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Absorbent resin particle, and absorber and absorbent article employing the same

A technology of resin particles and absorbency, which is applied in absorbent pads, medical science, bandages, etc. It can solve the problems of reduced absorption capacity and absorption speed, easy leakage, etc., and achieves excellent balance, dry touch feeling, and excellent absorption time. good effect

Inactive Publication Date: 2006-10-11
SAN DIA POLYMERS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Absorbent articles (disposable diapers, etc.) using existing cross-linked polymers have the following problems: when the user sits down or lies down in the wearing state, the absorption amount and absorption speed of the absorbed liquid are reduced, and the The result is prone to leakage etc.

Method used

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  • Absorbent resin particle, and absorber and absorbent article employing the same
  • Absorbent resin particle, and absorber and absorbent article employing the same
  • Absorbent resin particle, and absorber and absorbent article employing the same

Examples

Experimental program
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Effect test

Embodiment 1

[0320] Add 40 parts of material (DD11) and 0.4 parts of diffusion penetrant (E1) ("SANMORIN OT 70" manufactured by Sanyo Chemicals Co., Ltd., anionic surfactant) to 400 parts of hydrogel-like polymer (AA-1), Knead at 25° C. for 5 minutes using a shredder (hole diameter of a porous plate: 6 mm, manufactured by Iizuka Industrial Co., Ltd., “12VR-400K”), and then use a ventilated belt dryer at 135° C. at a wind speed of 2.0 m / sec. Drying is carried out under certain conditions to obtain a dried polymer.

[0321] Use a commercially available fruit juice extractor to pulverize the dried polymer, adjust the particle size to 25 μm to 600 μm using sieves with sieve openings of 600 μm and 250 μm, and then stir at a high speed (a high-speed stirring turbulence enhancer manufactured by Hosokawa Micron Co.: 2000 rpm ) 100 parts of the granules, spray and add 2 parts of ethylene glycol diglycidyl ether 10% water / methanol mixed solution (weight ratio of water / methanol=70 / 30) and mix, stand ...

Embodiment 2

[0323] Absorbent resin particles (2) were obtained in the same manner as in Example 1 except that material (DD12) was used instead of material (DD11).

Embodiment 3

[0325] Absorbent resin particles (3) were obtained in the same manner as in Example 1 except that material (DD13) was used instead of material (DD11).

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Abstract

An absorbent resin particle, an absorbent body and an absorbent article using the same. The absorbent resin particles comprise a cross-linked polymer (A) formed from a water-soluble vinyl monomer (a1) and / or by hydrolysis ( The vinyl monomer (a2) of a1) and the internal crosslinking agent (b) are essential constituent units, and the absorbent resin particle has a structure in which part or all of (C) is contained in the absorbent resin particle. The present invention can provide absorbent resin particles that can be used in absorbent articles that exhibit high absorption performance (absorption capacity and absorption speed) in any state and are less prone to leakage, and absorbent bodies and absorbent articles using the same.

Description

technical field [0001] The present invention relates to absorbent resin particles, absorbent bodies and absorbent articles using the absorbent resin particles. Background technique [0002] Cross-linked polymers in which absorption is increased by changing and optimizing the amount of polymerization initiator, polymerization temperature, polymerization concentration, etc., and by using a chain transfer agent such as mercaptan are known (see Patent Document 1 below). In addition, many proposals have been made for crosslinked polymers to improve the absorption capacity under load, etc. by treating the vicinity of the surface of polymer particles, etc. (see Patent Documents 2 and 3 below). Furthermore, there has also been proposed a cross-linked polymer in which the absorption rate is increased by making polymer particles porous (see Patent Document 4 below). [0003] (Patent Document 1): JP 3-179008A [0004] (Patent Document 2): JP 267529B [0005] (Patent Document 3): EP ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/12A61L15/60C08F2/44C08J3/20
CPCA61L15/60C08J3/12C08J3/20
Inventor 齐藤太香雄田川大辅
Owner SAN DIA POLYMERS LTD
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