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Method for preparing super absorbent resin with high potassium content by using carboxymethyl potato starch as raw material

A technology of potato starch and water-absorbing resin, which is applied in the field of preparing super-absorbent resin with high potassium content, can solve the problems of complex production process, low gel strength, and low water absorption multiple, and achieve the goal of simplifying the preparation process, good performance, and increasing income Effect

Inactive Publication Date: 2010-02-03
内蒙古永业生物技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although my country has achieved certain results in the research of superabsorbent resins, compared with foreign countries, there is still a considerable gap, such as low water absorption of resins, poor salt resistance, low gel strength after water absorption, complex production processes, high product cost

Method used

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  • Method for preparing super absorbent resin with high potassium content by using carboxymethyl potato starch as raw material
  • Method for preparing super absorbent resin with high potassium content by using carboxymethyl potato starch as raw material
  • Method for preparing super absorbent resin with high potassium content by using carboxymethyl potato starch as raw material

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Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: Weigh 32.63g Potassium Hydroxide, measure 45.0ml deionized water, prepare Potassium Hydroxide Solution, under the condition of ice-water bath cooling, neutralize 60.0g (57.1ml) with Potassium Hydroxide Solution to remove barrier Polymerized acrylic. Weigh 5.0g carboxymethyl potato starch, measure 15.0ml deionized water, mix evenly under stirring, add 100mg potassium persulfate initiator, 0.5mg N, N'-methylenebisacrylamide and the prepared acrylic acid and Its potassium salt solution was stirred at room temperature for 0.5-1h to make it evenly mixed. Heating under stirring, controlling the heating rate, increasing the temperature of the water bath slowly, so that the graft copolymerization reaction is fully carried out, and stopping stirring when the graft copolymerization starts. Continue to raise the temperature gradually, and when it reaches the boiling water bath, continue heating to make it react within the temperature range for 1-2h, stop nitrogen fl...

Embodiment 2

[0025]Embodiment 2: Weigh 28.03g Potassium Hydroxide, measure 45.0ml deionized water, prepare Potassium Hydroxide Solution, under the condition of ice-water bath cooling, neutralize 60.0g (57.1ml) with Potassium Hydroxide Solution to remove barrier Polymerized acrylic. Weigh 5.0g carboxymethyl potato starch, measure 15.0ml deionized water, mix evenly under stirring, add 100mg potassium persulfate initiator, 0.5mg N, N'-methylenebisacrylamide and the prepared acrylic acid and Its potassium salt solution was stirred at room temperature for 0.5-1h to make it evenly mixed. Heating under stirring, controlling the heating rate, increasing the temperature of the water bath slowly, so that the graft copolymerization reaction is fully carried out, and stopping stirring when the graft copolymerization starts. Continue to raise the temperature gradually, and when it reaches the boiling water bath, continue heating to make it react within the temperature range for 1-2h, stop nitrogen flo...

Embodiment 3

[0026] Embodiment 3: Weigh 45.95g salt of wormwood, measure 45.0ml deionized water, prepare potassium carbonate solution, under the condition of ice-water bath cooling, neutralize 60.0g (57.1ml) with potassium carbonate solution and remove the acrylic acid of polymerization inhibitor . Weigh 5.0g carboxymethyl potato starch, measure 15.0ml deionized water, mix evenly under stirring, add 100mg potassium persulfate, 0.5mg N, N'-methylenebisacrylamide and the prepared acrylic acid and its potassium Salt solution, stirred at room temperature for 0.5-1h to make it evenly mixed. Heating under stirring, while controlling the heating rate, so that the temperature of the water bath rises slowly, so that the graft copolymerization reaction is fully carried out, and the stirring is stopped when the graft copolymerization starts. Afterwards, the temperature was gradually raised, and when it reached the boiling water bath, continue heating to make it react within the temperature range for...

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Abstract

The invention discloses a method for preparing super absorbent resin with high potassium content by using carboxymethyl potato starch as the raw material, which comprises the following main processes:carrying out neutralization reaction between a potassium hydroxide (potassium carbonate) solution and acrylic acid from which polymerization inhibitor is removed under the cooling of ice-water bath;mixing carboxymethyl potato starch with de-ionized water; mixing the prepared acrylic acid and the sylvite solution thereof with the carboxymethyl potato starch solution; adding an evocating agent persulfate and a cross-linking agent N,'- methylene-bisacrylamide; stirring the mixture under room temperature; heating the mixture by water bath to rise the temperature to rise to ensure that the carboxymethyl potato starch and the acrylic acid and the sylvite thereof generate graft copolymerization reaction under the protection of nitrogen; keeping the temperature of the reaction; drying and crashing to obtain the super absorbent resin with high potassium content by using carboxymethyl potato starch as the raw material. Compared with the similar products, the water absorption of the super absorbent resin is greatly enhanced; the super absorbent resin contains higher content of potassium nutrition element and greatly improves the preparation process by not pasting the carboxymethyl potato starch. The super absorbent resin has great effect on the water conservation, the desert control, the plant growth promotion and the like of soil in dry regions.

Description

technical field [0001] The present invention relates to a kind of preparation method of superabsorbent resin used in fields such as agriculture, forestry, animal husbandry, and gardening, especially refers to the preparation of superabsorbent resin with carboxymethyl potato starch, acrylic acid, potassium hydroxide (or potassium carbonate) as main raw materials. Potassium-containing superabsorbent method. Background technique [0002] The excellent water absorption and water retention properties of superabsorbent resin make it widely used in many fields. Adding superabsorbent resin to the soil can change the aggregate structure of the soil, increase the water permeability and air permeability of the soil, and store the added water, which has an attractive role in soil moisture retention and desertification control in arid areas. prospect. The annual demand growth rate of this kind of products is more than 30%. [0003] There are many preparation methods of superabsorbent ...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08K5/20
Inventor 温国华付渊王丽花目仁更
Owner 内蒙古永业生物技术有限责任公司
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