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Bacterium resisting type high water absorption resin and preparation method thereof

A super absorbent resin, soluble technology, applied in the field of functional polymer materials, can solve the problems affecting the balance of SAP performance, adverse effects of SAP application performance, inability to effectively inhibit bacterial growth, etc., to improve wettability, improve Liquid absorption speed and liquid flow performance, and the effect of improving the rate of salt water absorption

Active Publication Date: 2014-08-20
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

[0003] Chinese patent CN101531728A proposes a method for preparing superabsorbent resin. Due to the use of a large amount of surfactants in the production process, the indicators of the product have reached the level of similar products on the market, but there are some problems in application performance. Many deficiencies, such as: large reverse osmosis, poor liquid flow performance, etc., have seriously affected the balance of SAP performance; and cannot effectively inhibit the growth of bacteria, and do not have odor control functions
It should be said that the products of these two patents have a certain antibacterial effect, but after use, they will have adverse effects on the application performance of SAP

Method used

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  • Bacterium resisting type high water absorption resin and preparation method thereof
  • Bacterium resisting type high water absorption resin and preparation method thereof

Examples

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Effect test

Embodiment 1

[0042] Add 500g of acrylic acid and 180g of deionized water into a 2000mL four-necked flask with a stirrer, which is equipped with a dropping funnel and a thermometer. Under the condition of external cooling and temperature control lower than 50°C, 600 g of aqueous sodium hydroxide solution with a mass concentration of 32% was added dropwise to the flask with a dropping funnel. After neutralization, add 25g of 2wt% N,N'-bisacrylamide and 1wt% cetyltrimethylammonium chloride solution, mix well, pour the neutralization solution into a 2000mL beaker, and then pass nitrogen gas for 30 Minutes, then heated to 55°C, and quickly added polymerization initiators successively under stirring, that is, 15g each of 10wt% ammonium persulfate solution and 10wt% sodium bisulfite solution, and the reaction was completed after 10min to obtain a polymer, which was kept for half an hour Then take it out. Spray into the granulation aid solution, use a small meat grinder to granulate the obtained ...

Embodiment 2

[0044] Add 500g of acrylic acid and 180g of deionized water into a 2000mL four-necked flask with a stirrer, which is equipped with a dropping funnel and a thermometer. Under the condition of external cooling and temperature control lower than 50°C, 600 g of aqueous sodium hydroxide solution with a mass concentration of 32% was added dropwise to the flask with a dropping funnel. After neutralization, add 2wt% N, N'-bisacrylamide and 0.5wt% octyldimethylallyl ammonium bromide and 0.5wt% dodecyldimethylammonium bromide mixed solution 25g, after mixing evenly, pour the neutralization solution into a 2000mL beaker, then pass nitrogen gas for 30 minutes, then heat to 55°C, and add the polymerization initiator rapidly in turn, that is, 10wt% ammonium persulfate solution and 10wt% 15g of each sodium bisulfite solution, the reaction was completed after 10 minutes to obtain a polymer, which was taken out after half an hour of heat preservation. Spray into the granulation aid solution, ...

Embodiment 3

[0046] Add 500g of acrylic acid and 180g of deionized water into a 2000mL four-necked flask with a stirrer, which is equipped with a dropping funnel and a thermometer. Under the condition of external cooling and temperature control lower than 50°C, 600 g of aqueous sodium hydroxide solution with a mass concentration of 32% was added dropwise to the flask with a dropping funnel. After neutralization, add 50g of 2wt% N,N'-bisacrylamide solution, mix evenly, pour the neutralization solution into a 2000mL beaker, then pass nitrogen gas for 30 minutes, then heat to 55°C, and rapidly Add a polymerization initiator, that is, 15 g each of 10 wt % ammonium persulfate solution and 10 wt % sodium bisulfite solution, and the reaction is completed after 10 min to obtain a polymer, which is taken out after half an hour of heat preservation. Spray 25g of dodecylbenzyltrimethylammonium chloride solution of granulation aid and 1wt%, the colloid obtained is granulated with a small meat grinder,...

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Abstract

The present invention relates to bacterium resisting type high water absorption resin and a preparation method thereof. The resin is a functional polymer material prepared by redox initiation system water solution polymerization method, the resin has a long chain containing allyl structures, a side chain containing carboxylic acid groups and carboxylic acid sodium, and an inner-crosslinking porous network structure, and the internal or external of particles contains a solubilizing quaternary ammonium salt positive ion monomer, an oxidizing agent is sodium persulfate and ammonium persulfate, a reducing agent is sodium sulfite or sodium bisulfite, and a crosslinking agent is N, N '-methylene bis acrylamide or polyethylene glycol diacrylate. The prepared high water absorbent resin has excellent water absorption and water retention properties, high liquid passing performance and high liquid absorption speed, most prominently has good antibacterial properties, and is applicable to the production of adult diapers, sanitary napkins, baby diapers and other water absorption hygiene materials.

Description

technical field [0001] The invention belongs to the field of functional polymer materials, and in particular relates to an antibacterial superabsorbent resin and a preparation method thereof. Background technique [0002] Super absorbent resin (SAP for short) is a new type of functional polymer material developed in recent years. Widely used in absorbent hygienic materials such as adult diapers, sanitary napkins, and baby diapers, anti-drying materials, cable waterproof materials, packaging materials such as food, water-blocking materials for buildings, water-retaining and drought-resistant materials for agriculture and forestry, etc. According to reports, the superabsorbent resin used as health care and cosmetics in the world accounts for more than 80% of the total, especially in incontinence products for elderly care, which puts forward higher requirements for superabsorbent resin. It not only requires It has high water absorption and water retention, and requires certain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F222/38C08F290/06C08L33/02C08K5/19C08J7/00
Inventor 马国林阮玉林
Owner 浙江卫星新材料科技有限公司
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