Environment-friendly beta-cypermethrin emulsion in water and preparing method thereof

A high-efficiency cypermethrin and environment-friendly technology, applied in botany equipment and methods, insecticides, biocides, etc., can solve problems such as poor biodegradability, high toxicity of alkylphenols, ecological environment, human and animal health and safety hazards, etc. Achieve the effects of low residue, improved environmental protection, and safe production and use

Inactive Publication Date: 2015-09-23
CHINA RES INST OF DAILY CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the water emulsion processed in our country, a large number of emulsifiers with poor environmental compatibility-such as calcium alkylbenzene sulfonate, alkylphenol ether series, etc., these emulsifiers have poor biodegradability, and the degradation of alkylphenol ether The intermediate product alkylphenol is more toxic, and its continuous use may pose a safety hazard to the ecological environment and human and animal health; the organic solvents used to dissolve the original drug are still mainly toxic and volatile solvents such as toluene and xylene

Method used

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  • Environment-friendly beta-cypermethrin emulsion in water and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] ⑴Add 25g of beta-cypermethrin into the beaker, add 120g of castor oil to it, fully stir to dissolve the original drug completely, then add 15g of fatty alcohol polyoxyethylene ether (AEO 3 ) and 5g alkyl glucoside (APG1214), continue stirring to form a homogeneous oil phase.

[0034] (2) Add 30g of n-butanol, 2g of polyvinylpyrrolidone and 0.5g of oxalic acid into 787.5g of deionized water in sequence, stir well to dissolve, and then add 15g of fatty alcohol polyoxyethylene ether carboxylate (AEC 9 Na), continue stirring to form a homogeneous aqueous phase.

[0035] (3) Turn on the high-shear emulsifier, and slowly add the water phase to the oil phase at a shear rate of 10000r / min. After the water phase is added, continue to shear for 5 minutes to obtain 1000g of 2.5% beta-cypermethrin water emulsion.

Embodiment 2

[0037] (1) Add 25g of beta-cypermethrin into a beaker, add 100g of palm oil to it, stir well to completely dissolve the original drug, then add 20g of castor oil polyoxyethylene ether (EL-10) and 5g of alcohol ether glycoside (AEG) to it, Stirring was continued to form a homogeneous oily phase.

[0038] (2) Add 20g of n-propanol, 3g of sodium carboxymethyl cellulose and 1g of citric acid into 816g of deionized water in turn, stir well to dissolve them, then add 10g of fatty alcohol polyoxyethylene ether phosphate (MAPK) to it, continue Stir to form a homogeneous aqueous phase.

[0039] (3) Turn on the high-shear emulsifier, and slowly add the water phase to the oil phase at a shear rate of 13000r / min. After the water phase is added, continue to shear for 5min to obtain 1000g of 2.5% beta-cypermethrin water emulsion.

Embodiment 3

[0041] (1) Add 50g of beta-cypermethrin into a beaker, add 50g of methyl palmitoleate and 75g of methyl laurate to it, stir fully to dissolve the original drug completely, then add 25g of methyl ricinoleate polyoxyethylene (CAMEE- 10), continue stirring to form a homogeneous oil phase.

[0042] (2) Add 50g of isopropanol, 3g of polyethylene glycol (PEG-400) and 3g of glacial acetic acid into 729g of deionized water in turn, stir well to dissolve, and then add 15g of potassium salt of fatty alcohol polyoxyethylene ether phosphate (MAPK) and 10g fatty acid methyl ester sulfonate (MES), continue stirring to form a homogeneous aqueous phase.

[0043] (3) Turn on the high-shear emulsifier, and slowly add the water phase to the oil phase at a shear rate of 20,000r / min. After the water phase is added, continue to shear for 10 minutes to prepare 1000g of 5% beta-cypermethrin water emulsion.

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Abstract

Environment-friendly beta-cypermethrin emulsion in water is composed of, by mass, 2-10% of beta-cypermethrin, 5-25% of plant source solvent, 2-10% of surface active agent, 1-5% of cosurfactant, 0.1-1% of dispersion stabilizer, 0.05-0.5% of pH modifier, and the balance water. The environment-friendly beta-cypermethrin emulsion in water has the advantages of being stable, environmentally friendly and efficient.

Description

technical field [0001] The invention relates to a pesticide water emulsion, in particular to an environment-friendly beta-cypermethrin water emulsion and a preparation method thereof. Background technique [0002] Pesticide water emulsion is a kind of pesticide dispersion system formed by dispersing the liquid obtained by dissolving water-insoluble original drug in water-immiscible organic solvent through the action of surfactant in water. Compared with the traditional pesticide formulation emulsifiable concentrate, the pesticide emulsion in water replaces a large amount of organic solvents with water, which reduces production costs, reduces environmental pollution, and improves the safety of production, storage, transportation and use. Since the emulsifiable concentrate uses a large amount of toxic and harmful solvents such as toluene and xylene, which has caused serious pollution to the environment, my country has no longer issued the "Certificate of Approval for Pesticide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N53/08A01N25/04A01N25/30A01P7/04
Inventor 杜志平汪传新台秀梅王万绪王国永刘晓英王天壮
Owner CHINA RES INST OF DAILY CHEM IND
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