A kind of thickening synergistic emulsifier and preparation method thereof

A technology of emulsifier and preparation process, which is applied in the preparation of thickening and synergistic emulsifiers, and in the field of thickening and synergistic emulsifiers, which can solve the problem of dust flying in wettable powder processing, serious environmental pollution, and poor drug efficacy, etc. problems, to achieve the effect of prolonged shelf life, long residence time, and small droplet particles

Active Publication Date: 2016-03-16
长兴德源环保助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Organic solvents such as xylene and methanol are used in the emulsifiable concentrate. The long-term use of such solvents is very harmful to humans and also seriously pollutes the environment. During the processing and use of wettable powder, the dust is very serious, and it is also harmful to humans.
With the strengthening of human safety awareness and environmental awareness, the use of organic solvents has been gradually restricted or banned. In recent years, the pesticide industry has advocated the use of environmentally friendly solvents and the development of water-based formulations instead of traditional formulations. In water-based pesticide formulations such as water Today, with the vigorous development of emulsions, suspensions, and water formulations, it is found that the efficacy of water-based pesticides is not very good. This is because there is a waxy layer that is insoluble in water but soluble in organic solvents on the surface of many plants and pests. , so the water-based formulation pesticide needs to add other synergists to improve the efficacy and reduce the dosage of the formulation

Method used

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  • A kind of thickening synergistic emulsifier and preparation method thereof
  • A kind of thickening synergistic emulsifier and preparation method thereof
  • A kind of thickening synergistic emulsifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A thickening synergistic emulsifier embodiment 1 of the present invention comprises the following components, and each component is respectively by weight:

[0031]

[0032] Wherein, the isocyanate is a mixture of isophorone diisocyanate (IPDI) and diphenylmethane diisocyanate (MDI), and the vegetable oil is a mixture of peanut oil, rapeseed oil and corn oil.

[0033] The preparation method of this kind of thickening and synergistic emulsifier is as follows: add castor oil into the reaction kettle, then add potassium hydroxide, stir evenly, heat up to 130°C, then add ethylene oxide, and keep warm for 1 hour while stirring , then lower the temperature to 73°C, add sulfamic acid and urea to carry out the sulfonation reaction, the degree of sulfonation is controlled at 65-75%, the reaction time is 2h, then slowly add isocyanate dropwise, and continue to stir, after the dropwise addition is completed, the reaction temperature is 75°C Under the condition of heat preservat...

Embodiment 2

[0034] A thickening synergistic emulsifier embodiment 2 of the present invention comprises the following components, and each component is respectively by weight:

[0035]

[0036] Among them, the isocyanate is hexamethylene diisocyanate (HDI). Vegetable oil methyl ester is a mixture of methyl laurate, methyl palmitate, methyl oleate and methyl linoleate.

[0037]The preparation method of this kind of thickening and synergistic emulsifier is as follows: add castor oil in the reaction kettle, then add sodium hydroxide, after stirring evenly, heat up to 115°C, then add ethylene oxide, and keep warm while stirring for 1.5 h, then lower the temperature to 60°C, add sulfamic acid and urea to carry out sulfonation reaction, the sulfonation degree is controlled at 50-60%, the reaction time is 4.5h, then slowly add isocyanate dropwise, and continue to stir, after the dropwise addition is completed Heat preservation reaction at 55°C for 1.5h, and finally raise the temperature to 12...

Embodiment 3

[0038] A thickening synergistic emulsifier embodiment 3 of the present invention comprises the following components, and each component is respectively by weight:

[0039]

[0040]

[0041] Wherein, the isocyanate is isophorone diisocyanate (IPDI), and the vegetable oil is a mixture of palm oil, coconut oil, peanut oil, rapeseed oil, and rice bran oil.

[0042] The preparation method of this kind of thickening and synergistic emulsifier is as follows: add castor oil into the reaction kettle, then add potassium hydroxide, stir evenly, heat up to 140°C, then add limonene and abietic acid, and pass through epoxy Ethane, keep stirring while keeping warm for 2 hours, then lower the temperature to 80°C, add sulfamic acid and urea for sulfonation reaction, after 0.5 hours of reaction, add ethanolamine to continue the reaction for 3 hours, control the degree of sulfonation at 70-80%, then raise the temperature to 150°C, add hexanoic acid, stir vigorously for 10 minutes, then slo...

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Abstract

A thickening synergistic emulsifier is disclosed. The thickening synergistic emulsifier comprises 40-50 parts by weight of castor oil, 10-25 parts by weight of ethylene oxide, 0.1-0.2 part by weight of potassium hydroxide or sodium hydroxide, 5-20 parts by weight of sulfamic acid, 1-2 parts by weight of urea, 20-45 parts by weight of isocyanate and 10-50 parts by weight of vegetable oil or vegetable oil methyl ester, and can also comprise 15-20 parts by weight of hexanoic acid, 5-10 parts by weight of limonene, 3-5 parts by weight of rosin acid and 8-12 parts by weight of ethanolamine. A preparing method of the thickening synergistic emulsifier is also disclosed. The emulsifier is suitable for avermectins emulsifiable oil and has good adhesion and dispersibility. Liquid particles formed by spraying after pesticides are added are smaller, effective components are more uniform, the adhesion force on crop surfaces is higher, and the residence time is longer, so that the using amount of the pesticides is largely reduced, and the efficacy is significantly improved.

Description

technical field [0001] The invention belongs to the technical field of pesticide adjuvants, relates to a thickening and synergistic emulsifier, and also relates to a preparation method of the thickening and synergistic emulsifier. Background technique [0002] As we all know, the traditional pesticide formulations are mainly emulsifiable concentrate and wettable powder. Insects and mites have contact and stomach poisoning effects and weak fumigation effect, no systemic effect. However, it has a strong penetrating effect on the leaves, can kill pests under the skin, and has a long residual effect. It does not kill eggs. Its mechanism of action is different from general insecticides in that it interferes with neurophysiological activities, stimulates the release of r-aminobutyric acid, and r-aminobutyric acid has an inhibitory effect on the nerve conduction of arthropods, and acarids, nymphs and insects are related to The larvae will appear paralyzed after being in contact ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/30A01N25/04A01N43/90A01P7/04
Inventor 王德新叶林峰
Owner 长兴德源环保助剂有限公司
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