CN100396184C - Hostathion micro emulsion and its preparing method - Google Patents
Hostathion micro emulsion and its preparing method Download PDFInfo
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- CN100396184C CN100396184C CNB2006101248616A CN200610124861A CN100396184C CN 100396184 C CN100396184 C CN 100396184C CN B2006101248616 A CNB2006101248616 A CN B2006101248616A CN 200610124861 A CN200610124861 A CN 200610124861A CN 100396184 C CN100396184 C CN 100396184C
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- hostathion
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Abstract
Hostathion micro-emulsion, a kind of pesticide composition, is comprised of 5-25wt.% of hostathion,1-10wt.% of solvent,5-30wt.% emulsifying agent,0.5-5wt% stabilizing agent and residual water. And stabilizing agent is selected from at least one of the followings, ammonium acetate,ammonium sulphate,potassium dihydrogen phosphate(KDP),diammonium phosphate,carbamide,methylurea,ethylurea. It is advanced in its low production cost and being safe during the production, the storage and the use period. The stability of hostathion is obviously improved, especially in solving the sedimentation issue. The solvent is greatly reduced, so it is more economic to the resource and the environment.
Description
Technical field
The present invention relates to a kind of pesticidal preparations and preparation method thereof, is a kind of triazophos micro-emulsion and preparation method thereof specifically.
Background technology
Hostathion be a broad spectrum pesticide with certain eelworm-killing activity, this medicament have tag, stomach poison function, and have and ooze effect in certain, the crop of its registration and controlling object mainly are rice-stem borer, paddy stem borer.Formulation is mainly missible oil, and content has 20%, 30%, 40%.The Hostathion of a lot of manufacturer production, its product is cream preparation, and emulsifiable concentrate formulation need be with a large amount of toluene, dimethylbenzene, methyl alcohol equal solvent, and consumption is 40～70%, after these organic solvents are used in a large number, can the severe contamination water source, the destruction ecotope.From the angle of environmental protection and human kind sustainable development, greatly developing water-based pesticide formulation is inexorable trend.Need not or be the direction of present this those skilled in the art's research less with organic solvent as far as possible.Since the seventies in 20th century just the someone study microemulsion.Microemulsion is the transparent or semitransparent dispersion that oil ingredient-water-surfactant constitutes, and is the thermodynamically stable micelle dispersion that has swollen, and its character is as follows: (1) outward appearance is transparent uniform liquid; (2) drop is trickle, and its radius is generally 0.01～0.1 μ m; (3) physical stability is good.These character of microemulsion make it have higher commodity value.
Have the performance of above-mentioned excellence based on microemulsion, it is the problem that those skilled in the art tackle key problems that the former medicine of Hostathion is prepared into microemulsion.Organophosphorous pesticide is the poor stability in water generally, and former medicine of Hostathion and preparation are deposited under field conditions (factors) and are easily separated out precipitation, separate out precipitation and follow foul smell easilier in water, thereby how to find a kind of stabilizing agent efficiently, under the situation that reduces the solvent utilization rate, improving the stability of Hostathion in water, will be the key that improves triazophos micro-emulsion quality and application performance.It is open in 01137648.1 the patent documentation at application number that a kind of Hostathion stabilizing agent is arranged at present, it is that Hostathion is mixed with into triazophos micro-emulsion with emulsifier, stabilizing agent, solvent, cosolvent and water, and wherein stabilizing agent adopts one or more in epoxidized soybean oil, triphenyl phosphite, epoxychloropropane, tributyl phosphate, triethyl phosphate, the aceticanhydride.And the selected stabilizing agent of inventor herein is at least a in ammonium acetate, ammonium sulfate, potassium dihydrogen phosphate, diammonium hydrogen phosphate, urea, methyl urea, the ethyl carbamide.Comparatively speaking, the selected stabilizing agent of inventor herein has that the source is wide, and cheap, safe in utilization, Environmental compatibility is good, as advantages such as the stabilizing agent effect of triazophos micro-emulsion are better.
Summary of the invention
Purpose of the present invention is exactly the defective that exists at existing triazophos emulsifiable solution preparation, and a kind of triazophos micro-emulsion novel form is provided.It has solved existing product Hostathion resolution ratio height, easily separates out crystal settling, is difficult for storing problems such as Environmental compatibility difference.
Another object of the present invention just provides the preparation method of this triazophos micro-emulsion.
Technical scheme of the present invention is: it is made up of Hostathion, solvent, emulsifier, stabilizing agent and water, and wherein each weight percentages of components is:
Hostathion 5～25%, emulsifier 5～30%, solvent 1～10%, stabilizing agent 0.5～5%, surplus are water.Wherein, stabilizing agent is selected from least a in ammonium acetate, ammonium sulfate, potassium dihydrogen phosphate, diammonium hydrogen phosphate, urea, methyl urea, the ethyl carbamide.
The percentage by weight of stabilizing agent preferred 1%～3%.These several stabilizing agents be the inventor by a large amount of screenings, find through repeatedly contrast experiment, can effectively improve the stability of Hostathion in water, the Hostathion eduction rate is low, reduces the use of organic solvent simultaneously, and is little to environmental influence.Emulsifier is selected from least a in alkyl polyoxyethylene ether, fatty alcohol-polyoxyethylene ether, benzylphenol APEO, phenethyl phenol polyethenoxy ether, alkylphenol polyoxyethylene formaldehyde condensation products, phenethyl phenol polyethenoxy ether polyethenoxy ether, alcohol (phenol) ether sulfate, sodium alkyl benzene sulfonate, alkyl benzene calcium sulfonate, phenethyl phenol polyethenoxy ether phosphate, the sulphosuccinates.Preferred solvent is: phenethyl phenol polyethenoxy ether, alcohol (phenol) ether sulfate, alkyl benzene calcium sulfonate, phenethyl phenol polyethenoxy ether phosphate.
Solvent is selected from least a in methyl alcohol, ethanol, n-butanol, isobutanol, cyclohexanone, toluene, the dimethylbenzene.Preferred solvent is: ethanol, n-butanol, cyclohexanone, toluene.
The preparation method of triazophos micro-emulsion of the present invention, step is as follows:
Raw material: Hostathion 5～25% emulsifier 5～30%
Solvent 1～10% stabilizing agent 0.5～5%
Surplus is a water
(1) solvent and the former medicine of Hostathion are mixed, incorporation time is 15min～60min.
(2) adding emulsifier continues to be stirred to evenly.
(3) add entry and stabilizing agent and stir the triazophos micro-emulsion that 1～2h makes homogeneous phase transparent.
Want strict among the preparation method of the present invention and undertaken, otherwise can not form stable microemulsion agent dispersion system by charging sequence.
Triazophos micro-emulsion of the present invention is compared with existing cream preparation, has following outstanding advantage:
1, flash-point height, nonflammable, difficult blast, production, storing and safe in utilization;
2, significantly reduce the usage amount of organic solvent, organic solvent operating weight percentage only is 1～10%, thereby environmental pollution is little, to producing and user's murder by poisoning greatly alleviates, helps the improvement of eco-environmental quality;
3, the stabilizing agent among employing the present invention, stabilization is remarkable, and the Hostathion resolution ratio is low, does not produce crystal settling;
4, the particle of emulsion is ultra tiny, and is littler than common missible oil particle, and plant and insect cell are had good penetration, absorption ratio height, utilization rate of active components height;
5, be matrix with water, aboundresources is inexpensive, and product cost is low, and is less demanding to packaging material.
Embodiment
Embodiment 1:
At first solvent toluene 1kg and Hostathion stoste 5kg are carried out abundant mixed dissolution 25min, add emulsifier alkyl polyoxyethylene ether 4kg, phenethyl phenol polyethenoxy ether 6kg, alkyl benzene calcium sulfonate 4kg then, stir again, add running water 79.5kg and ammonium acetate 0.5kg at last, continue again to stir 1h, become the triazophos micro-emulsion of homogeneous transparent.
Embodiment 2:
Earlier solvent, n-butanol 1.5kg, cyclohexanone 1kg and the former medicine 10kg of Hostathion are carried out abundant mixed dissolution 25min, add emulsifier benzylphenol APEO 8kg, ether alcohol sulfate 3kg, sodium alkyl benzene sulfonate 3kg then, stir again, add running water 72kg and stabilizing agent ammonium sulfate 1kg, urea 0.5kg at last, continue again to stir 1.5h, become the triazophos micro-emulsion of homogeneous transparent.
Embodiment 3:
Earlier etoh solvent 4kg and the former medicine 15kg of Hostathion are carried out abundant mixed dissolution 25min, add emulsifier alkyl benzene calcium sulfonate 4kg, phenethyl phenol polyethenoxy ether 5kg, sulphosuccinates 5kg then, stir again, add running water 66kg and stabilizing agent methyl urea 1kg at last, continue again to stir 1h, become the triazophos micro-emulsion of homogeneous transparent.
Embodiment 4:
Earlier solvent, n-butanol 4.5kg and the former medicine 20kg of Hostathion are carried out abundant mixed dissolution 25min, emulsifier alkyl benzene calcium sulfonate 4kg, benzylphenol APEO 6kg, phenolic ether sulphate 5kg, in the suction preparation still, stir equal, add running water 58.5kg and stabilizing agent urea 2kg at last, continue again to stir 1.5h, become the triazophos micro-emulsion of homogeneous transparent.
Embodiment 5:
Earlier solvent cyclohexanone 5kg and the former medicine 20kg of Hostathion are carried out abundant mixed dissolution 25min, add emulsifier alkyl benzene calcium sulfonate 5kg, phenethyl phenol polyethenoxy ether polyethenoxy ether 8kg then, phenethyl phenol polyethenoxy ether phosphate 5kg, stir equal again, add running water 55kg and stabilizing agent diammonium hydrogen phosphate 1kg, ethyl carbamide 1kg at last, continue again to stir 2h, become the triazophos micro-emulsion of homogeneous transparent.
Embodiment 6
Earlier the former medicine 10kg of solvent acetone 1kg, butanone 0.5kg, cyclohexanone 0.5kg, toluene 0.5kg, dimethylbenzene 0.5kg, ethylbenzene 1kg and Hostathion is carried out abundant mixed dissolution 25min, add emulsifier phenolic ether sulphate 10kg, alkyl benzene calcium sulfonate 4kg then, stir again, add entry 70.5kg and stabilizing agent methyl urea 0.5kg, ethyl carbamide 0.5kg at last, urea 0.5kg, continue again to stir 1.5h, become the triazophos micro-emulsion of homogeneous transparent.
Embodiment 7
Earlier the former medicine 5kg of solvent toluene 1kg, dimethylbenzene 1kg, ethylbenzene 1kg, methyl naphthalene 2kg and Hostathion is carried out abundant mixed dissolution 25min, add emulsifier alkyl benzene calcium sulfonate 3kg, phenethyl phenol polyethenoxy ether phosphate 11kg then, stir again, add running water 75.5kg and ammonium acetate 0.2kg, potassium dihydrogen phosphate 0.2kg, diammonium hydrogen phosphate 0.1kg at last, continue again to stir 1h, become the triazophos micro-emulsion of homogeneous transparent.
Embodiment 8
With solvent toluene 3kg, methyl naphthalene 5kg, and the former medicine 10kg of Hostathion carry out abundant mixed dissolution 40min, add emulsifier alkyl benzene calcium sulfonate 3kg, phenethyl phenol polyethenoxy ether phosphate 11kg then, stir again, add stabilizing agent ammonium acetate 0.3kg, ammonium sulfate 0.2kg, potassium dihydrogen phosphate 0.5kg and running water 67kg at last, continue to stir 1.5h again, become the triazophos micro-emulsion of homogeneous transparent.
Claims (5)
1. triazophos micro-emulsion, it is made up of Hostathion, solvent, emulsifier, stabilizing agent and water, and each weight percentages of components is:
Hostathion 5～25% solvents 1～10%
Emulsifier 5～30% stabilizing agents 0.5～5%
Surplus is a water
Wherein, stabilizing agent is selected from least a in ammonium acetate, ammonium sulfate, potassium dihydrogen phosphate, diammonium hydrogen phosphate, urea, methyl urea, the ethyl carbamide, and emulsifier is selected from least a in alkyl polyoxyethylene ether, fatty alcohol-polyoxyethylene ether, benzylphenol APEO, phenethyl phenol polyethenoxy ether, alkylphenol polyoxyethylene formaldehyde condensation products, phenethyl phenol polyethenoxy ether polyethenoxy ether, alcohol or phenolic ether sulphate, alkylbenzenesulfonate, phenethyl phenol polyethenoxy ether phosphate, the sulphosuccinates.
2. triazophos micro-emulsion according to claim 1, wherein, the percentage by weight of stabilizing agent is 1～3%.
3. triazophos micro-emulsion according to claim 1, wherein emulsifier is: at least a in phenethyl phenol polyethenoxy ether, alcohol or phenolic ether sulphate, alkyl benzene calcium sulfonate, the phenethyl phenol polyethenoxy ether phosphate.
4. triazophos micro-emulsion according to claim 1, solvent are selected from least a in methyl alcohol, ethanol, n-butanol, isobutanol, cyclohexanone, toluene, the dimethylbenzene.
5. the preparation method of described each triazophos micro-emulsion of claim 1-4, its step is as follows: the former medicine of Hostathion is dissolved in the solvent, adds emulsifier then and continue to be stirred to evenly, add entry and stabilizing agent at last and stir and made in 1～2 hour.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101248616A CN100396184C (en) | 2006-10-26 | 2006-10-26 | Hostathion micro emulsion and its preparing method |
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| CNB2006101248616A CN100396184C (en) | 2006-10-26 | 2006-10-26 | Hostathion micro emulsion and its preparing method |
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| CN100396184C true CN100396184C (en) | 2008-06-25 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101258848B (en) * | 2008-04-10 | 2011-02-09 | 浙江大学 | Triazophos-containing insecticidal solid microemulsion and preparation thereof |
| CN102154647A (en) * | 2011-03-23 | 2011-08-17 | 浙江阿克希龙舜华铝塑业有限公司 | Acid etching treatment solution and treatment method for aluminum and aluminum alloy products |
| CN102845462A (en) * | 2011-06-29 | 2013-01-02 | 南通丰田化工有限公司 | Triazophos.chlorpyrifos micro-emulsion and its preparation method |
| CN102428913B (en) * | 2011-11-11 | 2014-01-22 | 山东一览科技有限公司 | Microemulsion insecticide and production process thereof |
| WO2020049493A1 (en) * | 2018-09-06 | 2020-03-12 | Pi Industries Ltd. | Stable agrochemical composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1593147A (en) * | 2004-07-13 | 2005-03-16 | 江苏粮满仓农化有限公司 | Triazophos microemulsion and preparation method thereof |
| US20050220834A1 (en) * | 2004-03-24 | 2005-10-06 | Wang Xiao D | Agricultural chemical microemulsion |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050220834A1 (en) * | 2004-03-24 | 2005-10-06 | Wang Xiao D | Agricultural chemical microemulsion |
| CN1593147A (en) * | 2004-07-13 | 2005-03-16 | 江苏粮满仓农化有限公司 | Triazophos microemulsion and preparation method thereof |
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