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Lambda-cyhalothrin emulsifiable granule and preparation method and application thereof

A technology of high-efficiency cyhalothrin and emulsion granules, which can be applied in the directions of botanical equipment and methods, applications, pesticides, etc. Overcome the problem of volatilization stimulation, good thermal storage stability, and less environmental irritation

Active Publication Date: 2015-04-29
天津市华宇农药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many types of formulations of lambda-cyhalothrin, including emulsifiable concentrate, water-emulsion, microemulsion, wettable powder, water-dispersible granule, microcapsule, etc. Due to the characteristics of lambda-cyhalothrin, it is generally made The content of the preparations is relatively low, and the solvent used to make emulsifiable concentrates is relatively large, which is more serious to environmental pollution; made into water emulsion and microemulsion, because some traditional solvents will also cause volatilization, which is very irritating to the user's skin; made into microcapsules The cost is relatively high; when made into wettable powder, the dust is relatively large; now it is better to make water-dispersible granules, which is both environmentally friendly and less irritating to users, but due to the relatively low melting point of lambda-cyhalothrin, causing After granulation, when heated or stored for a long time, part of the original drug will melt and aggregate, resulting in inability to disintegrate, low suspension rate, and loss of efficacy

Method used

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  • Lambda-cyhalothrin emulsifiable granule and preparation method and application thereof
  • Lambda-cyhalothrin emulsifiable granule and preparation method and application thereof
  • Lambda-cyhalothrin emulsifiable granule and preparation method and application thereof

Examples

Experimental program
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Embodiment 1

[0028] A kind of lambda-cyhalothrin emulsifiable preparation of the present embodiment is prepared according to the following steps: first mix lambda-cyhalothrin, NP-10 (emulsifier), methyl oleate (solvent) into a homogeneous solution, and then use White carbon black is evenly adsorbed; then add sodium lauryl sulfate (wetting agent), sodium lignosulfonate (dispersant) and kaolin (inert filler), mix well, carry out jet milling, add 15g of Vinyl alcohol (binder) in water, kneaded evenly, and granulated by a granulator to obtain lambda-cyhalothrin emulsion (EG).

[0029] The NP-10 described in embodiment 1 belongs to the alkylphenol polyoxyethylene ether class, in the present embodiment as emulsifying agent; Described sodium lauryl sulfate belongs to alkyl sulfate, in the present embodiment as Wetting agent; Sodium lignosulfonate belongs to lignosulfonate and is used as a dispersant in this embodiment.

[0030] According to the above steps, beta-cyhalothrin emulsifiers with diff...

Embodiment 2

[0034] In this embodiment, a kind of efficient cyhalothrin emulsion is prepared according to the following steps: first mix efficient cyhalothrin, BY130 (emulsifier), and soybean oil (solvent) into a homogeneous solution, and then adsorb it with white carbon black uniform; then add sodium dodecylsulfonate (wetting agent), NNO (dispersant) and diatomaceous earth (inert filler), mix well, carry out jet milling, add 5g of polyvinyl alcohol (bonding agent) after pulverization agent) water, kneaded evenly, and granulated by a granulator to obtain lambda-cyhalothrin emulsion (EG).

[0035] The BY130 described in embodiment 2 is the emulsifier produced by Haian Petrochemical Plant in Jiangsu Province, which belongs to castor oil and ethylene oxide adduct, and is used as emulsifier in the present embodiment; described dodecylsulfonic acid Sodium belongs to alkyl naphthalene sulfonate and is used as a wetting agent in this embodiment; the NNO is 2-naphthalenesulfonic acid formaldehyde ...

Embodiment 3

[0040] A kind of lambda-cyhalothrin emulsifier of the present embodiment is prepared according to the following steps: first prepare lambda-cyhalothrin, SK-34SC (emulsifier), SK-5945 (emulsifier), SK-551 (emulsifier) ), methyl oleate (solvent) to form a homogeneous solution, and then use white carbon black to absorb evenly; then add SK-10LX (wetting agent), SK-24 (dispersant) and corn starch (inert filler), and mix evenly , carry out jet milling, add 30g of water with PVA1788 (binder) after pulverization, knead evenly, granulate by granulator, namely make efficient cyhalothrin emulsion (EG).

[0041] The SK-34SC, SK-5945, SK-551, SK-10LX, and SK-24 described in this example are all products of Xingfei Chemical (Shanghai) Co., Ltd.; wherein the SK-34SC belongs to the anionic aryl Polyoxyalkylsulfate, SK-5945 belongs to alkyl polyoxyethylene ether, SK-551 belongs to anionic alkylsulfonate, all used as emulsifier in this implementation; described SK-10LX belongs to alkylsulfate, A...

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Abstract

The invention discloses a lambda-cyhalothrin emulsifiable granule and a preparation method and an application thereof, and relates to a pesticide containing pyrethroids, a preparation method and an application of the pesticide, and aims at providing the lambda-cyhalothrin emulsifiable granule which is small in environmental-friendly thrill, good in heat-storage stability and high in suspension rate, and a preparation method and an application of the lambda-cyhalothrin emulsifiable granule. The emulsifiable granule disclosed by the invention comprises lambda-cyhalothrin, an emulsifier, a solvent, white carbon black, a wetting agent, a dispersing agent and the like. The preparation method disclosed by the invention comprises the following steps: mixing the lambda-cyhalothrin, the emulsifier and the solvent; adsorbing with the white carbon black; adding the wetting agent, the dispersing agent and inert packing, mixing evenly, and crushing; and adding water with a binder, kneading evenly and pelletizing. The emulsifiable granule disclosed by the invention is immediately disintegrated and emulsified after being fed to water, is small in environmental-friendly thrill, good in ageing stability and heat-storage stability and high in suspension rate. The preparation method disclosed by the invention is simple and suitable for large-scale industrial production. The lambda-cyhalothrin emulsifiable granule is used for preventing and treating insect pests in crop plants.

Description

technical field [0001] The invention relates to an insecticide containing pyrethroids, its preparation method and its application. Background technique [0002] Lambda-cyhalothrin, the common name in English, is an insectoid insecticide and acaricide. The mechanism of action is to inhibit the conduction of insect nerve axons, and it has the functions of avoiding, knocking down and poisoning insects. effect. Rain resistant after spraying. Broad insecticidal spectrum, high activity, rapid efficacy. It has a good effect on various pests such as Lepidoptera, Coleoptera and Hemiptera and other pests, as well as spider mites, rust mites, gall mites, tarsal mites, etc. It can also treat insects and mites concurrently, and can control cotton red Bollworm and cotton bollworm, cabbage caterpillar, cabbage aphid, tea looper, tea caterpillar, tea orange gall mite, leaf gall mite, citrus leaf moth, orange aphid and citrus spider mite, rust mite, peach borer and pear borer, etc. It ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N53/08A01N25/12A01N25/30A01P7/04
Inventor 田海丰李吉宏张毅超董宝库王敏田金生赵小翠乔立东寇俊杰
Owner 天津市华宇农药有限公司
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