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Dinotefuran dispersible oil suspension and preparation method thereof

A technology for dinotefuran and dispersing oil, which is applied in the field of dinotefuran dispersible oil suspension agent and preparation thereof, can solve the problems of large particle size of dinotefuran particles, low efficacy, introduction of mechanical impurities, etc., and achieves fast diffusion speed , high efficacy, reducing the effect of environmental pollution

Active Publication Date: 2019-01-11
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a preparation method of dinotefuran dispersible oil suspension concentrate, which aims to solve the problems of large particle size of dinotefuran in the preparation obtained by the existing preparation process, low drug efficacy, introduction of mechanical impurities, etc. question

Method used

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  • Dinotefuran dispersible oil suspension and preparation method thereof
  • Dinotefuran dispersible oil suspension and preparation method thereof
  • Dinotefuran dispersible oil suspension and preparation method thereof

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preparation example Construction

[0015] A kind of preparation method of dinotefuran dispersible oil suspension concentrate of the present invention comprises:

[0016] a) under heating conditions, dinotefuran, the first emulsifier, dispersant and water are mixed and dissolved to obtain dinotefuran aqueous solution;

[0017] b) mixing the second emulsifier, thickener and oil base to obtain a mixed oil;

[0018] c) Add the dinotefuran aqueous solution in step a) into the mixed oil in step b) under high-speed stirring, and emulsify to obtain a W / O emulsion.

[0019] In the above technical solution, the solubility of dinotefuran in water at 25°C is only 40g / L, and when the water temperature is greater than 60°C, the solubility is greater than 2000g / L. In the embodiments of the present invention, the solubility of dinotefuran in hot water is sharply increased With great characteristics, water is used as a solvent to dissolve dinotefuran, which is green and environmentally friendly, and has high safety in producti...

Embodiment 1

[0063] This embodiment provides a dinotefuran dispersible oil suspension concentrate, the formula of which is shown in Table 1:

[0064] Table 1

[0065]

[0066]

[0067] Its preparation includes the following steps:

[0068] S11. Mix dinotefuran and deionized water, heat to 56° C. under stirring at 1000 rpm, so that dinotefuran is completely dissolved in deionized water; add the first emulsifier and dispersant and continue stirring to obtain dinotefuran aqueous solution;

[0069] S12. Mix the second emulsifier, thickener and oil base, and mechanically stir at 800 rpm until uniform to obtain a mixed oil;

[0070] S13. With high-speed stirring at 10000 rpm, add the dinotefuran aqueous solution in step S11 dropwise at a linear speed of 10 m / min into the mixed oil formulation in step S12 and continue stirring to obtain a dispersible oil suspension containing 5% dinotefuran.

Embodiment 2

[0072] This embodiment provides a dinotefuran dispersible oil suspension concentrate, the formula of which is shown in Table 2:

[0073] Table 2

[0074] component

content

Remark

dinotefuran

5％

first active ingredient

Emamectin benzoate technical drug

1％

second active ingredient

Deionized water

5％

solvent

Fatty alcohol polyoxyethylene ether

8％

first emulsifier

Alkylbenzenesulfonate

3％

Second emulsifier

lignosulfonate

2％

Dispersant

Organic bentonite

1％

thickener

Silica

2％

thickener

Butylated hydroxytoluene

1％

Antioxidants

trimethylbenzene

5％

oil base

methyl oleate

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Oil base

[0075] Its preparation includes the following steps:

[0076] S21. Mix dinotefuran and deionized water, heat to 56° C. under stirring at 500 rpm, so that dinotefuran is completely dissolved in deionized water; add the firs...

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Abstract

The invention belongs to the technical field of processing of pesticide preparations, and concretely relates to a dinotefuran dispersible oil suspension and a preparation method thereof. The preparation method of the dinotefuran dispersible oil suspension comprises the following steps: a) mixing dinotefuran, a first emulsifier, a dispersant and water under a heating condition achieve dissolving inorder to obtain a dinotefuran water aqua; b) uniformly mixing a second emulsifier, a thickener and an oil base to obtain an mixed oil; and c) adding the dinotefuran water aqua obtained in step a) tothe mixed oil obtained in step b) in a high-speed stirring state, and performing emulsification to obtain a W / O emulsion. The dinotefuran is pre-dissolved with water as a solvent, and then is emulsified and dispersed in the oil base to form the W / O emulsion to make the particle size of dinotefuran particles precipitated from liquid drops be a nanometer level, so the dinotefuran dispersible oil suspension has the advantages of good storage stability, fast diffusion speed and high drug effect.

Description

technical field [0001] The invention belongs to the technical field of pesticide preparation processing, and in particular relates to a dinotefuran dispersible oil suspension and a preparation method thereof. Background technique [0002] Dinotefuran, a third-generation nicotinic insecticide developed by Mitsui Chemicals, has a broad spectrum of insecticidal properties and is an stimulant of nicotinic acetylcholine receptors. It affects the synapses of the central nervous system of insects through spinal neurotransmission. Contact and stomach toxicity and has excellent systemic penetration. Dinotefuran is very safe to mammals, birds and aquatic organisms, has no harm to crops, and can control various pests such as Hemiptera, Lepidoptera, Coleoptera, Diptera, Hymenoptera, etc. White-backed planthopper, gray planthopper, night-tailed cicada, etc. have a high control effect. [0003] Dinotefuran belongs to a class of poorly soluble active ingredients. It is not easy to dissol...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01N51/00A01N43/90A01N43/40A01N57/16A01N53/08A01P7/04
CPCA01N25/04A01N43/40A01N43/90A01N51/00A01N53/00A01N57/16
Inventor 吴成林李谱超陈贵兰杨立平
Owner SHENZHEN NOPOSION AGROCHEM
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