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

一种树脂粒子、吸收性的技术，应用在吸收垫、医药科学、绷带等方向，能够解决吸收量和吸收速度降低、易产生渗漏等问题，达到平衡极佳、干爽接触感、良好吸收性能的效果

Inactive Publication Date: 2008-07-30
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
Comparison scheme
Effect test

Embodiment 1

[0319] 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.

[0320] Use a commercially available fruit juice extractor to pulverize the dried polymer, adjust the particle size to 250 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

[0322] 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

[0324] 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 comprising a crosslinked polymer (A) and a hydrophobic substance (C), the crysslinked polymer (A) including, as essential constituent units, a water-soluble vinyl monomer (a1), and / or a vinyl monomer (a2) that is formed into the water-soluble vinyl monomer (a1) by hydrolysis, and an internal crosslinking agent (b), is provided, wherein the absorbent resin particle has a structure such that a part or an entirety of the hydrophobic substance (C) is contained in the inside of each particle of the absorbent resin particle. Further, an absorber and an absorbent article in which the foregoing absorbent resin particle is employed are provided also. It is possible to provide the absorbent resin particle applicable for forming an absorbent article that exhibits a high absorption performance (absorption amount and absorption rate) under any condition and is substantially free from leakage, and an absorber as well as an absorbent article in which this absorbent resin particle are employed.

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 Patents(China)
IPC IPC(8): C08J3/12C08F2/44A61L15/60C08J3/20
CPCC08J3/20C08J3/12A61L15/60
Inventor 齐藤太香雄田川大辅
Owner SAN DIA POLYMERS LTD
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