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Method for preparing potassium- and nitrogen-containing high water-absorbent resin from carboxymethyl potato starch serving as raw material

A technology of potato starch and superabsorbent resin, which is applied in the field of preparation of superabsorbent resin, can solve the problems of complicated production process, low water absorption multiple, low gel strength, etc., and achieve the effect of simplifying the preparation process, increasing soil nutrition and good performance

Active Publication Date: 2011-01-05
广西珅信科技有限公司
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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 potassium- and nitrogen-containing high water-absorbent resin from carboxymethyl potato starch serving as raw material
  • Method for preparing potassium- and nitrogen-containing high water-absorbent resin from carboxymethyl potato starch serving as raw material
  • Method for preparing potassium- and nitrogen-containing high water-absorbent resin from carboxymethyl potato starch serving as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Weigh 6.8g of potassium hydroxide, measure 30.0ml of deionized water, prepare a potassium hydroxide solution, and neutralize 17.5g of acrylic acid from which the polymerization inhibitor has been removed under the conditions of cooling and stirring in an ice-water bath. Weigh 17.5g of acrylamide, dissolve it with 35.0ml of deionized water, stir the dissolved acrylamide solution and 2.5g of carboxymethyl potato starch at room temperature for 1 hour, and mix them evenly. Add neutralized acrylic acid, 80mg potassium persulfate initiator, 1.0mg N,N'-methylenebisacrylamide, heat with stirring, and control the heating rate at the same time to slowly increase the temperature of the water bath to fully carry out the graft copolymerization reaction , when the graft copolymerization started, stop stirring. Thereafter, the temperature was gradually raised, and when the temperature of the boiling water bath was reached, the reaction was continued for 1.5 hours in the tem...

Embodiment 2

[0024]Example 2: Weigh 7.3g of potassium hydroxide and take 30.0ml of deionized water to prepare a potassium hydroxide solution, and neutralize 18.7g of acrylic acid from which the polymerization inhibitor has been removed under the conditions of cooling and stirring in an ice-water bath. Weigh 18.7g of acrylamide, dissolve it with 35.0ml of deionized water, stir the dissolved acrylamide solution and 2.5g of carboxymethyl potato starch at room temperature for 1 hour, and mix them evenly. Add neutralized acrylic acid, 80mg potassium persulfate initiator, 1.0mg N,N'-methylenebisacrylamide, heat with stirring, and control the heating rate at the same time to slowly increase the temperature of the water bath to fully carry out the graft copolymerization reaction , when the graft copolymerization started, stop stirring. Thereafter, the temperature was gradually raised, and when the temperature of the boiling water bath was reached, the reaction was continued for 1.5 hours in the te...

Embodiment 3

[0025] Example 3: Weigh 7.8g of potassium hydroxide, measure 30.0ml of deionized water, prepare a potassium hydroxide solution, and neutralize 20.0g of acrylic acid from which the polymerization inhibitor has been removed under the conditions of cooling and stirring in an ice-water bath. Weigh 20.0 g of acrylamide, dissolve it with 35.0 ml of deionized water, stir the dissolved acrylamide solution and 2.5 g of carboxymethyl potato starch at room temperature for 1 h, and mix them evenly. Add neutralized acrylic acid, 80mg potassium persulfate initiator, 1.0mg N,N'-methylenebisacrylamide, heat with stirring, and control the heating rate at the same time to slowly increase the temperature of the water bath to fully carry out the graft copolymerization reaction , when the graft copolymerization started, stop stirring. Thereafter, the temperature was gradually raised, and when the temperature of the boiling water bath was reached, the reaction was continued for 1.5 hours in the tem...

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Abstract

The invention discloses a method for preparing potassium- and nitrogen-containing high water-absorbent resin from carboxymethyl potato starch serving as a raw material. The product is prepared from the carboxymethyl potato starch serving as the raw material; and the carboxymethyl potato starch is water soluble, so compared with starch serving as the raw material, the carboxymethyl potato starch does not need gelatinization, and the preparation process is greatly simplified. Compared with like products, the high water-absorbent resin prepared by the method has the advantages of high water absorbing and retaining capability and high gel strength, contains potassium and nitrogen necessary for plant growth, and has great effects of resisting drought and keeping seedlings, increasing both production and income, promoting plant growth and the like for the soil in arid regions.

Description

technical field [0001] The present invention relates to the preparation method of superabsorbent resin used in fields such as agriculture, forestry and gardening, desertification control, environmental protection, civil engineering, industrial supplies, daily necessities, etc. The invention discloses a method for preparing a superabsorbent resin with bisacrylamide as the main raw material. 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. It has attractive effects in soil moisture retention and desert control in arid areas. prospect. Now Japan and France have used super absorbent resins in the Middle East and North Africa to implement the plan to turn deserts into oases. The use of superabsorbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00
Inventor 温国华张伟目仁更林波李东芳张思思张媛邢建霞
Owner 广西珅信科技有限公司
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