CN101632354A - Method for preparing pesticide emulsion in water - Google Patents
Method for preparing pesticide emulsion in water Download PDFInfo
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- CN101632354A CN101632354A CN200910023780A CN200910023780A CN101632354A CN 101632354 A CN101632354 A CN 101632354A CN 200910023780 A CN200910023780 A CN 200910023780A CN 200910023780 A CN200910023780 A CN 200910023780A CN 101632354 A CN101632354 A CN 101632354A
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Abstract
The invention discloses a method for preparing pesticide emulsion in water (EW). The method comprises the following steps: evenly mixing anti-freezing agent and water by a certain proportion to obtain an aqueous phase, and adding solid particles to the mixture of liquid or solid technical-grade pesticide and organic solvent by a certain proportion and evenly mixing to obtain an oil phase; or alternatively, evenly mixing solid particles, anti-freezing agent and water by a certain proportion to obtain an aqueous phase, and using the mixture of liquid or solid technical-grade pesticide and organic solvent as an oil phase; adding the oil phase to the aqueous phase or adding the aqueous phase to the oil phase while stirring; and further homogenizing by a homogenizer to obtain the pesticide EW with stable solid particles. By substituting solid particles for surfactant, the invention can reduce the environmental pollution caused by pesticide EW products and reduce the production cost of the pesticide EW at the same time.
Description
Technical field
The invention belongs to chemical technology field, relate to a kind of preparation method of pesticide emulsion in water, particularly relate to the preparation method of the stable pesticide emulsion in water of a kind of solids.
Background technology
Along with the continuous increase and the environmental administration of environmental protection pressure makes severeer rules to the safety and the environmental protection of agricultural chemicals, force people to develop the pesticides new formulation of safety, environment-friendly type.Replace oil-based formulation missible oil with aqueous emulsion, become the direction of pesticidal preparations development in the world.To be the former medicine of liquid pesticidal that makes with liquid or with solvent be scattered in preparation in the water with the droplet of 0.5-1.5 micron to aqueous emulsion, and outward appearance is a milky milk shape liquid.Aqueous emulsion only uses on a small quantity or even do not use organic solvent, and is more safer than missible oil, and nonirritant and very little to people's dermal toxicity during use is a kind of excellent pesticides new formulation that replaces missible oil.
But contain surfactant or polymer substance at present in the aqueous emulsion as emulsifier and stabilizing agent, still environment is had certain pollution, make that also the cost of aqueous emulsion is still higher.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned deficiency of the prior art, a kind of preparation method based on the stable pesticide emulsion in water of solids is provided, to reduce of the pollution of pesticide emulsion in water product, also reduce the production cost of pesticide emulsion in water simultaneously to environment.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of preparation method of pesticide emulsion in water, it is characterized in that, the raw material of preparation pesticide emulsion in water is formed: the mixture 5-60% of the former medicine of liquid pesticidal or former medicine of solid pesticide and organic solvent, solids 0.5-10%, antifreeze 3-20%, surplus is a water, the mass ratio of former medicine of solid pesticide and organic solvent is 1: 1-2; Preparation process is: antifreeze and water are mixed make water, solids are added mix in the mixture of the former medicine of liquid pesticidal or former medicine of solid pesticide and organic solvent and make oil phase, perhaps solids, antifreeze and water are mixed and make water, mixture with the former medicine of liquid pesticidal or former medicine of solid pesticide and organic solvent is an oil phase, under agitation described oil phase is added described aqueous phase or described water is added in the described oil phase, behind the homogenizer homogeneous, promptly get the stable pesticide emulsion in water of solids again.
The former medicine of described liquid pesticidal is alachlor, Acetochlor, butachlor, propisochlor or the former medicine of isopropyl methoxalamine liquid pesticidal.
The former medicine of described solid pesticide is Tebuconazole or the former medicine of own azoles alcohol solid pesticide.
In described organic solvent ethanol, butanols, toluene, dimethylbenzene and the cyclohexane one or more.
Described solids are one or more in silica, alundum (Al, imvite, zinc oxide, titanium dioxide and the coal dust.
Described antifreeze is one or more in ethylene glycol, propane diols, glycerine, urea and the ammonium sulfate.
Sometimes need in the former medicine of liquid pesticidal (oil phase), (or in mixture of former medicine of solid pesticide and organic solvent) optionally add dispersants such as sorbitan monooleate APEO, polyvinyl alcohol, phenethyl phenol polyethenoxy ether phenylsulfate, the consumption of dispersant is 10～60% of the former medicine quality of liquid pesticidal (or mixture quality of former medicine of solid pesticide and organic solvent), can be used alone or as a mixture.Sometimes need optionally to add thickeners such as carboxymethyl cellulose, xanthans, PAA, Sodium Polyacrylate, Magnesiumaluminumsilicate at aqueous phase, the consumption of thickener is 2.5～22.3% of a water quality, can be used alone or as a mixture.
The present invention compared with prior art has the following advantages: the present invention has reduced the pollution of pesticide emulsion in water product to environment with solids substitution list surface-active agent, has also reduced the production cost of pesticide emulsion in water simultaneously.
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment
Embodiment 1
Get alachlor 12 gram and 0.1 gram silicon dioxide granule mix oil phase, with 1 gram ethylene glycol add mix in the 6.9 gram water water.Oil phase is under agitation added aqueous phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 60% alachlor.
Embodiment 2
Get Acetochlor 2 gram and be oil phase, with 0.5 gram alundum (Al particle, 2 gram propane diols add mix in the 5.5 gram water water.Water is under agitation added in the oil phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 20% Acetochlor.
Embodiment 3
Get propisochlor 1 gram and be oil phase, with 0.5 gram imvite particle, 3 gram glycerine add mix in the 15.5 gram water water.Oil phase is under agitation added aqueous phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 5% propisochlor.
Embodiment 4
Get butachlor 5 gram and 2 gram coal dusts mix oil phase, with 4 gram urea add mix in the 39 gram water water.Water is under agitation added in the oil phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 10% butachlor.
Embodiment 5
Get isopropyl methoxalamine 18 gram and 2 gram improved silica mix particles even oil phase, with 1 gram ethylene glycol add mix in the 9 gram water water.Oil phase is under agitation added aqueous phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 60% isopropyl methoxalamine.
Embodiment 6
Get Acetochlor 2 gram and 1 gram sorbitan monooleate APEO, 0.5 gram zinc oxide mix particles even oil phase, with 1 gram propane diols, 1 gram Magnesiumaluminumsilicate add mix in the 4.5 gram water water.Water is under agitation added in the oil phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 20% Acetochlor.
Embodiment 7
Get alachlor 10 gram and 1 gram phenethyl phenol polyethenoxy ether phenylsulfate mix oil phase, with 1 gram TiO 2 particles, 1 gram ethylene glycol and 0.5 gram carboxymethyl cellulose add mix in the 6.5 gram water water.Oil phase is under agitation added aqueous phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 50% alachlor.
Embodiment 8
Get propisochlor 1 gram, 0.6 gram phenethyl phenol polyethenoxy ether phenylsulfate and 0.5 gram imvite mix particles even oil phase, with 3 gram glycerine, 0.4 gram ammonium sulfate add 14.5 restrain mix in the water water.Oil phase is under agitation added aqueous phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 5% propisochlor.
Embodiment 9
Get butachlor 5 gram and 2 gram modification coal dusts mix oil phase, with 1 gram Sodium Polyacrylate, 4 gram ammonium sulfate add mix in the 38 gram water water.Water is under agitation added in the oil phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 10% butachlor.
Embodiment 10
Get isopropyl methoxalamine 18 gram and 2 gram TiO 2 particles mix oil phase, with 0.6 gram xanthans, 1 gram ethylene glycol add mix in the 8.4 gram water water.Oil phase is under agitation added aqueous phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 60% isopropyl methoxalamine.
Embodiment 11
Get Tebuconazole 1 gram dissolve in the 1 gram butanols oil phase, with 0.5 gram alundum (Al particle, 2 gram propane diols add mix in the 5.5 gram water water.Water is under agitation added in the oil phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 10% Tebuconazole.
Embodiment 12
Get own azoles alcohol 1 gram dissolve in the 1 gram ethanol oil phase, with 0.5 gram alundum (Al particle, 2 gram propane diols add mix in the 5.5 gram water water.Water is under agitation added in the oil phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 10% own azoles alcohol.
Embodiment 13
Get Tebuconazole 1 gram dissolve in the 1 gram toluene oil phase, with 0.5 gram silicon dioxide granule, 2 gram propane diols add mix in the 5.5 gram water water.Water is under agitation added in the oil phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 10% Tebuconazole.
Embodiment 14
Get Tebuconazole 1 gram dissolve in the 2 gram cyclohexanes oil phase, with 0.5 gram coal dust, 2 gram propane diols add mix in the 14.5 gram water water.Water is under agitation added in the oil phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 5% Tebuconazole.
Embodiment 15
Get own azoles alcohol 1 gram dissolve in the 1 gram dimethylbenzene oil phase, with 0.5 gram alundum (Al particle, 2 gram propane diols add mix in the 5.5 gram water water.Water is under agitation added in the oil phase, be added to high pressure homogenizer then and homogenize, promptly get the aqueous emulsion that contains 10% own azoles alcohol.
Embodiment 1 has been carried out the rape field weeding test of pesticide effectiveness, alachlor aqueous emulsion 50 gram/hectares.Drug effect result shows: the alachlor aqueous emulsion has remarkable result to grassy weed, and integrated control effect is more than 71%, and the fresh weight preventive effect is more than 90%.
Embodiment 2 has been carried out the rape field weeding test of pesticide effectiveness, Acetochlor aqueous emulsion 150 gram/hectares.Drug effect result shows: the Acetochlor aqueous emulsion has remarkable result to grassy weed, and integrated control effect is more than 75%, and the fresh weight preventive effect is more than 90%.
Embodiment 3 has been carried out the rape field weeding test of pesticide effectiveness, propisochlor aqueous emulsion 180 gram/hectares.Drug effect result shows: the propisochlor aqueous emulsion has remarkable result to grassy weed, and integrated control effect is more than 70%, and the fresh weight preventive effect is more than 90%.
Embodiment 4 has been carried out the rape field weeding test of pesticide effectiveness, butachlor aqueous emulsion 100 gram/hectares.Drug effect result shows: the butachlor aqueous emulsion has remarkable result to grassy weed, and integrated control effect is more than 69%, and the fresh weight preventive effect is more than 88%.
Embodiment 5 has been carried out the rape field weeding test of pesticide effectiveness, isopropyl methoxalamine aqueous emulsion 50 gram/hectares.Drug effect result shows: the isopropyl methoxalamine aqueous emulsion has remarkable result to grassy weed, and integrated control effect is more than 69%, and the fresh weight preventive effect is more than 87%.
Embodiment 6 has been carried out the rape field weeding test of pesticide effectiveness, Acetochlor aqueous emulsion 50 gram/mus.Drug effect result shows: the Acetochlor aqueous emulsion has remarkable result to grassy weed, and integrated control effect is more than 73%, and the fresh weight preventive effect is more than 91%.
Embodiment 7 has been carried out the rape field weeding test of pesticide effectiveness, alachlor aqueous emulsion 50 gram/hectares.Drug effect result shows: the alachlor aqueous emulsion has remarkable result to grassy weed, and integrated control effect is more than 70%, and the fresh weight preventive effect is more than 89%.
Embodiment 8 has been carried out the rape field weeding test of pesticide effectiveness, propisochlor aqueous emulsion 250 gram/hectares.Drug effect result shows: the propisochlor aqueous emulsion has remarkable result to grassy weed, and integrated control effect is more than 74%, and the fresh weight preventive effect is more than 90%.
Embodiment 9 has been carried out the rape field weeding test of pesticide effectiveness, butachlor aqueous emulsion 250 gram/hectares.Drug effect result shows: the butachlor aqueous emulsion has remarkable result to grassy weed, and integrated control effect is more than 70%, and the fresh weight preventive effect is more than 91%.
Embodiment 10 has been carried out the rape field weeding test of pesticide effectiveness, isopropyl methoxalamine aqueous emulsion 50 gram/hectares.Drug effect result shows: the isopropyl methoxalamine aqueous emulsion has remarkable result to grassy weed, and integrated control effect is more than 68%, and the fresh weight preventive effect is more than 89%.
Embodiment 11 has been carried out the paddy field test of pesticide effectiveness, tebuconazole aqueous emulsion 60 gram/hectares.Drug effect result shows: the average preventive effect to rice sheath blight disease, false smut is 80.2%.
Embodiment 12 has been carried out the paddy field test of pesticide effectiveness, hexaconazole aqueous emulsion 60 gram/hectares.Drug effect result shows: the average preventive effect to rice sheath blight disease, false smut is 79.9%.
Embodiment 13 has been carried out the paddy field test of pesticide effectiveness, tebuconazole aqueous emulsion 60 gram/hectares.Drug effect result shows: the average preventive effect to rice sheath blight disease, false smut is 82.1%.
Embodiment 14 has been carried out the paddy field test of pesticide effectiveness, tebuconazole aqueous emulsion 100 gram/hectares.Drug effect result shows: the average preventive effect to rice sheath blight disease, false smut is 80.9%.
Embodiment 15 has been carried out the paddy field test of pesticide effectiveness, hexaconazole aqueous emulsion 60 gram/hectares.Drug effect result shows: the average preventive effect to rice sheath blight disease, false smut is 81.3%.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, everyly any simple modification that above embodiment did, change and equivalence changed, all still belong in the protection domain of technical solution of the present invention according to the technology of the present invention essence.
Claims (6)
1. the preparation method of a pesticide emulsion in water, it is characterized in that, the raw material of preparation pesticide emulsion in water is formed: the mixture 5-60% of the former medicine of liquid pesticidal or former medicine of solid pesticide and organic solvent, solids 0.5-10%, antifreeze 3-20%, surplus is a water, and the mass ratio of former medicine of solid pesticide and organic solvent is 1: 1-2; Preparation process is: antifreeze and water are mixed make water, solids are added mix in the mixture of the former medicine of liquid pesticidal or former medicine of solid pesticide and organic solvent and make oil phase, perhaps solids, antifreeze and water are mixed and make water, mixture with the former medicine of liquid pesticidal or former medicine of solid pesticide and organic solvent is an oil phase, under agitation described oil phase is added described aqueous phase or described water is added in the described oil phase, behind the homogenizer homogeneous, promptly get the stable pesticide emulsion in water of solids again.
2. according to the preparation method of the described a kind of pesticide emulsion in water of claim 1, it is characterized in that: the former medicine of described liquid pesticidal is alachlor, Acetochlor, butachlor, propisochlor or the former medicine of isopropyl methoxalamine liquid pesticidal.
3. according to the preparation method of the described a kind of pesticide emulsion in water of claim 1, it is characterized in that: the former medicine of described solid pesticide is Tebuconazole or the former medicine of own azoles alcohol solid pesticide.
4. according to the preparation method of the described a kind of pesticide emulsion in water of claim 1, it is characterized in that: one or more in described organic solvent ethanol, butanols, toluene, dimethylbenzene and the cyclohexane.
5. according to the preparation method of the described a kind of pesticide emulsion in water of claim 1, it is characterized in that: described solids are one or more in silica, alundum (Al, imvite, zinc oxide, titanium dioxide and the coal dust.
6. according to the preparation method of the described a kind of pesticide emulsion in water of claim 1, it is characterized in that: described antifreeze is one or more in ethylene glycol, propane diols, glycerine, urea and the ammonium sulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910023780A CN101632354A (en) | 2009-09-03 | 2009-09-03 | Method for preparing pesticide emulsion in water |
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| CN200910023780A CN101632354A (en) | 2009-09-03 | 2009-09-03 | Method for preparing pesticide emulsion in water |
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| CN101632354A true CN101632354A (en) | 2010-01-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102308788A (en) * | 2011-07-07 | 2012-01-11 | 中国农业大学 | Insecticidal agricultural pesticide preparation using ionic liquid as cosolvent and method for preparing insecticidal agricultural pesticide preparation |
| CN102669091A (en) * | 2012-05-31 | 2012-09-19 | 大连瑞泽生物科技有限公司 | Ethachlor emulsion in water and preparation method thereof |
| CN104222074A (en) * | 2014-08-25 | 2014-12-24 | 西安近代化学研究所 | S-metolachlor emulsion in water and preparation method of s-metolachlor emulsion in water |
-
2009
- 2009-09-03 CN CN200910023780A patent/CN101632354A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102308788A (en) * | 2011-07-07 | 2012-01-11 | 中国农业大学 | Insecticidal agricultural pesticide preparation using ionic liquid as cosolvent and method for preparing insecticidal agricultural pesticide preparation |
| CN102669091A (en) * | 2012-05-31 | 2012-09-19 | 大连瑞泽生物科技有限公司 | Ethachlor emulsion in water and preparation method thereof |
| CN104222074A (en) * | 2014-08-25 | 2014-12-24 | 西安近代化学研究所 | S-metolachlor emulsion in water and preparation method of s-metolachlor emulsion in water |
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Application publication date: 20100127 |