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Oil suspending agent of pesticide and preparation method of oil suspending agent

A technology of oil suspension and pesticide, applied in the field of pesticide oil suspension and its preparation, can solve the problems of large amount of pesticide application, poor use effect, difficulty in emulsification and dispersion, etc., achieve outstanding pesticide application effect, easy adhesion, and reduce application The effect of the dose

Inactive Publication Date: 2018-06-15
SHANGYU NUTRICHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the disadvantages of poor field use effect and large application amount of traditional water suspensions in the prior art, the present invention provides a pesticide oil suspension. Large size, easy to paste after grinding, more oil separation after storage at room temperature or heat storage, etc., provide a pesticide oil suspension concentrate with strong formula versatility, convenient use, stable product performance, and obvious synergistic effect after application. Preparation

Method used

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  • Oil suspending agent of pesticide and preparation method of oil suspending agent
  • Oil suspending agent of pesticide and preparation method of oil suspending agent
  • Oil suspending agent of pesticide and preparation method of oil suspending agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of alkylbenzene sulfonic acid polycarboxylate potassium salt copolymer:

[0039] Add a certain amount of polycarboxylic acid intermediate to the reaction flask, start stirring, slowly raise the temperature and reflux to 90°C, start to slowly add sodium dodecylbenzene sulfonate, among which, the polycarboxylic acid intermediate and dodecyl The molar ratio of sodium benzene sulfonate is 7:1, and the reaction is constant for 4 hours. After the reaction is complete, the temperature is lowered to 30°C, and a 40% potassium hydroxide aqueous solution is added to adjust the pH to 8.0-9.0. The temperature is lowered to -5°C and dried by suction filtration, and the filtered product is the alkylbenzene sulfonic acid polycarboxylate potassium salt copolymer.

[0040] The polycarboxylic acid intermediate is an existing commodity.

[0041] Preparation of compound emulsifier:

[0042] Disperse styrene-based phenol polyoxyethylene ether, polyol fatty acid ester and its ethylene o...

Embodiment 2

[0044] Preparation of 250g / L azoxystrobin oil suspension concentrate:

[0045] After the azoxystrobin technical drug is refined and dried and all the indicators are qualified, it is pulverized by ultra-fine jet until the particle size reaches D 90 ≤5.0μm, add 67.0% soybean oil and 10.0% compound emulsifier to the batching kettle, stir to form a uniform mixed solution; add 23.0% ultrafine pulverized azoxystrobin powder, high-speed shearing and stirring to form a water-like emulsion State, detect particle size D 90 ≤5.0μm, sampling and testing, transport to finished product storage tank after qualified, and then package into products.

[0046] Among them, the composite emulsifier is composed of the following parts by weight: 14 parts of tristyryl phenol polyoxyethylene ether (Nongru 600#), 16 parts of Tween-60, 11 parts of dioctyl butenedioate calcium sulfonate, 10 parts of alkylbenzene sulfonic acid polycarboxylate potassium salt copolymer, 35 parts of solvent oil 180#, 7.5 parts of...

Embodiment 3

[0052] Preparation of 430g / L tebuconazole oil suspension concentrate:

[0053] According to the weighed 40.0% tebuconazole, 48% methyl oleate and 12.0% compound emulsifier are added to the batching kettle 1, fully stirred to form a mixed uniform solution; continuous sanding by a horizontal sand mill, control Granularity D 90 ≤5.0μm, after the particle size is qualified, transfer to the batching kettle 2; high-speed shearing and stirring to form a state similar to water emulsion, check the particle size D 90 ≤5.0μm; sampling and testing, after passing the test, it will be transported to the finished product storage tank and packaged into products.

[0054] Among them, the composite emulsifier is composed of the following parts by weight: 15 parts of Nongru 600#, 14 parts of Tween-80, 10 parts of butenedioic acid dilauryl ester sulfonate magnesium, 10 parts of alkylbenzene sulfonic acid polycarboxylic acid Potassium salt copolymer, 39 parts of solvent naphtha 150#, 8 parts of propyle...

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Abstract

The invention discloses an oil suspending agent of pesticide, which comprises a bactericide, compound emulsifier and an oil base, wherein the compound emulsifier mainly comprises styryl phenol polyoxyethylene ether, polyol fatty acid ester, an ethylene oxide adduct of polyol fatty acid ester, fatty ester sulphonate and a modified polycarboxylate copolymer. A preparation method of the oil suspending agent of the pesticide comprises the steps of grinding the bactericide with a ultramicro air flow grinder, controlling a particle size D90 to be less than or equal to 5.0 micrometers, uniformly stirring the compound emulsifier and the oil base, adding the ground bactericide, and performing shear stirring and inspection to form the oil suspending agent of the pesticide. Another preparation methodcomprises the steps of uniformly mixing the bactericide, the compound emulsifier and the oil base according to a proportion, performing continuous grinding with a horizontal sand mill to control theparticle size D90 to be less than or equal to 5.0 micrometers, and performing inspection to form the oil suspending agent of the pesticide. A formula of the prepared oil suspending agent of the pesticide is high in generality; and the oil suspending agent is convenient to use and stable in product performance, and can obviously improve an effect after application.

Description

Technical field [0001] The invention relates to a pesticide adjuvant and a pesticide preparation processing method, in particular to a pesticide oil suspension and a preparation method thereof. Background technique [0002] Pesticide oil suspension is an oil-insoluble solid active ingredient of pesticide in a non-aqueous medium (ie oil), which relies on surfactants to form a highly dispersed and stable suspension liquid formulation. The particle size is generally small, usually requiring D 90 ≤5.0μm. The dosage form is mainly composed of original medicine, surfactant, viscosity modifier, defoamer, stabilizer and oil base. Since the oil body has good adhesion and spreadability, it is easy to adhere to the surface of the leaf, so the oil suspension agent has strong resistance to rain erosion, reduces the drift of fog droplets, and can significantly improve the application effect of the fungicide. High-quality, high-yield, efficient and sustainable modern agricultural production c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N25/30A01N43/54A01N43/653A01N43/36A01P3/00C08F8/36C08F283/06
CPCA01N25/04A01N25/30A01N43/36A01N43/54A01N43/653C08F8/36C08F283/065
Inventor 冯应江宋根苗陈佳易申宏伟刘迎春周辰黄勤杨惠方梅小玲方国锋孙久社胡万全杨军温沛宏
Owner SHANGYU NUTRICHEM
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