Dry pesticide suspension agent as well as preparation and application methods thereof

A dry suspension and pesticide technology, applied in the field of pesticide preparations, can solve problems such as difficulty in applying low-capacity or ultra-low-capacity sprays, difficulty in preparing liquid preparations, poor dispersion uniformity, etc., and achieves easy continuous production, easy metering and packaging , good fluidity effect

Inactive Publication Date: 2018-06-22
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of the physical and chemical properties of the active ingredients of some pesticides, it is difficult to prepare liquid preparations, and the existing solid dosage forms such as water-dispersible granules and wettable powders have very poor dispersion uniformity when diluted 30-50 times, and drug liquid separation is easy to occur. Problems such as layering, sedimentation, and clogged nozzles make it difficult to apply to low-volume or ultra-low-volume sprays

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Drop into 100 kilograms of water in the stirred tank of 200 kilograms, then drop into tricyclazole 50.0Kg in the stirred tank, wetting agent polyoxyalkylene oxide block copolymer 2.0Kg, dispersing agent alkyl naphthalene sulfonate sodium formaldehyde condensate 6.0 Kg, disintegrating agent ammonium sulfate 10Kg, binder sodium carboxymethyl cellulose 1 Kg, special additive for aircraft defense turpentine-based vegetable oil 4.0 Kg, defoaming agent organosiloxane 1.0 Kg, filler bentonite 16.0 Kg. After being uniformly mixed by a high-speed shearing machine, it is pulverized by a sand mill until the average particle size distribution D90 of the particles is less than 5 microns. Then the suspension slurry is pumped into a centrifugal spray dryer for granulation, the spray pressure is controlled at 4-6MPa, the inlet air temperature is controlled at 140°C, and the outlet air temperature is controlled at 60°C. After granulation, the material is screened by a sieving machine to...

Embodiment 2

[0029] Put 100 kg of water into a 400-kg stirred tank, then drop 180.0 Kg of tricyclazole into the stirred tank, 12.0 Kg of wetting agent sodium lauryl sulfate, 30.0 Kg of dispersant polyacrylic acid copolymer, and 15 Kg of disintegrating agent cornstarch , Adhesive polyvinylpyrrolidone 7.5 Kg, special additives for flight prevention castor oil alkoxylate 15.0 Kg, defoamer polyether 1.5 Kg, filler magnesium aluminum silicate 39.0Kg. After being uniformly mixed by a high-speed shearing machine, it is pulverized by a sand mill until the average particle size distribution D90 of the particles is less than 5 microns. Then the suspension slurry is pumped into a centrifugal spray dryer for granulation, the spray pressure is controlled at 4-6MPa, the inlet air temperature is controlled at 120°C, and the outlet air temperature is controlled at 70°C. After granulation, the material is screened by a sieving machine to obtain a dry suspension product with a particle size of 160-60 mesh a...

Embodiment 3

[0031] Put 100 kg of water into a 200 kg stirred tank, then put 70.0 Kg of tricyclazole into the stirred tank, 5.0 Kg of isomeric alcohol polyoxyethylene ether as a wetting agent, and 10.0 kg of EO / PO block polyether with a molecular weight of 10,000 as a dispersant Kg, disintegrant potassium chloride 3.0Kg, binder polyethylene glycol 2.0 Kg, special additives for aircraft defense polyols 8.0 Kg, defoamer C10-C20 saturated aliphatic carboxylate 0.5 Kg, filler activated clay 1.5 Kg. After being uniformly mixed by a high-speed shearing machine, it is pulverized by a sand mill until the average particle size distribution D90 of the particles is less than 5 microns. Then the suspended slurry is pumped into a centrifugal spray dryer for granulation, the spray pressure is controlled at 4-6MPa, the inlet air temperature is controlled at 150°C, and the outlet air temperature is controlled at 75°C. After granulation, the material is screened by a sieving machine to obtain a dry suspen...

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PUM

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Abstract

The invention discloses a dry pesticide suspension agent. The dry pesticide suspension agent is prepared from following components in percentage by mass: 50% to 90% of tricyclazole, 1% to 5% of wetting agent, 1% to 15% of dispersing agent, 1% to 10% of disintegrant, 1% to 5% of binder, 1% to 8% of fly defense special additives, 0% to 1% of defoamer, and the balance of filler. The dry pesticide suspension agent disclosed by the invention solves a problem that a high-content suspension agent is prone to crystallization and sedimentation during a normal storage process, avoids the defects of dustflying and long disintegration time in a dry granulation process, and has the advantages of small particle size, good dispersion, high suspension rate and the like. In the fly-proof application, compared with water-dispersible granules, the dry pesticide suspension agent has the advantages of anti-volatile, anti-drift, and no plugging effects. The adhesion of a drug dropping on the surface of a crop is good, and the application times are reduced. Compared with other granulation processes, a preparation process of the dry pesticide suspension agent disclosed by the invention has the advantagesthat continuous production is easy to realize and environmental protection is realized.

Description

technical field [0001] The invention relates to a pesticide dry suspension concentrate and belongs to the field of pesticide preparations. Background technique [0002] In the current and future agricultural production in my country, labor shortage has become one of the key factors restricting agricultural development. The use of drones for plant protection spraying has significant advantages such as accurate spraying, high operating efficiency, wide application range, less labor, water saving and chemical saving. [0003] With the rapid development of the agricultural plant protection UAV flying defense business, nearly ten million acres of farmland have been sprayed with plant protection UAVs every year. Mechanization and automation of pesticide application has played an important role, which can effectively save costs and improve the efficiency of prevention and control. [0004] At present, the total amount of dilution agent sprayed by conventional plant protection dro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01N25/14A01P3/00
CPCA01N25/14A01N43/90
Inventor 李鹏飞骆风华张龙张华东赵琳王高杨
Owner SHENZHEN NOPOSION AGROCHEM
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