Thiophthanate methyl water dispersible granular agent and its formula

A thiophanate-methyl, dispersive technology, applied in the field of thiophanate-methyl water-dispersible granules and formulations, can solve the problems of endangering human health, environmental pollution, high use cost, etc., and achieve low environmental pollution and bactericidal efficacy The effect of high, high content of active ingredients

Inactive Publication Date: 2005-03-23
SHAANXI SUNGER ROAD BIO SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to develop a high content, environment-friendly, high utilization rate, and easy-to-use thiophanate-methyl water-dispersed solution in order to overcome the shortcomings of the prior art such as environmental pollution, harm to human health and high use cost. Granules and formulations

Method used

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  • Thiophthanate methyl water dispersible granular agent and its formula

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 72% of thiophanate-methyl raw powder, 3% of wetting agent phenylethylphenol polyoxyethylene ether formaldehyde, 6% of dispersant sodium lignosulfonate, 5% of sodium sulfate, and 8% of diluent light calcium carbonate , mix it according to the general method, after stirring evenly, pulverize it through a jet mill to obtain mother powder, mix the mother powder with 6% binder-modified sodium polyacrylate 80, then granulate, dry, and sieve to obtain about 96% 70% thiophanate-methyl water dispersible granules. After testing, the active ingredient content is 70.8%, the moisture content is ≤2.5%, the pH value is 7.1, the sieving (through a 75μm sieve) is ≥98%, the suspension rate is ≥65%, the persistent foaming property (1min)≤10mL, and the wettability≤1min , dust ≤ 3.0%, accelerated thermal storage stability qualified. In practice, the dosage for preventing and treating apple tree spot defoliation is 700-875 mg / kg, and the control effect is 78-98%.

Embodiment 2

[0023] Weigh 73% of the original powder of thiophanate-methyl, 4% of sodium methylene bis-naphthalene sulfonate as a wetting agent, 5% of sodium polycarboxylate as a dispersing agent, 6% of white carbon black as a disintegrating agent, and 8% of diatomaceous earth as a diluent %, after mixing it evenly, it is pulverized by an airflow mill to obtain the mother powder, and the mother powder is mixed with 4% polyethylene glycol No. 72 binder evenly, then granulated, dried, and sieved to obtain about 96% of the 70% thiophanate-methyl water-dispersible granules. After inspection, the active ingredient content is 71.1%, moisture ≤ 2.5%, PH value 7.4, sieving (through 75μm sieve) ≥ 98%, suspension rate ≥ 65%, persistent foaming (1min) ≤ 10mL, wettability ≤ 1min , dust ≤ 3.0%, accelerated thermal storage stability qualified. The dosage for preventing and treating apple tree spot defoliation is 700-875 mg / kg, and the control effect is 81-90%.

Embodiment 3

[0025] Weigh 53% of thiophanate-methyl raw powder, 6% of sodium phenylethylphenol polyoxyethylene ether sulfate as a wetting agent, 6% of sodium lignosulfonate as a dispersing agent, 8% of attapulgite as a disintegrating agent, and kaolin as a diluent 20%, after mixing it evenly, it is pulverized by a jet mill to obtain the mother powder, and the mother powder is mixed with 7% polyethylene glycol No. 72 binder, then granulated, dried, and sieved to obtain about 97% 50% thiophanate-methyl water dispersible granules. After inspection, the active ingredient content is 52.7%, the moisture content is ≤2.5%, the pH value is 7.3, the sieving (through a 75μm sieve) is ≥98%, the suspension rate is ≥65%, the persistent foaming property (1min) is ≤10mL, and the wettability is ≤1min , dust ≤ 3.0%, accelerated thermal storage stability qualified. The dosage for preventing and treating apple tree spot defoliation is 700-875 mg / kg, and the control effect is 78-96%.

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Abstract

A granular thiophanate-methyl with high water dispersity is prepared from thiophanate-methyl powder, wetting agent, disperser, disintegrant, diluent and adhesive through proportional mixing, stirring, pulverizing, granulating, drying and sieving.

Description

technical field [0001] The invention relates to an agricultural fungicide, in particular to thiophanate-methyl water-dispersible granules and its formula. Background technique [0002] At present, there are many agricultural fungicides, and thiophanate-methyl is one of them. It has the characteristics of high bactericidal activity, good safety performance and wide bactericidal spectrum. However, the former powder of thiophanate-methyl is generally made into wettable powder and suspending agent in current use. Due to the serious dust pollution in the process of processing and use of wettable powder, which is very harmful to the environment and human health, and has the disadvantages of low effective utilization rate and short duration of effect, it is a relatively backward and on the verge of elimination among the current pesticide formulations. Although the suspension concentrate is an environmentally friendly preparation, it requires high process conditions in production,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/28
Inventor 郑敬敏王同斌
Owner SHAANXI SUNGER ROAD BIO SCI
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