The present invention relates to a super absorbent polymer. The super absorbent polymer exhibits excellent initial absorption capacity, and thus can provide a sanitary material such as a diaper or a sanitary napkin which can quickly absorb body fluids and impart a dry and soft touch feeling.

The present invention relates to a super absorbent polymer. The super absorbent polymer exhibits excellent initial absorption capacity, and thus can provide a sanitary material such as a diaper or a sanitary napkin which can quickly absorb body fluids and impart a dry and soft touch feeling.

The present invention relates to a super absorbent polymer. The super absorbent polymer exhibits excellent initial absorption capacity, and thus can provide a sanitary material such as a diaper or a sanitary napkin which can quickly absorb body fluids and impart a dry and soft touch feeling.

A method of producing a medical device having a substrate and a hydrophilic polymer layer, including the steps of: pretreating the substrate by placing the substrate in an alkali solution and heating the substrate at a temperature ranging from 50° C. to 100° C.; and heating a solution containing the pretreated substrate, a hydrophilic polymer having an acidic group and a hydroxyalkyl group, and an organic acid at a temperature ranging from 50° C. to 100° C. Provided is a simple method of producing a medical device imparted with hydrophilicity excellent in durability.

A method of producing a medical device having a substrate and a hydrophilic polymer layer, including the steps of: pretreating the substrate by placing the substrate in an alkali solution and heating the substrate at a temperature ranging from 50° C. to 100° C.; and heating a solution containing the pretreated substrate, a hydrophilic polymer having an acidic group and a hydroxyalkyl group, and an organic acid at a temperature ranging from 50° C. to 100° C. Provided is a simple method of producing a medical device imparted with hydrophilicity excellent in durability.

A method of assembling an absorbent article having the steps of: a) providing a hot melt adhesive composition, wherein the adhesive has an amorphous polyolefin composition with more than 40% 1-butene and from about 10 wt. % to about 50 wt. % of a second amorphous polymer, and wherein the hot melt adhesive composition comprises less than 5% of a tackifier; b) providing a plurality of absorbent article components; and c) joining at least one of the absorbent article components to another of the absorbent article components using the adhesive so as to assemble the absorbent article.

A method of assembling an absorbent article having the steps of: a) providing a hot melt adhesive composition, wherein the adhesive has an amorphous polyolefin composition with more than 40% 1-butene and from about 10 wt. % to about 50 wt. % of a second amorphous polymer, and wherein the hot melt adhesive composition comprises less than 5% of a tackifier; b) providing a plurality of absorbent article components; and c) joining at least one of the absorbent article components to another of the absorbent article components using the adhesive so as to assemble the absorbent article.

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.

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.

An article having anti-microbial effect is provided. The article includes an occlusive layer and a substrate having a nanostructured surface. The nanostructured surface is coated with a metal oxide layer and the metal oxide layer includes a metal oxide.