CN103858903A - Mancozeb wettable powder containing organosilicon surfactant, and preparation method thereof - Google Patents
Mancozeb wettable powder containing organosilicon surfactant, and preparation method thereof Download PDFInfo
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- CN103858903A CN103858903A CN201410102187.6A CN201410102187A CN103858903A CN 103858903 A CN103858903 A CN 103858903A CN 201410102187 A CN201410102187 A CN 201410102187A CN 103858903 A CN103858903 A CN 103858903A
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- mancozeb
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Abstract
The invention relates to mancozeb wettable powder containing an organosilicon surfactant, and a preparation method of the mancozeb wettable powder. The pesticide composition provided by the invention comprises one or more pesticide active ingredients including mancozeb and the like, the organosilicon surfactant, a dispersing agent, a wetting agent, a filler and an optional stabilizer. Furthermore, the invention also provides the preparation method, the application and the like of the pesticide composition.
Description
Technical field
The present invention relates to pesticide field, more specifically relate to the using method of a kind of novel agrochemical auxiliary agent in mancozeb class wetting powder and the preparation method of this wetting powder.
Background technology
Mancozeb is the co-ordination complex of maneb and zinc ion, is the wider protective fungicide of a kind of fungicidal spectrum.Also be the kind most widely used in same series bactericidal agent, consumption is maximum, its mechanism of action is mainly to suppress the oxidation of pyruvic acid in thalline and reach bactericidal object.Be mainly used in preventing and treating the multiple diseases of various crop, effective to multiple diseases such as the downy mildew on fruit tree, vegetables, anthracnose, early blight, its normal and multiple systemic fungicide mixture, to expand fungicidal spectrum, delays pathogen bactericide is produced to resistance simultaneously.
Pesticide wettable is a kind of very important formulation in pesticidal preparations.Agricultural chemicals will be brought into play high service efficiency, first will make pesticide solution on target substance, fully sprawl and be detained.This just requires liquid to have lower surface tension, has good wetability and permeability on target surface.Otherwise will cause fluid loss, will inevitably affect like this drug effect, directly environment caused to serious pollution.Meanwhile, if drug effect is not high, peasant will inevitably strengthen dispenser dynamics and intensity, has both caused the increase of agricultural chemicals use cost, has also caused the severe overweight of residue of pesticide.Therefore, improving agricultural chemicals availability is to reduce drug cost, reduces environmental pollution, reduces the basic of residue of pesticide.
Organosilicon table surfactant is existing more patent report in other field, but in pesticide field, uses three patents such as only having at present a kind of liquid pesticidal formulations that contains avermectins and organic silicon surfactant of applicant application and preparation method thereof, a kind of pesticide water dispersible granules that contains organic silicon surfactant and preparation method thereof, a kind of agricultural chemicals suspension agent that contains organic silicon surfactant and preparation method thereof open.Compared with conventional surfactant, organic silicon surfactant can effectively reduce the surface tension of water, reduces the contact angle of liquid and biological target, has the infiltration capacity that good wetability, stronger adhesion, superpower extended capability are become reconciled.Can make liquid arrive the place that is difficult to soak, increase spraying coverage rate, promote that liquid absorbs fast.Can improve the resistance of rainwater washing against ability of liquid, improve the effective rate of utilization of agricultural chemicals, reduce agricultural chemicals injected volume simultaneously.As a kind of novel, efficient insecticides adjuvant, it has broad application prospects in pesticide industry.
Therefore, in the present invention novel surfactant-organic silicon surfactant is joined in pesticide wettable, made a kind of physical stability, chemical stability, all good pesticide wettables of preparation effect.
Summary of the invention
The object of the invention is to propose a kind of mancozeb class wetting powder that contains organic silicon surfactant and preparation method thereof.
Pesticide wettable of the present invention is by pesticidal active substance mancozeb and other bactericide, organic silicon surfactant, auxiliary element and media assemblage.
Pesticidal active substance is wherein mainly mancozeb, and other active component is to be selected from bactericide gloomy one or more that are selected from metalaxyl, white urea cyanogen, dimethomorph, Difenoconazole, propiconazole, nitrile bacterium azoles, triazolone, phonetic mould amine, tmtd, Flusilazole of generation.
Organic silicon surfactant wherein can be to well known to a person skilled in the art those.Preferably there is T-shaped structure, by being all the skeleton that siloxanes forms that methylates, with the trisiloxanes of one or more polyethers tail.More preferably GE company produces Silwet408, Silwet625, Silwet618 SilwetPD, and Silwet806, the Boost that Doro Elaneo company produces, or the Sylgard309 of Doco Corning company production etc.Concrete general structure is
Pesticide water dispersible granules of the present invention also contains auxiliary element.Described auxiliary element wetting agent is for being selected from Nekal BX, fatty acid sulfate salt, alkylbenzenesulfonate, lauryl sodium sulfate, dialkyl group succinate sulfonate sodium, α olefin sulfonate, fatty alcohol alkylphenol polyoxyethylene succinate monoester sulfonate, fatty acid amide N methyl taurine sodium salt, lauryl alcohol polyethylene glycol oxide base ether sodium sulfate, alkylphenol polyoxyethylene sulphate, single two Negel, sodium lignin sulfonate, butyl biphenyl natrium phenolsulfonicum, phenolsulfonic acid formaldehyde condensation products sodium salt, phosphate ester salt, the more preferably Morwet EFW of Akzo Nobel N.V., Morwet DB, Morwet B, Morwet IP, Morwet 3028, one or more in Morwet 3008.
Dispersant is for being selected from sodium lignin sulfonate, calcium lignosulfonate, alkyl polyoxyethylene ether sulfonate, polyoxyethylene poly-oxygen propylene aether block copolymer, alkylphenol polyoxyethylene formaldehyde condensation products, petroleum sodium sulfonate, aliphatic alcohol polyoxyvinethene phosphate, benzyl naphthalenesulfonate formaldehyde condensation compound (dispersing agent C NF), 1-methyl naphthalene sulfonate formaldehyde condensate (Dispersant MF), desugar condensation sodium lignin sulfonate (dispersant M), di-2-ethylhexylphosphine oxide bitter edible plant sodium sulfonate (dispersant NNO), the more preferably Morwet D-425 of Akzo Nobel N.V., Morwet D-110, Morwet D-450, one or more in Morwet D-500.
Stabilizing agent is one or more that are selected from phenol, butyl glycidyl ether, potassium sorbate, Sodium Benzoate, epoxidised soybean oil, linseed oil, BHA, BHT, citric acid, PABA, castor oil, olive oil, hydroquinones, bisnaphthol, salicylic acid.
Filler can be selected from one or more in kaolin, white carbon, attapulgite, potter's clay, bentonite, montmorillonite, calcium carbonate, diatomite, dolomite, talcum.
Mancozeb class wetting powder containing organic silicon surfactant of the present invention consists of pesticide activity component mancozeb 20%～80%, other pesticide activity component 1%～40%, organic silicon surfactant 1%～25%, auxiliary element and media assemblage.
Further, the composition of pesticide water dispersible granules of the present invention is by weight:
Mancozeb 20%～80% other pesticide activity component 1%～40%
Wetting agent 0.5%～20% organic silicon surfactant 1%～25%
Dispersant 0.5%～20% stabilizing agent 0～10%
Filler 2%～90%
Pesticide water dispersible granules of the present invention can be prepared by the following method:
First with white carbon, organic silicon surfactant is adsorbed and divided and stir, again by pesticide activity component and wetting agent, dispersant, stabilizing agent, carrier after precomminution, evenly after air-flow crushing, be fully uniformly mixed again and obtain wetting powder finished product again with above-mentioned mixing of materials.
Pesticide wettable of the present invention can wet-milling due to pesticide activity component is processed into, and add therein organic silicon surfactant, thereby have the following advantages: (1) is solvent-free, little to environment and water pollution, to the producer and user and Environmental security; (2) convenient transportation, good fluidity, is not adhered, does not lump, does not glue wall, cost-saving, easily packing; (3) after said preparation spraying, there is low surface tension, good in target surface wettability, sprawl with infiltration capacity by force, be distributed in target surface with fine particle, be conducive to improve drug effect; (4) organosilicon auxiliary agent can make liquid arrive the place that is difficult to soak, and increases spraying coverage rate, promotes that liquid absorbs fast.Improve the resistance of rainwater washing against ability of liquid, improve the effective rate of utilization of agricultural chemicals, reduce agricultural chemicals injected volume and residue of pesticide.
The invention provides a kind of efficient, low toxicity, wetting powder that biologically effective availability is high, comparatively friendly to environment.Said preparation is solvent-free, environmental pollution is few, and novel surfactant-organic silicon surfactant is incorporated in the processing of pesticide wettable, by the physical dispersion effect of wetting dispersing agent and air-flow crushing, form a kind of physical stability, chemical stability, all good pesticide wettables of preparation effect, when use, pesticide activity component can be dispersed in water.Preparation technology of the present invention is simple, and production cost is low.
Embodiment:
Essence for a better understanding of the present invention, describe technology contents of the present invention in detail below, but content of the present invention is not limited to this with example.
mono-: 80% mancozeb wettable powder of embodiment
Each constituent content is mancozeb 80% by weight, dispersant Morwet D-425 4%, and wetting agent Morwet EFW 2%, organic silicon surfactant Silwet408 6%, white carbon 2%, filler kaolin complements to 100%.
Preparation process is: first pesticide activity component mancozeb and wetting agent, dispersant, half kaolin are fully uniformly mixed after air-flow crushing, then add successively with the organic silicon surfactant of white carbon absorption and second half kaolin again through air-flow crushing and after stir after mixing and obtain 80% mancozeb wettable powder finished product.
bis-: 58% first frost mancozeb wettable powders of embodiment
Each constituent content is mancozeb 48% by weight, metalaxyl 10%, dispersant Morwet D-425 3%, wetting agent Morwet EFW 3%, organic silicon surfactant Silwet408 6%, white carbon 2%, stabilizing agent Sodium Benzoate 1%, filler kaolin complements to 100%.
Preparation process is: first pesticide activity component mancozeb, metalaxyl and wetting agent, dispersant, stabilizing agent, half kaolin are fully uniformly mixed after air-flow crushing, then add successively organic silicon surfactant and second half kaolin with white carbon absorption, with through air-flow crushing and after stir after mixing, obtain 58% first frost mancozeb wettable powder finished product.
tri-: 69% mancozeb dimethomorph wetting powders of embodiment
Each constituent content is mancozeb 60%, dimethomorph 9%, dispersant Morwet D-450 3%, wetting agent Morwet EFW 2% by weight, organic silicon surfactant Silwet618 8%, white carbon 2.0%, stabilizing agent BHT 1%, filler precipitated calcium carbonate supply 100%.
Preparation process is: first pesticide activity component mancozeb, dimethomorph and wetting agent, dispersant, stabilizing agent, half precipitated calcium carbonate are fully uniformly mixed after air-flow crushing, then add successively with the organic silicon surfactant of white carbon absorption and the precipitated calcium carbonate of surplus, through air-flow crushing and after mix after stir, obtain 69% mancozeb dimethomorph wetting powder.
tetra-: 72% mancozeb frost urea cyanogen wetting powders of embodiment
Each constituent content is mancozeb 64% by weight, white urea cyanogen 8%, dispersant Morwet D-450 4%, wetting agent Morwet 3,028 2%, organic silicon surfactant Silwet408 8%, white carbon 3%, stabilizing agent potassium sorbate 0.5%, filler kaolin complements to 100%.
Preparation process is: first pesticide activity component mancozeb, dimethomorph and wetting agent, dispersant, stabilizing agent, half kaolin are fully uniformly mixed after air-flow crushing, then add successively organic silicon surfactant and second half kaolin with white carbon absorption, through air-flow crushing and after mix after stir, obtain 69% mancozeb dimethomorph wetting powder.
embodiment five: preparation physicochemical property Efficiency assessment
To adding the preparation of organic silicon surfactant described in the present invention, the assay method of every evaluation index is as follows: (in following experiment, CK all adopts the white carbon of equivalent to substitute organic silicon surfactant, all the other recipe ingredients and of the present invention same)
1, surface tension ()
The mensuration of medical liquid surface tension adopts platinum plate method.The surface tension of liquid is during lower than the surface free energy of target, and liquid is just likely at target moistened surface with sprawl.
2, dynamic contact angle (q)
Dynamic contact angle adopts contact angle measurement to measure, and adopts video method.The liquid that dynamic contact angle is little is strong to wettability on selected target.
3, drop expanding area (S)
The mensuration of drop expanding area adopts integration method.Drop expanding area has directly represented the extended capability of liquid on target surface, and drop expanding area is large, shows that preparation spreadability is good.
Table 1 preparation Efficiency assessment of the present invention (dilution 1000 ×)
| Mensuration project | CK | FORMULATION EXAMPLE 1 |
| Surface tension (mN/m) | 37.3 | 22.1 |
| Contact angle when 30s (°) | 56.2 | 30.8 |
| Expansion radius (mm) when 30s | 2.35 | 4.31 |
The Efficiency assessment (dilution 1000 ×) of table 2 preparation of the present invention
| Mensuration project | CK | FORMULATION EXAMPLE 2 |
| Surface tension (mN/m) | 37.9 | 22.3 |
| Contact angle when 30s (°) | 60.5 | 34.2 |
| Expansion radius (mm) when 30s | 2.86 | 4.28 |
The Efficiency assessment (dilution 1000 ×) of table 3 preparation of the present invention
| Mensuration project | CK | FORMULATION EXAMPLE 3 |
| Surface tension (mN/m) | 38.6 | 22.7 |
| Contact angle when 30s (°) | 61.4 | 33.8 |
| Expansion radius (mm) when 30s | 2.69 | 4.25 |
Can find out from above measurement result, be added with the preparation of organic silicon surface active agent can reduce liquid effectively surface tension, contact angles and wetting time than control formulation, increase the expanding area of drop.
six: 69% mancozeb dimethomorph wetting powder field efficacy control efficiency of embodiment are evaluated
To adopt the agricultural chemicals wettability pulvis of the present invention's production to compare the advance of the pesticide wettable that does not add organic silicon surfactant production in order further verifying, to have carried out respectively field control effectiveness test, described in employing method and result are exemplified below.Below, in experiment, CK adopts the white carbon of equivalent to substitute organic silicon surfactant, all the other recipe ingredients and of the present invention same.
Trial crops is cucumber, and controlling object is downy mildew, by 600 times of preparation dilutions, by 100 grams of even spraying of amount of formulation for mu, in the dispenser of downy mildew their early stage once, after 7 days, executes medicine for the second time, executes medicine for the third time, altogether dispenser three times after 14 days.Each processing in triplicate, is investigated for the third time 7 days preventive effects after medicine, the results are shown in following table.Because the formula that does not exist mancozeb isoreactivity composition to contain organic silicon surfactant (active component adopts the white carbon of equivalent to replace) does not have preventive effect, so organic silicon surfactant can be worked in coordination with the preventive effect that increases mancozeb isoreactivity composition.
Table 4 69% mancozeb dimethomorph wetting powder is prevented and treated the comparison of downy mildew effect
Claims (10)
1. composition pesticide, it comprises mancozeb, organic silicon surfactant, dispersant, wetting agent and filler, optionally also comprises stabilizing agent;
Preferably it also comprises other active component, and more preferably described other active component is selected from one or more in metalaxyl, dimethomorph, white urea cyanogen.
2. composition pesticide claimed in claim 1, wherein organic silicon surfactant is Silwet408 and/or Silwet618.
3. composition pesticide claimed in claim 1, wherein dispersant is Morwet D-425 and/or Morwet D-450.
4. composition pesticide claimed in claim 1, wherein wetting agent is Morwet EFW and/or Morwet 3028.
5. composition pesticide claimed in claim 1, wherein filler has two kinds, and preferred filler is white carbon and is selected from the one in kaolin and precipitated calcium carbonate.
6. composition pesticide claimed in claim 1, wherein stabilizing agent is selected from one or more in Sodium Benzoate, BHT and potassium sorbate.
7. the composition pesticide described in claim 1 or 2, wherein each constituent content is by weight
Mancozeb 20%～80%
Other active component 0%～40%
Organic silicon surfactant 1%～25%
Dispersant 0.5%～20%
Wetting agent 0.5%～20%
Stabilizing agent 0～10%
Filler complements to 100%.
8. composition pesticide claimed in claim 1, it is 80% mancozeb wettable powder, 58% first frost mancozeb wettable powder, 69% mancozeb dimethomorph wetting powder or 72% mancozeb frost urea cyanogen wetting powder, wherein
In 80% mancozeb wettable powder, each constituent content is mancozeb 80% by weight, dispersant Morwet D-425 4%, and wetting agent Morwet EFW 2%, organic silicon surfactant Silwet408 6%, white carbon 2%, filler kaolin complements to 100%;
In 58% first frost mancozeb wettable powder, each constituent content is mancozeb 48% by weight, metalaxyl 10%, dispersant Morwet D-425 3%, wetting agent Morwet EFW 3%, organic silicon surfactant Silwet408 6%, white carbon 2%, stabilizing agent Sodium Benzoate 1%, filler kaolin complements to 100%;
In 69% mancozeb dimethomorph wetting powder, each constituent content is mancozeb 60%, dimethomorph 9%, dispersant Morwet D-450 3%, wetting agent Morwet EFW 2% by weight, organic silicon surfactant Silwet618 8%, white carbon 2.0%, stabilizing agent BHT 1%, filler precipitated calcium carbonate supply 100%;
In 72% mancozeb frost urea cyanogen wetting powder, each constituent content is mancozeb 64% by weight, frost urea cyanogen 8%, dispersant Morwet D-450 4%, wetting agent Morwet 3,028 2%, organic silicon surfactant Silwet408 8%, white carbon 3%, stabilizing agent potassium sorbate 0.5%, filler kaolin complements to 100%.
9. the preparation method of arbitrary described composition pesticide of claim 1-8, it comprises
(1) by mancozeb and other optional active components, with wetting agent, dispersant and optional stabilizing agent, and the filler an of part (being preferably half) non-white carbon, after air-flow crushing, be fully uniformly mixed;
(2) white carbon is mixed with organic silicon surface active agent, make white carbon absorption organic silicon surfactant;
(3) filler of product step (2) being obtained and the non-white carbon of surplus joins in the product that step (1) obtains successively, after air-flow crushing, mixes.
10. arbitrary described composition pesticide of claim 1-8 is in more than 85% application in (preferably more than 88%, more preferably more than 90%) of control cucumber downy mildew preventive effect.
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| CN201410102187.6A CN103858903A (en) | 2013-05-08 | 2014-03-19 | Mancozeb wettable powder containing organosilicon surfactant, and preparation method thereof |
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| CN201310166004 | 2013-05-08 | ||
| CN201310166004.2 | 2013-05-08 | ||
| CN201410102187.6A CN103858903A (en) | 2013-05-08 | 2014-03-19 | Mancozeb wettable powder containing organosilicon surfactant, and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106614732A (en) * | 2016-08-31 | 2017-05-10 | 贾源超 | Fungicidal and moss-eliminating agent for lawn and preparation method thereof |
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| CN101053328A (en) * | 2007-05-25 | 2007-10-17 | 天津市东方农药有限公司 | Bactericide composition containing dimethomorph |
| CN101156591A (en) * | 2007-09-19 | 2008-04-09 | 湖南万家丰科技有限公司 | Mite-killing composition containing fenbutatin |
| CN101632355A (en) * | 2009-08-31 | 2010-01-27 | 桂林集琦生化有限公司 | Pesticide water dispersible granule containing organic silicon surface active agent and preparation method thereof |
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- 2014-03-19 CN CN201410102187.6A patent/CN103858903A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101053328A (en) * | 2007-05-25 | 2007-10-17 | 天津市东方农药有限公司 | Bactericide composition containing dimethomorph |
| CN101156591A (en) * | 2007-09-19 | 2008-04-09 | 湖南万家丰科技有限公司 | Mite-killing composition containing fenbutatin |
| CN101632355A (en) * | 2009-08-31 | 2010-01-27 | 桂林集琦生化有限公司 | Pesticide water dispersible granule containing organic silicon surface active agent and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106614732A (en) * | 2016-08-31 | 2017-05-10 | 贾源超 | Fungicidal and moss-eliminating agent for lawn and preparation method thereof |
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Application publication date: 20140618 |