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Production method for water dispersible granule of diuron

A production method and technology of diuron, applied in the directions of herbicides and algaecides, botanical equipment and methods, biocides, etc., can solve the problem of uneven quality of diuron granules, poor granulation compactness, Increase the operating time and other problems, to achieve the effect of good mixing effect, improved redispersibility performance, and improved compactness

Inactive Publication Date: 2021-03-05
ANHUI GUANGXIN AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the existing Diuron water-dispersible granule production process, the quality of the Diuron granules produced is uneven, and the quality of the same batch is also very different. The compactness of the granulation is not good, and the suspension rate is low. Low, and in order to mix the components more evenly, the operating time will increase accordingly, and the production capacity will also decrease

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A production method of Diuron water-dispersible granules, comprising the following steps:

[0033] Step 1. Weigh the following raw materials in parts by weight: 550 parts of Diuron technical, 55 parts of corn flour, 35 parts of dispersant 1, 12 parts of wetting agent, 6 parts of dispersant 2, wherein the standard of Diuron technical is : The active ingredient diuron content is not less than 98%, the heating loss is not higher than 2%, the pH range is between 7.0-8.0, the acetone insoluble content is lower than 0.5%, and the dispersant one is an anionic dispersant, wetting agent The wet agent is a surfactant with an HLB value between 8.4 and 8.6, and the second dispersant is made by uniformly mixing a lignin dispersant and a carboxylate dispersant at a weight ratio of 3:2.

[0034] Step 2, adding the diuron technical material into a pulverizer for pulverization to obtain diuron ingredients with a particle size of 38um, which are then used;

[0035] Step 3. Diuron ingred...

Embodiment 2

[0042] A production method of Diuron water-dispersible granules, comprising the following steps:

[0043] Step 1. Weigh the following raw materials in parts by weight: 580 parts of Diuron original drug, 58 parts of corn flour, 38 parts of dispersant one, 15 parts of wetting agent, and 7 parts of dispersant two. The standard of Diuron original drug is : The active ingredient diuron content is not less than 98%, the heating loss is not higher than 2%, the pH range is between 7.0-8.0, the acetone insoluble content is lower than 0.5%, and the dispersant one is an anionic dispersant, wetting agent The wet agent is a surfactant with an HLB value between 8.4 and 8.6, and the second dispersant is made by uniformly mixing a lignin dispersant and a carboxylate dispersant at a weight ratio of 3:2.3.

[0044] Step 2, adding the diuron technical substance into a pulverizer for pulverization to obtain diuron ingredients with a particle size of 40um for use;

[0045] Step 3. Diuron ingredie...

Embodiment 3

[0052] A production method of Diuron water-dispersible granules, comprising the following steps:

[0053] Step 1. Weigh the following raw materials in parts by weight: 620 parts of diuron technical, 60 parts of corn flour, 40 parts of dispersant one, 18 parts of wetting agent, and 8 parts of dispersant two, wherein the standard of diuron technical is : The active ingredient diuron content is not less than 98%, the heating loss is not higher than 2%, the pH range is between 7.0-8.0, the acetone insoluble content is lower than 0.5%, and the dispersant one is an anionic dispersant, wetting agent The wet agent is a surfactant with an HLB value between 8.4 and 8.6, and the second dispersant is prepared by uniformly mixing a lignin dispersant and a carboxylate dispersant at a weight ratio of 3:2.4.

[0054] Step 2, adding the diuron active drug into a pulverizer for pulverization to obtain diuron ingredients with a particle size of 42um for use;

[0055] Step 3. Diuron ingredients,...

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Abstract

The invention discloses a production method for a water dispersible granule of diuron. The production method comprises the following steps: step 1, weighing the following raw materials in parts by weight: 550-650 parts of diuron technical, 55-65 parts of corn flour, 35-45 parts of a dispersing agent I, 12-20 parts of a wetting agent and 6-10 parts of a dispersing agent II; and step 2, adding the diuron technical into a crusher for crushing to obtain a diuron ingredient with a particle size of 38-44 microns for later use. By selecting a novel auxiliary agent, the granulation compactness of components of the diuron granule is improved, the redispersibility of the granule is improved, the surface energy of water is reduced, the diuron granule can be wetted by water, the diuron granule can bedispersed in the water to form stable turbid liquid, the suspension rate of the diuron granule is increased by 4%, and diuron liquid has good wettability and can be spread on the surfaces of plant leaves and insects so as to fully exert efficacy and improve the effect of a diuron granule product.

Description

technical field [0001] The invention relates to the technical field of diuron production, in particular to a production method of diuron water-dispersible granules. Background technique [0002] Diuron is a substitute urea herbicide. Diuron is a systemic herbicide. The pure product is a colorless crystalline solid with a melting point of 158-159°C. It is easily soluble in hot alcohol and has a solubility of 5.3 in acetone at 27°C. %, slightly soluble in ethyl acetate, ethanol and hot benzene, insoluble in water, the solubility in water is 42ppm at 25°C, low solubility in hydrocarbons, stable to oxidation and hydrolysis, water dispersible granules are also called dry flowable agent , Water-suspendable granules, after entering water, disintegrate automatically and disperse into a suspension. It is a new dosage form developed on the basis of wettable powder and suspending agent. It has good dispersibility, high suspension rate and good stability. , Easy to use and so on. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/14A01N47/30A01P13/00
CPCA01N25/14A01N47/30
Inventor 沈龙朱张操晶晶李波张本富崔永辉张晶晶刘开政
Owner ANHUI GUANGXIN AGROCHEM
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