Pendimethalin emulsion in water and preparation method thereof

A technology of pendimethalin and emulsion in water, which is applied in botany equipment and methods, biocide, biocide, etc., can solve the problems of toxicity and flammability, and reduce the cost of use, toxicity and production cost Effect

Inactive Publication Date: 2011-05-11
威海韩孚生化药业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The emulsifiable concentrate contains a large amount of organic solvents, which are flammable, explosive, and toxic. However, our country has included the formulation of emulsifiable concentrate in the list of elimination.

Method used

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  • Pendimethalin emulsion in water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh pendimethalin former medicine 10kg, solvent xylene 5kg, emulsifier epoxy ethylene oxide propylene block copolymer 2kg, dispersion thickener polyvinyl alcohol 0.3kg, antifreeze agent ethylene glycol 1kg, defoamer Appropriate amount, deionized water makes up 100kg. Preparation:

[0034] 1) Preparation of oil phase: Put pendimethalin technical substance, xylene, ethylene oxide propylene block copolymer, etc. into an oil phase preparation kettle, stir, mix and dissolve to form a uniform oil phase.

[0035] 2) Preparation of water phase: Add deionized water, polyvinyl alcohol, ethylene glycol, etc. into the water phase preparation kettle, stir, mix, dissolve, and wait until it becomes a uniform water phase.

[0036] 3) Preparation of pendimethalin water-emulsion: put the oil phase (or water phase) prepared above into the water-emulsion preparation kettle equipped with a high-speed shearing machine (high-speed stirring), and in a high-speed shear ( Stirring), the abov...

Embodiment 2

[0037] Weigh pendimethalin former drug 20kg, xylene 5kg, solvent naphtha 5kg, tris(1-phenylethyl)phenol polyoxyethylene ether phosphate triethanolamine salt 8kg, polyvinyl alcohol 0.2kg, ethylene glycol 1.5kg , an appropriate amount of defoamer, and deionized water to make up to 100kg. The above raw materials were formulated into 20% pendimethalin water emulsion according to the preparation procedure of the water emulsion in Example 1.

Embodiment 3

[0039] Weigh 30kg of pendimethalin, 15kg of xylene, 10kg of tri(1-phenylethyl)phenol polyoxyethylene ether phosphate triethanolate, 1kg of gum arabic, 1kg of propylene glycol, appropriate amount of defoamer, deionized water Make up 100kg. The above raw materials were prepared into a 30% pendimethalin water emulsion according to the preparation method of the water emulsion in Example 1.

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Abstract

The invention relates to a pesticide preparation and a preparation method thereof, in particular to a pendimethalin emulsion in water and a preparation method thereof. The pendimethalin emulsion in water comprises the following components in percent by mass: 1-45 parts of pendimethalin, 1-20 parts of solvent, 1-18 parts of emulsifier, 0.1-6 parts of thickening agent, 0-5 parts of antifreeze, 0-3 parts of antimicrobial, 0.1-0.5 portion of defoamer, a proper volume of pH regulator and 100 parts of deionized water. The invention relates to a selective herbicide, which is used for preventing and removing annual Gramineae weeds, and applied after planting grain plants, corns and rice and before seedling, or applied in shallow soil for broad beans, cottons, peanuts and soybeans, and applied before seedling or transplanting in vegetable fields; moreover, the pendimethalin emulsion in water can also be used for preventing and removing tobacco and inhibiting buds. The pendimethalin emulsion in water does not use or uses less organic solvent, which lowers the manufacture cost and use cost, reduces toxicity to operators, storage and transportation personnel, and users during the production, storage, transportation and use processes, and is an environmental protective product with high safety.

Description

technical field [0001] The invention relates to a pesticide preparation and a preparation method thereof, in particular to a pendimethalin aqueous emulsion and a preparation method thereof. Background technique [0002] With the gradual enhancement of people's awareness of environmental protection, the demand for high-efficiency, low-toxicity, and low-residue environmentally friendly pesticides is increasing. Pesticide scientists are working hard to develop new varieties and new formulations of high-efficiency, low-toxicity, and environmentally friendly pesticides. [0003] Pendimethalin structural formula: [0004] [0005] Physical and chemical properties: orange-yellow crystalline solid, melting point 54-58°C, boiling point 300°C, density 1.17, solubility (25°C): 0.275mg / L in water, easily soluble in organic solvents such as acetone and xylene. [0006] Toxicity: Acute oral LD503956mgTC / kg for rats, acute percutaneous LD502200mg / kg for rabbits. [0007] Uses: Selecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N33/18A01N25/04A01P13/00
Inventor 王玉亭宋协阳段未克张士文
Owner 威海韩孚生化药业有限公司
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