To provide a disposable diaper enabling reduction in re-wet amount and having an excellent speed of incorporating liquid regardless of concentration and configuration of a water-absorbing agent in an absorbent material.

A water-absorbing agent having excellent Gel Capillary Absorption (GCA) and Free Gel Bed Permeability (FGBP) is obtained by crushing a crosslinked hydrogel polymer obtained in a polymerization step to have a specific weight average particle diameter while fluid retention capacity and a surface tension of a water-absorbing agent are adjusted in a specific range, drying the crushed crosslinked hydrogel polymer, and then adding a liquid permeability enhancer thereto during surface crosslinking or after surface crosslinking.

Improved hydrogel configurations for use with a TTField-generating system is disclosed. Also disclosed are kits containing the improved hydrogel configurations and methods of producing and using the improved hydrogel configurations.

It is an object to provide a water-absorbing resin that while maintaining water-absorbing resin physical properties such as water absorption performance, has a sufficiently reduced odor produced during swelling. The object is attained by causing the water-absorbing resin to be a water-absorbing resin which is a surface-crosslinked water-absorbing resin, the water-absorbing resin having a volatile component concentration of 3.5 ppm or less as measured when the water-absorbing resin is caused to stand still for 15 minutes under a condition that the water-absorbing resin has a swelling capacity of 1.0-fold.

The present invention relates to an aqueous binder for a heat-insulating and sound-absorbing inorganic fiber material, the aqueous binder comprising a polymer having a carboxy group and a crosslinking agent for the polymer, wherein the crosslinking agent comprises an alkanol monoamine and a polyamine having an imino group, the polyamine has an amine value of 1200 to 1650 mg KOH/g, and a ratio of the total number of moles of amino groups and imino groups in the crosslinking agent with respect to the total number of moles of hydroxyl groups, amino groups, and imino groups in the crosslinking agent is 0.6 or less.

The present disclosure relates to water-absorbent resin particles in which a contact angle of 0.9% by mass saline at 25° C.±2° C. is 100 degrees or larger, and an absorbent material containing the water-absorbent resin particles.

A gas barrier film formed of a cured product of a mixture including a polycarboxylic acid, a polyamine compound, and a polyvalent metal compound, in which in an infrared absorption spectrum of the gas barrier film, an area ratio of an amide bond represented by B/A is equal to or less than 0.380, an area ratio of a carboxylic acid represented by C/A is equal to or less than 0.150, and an area ratio of carboxylate represented by D/A is equal to or more than 0.520.

The present invention relates to superabsorbent polymer and a method for preparing the same. The present invention can provide a superabsorbent polymer in which a hydrophobic material having an HLB of 0-6, a hydrophilic polymer and a surface cross-linking agent are mixed into a base resin, thereby having improved rewetting characteristics and permeability through surface-modification of the base resin.

Disclosed are a superabsorbent polymer having improved anti-caking properties and a method of preparing the same, and the superabsorbent polymer having improved anti-caking properties includes a superabsorbent polymer, microparticles, and water, and to improve anti-caking properties of the superabsorbent polymer, the temperature of the superabsorbent polymer or water upon addition of water or the aging time upon stirring is adjusted, thereby preventing caking of the particles.

A method for preparing a super absorbent polymer and a superabsorbent polymer prepared from the same are disclosed herein. In some embodiments, a method includes mixing super absorbent polymer particles, water and an additive form a hydrated super absorbent polymer, wherein the super absorbent polymer particles comprise a base polymer powder including a cross-linked polymer polymerized from a water-soluble ethylenically unsaturated monomer having an acidic group of which at least a part is neutralized, and a surface cross-linked layer formed on the base polymer powder, wherein the surface cross-linked layer is formed by further cross-linking the cross-linked polymer, and wherein the additive including a polyoxyalkylene aliphatic hydrocarbon ether carboxylic acid. The method can appropriately control the water content of the super absorbent polymer by water-addition or the like to suppress crushing or the like during transfer, and also can suppress deterioration of physical properties.

Provided are both a superabsorbent polymer capable of continuously and safely exhibiting an improved bacterial growth inhibitory property and a deodorant property without deterioration in the physical properties of the superabsorbent polymer, such as water retention capacity, absorption under pressure, etc., as well as a preparation method for the superabsorbent polymer.