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Pesticide composition and preparation method thereof

A technology of pesticide composition and liquid medicine, which is applied in the field of pesticides, can solve the problems of many impurities, low extraction yield, low purity, etc., and achieve the effects of high penetration efficiency, good slow-release effect, and excellent antioxidant property

Inactive Publication Date: 2019-12-20
钱坚明 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the extraction method has been improved to some extent, there are still problems such as low extraction rate, many impurities, and low purity.

Method used

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  • Pesticide composition and preparation method thereof
  • Pesticide composition and preparation method thereof
  • Pesticide composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Preparation of toosendanin solution

[0071] refer to figure 1 Shown, the preparation method of toosendanin solution in the present embodiment may further comprise the steps:

[0072] S1. Take 1 kg of Toosendan powder and 10L of 75% alcohol, put it into an ultrasonic extraction pot for extraction, separate the alcohol liquid after the extraction is completed, filter the liquid, and separate the solid and liquid to obtain the alcohol liquid;

[0073] Among them, the extraction time is 1 hour, the wavelength / frequency of ultrasonic waves is 28Hz, the power is 1500w, and the cooling water temperature is 28°C;

[0074] S2. Concentrate the alcohol liquid obtained in step S1 in a vacuum, then add it into an aqueous solution, pour the aqueous solution into petroleum ether at a ratio of 1:1 to obtain a mixed solution a, then pour the mixed solution a into a stirring bottle, and perform mechanical stirring , stirred for 25 to 30 minutes, poured the stirred mixed solution a int...

Embodiment 2

[0119] Extraction of croton oil

[0120]The preparation method of croton oil in the present embodiment comprises the following steps: take by weighing 1000g croton powder and 8000mL sherwood oil, put into ultrasonic extraction pot, extraction time is 1 hour, the wavelength of ultrasonic wave is 28Hz, and power is 1500w, and cooling water water temperature is At 28°C, after the extraction is complete, separate the solid from the liquid, and precipitate the solution for 12 hours, then filter through a 120 μm micropore to obtain a petroleum ether clear liquid, and then put the obtained petroleum ether clear liquid into a rotary evaporator to concentrate to obtain 460 mL of croton oil.

[0121] Wherein, the content of crotonoleic acid in the obtained croton oil in the present embodiment is 2.3%.

Embodiment 3

[0123] Configure 1000mL of pesticide composition

[0124] The pesticide composition of configuring 1000mL in the present embodiment comprises the following steps:

[0125] a, take by weighing toosendanin solution 1000mL prepared in embodiment 1, croton oil 35mL prepared in embodiment 2, 25mL limonene, 95mL silicone surfactant SilwetL 77, 4mL vegetable oil emulsifier;

[0126] b. Add the toosendanin solution, croton oil, and limonene stock solution weighed in b into the emulsifier in turn, slowly add silicone surfactant and vegetable oil emulsifier during the emulsification process, and stir and emulsify for 15 to 20 minutes to obtain 1000mL of pesticide composition.

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Abstract

The invention discloses a pesticide composition and a preparation method thereof. The pesticide composition comprises a toosendanin solution, croton oil, limonene, an organosilicon surfactant SilwetL77, and a vegetable oil emulsifier. The pesticide composition product has a good sustained-release effect, is compounded by using the toosendanin solution, the croton oil, limonene, the organic silicon surfactant SilwetL 77 and the vegetable oil emulsifier, has obvious compounding synergistic effects, a long effect time, obvious insecticidal effects, and low toxicity, can be naturally degraded, and reduces drug resistance of insect pests. Toosendanin in the toosendanin solution and crotonic acid in the croton oil are plant-based pesticides, the pesticide composition does not contain any chemical pesticide ingredients, and has no residue, the damage to the environment is greatly reduced, and toxicity to an applicator during an application process is reduced. The toosendanin extraction efficiency of a toosendanin solution preparation method is 3-5 times of that of an ordinary method, production efficiency is greatly improved, the content of impurities in the prepared toosendanin solutionis greatly reduced, and the purity is high.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a pesticide composition and a preparation method thereof. Background technique [0002] The use of chemical pesticides on food crops and economic crops is to eliminate or reduce pests and diseases and increase crop yields. For more than half a century, people have become accustomed to the use of chemically synthesized pesticides. Chemically synthesized pesticides are widely used all over the world because of their good effect, quick effect, low price and convenient use. However, the use of chemically synthesized pesticides has also brought many well-known problems: food, soil, groundwater, rivers and lakes, oceans, and air are all severely polluted by chemical residues, and have side effects on non-target insects and other organisms. lead to the destruction of the ecosystem. At the same time, the species and number of insects that are resistant to chemically synthesized pes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/16A01N37/06A01N25/30A01N25/04A01P7/04C07J71/00
CPCA01N25/04A01N25/30A01N37/06A01N43/16C07J71/0005
Inventor 钱坚明
Owner 钱坚明
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