Bacteriostatic deodorant super absorbent resin and absorbent products of super absorbent resin

A technology of superabsorbent resin and absorbent layer, which is applied in the field of antibacterial and deodorizing superabsorbent resin and absorbent products using antibacterial and deodorizing superabsorbent resin, which can solve the problem of limited antibacterial effect, affecting antibacterial durability, and Poor salt performance and other issues

Inactive Publication Date: 2017-12-22
浙江卫星新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Looking at the known technologies in this field, it mainly achieves the antibacterial effect by adding nano-silver ions or quaternary ammonium salt ions, but the above-mentioned method is applied to personal daily necessities for women and children, except that there is a relatively large safety hazard, and it is harmful to the user's body. In addition to causing harm, using Ag+ directly as antibacterial ions also has the following defects: (1) Ag+ is easily reduced to simple silver and turns black, which affects the application of silver ion antibacterial agents in light-colored products, and has poor discoloration resistance; (2) Ag2O precipitation is easy to form in an alkaline environment, and the slow-release performance is poor, which affects the antibacterial persistence; (3) when

Method used

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  • Bacteriostatic deodorant super absorbent resin and absorbent products of super absorbent resin
  • Bacteriostatic deodorant super absorbent resin and absorbent products of super absorbent resin
  • Bacteriostatic deodorant super absorbent resin and absorbent products of super absorbent resin

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preparation example Construction

[0063] The method for preparing the antibacterial and deodorizing super absorbent resin of the present invention includes emulsion polymerization, reverse (reverse) suspension polymerization, bulk polymerization, and aqueous solution polymerization. The preparation method is preferably an aqueous polymerization method. The preparation process of the aqueous solution polymerization method includes the following steps: the super absorbent resin of the present invention is added to a mixed solution of acrylic acid / acrylic acid salt which is diluted with deionized water and neutralized by a basic compound and acrylic acid monomer solution. The initial crosslinking agent, initial dispersant and mixing uniformly, add 0-80% of the antibacterial agent and continue to stir evenly, heat up to 35℃-70℃, add the colloidal super absorbent resin polymerized by the initiator, the colloidal super absorbent resin The water-absorbent resin is sequentially granulated, dried, and surface treated wit...

Embodiment 1

[0076] Accurately weigh 200g acrylic acid, 70g sodium hydroxide, 210g deionized water, 0.2g N,N'-methylenebisacrylamide, 0.1g sodium bisulfite, 0.2g ammonium persulfate, 0.01g polyvinylpyrrolidone, and hydroxy 0.1g of methyl cellulose, 0.6g of composite crosslinking agent prepared in a 1:1 molar ratio of polyethylene glycol diglycidyl ether and polyethylene glycol 200, 10g of nano-silica, and 2g of antibacterial agent. Among them, the antibacterial agent of this embodiment is amino acid chelated nano silver, and 1g of antibacterial agent is added in the initial reaction crosslinking stage, and 1g of antibacterial agent is added in the surface crosslinking stage, using titanate coupling agent 0.2g, and then press The preparation of the steps:

[0077] 1) After mixing acrylic acid with deionized water, sodium hydroxide is added for neutralization.

[0078] 2) Add polyvinylpyrrolidone and amino acid chelated nano-silver to the reaction system, stir and mix and then ultrasonically sha...

Embodiment 2

[0085] Accurately weigh 200 g of acrylic acid, 80 g of sodium hydroxide, the degree of neutralization of the acrylic acid monomer solution in this example is 72%, deionized water 260 g, N,N'-methylenebisacrylamide 0.2 g, sodium bisulfite 0.1g, ammonium persulfate 0.2g, polyvinylpyrrolidone 8g, sodium pyrophosphate decahydrate 6g, polyethylene glycol diglycidyl ether, pentaerythritol in a 1:1 molar ratio of compound crosslinking agent 8g, nano titanium dioxide 15g, Antibacterial agent 20g. Among them, the antibacterial agent of this embodiment is composed of amino acid nano silver chelate and chitosan nano silver ion chelate in a ratio of 1:1 by mass, and 10g of antibacterial agent is added in the initial reaction crosslinking stage, and the surface is crossed. In the linking stage, 10 g of antibacterial agent was added, and 0.2 g of titanate coupling agent was used. Then, according to the steps of Example 1, a shell-core type antibacterial and deodorizing super absorbent resin ...

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Abstract

The invention provides a bacteriostatic deodorant super absorbent resin. An acrylic acid/acrylate mixed solution is prepared by neutralization of a basic compound and an acrylic monomer solution; a primary crosslinking agent and a primary dispersing agent are added into the mixed solution and uniform stirring is performed; an antibacterial agent is added and uniform stirring is continued; a temperature is raised to a range of 35 DEG C-70 DEG C; an initiator is added for polymerization to form colloid super absorbent resin; granulation and drying are performed on the colloid super absorbent resin in order; a composite bacteriostatic crosslinking agent is added at a temperature in a range of 110-180 DEG C for surface treatment to form the core-shell-type super absorbent resin having a three-dimensional crosslinking network structure. The bacteriostatic agent is one or two selected from a group consisting of an amino acid metal salt ion chelate and a chitosan metal salt ion chelate. The super absorbent resin provided by the invention is applied in sanitation hygroscopic products, has notable bacteriostatic and deodorant properties, has easily available raw materials, has low costs and has huge benefits.

Description

Technical field [0001] The invention belongs to the research field of functional super absorbent resins, and particularly relates to a bacteriostatic and deodorizing super absorbent resin and absorbent products using the bacteriostatic and deodorizing super absorbent resin. Background technique [0002] Super absorbent polymer (SAP) is a general term for high-molecular polymers with high water absorption and water retention properties. In foreign countries, in the early 1950s, the American Goodrich Company developed cross-linked polyacrylic acid resins. Then Russell and others from the Northern Research Center of the US Department of Agriculture began to study the grafting technology of starch and acrylonitrile in 1961; in 1978, Sanyo, Japan Huacheng Company developed and industrialized production of starch grafted polyacrylic acid copolymer type super absorbent resin. In China, the research of super absorbent resin started in the early 1980s. Due to objective factors such as la...

Claims

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Application Information

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IPC IPC(8): C08F220/06C08F222/38C08F2/44C08K5/00C08J3/24C08L33/02C08L1/28C08L5/08C08K9/04C08K9/12C08K3/36C08K3/22C08K9/06A61L15/60A61L15/46A61L15/24A61L15/28A61L15/18A61L15/20
Inventor 洪锡全裴小苏周丕严刘若铎
Owner 浙江卫星新材料科技有限公司
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