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Weeding suspending agent and preparation process thereof

A technology of suspending agent and co-solvent, which is applied in the preparation process of herbicide suspending agent, which can solve the problems of increasing environmental pollution, flammability, safety hazards, etc., and achieves the effect of good weeding effect, small grinding particle size and improved safety

Inactive Publication Date: 2013-01-30
南通嘉禾化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the dosage form of dithiopyr in China is mainly emulsifiable concentrate. At present, a large amount of organic solvents, such as toluene, xylene, and solvent naphtha, are added to the pesticide emulsifiable concentrate preparation. It is very easy for organic solvents to be absorbed and poisoned by the human body. Because the flash point of organic solvents is very low and they are easy to burn, there are great safety hazards in the transportation and storage of products. It is one of the dosage forms that are restricted from development in my country and even in the world.
In addition, during use, most of the chemicals cannot be absorbed by weeds, but are scattered into the farmland, which increases the pollution to the environment and fails to achieve the expected weeding effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of herbicide suspension concentrate, this herbicide suspension concentrate is made up of following weight ratio:

[0019] Dithiopyr 25-45%;

[0020] Water 40-70%;

[0021] Co-solvent 1.5-2.5%;

[0022] Wetting agent 1-3%;

[0023] Dispersant 1.5-3.5%;

[0024] Defoamer 0.5-1%;

[0025] Thickener 1-2%;

[0026] Preservatives 0.5-1%.

[0027] Co-solvent is one or more of ethylene glycol, propylene glycol, glycerin, wetting agent is one or more of methylphenol formaldehyde resin, polyoxyethylene ether, polyether modified organosiloxane, dispersant It is one or more of calcium lignosulfonate, alkylphenol-based polyoxyphosphate, sodium methylene bis-naphthalene sulfonate, and the defoaming agent is organic silicon, polydimethylsiloxane, isooctyl One or more of alcohol, thickener is one or more of urea, magnesium lead silicate, xanthan gum, sodium alginate, one or more of preservatives are sodium benzoate, Cathone, The herbicidal suspension also includes an ant...

Embodiment 2

[0029] Add 32 kg of dithiopyr technical, 54 kg of water, and 3 kg of co-solvent into the batching kettle, stir for 1 hour, and form a slurry. This slurry is transported to the colloid mill for rough grinding for 2 hours, and the coarse abrasive is transported to the sand mill for sand grinding for 3 hours, and the sampling analysis shows that the average particle size is 2.5 microns; the material liquid after sand milling is transported to the blending kettle, Add 1 kg of defoamer, 2 kg of thickener, 3 kg of wetting agent, 3 kg of dispersant, and 1 kg of preservative, stir for 1 hour, and take samples for testing.

Embodiment 3

[0031] Add 35 kg of dithiopyr technical, 50 kg of water, and 2.5 kg of cosolvent into the batching kettle, stir for 1.5 hours, and form a slurry. This slurry is transported to the colloid mill for coarse grinding for 2.5 hours, and the coarse abrasive is transported to the sand mill for sand grinding for 2.5 hours, and the sampling analysis shows that the average particle size is 3 microns; the material liquid after sand grinding is transported to the blending kettle, Add 1.5 kg of defoamer, 2.5 kg of thickener, 2.5 kg of wetting agent, 2.5 kg of dispersant, and 1.5 kg of preservative, stir for 1 hour, and take samples for testing.

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Abstract

The invention discloses a weeding suspending agent. The weeding suspending agent is characterized by comprising the following components in percentage by weight: 25-45 percent of dithiopyr, 40-70 percent of water, 1.5-2.5 percent of cosolvent, 1-3 percent of wetting agent, 1.5-3.5 percent of dispersing agent, 0.5-1 percent of defoaming agent, 1-2 percent of thickening agent and 0.5-1 percent of preservative. The weeding suspending agent has the advantages that water is used as a solvent, so that no dust drifts in application, the grinding particle size is small, which is convenient for plants to absorb, environmental pollution is reduced, and the safety of transportation and storage is improved; and the weeding suspending agent confirms to the requirement of green agricultural production and has the effects of good stability, freeze proofing, anticorrosion and good weeding effect.

Description

technical field [0001] The invention belongs to the technical field of pesticide production, and in particular relates to a herbicide suspension and a preparation process of the herbicide suspension. Background technique [0002] Dithiopyr is a high-efficiency, low-toxic herbicide, mainly used for weeding rice fields and lawns. This product is a pyridine carboxylic acid herbicide. It is safe for rice and can control barnyardgrass, bermudagrass, heterosedge, and Alisma narrow-leaf by pre-emergence application. In the lawn, pre-emergence application of pesticides can control annual grass weeds such as rose crabgrass and purple crabgrass, and annual broad-leaved weeds such as ball-sequence curly ears. [0003] At present, the dosage form of dithiopyr in China is mainly emulsifiable concentrate. At present, a large amount of organic solvents, such as toluene, xylene, and solvent naphtha, are added to the pesticide emulsifiable concentrate preparation. Organic solvents are easi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/40A01N25/04A01P13/00
Inventor 周耀明姜亚君朱贲孝金宽洪
Owner 南通嘉禾化工有限公司
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