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Spirodiclofen multiple emulsion and preparation method thereof

A spirodiclofen and emulsion technology, which is applied in the field of pesticide formulations and their preparation, can solve the problems of inflammable and explosive human and environmental toxicity, environmental pollution, damage to human health, etc., and achieves good biodegradation performance, environmental friendliness, and reduced toxic effects

Active 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, in the liquid preparations using the solid technical pesticides, it is generally necessary to use organic solvents such as aromatic hydrocarbons as the dissolution medium for the solid technical. The main varieties are benzene, toluene, xylene, methanol, etc. These solvents have low flash points. , flammable and explosive, and high toxicity to people 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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  • Spirodiclofen multiple emulsion and preparation method thereof

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[0021] The invention provides a spirodiclofen W / O / W multiple emulsion that does not contain an aromatic hydrocarbon organic solvent and a preparation method thereof. The composition of the spirodiclofen W / O / W multiple emulsion is: spirodiclofen 5% ~30%, emulsifier 2%~12%, solvent 10%~30%, cosolvent (antifreeze) 1%~5%, thickener 1%~5%, defoamer 0.1%~0.5%, 0.004% to 0.006% of the PH regulator, and the balance is water, all of which are percentages by mass.

[0022] 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 least one in anhydrous oleic acid ester, sorbitan trioleate, sorbitan monooleate; The ...

Embodiment 1

[0036] Make 1000 kilograms of 24% mass ratio of spirodiclofen W / O / W multiple emulsion, its raw materials are: 240 kilograms of spirodiclofen, 50 kilograms 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) 30 kg, α-pinene 80 kg, D-limonene 180 kg, iso 20 kg of octanol, 30 kg of polyvinyl alcohol, 10 kg of cyclodextrin, 2 kg of silicone defoamer, acetic acid (about 0.05 kg, because acetic acid is used as a pH regulator, so the amount depends on the acidity and alkalinity of the water phase Relevant, can't accurately consume before preparing multiple emulsions, the following examples are the same) and 338 kilograms of water.

[0037] Preparation:

[0038] 1) Making the oil phase: Mix spirodiclofen, α-pinene, D-limonene, sorbitan monooleate, and alkyl polyethylene glycol ether phosphate in an emulsification reaction kettle, and stir to dissolve completely , forming an o...

Embodiment 2

[0058] Make 1000 kilograms of 24% mass ratio of spirodiclofen W / O / W multiple emulsion, its raw materials are: 240 kilograms of spirodiclofen, 50 kilograms of polyoxyethylene (4) lauryl ether (HLB value≤10), ethoxylate Alkylated alkyl phosphate (HLB value > 10) 20 kg, polyoxyethylene sorbitan monooleate (HLB value > 10) 20 kg, D-limonene 150 kg, abietic acid methyl ester 100 kg, n-butyl 20 kg of alcohol, 2 kg of xanthan gum, 10 kg of cyclodextrin, 3 kg of silicone defoamer, 385 kg of acetic acid (about 0.05 kg) and water.

[0059] Preparation:

[0060] 1) Making the oil phase: Mix spirodiclofen, D-limonene, methyl abietate, polyoxyethylene (4) lauryl ether, and ethoxylated alkyl phosphate in an emulsification reaction kettle, and stir to dissolve completely , forming an oil phase;

[0061] 2) Prepare water phase 1: mix n-butanol, xanthan gum, cyclodextrin and water of the same quality as the oil phase, and adjust the pH value to 3.5 with acetic acid to form water phase 1;

...

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Abstract

The invention provides spirodiclofen multiple emulsion which comprises the following components by mass percent: 5-30% of spirodiclofen, 2-12% of emulsifying agent, 10-30% of solvent and water. Compared with the prior art, in the invention, the spirodiclofen multiple emulsion of the invention utilizes plant source solvent with a high flash point to replace aromatic organic solvent in the spirodiclofen preparation; 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 spirodiclofen insecticide and acaricide and a preparation method thereof. Background technique [0002] Spirodiclofen, also known as quaternary ketone acarid, and its common name in English is Spirodiclofen, is a new type of quaternary acid acaricide. It has a significant effect on mite eggs, and also has good contact activity on juvenile nymphs. Although the contact effect on female adult mites is not good, most of the eggs laid by female adult mites cannot hatch and die in the late embryonic stage. Spirodifen is a high-efficiency non-systemic foliar treatment acaricide with good control effect and excellent persistence, especially suitable for the control of harmful mites that are resistant to existing acaricides. [0003] However, at present, in the liquid preparations using solid technical pesticides, it is generally necessary to use organic solve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/12A01N25/04A01N25/30A01P7/02
Inventor 王文忠孔建曹明章李谱超李鸥燕
Owner SHENZHEN NOPOSION AGROCHEM
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