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Sustained-release pesticide composition and pesticide preparation and preparation method thereof

A technology for slow-release pesticides and pesticide preparations, applied in the field of pesticides, can solve the problems of flammability, poor photostability of pesticides, and low utilization rate of pesticides, and achieve the effects of slow-release, good photostability, and various preparation methods.

Inactive Publication Date: 2017-05-31
GAUNGXI TIANYUAN BIOCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Chemical pesticides are still the most important means of crop protection, but there are huge defects in the use of chemical pesticides, such as: (1) The commonly used formulations are emulsifiable concentrates, and "triphenyl" solvents are often used, which are volatile, flammable, and flammable. Explosive and poisonous, it remains in farmland soil and water for a long time after pesticide application, is not easy to decompose and metabolize, and pollutes the environment
(2) Most pesticides have poor photostability
However, traditional controlled-release pesticides have large particles, large volume of controlled-release carriers, and sudden release, which lead to low utilization of pesticides.

Method used

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  • Sustained-release pesticide composition and pesticide preparation and preparation method thereof
  • Sustained-release pesticide composition and pesticide preparation and preparation method thereof
  • Sustained-release pesticide composition and pesticide preparation and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Embodiment 1 2% abamectin aqueous solution (the weight ratio of pesticide active ingredient and graphene nanomaterial is 1:1)

[0056] Preparation process: Weigh 20g of abamectin, slowly add 200ml of acetone, and stir at room temperature for 1 hour to obtain a transparent solution of abamectin.

[0057] The above-mentioned Abamectin transparent solution was poured into 1000mL containing 20g nano-graphene oxide aqueous solution, and stirred for 2 days with 500rpm rotating speed in fume hood. After the acetone was fully volatilized, a 2% abamectin aqueous solution was prepared.

[0058] Control agent 1 2% Abamectin EC

[0059] Preparation process: Weigh 20g of abamectin, slowly add it to 200g of acetone solution, then add 30g of emulsifier NP-10 and 20g of emulsifier 33#, make up 1000g of trimethylbenzene, fully stir and mix all components to obtain 2% abamectin Vitamin C cream.

Embodiment 2

[0060] Example 2 4% chlorpyrifos aqueous solution (the weight ratio of pesticide active ingredient and graphene nanomaterial is 2.75:1)

[0061] Preparation process: Weigh 55g of chlorpyrifos, slowly add 300ml of methanol, and stir at room temperature for 1 hour to obtain a transparent solution of chlorpyrifos.

[0062] The above-mentioned chlorpyrifos transparent solution was poured into 1000 mL of an aqueous solution containing 20 g of acetic acid-modified graphene, and stirred at a speed of 500 rpm for 0.5 hour to prepare a 4% chlorpyrifos aqueous solution. The acetic acid modified graphene is prepared by referring to the patent CN101691204B.

[0063] Control drug 2

[0064] The difference with Example 2 is that the graphene modified by acetic acid is removed, and emulsifier NP-10 and 500# are added.

[0065] Preparation method: Weigh 40g of chlorpyrifos, slowly add to 300g of methanol solution to dissolve, then add emulsifier NP-1040g and 500#20g, methanol to make up 100...

Embodiment 3

[0066] Embodiment 3 0.1% emamectin aqueous solution (the weight ratio of pesticide active ingredient and graphene nanomaterial is 1:10)

[0067] Preparation process: Weigh 1 g of emamectin, slowly add 10 ml of dimethylformamide, and stir at room temperature for 1 hour to obtain a transparent emamectin solution.

[0068] The above-mentioned emamectin transparent liquid was poured into 1000mL containing 10g of sulfonated modified graphene oxide aqueous solution, and stirred at a speed of 500rpm in a fume hood for 4 hours to prepare a 0.1% emamectin aqueous solution.

[0069] The sulfonated modified graphene oxide is prepared by referring to the patent CN101691204B "Nano graphene oxide stable under physiological conditions and its preparation method".

[0070] Control drug 3

[0071] The difference from Example 3 is that the sulfonated modified graphene oxide is removed, and emulsifiers NP-10 and 500# are added.

[0072] Preparation method: Weigh 1g emamectin, add 10g dimethylf...

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Abstract

The invention discloses a sustained-release pesticide composition and a pesticide preparation and a preparation method thereof. The sustained-release pesticide composition comprises a graphene nanometer material and pesticide active ingredients, wherein the weight of the pesticide active ingredients is 0.1% to 60% of the total weight of the pesticide preparation, and the remainder includes the graphene nanometer material and a pesticide acceptable carrier. The pesticide preparation provided by the invention adopts graphene and derivatives thereof as pesticide carriers, and the pesticide active ingredients are supported on the surface of the graphene material by physical adsorption, thereby improving the light stability of the pesticide, realizing the effective control of the pesticide release time, and increasing the pesticide loading amount.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and in particular relates to a slow-release pesticide composition and its constituent pesticide preparations, as well as its preparation method and application. Background technique [0002] Chemical pesticides are still the most important means of crop protection, but there are huge defects in the use of chemical pesticides, such as: (1) The commonly used formulations are emulsifiable concentrates, and "triphenyl" solvents are often used, which are volatile, flammable, and flammable. Explosive and poisonous, it remains in farmland soil and water for a long time after pesticide application, and it is not easy to decompose and metabolize, polluting the environment. (2) Most pesticides have poor photostability. Abamectin, in particular, will decompose rapidly through oxidation and photooxidation mechanisms after seeing light. The photodegradation half-life of abamectin in water is only 12h, and...

Claims

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Application Information

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IPC IPC(8): A01N25/08A01N43/90A01N57/16A01N51/00A01N43/56A01N47/38A01N53/08A01N43/54A01N37/26A01P1/00A01P3/00A01P7/04A01P13/00
CPCA01N25/08A01N37/26A01N43/54A01N43/56A01N43/90A01N47/38A01N51/00A01N53/00A01N57/16A01N2300/00
Inventor 张智军张青宋赛杰卢瑞马宇飞
Owner GAUNGXI TIANYUAN BIOCHEM
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