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A kind of preparation method of kudzu active material herbicide microcapsule

A herbicide and material technology, which is applied in the field of preparation of kudzu active material herbicide microcapsules, can solve the problems of short retention time and high cost, and achieve the effects of high encapsulation rate, improved plasticity and excellent herbicidal performance.

Active Publication Date: 2018-04-03
安徽省圣丹生物化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, natural herbicidal active materials are costly to produce and have a short residence time during application

Method used

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  • A kind of preparation method of kudzu active material herbicide microcapsule

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preparation example Construction

[0019] refer to figure 1 , the preparation method of a kind of kudzu active material herbicide microcapsule that the present invention proposes, comprises the following steps:

[0020] S1. Grinding the dried kudzu vine to 5-10 mesh to obtain kudzu vine powder. Mix 100-120 parts of kudzu vine and 300-350 parts of ethanol aqueous solution with a mass fraction of 92-95 wt% in parts by weight. After ultrasonic treatment, filter, wash and concentrate Obtain kudzu solution;

[0021] S2. Mix 80-85 parts of Pueraria vine solution and 100-120 parts of water at a temperature of 62-65°C in parts by volume, stir, and obtain the filtrate after suction filtration. Add 100-110 parts of petroleum ether to the filtrate. , take the supernatant to obtain extract A; add 100-110 parts of ethyl acetate to the lower clear after the first stratification, and after the second stratification, take the supernatant to obtain extract B; Add 100-110 parts of saturated n-butanol aqueous solution to the lo...

Embodiment 1

[0025] The preparation method of a kind of kudzu active material herbicide microcapsule that the present invention proposes comprises the following steps:

[0026] S1. Grinding the dried kudzu vine to 10 meshes to obtain kudzu vine powder. Mix 100 parts of kudzu vine and 350 parts of 92 wt% ethanol aqueous solution in parts by weight. After ultrasonic treatment, filter, wash, and concentrate to obtain kudzu vine solution; wherein, ultrasonic treatment The frequency is 65kHz, the power of ultrasonic treatment is 800W, and the time of ultrasonic treatment is 10min; the Baume degree of Pueraria vine solution is 31°Bé;

[0027] S2. Mix 85 parts of kudzu solution and 100 parts of water at a temperature of 65°C in parts by volume, stir, and obtain the filtrate after suction filtration, add 100 parts of petroleum ether to the filtrate, and after layering once, take the supernatant to obtain the extract A; Add 110 parts of ethyl acetate to the lower clear liquid after the first layeri...

Embodiment 2

[0030] The preparation method of a kind of kudzu active material herbicide microcapsule that the present invention proposes comprises the following steps:

[0031] S1. Pulverize kudzu vine after drying to 5 mesh to obtain kudzu vine powder, mix 120 parts kudzu vine and 300 parts mass fraction of 95wt% ethanol aqueous solution in parts by weight, after ultrasonic treatment, filter, wash, and concentrate to obtain kudzu vine solution; wherein, ultrasonic treatment The frequency is 60kHz, the power of ultrasonic treatment is 1000W, and the time of ultrasonic treatment is 7min; the Baume degree of Pueraria vine solution is 33°Bé;

[0032] S2. Mix 80 parts of kudzu solution and 120 parts of water at a temperature of 62°C in parts by volume, stir, and obtain the filtrate after suction filtration, add 1110 parts of petroleum ether to the filtrate, and after layering once, take the supernatant to obtain the extract A; Add 100 parts of ethyl acetate to the lower clear liquid after the ...

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Abstract

The invention discloses a preparation method of kudzu active material herbicide microcapsules, comprising the following steps: pulverizing dried kudzu to obtain kudzu powder, mixing kudzu and ethanol aqueous solution, ultrasonically treating, filtering, washing, and concentrating to obtain kudzu solution; Mix the kudzu solution and water, stir, and obtain the filtrate after suction filtration, mix the extract after the filtrate has been layered for three times, evaporate under reduced pressure, and dry to obtain the kudzu active material; mix the kudzu active material and soybean oil evenly, and then perform ultrasonic treatment Obtain the kudzu active material solution; mix the wall material, polyethylene glycol, citric acid, polyisobutylene, and ethanol aqueous solution evenly, stir and filter to obtain the wall material solution; add the kudzu active material solution to the wall material solution to homogenize, and then spray dry , cooling to obtain kudzu active material herbicide microcapsules. The invention has excellent herbicidal performance, long duration and no pollution to the environment.

Description

technical field [0001] The invention relates to the technical field of herbicide microcapsules, in particular to a preparation method of kudzu active material herbicide microcapsules. Background technique [0002] Pueraria vine, also known as kudzu, kudzu, Convolvulaceae, silver back vine vines, kudzu can grow tens of meters or even hundreds of meters, its leaves alternate, the length can reach 40-50cm. Pueraria has both edible and medicinal value. The root of Pueraria is deeply loved by the common people because it is rich in amino acids, isoflavones, puerarin and other nutrients, and has the functions of lowering blood pressure, lowering blood lipids, clearing fire and detoxifying. However, kudzu vine reproduces very quickly, and in forest areas, it often wraps and covers trees due to crazy growth, causing the trees to fail to grow normally or even die. Pueraria contains a large amount of alkali-based active materials, which can strongly inhibit the germination of grass s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/08A01N25/28A01P13/00
Inventor 钱同兰陈今如郑雷王朝文
Owner 安徽省圣丹生物化工有限公司
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