Pesticide oil suspension agent and preparation method thereof

A technology for oil suspensions and pesticides, applied in the field of pesticide oil suspensions and their preparation, can solve problems such as thermodynamic instability of oil suspensions, and achieve the effects of broad production and application prospects, excellent control effects, and good spreadability.

Active Publication Date: 2010-07-28
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, oil suspension is a thermodynamically unstable system. Over time, changes such as bottoming, oil slicks, and stratification will inevitably occur in the end.

Method used

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  • Pesticide oil suspension agent and preparation method thereof
  • Pesticide oil suspension agent and preparation method thereof

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preparation example Construction

[0031] Meanwhile, the present invention also provides the preparation method of pesticide oil suspension in above-mentioned embodiment, and this method comprises the steps:

[0032] Mix and emulsify the dispersion medium and the emulsifier according to the formula in the above-mentioned embodiment;

[0033] Add pesticide active ingredients, functional additives, inert fillers, defoamers, antioxidants and mix to form a slurry;

[0034] The slurry is sanded by a sand mill to obtain an oil suspension.

[0035] The above-mentioned functional additives can also be added together with the dispersion medium and emulsifier, and other components can be added after mixing and emulsifying. In this example, the time, temperature, and humidity related to the preparation method of the pesticide oil suspension are not strictly limited, and can be flexibly adjusted according to different production needs without affecting the performance of the final product

[0036] The oil suspension prep...

Embodiment 1

[0041] 24% Thiacloprid oil suspension

[0042]Add 4 grams of nonylphenol polyoxyethylene ether, 4 grams of castor oil ethylene oxide adduct, 5 grams of polyglycerol fatty acid ester, 2 grams of JFC (fatty alcohol polyoxyethylene ether) and 55.4 grams of methyl oleate. After mixing and emulsification, add 25.3 grams of 95% thiacloprid former drug, 0.3 gram of organic silicon defoamer, and 4 grams of bentonite in the beaker, and stir to make the materials in the beaker into a uniform slurry. The slurry is poured into a laboratory 0.1L vertical small sand mill with sand grinding beads, and sanded continuously for 1 to 1.5 hours to obtain an oil suspension sample. The particle size of the sample was detected by a Malvern laser particle size distribution analyzer at room temperature, and the particle size was measured as D102.174 μm, D504.115 μm, and D906.502 μm. The sample was stored cold at 0°C for 7 days, and stored hot at 54°C for 14 days. The sample had no bottoming, and the...

Embodiment 2

[0044] 30% Thiamethoxam* Chlorantraniliprole Oil Suspension

[0045] Add 461 grams of methyl oleate, 70 grams of polyoxyethylene sorbitan oleate, 50 grams of calcium alkylaryl sulfonate, 60 grams of single branched chain alkyl alcohol polyoxyethylene ether (15EO ) and 30 grams of 2-ethyl-hexyl polyoxyethylene ether, after mixing and emulsification, add 158 grams of content 95% thiamethoxam, 158 grams of content 95% chlorantraniliprole, and 10 grams of white carbon black , 3 grams of organosilicon defoamer, stir to make the material in the beaker into a uniform slurry, and this slurry is continuously passed into a horizontal sand mill (DYNO-mill laboratory sand mill), and the circular sand mill Samples were prepared 3 times. The sample was tested with a Malvern laser particle size distribution analyzer at room temperature for particle sizes D102.074 μm, D504.315 μm, and D906.736 μm. The suspension rate of the sample at room temperature is 96%. The sample is stored cold at 0°C...

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Abstract

The invention provides a pesticide oil suspension agent and a preparation method thereof; the pesticide oil suspension agent contains a pesticide active component, emulsifier, defoamer and a dispersion medium; and the dispersion medium is methyl oleate or the mixture of oil methyl ester and vegetable oil. The method for preparing the pesticide oil suspension agent comprises the following steps that: the dispersion medium and the emulsifier are mixed and emulsified; other components are added in to be mixed into pulp; and the pulp is ground by a grinder to prepare the oil suspension agent. Thepesticide oil suspension agent of the invention has small average grain size and high dispersion stability, has good extendibility and permeability on plant leaves, and improves the medicine effect of the product; and the preparation method of the pesticide oil suspension agent has simple process and low cost, facilitates industrial production, and has wide production application prospect.

Description

technical field [0001] The invention belongs to the field of pesticide preparations, in particular to a pesticide oil suspension and a preparation method thereof. Background technique [0002] Pesticide oil suspension refers to a highly dispersed and stable pesticide preparation obtained by wet ultrafine pulverization of the original pesticide and various auxiliaries (emulsifiers, functional auxiliaries, inert fillers, etc.) using oil as the dispersion medium. Pesticide oil suspension has the advantages of wettable powder, water suspension and emulsifiable concentrate. In terms of drug efficacy, the herbicide effect of oil suspension is better than that of wettable powder and water suspension, and the effect of insecticide and fungicide is similar to that of emulsifiable concentrate. . Pesticide oil suspension uses oil as the dispersion medium to make it environmentally friendly and low in price. At the same time, it reduces the use of a large amount of organic solvents, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N47/40A01N51/00A01N43/56A01N43/40A01N37/50A01N47/24A01N43/653A01N43/90A01N39/04A01N41/10A01N43/70A01P7/00A01P3/00A01P13/00
Inventor 林雨佳谢晔赵军刘立拴曹明章王新军孔建
Owner SHENZHEN NOPOSION AGROCHEM
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