Nicosulfuron atrazine oil suspension with methyl oleate as dispersing medium and preparation method thereof

A technology of methyl oleate and dispersing medium, applied in the field of broad-spectrum herbicidal preparations, can solve the problems of high viscosity, hinder the development and utilization of suspending agent, poor self-dispersion, etc. effect of ripening

Inactive Publication Date: 2019-02-15
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Suspoemulsion is a high-suspension emulsion system formed by dispersing and homogenizing a water-insoluble solid original drug, an oily liquid original drug and various additives in an aqueous medium. It has the dual characteristics of a suspending agent and an emulsion in water. It avoids environmental pollution caused by organic solvents and dusts of emulsifiable concentrates and wettable powders, and avoids the trouble of tank mixing various active ingredients of pesticides before use. Problems such as large size, poor self-dispersibility, Oswald ripening, etc., seriously hinder the development and utilization of suspending agent

Method used

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  • Nicosulfuron atrazine oil suspension with methyl oleate as dispersing medium and preparation method thereof
  • Nicosulfuron atrazine oil suspension with methyl oleate as dispersing medium and preparation method thereof
  • Nicosulfuron atrazine oil suspension with methyl oleate as dispersing medium and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 24% Nicotin·Atrazine dispersible oil suspension

[0030] The content of each component (by weight) is 20% for atrazine technical, 4% for nicosulfuron, and 2% for sulfate dispersant SD-208 (Shanghai Shida Polymer Materials Co., Ltd.); Nongru 500# 4%, NP-10 nonylphenol polyoxyethylene ether phosphate emulsifier 8% (Shanghai Shida Polymer Materials Co., Ltd.), thickener organic bentonite 2%, and methyl oleate to make up to 100%.

[0031] The preparation process is:

[0032] Step 1: Add all the emulsifiers to methyl oleate, mix and stir evenly, carry out continuous sanding with a horizontal sand mill, control the sanding temperature at 0-40℃, and stop sanding when the particle size reaches 1~5μm. 24% Nicotin·Atrazine dispersible oil suspension concentrate;

[0033] Step 2: Dissolve nicosulfuron, atrazine technical and dispersant in the above 24% nicocil·atrazine dispersible oil suspension agent according to the formula ratio, so that the materials are all wetted, and then added in...

Embodiment 2

[0037] Example 2 27% Nicotin·Atrazine dispersible oil suspension

[0038] The content of each component (by weight) is 20% of atrazine technical, 7% of nicosulfuron, 2% of sulfate dispersant SD-208 (Shanghai Shida Polymer Material Co., Ltd.); Styryl phenol Polyoxyethylene polyoxypropylene ether 4%, polymer EO-PO block copolymer 8%, thickener hydroxyethyl cellulose 2%, and methyl oleate to make up to 100%. Specific preparation process:

[0039] Step 1: Add all the emulsifiers to methyl oleate, mix and stir evenly, carry out continuous sanding with a horizontal sand mill, control the sanding temperature at 0-40℃, and stop sanding when the particle size reaches 1~5μm. 27% Nicotin·Atrazine dispersible oil suspension concentrate;

[0040] Step 2: Dissolve nicosulfuron, atrazine technical and dispersant in the above 24% nicocil·atrazine dispersible oil suspension agent according to the formula ratio, so that the materials are all wetted, and then added in the sand mill Appropriate amoun...

Embodiment 3

[0043] Example 3 23% Nicotin·Atrazine dispersible oil suspension

[0044] The content of each component (by weight) is 20% of atrazine technical, 3% of nicosulfuron, 2% of sulfate dispersant SD-208 (Shanghai Shida Polymer Material Co., Ltd.); Span-60 4%, AEO-9 fatty alcohol polyoxyethylene ether 8%, thickener methyl cellulose or polyvinyl alcohol 2%, and methyl oleate to make up to 100%.

[0045] Specific preparation:

[0046] Step 1: Add all the emulsifiers to methyl oleate, mix and stir evenly, carry out continuous sanding with a horizontal sand mill, control the sanding temperature at 0-40℃, and stop sanding when the particle size reaches 1~5μm. 23% Nicotin·Atrazine dispersible oil suspension concentrate;

[0047] Step 2: Dissolve nicosulfuron, atrazine technical and dispersant in the above 24% nicocil·atrazine dispersible oil suspension agent according to the formula ratio, so that the materials are all wetted, and then added in the sand mill Appropriate amount of zirconium bead...

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Abstract

The invention discloses a nicosulfuron atrazine oil suspension with methyl oleate as a dispersing medium. The nicosulfuron atrazine oil suspension with the methyl oleate as the dispersing medium is characterized by comprising the following components in percentage by weight: 10-30% of atrazine, 1-10% of nicosulfuron, 10-15% of an emulsifying agent, 1-6% of a wetting dispersant, 1-3% of a thickening agent and 100% of methyl oleate ; the dispersant is sulfate dispersant; the emulsifying agent is one or a combination of two or more than two of NP-series phosphate polyoxyethylene nonylphenol, AEO-series fatty alcohol-polyoxyethylene ether, high-molecular EO-PO block copolymer, alkylphenol polyoxyethylene phosphate, alkylphenol polyoxyethylene, Span series, styrene phenol polyoxyethylene polyoxypropylene amine ether and pesticide emulsifier 500#. Problems of high viscosity, poor spontaneous emulsification, austenite curing and the like in the emulsifying agent processing are obviously solved; an inclusion colloidal suspension is formed so that the migration of a pesticide in soil is small, no pollution to underground water is realized, and the production and use are safe.

Description

Technical field [0001] The invention relates to a broad-spectrum herbicidal preparation, in particular to a nicotine·atrazine oil suspension using methyl oleate as a dispersion medium and a preparation method thereof. Background technique [0002] Oil suspension concentrates are one or more solid pesticide active ingredients that are insoluble in oil solvents and are dispersed in a non-aqueous medium (i.e. oils) to form highly dispersed and stable suspension liquid preparations relying on surfactants and viscosity regulators. It has good dispersibility, full efficacy, stable performance, good adhesion, and obvious synergistic effect on the target. It is a very competitive new pesticide formulation. The dispersible oil suspension agent does not use any organic solvents, avoids flammable, explosive and poisoning problems in production, does not generate dust, and is safe for operators. In addition, using oil as a dispersion medium can reduce environmental pollution. [0003] Atrazin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/36A01N43/70A01N25/04A01P13/00
CPCA01N25/04A01N43/70A01N47/36
Inventor 任天瑞董秀莲胡国耀李海徽徐彬彬涂振北何鹏辉张明倩
Owner SHANGHAI NORMAL UNIVERSITY
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