High performance aqueous emulsion of cypermethrin, and its preparing method

A high-efficiency cypermethrin, water emulsion technology, applied in the fields of botanical equipment and methods, insecticides, biocides, etc., can solve the problems of lax management, poisoning, phytotoxicity, etc., achieve obvious social benefits, reduce the use of agricultural costs, The effect of promoting environmental protection

Inactive Publication Date: 2007-07-25
SHANGHAI NONGLE BIOLOGICAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the market demand for low-toxicity, high-efficiency and environment-friendly pesticides is relatively large, but the supply is small.
[0005] For a long time, all liquid pesticide technical materials and solid technical pharmaceuticals with considerable solubility in organic solvents, whether they are insecticides, acaricides, fungicides or herbicides, are mostly in the form of emulsifiable concentrates. Use, pesticide emulsifiable concentrate has always been an important dosage form of pesticide preparations, but because the emulsifiable concentrate contains a large amount of flammable organic solvents, it has strict requirements on production, storage, transportation, and use. Phytotoxicity
Especially in the long-term use process, a large amount of organic solvents volatilize into the atmosphere, causing serious pollution to the environment, all these problems have caused widespread concern

Method used

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  • High performance aqueous emulsion of cypermethrin, and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Raw material formula:

[0035] Beta-cypermethrin 1kg, solvent xylene or toluene 1kg, emulsifier polyoxyethylene alkylphenol 0.5kg, thickener polyvinyl alcohol or xanthan gum 0.5kg, antifreeze agent ethylene glycol or propylene glycol 0.5kg, defoamer silicone 0.1kg, the remaining water 96.4kg.

[0036] Preparation:

[0037] a. Add the active drug of beta-cypermethrin to the organic solvent xylene or toluene, and keep stirring until the beta-cypermethrin is completely dissolved, and use it as an oil phase for standby;

[0038] b. According to the above formula, add emulsifier, thickener, antifreeze and defoamer into the water in turn under stirring, and keep stirring until it completely dissolves into a uniform liquid, and use it as the water phase for later use;

[0039] c. First add the oil phase to the container of the shearing machine, start stirring, then gradually add the water phase to the oil phase under stirring, the speed is controlled at 1000 rpm, and stir fo...

Embodiment 2

[0041] Raw material formula:

[0042] Beta-cypermethrin 10kg, solvent xylene or toluene 5kg, emulsifier polyoxyethylene alkylarylphenol 8kg, thickener polyvinyl alcohol or xanthan gum 5kg, antifreeze agent ethylene glycol or propylene glycol 5kg, defoamer silicone 0.5kg , Surplus water 66.5kg.

[0043] Preparation:

[0044] a. Add the active drug of beta-cypermethrin to the organic solvent xylene or toluene, and keep stirring until the beta-cypermethrin is completely dissolved, and use it as an oil phase for standby;

[0045] b. According to the above formula, add emulsifier, thickener, antifreeze and defoamer into the water in turn under stirring, and keep stirring until it completely dissolves into a uniform liquid, and use it as the water phase for later use;

[0046] c. First add the oil phase to the container of the shearing machine, start stirring, then gradually add the water phase to the oil phase under stirring, the speed is controlled at 12000 rpm, and stir for 30 ...

Embodiment 3

[0048] Raw material formula:

[0049] Beta-cypermethrin 15kg, solvent xylene and toluene 12kg, emulsifier polyoxyethylene fatty alcohol and sorbitol ester mixture 10kg, thickener polyvinyl alcohol or xanthan gum 7.5kg, antifreeze agent ethylene glycol and propylene glycol 7.5kg, defoaming Agent silicone 0.7kg, balance water 47.3kg.

[0050] Preparation:

[0051] a. Add the active drug of beta-cypermethrin to the organic solvent xylene and toluene, and keep stirring until the beta-cypermethrin is completely dissolved, and use it as an oil phase for standby;

[0052] b. According to the above formula, add dimehypo technical, emulsifier, thickener, antifreeze and defoamer into the water in turn under stirring, and keep stirring until it completely dissolves into a uniform liquid, and use it as the water phase for later use;

[0053] c. First add the oil phase to the container of the shearing machine, start stirring, then gradually add the water phase to the oil phase under stir...

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Abstract

An aqueous emulsion of high-effect cypermethrin is proportionally prepared from high-effect cypermethrin, solvent, emulsifier, thickening agent, anti-freezing agent, defoaming agent and water through preparing oil phase, preparing water phase and mixing while shearing.

Description

technical field [0001] The invention relates to a pesticide and a preparation method thereof, in particular to a method for preventing and controlling vegetable pests such as cabbage caterpillar, diamondback moth, cabbage aphid, fruit tree aphid, leafminer, pear psyllid, borer, cotton bollworm, pink bollworm and the like. Cypermethrin aqueous emulsion and preparation method thereof. Background technique [0002] In recent years, the global pesticide policy has undergone great changes, especially developed countries have very strict restrictions on the use of highly toxic and high residue pesticides, especially after the national ban on the use of highly toxic pesticides in agriculture from January 1, 2007, the domestic market The demand for high-efficiency, low-toxicity and low-residue environmentally-friendly pesticides will increase, while high-toxicity pesticides will be ruthlessly eliminated under the ban. Restricting and further prohibiting the use of highly toxic pest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N53/06A01N25/02A01P7/04
Inventor 冯镇泰
Owner SHANGHAI NONGLE BIOLOGICAL PROD
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