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Lufenuron multiple emulsion and preparation method thereof

A lufenuron and emulsion technology, which is applied in the field of pesticide formulations and its preparation, can solve the problems of inflammable, explosive and human and environmental toxicity, damage to human health, environmental pollution, etc., and achieve good biodegradation performance, reduce toxicity, environmental friendly effect

Inactive Publication Date: 2010-04-07
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, lufenuron only has a single dosage form of emulsifiable concentrate
As we all know, emulsifiable concentrate products need to use a large amount of organic solvents, and the liquid preparations using solid technical pesticides often use organic solvents such as aromatic hydrocarbons as the dissolution medium. The main varieties include benzene, toluene, xylene, methanol, etc. These solvents have flash points. Low, flammable and explosive, and high toxicity to humans and the environment, and all of them will enter the environment during the use of pesticides, which will cause serious environmental pollution and damage human health

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The invention provides a lufenuron W / O / W multiple emulsion without aromatic hydrocarbon organic solvents and a preparation method thereof. The composition of the lufenuron W / O / W multiple emulsion comprises: 2% lufenuron ~30%, emulsifier 2%~10%, solvent 2%~25% and water, all above are mass percentages.

[0022] The lufenuron W / O / W multiple emulsion also includes 1% to 5% of cosolvent (antifreezing agent), 3% to 7% of thickener, 0.1% to 0.5% of defoamer and 0.008% of pH regulator %~0.012%, the foregoing are all mass percentages.

[0023] The emulsifier is a mixture of a nonionic surfactant and an anionic surfactant, wherein the nonionic surfactant includes two types with an HLB value less than or equal to 10 and one with an HLB value greater than 10. The nonionic surfactant whose HLB value is less than or equal to 10 can be selected from polyoxyethylene (4) lauryl ether, fatty alcohol glyceride-polysorbate mixture, ten polyglycerol decanoate, sorbitan Optionally at leas...

Embodiment 1

[0037] Make 1000 kg of lufenuron W / O / W multiple emulsion with 2% mass ratio, the raw materials are: 20 kg of lufenuron, 20 kg of polyoxyethylene (4) lauryl ether (HLB value ≤ 10), ethoxylate Alkylated alkyl phosphate (HLB value > 10) 15 kg, polyoxyethylene sorbitan monooleate (HLB value > 10) 10 kg, ethyl acetate 40 kg, N-methylpyrrolidone 20 kg, n-octanol 20 kg, 30 kg of polyvinyl alcohol, 20 kg of cyclodextrin, 2 kg of silicone defoamer, lactic acid (about 0.1 kg, since lactic acid is used as a pH regulator, so the amount is related to the acidity and alkalinity of the water phase, Unable to use accurately before preparing the emulsion, the following examples are the same) and 802.9 kilograms of water.

[0038] Preparation:

[0039] 1) Make the oil phase: mix lufenuron technical, ethyl acetate, N-methylpyrrolidone, polyoxyethylene (4) lauryl ether, and ethoxylated alkyl phosphate in an emulsification reactor, stir to dissolve complete, forming an oil phase;

[0040] 2) Ma...

Embodiment 2

[0044] Make 1000 kg of lufenuron W / O / W multiple emulsion with 2% mass ratio, the raw materials are: 20 kg of lufenuron, 20 kg of sorbitan monooleate (HLB value ≤ 10), alkyl poly Glycol ether phosphate (HLB value > 10) 20 kg, propylene oxide / ethylene oxide block copolymer (HLB value > 10) 20 kg, rosin ethyl ester 30 kg, N-methylpyrrolidone 30 kg , 20 kg of glycerol, 4 kg of xanthan gum, 30 kg of cyclodextrin, 5 kg of silicone defoamer, lactic acid (about 0.1 kg) and 800.9 kg of water.

[0045] Preparation:

[0046] 1) Make the oil phase: mix lufenuron technical substance, ethyl abietate, N-methylpyrrolidone, sorbitan monooleate, and alkyl polyethylene glycol ether phosphate in the emulsification reaction kettle, stir Completely dissolved to form an oil phase;

[0047] 2) Make water phase 1: Mix glycerol, xanthan gum, cyclodextrin and water of the same quality as the oil phase, adjust the pH value to 5.0 with lactic acid to form water phase 1;

[0048] 3) Make water phase 2: ...

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PUM

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Abstract

The invention provides lufenuron multiple emulsion which comprises the following components by mass percent: 2-30% of lufenuron, 2-10% of emulsion, 2-25% of solvent and water. Compared with the prior art, in the invention, the lufenuron multiple emulsion of the invention utilizes water to replace most of the organic solvent in lufenuron missible oil; the used solvent does not contain any aromatic solvent; the used emulsion has favorable biological degradation performance, is more friendly and safe to environment, reduces the toxicity of pesticides, and improves the safety in production and storage and transportation processes.

Description

technical field [0001] The invention relates to a pesticide preparation and a preparation method thereof, in particular to a lufenuron insecticide and a preparation method thereof. Background technique [0002] Lufenuron, an insect growth regulator, chemical name: N-[[[2,5-dichloro-4-(1,1,2,3,3,3-hexafluoropropoxy)phenyl] Amino]carboxyl]-2,6-difluorobenzamide, which belongs to benzoylurea insecticides and acaricides, is an inhibitor of chitin synthesis, and is mainly used to control vegetables, cotton, corn, fruit trees, etc. Lepidoptera larvae, such as controlling beet armyworm, litura, cabbage armyworm, diamondback moth, cotton bollworm, melon silk borer, thrips, rust mite, citrus leafminer, planthopper and other pests, can also be used as a sanitation It can also be used as a medicine to control pests of animals such as cattle. Lufenuron has a unique insecticidal mechanism: it inhibits molt of insects, and has good insecticidal and ovicidal effects. The pests eat the c...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01N25/30A01N47/34A01P7/04A01P7/02
Inventor 王文忠孔建曹明章李谱超李鸥燕
Owner SHENZHEN NOPOSION AGROCHEM
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