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2, 4-dichlorphenoxyacetic acid butyl ester water emulsion and preparation method thereof

A technology of butyl dichlorophenoxyacetate and water emulsion, applied in 2 fields, can solve problems such as polluting the environment, easy to catch fire, explosion, etc., and achieve the effects of reducing production cost, reducing toxicity, and reducing use cost

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

There are unsafe factors such as easy fire, explosion, toxicity, and environmental pollution. Therefore, it is urgent to develop new dosage forms that are environmentally friendly and safe.

Method used

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  • 2, 4-dichlorphenoxyacetic acid butyl ester water emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 20kg of 2,4-dichlorophenoxybutyl acetate, 10kg of xylene, 10kg of mineral spirits, 6kg of epoxy ethylene oxide propylene block copolymer, 0.3kg of polyvinyl alcohol, 2kg of ethylene glycol, and 0.2 kg of defoamer. kg, make up 100kg with deionized water. The preparation method is:

[0034] (1) Preparation of oil phase: Add 2,4-dichlorophenoxyethyl to butyl ester, xylene, solvent naphtha, ethylene oxide propylene block copolymer, etc. into the oil phase preparation kettle, stir Mix and dissolve to make a homogeneous oil phase.

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

[0036] (3) Preparation of 2,4-dichlorophenoxyacetic acid water emulsion: add the prepared oil phase (or water phase) to the water emulsion preparation kettle equipped with high-speed shearing machine (or high-speed stirring) ...

Embodiment 2

[0038] Weigh 2,4-dichlorophenoxybutyl butyl ester 30kg, xylene 15kg, three (1-phenylethyl) phenol polyoxyethylene ether phosphate triethanolamine salt 8kg, polyvinyl alcohol 0.2kg, propylene glycol 1.0kg, organic 0.1kg of silicon defoamer and 100kg of deionized water. The above raw materials were formulated into 30% 2,4-dichlorophenoxyacetic acid butyl ester aqueous emulsion according to the emulsion-in-water preparation method of Example 1.

Embodiment 3

[0040] Weigh 50kg of 2,4-dichlorophenoxybutyl acetate, 6kg of ethylene oxide propylene block copolymer, 5kg of nonylphenol polyoxyethylene ether, 0.1kg of polyvinyl alcohol, 1.2kg of glycerol, silicone Defoamer 0.1kg, deionization make up 100kg. The above raw materials were prepared into a 50% 2,4-dichlorophenoxyacetic acid butyl emulsion in water 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 2, 4-dichlorphenoxyacetic acid butyl ester water emulsion and a preparation method thereof. The water emulsion comprises the following components in parts by mass: 1-50 parts of 2, 4-dichlorphenoxyacetic acid butyl ester, 0-20 parts of solvent, 0.2-15 parts of emulsifier, 0.1-6 parts of thickener, 0-8 parts of antifreeze agent, 0.1-1.5 parts of defoaming agent, 0-3 parts of antimicrobial agent, an appropriate amount of pH value regulator and the balance of deionized water. By adopting the invention, dicotyledonous weeds, cyperus difformis and certain malignant weeds can be prevented or killed off, and the water emulsion is widely applied to paddy field and wheat field and has good control effect on annual and perennial weeds. The invention lowers the manufacturing cost and use cost, and reduces the toxicity to operators, storage and transportation personnel and users in the production, storage, transportation and use processes. Thus, the water emulsion is an environment-friendly product with high safety.

Description

technical field [0001] The invention relates to a pesticide preparation and a preparation method thereof, in particular to a 2,4-dichlorophenoxybutyl acetate emulsion in water 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] 2,4-Dichlorophenoxybutyl acetate structural formula: [0004] [0005] Physical and chemical properties: colorless oily liquid. The freezing point is 9°C, the boiling point is 146-147°C (133Pa), the relative density is 1.2428, and the flash point is 48°C. Soluble in organic solvents, difficult to dissolve in water. Strong volatility, stable to acid and heat, decomposes into 2,4-D...

Claims

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Application Information

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IPC IPC(8): A01N39/04A01N25/04A01P13/00
Inventor 王玉亭宋协阳段未克董继波
Owner 威海韩孚生化药业有限公司
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