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Slow-release weeding and sterilizing double-effect pesticide and preparation method thereof

A slow-release, pesticide technology, applied to herbicides and algicides, botanical equipment and methods, fungicides, etc., to achieve high application value, strong interaction, and simple and easy preparation methods

Active Publication Date: 2020-01-10
ZIBO VOCATIONAL INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no published literature and patents on the co-intercalation of hydrotalcite with dimethyltetrachlorate and hymexazol at home and abroad.

Method used

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  • Slow-release weeding and sterilizing double-effect pesticide and preparation method thereof
  • Slow-release weeding and sterilizing double-effect pesticide and preparation method thereof
  • Slow-release weeding and sterilizing double-effect pesticide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Weigh 17.8g Zn(NO 3 ) 2 ﹒ 6H 2 O, 11.3g Al(NO 3 ) 3 ﹒ 9H 2 O dissolved in 100ml to remove CO 2 Mixed salt solution was prepared with water, another 5.6g NaOH was dissolved in 50ml to remove CO 2 Prepare alkaline solution in water, N at room temperature 2 Protection Use the double-drop method to add the salt solution and the alkali solution into the four-neck flask, and stir vigorously. Adjust the pH value to 7 with 0.1mol / L NaOH solution. The resulting slurry was crystallized at 60°C for 72 hours, and the product was placed in a centrifuge, centrifuged at a speed of 2500 rpm for 5 minutes, and then used to remove CO 2 Wash with water until neutral; take out the sample and dry it at 50°C for 48 hours for characterization, and obtain the hydrotalcite precursor ZnAl-NO 3 -LDHs, whose Zn 2+ / Al 3+ =2.

[0040] (2) 8.6g sodium tetrachloride [CH 3 (Cl)C 6 h 3 OCH 2 COONa] solid dissolved in 200mL to remove CO 2 After the deionized water was transferred ...

Embodiment 2

[0045] (1) Weigh 15.4g Mg(NO 3 ) 2 ﹒ 6H 2 O, 11.3g Al(NO 3 ) 3 ﹒ 9H 2 O dissolved in 100ml to remove CO 2 Mixed salt solution was prepared with water, another 2.0g NaOH was dissolved in 50ml to remove CO 2 Prepare alkaline solution in water, N at room temperature 2 The salt solution and the alkali solution were added into the four-necked bottle by the double drop method, and the pH value was adjusted to 10 with 5mol / L NaOH solution after the drop. Centrifuge at rpm for 3 min, then remove CO 2 Wash with water until neutral; take out a small amount of samples and dry them at 90°C for 20 hours for characterization to obtain the hydrotalcite precursor MgAl-NO 3 -LDHs, their Mg 2+ / Al 3+ =2.

[0046] (2) 8.6g sodium tetrachloride [CH 3 (Cl)C 6 h 3 OCH 2 COONa] solid dissolved in 200mL to remove CO 2 After the deionized water was transferred to the four-necked bottle, then add 10g of hydrotalcite precursor MgAl-NO 3 -LDHs,N 2 Protected and heated to 70°C, reacted...

Embodiment 3

[0051] (1) Weigh 17.4g Ni(NO 3 ) 2 ﹒ 6H 2 O, 11.3g Al(NO 3 ) 3 ﹒ 9H 2 O dissolved in 100ml to remove CO 2 Mixed salt solution was prepared with water, another 5.6g NaOH was dissolved in 50ml to remove CO 2 Prepare alkaline solution in water, N at room temperature 2 Protection Use the double-drop method to add the salt solution and the alkali solution into the four-neck flask, and stir vigorously. Adjust the pH value to 7 with 3.0mol / L NaOH solution. The resulting slurry was crystallized at 80°C for 30 h, and the product was placed in a centrifuge, centrifuged at a speed of 3000 rpm for 4 min, and then used to remove CO 2 Wash with water until neutral; take out the sample and dry it at 50°C for 48 hours for characterization, and obtain the hydrotalcite precursor NiAl-NO 3 -LDHs, whose Ni 2+ / Al 3+ =2.

[0052] (2) 8.6g sodium tetrachloride [CH 3 (Cl)C 6 h 3 OCH 2 COONa] solid dissolved in 200mL to remove CO 2 The deionized water was transferred to a four-neck...

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Abstract

The invention relates to the field of organic-inorganic composite materials, and in particular relates to a slow-release weeding and sterilizing double-effect pesticide and a preparation method thereof. The preparation method comprises the following steps: intercalating MCPA-(2-Methyl-4-chlorophenoxyacetic acid radical) into a hydrotalcite precursor, intercalating hymexazol into the hydrotalcite precursor, and finally treating the hydrotalcite precursor in a mixed solution containing hydrogen peroxide, isopropanol and water to obtain a slow-release weeding and sterilizing double-effect pesticide; the chemical formula is: [(M<2 +>) 1-x (M<3 +>) x (OH) 2) x +( MCPA-)x (hym) y.mH2O, wherein x = 0.25-0.33, y = 0.12-0.20, m = 3-6, m is the number of interlayer crystalline water molecules, M<2 +> is a divalent metal ion, M<3 +> is a trivalent metal ion, MCPA-is 2-Methyl-4-chlorophenoxyacetic acid radical, and hym is hymexazol. The slow-release weeding and sterilizing double-effect pesticideof the invention has stable intercalation structure, can release the MCPA-and hymexazol for a long time, and plays a slow-release effect.

Description

technical field [0001] The invention relates to the field of organic-inorganic composite materials, in particular to a slow-release herbicidal and bactericidal double-effect pesticide and a preparation method thereof. Background technique [0002] Pesticide is a kind of medicine used to kill diseases and insect pests to ensure the growth of crops. At present, there are hundreds of varieties of pesticides, which play an irreplaceable role in global agricultural production. According to the research of the Food and Agriculture Organization of the United Nations, the global use of pesticides can reduce the economic loss of about 30% of crops every year. However, traditional pesticides are generally affected by environmental factors such as leaching, evaporation, and degradation, as well as unreasonable human application factors. Their actual utilization rate is only 25%, and most of the pesticides are lost with water. This will not only cause huge economic losses, but the res...

Claims

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Application Information

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IPC IPC(8): A01N25/08A01N25/22A01N39/04A01N43/80A01P13/00A01P3/00
CPCA01N25/08A01N25/22A01N39/04A01N43/80
Inventor 刘晓磊井惠
Owner ZIBO VOCATIONAL INST
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