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Suspension emulsion containing atrazine and chloroacetamide pesticide

A technology of chloroacetamide and suspoemulsion, which is applied in the direction of herbicides, algicides, biocides, biocides, etc., can solve the problems of particle size increase, pH value or viscosity can not be kept constant, and ecological and toxicity are not complete. people's satisfaction

Active Publication Date: 2014-05-07
威尔(福建)生物有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the aqueous suspoemulsion is a three-phase mixture, and has both dynamic and thermodynamic instability, it is prone to problems such as pH value or viscosity cannot be kept constant, particle size increases, etc.
Also in some of the surfactants used in known suspoemulsions, such as alkylphenol ethoxylates, which are not entirely satisfactory in terms of ecology and toxicity, alternatives are therefore required

Method used

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  • Suspension emulsion containing atrazine and chloroacetamide pesticide
  • Suspension emulsion containing atrazine and chloroacetamide pesticide
  • Suspension emulsion containing atrazine and chloroacetamide pesticide

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The preparation method of making atrazine into a suspension is as follows: add the weighed original drug atrazine, dispersant, antifreeze, thickener, preservative, and water into a shearing kettle to disperse evenly, and then put it into a sand mill Grind to the required particle size (average particle size less than 3 microns), and finally add defoamer and stir evenly.

[0024] Preparation of suspoemulsion: In the present invention, the oil phase, atrazine suspending agent, stabilizer, preservative, defoamer, and water are sequentially added to the shearing kettle to disperse evenly, and the shearing time is 5-10 minutes (rotating speed is 2950rmp), that is A suspoemulsion is obtained, and the average particle diameter is controlled to be less than 3 microns.

Embodiment 1

[0026] Embodiment 1: 40% atrazine. metolachlor suspoemulsion

[0027] 1.1 Preparation of 50% metolachlor EW

[0028]

[0029] Process: According to the formula given above, add metolachlor first, then add emulsifier fatty alcohol polyoxyethylene polyoxypropylene ether and fatty alcohol polyoxyethylene polyoxypropylene ether sulfonate, antifreeze agent ethylene glycol , to form the oil phase, then slowly add water while stirring, the system gradually thickens, when it reaches the thickest point (that is, the phase inversion point), slow down the stirring speed, and finally make up the remaining water, add silicone defoaming agent, high-shear machine shears for about 0.5 hours (rotational speed is 2950rmp), that is, water emulsion is obtained, and the average particle size is controlled to be less than 3 microns.

[0030] 1.2 Preparation of 50% Atrazine SC

[0031]

[0032] Process: According to the formula given above, add the weighed original drug atrazine, dispersant ...

Embodiment 2

[0039] Embodiment 2: 50% atrazine. metolachlor suspoemulsion

[0040] 2.1 Preparation of 55% metolachlor EW

[0041]

[0042] Process: According to the formula given above, first add metolachlor, then add emulsifier fatty alcohol polyoxyethylene polyoxypropylene ether and fatty alcohol polyoxyethylene polyoxypropylene ether sulfosuccinate, antifreeze agent propylene glycol , to form the oil phase, then slowly add water while stirring, the system gradually thickens, when it reaches the thickest point (that is, the phase inversion point), slow down the stirring speed, and finally make up the remaining water, add silicone defoaming agent, high-shear machine shears for about 0.5 hours (rotational speed is 2950rmp), that is, water emulsion is obtained, and the average particle size is controlled to be less than 3 microns.

[0043] 2.2 Preparation of 50% Atrazine SC

[0044]

[0045]

[0046] Process: According to the formula given above, add the weighed original drug atr...

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Abstract

The invention relates to a suspension emulsion containing atrazine and a chloroacetamide pesticide, which comprises the following components in percentage by weight: 15-30% of atrazine, 10-35% of pesticide B, 0-50% of a cosolvent, 1-15% of an emulsifier, 0.1-6% of a dispersing agent, 1-10% of an antifreeze agent, 0-5% of a thickening agent, 0.1-2% of an antifoaming agent, 0.1-3% of a corrosion remover, 0.01-5% of a stabilizer and the balance of water, wherein the emulsifier is fatty alcohol polyoxyethylene polyoxypropylene ether and a derivative of the fatty alcohol polyoxyethylene polyoxypropylene ether, and the pesticide B is a chloroacetamide weed killer. The suspension emulsion has the following advantages: 1, stability is realized, and the problems that the pH value or the viscosity is not constant, and the particle size is increased are not easy to appear; 2, the components are more environmentally-friendly and safer.

Description

technical field [0001] The invention relates to a herbicidal pesticide composition, in particular to a suspoemulsion containing atrazine and chloroacetamide pesticides. Background technique [0002] Water suspoemulsion is one or several water-insoluble pesticide liquid active ingredients (or a mixture of low melting point pesticide active ingredients in a solvent) and another or several water-insoluble pesticide solid active ingredients, using water as the medium, relying on Surfactants are processed into a stable liquid formulation of a suspoemulsion dispersion. It has the advantages of suspensions and water emulsions, such as avoiding the pollution and poisoning of the environment and operators due to organic solvents and dusts of pesticide emulsifiable concentrates and wettable powders, safe storage and transportation, and high biological activity. Since aqueous suspoemulsion is a three-phase mixture, and has both kinetic and thermodynamic instability, it is prone to pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N43/70A01P13/00A01N37/26A01N37/22
Inventor 倪素美王兴全齐文刚范鸿华张建冬
Owner 威尔(福建)生物有限公司