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Water dispersible granule and anhydrous preparation technology thereof

A technology of dispersible particles and dispersants, which is applied in the direction of biocides, biocides, animal repellents, etc., can solve the problems of endangering human health, environmental pollution, and high cost of use, and achieve small environmental pollution, reduce environmental pollution, and save energy. The effect of packaging

Inactive Publication Date: 2016-09-28
成都科利隆生化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of environmental pollution, harm to human health and high use cost in the prior art and develop a high-content, environmentally friendly, water-dispersible granule with high utilization rate

Method used

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  • Water dispersible granule and anhydrous preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: 80% cyromazine water-dispersible granules

[0035] Weigh 81% of cyromazine powder, wetting agent sodium lauryl sulfate 2%, dispersant 8906 naphthalene sulfonate 3%, sodium lignosulfonate 2%, disintegrant sodium sulfate 3%, granulate Glucose 5%, anti-foaming agent isooctyl alcohol 0.1%, anti-caking agent 0.1%, carrier kaolin supplemented to 100%; cyromazine and other additives except anti-caking agent were placed in a gravity-free mixer according to the formula ratio Mix in medium for 20 minutes, then put the mixture into the twin-screw mixer (I), and pulverize it through the airflow mill while mixing to reach a particle size of more than 1000 mesh, collect it through a cyclone separator and a bag filter, and finally mix it in a double-helix mixer. Mix again in machine (II) for 30 minutes to obtain uniform mother powder. Accurately weigh a certain amount of parent powder, heat and soften in a cyclone, pour the material into an extrusion granulator to granu...

Embodiment 2

[0036] Embodiment 2: 40% acetamiprid water-dispersible granules

[0037] Weigh 40.5% of acetamiprid raw powder, 5% of wetting agent octylsulfosuccinate sodium salt, 7% of dispersant naphthalenesulfonate formaldehyde condensate, 3% of lignosulfonate calcium salt, and 10% of disintegrating agent sodium sulfate %, granulating agent fructose 10%, defoamer isooctyl alcohol 0.2%, anti-caking agent 0.3%, carrier kaolin is supplemented to 100%; acetamiprid and other additives except anti-caking agent are added to no Mix in a gravity mixer for 20 minutes, then put the mixture into a double-screw mixer (I), and pulverize it through an airflow mill while mixing to reach a particle size of more than 1000 mesh, collect it through a cyclone separator and a bag filter, and finally Mix again for 30 minutes in the twin-screw mixer (II) to obtain a uniform mother powder. Accurately weigh a certain amount of parent powder, heat and soften in a cyclone, pour the material into an extrusion granul...

Embodiment 3

[0038] Embodiment 3: 37% difenoconazole water dispersible granule

[0039] Weigh 37.2% of the original powder of difenoconazole, 4% of sodium lauryl sulfate as a wetting agent, 3% of naphthalenesulfonate formaldehyde condensate as a dispersant, 4% of sodium lignosulfonate, and 20% of urea as a disintegrating agent , granulating agent glucose 13%, defoaming agent organic silicone 0.3%, anti-caking agent 0.3%, carrier diatomaceous earth to 100%, difenoconazole and other additives except anti-caking agent according to the formula The ratio is mixed in a gravity-free mixer for 20 minutes, and then the mixture is put into a double-screw mixer (I). While mixing, it is pulverized by a jet mill to reach a particle size of more than 1000 mesh, and is collected by a cyclone separator and a bag filter. , and finally mixed again in the twin-screw mixer (II) for 30 minutes to obtain a uniform mother powder. Accurately weigh a certain amount of parent powder, heat and soften in a cyclone, ...

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Abstract

The invention discloses a water-dispersible granule, which comprises the following components in weight ratio: active ingredient 5%-80%, wetting agent 2%-5%, dispersant 2%-7%, disintegrant 3%- 20%, granulating agent 5%-25%, defoamer 0.1%-0.3%, anti-caking agent 0.1%-0.5%, and filler balance. In the anhydrous preparation process of the water-dispersible granules of the present invention, no water is added during the processing, and some active ingredients of original medicines sensitive to moisture can be made into water-dispersible granules by this method. The invention overcomes the disadvantages of the suspending agent and the wettable powder, and has the advantages of environmental protection and low use cost. The method reduces the pollution to the environment, and reduces the cost of farmers' use, and is a major trend in the development of pesticide formulations at present.

Description

technical field [0001] The invention relates to a water-dispersible granule and its anhydrous preparation process. Background technique [0002] The use of traditional pesticides, mainly emulsifiable concentrates and powders, played an irreplaceable role in preventing pests and diseases, capturing agricultural harvests, and ensuring people's lives when the productivity level was not very high in the past. However, with the improvement of people's living standards, the quality requirements for agricultural products have also increased correspondingly, and the international community's demands for ecological environment protection and sustainable development have also increased accordingly. In contrast, the disadvantages of the application of emulsifiable concentrates and powders obvious. And gradually change to environmentally friendly dosage forms. [0003] Water-dispersible granules are a new type of dosage form. In recent years, research institutes and enterprises at hom...

Claims

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Application Information

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IPC IPC(8): A01N25/14A01N43/68A01N47/40A01N43/653A01N43/50A01N43/40A01N37/46A01N43/84A01N43/90A01N47/36A01P13/00
CPCA01N25/14A01N37/46A01N43/40A01N43/50A01N43/653A01N43/68A01N43/84A01N43/90A01N47/36A01N47/40
Inventor 袁彩宾吴培军周璐周斌曹希敏张玉坤
Owner 成都科利隆生化有限公司
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