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Super absorbent resin

A super absorbent, weight technology, applied in absorbent pads, medical science, bandages, etc., can solve the problem of rewetting that has not been proposed, and achieve the effect of avoiding rewetting, high absorption rate, and optimized size

Active Publication Date: 2017-11-28
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a specific method that can effectively avoid the rewetting phenomenon has not been proposed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0139] Example 1: Preparation of superabsorbent polymer

[0140] 11 g (110 ppm relative to the monomer composition) of 0.5% IRGACURE 819 initiator diluted with acrylic acid and 26 g of 5% polyethylene glycol diacrylate (PEGDA, molecular weight 400) diluted with acrylic acid were mixed to prepare a solution (solution A).

[0141] 5% trimethylolpropane triacrylate (ethoxylated TMPTA, TMP(EO)9TA, M-3190 Miwon Specialty Chemical Co., Ltd.) containing 9 mol% ethylene oxide diluted with acrylic acid was prepared as solution B .

[0142] 37 g of solution A and 14 g of solution B were injected into a 2 L volume glass reactor surrounded by a jacket in which a heating medium precooled to 25° C. was circulated. 2.8 g of a solution of 1% OFX-0193 (XIAMETER(R)) diluted with acrylic acid as a surfactant was injected into the glass reactor and mixed, then 800 g of 24% caustic soda solution (solution C) was slowly added dropwise and mixed . After confirming that the temperature of the m...

Embodiment 2

[0149] Example 2: Preparation of superabsorbent polymer

[0150] A base polymer was prepared in the same manner as in Example 1 except that 15 g of Solution D was used instead of 34 g in Example 1. The prepared base polymer had a centrifuge retention capacity of 35.2 g / g and a water-soluble component content of 13.9% by weight. The prepared base polymer was used in the same manner as in Example 1 to obtain a surface-crosslinked superabsorbent polymer having a particle size of 150 μm to 850 μm.

Embodiment 3

[0151] Example 3: Preparation of superabsorbent polymer

[0152]0.1 g of Aerosil 200 (EVONIK) was added to 100 g of the surface-crosslinked superabsorbent polymer prepared in Example 1, followed by dry mixing to obtain a superabsorbent polymer.

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Abstract

The present invention relates to a super absorbent resin, and the super absorbent resin can exhibit a fast absorption rate and high gel strength even in a partially swollen state through the size optimization of partially swollen gel particles. Therefore, the use of the super absorbent resin can effectively prevent a rewetting phenomenon.

Description

technical field [0001] Cross References to Related Applications [0002] This application is based on and claims priority from Korean Patent Applications No. 10-2015-0077534 and No. 10-2016-0067426 filed on June 1, 2015 and May 31, 2016, respectively, the disclosures of which are incorporated by reference in their entirety Incorporated into this article. [0003] The present invention relates to superabsorbent polymers having a significantly improved anti-rewetting effect. Background technique [0004] Super Absorbent Polymer (SAP) is a synthetic polymer material capable of absorbing approximately 500 to 1,000 times its own weight in water. Various manufacturers name it by different names, such as SAM (Super Absorbent Material, super absorbent material), AGM (Absorbent Gel Material, absorbent gel material) and the like. Since such superabsorbent polymers began to be practically used in hygiene products, they are now widely used not only in hygiene products such as dispos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/06C08F220/06
CPCC08F283/065C08F220/06A61L15/22A61L15/60C08F2/44C08J9/0061C08J9/0066C08J9/20C08J9/224C08F6/008C08J2201/026C08J2205/022C08J2333/04C08J2483/12B01J20/261B01J20/265B01J20/3078B01J2220/68C08G77/46C08J3/12B01J20/267B01J20/28004B01J20/28016B01J20/28047B01J20/3021B01J20/3064B01J20/3085C08J3/075C08J3/245C08J9/08C08J2203/02C08J2333/02C08L83/04C08J2300/14C08J2203/10
Inventor 李相琪南惠美黄民浩李水珍张太焕
Owner LG CHEM LTD
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