Micro-capsule suspending agent containing thiamethoxam and carbosulfan and preparation method of micro-capsule suspending agent

A technology of microcapsule suspension and thiamethoxam, which is applied in the field of crop insecticide, can solve the problems of low suspension rate, achieve high suspension rate, reduce contact toxicity and odor, and slow down the hydrolysis rate

Inactive Publication Date: 2015-06-03
ZHEJIANG TIANYI AGRI CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the preparation of a microcapsule suspension containing active ingredients thiamethoxam and / or carbosulfan has the technical problem of low suspension rate under the condition that the active ingredients can be put into the field.

Method used

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  • Micro-capsule suspending agent containing thiamethoxam and carbosulfan and preparation method of micro-capsule suspending agent
  • Micro-capsule suspending agent containing thiamethoxam and carbosulfan and preparation method of micro-capsule suspending agent
  • Micro-capsule suspending agent containing thiamethoxam and carbosulfan and preparation method of micro-capsule suspending agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1. 10% Thiamethoxam Carbosulfan microcapsule suspension

[0053] Preparation:

[0054] Step 1: Preparation of oil phase: Dissolve 9% carbosulfan, 1% thiamethoxam, and 7% urea-formaldehyde resin in 5% xylene, and add 10% calcium dodecylbenzenesulfonate to prepare oil Mutually;

[0055] Step 2: Preparation of the water phase: add 5% lignosulfonate, 10% silicone defoamer, 1% xanthan gum, and 10% rhodamine B to 42% water, transfer to a stirring tank and stir to form Homogeneous;

[0056] Step 3: Preparation of emulsion: under the high-speed stirring of the mixer, the stirring speed of the mixer is greater than 2000r / min, slowly add the oil phase to the water phase to form an emulsion, until the addition is completed, use a homogenizer to cut the emulsion Form oil-in-water emulsion particles, so that the particle size D90 of the emulsion particles is less than 10 microns;

[0057] Step 4: Forming of the capsule skin material: heat the emulsion to 70°C, and stir f...

Embodiment 2

[0058] Example 2. 12% Thiamethoxam Carbosulfan microcapsule suspension (no synergist)

[0059] Preparation:

[0060] Step 1: Preparation of the oil phase: Dissolving 10% carbosulfan, 2% thiamethoxam, and 5% melamine-formaldehyde resin in 8% methanol, and adding 15% sodium polyacrylate to prepare the oil phase;

[0061] Step 2: Preparation of the water phase: Add 10% sodium methylene bis-naphthalene sulfonate, 5% polyether defoamer, and 0.5% hypromellose to 44.5% water, transfer to a stirring tank and stir to form a homogeneous phase;

[0062] Step 3: Preparation of emulsion: under the high-speed stirring of the mixer, the stirring speed of the mixer is greater than 2000r / min, slowly add the oil phase to the water phase to form an emulsion, until the addition is completed, use a homogenizer to cut the emulsion Form oil-in-water emulsion particles, so that the particle size D90 of the emulsion particles is less than 10 microns;

[0063] Step 4: Forming of the capsule skin mate...

Embodiment 3

[0064] Example 3. 13% Thiamethoxam Carbosulfan microcapsule suspension

[0065] Preparation:

[0066] Step 1: Preparation of oil phase: dissolve 10% carbosulfan, 3% thiamethoxam, 3% glycerin, 4% toluene diacetonitrile in 9% benzene, and add 3% polyethylene glycol mono Stearate is formulated into an oil phase;

[0067] Step 2: Preparation of the water phase: 3% modified naphthalene sulfonate, 3% silicone defoamer, 2% pine ester-based vegetable oil, 0.05% xanthan gum, 1% magnesium aluminum silicate, 5% salt Add rhodamine B to 53.95% water, transfer to a stirring tank and stir to form a homogeneous phase;

[0068] Step 3: Preparation of emulsion: under the high-speed stirring of the mixer, the stirring speed of the mixer is greater than 2000r / min, slowly add the oil phase to the water phase to form an emulsion, until the addition is completed, use a homogenizer to cut the emulsion Form oil-in-water emulsion particles, so that the particle size D90 of the emulsion particles is ...

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Abstract

The invention relates to the technical field of crop pesticides, in particular to a micro-capsule suspending agent containing thiamethoxam and carbosulfan and a preparation method of the micro-capsule suspending agent. The micro-capsule suspending agent comprises an effective component and an auxiliary material, wherein the effective component comprises the following raw materials in percentage by weight: 1%-20% of thiamethoxam and 5%-30% of carbosulfan; the auxiliary material comprises the following raw materials in percentage by weight: 5%-30% of a capsule wall material, 5%-20% of a solvent, 0-3% of a synergist, 1%-15% of an emulsifier, 0.5%-10% of a suspending agent, 0-10% of a dispersing agent, 0-10% of an antifoaming agent and the balance of water; and the mass of the effective component accounts for 10%-45% of that of the mixed preparation. The suspended rate of the carbosulfan and thiamethoxam micro-capsule suspending agent is greater than or equal to 90%; meanwhile, the micro-capsule suspending agent has the advantages of low pesticide toxicity, long lasting time, high insecticidal control effect, simple preparation technology and the like; rice thrips of rice, underground pests of peanut and aphids of wheat paddock can be effectively prevented and controlled; and the yield of crops is increased.

Description

Technical field: [0001] The invention relates to the technical field of crop insecticide, in particular to a microcapsule suspension containing thiamethoxam and carbosulfan and a preparation method thereof. Background technique: [0002] The chemical name of thiamethoxam is 3-(2-chloro-1,3-thiazol-5-ylmethyl)-5-methyl-1,3,5-oxadiazin-4-ylidene(nitro)amine , is a neonicotinoid low-toxicity insecticide developed by Novartis in 1991. Its mechanism of action is similar to that of imidacloprid. Normal conduction, causing the pests to die when they appear paralyzed. Not only has contact killing, stomach poisoning, and systemic activity, but also has higher activity, better safety, wider insecticidal spectrum, fast action speed, and long-lasting effect. It replaces those with high toxicity to mammals. , a better variety of organic phosphorus, carbamate, and organochlorine insecticides with residues and environmental problems. It has high activity against Coleoptera, Diptera, Lep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N51/00A01N25/04A01N25/28A01P7/04A01P7/02A01N47/24
Inventor 吴旭满童贤明吴应多
Owner ZHEJIANG TIANYI AGRI CHEM IND CO LTD
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