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Pyrimethanil water dispersible granule and method for preparing same

A technology of pyrimethanil and dispersible granules, which is applied in the preparation of agricultural fungicides and in the field of pyrimethanil water-dispersible granules, which can solve the problems of low content of pyrimethanil, high cost of use, and inconvenient storage and transportation, and achieve dispersibility Good, less environmental pollution, and the effect of promoting photosynthesis

Inactive Publication Date: 2009-12-02
烟台科达化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many agricultural fungicides. Pyrimethanil is one of them. It belongs to the fungicide in the field of plant protection. It has dual functions of prevention and treatment. It can be quickly absorbed by the growing part of the plant and mainly transferred to the top. It can also promote the growth of crops, make the root system developed, the leaves dark green, the plants strong, and the effective tillers increased, thereby increasing the yield, and can effectively prevent and control wheat powdery mildew, banana leaf spot, apple leaf spot, and pear tree black. Star disease is currently one of the most used products in the prevention and control of bacterial diseases, but the pyrimethanil wettable powder, pyrimethanil suspension concentrate, pyrimethanil powder, pyrimethanil EC, etc. Low pyrimethanil content, slow disintegration, poor dispersibility, serious environmental pollution, inconvenient storage and transportation, difficult packaging, and high cost of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 Take the preparation of 1000 parts of 15% pyrimethanil water-dispersible granules as an example

[0027] Weigh 150 parts of pyrimethanil original powder, 40 parts of wetting agent alkyl sulfate sulfate, 40 parts of dispersant fatty alcohol polyoxyethylene ether, 30 parts of disintegrating agent ammonium sulfate, 10 parts of adsorbent diatomaceous earth, stabilizer 30 parts of disodium hydrogen phosphate, 680 parts of light calcium carbonate as a filler, mix them uniformly, and pulverize them with a jet mill to obtain mother powder, mix the mother powder with 20 parts of binder polyvinyl alcohol, then granulate, bake Dry and sieve to obtain about 890 parts of 15% pyrimethanil water-dispersible granules, and the remaining material enters the recycling process again. The obtained pyrimethanil water-dispersible granules are tested to have an active ingredient content of 15.5%, a moisture content of 1.9%, a pH value of 7.4, a sieve (through a 75m sieve) of 98.2%, a...

Embodiment 2

[0028] Example 2 Take the preparation of 1000 parts of 25% pyrimethanil water dispersible granules as an example

[0029] Weigh 250 parts of pyrimethanil original powder, 40 parts of wetting agent alkyl sulfate, 40 parts of dispersant fatty alcohol polyoxyethylene ether, 30 parts of disintegrating agent ammonium sulfate, 10 parts of adsorbent diatomaceous earth, stabilizer phosphoric acid 30 parts of disodium hydrogen, 580 parts of light calcium carbonate as a filler, mix them uniformly, and pulverize them through a jet mill to obtain mother powder, mix the mother powder with 20 parts of binder polyvinyl alcohol, then granulate and dry , screened to obtain about 900 parts of 25% pyrimethanil water-dispersible granules, and the remaining material was re-entered into the recycling process. The obtained pyrimethanil water-dispersible granules are tested to have an active ingredient content of 25.5%, a moisture content of 1.9%, a pH value of 7.4, a sieve (through a 75m sieve) of 9...

Embodiment 3

[0030] Example 3 Take the preparation of 1000 parts of 40% pyrimethanil water-dispersible granules as an example

[0031] Weigh 400 parts of pyrimethanil original powder, 26 parts of sodium alkylsulfonate as a wetting agent, 37 parts of alkylphenol polyoxyethylene ether as a dispersant, 28 parts of anhydrous sodium sulfate as a disintegrating agent, and 14 parts of white carbon black as an adsorbent , 18 parts of succinic acid as a stabilizer, 460 parts of kaolin as a filler, mix them evenly, and then pulverize them with a jet mill to obtain mother powder, mix the mother powder with 17 parts of binder gelatin, then granulate, dry, and sieve Obtain about 900 parts of 40% pyrimethanil water-dispersible powder, and the remaining material enters the recycling process again. The obtained pyrimethanil water-dispersible powder has an active ingredient content of 40.5% after inspection, a moisture content of 1.7%, a pH value of 7.3, a sieve (through a 75m sieve) of 98.9%, a suspension...

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PUM

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Abstract

The invention discloses a pyrimethanil fungicide, and belongs to the technique of a fungicide in the field of plant protection. The composition of the invention comprises the following components by weight: 100 to 800 portions of pyrimethanil, 130 to 280 portions of auxiliary agent, 50 to 500 portions of filling material, and 10 to 50 portions of bonding agent. The components are mixed according to the proportion, evenly stirred, and crushed to obtain a mesh powder; and the mesh powder is evenly mixed with the bonding agent, and the mixture is granulated, dried and screened to obtain the pyrimethanil water dispersible granule. The method overcomes the defects existing in wettable powder, suspending agents and emulsion of pyrimethanil, and lowers use cost of peasants and environmental pollution; moreover, when the pyrimethanil water dispersible granule is used, the pyrimethanil water dispersible granule has the advantages of high content, quick disintegration, good dispersibility, convenient storage and transportation, high activity, good efficiency and safety.

Description

Technical field: [0001] The invention relates to an agricultural fungicide, in particular a pyrimethanil water-dispersible granule with dual functions of prevention and treatment, which belongs to the field of plant protection, and also relates to a preparation method of the agricultural fungicide. Background technique: [0002] At present, there are many agricultural fungicides. Pyrimethanil is one of them. It belongs to the fungicide in the field of plant protection. It has dual functions of prevention and treatment. It can be quickly absorbed by the growing part of the plant and mainly transferred to the top. It can also promote the growth of crops, make the root system developed, the leaves dark green, the plants strong, and the effective tillers increased, thereby increasing the yield, and can effectively prevent and control wheat powdery mildew, banana leaf spot, apple leaf spot, and pear tree black. Star disease is currently one of the most used products in the preven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/54A01N25/14A01P3/00
Inventor 宋国江温学志滕芳超
Owner 烟台科达化工有限公司
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