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Dinotefuran suspending agent and preparation method thereof

A technology for dinotefuran and suspoemulsion, which is applied in the field of dinotefuran suspoemulsion and its preparation, can solve the problems of creaming or sanding with large particle size, and achieves the effects of strong permeability, resistance to rainwater erosion, and reduction of dosage

Active Publication Date: 2019-02-15
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a dinotefuran suspoemulsion with simple processing and good storage stability and its preparation method, aiming to solve the problem that the method for preparing the dinotefuran suspoemulsion is prone to creaming or the particle size of the sand mill is too large

Method used

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  • Dinotefuran suspending agent and preparation method thereof
  • Dinotefuran suspending agent and preparation method thereof
  • Dinotefuran suspending agent and preparation method thereof

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preparation example Construction

[0036] On the other hand, the embodiments of the present invention provide a preparation method of dinotefuran suspoemulsion, which includes the following components in the following weight percentages based on the total weight of the dinotefuran suspoemulsion: 5% to 100% of the dinotefuran suspoemulsion 25%; non-aqueous solvent 15% ~ 40%; emulsifier 5% ~ 15%; wetting and dispersing agent 2% ~ 4%; thickener 1% ~ 3%; antifreeze 2% ~ 5%; preservative 0.1 %~0.3%; water balance;

[0037] The content of the formulation components in the dinotefuran suspoemulsion and its preference are as described above, such as, in some embodiments, the dinotefuran suspoemulsion also includes a second active ingredient, and the second active The ingredients account for 5% to 30% of the total weight of the dinotefuran suspoemulsion.

[0038] Specifically, the second active ingredient may be selected from at least one of pyriproxyfen, bifenthrin, lambda-cyhalothrin and chlorpyrifos.

[0039] In so...

Embodiment 1

[0068] A dinotefuran suspoemulsion comprising the components shown in Table 1 below.

[0069] Table 1

[0070]

[0071] The preparation method of described dinotefuran suspoemulsion comprises the following steps:

[0072] According to the components in the above table, weigh the components except 2% xanthan gum mother liquor and water, mix, sand mill and filter to obtain a dispersible oil suspension concentrate with a particle size of 1 μm to 5 μm;

[0073] Add the above dispersible oil suspension to water and keep stirring, or add water to the above dispersible oil suspension and keep stirring to obtain an O / W suspoemulsion;

[0074] Add 2% xanthan gum mother liquor into the above O / W suspoemulsion, and stir evenly to obtain 5% dinotefuran suspoemulsion.

Embodiment 2

[0076] A dinotefuran suspoemulsion comprising the components shown in Table 2 below.

[0077] Table 2

[0078]

[0079] The preparation method of described dinotefuran suspoemulsion comprises the following steps:

[0080] According to the components in the above table, weigh the components except 2% xanthan gum mother liquor and water, mix, sand mill and filter to obtain a dispersible oil suspension concentrate with a particle size of 1 μm to 5 μm;

[0081] Add the above dispersible oil suspension to water and keep stirring, or add water to the above dispersible oil suspension and keep stirring to obtain an O / W suspoemulsion;

[0082] Add 2% xanthan gum mother liquor to the above O / W suspoemulsion, and stir evenly to obtain 10% dinotefuran suspoemulsion.

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Abstract

The invention provides a preparation method of a dinotefuran suspending agent. In terms of total weight of the dinotefuran suspending agent being 100%, the dinotefuran suspending agent is prepared from following components in percentage by weight: 5%-25% of dinotefuran, 15%-40% of a non-aqueous solvent, 5%-15% of an emulsifier, 2%-4% of a wetting dispersant, 1%-3% of a thickening agent, 2%-5% of an antifreezing agent, 0.1%-0.3% of a preservative, 0-0.3% of a pH regulator and the balance of water. The preparation method of the dinotefuran suspending agent comprises steps as follows: dinotefuran, the non-aqueous solvent, the emulsifier, the wetting dispersant, the antifreezing agent and the preservative are mixed and then subjected to sanding treatment, and a dinotefuran dispersible oil suspension is prepared; after the dinotefuran dispersible oil suspension is mixed with water, stirring treatment is continued, and O / W suspended emulsion is obtained; the thickening agent which is hydrated in advance is added to the O / W suspended emulsion and stirred uniformly, and the dinotefuran suspending agent is obtained. The dinotefuran suspending agent prepared with the method has better storage stability and long lasting period, is resistant to rain wash and has high permeability.

Description

technical field [0001] The invention belongs to the technical field of pesticide preparation processing, and in particular relates to a dinotefuran suspoemulsion and a preparation method thereof. Background technique [0002] Dinotefuran is a third-generation neonicotinoid insecticide developed by Mitsui Chemicals. Dinotefuran is a stimulant of nicotinic acetylcholine receptors, which can affect the synapses of insect central nervous system through spinal nerve transmission. advantage. Dinotefuran is very safe to mammals, birds and aquatic organisms, has no phytotoxicity to crops, and can effectively control piercing-sucking mouthparts pests on various crops such as wheat, rice, cotton, vegetables, fruit trees, and tobacco leaves. Dinotefuran has a melting point of 107.5°C, a solubility of 40g / L in water at 25°C, and is hardly soluble in organic solvents such as cyclohexane and xylene. Due to the relatively poor solubility of dinotefuran, dinotefuran is mostly prepared as...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01N51/00A01N43/90A01N43/40A01N53/08A01N57/16A01P7/04
CPCA01N25/04A01N43/40A01N43/90A01N51/00A01N53/00A01N57/16
Inventor 吴成林廖科超黄柯程李谱超
Owner SHENZHEN NOPOSION AGROCHEM
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