Pesticide nano-microsphere and production method thereof

A production method and technology of nano-microspheres, which are applied in the fields of botanical equipment and methods, biocides, plant growth regulators, etc., can solve the problems of easy decomposition, reduction of effective utilization rate, loss of activity, etc.

Active Publication Date: 2017-05-10
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, emamectin benzoate and abamectin are very sensitive to ultraviolet light, and they are easily decomposed and lose their activity under long-term sunlight in the field, thereby reducing their effective utilization

Method used

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  • Pesticide nano-microsphere and production method thereof
  • Pesticide nano-microsphere and production method thereof
  • Pesticide nano-microsphere and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] Embodiment 1: Production of pesticide nano microspheres

[0109] The implementation steps of this embodiment are as follows:

[0110] A. Preparation of styrene-methacrylic acid polymer

[0111] According to the weight ratio of styrene, methacrylic acid and chloroform 1:0.1:5, styrene and methacrylic acid are dissolved in chloroform solvent to obtain a kind of chloroform solution, then according to the ratio of styrene and azobisisobutyronitrile initiator Weight ratio 1:0.02, add azobisisobutyronitrile initiator to the chloroform solution, mix well, then carry out polymerization reaction at 68°C for 12 hours, cool the polymerization reaction solution to room temperature, and remove it by solvent evaporation method Chloroform solvent, obtains styrene-methacrylic acid polymer;

[0112] B. Preparation of primary emulsion

[0113] Sodium dodecylbenzenesulfonate is dissolved in water to obtain a concentration of 0.3% sodium dodecylbenzenesulfonate aqueous solution by weigh...

Embodiment 2

[0119] Embodiment 2: Production of pesticide nano microspheres

[0120] The implementation steps of this embodiment are as follows:

[0121] A. According to the weight ratio of styrene, methacrylic acid and chloroform 1:0.1:15, dissolve styrene and methacrylic acid in chloroform solvent to obtain a chloroform solution, and then trigger the reaction according to styrene and azobisisobutyronitrile The weight ratio of the agent is 1:0.02, add the azobisisobutyronitrile initiator to the chloroform solution, mix well, then carry out the polymerization reaction at a temperature of 68 ° C for 12 hours, cool the polymerization reaction solution to room temperature, and use solvent volatilization The chloroform solvent was removed by method to obtain styrene-methacrylic acid polymer;

[0122] B. Preparation of primary emulsion

[0123] Sodium dodecylbenzenesulfonate is dissolved in water to obtain a concentration of 0.3% sodium dodecylbenzenesulfonate aqueous solution by weight;

[...

Embodiment 3

[0129] Embodiment 3: Production of pesticide nano microspheres

[0130] The implementation steps of this embodiment are as follows:

[0131] A. Preparation of styrene-methacrylic acid polymer

[0132] According to the weight ratio of styrene, methacrylic acid and chloroform 1:0.2:10, styrene and methacrylic acid are dissolved in chloroform solvent to obtain a kind of chloroform solution, then according to the ratio of styrene and azobisisobutyronitrile initiator The weight ratio is 1:0.03, add azobisisobutyronitrile initiator to the chloroform solution, mix well, then carry out polymerization reaction at a temperature of 70°C for 10h, cool to room temperature, and remove the chloroform solvent by solvent volatilization method to obtain Styrene-methacrylic acid polymer;

[0133] B. Preparation of primary emulsion

[0134] Sodium dodecylbenzenesulfonate is dissolved in water to obtain a concentration of 0.4% sodium dodecylbenzenesulfonate aqueous solution by weight;

[0135]...

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Abstract

The invention relates to a pesticide nano-microsphere and a production method thereof. The production method includes the steps: preparing phenyl ethylene-methacrylic acid polymers; preparing initial emulsion; preparing the nano-microsphere and the like. The average grain diameter of the pesticide nano-microsphere is about 100nm, the drug-loading rate of the pesticide nano-microsphere reaches 9% or more, and the entrapment rate of the pesticide nano-microsphere reaches 80% or more. Compared with difficultly soluble pesticides without being treated by nano-microsphere, light stability of the pesticide nano-microsphere is obviously improved, release of emamectin benzoate nano-microsphere tends to balance after 200 hours and reaches 94%, and release of emamectin nano-microsphere tends to balance after 100h and reaches 63%. The pesticide nano-microsphere is simple in production process, low in production cost and device investment cost and stable and reliable in product quality, and pollutants are avoided. The production method of the pesticide nano-microsphere has a wide application prospect.

Description

[0001] 【Technical field】 [0002] The invention belongs to the field of pesticides and insecticides. More specifically, the present invention relates to a pesticide nanosphere, and also relates to a production method of the pesticide nanosphere. [0003] 【Background technique】 [0004] Pesticides are an important basis for ensuring national food production and sustainable growth of agricultural products. The active ingredients of existing pesticides are generally highly active and insoluble in water organic compounds. Usually, auxiliary ingredients such as organic solvents, emulsifiers, dispersants and wetting agents must be added to formulate a dosage form before they can be used in the field. Common pesticide formulations are wettable powders and emulsifiable concentrates. Wettable powder carriers are mainly inorganic carriers, which are easy to float and scatter into the environment. Organic solvents such as toluene and xylene are usually added to the emulsifiable concent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01N53/08A01N25/10A01N25/04A01N25/28A01P7/04
CPCA01N25/04A01N25/10A01N25/28A01N43/90A01N53/00A01N2300/00
Inventor 曾章华梁洁崔海信
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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