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Trifluralin emulsion in water and preparation method thereof

A water emulsion, trifluralin technology, applied in the fields of botanical equipment and methods, biocides, biocides, etc., can solve the problems of flammability, explosion, toxicity, etc., to reduce toxicity, production costs, and use. cost effect

Inactive Publication Date: 2011-07-20
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

However, the emulsifiable concentrate contains a large amount of organic solvents, which are flammable, explosive, toxic and other unsafe factors.

Method used

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  • Trifluralin emulsion in water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 10kg of trifluralin, 10kg of xylene, 5kg of emulsifier epoxy ethylene oxide propylene block copolymer, 0.5kg of dispersing thickener polyvinyl alcohol, 2.0kg of antifreeze ethylene glycol, and 0.1kg of defoamer , deionized water to make up 100kg. Its preparation method:

[0032] 1) Preparation of oil phase

[0033] Put trifluralin technical substance, xylene, ethylene oxide propylene block copolymer into an oil phase preparation kettle, stir, mix and dissolve. Make it a homogeneous oily phase.

[0034] 2) Preparation of the aqueous phase

[0035] Put deionized water, polyvinyl alcohol, ethylene glycol, silicone defoamer, etc. into the water phase preparation kettle, stir, mix and dissolve to form a uniform water phase.

[0036] 3) Preparation of trifluralin aqueous emulsion

[0037] Put the above-mentioned prepared oil phase (or water phase) into the trifluralin preparation kettle equipped with a high-speed shear, and add the above-mentioned prepared water ph...

Embodiment 2

[0039] Take by weighing trifluralin former medicine 20kg, solvent xylene 10kg, solvent naphtha 10kg, emulsifier three (1-phenylethyl) phenol polyoxyethylene ether phosphate triethanolamine salt 6kg, dispersion thickener polyvinyl alcohol 0.3kg, 1.2kg of antifreeze ethylene glycol, 0.1kg of silicone defoamer, and 100kg of deionized water were added. The above-mentioned raw materials were prepared into 20% trifluralin water emulsion according to the preparation method of water emulsion in Example 1.

Embodiment 3

[0041] Weigh 30kg of trifluralin, 20.0kg of xylene, 15.0kg of solvent oil, 10.0kg of ethylene oxide propylene block polymer, 0.3kg of polyvinyl alcohol, 1.0kg of ethylene glycol, and silicone defoamer 0.1kg, deionized water to make up 100kg. The above raw materials were formulated into 30% trifluralin water emulsion according to the preparation method of 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 trifluralin emulsion in water and a preparation method thereof. The trifluralin emulsion in water comprises the following components in part by mass: 0.5 to 48 parts of trifluralin, 1 to 20 parts of solvent, 1 to 16 parts of emulsifier, 0.1 to 5 parts of thickening agent, 0 to 8 parts of antifreezing agent, 0.1 to 1.6 parts of defoaming agent, 0 to 3 parts of antimicrobial agent, a proper amount of pH value regulator, and the balance of deionized water. The trifluralin emulsion in water is a selective pre-emergence soil treatment agent, and is mainly absorbed through coleoptiles and hypocotyls of weeds. The trifluralin emulsion in water has the effect on gramineous and partial small-seed broadleaf weeds, and is applicable to cotton, soybeans, rape, peanuts, potatoes and the like. The trifluralin emulsion in water does not contain or rarely contains an organic solvent, so the manufacturing cost and use cost are reduced, and the toxicity produced to operators, storers and transporters, and users is reduced in the process of production, storage and transportation; and the trifluralin emulsion in water is a product which is environmental-friendly and has high safety.

Description

technical field [0001] The invention relates to a pesticide preparation and a preparation method thereof, in particular to a trifluralin aqueous emulsion and a preparation method thereof. Background technique [0002] As people's awareness of environmental protection is getting stronger and they are eager for high-efficiency, low-toxicity, low-residue, and environment-friendly pesticides, pesticide scientists are working day and night to develop new varieties and formulations of high-efficiency, low-toxicity, and environment-friendly pesticides. [0003] Trifluralin chemical name: 2,6-dinitro-N,N-di-n-propyl-4-trifluoromethylaniline. [0004] Structural formula: [0005] [0006] Toxicity: Low toxicity to humans and animals. Acute oral LD50 for rats > 10,000 mg / kg, acute percutaneous LD50 for rabbits > 20,000 mg / kg. Low toxicity to birds, high toxicity to fish. [0007] Features: easy to be volatile, easy to photolyze, water solvent is very small, not easy to mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N33/18A01P13/02
Inventor 王玉亭宋协阳董继波张士文
Owner 威海韩孚生化药业有限公司
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