Adhesive diquat dibromide synergist and preparation method thereof

A synergist, Diquat technology, applied in the field of pesticides, can solve the problems of short duration of drug effect, difficult to achieve, poor stability of drug solution dilution, etc., to prolong the duration of drug effect, solve the problem of severe foaming, long-lasting effect

Inactive Publication Date: 2018-04-06
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

[0005] (1) High foaming: Compounds with sodium sulfate groups have large foaming properties and are difficult to eliminate. It is difficult to meet the national requirements for 20-fold dilution of the foam height of FAO, and the use effect is not ideal.
[0006] (2) Poor wetting and spreading properties: Diquat water preparations prepared by the existing technology generally have no requirement for viscosity, and the wetting time is generally around 180s, and the wetting effect needs to be strengthened
[0007] (3) The synergistic effect is not significant: Some technologies use fatty alcohol polyoxyethylene ether sodium sulfate as a synergist, and the drug effect lasts for 2 weeks, and the drug effect lasts for a short time
[0008] (4) Poor resistance to extreme conditions: currently technically, Diquat preparations have a great influence on the efficacy in extreme environments, and the frost resistance and high temperature resistance need to be improved
[0009] (5) The dilution stability of the prepared drug solution is poor, and flocculation and precipitation are prone to occur, which affects the stability of product quality

Method used

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  • Adhesive diquat dibromide synergist and preparation method thereof
  • Adhesive diquat dibromide synergist and preparation method thereof
  • Adhesive diquat dibromide synergist and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The thickening type diquat synergist of the present embodiment is prepared according to the following steps:

[0044] (1) Add the polypropylene compound and the surfactant into the reaction vessel, stir and mix evenly at 70° C. to obtain the mixed solution 1;

[0045] (2) Add the dispersant, wetting agent and penetrating agent into the mixed solution 1 respectively, heat, stir and mix evenly to obtain the mixed solution 2;

[0046] (3) Add the pH adjuster to the mixed solution 2 in batches, stir to neutralize the reaction, after the reaction is complete, add the defoamer when it is cooled to 10°C, stir and mix evenly, that is, the viscosity-increased enemy of this embodiment is obtained. Grass booster.

[0047] The specific dosage of each raw material of this embodiment is shown in Table 1, wherein when the product in serial number 1 is prepared, the measured pH value is 6.9; when the product in serial number 2 is prepared, the measured pH value is 7.0; the product in se...

Embodiment 2

[0049] The difference between the viscosity-increasing diquat synergist in this example and Example 1 is that in step (3), a defoamer is added when cooling to 25°C.

[0050] The specific dosage of each raw material of this embodiment is as shown in Table 1, wherein when the product in serial number 6 is prepared, the measured pH value is 7.1; when the product in serial number 7 is prepared, the measured pH value is 7.0; the product in serial number 8 When the preparation is completed, the measured pH value is 7.2; when the preparation of the product in serial number 9 is completed, the measured pH value is 6.9; when the preparation of the product in serial number 10 is completed, the measured pH value is 7.0.

[0051] Selection and consumption (unit: kg) of each raw material in table 1 embodiment 1 and embodiment 2

[0052]

[0053]

[0054]

[0055] Note: If nothing is filled in the table, it means none.

[0056] In the above table, KY-R02 is sulfonate, product of J...

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Abstract

The invention provides an adhesive diquat dibromide synergist and a preparation method thereof, belongs to the technical field of pesticides, and aims at providing an adhesive diquat dibromide synergist with low foam, good mobility, safety and no pollution and the preparation method thereof. The adhesive diquat dibromide synergist is prepared from the following components in parts by weight: 10-40parts of polypropylene compound, 10-40 parts of surfactant, 0.1-20 parts of a wetting agent, 0.1-20 parts of dispersant, 0.1-20 parts of a penetrating agent, 0.1-10 parts of a pH value regulator and0.1-10 parts of a defoaming agent. The preparation method comprises the following steps: uniformly mixing the polypropylene compound and the surfactant; uniformly mixing the dispersant, the wetting agent and the penetrating agent with the mixture; adding the pH value regulator, and adding the defoaming agent. The adhesive diquat dibromide synergist has good mobility, is easy for production charging, and has low foam. The diquat dibromide pesticide prepared by adopting the synergist is safe to use, and does not have environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of pesticides, in particular to a synergist for diquat and a preparation method thereof. Background technique [0002] Diquat and paraquat are both bipyridine herbicides. Bipyridine herbicides were developed by ICI Company (now owned by Syngenta) in 1958. It is fast and conducts upward in the asymplast, but does not conduct downward in the phloem, so it cannot kill the lower part of the weed. Two important species of such herbicides are paraquat and diquat. The chemical name of diquat is 1,2-ethylene-2,2-bispyridine dionium salt, including alginate and dibromide, and other names such as Reglone, Aquacide, etc., and diquatdibromide is mainly used. The acute oral LD50 of this product in rats is 231mg / kg, with moderate toxicity. Bipyridyl herbicides can be quickly and strongly adsorbed by soil colloids, so they lose their activity once they touch the soil, so they are extremely safe for subsequent crops. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/02A01N25/24A01N25/30A01N43/90A01N31/02A01N37/04A01N37/18A01N43/36A01P13/00
CPCA01N25/02A01N25/24A01N25/30A01N31/02A01N37/04A01N37/18A01N43/36A01N43/90
Inventor 徐卫灿何华雄朱极卞维鑫张琦
Owner 南京拓际生物科技有限公司
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