughness Ra (A), and a surface B that is rougher and has an arithmetic mean surface roughness Ra (B), the amount of the binder is 5 to 20% by mass based on the total mass of the separator, a value obtained by dividing the arithmetic mean surface roughness Ra (A) by the arithmetic mean surface roughness Ra (B) [Ra (A)/Ra (B)] is 0.700 or more and 0.980 or less, and the arithmetic mean surface roughness Ra (B) of the surface B is 3.0 ?m or more and 10 ?m or less.
Abstract: Provided are: porous pellets of an EVOH; and a method for producing the same, which can be accompanied by not only washing out of saponification residues in a shorter period of time, but also inhibiting conglutination of the pellets with one another during washing at a high temperature. Porous pellets of an ethylene-vinyl alcohol copolymer having pores, wherein in the porous pellets, a proportion (V2/V1×100) of a total value (V2) of pore volumes of pores having pore diameters of 0.5 to 100 ?m with respect to a total value (V1) of pore volumes of pores having pore diameters of 0.005 to 100 ?m is 25 to 40% by volume, and a pore surface area of pores having pore diameters of 0.005 to 100 ?m is 25 to 45 m2/g.
Abstract: Disclosed is a leather-like sheet having a surface configured such that, when an L* value, a C* value, and an h value under illumination of a D65 light source are represented as L*D65, C*D65, and hD65, and an L* value, a C* value, an h value under illumination of an F10 light source are represented as L*F10, C*F10, and hF10, L*D65 is 30 to 95, and at least one selected from a condition |?C|=|C*F10?C*D65|?7, and a condition |?h°|=|hF10?hD65|?7° is satisfied.
Abstract: Disclosed herein are methods for producing core-sheath structures by shaping at least one filament bundle containing a plurality of filaments to form at least one shaped strand of filaments, and braiding a plurality of strands, including the at least one shaped strand of filaments, over a core to form the core-sheath structure containing a braided sheath of the strands surrounding the core, wherein the shaped strand of filaments is an untwisted strand having a twist level of less than 1 turn per meter, a cross-sectional aspect ratio of the shaped strand of filaments is at least 3:1, as measured in the braided sheath, a thickness of at least a portion of the braided sheath ranges from about 10 to about 200 ?m, and the braided sheath comprises a synthetic fiber having a tensile strength of greater than 12 cN/dtex. Also disclosed herein are core-sheath structures formed by such methods.
Abstract: A purging agent which enables efficiently discharging a resin to be purged in a molding apparatus is provided. Porous particles contain: an ethylene-vinyl alcohol copolymer (A); and an alkali metal (B), wherein a median pore diameter is 0.01 to 3 ?m, an average particle diameter is 2.5 to 8 mm, and a content of the alkali metal (B) is 1,000 to 100,000 ppm.
Abstract: A gas separation membrane module includes at least one hollow fiber membrane element and a casing. The hollow fiber membrane element includes hollow fiber membranes and a cylindrical body. The cylindrical body extends in a longitudinal direction of the hollow fiber membranes, and accommodates the hollow fiber membranes. The hollow fiber membrane element includes sweep gas introduction ports and mixed gas discharge ports. A first supply chamber, a first discharge chamber, a second supply chamber, and a second discharge chamber are positioned between the casing and the hollow fiber membrane element. The first supply chamber, the first discharge chamber, the second supply chamber, and the second discharge chamber are partitioned off from each other.
Abstract: A hydrogenated product of a block copolymer containing a polymer block (A) that contains a structural unit derived from an aromatic vinyl compound and a polymer block (B) that contains a structural unit derived from a conjugated diene compound, which satisfies the following requirements: (1) The structural unit derived from a conjugated diene compound of the polymer block (B) has a structural unit derived from butadiene and a structural unit derived from a second conjugated diene compound which is a conjugated diene compound except butadiene. (2) The glass transition temperature is ?57° C. or lower.
Abstract: Provided are a polyamide composition containing a polyamide (A) having a melting point of 280° C. or higher and a flame retardant (B), which is such that, when a melt of the polyamide composition is injection-molded with a mold having a thickness of 0.5 mm and a width of 40 mm under the condition of a cylinder temperature higher by 20° C. than the melting point of the polyamide (A), an injection pressure of 74 MPa and a mold temperature of 140° C., the flow length is 40 mm or more, and that the melt flow rate at a temperature of 320° C. and under a load of 2.16 kg is 15 g/10 min or less; and a molded article of the polyamide composition.
Abstract: Provided are: a culture fluid for hydroponics accompanied by a large amount of water absorption by plants; an additive for a culture fluid, the additive enabling such a culture fluid to be readily prepared; and a cultivation method in which the same is used. A culture fluid for hydroponics contains water-soluble polymeric molecules, and has a surface tension at 20° C. of 45 mN/m or more and 70 mN/m or less, and a kinematic viscosity at 30° C. of 0.8 mm2/s or more and 2.00 mm2/s or less.
Abstract: A polyester polyol obtained by reacting a dicarboxylic acid component (A) with a diol component (B). The dicarboxylic acid component (A) contains a dicarboxylic acid (a1) represented by the following general formula (I) and a dicarboxylic acid (a2) represented by the following general formula (II). A content of the dicarboxylic acid (a2) is 0.02 to 3.00% by mass in 100% by mass of the total amount of the dicarboxylic acid component (A): R1, R2, R4, and R5 each independently represent a divalent hydrocarbon group having 1 to 3 carbon atoms, and R3 and R6 each independently represent a monovalent hydrocarbon group having 1 to 3 carbon atoms.