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Antibacterial high water-absorbent resin and method for preparation thereof

A technology of superabsorbent resin and fat, which is applied in the field of functional polymer materials to achieve the effects of increasing permeability, improving solubility, and increasing water absorption speed

Inactive Publication Date: 2007-01-24
ZHONGKAI UNIV OF AGRI & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Previous patents have proposed methods for preparing superabsorbent resins using different raw materials, such as hydrolyzed products of starch-acrylonitrile graft polymers, neutralized products of starch-acrylic acid graft polymers, saponified vinyl acetate-acrylic acid copolymers, And sodium polyacrylate superabsorbent resin obtained by reverse-phase suspension polymerization, etc., the above method also includes the improvement of resin liquid absorption rate (absorbing water, saline, urine, etc.) and liquid absorption speed, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1200 grams of deionized water in 705 grams of acrylic acid, neutralized with a mass fraction of 34.5% sodium hydroxide solution, and made into an acrylic acid solution with a pH of 6.0; 208 grams of acrylamide and 2.5 grams of N, N'-methylene were added to the solution base bisacrylamide, 4.2 grams of fatty alcohol polyoxyethylene (9) ether and 35.2 grams of hexadecyl allyl dimethyl ammonium chloride, fully stirred until completely dissolved, and cooled to room temperature; Be 24 grams of 10% sodium bisulfite solution and 24 grams of 10% ammonium persulfate solution in mass fraction, move into the stainless steel reactor rapidly after stirring, start reaction at room temperature, along with reaction, temperature rises slowly to At about 100°C, keep the reaction at 80-100°C for 60 minutes, take out the polymer gel, cut into pellets, dry at 110-120°C until the moisture content is less than 5%, crush, and sieve to obtain superabsorbent resin products. Its water absorption ...

Embodiment 2

[0035]Operation is with embodiment 1. 1300 grams of deionized water and 576 grams of acrylic acid were neutralized to pH 6.5; 383 grams of acrylamide, 2.5 grams of N, N'-methylenebisacrylamide, 4.2 grams of fatty alcohol polyoxyethylene (9) ether and ten 45.2 grams of hexaalkylallyl dimethyl ammonium chloride, 24 grams of 10% sodium bisulfite solution and 24 grams of 10% ammonium persulfate solution; start the reaction at room temperature in a stainless steel reactor and keep it at 80-100 ° C Reacted for 50 minutes, the final product water absorption rate (Q 水 )=283g.g -1 , salt absorption rate (Q 盐 )=48.7g.g -1 , pH is 7.1, η=86.8%.

Embodiment 3

[0037] Operation is with embodiment 1. 1,200 grams of deionized water, 705 grams of acrylic acid were neutralized to pH 6.0 with sodium hydroxide; 208 grams of acrylamide, 2.5 grams of N,N'-methylenebisacrylamide, fatty alcohol polyoxyethylene (7) ether were added in sequence 4.2 grams and 27.2 grams of octyl allyl dimethyl ammonium chloride, 24 grams of 10% sodium bisulfite solution and 24 grams of 10% ammonium persulfate solution; start reaction at room temperature in a stainless steel reactor, keep 80 ~ 100 ℃ reaction for 70 minutes, the water absorption of the final product (Q 水 )=585g.g -1 , salt absorption rate (Q 盐 )=68.7g.g -1 , pH is 7.0, η=80.3%.

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PUM

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Abstract

The invention relates to a method for producing a bacteria repellency high hydroscopicity resin, which belongs to a kind of functional polymer materials. The resin is produced by long chain quaternary ammonium salt cationic monomers with the structure of allyl group, acrylic anionic monomers neutralized partly by natrium hydroxydatum and acrylamide non-ionic monomers using the process of redox initiation system aqueous solution polymerization method. The oxidation agent is sodium peroxydisulfate or ammonium peroxodisulfate, reducing agent is sodium sulphite or sodium bisulphate, cross linking agent is N, N'-Methylenebisacrylamide and quaternary ammonium salt assisting solvent is aliphatic alcohol polyoxyethylene ether. The said high hydroscopicity resin has a good water-absorbing and water-holding capacity, high gel strength and chemical stability, and a particularly good bacteria repellency.

Description

technical field [0001] The invention relates to an antibacterial superabsorbent resin and a preparation method thereof, belonging to the field of functional polymer materials. Background technique [0002] Super absorbent resin (SAP for short) is a new type of functional polymer material developed in recent years. Widely used in sanitary materials for women and children, water-swellable sealing materials, packaging materials, building materials, water-retaining and drought-resistant materials in agriculture and forestry, etc. Previous patents have proposed methods for preparing superabsorbent resins using different raw materials, such as hydrolyzed products of starch-acrylonitrile graft polymers, neutralized products of starch-acrylic acid graft polymers, saponified vinyl acetate-acrylic acid copolymers, And the sodium polyacrylate superabsorbent resin etc. that reverse phase suspension polymerization obtains, above-mentioned method also comprises the problems such as the i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/04C08F4/40C08F2/10
Inventor 尹国强崔英德黎新明廖列文梁世强贾振宇
Owner ZHONGKAI UNIV OF AGRI & ENG
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