Abstract: Provided are a water-absorbent resin easily separable from a recyclable resource in recovering the recyclable resource, and an absorbent article containing an absorbent material containing the water-absorbent resin. The water-absorbent resin according to the present invention has such a structure that a polymer formed from a water-soluble ethylenically unsaturated monomer is crosslinked by using a post-crosslinking agent. The water-absorbent resin has (1) a water-retention capacity for physiological saline of 35 g/g or more, (2) a water-absorption capacity for physiological saline under a load of 4.14 kPa of 10 mL/g or more, (3) an initial gel viscosity of 3000 mPa·s or more, and (4) a gel decomposition index of 0.60 or less: gel decomposition index=B/A wherein A represents an initial gel viscosity (mPa·s), and B represents a gel viscosity after one day (mPa·s).

Abstract: Disclosed is an additive for nonaqueous electrolyte solutions, which includes a compound represented by the following formula (1): in the formula (1), Q represents an optionally substituted alkenylene group having 4 to 7 carbon atoms and forming a cyclic group together with the sulfur atom of the sulfonyl group, X represents a sulfonyl group, a phosphoryl group, or a carbonyl group, R1 represents an optionally substituted alkyl group having 1 to 4 carbon atoms or the like, and n represents 1 or 2.

Abstract: An apparatus for manufacturing an absorbent body according to the present invention includes a conveying unit (2) that conveys an aggregate (101) of absorbent fibers and a water-absorbent resin (102), a mixing unit (3) that accepts the aggregate of the absorbent fibers and the water-absorbent resin that were conveyed by the conveying unit and mixes the absorbent fibers and the water-absorbent resin, a chamber portion (4) that has an internal space (40) through which the absorbent fibers and the water-absorbent resin that were mixed in the mixing unit fall, a stacking portion (5) that is disposed below the chamber portion and has a recessed portion (531) in which the absorbent fibers and the water-absorbent resin that fall through the chamber portion are stacked, and a suction unit (6) that causes a negative pressure in the chamber portion.

Abstract: Provided are: a water-absorbent resin that has excellent heat resistance, even in a water-absorbed state; and a water-blocking material comprising the water-absorbent resin. The water-absorbent resin according to the present invention includes a crosslinked polymer of a water-soluble ethylenically unsaturated monomer, and has a gel-viscosity retention S of 0.5 or more as calculated by the following formula (I): Gel-viscosity retention at high temperature S=B/A??(I) (wherein A represents an initial gel viscosity (mPa·s), and B represents a gel viscosity (mPa·s) after 10 days).

Abstract: Disclosed is an additive for nonaqueous electrolyte solutions, including a first compound represented by the formula (1), and at least one second compound selected from the group consisting of an ethylene carbonate compound, a vinyl ethylene carbonate compound, a cyclic sulfonic acid ester compound, and a cyclic disulfonic acid ester compound, in the formula (1), X represents a sulfonyl group or a carbonyl group, and R1 represents an alkyl group having 1 to 4 carbon atoms and optionally substituted with a halogen atom or the like.

Abstract: Disclosed are water-absorbent resin particles comprising a crosslinked polymer comprising a monomer unit derived from a water-soluble ethylenically unsaturated monomer, wherein an artificial menstrual blood volume increase rate as measured in an artificial menstrual blood swelling test conducted in the order of i), ii), and iii) is 70% or more. i) putting 1.0 g of water-absorbent resin particles into a measuring cylinder with an inner diameter of 27 mm. ii) injecting 10 ml of artificial menstrual blood into the cylinder at once to swell the water-absorbent resin particles. iii) measuring a volume (A) of the swollen water-absorbent resin particles after 60 seconds from the injection and calculating an artificial menstrual blood volume increase rate according to Equation (I) below. Artificial menstrual blood volume increase rate (%)=(A?B)/B×100 . . . (I), A . . . Volume (ml) of swollen water-absorbent resin particles, B . . . Volume (ml) of injected artificial menstrual blood.

Abstract: Provided is a water-absorbent resin that quickly absorbs water, even in sandbag in which a large amount of the water-absorbent resin has been used, that does not easily form unswollen lump, and that has a high gel swelling volume when water is used to swell the water-absorbent resin. This water-absorbent resin is configured from a polymer of water-soluble ethylenic unsaturated monomers. The physiological-saline absorption capacity of the water-absorbent resin is 40-60 g/g. When a cross-sectional image of the water-absorbent resin is observed by x-ray computed tomography, the fraction of the area of the cross-sectional image that is hollow portions (the hollow area ratio of the cross-sectional image), as calculated on the basis of formula (I), is no more than 10%.

Abstract: Provided is a technique for preparing an excellent viscous composition with a pH of about 4 to 5.5 by using a copolymer obtained by polymerizing a (meth)acrylic acid, a (meth)acrylic acid alkyl ester having an alkyl group with 10 to 30 carbon atoms, and additionally, a compound with two or more ethylenically unsaturated groups. More specifically, provided is, for example, a viscous composition comprising (A) a copolymer obtained by polymerizing 100 parts by mass of a (meth)acrylic acid, 0.5 to 5 parts by mass of a (meth)acrylic acid alkyl ester having an alkyl group with 10 to 30 carbon atoms, and 0.001 to 0.2 parts by mass of a compound with two or more ethylenically unsaturated groups, (B) a carboxylic acid metal salt, and (C) a carboxylic acid; and having a pH of 4 to 5.5, and a viscosity of 1000 to 50000 mPa·s.

Abstract: A water-absorbent resin that can reduce the amount of backflow of an absorbed liquid even when the water-absorbent resin is used at a low content in an absorbent material is provided. An absorbent article comprising an absorbent material containing the resin is also provided. The resin is a crosslinked polymer of a water-soluble ethylenically unsaturated monomer and has a dry-up index of 1.85 or more, as represented by equation (1): dry-up index=overall absorption capacity term ?×water absorption rate term ???(1) where the overall absorption capacity term ? and the water absorption rate term ? are determined according to equations (2) and (3): overall ? ? absorption ? ? capacity ? ? term ? ? ? = ( physiological ? ? saline ? ? absorption ? capacity ? ? under ? ? a ? ? load ? ? of ? ? 2.07 ? ? kPa - physiological ? ? saline ? ? absorption ? capacity ? ? under ? ? a ? ? load ? ? of ? ? 4.

Abstract: Provided is an epoxy resin composition maintaining excellent adhesion and having low dielectric tangent. Specifically, provided is an epoxy resin composition comprising a specific epoxy resin and a phenol-based curing agent.

Abstract: An object of this invention is to find a method for introducing a functional group into an aliphatic polycarbonate without impairing the excellent thermal decomposition property of the aliphatic polycarbonate.

Abstract: A lithium ion secondary battery includes a positive electrode having a positive electrode active material layer on a current collector, a negative electrode having a negative electrode active material layer on a current collector, and a separator disposed between the positive electrode and the negative electrode and impregnated with a non-aqueous electrolyte solution. The positive electrode active material layer contains a positive electrode active material and a binder, the negative electrode active material layer contains a negative electrode active material and a binder, the binder of the negative electrode active material layer contains a copolymer of vinyl alcohol and an alkali metal neutralized product of ethylenically unsaturated carboxylic acid, and the separator includes a polymeric base material containing an inorganic compound or includes a polymer having a melting point or glass transition temperature of 140° C. or higher.

Abstract: To provide a cosmetic which is environmentally friendly and is excellent in all of spreadability on application, adhesion, hand feeling properties and transparency. A cosmetic including aliphatic polyester-based resin particles, wherein the aliphatic polyester-based resin particles have a volume-average particle diameter of 2 to 30 ?m, and a ratio of particles having a particle diameter of less than 1 ?m is 15% by volume or less and a ratio of particles having a particle diameter of more than 30 ?m is 6% by volume or less, is provided.

Abstract: The polyisoprene-containing latex composition of the present it comprises the following components (a) and (b): (a) zinc ethylphenyldithiocarbamate; and (b) 1-o-tolylbiguanide. Thus, a molded article of the latex composition has high tensile strength. Further, even after the latex composition is stored for a longer period of time than before, a decrease in the tensile strength of the obtained molded article is suppressed.

Abstract: Provided is a viscous composition that comprises a carboxyl-group-containing water-soluble copolymer, the composition having excellent viscosity even when an amino acid-based surfactant is contained in an amount greater than that of betaine. More specifically, provided is a viscous composition comprising (A) a copolymer obtained by polymerizing at least 100 parts by mass of a (meth)acrylic acid and 0.5 to 5 parts by mass of a (meth)acrylic acid alkyl ester having an alkyl group with 10 to 30 carbon atoms, (B) an amino acid-based surfactant, (C) a betaine, (D) an alkyl glycoside, and (E) an organic acid salt, wherein the mass content of (B) is equal to or greater than the mass content of (C).

Abstract: Provided is an aqueous dispersion composition that comprises a carboxyl-group-containing water-soluble copolymer in a relatively high concentration, but has intact handleability. More specifically, provided is, for example, an aqueous dispersion composition comprising 4 to 8 mass % of a copolymer obtained by polymerization in the presence of a nonionic surfactant with one or more polyoxyethylene chains, the copolymer being at least one member selected from the group consisting of (1) copolymers obtained by polymerizing the following (i) and (ii), (2) copolymers obtained by polymerizing the following (i) and (iii), and (3) copolymers obtained by polymerizing the following (i), (ii), and (iii): (i) 100 parts by mass of a (meth)acrylic acid; (ii) 0.001 to 1 part by mass of a compound with two or more ethylenically unsaturated groups; and (iii) 0.5 to 5 parts by mass of a (meth)acrylic acid alkyl ester having an alkyl group with 10 to 30 carbon atoms.

Abstract: Disclosed are water-absorbent resin particles comprising a crosslinked polymer comprising a monomer unit derived from a water-soluble ethylenically unsaturated monomer, wherein an initial swelling force as measured according to a swelling force test conducted by a predetermined method is 8 N or more, and further, a ratio of the particles having a particle diameter of more than 250 ?m and 850 ?m or less is 70% by mass or more and a ratio of the particles having a particle diameter of 250 ?m or less is 20% by mass or less, with respect to the total amount of the water-absorbent resin particles.

Abstract: The present invention provides an epoxy resin adhesive that exhibits low shrinkage and excellent adhesiveness. The epoxy resin adhesive includes (A) an epoxy resin, (B) a curing agent, and (C) a particulate polyolefin-based resin having a volume average particle size of 1 to 25 ?m, wherein the particulate polyolefin-based resin is spherical, and wherein the particulate polyolefin-based resin is present in an amount of 1 to 50 parts by mass per 100 parts by mass of the epoxy resin.

Abstract: The present invention provides a method that enables the use of an aqueous solution of a copolymer of vinyl alcohol and an alkali metal neutralized product of ethylenically unsaturated carboxylic acid or carboxymethyl cellulose or a salt thereof, as a binder for secondary batteries, without causing a significant viscosity increase even if stored in the state of an aqueous solution. More specifically, the present invention provides a composition in the form of an aqueous solution containing a copolymer of vinyl alcohol and an alkali metal neutralized product of ethylenically unsaturated carboxylic acid and/or carboxymethyl cellulose or a salt thereof, wherein when the viscosity of the composition after being diluted with water (25° C. or less) to a viscosity of 200±100 mPa·s at room temperature (25° C.) and being adjusted to a temperature of 25° C. is defined as Xa1 (Pa·s), and the viscosity of the composition after being placed in an airtight container and being allowed to stand at 95° C.