Polymerization device for preparing spherical water-absorbent resin and method of using same to prepare spherical water-absorbent resin

A technology of water-absorbent resin and polymerization device, which is applied in the field of preparing spherical water-absorbent resin, which can solve the problems of unfavorable industrial production, increased resin particle size factors, and increased synthesis steps, etc., and achieves the effects of simple equipment, shortened reaction time, and uniform size

Inactive Publication Date: 2013-10-23
SHANGHAI CHUANGSHI MEDICAL TECH (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method increases the synthesis steps and increases the factors affecting the particle size of the resin, which is not conducive to industrial production.

Method used

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  • Polymerization device for preparing spherical water-absorbent resin and method of using same to prepare spherical water-absorbent resin
  • Polymerization device for preparing spherical water-absorbent resin and method of using same to prepare spherical water-absorbent resin
  • Polymerization device for preparing spherical water-absorbent resin and method of using same to prepare spherical water-absorbent resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation method of the spherical water-absorbent resin in this embodiment comprises the following steps:

[0041] Step 1, the preparation of aqueous phase solution:

[0042] Add 13.2g of NaOH to 29.2g of water, stir to make it completely dissolve and cool down. After the NaOH solution drops to room temperature, add this solution to 22.2g of methacrylic acid monomer, and stir and cool it. When the temperature is below 25°C, add 10.3g of acrylamide, stir to dissolve, and adjust the pH to 6.5-7.2;

[0043]Then add 0.1~0.2g of cross-linking agent N,N-methylenebisacrylamide, stir rapidly until it is completely dissolved, then add 0.08~0.1g of azobispropaneamine hydrochloride under the condition of rapid stirring, keep The temperature of the system is around 10°C to obtain an aqueous phase solution; the density of the aqueous phase solution is 1.02g / cm 3 .

[0044] Step 2, preparing spherical water-absorbing resin:

[0045] Put the methyl silicone oil (viscosity 20...

Embodiment 2

[0048] The preparation method of the spherical water-absorbent resin in this embodiment comprises the following steps:

[0049] Step 1, the preparation of aqueous phase solution;

[0050] Add 19.3g of KOH to 23.2g of water, stir to make it completely dissolve and cool down. After the KOH solution drops to room temperature, add this solution to 29.2g of butyl methacrylate monomer, and stir and cool. After cooling to below 25°C, add 15.5g of acrylamide, stir to dissolve and then adjust the pH within the range of 6.5 to 7.2;

[0051] Then add 0.1~0.2g of cross-linking agent N,N-methylenebisacrylamide, stir rapidly until it is completely dissolved, then add 0.08~0.1g of 2,2-azobis(2-amidine Azoline propane) hydrochloride, keep the system temperature at about 10°C; the density of the aqueous phase solution is 1.0g / cm 3 ;

[0052] Step 2, preparing spherical water-absorbing resin:

[0053] Put the methyl silicone oil (viscosity 1500cp) solution in the polymerization reaction col...

Embodiment 3

[0056] The preparation method of the spherical water-absorbent resin in this embodiment comprises the following steps:

[0057] Step 1, the preparation of aqueous phase solution;

[0058] Add 21.5g of NaOH to 26.2g of water, stir to make it completely dissolve and cool down. After the NaOH solution drops to room temperature, add this solution to 30.2g of methacrylic acid monomer, and stir and cool it. When the temperature is below 25°C, add 5.6g of acrylamide to adjust the pH within the range of 6.5 to 7.2;

[0059] Then add 0.05-0.1 g of cross-linking agent divinylbenzene, stir rapidly until it is completely dissolved, then add 0.08-0.1 g of potassium persulfate under the condition of rapid stirring, and keep the temperature of the system at about 10°C; the aqueous phase solution The density is 1.05g / cm 3 ;

[0060] Step 2, preparing spherical water-absorbing resin:

[0061] Put the methyl silicone oil (viscosity 1500cp) solution in the polymerization reaction column, hea...

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Abstract

The invention relates to a polymerization device for preparing spherical water-absorbent resin and a method of using the same to prepare spherical water-absorbent resin. The polymerization device comprises a granulation device and a polymerization column. The granulation device comprises a cavity body, a water-circulation cooling interlayer, a water-circulation water inlet, a water-circulation water outlet, and a water dropper. The polymerization column comprises an outmost heat-insulation layer, a heating layer, a reaction column, a product collecting valve, a heat conduction oil inlet valve, a heat conduction oil outlet valve, an oil phase solution outlet valve, an oil phase solution filling opening, and a oil phase solution overflow opening. The preparation method of spherical water-absorbent resin comprises step of adding water phase solution in the oil phase solution in the polymerization column drop by drop through the granulation device to obtain the spherical water-absorbent resin. The spherical water-absorbent resin prepared by the method is in ball shape of the same size, and the diameters of the balls are between 1 and 20 mm. The preparation method has the advantages of simple method and equipment, large reduction on reaction time, and high yield.

Description

technical field [0001] The present invention relates to a polymer production equipment, in particular, the present invention relates to a polymerization device for preparing spherical water-absorbing resin and a method for preparing spherical water-absorbing resin using the same. Background technique [0002] Super absorbent resin (SAP for short) is a new type of functional polymer material that has been extensively researched and developed at home and abroad. At present, countries all over the world have carried out a lot of research work on superabsorbent resin, and have made great progress in its varieties, manufacturing methods, performance and application fields. Developed countries such as the United States, Japan, Germany, and France have been at the forefront. Although the research and development of SAP in my country started relatively late, it has developed very rapidly. [0003] Superabsorbent resin polymerization methods include solution method, inverse suspensi...

Claims

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Application Information

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IPC IPC(8): C08F220/06C08F220/56C08F220/18C08F212/36C08F222/38C08F2/32C08F2/01
Inventor 范立涛尤勇张金俊
Owner SHANGHAI CHUANGSHI MEDICAL TECH (GRP) CO LTD
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