Preparation method of high-water-absorbing resin with broad-spectrum antibacterial property

A super absorbent resin, broad-spectrum antibacterial technology, applied in the field of super absorbent resin preparation, can solve the problems of easy elution, easy shedding, poor heat resistance of organic antibacterial agents, etc., to improve antibacterial ability, overcome easy discoloration, high The effect of antibacterial properties

Active Publication Date: 2017-11-24
SHANDONG NUOER BIOLOGICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that the superabsorbent resin has poor antibacterial performance due to the use of inorganic antibacterial agents that are easy to change color and fall off, and organic antibacterial agents that have poor heat resistance and easy elution.

Method used

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  • Preparation method of high-water-absorbing resin with broad-spectrum antibacterial property
  • Preparation method of high-water-absorbing resin with broad-spectrum antibacterial property

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preparation example Construction

[0034] The invention provides a method for preparing a superabsorbent resin with broad-spectrum antibacterial properties, comprising the following steps:

[0035] (1) Acrylic acid, cross-linking agent and water carry out polymerization reaction under the initiation of initiator to obtain resin colloid.

[0036] This step is a polymerization reaction step, and the final product is resin colloid. In order to ensure that the polymerization reaction proceeds smoothly, it can be carried out as follows:

[0037] (11) Mix acrylic acid and water to adjust the pH of the acrylic acid solution to 6-7;

[0038] (12) cooling the acrylic acid solution to the initiation temperature, adding a crosslinking agent and an initiator after purging nitrogen to remove oxygen, and a polymerization reaction occurs, and the temperature of the system continues to rise;

[0039] (13) When the temperature of the system no longer rises, heat preservation treatment is carried out at the heat preservation t...

Embodiment 1

[0064] The weight parts of raw materials used are: 220 parts of acrylic acid, 86 parts of sodium hydroxide, 694 parts of deionized water, crosslinking agent: 2.5 parts of tetraallyloxyethane, initiator: 0.8 parts of potassium persulfate and 0.4 parts of sodium bisulfite Parts, reinforcing agent: 2 parts of aluminum sulfate and 1 part of silicon dioxide, surface crosslinking liquid: 8 parts of ethylene glycol and 4 parts of butanediol diglycidyl ether, CTS-Ag-SiO 2 0.05 part of compound antibacterial agent.

[0065] Among them, CTS-Ag-SiO 2 Composite antibacterial agent is prepared by the following method:

[0066] Prepare silver ammonia solution: take 0.1g silver nitrate solid, dissolve it with 55mL distilled water, add 1mol / L ammonia water to form a precipitate, continue to add ammonia water until the solution is transparent, then add potassium hydroxide solid until another precipitate forms, at this time the solution becomes Black, then add ammonia water until the solution...

Embodiment 2

[0078] The parts by weight of raw materials used are: 250 parts of acrylic acid, 97 parts of sodium hydroxide, 653 parts of deionized water, crosslinking agent: 3.3 parts of trimethylolpropane triacrylate, initiator: 1.2 parts of potassium persulfate and sodium bisulfite 0.7 parts, reinforcing agent: 2.5 parts of alumina and 1.5 parts of kaolin, surface cross-linking liquid: 10 parts of glycerol and 3.5 parts of polyglycidyl ether of polyglycerol, CTS-Ag-SiO 2 Composite antibacterial agent 0.01 part.

[0079] CTS-Ag-SiO 2 The preparation method of composite antibacterial agent is with embodiment 1.

[0080] The specific preparation process of superabsorbent resin is as follows:

[0081] S1:

[0082] Mix acrylic acid and water, neutralize the pH of the acrylic acid solution to 6.3 with sodium hydroxide;

[0083] Cool the acrylic acid solution to 25°C, add a crosslinking agent and an initiator to initiate a polymerization reaction after purging nitrogen to remove oxygen, and...

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Abstract

The invention relates to a preparation method of high-water-absorbing resin with broad-spectrum antibacterial property. The preparation method comprises the following steps: (1) carrying out polymerization reaction on acrylic acid, a crosslinking agent and water under initiation of an initiator to obtain resin colloid; (2) treating the resin colloid to obtain resin granules; and (3) adding a reinforcing agent into the resin granules, mixing uniformly, then adding a CTS-Ag-SiO2 composite antibacterial agent and surface crosslinking liquid, and carrying out high-temperature treatment to obtain high-water-absorbing resin. The preparation method has the advantages that the antibacterial and sterilizing effects of the high-water-absorbing resin prepared by using the CTS-Ag-SiO2 composite antibacterial agent for staphylococcus aureus or escherichia coli are far better than those of the traditional antibacterial agent, and the anti-yellowing capability is greatly enhanced, so that the high-water-absorbing resin is more applicable to the fields of baby diapers and feminine hygiene products and the like.

Description

technical field [0001] The invention relates to the technical field of polymerized functional polymer chemical additives, in particular to a preparation method of a superabsorbent resin with broad-spectrum antibacterial properties. Background technique [0002] Superabsorbent resins are widely used in the field of sanitary products such as diapers and sanitary napkins because of their super water absorption and retention capacity. However, due to the lack of antibacterial ability, the application of superabsorbent resin is limited. At present, sanitary products such as diapers and sanitary napkins on the market have a certain shelf life and the time is relatively short. After the shelf life is exceeded, the yellowing of superabsorbent resin will be serious and the antibacterial effect will be greatly reduced. During the use of sanitary products such as diapers and sanitary napkins, if the antibacterial ability is not up to standard, microorganisms will easily breed and enda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/02C08L5/08C08K13/02C08K3/36C08K3/08C08F220/06C08F216/00C08F222/10C08F222/38C08F220/58
CPCC08F220/06C08L33/02C08K2201/014C08K2003/0806C08L2201/08C08L5/08C08K13/02C08K3/36C08K3/08C08F222/103C08F222/385C08F216/00C08F220/58
Inventor 荣敏杰李振许永升于庆华荣帅帅
Owner SHANDONG NUOER BIOLOGICAL TECH
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