A composition containing thiazole zinc particles and its preparation method

A composition, the technology of thiazole zinc, applied in the field of pesticides, can solve problems such as lack of research, and achieve the effect of quick-acting and long-lasting effects

Active Publication Date: 2021-02-02
ZHEJIANG XINNONG CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, for thiazole zinc, what is the effect of the particle size of the original drug on its activity? What kind of particle size can best exert the direct application performance and preparation application performance of the thiazole zinc original drug? The impact of the diameter on the activity and the change in the activity of the preparations prepared by using different particle sizes of the original drug thiazole zinc particles, so far, there is no research clearly

Method used

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  • A composition containing thiazole zinc particles and its preparation method
  • A composition containing thiazole zinc particles and its preparation method
  • A composition containing thiazole zinc particles and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The preparation of embodiment 1 thiazole zinc former composition

[0045] Add 0.09 cubic meters of water into a 0.5 cubic meter reaction kettle, put in 27Kg of sodium hydroxide, stir and dissolve, then add 90Kg of thiadiazole, stir to obtain completely dissolved A liquid, and put it in another 0.2 cubic meter of reaction kettle , place 0.1 cubic meter of water, then drop into zinc sulfate 20Kg and dissolve to obtain liquid B. In the state of liquid A under shearing and stirring, add liquid B into the reaction kettle containing liquid A at a rate of 0.05 cubic meters per hour, continue shearing and stirring, and maintain the temperature range at 70-80°C, starting from adding liquid B, After 3 hours of reaction, thiazole zinc granules are prepared, and the thiazole zinc granules are filtered, washed with water and dried to obtain thiazole zinc original drug composition granules. The speed of shear stirring is adjusted between 100 rpm and 4000 rpm to obtain thiazole zinc ...

Embodiment 2

[0049] The direct use drug effect of embodiment 2 thiazole zinc former medicine composition

[0050] The thiazole zinc original drug composition granules of the above table 1 were used to prepare respectively 2% thiazole zinc smear and 20% thiazole zinc water dispersible granule. Preparation of medicines by mixing medicines. When preparing 2% thiazole zinc smear and 20% thiazole zinc water dispersible granules, except that the particle diameter of the original drug adopted is different, all the other auxiliary ingredients and their contents are the same.

[0051] Apply 2% thiazole zinc smear to prevent and control kiwifruit canker, select plants with symptoms of disease to mark, scrape the skin of the diseased branches, and then treat them with medicaments respectively, set a blank control, 3 for each treatment Repeat, apply once every 5 days, and investigate the control effect 7 days and 14 days after the last medicine.

[0052] Apply 20% thiazole zinc water-dispersible gra...

Embodiment 3

[0061] The drug effect of embodiment 3 thiazole zinc preparation composition

[0062] The thiazole zinc technical particle in above-mentioned table 1 is processed into 20% suspending agent, and the suspending agent that obtains different thiazole zinc particle diameters is prepared by adjusting the time and the frequency of grinding.

[0063] A1-A15 in Table 1 was prepared into 20% thiazole zinc suspension concentrate respectively, wherein only the A2 thiazole zinc sample whose particle size D90 of the original composition of thiazole zinc was greater than 60 μm was prepared into a thiazole zinc suspension concentrate sample, and thiazole zinc suspension The thiazole zinc sample A12 whose particle size D90 of the original drug composition is less than 20 μm was prepared as a thiazole zinc suspension.

[0064] The particle size of the thiazole zinc suspension concentrate obtained by grinding the original drug of thiazole zinc in the following table 3.

[0065] Table 3 Particle...

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Abstract

The invention relates to a composition containing zinc thiazole particles and a preparation method thereof. The composition is composed of particles, the mass fraction of the zinc thiazole components in the particles accounts for more than or equal to 95% of the total mass of the particles, and the particle size of the particles is D50 The value is 6.0±1.0 μm to 26.0±1.0 μm, and the particle size D90 of the particles is 60.0 μm or less. The present invention finds that when the particle size D90 of the original drug composition is less than 60 μm, it can be directly used as a pharmaceutical active ingredient for preventing and controlling diseases, and it can be used as a preparation ingredient for preventing and treating certain diseases of certain crops without grinding it. .

Description

technical field [0001] The invention belongs to the field of pesticides, in particular to the development of granular pesticide products, and in particular, to a composition containing zinc thiazole particles and a preparation method thereof. Background technique [0002] Zinc thiazole is an important fungicide, and its chemical name is 2-amino-5-mercapto-1,3,4-thiadiazole zinc. The structure of zinc thiazole is composed of two groups to kill bacteria. One is the thiazole group, which has no inhibitory effect on bacteria outside the plant, but it is a highly effective therapeutic agent inside the plant. The bacteria are seriously damaged when the medicine is placed in the porous ducts of the plant, and its cell wall becomes thinner and then disintegrated, resulting in the death of the bacteria. die. The second is zinc ions, which have both fungicidal and bactericidal effects. The zinc ions in the drug exchange with the cations (H+, K+, etc.) on the surface of the pathogen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/824A01N25/04A01P1/00A01P3/00C07D285/125
CPCA01N25/04A01N43/82C07D285/125A01N25/14C07D285/135
Inventor 徐群辉沈海峰李俊张军
Owner ZHEJIANG XINNONG CHEM CO LTD
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