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Method for preparing a superabsorbent polymer

A superabsorbent, polymer technology, applied in the direction of absorbent pads, medical science, bandages, etc., can solve problems such as deterioration of absorption rate

Active Publication Date: 2018-11-09
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the above method can achieve high absorption speed and permeability, the absorption rate deteriorates

Method used

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  • Method for preparing a superabsorbent polymer
  • Method for preparing a superabsorbent polymer

Examples

Experimental program
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Effect test

experiment example

[0157] The properties of each superabsorbent polymer prepared in Examples and Comparative Examples were measured and evaluated as follows.

[0158] (1) According to the ratio of particle shape

[0159] Superabsorbent polymer particles were observed with a scanning electron microscope (SEM) to count swollen particles (in which depressions due to swelling occupy 1 / 3 or more of the particle surface) in the total particles (classified if the ratio is less than 1 / 3 are porous particles), porous particles (which contain three or more pores or depressions on the surface with a depth of 10 μm or greater), and unsheared particles (which have a smooth surface due to no particle deformation during the shredding process). surface) ratio.

[0160] Wherein, the expanded particles in the superabsorbent polymer particles according to Example 1 [ figure 1 (a)], porous particles [ figure 1 (b)] and unsheared particles [ figure 1 (c)] SEM images are shown in figure 1 middle.

[0161] (...

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Abstract

The present invention relate to a method for preparing a superabsorbent polymer. The method for preparing a superabsorbent polymer, according to the present invention, allows a superabsorbent polymerhaving an excellent absorption coefficient, absorption rate, and permeability to be provided.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims the benefit of Korean Patent Application No. 10-2017-0011253 filed with the Korean Intellectual Property Office on January 24, 2017, the disclosure of which is incorporated herein by reference in its entirety. [0003] The present invention relates to a process for the preparation of superabsorbent polymers. Background technique [0004] Super Absorbent Polymer (SAP) is a synthetic polymer material that can absorb 500 to 1000 times its own weight of water, also named Super Absorbent Material (Super AbsorbencyMaterial, SAM), absorbent gel Adhesive material (Absorbent Gel Material, AGM), etc. [0005] Superabsorbent polymers started to be commercialized as sanitary products, and are now widely used as sanitary products (such as disposable diapers, etc.), water-retaining materials for soil, water-stopping materials for civil engineering and construction, sheets for seedlings, foo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/24C08J3/12C08J9/04
CPCC08J3/12C08J3/245C08J9/104C08J2333/06C08J2333/08C08J2333/10C08J9/06C08J2205/022C08F2/10C08F220/06C08F222/1063C08F222/102C08J9/04C08J2300/14A61L15/24A61L15/60B01J20/267B01J20/28004B01J20/28016B01J20/3007B01J20/3085B29B9/06B29K2033/08B29K2105/24B29K2995/0068C08F2800/20C08F2810/20C08J3/24
Inventor 金东贤安泰彬李俊宜韩章善
Owner LG CHEM LTD
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