Lambda-cyhalothrin microcapsule suspending agent and preparation method thereof

A technology of high-efficiency cyhalothrin and microcapsule suspending agent, which is applied in the fields of botanical equipment and methods, insecticides, biocides, etc., can solve the problems of low coating rate, complicated process, unstable quality and the like

Active Publication Date: 2021-05-28
JINAN TIANBANG CHEM
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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 solve the problems of existing high-efficiency cyhalothrin microcapsules with complex process, high cost, unstable quality, low c...

Method used

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  • Lambda-cyhalothrin microcapsule suspending agent and preparation method thereof
  • Lambda-cyhalothrin microcapsule suspending agent and preparation method thereof
  • Lambda-cyhalothrin microcapsule suspending agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Prepare 2% lambda-cyhalothrin microcapsule suspension, the percentage by weight of the material is as follows:

[0037] 95.3% active ingredient of lambda-cyhalothrin: 2.1g, active ingredient 2.0g

[0038] Solvent: cyclohexanone 3g

[0039] Covering material: white carbon black 4g

[0040] Dispersant: sodium lignosulfonate 3g

[0041] Emulsifier: Lauryl Polyoxyethylene Ether 1g

[0042] Preservative: Sodium Benzoate 0.1g

[0043] Thickener: xanthan gum 0.2g

[0044] Deionized water 86.6g

[0045] Preparation steps:

[0046] (1) 2.1g content of 95.3% beta-cyhalothrin former medicine is dissolved evenly with 3g cyclohexanone;

[0047] (2) With 4g of white carbon black, the material obtained in step (1) is mixed uniformly in a mortar;

[0048] (3) Transfer the material obtained in step (2) into a 250ml beaker, and add sodium lignosulfonate 3g, polyoxyethylene lauryl ether 1g, sodium benzoate 0.1g, xanthan gum 0.2g, deionized water 86.6g, Use a high shear machine to...

Embodiment 2

[0051] Prepare 5% lambda-cyhalothrin microcapsule suspension, the percentage by weight of the material is as follows:

[0052] Beta-cyhalothrin technical drug with a content of 96.15%: 5.2g, active ingredient 5.0g;

[0053] Solvent: Cyclohexanone 7g

[0054] Covering material: white carbon black 8g

[0055] Dispersant: sodium lignosulfonate 3g

[0056] Emulsifier: Lauryl Polyoxyethylene Ether 1g

[0057] Preservative: Sodium Benzoate 0.1g

[0058] Thickener: xanthan gum 0.2g

[0059] Deionized water 75.5g

[0060] Preparation steps:

[0061] (1) 5.2g content of 96.15% beta-cyhalothrin former medicine is dissolved evenly with 7g cyclohexanone;

[0062] (2) Mix the material obtained in step (1) in a mortar with 8g white carbon black;

[0063] (3) Transfer the material obtained in step (2) into a 250ml beaker, and add sodium lignosulfonate 3g, polyoxyethylene lauryl ether 1g, sodium benzoate 0.1g, xanthan gum 0.2g, deionized water 75.5g, Use a high shear machine to cut f...

Embodiment 3

[0066] The preparation content is 8% lambda-cyhalothrin microcapsule suspension concentrate, and the percentage by weight of the material is as follows:

[0067] Beta-cyhalothrin technical product with a content of 96.15%: 8.32g, active ingredient 8.0g;

[0068] Solvent: Cyclohexanone 10g

[0069] Coating material: white carbon black 10g

[0070] Dispersant: sodium lignosulfonate 3g

[0071] Emulsifier: Lauryl Polyoxyethylene Ether 1g

[0072] Preservative: Sodium Benzoate 0.1g

[0073] Thickener: xanthan gum 0.2g

[0074] Deionized water 67.38g

[0075] Preparation steps:

[0076] (1) be 96.15% beta-cyhalothrin former drug with 8.32g content and dissolve evenly with 10g cyclohexanone;

[0077] (2) Mix the material obtained in step (1) in a mortar with 10g white carbon black;

[0078] (3) Transfer the material obtained in step (2) into a 250ml beaker, and add 3g of sodium lignosulfonate, 1g of polyoxyethylene lauryl ether, 0.1g of sodium benzoate, 0.2g of xanthan gum, ...

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Abstract

The invention provides a lambda-cyhalothrin microcapsule suspending agent. The average particle size of a microcapsule is 3-5 [mu]m, and the microcapsule is composed of a surfactant, lambda-cyhalothrin and white carbon black, wherein lambda-cyhalothrin is adsorbed in pores in the white carbon black, the surface is coated with the surfactant, and the surfactant comprises an emulsifier and a dispersant. The lambda-cyhalothrin microcapsule suspending agent is high in coating rate, free components and breakage rate of the lambda-cyhalothrin microcapsule suspending agent are lower than those of lambda-cyhalothrin microcapsule suspending agents prepared by other methods, the lambda-cyhalothrin microcapsule suspending agent has good controlled release performance, the stability of lambda-cyhalothrin can be improved, and the lambda-cyhalothrin microcapsule suspending agent can exert an insecticidal effect for a long time after being applied and used. According to the lambda-cyhalothrin microcapsule suspending agent, white carbon black is used as a coating material, raw materials are easy to obtain, chemical reaction for capsule forming is not needed, the process is simple, the production efficiency is high, the cost is low, and the lambda-cyhalothrin microcapsule suspending agent is more suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of pesticide preparation processing, and relates to a high-efficacy-cyhalothrin microcapsule suspension and a preparation method thereof. Background technique [0002] Cyhalothrin has the effects of avoiding, knocking down and poisoning insects, and is widely used in grasslands, grasslands, and upland crops to control meadow borers. However, lambda-cyhalothrin can easily cause human skin allergies, redness, swelling, and itching; and it will degrade soon after being applied to the field, with a short duration of effect, which cannot achieve the effect of long-term control of pests. [0003] As a kind of sustained-release dosage form, microcapsule is one of the fastest-growing dosage forms at present. It uses natural, semi-natural or synthetic coating materials, and uses physical, chemical, and physical-chemical methods. Encapsulating the active ingredients of pesticides can improve the stability of the active ingredi...

Claims

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Application Information

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IPC IPC(8): A01N25/28A01N25/04A01N53/08A01N25/32A01P7/04
CPCA01N25/28A01N25/04A01N53/00A01N25/32
Inventor 丁绍武张鹏邢超峰郭玉峰姚文权
Owner JINAN TIANBANG CHEM
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