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Cupric hydroxide dry suspending agent and preparation method thereof

A technology of copper hydroxide and dry suspending agent, applied in the directions of botanical equipment and methods, biocides, disinfectants, etc., can solve the problem of inability to protect water storage in leaves, inability to protect young leaves against ultraviolet rays, and inability to evenly cover, etc. problems, to avoid burns and phytotoxicity, easy absorption, good suspension rate

Inactive Publication Date: 2015-07-08
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the film formed by sodium alginate oligosaccharides can only be formed in the competition of specific proteins. It only plays a role in plant nutrition mediation, and cannot evenly cover the surface of crop leaves. It cannot protect young leaves from ultraviolet rays, and cannot block other aids. The organic solvent in the agent will not damage the young leaves, nor can it protect the water storage in the leaves.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The embodiment of the present invention also provides the preparation method of the above-mentioned copper hydroxide dry suspension, which includes the following steps: adding copper hydroxide powder, dispersant, wetting agent, disintegrant, binder, and adhesive in a batching device in sequence , film-forming agent, carrier and water, and stir evenly to form a mixture; coarsely pulverize the mixture in a primary sand mill with a high-speed shear, and then enter a secondary sand mill for fine grinding until it reaches 1-4 μm After adding the granulation aid, enter the pressure spray drier for spraying and granulation to form the dry suspension of copper hydroxide. The inlet temperature of the spray drier is preferably 130 ° C ~ 180 ° C, and the outlet temperature is preferably 50°C~90°C.

[0022] The above-mentioned copper hydroxide dry suspension concentrate is generally used as an agricultural fungicide. The fungicide is in the form of dry suspension, with high finene...

Embodiment 1

[0026] The present embodiment gets the former medicine of copper hydroxide containing 10.5 grams of active ingredient, 20 grams of urea, 4 grams of sodium lauryl sulfate, 15 grams of lignosulfonate, 4 grams of polycarboxylate, 8 grams of naphthalenesulfonate , 4 grams of polyvinylpyrrolidone, 2 grams of xanthan gum, 10 grams of monosaccharides, 3 grams of acrylic acid ester polymers, 100 grams of kaolin, and stir evenly in the batching tank; Coarse pulverization in the middle, then enter the secondary sand mill for fine grinding, after grinding to 0.5~3μm, add granulation aids, and then carry out pressure spray drying and granulation. The inlet temperature of the spray dryer is 130°C, and the outlet The temperature is 50°C.

[0027] After inspection, the active ingredient content is 10.4%, the pH is 9.5, the moisture content is ≤1.0%, the fineness (through 45μm) is ≥100%, the suspension rate is ≥90%, the persistent foaming property (1min) is ≤25ml, and the wetting time is ≤60s...

Embodiment 2

[0029]The present embodiment gets the former medicine of copper hydroxide containing 25.5 grams of active ingredients, 20 grams of urea, 4 grams of sodium lauryl sulfate, 10 grams of lignosulfonate, 4 grams of polycarboxylate, 6 grams of naphthalenesulfonate , 3.5 grams of polypropionic acid resin, 2.5 grams of xanthan gum, 10 grams of monosaccharides, 3 grams of acrylic acid ester polymers, 100 grams of kaolin, and stir evenly in the batching tank; Coarsely pulverize in the middle of the dryer, then enter the secondary sand mill for fine grinding, grind to 0.5~3μm, add granulation aids, and then enter the pressure spray drying and granulation. The inlet temperature of the dryer is 130°C, and the outlet temperature is 50°C.

[0030] After inspection, the active ingredient content is 25.4%, the pH is 9.5, the moisture content is ≤1.0%, the fineness (through 45μm) is ≥100%, the suspension rate is ≥90%, the persistent foaming property (1min) is ≤25ml, and the wetting time is ≤60s...

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Abstract

The invention relates to a cupric hydroxide dry suspending agent and a preparation method thereof. The cupric hydroxide dry suspending agent comprises the following components in percentage by weight: 10-80% of cupric hydroxide powder, 5-30% of dispersing agent, 1-5% of wetting agent, 1-20% of disintegrant, 1-10% of bonding agent, 1-5% of adhesive and 1-5% of film former. The preparation components of the cupric hydroxide dry suspending agent can be effectively and uniformly attached to the crop surface and form a compact protective film on leaves; and thus, the cupric hydroxide dry suspending agent has the advantages of rainfall erosion resistance and high drug effect durability, and can efficiently prevent and remove bacterial diseases and fungus diseases of crops. The cupric hydroxide dry suspending agent can be used as an effective component of a copper preparation to effectively avoid the defect of partial scorching and chemical injury of crops since the Bordeaux mixture and other cupric hydroxide preparations can not easily control the copper ion distribution.

Description

technical field [0001] The invention relates to the technical field of agricultural sterilization, in particular to a copper hydroxide dry suspension fungicide and a preparation method thereof. Background technique [0002] Copper hydroxide preparation is a protective broad-spectrum fungicide, which can prevent and treat fungal and bacterial diseases at the same time, and has both protective and therapeutic effects on pathogenic bacteria. In addition, copper preparations have the characteristics of low toxicity, no pollution, and good environmental compatibility, so they are favored and used as excellent fungicides for the production of green food and organic fruits. [0003] At present, the common dosage forms of copper hydroxide preparations mainly include wettable powders, dry granules, suspension concentrates, and water-dispersible granules. It is a heavy metal ion itself, and its dispersibility in water is not good. After spraying the drug, it is easy to condense on th...

Claims

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Application Information

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IPC IPC(8): A01N59/20A01N25/14A01P1/00A01P3/00
Inventor 王幸骆风华任太军李欧燕王芳王文忠曹明章
Owner SHENZHEN NOPOSION AGROCHEM
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