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Synergist special for water suspending agent and preparation method thereof

A technology of water suspension and synergist, which is applied in botany equipment and methods, herbicides and algicides, chemicals for biological control, etc., can solve the problem of poor drug efficacy, serious environmental pollution, human Great damage and other problems, to achieve the effect of good market economic prospects, simple process, and improved effect

Inactive Publication Date: 2020-07-28
南京拓际生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As we all know, traditional pesticide formulations are mainly emulsifiable concentrates and wettable powders. Organic solvents such as xylene and methanol are used in the emulsifiable concentrates. Long-term use of such solvents is very harmful to humans and serious environmental pollution. WP processing and During the use process, the dust flying is serious, and it will also cause great harm to people.
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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  • Synergist special for water suspending agent and preparation method thereof
  • Synergist special for water suspending agent and preparation method thereof
  • Synergist special for water suspending agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The special synergist for water suspension concentrate of the present embodiment is prepared according to the following steps:

[0024] 134.17g of trimethylolpropane and 20.97g of Zn were dropped into the 20L autoclave 3 [Co(CN) 6 ] 2 ·C 4 h 10 O, seal the reactor. Replace the reactor with nitrogen three times, stir and heat up to 85°C, vacuumize and continue to heat up, under the reaction conditions of 140°C and 0.1MPa, slowly add 6607.8g of ethylene oxide, and react for 1 hour. Then, under the reaction conditions of 140° C. and 0.1 MPa, 8712 g of propylene oxide was slowly added and reacted for 1 hour. A special synergist for pesticide aqueous suspension was obtained, named KY-E001.

[0025] Gel Permeation Chromatography (GPC) was adopted, and polystyrene was used as a standard, and the relative molecular weight of the prepared special synergist for water suspension was determined to be 15900.

Embodiment 2

[0027] The special synergist for water suspension concentrate of the present embodiment is prepared according to the following steps:

[0028] Put 670.85g trimethylolpropane and 69.9g Zn into the 20L autoclave 3 [Co(CN) 6 ] 2 ·C 4 h 10 O, seal the reactor. Replace the reactor with nitrogen three times, stir and heat up to 85°C, vacuumize and continue to heat up, under the reaction conditions of 145°C and 0.2MPa, slowly add 7929.36g of ethylene oxide, and react for 1 hour. Then, under the reaction conditions of 145° C. and 0.2 MPa, 10454 g of propylene oxide was slowly added and reacted for 1 hour. A special synergist for pesticide aqueous suspension was obtained, named KY-E002.

[0029] Gel Permeation Chromatography (GPC) was adopted, and polystyrene was used as a standard, and the relative molecular weight of the prepared special synergist for water suspension was determined to be 19180.

Embodiment 3

[0031] The special synergist for water suspension concentrate of the present embodiment is prepared according to the following steps:

[0032] Put 680.75g ethylenediamine pentaerythritol and 69.9g Zn into the 20L autoclave 3 [Co(CN) 6 ] 2 ·C 4 h 10 O, seal the reactor. Replace the reactor with nitrogen three times, stir and heat up to 85°C, vacuumize and continue to heat up, under the reaction conditions of 145°C and 0.2MPa, slowly add 7929.36g of ethylene oxide, and react for 1 hour. Then, under the reaction conditions of 145° C. and 0.2 MPa, 10454 g of propylene oxide was slowly added and reacted for 1 hour. A special synergist for pesticide aqueous suspension was obtained, named KY-E003.

[0033] Gel Permeation Chromatography (GPC) was adopted, and polystyrene was used as a standard, and the relative molecular weight of the prepared special synergist for water suspension was determined to be 18594.

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Abstract

The invention provides a preparation method of a synergist special for a water suspending agent. The method comprises the step of synthesizing the following raw materials in parts by mole: 1-12 partsof an initiator; 150 to 230 parts of ethylene oxide; 150 to 230 parts of epoxypropane; and 0.03 to 0.4 part of a double metal cyanide complex catalyst. The synergist has the advantages of simple technique, simple and safe synthesis technique and wide application range, and obviously enhances the effect on a suspending agent.

Description

technical field [0001] The invention belongs to the field of pesticide preparations, and in particular relates to a special synergist for water suspensions and a preparation method thereof. Background technique [0002] As we all know, traditional pesticide formulations are mainly emulsifiable concentrates and wettable powders. Organic solvents such as xylene and methanol are used in the emulsifiable concentrates. Long-term use of such solvents is very harmful to humans and serious environmental pollution. WP processing and During use, the dust flying is serious, and it is also harmful to people. With the strengthening of human safety awareness and environmental protection 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N41/10A01N47/38A01N47/02A01P13/00A01P7/04A01P3/00
CPCA01N25/04A01N41/10A01N47/02A01N47/38
Inventor 何华雄
Owner 南京拓际生物科技有限公司
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