Pretilachlor-containing aqueous emulsion

A technology of pretilachlor and water emulsion, which is applied in the direction of herbicides, algicides, biocides, biocides, etc., and can solve the problems of poor physical stability of preparations, difficulty in preparing O/W emulsion in water, poor chemical stability, etc. , to achieve high efficacy, non-combustibility and good effect

Inactive Publication Date: 2009-09-16
北京绿色农华作物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to develop pretilachlor into an emulsion in water, the problem of poor physical and chemical stability of the preparation must be solved. The higher the content of the active substance, the more difficult it is to prepare an O / W emulsion in water, and phase inversion is prone to occur

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0039] Put pretilachlor 20%, polyoxyethylene nonylphenol ether 2.0%, calcium dodecylbenzenesulfonate 1.0%, epoxy soybean oil 2.0%, ethylene glycol 4.0%, xylene 5% into the high shear In the mixing and emulsifying machine, the oil phase is formed after mixing evenly. Add 1.0% urea, 0.5% xanthan gum, and deionized water to 100% in the stirred tank, and stir evenly to form the water phase. Under the condition of high-speed shearing, the water phase is gradually added to the oil phase, and mixed under high-speed shearing for 20-40 minutes to obtain 20% pretilachlor water emulsion.

example 2

[0041] Put 25% pretilachlor, 2.0% polyoxyethylene nonylphenol ether, 2.0% castor oil polyoxyethylene ether, 2.0% epoxy soybean oil, and 5% xylene into a high-shear mixing emulsifier, and mix well That is the oil phase. Add 4.0% ethylene glycol, 1.0% urea, 0.5% xanthan gum, 0.5% hydroxymethyl cellulose sodium, and deionized water to 100% in the stirred tank, and stir evenly to form the water phase. Under the condition of high-speed shearing, the water phase is gradually added to the oil phase, and mixed under high-speed shearing for 20-40 minutes to obtain 25% pretilachlor water emulsion.

example 3

[0043] Put 30% pretilachlor, 2.0% styrylphenyl polyoxyethylene ether, 3.0% polyoxyethylene nonylphenol ether, 2.0% epoxy soybean oil, 1.0% epichlorohydrin, and 6% toluene into the high In the shear mixing emulsifier, after mixing evenly, it becomes the oil phase. Add 3.0% of glycerol, 1.0% of polyethylene glycol, 0.5% of xanthan gum, 0.5% of magnesium aluminum silicate, and add deionized water to 100% in the stirred tank, and stir evenly to form the water phase. Under the condition of high-speed shearing, the water phase is gradually added to the oil phase, and mixed under high-speed shearing for 20-40 minutes to obtain a 30% pretilachlor water emulsion.

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PUM

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Abstract

The invention discloses a herbicide as an agricultural chemical, and in particular relates to a pretilachlor-containing aqueous emulsion. The pretilachlor-containing aqueous emulsion for weed control comprises the following components by weight: 5 to 60 percent of pretilachlor, 2 to 10 percent of solubilizer, 2 to 15 percent of surfactant, 4 to 8 percent of antifreeze, 0.5 to 2 percent of thickener, and the balance of water. The pretilachlor-containing aqueous emulsion uses water as a solvent. Under a condition of a weed control effect equal to or better than other formulations, the pretilachlor-containing aqueous emulsion has the advantages of considerable resource conservation, great reduction in environmental pollution, safe production and storage, convenient use, and the like.

Description

technical field [0001] The invention relates to a pesticide herbicide, in particular to a water emulsion containing pretilachlor. technical background [0002] Organic solvents in pesticide emulsifiable concentrates not only cause a waste of petroleum resources and increase production costs, but also pollute the environment and are harmful to pesticide applicators. In some countries, the use of emulsifiable concentrates containing aromatic hydrocarbon solvents has been restricted or banned, which has prompted Pesticide formulations are constantly updated and developed, among which water-based formulation is one of the leading directions for the development of pesticide formulations. [0003] Pesticide water emulsion (emulsion oilin water, EW) is a water-insoluble original drug liquid or a liquid obtained by dissolving the original drug in a water-insoluble organic solvent as a dispersed phase. With the aid of emulsifiers and other auxiliary agents, it is formed by dispersing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N37/22A01P13/00
Inventor 李鹏吴俊玲周晨光李凤明陈义明齐正红吴家全周希贵吕飞
Owner 北京绿色农华作物科技有限公司
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