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Pesticide effervescence combination and preparation method thereof

A composition and pesticide technology, applied in the field of pesticides, can solve the problems of limited application range, leaving powder traces, etc., and achieve the effects of reducing the chance of aggregation and crystallization, rapid diffusion, and improving operation efficiency

Inactive Publication Date: 2009-06-17
NAVY MEDICINE RES INST OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These technical methods have improved the solubility of pesticides in water to a certain extent, but even if the particle size of jet milling reaches 1000 mesh, it is still on the order of 10 microns, and the prepared spray liquid is an opaque suspension, and contains water-insoluble carriers. Pesticide effervescent, the suspended particles in the spray liquid prepared by it are also obvious. If these spray liquids are used for sanitation and pest control, they will easily leave powder marks on the surface of the treatment, and their application range is limited to a certain extent.

Method used

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  • Pesticide effervescence combination and preparation method thereof
  • Pesticide effervescence combination and preparation method thereof
  • Pesticide effervescence combination and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1 Pesticide Effervescent Composition

[0045] Table 1 Pesticide effervescent compositions with different formulations

[0046]

[0047] 1. 2.0% pyriproxyfen effervescent granules

[0048] Carry out with reference to the production process flow described in the present invention. Use 12.0 parts of polyvinylpyrrolidone and 6.0 parts of urea as the joint carrier, stir and mix with an appropriate amount of ethanol at 70±5°C, melt 2.0 parts of pyriproxyfen with acetone, add it to the joint carrier mixture, and emulsify at a high speed of 2000r / min After 15 minutes, the pyriproxyfen solid dispersion system that can be obtained by spray drying, 30.0 parts of tartaric acid and 42.0 parts of sodium bicarbonate are ultrafinely pulverized and passed through a 800 mesh sieve, and the sieved pyriproxyfen solid dispersion system, tartaric acid, Sodium bicarbonate and hydroxypropyl cellulose are fully stirred and mixed, and then granulated. This product can be used for t...

Embodiment 2

[0057] Example 2 Disintegration and Solution Properties Observation of Pesticide Effervescent Composition

[0058] The amount required to prepare 500ml of aqueous solution according to the concentration of use is taken by weighing five kinds of effervescent agents prepared in Example 1 and commercially available Yishate effervescent tablets, numbered 1-6 respectively, and observing the disintegration time and Dispersion uniformity, transparency. Each group was repeated three times, and the disintegration time was taken as the average value of the three tests. The dispersion uniformity test was judged based on whether it passed the No. 2 sieve. If all passed, it was qualified; otherwise, it was unqualified. The results are shown in Table 2.

[0059] Table 2 Disintegration time, dispersion uniformity and transparency observation of different types of effervescent compositions

[0060]

[0061] It can be seen from the table that the aqueous solutions of the six preparations c...

Embodiment 3

[0062] The insecticidal efficacy test of embodiment 3 effervescence

[0063] Take 4% cyhalothrin effervescent tablet as an example:

[0064] 1. Take 3 tablets of 4% cyhalothrin in Example 1, coded as A, B, and C, and put them into 500ml water beakers respectively, and let stand for 30 minutes after the disintegration is complete;

[0065] 2. Use a pipette to take 1.125ml from the three solutions and put it on a 15cm×15cm ordinary tile, and spread it evenly. Apply each solution to three tiles and dry it for later use;

[0066] 3. The test worms were 2-week-old adults of the sensitive strain of Blattella germanica. Divide the test insects into groups, 10 in each group, 3 blocks each time, force the test insects to touch the treatment surface of the tile, record the number of knocked down insects per minute after the stopwatch counts, and move all the test insects to a clean glass tank after 20 minutes. After feeding, check the number of dead test worms at 48 hours.

[0067] 4...

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Abstract

The invention relates to a agricultural chemicals branch of technology, specifically to an agriculture chemicals effervescence composition and a preparation method thereof.The invention discloses an agricultural chemicals effervescence composition comprising effervescence components, active compounds of agricultural chemicals, and the invention is characterized in that, taking the total weight as the basic reference, the agricultural chemicals effervescence composition also comprises the following components that water soluble base with a percentage by weight of 5-45% and water-soluble high molecular polymer with percentage by weight of 3-30% which form a united vector, and the active ingredients of agricultural chemicals are coated by the carrier to form a solid highly dispersed system.Every type of matters in the agricultural chemicals effervescence composition of the present invention has a better water-soluble performance, active compounds of agricultural chemicals can be highly dispersed into particles with a size of 0.001-0.1micrometre, the particle size of the active compounds of agricultural chemicals is much smaller than that of water-dispersion granulas, water dispersible powder and the like, the composition does not include any water-insoluble matters such as waterproofing agents, thinning agent and the like that are used by conventional effervescing agents, and once in water, the obtained effervescence composition is disintegrated instantly and rapidly and can be diffuse easily.Therefore, suspending particulate matters will never appear in the obtained solution, and if the prescription is reasonable, the solution will be clear and transparent; therefore, the composition can not only be used for expelling agriculture disease, but also be extensively used in the filed of expelling sanitation disease.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a pesticide effervescent composition and a preparation method thereof. Background technique [0002] At present, the existing dosage forms in my country's pesticide market mainly include wettable powder, emulsifiable concentrate, microemulsion, etc. Most of these dosage forms have simple production processes, poor safety for personnel during the production process, and serious pollution to the production environment; at the same time, in the process of application, measurement is inconvenient, Poor drug efficacy, low utilization rate of pesticides, certain pollution to agricultural ecology and the environment, serious pesticide residues and other defects. Since the 1990s, the development of new pesticide varieties in the world has shifted from high-efficiency and low-toxicity varieties to environmentally safe varieties; new formulations and new use methods that are pollution-fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/12A01N25/08
Inventor 孙锦程郝蕙玲巴剑波林永丽武文斌徐雄利
Owner NAVY MEDICINE RES INST OF PLA
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