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Aqueous emulsion of anti type cypermethrin, and preparation method

A technology of trans-cypermethrin and water emulsion, which is applied in the directions of biocides, animal repellents, plant growth regulators, etc., can solve the problems that water emulsions occupy a small share, the stability is not very good, and the water emulsions are unstable. Toxicity reduction, avoidance of burning and explosion, effects of drift mitigation

Inactive Publication Date: 2006-12-06
NANJING NO 1 PESTICIDE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oil-water dispersion system of water emulsion has been studied in the development of pesticide formulations as early as the early 19th century. However, water emulsion is an unstable system, because of its poor stability and prone to delamination. So far, it has been used in conventional pesticide formulations. The water emulsion occupies a very small share in the variety

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: 4.5% trans-cypermethrin emulsion in water

[0032] Trans-Cypermethrin 4.5%

[0033] Xylene 10%

[0034] OP-10 Phosphate 8%

[0035] Glycerol 5%

[0036] Polyacrylate 0.1%

[0037] Deionized water to 100%

[0038] When processing water emulsion, it is carried out in an emulsification dispersion tank. Firstly, the weighed trans-cypermethrin and organic solvent are mixed uniformly under mechanical stirring to form an oil phase; Put the ester into the emulsification dispersing tank and start stirring at a speed of 5000 rpm; then put the oil phase into the emulsifying dispersing tank and stir for 35-40 minutes to make it a uniform emulsion.

Embodiment 2

[0039] Embodiment 2: 10% trans-cypermethrin emulsion in water

[0040] Trans-Cypermethrin 10%

[0041] Xylene 8%

[0042] MAP 6%

[0043] Propylene Glycol 5%

[0044] Tap water to 100%

[0045] First, put the weighed trans-cypermethrin, xylene, and Nongru No. 34 into the emulsification dispersion kettle and mix evenly, and start stirring at a speed of 8000 rpm to form an oil phase; after mixing deionized water and propylene glycol, slowly Put it into the emulsification dispersion kettle and stir for about 30 minutes to make it a uniform emulsion.

Embodiment 3

[0046] Embodiment 3: 20% trans-cypermethrin emulsion in water

[0047] Trans-Cypermethrin 20%

[0048] Xylene 20%

[0049] By140 10%

[0050] Isopropanol 5%

[0051] Tap water to 100%

[0052] First, put the weighed trans-cypermethrin, xylene, and By140 into the emulsification dispersion kettle and mix evenly, start stirring at a speed of 2000 rpm to form an oil phase; mix deionized water and propylene glycol and slowly put it into the emulsification Disperse in the kettle and stir for about 35 minutes to make it a uniform emulsion.

[0053] Main technical index of trans-cypermethrin emulsion in water of the present invention:

[0054]

[0055] Trans-cypermethrin aqueous emulsion of the present invention is better to cabbage cabbage caterpillar control effect in the field, and test result is as shown in table 2:

[0056] try

[0057] The invention has good control effect on cabbage caterpillar, and has good quick-acting property, the lasting effect per...

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PUM

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Abstract

An aquatic emulsion of anti-cypermethrin used as a broad-spectrum insecticide without environmental pollution is prepared from anti-cypermethrin, emulsifier EW7504, organic solvent, antifreezing stabilizer and water proportionally.

Description

technical field [0001] What the present invention relates to is a kind of broad-spectrum insecticide, chemical name is: (S)-alpha-cyano-3-phenoxybenzyl (1R, 3S)-3-(2,2-dichlorovinyl )2.2-Dimethylcyclopropanecarboxylate and (R)-α-cyano-3-phenoxybenzyl (1S, 3R)-3-(2,2-dichlorovinyl)-2,2 -Dimethylcyclopropane carboxylate is also known as trans-cypermethrin (beta-cypermethrin) water emulsion and its preparation process. Background technique [0002] Trans-cypermethrin is a widely used pyrethroid insecticide. It is a high-efficiency broad-spectrum insecticide, an insecticide with contact and stomach poisoning effects, and controls many pests. It is particularly effective against Coleoptera and Lepidoptera, and is mainly used to control seedlings and grains. The pests controlled include meadow moth, rice leaf roller, rice stem borer, black-tailed leafhopper, planthopper, stinkbug, cutworm, aphid, corn borer, cotton bollworm, cotton pink bollworm, inchworm, thrips, Whiteflies, f...

Claims

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Application Information

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IPC IPC(8): A01N53/08A01N25/04
Inventor 杨寿海齐武张兰平周典海袁祝庆
Owner NANJING NO 1 PESTICIDE GRP
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