CN101755739A - Pesticide emulsion in water and preparation method thereof - Google Patents
Pesticide emulsion in water and preparation method thereof Download PDFInfo
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- CN101755739A CN101755739A CN200910110566A CN200910110566A CN101755739A CN 101755739 A CN101755739 A CN 101755739A CN 200910110566 A CN200910110566 A CN 200910110566A CN 200910110566 A CN200910110566 A CN 200910110566A CN 101755739 A CN101755739 A CN 101755739A
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Abstract
The invention provides a pesticide emulsion in water and a preparation method thereof. The pesticide emulsion in water comprises an effective quantity of active ingredient, namely, amistar, an effective quantity of adjuvant acceptable for the emulsion in water, an effective quantity of organic solvent capable of dissolving amistar and water, wherein, the adjuvant comprises an effective quantity of synergistic adjuvants such as salicylic acid and/or turpentine. The preparation method includes the steps: firstly, preparing aqueous phase and oil phase; and secondly, evenly mixing the aqueous phase and the oil phase and ultrasonic emulsifying the mixture into the emulsion in water. In the invention, an effective quantity of synergistic adjuvants such as the salicylic acid and/or turpentine are added into the pesticide emulsion in water, thereby improving the control efficiency of amistar emulsion in water and reducing the amistar working concentration and the cost.
Description
Technical field
The invention belongs to pesticide field, relate to a kind of pesticide emulsion in water and preparation method thereof, relate in particular to aqueous emulsion of a kind of Fluoxastrobin and preparation method thereof.
Background technology
Fluoxastrobin is a methoxy acrylic bactericide, efficiently, wide spectrum, nearly all mycota (Ascomycotina, Basidiomycotina, Mastigomycotina and Deuteromycotina) disease such as powdery mildew, rust, glume blight, net blotch, downy mildew, rice blast etc. are all had good activity.Fluoxastrobin has protection, treats, roots out, infiltration, systemic activity, is mainly used in cereal, paddy rice, peanut, grape, potato, fruit tree, vegetables, coffee, lawn etc.
At present, the Fluoxastrobin formulation of producing and using mostly is suspending agent and missible oil, also there is the azoxystrobin water emulsion prescription open, but existing azoxystrobin water emulsion still need use a certain amount of aromatic hydrocarbons organic solvent, and do not add suitable builder, its control efficiency is relatively poor, and the Fluoxastrobin application concentration is big, control cost height.
Current, domestic pesticide liquid body preparation all needs to use not environmental protection organic solvents such as aromatic hydrocarbons basically, these organic solvents mainly contain benzene,toluene,xylene, methyl alcohol, dimethyl formamide, dimethyl sulfoxide (DMSO), acetone etc., the annual consumption of " triphen " is up to ten thousand tons of 20-30, but, it is low, inflammable and explosive and to shortcomings such as human and environment toxicity height that these solvents have a flash-point, organic solvent and auxiliary agent can all enter environment in the agricultural chemicals use, when causing serious environment pollution, also can damage health.1992, U.S. government put into effect the regulation of organic solvents such as forbidding toluene, dimethylbenzene in pesticidal preparations, and after this, European countries have also put into effect similar regulation in succession; By the end of in February, 2006,38 kinds of organic solvents that use in the Pesticidal products such as China Taiwan agricultural commission paraxylene, aniline, benzene, carbon tetrachloride, trichloro-ethylene management of having carried out limiting the quantity of, the content of dimethylbenzene, cyclohexanone can not surpass 10% in the agricultural chemicals finished product, dimethyl formamide and methyl alcohol should be less than 30%, and the content of ethylbenzene can not surpass 2%.Therefore need using environment-friendly type solvent to substitute not environmental protection such as aromatic hydrocarbons organic solvent commonly used, improve the friendly of pesticidal preparations environment.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of pesticide emulsion in water, and be intended to solve existing azoxystrobin water emulsion and still need use not environmental protection organic solvents such as aromatic hydrocarbons, and control efficiency is poor, and the problem that the Fluoxastrobin working concentration is big, cost is high.
Another purpose of the embodiment of the invention is to provide a kind of preparation method of above-mentioned pesticide emulsion in water.
The pesticide emulsion in water of the embodiment of the invention comprises the organic solvent that can dissolve Fluoxastrobin of the aqueous emulsion acceptable assistant and the effective dose of effective amount of actives Fluoxastrobin, effective dose, comprises the builder salicylic acid and/or the turpentine oil of effective dose in the auxiliary agent.
The preparation method of the pesticide emulsion in water of the embodiment of the invention comprises the steps:
(1) with Fluoxastrobin, organic solvent, emulsifier adds in the reactor, mixes, and forms oil phase; Thickener and water are mixed, form water;
Wherein, aqueous phase evenly is mixed with salicylic acid; And/or
Evenly be mixed with turpentine oil in the oil phase;
(2) water is evenly mixed with oil phase, ultrasonic emulsification forms aqueous emulsion.
Compared with prior art, add builder salicylic acid and/or the turpentine oil that effective dose is arranged in the technique scheme.
Salicylic acid is a septichen, claims " antiphlogistic " of plant again, and microorganism is had antibiotic property, extensively is present in the higher plant.Salicylic acid is again a kind of phenols hormone, is also bringing into play important physiological action in plant corpus, can not only regulate some growth and development processes of plant, also the plant antibiont coerce with abiotic stress in bringing into play important effect.Plant is after being subjected to virus, bacterial invasion, the salicylic acid level that is infected the position can significantly increase, the protect from infection diffusion at position of downright bad scab occurs, the salicylic acid content of non-infection site also can raise in addition, thereby makes it infect the generation resistance again to pathogen.
Turpentine oil is that main component is terpenes (as an australene) by distillation or other method liquid that rosin extracted from the coniferale plant, and turpentine oil belongs to the high-flash flammable liquid, and penetration power is very strong.
In the pesticide emulsion in water of the embodiment of the invention, added the builder salicylic acid and/or the turpentine oil of effective dose, improved the control efficiency of azoxystrobin water emulsion, reduced the Fluoxastrobin working concentration and reduced cost.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The embodiment of the invention provides a kind of and existing azoxystrobin water emulsion to compare, the feature of environmental protection and the control efficiency of azoxystrobin water emulsion have been improved, reduce the Fluoxastrobin working concentration and reduced the pesticide emulsion in water of cost, for this reason, in the embodiment of the invention pesticide emulsion in water, the organic solvent that can dissolve Fluoxastrobin that comprises the aqueous emulsion acceptable assistant and the effective dose of effective amount of actives Fluoxastrobin, effective dose comprises the builder salicylic acid and/or the turpentine oil of effective dose in this auxiliary agent.
Further, the pesticide emulsion in water of the embodiment of the invention, by weight percentage, wherein, contain the water of 5～35% Fluoxastrobins, 5～25% organic solvents, 2～15% emulsifier, 0.5～5% builder, 1～5% antifreeze, 0.2～5% thickener, 0～0.3% defoamer and surplus.
Further, in the above-mentioned pesticide emulsion in water, solvent is chosen one or more in D-citrene, australene, N-Methyl pyrrolidone and N-octylpyrrolidone wantonly.Owing to do not use aromatic hydrocarbons or N, the organic solvent that safeties such as dinethylformamide, dimethyl sulfoxide (DMSO) are not high has reduced potential safety hazard.
Further, in the above-mentioned pesticide emulsion in water, emulsifier is chosen selfpolyoxyethylene polyoxypropylene block copolymers, C wantonly
12-14Alcohol APEO, polyoxyethylene stearyl acyl ether, polyoxypropylene stearoyl ether, sorbitol polyoxyethylene ether, sorbierite polyethenoxy ether, castor oil polyoxyethylene ether, ethylene glycol APEO, anhydrosorbitol acid anhydride oleate, anhydrous sorbitol acid anhydride trioleate, alkane polyoxyethylene 20 sorbitan monooleate, aliphatic alcohol polyoxyvinethene phosphate, C
12-14In polyoxyethylene ether phosphate, polyxyethylated sulfuric ester and the dialkyl group sulfonic acid succinate one or more because above emulsifier all has biodegradability, have reduced environmental pollution.
Further, in the above-mentioned pesticide emulsion in water, antifreeze is the antifreeze that this area is used always, for example, optional from ethylene glycol, propane diols, hexylene glycol, diethylene glycol (DEG), 1,3-butanediol, molecular weight are one or more in 2000～4000 polyethylene glycol, glycerine, urea, isobutanol, n-butanol, isopropyl alcohol, isooctanol and the sorbierite.
Further, in the above-mentioned pesticide emulsion in water, thickener is the thickener that this area is used always, for example, and optional in xanthans, polyvinyl alcohol, aluminium-magnesium silicate, polyvinylpyrrolidone, gum Arabic and acrylate one or more.
Further, in the above-mentioned pesticide emulsion in water, defoamer is the defoamer that this area is used always, and is for example, optional from methyl polysiloxane and/or modified methyl polysiloxanes.
The embodiment of the invention also provides a kind of preparation method of above-mentioned pesticide emulsion in water, comprises the steps:
(1) with Fluoxastrobin, organic solvent, emulsifier adds in the reactor, mixes, and forms oil phase; Thickener and water are mixed, form water;
Wherein, described aqueous phase evenly is mixed with salicylic acid; And/or
Evenly be mixed with turpentine oil in the described oil phase;
(2) water is evenly mixed with oil phase, ultrasonic emulsification forms aqueous emulsion.
Further, above-mentioned aqueous phase also evenly is mixed with antifreeze and defoamer.
Further, under stirring condition, water and oil phase being mixed, is that 10～50kHz, power are under the condition of 100～1000W in resonant frequency, and ultrasonic emulsification 5～15 minutes forms described aqueous emulsion.Ultrasonic emulsification is continued to use emulsification method with screw, colloid mill and high shear and homogenizer and is compared, and has that emulsion quality is good, production efficiency is high, low cost and other advantages.
The Fluoxastrobin usage amount is and does not roll over hundred former survival dose in the following specific embodiment, and wherein, the former medicine content of Fluoxastrobin is 93% weight.
Embodiment 1
Take by weighing 268.82 kilograms of Fluoxastrobins, 80 kilograms of D-citrenes, 80 kilograms of N-Methyl pyrrolidone, 20 kilograms of polyoxyethylene polyoxypropylene block copolymers, 20 kilograms of C12-14 alcohol APEOs, 30 kilograms of aliphatic alcohol polyoxyvinethene phosphates, mix and obtain oil phase; Take by weighing 30 kilograms of ethylene glycol, 3 kilograms of xanthans, 10 kilograms of salicylic acids, 1 kilogram of methyl polysiloxane, 457.18 kilograms in water, mix and obtain water; Be under 2000 rev/mins the stirring condition, water to be added oil phase at rotating speed.In resonant frequency is that 25kHz, power are under the condition of 500W, and ultrasonic emulsification 8 minutes forms 1000 kilogram of 25% Fluoxastrobin emulsion.
This example Fluoxastrobin emulsion the results are shown in Table 1 carrying out carrying out the low-temperature stability check under heat storage, 0 ± 2 ℃ and-15 ± 2 ℃ of conditions under 54 ± 2 ℃ of conditions.As can be known from Table 1, this example Fluoxastrobin emulsion has good cold and hot stable storage performance, and storage at normal temperature can be stablized more than 3 years.
This example of table 1 Fluoxastrobin emulsion stability result of the test
| Storage temperature | Stored 14 days | Stored 30 days | Stored 180 days |
| ??54±2℃ | Fluoxastrobin resolution ratio 0.7% heat storage stability is qualified | Fluoxastrobin resolution ratio 1.4% heat storage stability is qualified | Fluoxastrobin resolution ratio 2.5% heat storage stability is qualified |
| 0 ± 2 ℃ (remarks) | It is qualified to return to room temperature | It is qualified to return to room temperature | It is qualified to return to room temperature |
| -15 ± 2 ℃ (remarks) | It is qualified to return to room temperature | It is qualified to return to room temperature | It is qualified to return to room temperature |
Remarks: 0 ± 2 ℃ is after returning to room temperature with sample survey with-15 ± 2 ℃ of low-temperature stabilities checks, the mild agitation test specimen, and no visible particles and grease are as the criterion of acceptability of check.
Embodiment 2
Take by weighing 268.82 kilograms of Fluoxastrobins, 80 kilograms of D-citrenes, 80 kilograms of N-Methyl pyrrolidone, 20 kilograms of polyoxyethylene polyoxypropylene block copolymers, 15 kilograms of C12-14 alcohol APEOs, 30 kilograms of aliphatic alcohol polyoxyvinethene phosphates, mix and obtain oil phase; Take by weighing 30 kilograms of ethylene glycol, 30 kilograms of salicylic acids, 3 kilograms of xanthans, 1 kilogram of methyl polysiloxane, 442.18 kilograms in water, mix and obtain water; Be under 2000 rev/mins the stirring condition, water to be added oil phase at rotating speed.In resonant frequency is that 25kHz, power are under the condition of 500W, and ultrasonic emulsification 8 minutes forms 1000 kilogram of 25% Fluoxastrobin emulsion.
This example Fluoxastrobin emulsion the results are shown in Table 2 carrying out carrying out the low-temperature stability check under heat storage, 0 ± 2 ℃ and-15 ± 2 ℃ of conditions under 54 ± 2 ℃ of conditions.As can be known from Table 2, this example Fluoxastrobin emulsion has good cold and hot stable storage performance, and storage at normal temperature can be stablized more than 3 years.
This example of table 2 Fluoxastrobin emulsion stability result of the test
| Storage temperature | Stored 14 days | Stored 30 days | Stored 180 days |
| ??54±2℃ | Fluoxastrobin resolution ratio 0.7% heat storage stability is qualified | Fluoxastrobin salt resolution ratio 1.5% heat storage stability is qualified | Fluoxastrobin resolution ratio 2.8% heat storage stability is qualified |
| 0 ± 2 ℃ (remarks) | It is qualified to return to room temperature | It is qualified to return to room temperature | It is qualified to return to room temperature |
| -15 ± 2 ℃ (remarks) | It is qualified to return to room temperature | It is qualified to return to room temperature | It is qualified to return to room temperature |
Remarks: 0 ± 2 ℃ is after returning to room temperature with sample survey with-15 ± 2 ℃ of low-temperature stabilities checks, the mild agitation test specimen, and no visible particles and grease are as the criterion of acceptability of check.
Embodiment 3
Take by weighing 268.82 kilograms of Fluoxastrobins, 60 kilograms of N-Methyl pyrrolidone, 150 kilograms in turpentine oil, 20 kilograms of polyoxyethylene polyoxypropylene block copolymers, 15 kilograms of C12-14 alcohol APEOs, 30 kilograms of aliphatic alcohol polyoxyvinethene phosphates, mix and obtain oil phase; Take by weighing 30 kilograms of ethylene glycol, 3 kilograms of xanthans, 1 kilogram of methyl polysiloxane, 422.18 kilograms in water, mix and obtain water; Be under 2000 rev/mins the stirring condition, water to be added oil phase at rotating speed.In resonant frequency is that 25kHz, power are under the condition of 500W, and ultrasonic emulsification 8 minutes forms 1000 kilogram of 25% Fluoxastrobin emulsion.
This example Fluoxastrobin emulsion the results are shown in Table 3 carrying out carrying out the low-temperature stability check under heat storage, 0 ± 2 ℃ and-15 ± 2 ℃ of conditions under 54 ± 2 ℃ of conditions.As can be known from Table 3, this example Fluoxastrobin emulsion has good cold and hot stable storage performance, and storage at normal temperature can be stablized more than 3 years.
This example of table 3 Fluoxastrobin emulsion stability result of the test
| Storage temperature | Stored 14 days | Stored 30 days | Stored 180 days |
| ??54±2℃ | Fluoxastrobin resolution ratio 0.6% heat storage stability is qualified | Fluoxastrobin salt resolution ratio 1.2% heat storage stability is qualified | Fluoxastrobin resolution ratio 2.3% heat storage stability is qualified |
| 0 ± 2 ℃ (remarks) | It is qualified to return to room temperature | It is qualified to return to room temperature | It is qualified to return to room temperature |
| -15 ± 2 ℃ (remarks) | It is qualified to return to room temperature | It is qualified to return to room temperature | It is qualified to return to room temperature |
Remarks: 0 ± 2 ℃ is after returning to room temperature with sample survey with-15 ± 2 ℃ of low-temperature stabilities checks, the mild agitation test specimen, and no visible particles and grease are as the criterion of acceptability of check.
Embodiment 4
Take by weighing 56.59 kilograms of Fluoxastrobins, 40 kilograms of australenes, 40 kilograms of N-octylpyrrolidone, 20 kilograms of ethylene glycol APEOs, 20 kilograms of C12-14 polyoxyethylene ether phosphates, mix and obtain oil phase; Take by weighing 40 kilograms of glycerine, 20 kilograms of polyvinyl alcohol, 10 kilograms of salicylic acids, 2 kilograms of modified methyl polysiloxanes, 751.41 kilograms in water, mix and obtain water; Be under 2000 rev/mins the stirring condition, water to be added oil phase at rotating speed.In resonant frequency is that 30kHz, power are under the condition of 800W, and ultrasonic emulsification 5 minutes forms 1000 kilogram of 5% Fluoxastrobin emulsion.
This example Fluoxastrobin emulsion the results are shown in Table 4 carrying out carrying out the low-temperature stability check under heat storage, 0 ± 2 ℃ and-15 ± 2 ℃ of conditions under 54 ± 2 ℃ of conditions.As can be known from Table 4, this example Fluoxastrobin emulsion has good cold and hot stable storage performance, and storage at normal temperature can be stablized more than 3 years.
This example of table 4 Fluoxastrobin emulsion stability result of the test
| Storage temperature | Stored 14 days | Stored 30 days | Stored 180 days |
| ??54±2℃ | Fluoxastrobin resolution ratio 0.7% heat storage stability is qualified | Fluoxastrobin salt resolution ratio 1.4% heat storage stability is qualified | Fluoxastrobin resolution ratio 2.6% heat storage stability is qualified |
| 0 ± 2 ℃ (remarks) | It is qualified to return to room temperature | It is qualified to return to room temperature | It is qualified to return to room temperature |
| -15 ± 2 ℃ (remarks) | It is qualified to return to room temperature | It is qualified to return to room temperature | It is qualified to return to room temperature |
Remarks: 0 ± 2 ℃ is after returning to room temperature with sample survey with-15 ± 2 ℃ of low-temperature stabilities checks, the mild agitation test specimen, and no visible particles and grease are as the criterion of acceptability of check.
Embodiment 5
Take by weighing 161.30 kilograms of Fluoxastrobins, 70 kilograms of australenes, 50 kilograms of N-Methyl pyrrolidone, 20 kilograms in polyoxyethylene stearyl acyl ether, 25 kilograms of dialkyl group sulfonic acid succinates, mix and obtain oil phase; Take by weighing 50 kilograms of n-butanols, 30 kilograms of salicylic acids, 20 kilograms of aluminium-magnesium silicates, 1 kilogram of modified methyl polysiloxanes, 572.70 kilograms in water, mix and obtain water; Be under 2000 rev/mins the stirring condition, water to be added oil phase at rotating speed.In resonant frequency is that 20kHz, power are under the condition of 200W, and ultrasonic emulsification 15 minutes forms 1000 kilogram of 15% Fluoxastrobin emulsion.
This example Fluoxastrobin emulsion the results are shown in Table 5 carrying out carrying out the low-temperature stability check under heat storage, 0 ± 2 ℃ and-15 ± 2 ℃ of conditions under 54 ± 2 ℃ of conditions.As can be known from Table 5, this example Fluoxastrobin emulsion has good cold and hot stable storage performance, and storage at normal temperature can be stablized more than 3 years.
This example of table 5 Fluoxastrobin emulsion stability result of the test
| Storage temperature | Stored 14 days | Stored 30 days | Stored 180 days |
| ??54±2℃ | Fluoxastrobin resolution ratio 0.7% heat storage stability is qualified | Fluoxastrobin salt resolution ratio 1.3% heat storage stability is qualified | Fluoxastrobin resolution ratio 2.6% heat storage stability is qualified |
| 0 ± 2 ℃ (remarks) | It is qualified to return to room temperature | It is qualified to return to room temperature | It is qualified to return to room temperature |
| -15 ± 2 ℃ (remarks) | It is qualified to return to room temperature | It is qualified to return to room temperature | It is qualified to return to room temperature |
Remarks: 0 ± 2 ℃ is after returning to room temperature with sample survey with-15 ± 2 ℃ of low-temperature stabilities checks, the mild agitation test specimen, and no visible particles and grease are as the criterion of acceptability of check.
Embodiment 6
Take by weighing 376.34 kilograms of Fluoxastrobins, N-Methyl pyrrolidone double centner, 150 kilograms in turpentine oil, 20 kilograms of polyoxyethylene polyoxypropylene block copolymers, 15 kilograms of C12-14 alcohol APEOs, 20 kilograms of aliphatic alcohol polyoxyvinethene phosphates, mix and obtain oil phase; Take by weighing 30 kilograms of ethylene glycol, 2 kilograms of xanthans, 1 kilogram of methyl polysiloxane, 285.66 kilograms in water, mix and obtain water; Be under 2000 rev/mins the stirring condition, water to be added oil phase at rotating speed.In resonant frequency is that 25kHz, power are under the condition of 600W, and ultrasonic emulsification 10 minutes forms 1000 kilogram of 35% Fluoxastrobin emulsion.
This example Fluoxastrobin emulsion the results are shown in Table 6 carrying out carrying out the low-temperature stability check under heat storage, 0 ± 2 ℃ and-15 ± 2 ℃ of conditions under 54 ± 2 ℃ of conditions.As can be known from Table 6, this example Fluoxastrobin emulsion has good cold and hot stable storage performance, and storage at normal temperature can be stablized more than 3 years.
This example of table 6 Fluoxastrobin emulsion stability result of the test
| Storage temperature | Stored 14 days | Stored 30 days | Stored 180 days |
| ??54±2℃ | Fluoxastrobin resolution ratio 0.5% heat storage stability is qualified | Fluoxastrobin salt resolution ratio 1.1% heat storage stability is qualified | Fluoxastrobin resolution ratio 2.1% heat storage stability is qualified |
| 0 ± 2 ℃ (remarks) | It is qualified to return to room temperature | It is qualified to return to room temperature | It is qualified to return to room temperature |
| -15 ± 2 ℃ (remarks) | It is qualified to return to room temperature | It is qualified to return to room temperature | It is qualified to return to room temperature |
Remarks: 0 ± 2 ℃ is after returning to room temperature with sample survey with-15 ± 2 ℃ of low-temperature stabilities checks, the mild agitation test specimen, and no visible particles and grease are as the criterion of acceptability of check.
Comparative Examples 1
The Fluoxastrobin suspending agent (commercially available) that 250g/ rises.
Control cucumber downy mildew field trial
Choose the consistent cucumber of cucumber downy mildew morbidity and test, the medicament water directly dilutes spraying, statistics leaf spot lesion area after 7 days, 15 days, 25 days behind the medicine, and the investigation prevention effect, result of the test is referring to table 7.
Table 7 control cucumber downy mildew field test results
| Test medicine | Drug concentration | 7 days control efficiency (%) | 15 days control efficiency (%) | 25 days control efficiency (%) |
| Embodiment 1 | ??80ppm | ??85.6 | ??81.5 | ??72.5 |
| Embodiment 2 | ??80ppm | ??96.4 | ??93.2 | ??86.3 |
| Embodiment 3 | ??80ppm | ??93.7 | ??91.5 | ??80.8 |
| Embodiment 4 | ??80ppm | ??88.1 | ??83.4 | ??75.2 |
| Test medicine | Drug concentration | 7 days control efficiency (%) | 15 days control efficiency (%) | 25 days control efficiency (%) |
| Embodiment 5 | ??80ppm | ??95.6 | ??94.5 | ??88.0 |
| Embodiment 6 | ??80ppm | ??91.4 | ??89.2 | ??78.8 |
| Comparative Examples 1 | ??80ppm | ??72.4 | ??70.4 | ??63.7 |
| CK (contrast) | ??/ | ??/ |
As can be seen from Table 7, the Fluoxastrobin emulsion of the embodiment of the invention is better than the control efficiency of Comparative Examples to the control efficiency of cucumber downy mildew.
Control rice blast field trial
Choose the consistent paddy field of rice blast morbidity and test, the medicament water directly dilutes spraying, statistics leaf spot lesion area after 7 days, 15 days, 25 days behind the medicine, and the investigation prevention effect, result of the test is referring to table 8.
Table 8 control rice blast field test results
| Test medicine | Drug concentration | 7 days control efficiency (%) | 15 days control efficiency (%) | 25 days control efficiency (%) |
| Embodiment 1 | ??80ppm | ??84.6 | ??78.4 | ??72.9 |
| Embodiment 2 | ??80ppm | ??94.3 | ??88.5 | ??87.3 |
| Embodiment 3 | ??80ppm | ??90.7 | ??81.5 | ??80.8 |
| Embodiment 4 | ??80ppm | ??86.1 | ??78.9 | ??74.2 |
| Embodiment 5 | ??80ppm | ??95.5 | ??90.1 | ??88.6 |
| Embodiment 6 | ??80ppm | ??90.1 | ??80.6 | ??79.2 |
| Comparative Examples 1 | ??80ppm | ??78.6 | ??70.5 | ??64.5 |
| CK (contrast) | ??/ | ??/ |
As can be seen from Table 8, the Fluoxastrobin emulsion of the embodiment of the invention is better than the control efficiency of Comparative Examples to the control efficiency of rice blast.
Control tomato late blight field trial
Choose the consistent tomato of tomato late blight morbidity and test, the medicament water directly dilutes spraying, statistics leaf spot lesion area after 7 days, 15 days, 25 days behind the medicine, and the investigation prevention effect, result of the test is referring to table 9.
Table 9 control tomato late blight field test results
| Test medicine | Drug concentration | 7 days control efficiency (%) | 15 days control efficiency (%) | 25 days control efficiency (%) |
| Embodiment 1 | ??80ppm | ??87.4 | ??84.5 | ??78.7 |
| Embodiment 2 | ??80ppm | ??96.5 | ??90.3 | ??84.4 |
| Embodiment 3 | ??80ppm | ??93.5 | ??89.4 | ??82.5 |
| Embodiment 4 | ??80ppm | ??89.3 | ??85.8 | ??82.0 |
| Embodiment 5 | ??80ppm | ??95.1 | ??90.6 | ??85.3 |
| Embodiment 6 | ??80ppm | ??91.8 | ??89.0 | ??81.3 |
| Comparative Examples 1 | ??80ppm | ??83.5 | ??78.6 | ??72.4 |
| CK (contrast) | ??/ | ??/ |
As can be seen from Table 9, the Fluoxastrobin emulsion of the embodiment of the invention is better than the control efficiency of Comparative Examples to the control efficiency of tomato late blight.
The Fluoxastrobin emulsion that the present invention relates to has the following advantages: (1) adopts the Fluoxastrobin emulsion of ultrasonic emulsification technology preparation, and production technology is simple, and production cost is low, is easy to large-scale production, the constant product quality height of production.(2) do not use the not high organic solvent of safety such as any aromatic hydrocarbons and use the emulsifier of biological degradability, compare with conventional aqueous emulsion, the Fluoxastrobin emulsion that the present invention relates to is safer to environment and people, has also further improved the security performance of product in production, transportation, storage, use.(3) control cucumber downy mildew, rice blast, tomato late blight etc. are effective.Add salicylic acid or turpentine oil and can significantly improve control efficiency, therefore can reduce Fluoxastrobin control working concentration, reduce the control cost.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. pesticide emulsion in water, comprise the pesticide emulsion in water acceptable assistant of effective amount of actives Fluoxastrobin, effective dose, the organic solvent that can dissolve Fluoxastrobin and the water of effective dose, it is characterized in that, comprise the builder salicylic acid and/or the turpentine oil of effective dose in the described auxiliary agent.
2. pesticide emulsion in water as claimed in claim 1, it is characterized in that, by weight percentage, wherein, the water that contains 5～35% Fluoxastrobins, 5～25% organic solvents, 2～15% emulsifier, 0.5～5% builder, 1～5% antifreeze, 0.2～5% thickener, 0～0.3% defoamer and surplus.
3. pesticide emulsion in water as claimed in claim 2 is characterized in that, wherein, described solvent is chosen one or more in D-citrene, australene, N-Methyl pyrrolidone and N-octylpyrrolidone wantonly.
4. pesticide emulsion in water as claimed in claim 2 is characterized in that, wherein, described emulsifier is chosen selfpolyoxyethylene polyoxypropylene block copolymers, C wantonly
12-14Alcohol APEO, polyoxyethylene stearyl acyl ether, polyoxypropylene stearoyl ether, sorbitol polyoxyethylene ether, sorbierite polyethenoxy ether, castor oil polyoxyethylene ether, ethylene glycol APEO, anhydrosorbitol acid anhydride oleate, anhydrous sorbitol acid anhydride trioleate, alkane polyoxyethylene 20 sorbitan monooleate, aliphatic alcohol polyoxyvinethene phosphate, C
12-14In polyoxyethylene ether phosphate, polyxyethylated sulfuric ester and the dialkyl group sulfonic acid succinate one or more.
5. pesticide emulsion in water as claimed in claim 2, it is characterized in that, wherein, described antifreeze is optional from ethylene glycol, propane diols, hexylene glycol, diethylene glycol (DEG), 1, and 3-butanediol, molecular weight are one or more in 2000～4000 polyethylene glycol, glycerine, urea, isobutanol, n-butanol, isopropyl alcohol, isooctanol and the sorbierite.
6. pesticide emulsion in water as claimed in claim 2 is characterized in that, wherein, described thickener is chosen one or more in xanthans, polyvinyl alcohol, aluminium-magnesium silicate, polyvinylpyrrolidone, gum Arabic and acrylate wantonly.
7. pesticide emulsion in water as claimed in claim 2 is characterized in that, wherein, described defoamer is methyl polysiloxane and/or modified methyl polysiloxanes.
8. the preparation method of pesticide emulsion in water according to claim 1 comprises the steps:
(1) with Fluoxastrobin, organic solvent, emulsifier adds in the reactor, mixes, and forms oil phase; Thickener and water are mixed, form water;
Wherein, described aqueous phase evenly is mixed with salicylic acid; And/or
Evenly be mixed with turpentine oil in the described oil phase;
(2) water is evenly mixed with oil phase, ultrasonic emulsification forms aqueous emulsion.
9. as the preparation method of pesticide emulsion in water as described in the claim 8, it is characterized in that described aqueous phase also evenly is mixed with antifreeze and defoamer.
10. as the preparation method of pesticide emulsion in water as described in claim 8 or 9, it is characterized in that, under stirring condition, water and oil phase are mixed, in resonant frequency is that 10～50kHz, power are under the condition of 100～1000W, and ultrasonic emulsification 5～15 minutes forms described aqueous emulsion.
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| CN106577788A (en) * | 2016-11-25 | 2017-04-26 | 东莞市联洲知识产权运营管理有限公司 | Synergistic insecticide of plant source and preparation method thereof |
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