Auxiliary agent, diquat aqueous solution containing auxiliary agent agent and preparation method thereof

A technology of diquat and adjuvant, applied in herbicides and algaecides, botanical equipment and methods, biocides, etc., can solve problems such as poor herbicidal effect, and achieve remarkable herbicidal effect, extensive utilization value and effect good effect

Inactive Publication Date: 2020-08-11
NANJING WELL BIOCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to overcome the defects of poor herbicidal effect of the existing diquat water formulation, and provide a kind of auxiliary agent, diquat water formulation and preparation method used in diquat

Method used

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  • Auxiliary agent, diquat aqueous solution containing auxiliary agent agent and preparation method thereof
  • Auxiliary agent, diquat aqueous solution containing auxiliary agent agent and preparation method thereof
  • Auxiliary agent, diquat aqueous solution containing auxiliary agent agent and preparation method thereof

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preparation example Construction

[0034] According to the preparation method of the diquat water agent containing auxiliary agent of the present invention, wherein, the method comprises the following steps: (1) preparing phthalate-based Gemini surfactant; (2) combining the above steps ( 1) The obtained phthalate-based Gemini surfactant is mixed with alkylamidopropyl betaine, fatty alcohol polyoxyethylene ether, citric acid and water in proportion, and then reacted until the material is uniform to obtain the auxiliary agent (3) mixing the auxiliary agent obtained in the above step (2) with the diquat mother liquor and water in proportion and stirring evenly to obtain the auxiliary agent-containing diquat water agent. Wherein, the phthalate-based Gemini surfactant in the step (1) is prepared according to the following steps: a. get equimolar amounts of N,N-diethanolamine and dodecane bromide and join in the solvent react, then heat up to 100-120°C for vacuum dehydration to obtain ethanol quaternary ammonium salt...

Embodiment 1

[0042] Preparation of phthalate-based Gemini surfactant: add equimolar N, N-diethanolamine, dodecane bromide, and water (60% of the reactant) to the reaction kettle, and stir at 60°C for reaction After 4 hours, the temperature was raised to 110°C for vacuum dehydration to obtain ethanol quaternary ammonium salt. Mix ethanol quaternary ammonium salt and phthaloyl chloride in a molar ratio of 2:1, add dichloropropane (accounting for 50% of the mass of the reactant), heat up to 60°C for 4 hours, and heat up to 90°C under vacuum after the reaction is complete. Removal of the solvent yielded the product phthalate-based Gemini surfactant.

[0043] Auxiliary preparation: 30 parts of phthalate-based Gemini surfactants obtained above, 20 parts of lauryl amidopropyl betaine, 15 parts of polyoxyethylene lauryl ether (3EO), 3 parts of citric acid and Mix 32 parts of water, then raise the temperature to 40°C and stir for 2 hours until the material is uniform to prepare the additive.

[0...

Embodiment 2

[0046] Preparation of phthalate-based Gemini surfactant: add equimolar N, N-diethanolamine, dodecane bromide, and water (60% of the reactant) to the reaction kettle, and stir the reaction at 50°C After 6 hours, the temperature was raised to 100°C for vacuum dehydration to obtain ethanol quaternary ammonium salt. Mix ethanol quaternary ammonium salt and phthaloyl chloride in a molar ratio of 2:1, add dichloropropane (accounting for 50% of the mass of the reactant), heat up to 70°C for 2 hours, and heat up to 110°C under vacuum after the reaction is complete Removal of the solvent yielded the product phthalate-based Gemini surfactant.

[0047] Preparation aids: 25 parts of phthalate-based Gemini surfactants obtained above, 40 parts of cocamidopropyl betaine, 20 parts of stearyl polyoxyethylene ether (15EO), 5 parts of citric acid Mix with 10 parts of water, and then raise the temperature to 50°C and stir for 1 hour until the material is uniform to prepare the additive.

[0048...

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Abstract

The invention discloses an auxiliary agent and a diquat aqueous solution containing the auxiliary agent. The auxiliary agent is prepared from 25 to 30 percent of a phthalate Gemini surfactant, 20 to 40 percent of alkylamide propyl betaine, 10 to 20 percent of fatty alcohol-polyoxyethylene ether, 3 to 5 percent of citric acid and the balance of water. The aquacide aqueous solution comprises 50% ofaquacide mother liquor, 5-15% of the auxiliary agent and the balance of water. The invention also provides a preparation method of the diquat aqueous solution. The auxiliary agent disclosed by the invention has a good synergistic effect on the diquat when being used in the diquat.

Description

technical field [0001] The invention relates to the technical field of herbicides, in particular to an adjuvant, diquat water containing the adjuvant and a preparation method. Background technique [0002] Diquat, whose international common name is diquat, and whose chemical name is 1,1′-ethylene-2,2′-bipyridine dibromide, is a bipyridine cationic non-selective contact herbicide. Slightly conductive, after being absorbed by green plants, it inhibits the electron transfer of photosynthesis. Under the induction of light, the bipyridine compound in the reduced state is quickly oxidized in the presence of oxygen to form active hydrogen peroxide. The accumulation of this substance makes The plant cell membrane is destroyed, making the treated part withered and yellow. Diquat is suitable for weeding in plots dominated by broad-leaved weeds, and can also be used as a desiccant for seed plants. Diquat can also be used as a crop withering agent. When treating mature crops, the rema...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01N25/02A01N25/30A01P13/00
CPCA01N25/02A01N25/30A01N43/90
Inventor 刘畅崔琰沈德方潘超
Owner NANJING WELL BIOCHEM
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