CN101491248B - Preparation method of fenpyroximate suspending agent - Google Patents
Preparation method of fenpyroximate suspending agent Download PDFInfo
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- CN101491248B CN101491248B CN2008100565603A CN200810056560A CN101491248B CN 101491248 B CN101491248 B CN 101491248B CN 2008100565603 A CN2008100565603 A CN 2008100565603A CN 200810056560 A CN200810056560 A CN 200810056560A CN 101491248 B CN101491248 B CN 101491248B
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Abstract
The fenpyroximate suspending agent is oxime miticide with E body possessing higher miticidal activity than Z body, mainly contact killing effect, wide miticidal spectrum, and possessing both pesticidal and disease treating effect, and is suitable for preventing and treating red spider mite and whole-claw spider mite in various plants. The suspending agent (SC) is a liquid-solid system which is insoluble or slightly soluble in water, is uniformly dispersed in water by wet superfine grinding with the help of certain auxiliary agents, has fine particles and high suspension and can flow and be stable. The suspending agent is generally composed of active ingredients, five agents (dispersing agent, thickening agent, anti-settling agent, defoaming agent and antifreezing agent) and water, wherein the content of the active ingredients is generally 5% -50%, and the average particle size is generally about 3 um. Because the 'amphiprotic' (dispersibility and spreadability) of the suspending agent is good, and the suspending agent has high suspension rate, the suspending agent has strong capability of adhering to the surface of a plant body and is resistant to rain wash. Therefore, the preparation has more remarkable drug effect than wettable powder and longer drug effect period.
Description
Technical field
The present invention relates to a kind of preparation method of pesticidal preparations, be specifically related to a kind of preparation method of Enpyfoximate dispersant.
Technical background
Chinese adopted name: azoles mite ester
English common name: fenpyroximate
Chemical name: (E)-α-4-[1,3-dimethyl-(5-phenoxy group pyrazoles-4-base methylene amino oxygen)-special butyl ester of 4-methyl benzoic acid].
CAS registration number: 111812-58-9
Structural formula:
Molecular formula: C
24H
27N
3O
4
Molecular weight: 421.5
Physicochemical property: former medicine is a white crystalline powder.Fusing point is 101.1 to 102.4 ℃, and vapour pressure is 0.0075mPa in the time of 25 ℃.Be insoluble in water, dissolve in the multiple OOS, stable in acid and alkaline solution.
Azoles mite ester is the oximes miticide, and the E body is higher than Z body acaricidal activity, and the mode of action is main with action of contace poison, kills the mite spectrum extensively, and has the desinsection effect of curing the disease concurrently, is applicable to control tetranychus telarius and full pawl tetranychid on the various plants.Diseases such as insect such as diamond-back moth, prodenia litura, striped rice borer, rice fulgorid, black peach aphid and rice blast, powdery mildew, downy mildew also there is the good double effect of controlling.
It is the problem that contemporary people are concerned about most that chemicals causes environmental pollution; Agricultural chemicals has become one of main target of being attacked in all contaminants; Although it is it plays an important role in crop protection or public health, increasing from the pressure of environment aspect.Relevant chemistry of pesticide expert is just paying close attention to problem of environmental pollution, and makes great efforts research always by persistence and explore this pollution of minimizing, and has obtained no small achievement, and the exploitation of agricultural chemicals suspension agent is exactly a wherein successful example.
Suspending agent (SC) be insoluble or the former medicine that is slightly soluble in water by some auxiliary agent, be scattered in more equably in the water through the wet method ultramicro grinding, form a kind of particle higher suspension slightly, liquid-solid attitude system that can be fluidly stable.Suspending agent normally is made up of active ingredient and " five doses " (dispersant, thickener, antiprecipitant, antifoaming agent, antifreezing agent) and water, and content of effective is generally 5%-50%, and the average particle diameter is about 3um.Because " two property " (dispersiveness and the plate-out ability) of suspending agent is all relatively good, and suspensibility is high, and the ability that sticks to the plant corpus surface is more intense, resistance of rainwater washing against.So the drug effect of said preparation is remarkable than wetting powder, and the drug effect phase is longer.
Agricultural chemicals Water-borne modification formulation be with water as dispersion medium, pesticide original medicine (solid or oily liquid) is by the effect of dispersant or emulsifier and other auxiliary agent, makes it to suspend or emulsification is dispersed in the water.Compare with missible oil, can reduce a large amount of organic solvents; Compare with wetting powder, then do not have dust and disperse; Toxicity to people and animals is all lower with stimulation, and can alleviate the poisoning to crop; Can in the storage transportation, not cause burning because of organic solvent yet; Safety is higher; Suspending agent be with water as disperseing the suitable auxiliary agent of addition, process through special process, this formulation has overcome the harm that missible oil with an organic solvent brings to environment in a large number; Some shortcomings of pulvis have also been overcome simultaneously, so suspending agent is a kind of optimal selection that substitutes traditional missible oil and pulvis.
Technology contents
The objective of the invention is to propose a kind of preparation method of Enpyfoximate dispersant
The object of the invention is realized through following technical scheme:
The present invention provides a kind of preparation method of Enpyfoximate dispersant, comprises the steps:
1, the former medicine of azoles mite ester, surfactant water are dissolved in the water, stir.
2, during the solution after will mixing is packed moist sand mill into, mill 1-2 time each 2-4 hour.
3, the mixture formulation (particle diameter) after milling is analyzed, determined whether to be up to state standards.
4, regulation system pH value
5, satisfactory mixture is filtered, packs.
Suspending agent has the characteristics of wetting powder and missible oil simultaneously concurrently, and it as dispersion medium, and need not have danger, contaminated environment, organic solvent that price is high with the water inexpensive, that the source is abundant; The suspending agent filler that also expense is very not big, requirement is strict again.It adopts waterproof pulverization technology, rather than the dry pulverization process of wetting powder, and production process does not have " three wastes " pollution problem basically, and production environment and sanitary condition are all better.Suspending agent is not influenced by water quality, water temperature, application safety, convenience.Because the progress that obtains at aspects such as dispersion theory and process technologies, the stability problem of agricultural chemicals suspension agent (mainly being the layering caking) has also obtained solving preferably, thereby has promoted developing rapidly of agricultural chemicals suspension agent.
In order to understand essence of the present invention better, specify technology contents of the present invention with instance below, but content of the present invention is not limited thereto.
Instance one:
Get the former medicine 5.26kg of 95% azoles mite ester, alkylsulfonate 3kg, alkyl phenolic group polyoxyethylene groups phosphate 3kg, sodium hydroxyethlcellulose 0.2kg, ethylene glycol 4.0kg, ester-ether type compound 0.2kg, water 95.6kg evenly mixes, and grinds; Filtration, analytical control can get 5% Enpyfoximate dispersant.
Instance two:
Get the former medicine 10.52kg of 95% azoles mite ester, alkyl phenolic group polyoxyethylene groups ether 3kg, alkyl phenolic group polyoxyethylene groups phosphate 5kg, inorganic bentonite 1.0kg, glycerine 4.0kg, ester-ether type compound 0.2kg, water 76.28kg evenly mixes, and grinds; Filtration, analytical control can get 10.0% Enpyfoximate dispersant.
Instance three:
Get the former medicine 21.05kg of 95% azoles mite ester, alkyl phenolic group polyoxyethylene groups ether 2kg, fatty alcohol ethylene oxide adduct sulfonate 4kg, carboxy-propyl cellulose sodium 0.2kg, ethylene glycol 4.0kg, ester-ether type compound 0.2kg, water 68.55kg evenly mixes, and grinds; Filtration, analytical control can get 20.0% Enpyfoximate dispersant.
Instance four:
Get the former medicine 36.84kg of 95% azoles mite ester, dispersing agent MF 3kg, fatty alcohol ethylene oxide adduct sulfonate 5kg, Sodium Polyacrylate 0.2kg, ethylene glycol 4.0kg, ester-ether type compound 0.2kg, water 50.76kg evenly mixes, and grinds; Filtration, analytical control can get 35.0% Enpyfoximate dispersant.
Instance five:
Get the former medicine 42.10kg of 95% azoles mite ester, lignin and derivative sulfonate 3kg thereof, polycarboxylate 5kg, Sodium Polyacrylate 0.2kg, glycerine 4.0kg, the fatty alcohol 0.2kg of C8-10, water 50.76kg evenly mixes, and grinds; Filtration, analytical control can get 40.0% Enpyfoximate dispersant.
Claims (3)
1. the preparation method of an Enpyfoximate dispersant, containing effective composition is azoles mite ester, wetting agent, dispersant, thickener, antifreeze, antifoaming agent and water, each composition percentage by weight is counted:
Azoles mite ester 4%-40%,
Wetting agent 2%-5%,
Dispersant 2.7%-5%,
Thickener 0.18%-1%,
Antifreeze 3.6%-4%,
Antifoaming agent 0.18%-0.2%,
Water complements to 100%;
Said wetting agent is one or more in alkyl phenolic group polyoxyethylene groups ether, polycarboxylate, the alkylsulfonate;
Said dispersant is one or more in alkyl phenolic group polyoxyethylene groups phosphate, dispersing agent MF, lignin and the derivative sulfonate thereof;
Said thickener is one or more in sodium hydroxyethlcellulose, carboxy-propyl cellulose sodium, Sodium Polyacrylate, the bentonite;
Said antifreeze is one or more in ethylene glycol, the glycerine;
Said antifoaming agent is one or more in the fatty alcohol of ester-ether type compound, C8-10.
2. according to the preparation method of the described Enpyfoximate dispersant of claim 1, it is characterized in that the mixture particle diameter is smaller or equal to 5 microns.
3. according to the preparation method of the described Enpyfoximate dispersant of claim 1, the steps include: to calculate each amounts of components by proportioning and weight ratio, and weighing; With active ingredient, wetting agent, dispersant, antifreeze, antifoaming agent and water add in the moist sand mill and grind; Through detect, particle diameter adds thickener during smaller or equal to 5 microns, adjustment pH value, water is supplied by proportioning, grinding; Filter analyzing and packaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2008100565603A CN101491248B (en) | 2008-01-22 | 2008-01-22 | Preparation method of fenpyroximate suspending agent |
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| CN2008100565603A CN101491248B (en) | 2008-01-22 | 2008-01-22 | Preparation method of fenpyroximate suspending agent |
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| CN101491248A CN101491248A (en) | 2009-07-29 |
| CN101491248B true CN101491248B (en) | 2012-04-18 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101637176B (en) * | 2009-08-27 | 2013-09-18 | 深圳诺普信农化股份有限公司 | Pesticide suspension |
| CN103651405B (en) * | 2011-04-26 | 2014-11-12 | 陕西韦尔奇作物保护有限公司 | Pesticide composition containing etoxazole |
| CN108041031A (en) * | 2017-12-05 | 2018-05-18 | 徐州农丰生物化工有限公司 | A kind of fenpyroximate nicotine recompounding suspension and preparation method thereof |
| CN115067351A (en) * | 2022-04-15 | 2022-09-20 | 江西省农业科学院植物保护研究所 | Pyrifluazuron suspending agent and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000128704A (en) * | 1998-10-26 | 2000-05-09 | Nippon Nohyaku Co Ltd | Aqueous suspension-like agrochemical composition |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000128704A (en) * | 1998-10-26 | 2000-05-09 | Nippon Nohyaku Co Ltd | Aqueous suspension-like agrochemical composition |
Non-Patent Citations (2)
| Title |
|---|
| 周伯仁.5%霸螨灵防治香梨红蜘蛛试验.《农业科技与信息》.1997,全文. * |
| 李颂恩.防治柑桔锈壁虱红蜘蛛的药剂试验.《广西植保》.1991,全文. * |
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Address after: 1901d, 19th floor, Zhongguancun building, No. 27, Zhongguancun Street, Haidian District, Beijing 100080 Patentee after: BEIJING GREEN AGROSINO CROP TECHNOLOGY CO.,LTD. Address before: 100080, Zhongguancun building, No. 27 Zhongguancun street, Beijing, Haidian District, China, 14 floor Patentee before: BEIJING GREEN AGROSINO Corp. |