CN1871914A - Aqueous emulsion of anti type cypermethrin, and preparation method - Google Patents

Aqueous emulsion of anti type cypermethrin, and preparation method Download PDF

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Publication number
CN1871914A
CN1871914A CN 200510040382 CN200510040382A CN1871914A CN 1871914 A CN1871914 A CN 1871914A CN 200510040382 CN200510040382 CN 200510040382 CN 200510040382 A CN200510040382 A CN 200510040382A CN 1871914 A CN1871914 A CN 1871914A
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China
Prior art keywords
cypermethrin
emulsifier
aqueous emulsion
anti type
theta
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CN 200510040382
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Chinese (zh)
Inventor
杨寿海
齐武
张兰平
周典海
袁祝庆
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Nanjing No1 Pesticide Co Ltd
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Nanjing No1 Pesticide Co Ltd
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Priority to CN 200510040382 priority Critical patent/CN1871914A/en
Publication of CN1871914A publication Critical patent/CN1871914A/en
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Abstract

An aquatic emulsion of anti-cypermethrin used as a broad-spectrum insecticide without environmental pollution is prepared from anti-cypermethrin, emulsifier EW7504, organic solvent, antifreezing stabilizer and water proportionally.

Description

Aqueous emulsion of anti type cypermethrin and preparation technology thereof
Technical field
What the present invention relates to is a kind of broad spectrum pesticide, chemical name is: (S)-and alpha-cyano-3-phenoxy benzyl (1R, 3S)-3-(2, the 2-dichloroethylene) 2.2-dimethyl cyclopropane carboxylic acid ester and (R)-alpha-cyano-3-phenoxy benzyl (1S, 3R)-3-(2, the 2-dichloroethylene)-2,2-dimethyl cyclopropane carboxylic acid ester also claims the aqueous emulsion and the preparation technology thereof of theta-cypermethrin (beta-cypermethrin).
Background technology
Theta-cypermethrin is a kind of widely used pyrethroid insecticides, is high-efficient broad-spectrum insecticide, and tool is tagged and the insecticide of stomach poison function, prevents and treats a lot of insects.Effective especially to coleoptera and Lepidoptera, be mainly used in the control seedling arrange, cereal.The insect of control has meadow pretty young woman at night, rice leaf roller, striped rice borer, rice leafhopper, plant hopper, stinkbug, cutworm, aphid, corn borer, cotton bollworm, pink bollworm, looper, thrips, aleyrodid, flea beetle, tomato moth, dive fly, moth-eaten moth, gypsymoth, tent caterpillar and cured coccid etc.Also can prevent and treat animal body epizoa, sheep lice and ked, directly be sprayed onto animal on one's body or on the building, can knock down rapidly and lasting control around fly.
Theta-cypermethrin decomposes in plant corpus soon, and residual hazard is low, to the person poultry safety, environment is had no adverse effects.The former medicine of state-owned a few manufacturer production at present, its product is a cream preparation.Cream preparation all mainly adopts aromatic organic solvent to prepare as carrier.Because aromatic organic solvent such as dimethylbenzene, toluene, solvent wet goods are to the pollution problem of environment, relevant environmental protection organization controls the use of this kind solvent, uses no or little the direction that aromatic organic solvent has become trituration.This profit dispersion of aqueous emulsion begins research in the pesticidal preparations exploitation as far back as existing people of initial stage in 19th century, but aqueous emulsion belongs to Unstable Systems, because of its stability is not fine, phenomenons such as layering easily take place, so far in the conventional pesticide preparation variety aqueous emulsion to occupy share minimum.
Summary of the invention
The objective of the invention is in order not use or reduce the usage amount of aromatics organic solvent as far as possible; reduce the organic solvent environmental pollution; protection production, user and other beneficial organisms; a kind of aqueous emulsion of stable theta-cypermethrin is provided because with water to replace organic solvent, improve produce, transportation, the safety of storing.
Another object of the present invention provides the preparation method of aqueous emulsion of anti type cypermethrin.
A kind of aqueous emulsion of anti type cypermethrin, it with the theta-cypermethrin is effective ingredient, and is formulated by following component in percentage by weight:
Theta-cypermethrin 1~30%
Hydrophilic lipophilic balance HLB is 5~18 emulsifier 1~35%
Organic solvent 1~20%
Stablize antifreezing agent 1~20%
Water surplus.
The preferred weight percent of each composition of aqueous emulsion of anti type cypermethrin of the present invention:
Theta-cypermethrin 3~20%
Hydrophilic lipophilic balance HLB is 5~18 emulsifier 3~15%
Organic solvent 5~15%
Stablize antifreezing agent 3~10%
Water surplus.
The emulsifier that the present invention adopts is Sulfonates, phosphoric acid ester or polyethers or their any composite emulsifier.
Wherein, described Sulfonates emulsifier is alkyl benzene calcium sulfonate (as newborn No. 500 of farming) or sodium alkyl benzene sulfonate; Described phosphoric acid esters wedding agents is alkylphenol polyoxyethylene phosphate (as OP-10 phosphate, OP-15 phosphate) or aliphatic alcohol polyoxyvinethene phosphate (as MAP); Described polyethers emulsifier is alkylphenol polyoxyethylene (as farming breast No. 100, OP-10), phenethyl phenol polyethenoxy ether (as agricultural emulsifier NO), poloxalkol (as No. 33, farming breast, No. 34, farming breast), castor oil polyoxyethylene ether (as By125, By140), aliphatic acid polyethenoxy ether (as AO-10), fatty alcohol-polyoxyethylene ether (as No. 200, farming breast, peregal, OS-15) or sorbitan monooleate APEO (as Tween-80, Tween-65).Above-described various hydrophilic lipophilic balance HLB abbreviates the EW7505 emulsifier as among emulsifier the present invention of 5~18.
Composition of the present invention comprises that also percentage by weight is 0~2% thickener, and thickener can adopt one or more any combination in polyacrylate, Magnesiumaluminumsilicate, carboxymethyl cellulose, xanthans or the Sodium Polyacrylate.
Organic solvent is one or more any combination in dimethylbenzene, toluene, ethanol, cyclohexanone or the solvent naphtha; Described stable antifreezing agent is one or more any combination in ethylene glycol, propane diols, urea, glycerine, the isopropyl alcohol.
Water of the present invention can be running water or deionized water.
The preparation technology of aqueous emulsion of anti type cypermethrin of the present invention, its preparation process is as follows:
Get above-mentioned raw materials by weight percent, at first theta-cypermethrin and organic solvent are mixed under mechanical agitation, form oil phase; Water and stable antifreezing agent, emulsifier are dropped in the emulsification Scattered Kettle, and begin to stir under 200~15000 rev/mins rotating speed, its optimum speed is 1000~8000 rev/mins; Then oil phase is dropped in the emulsification Scattered Kettle, stirred 20~100 minutes, the best stirring 30~60 minutes makes it to become even emulsion.
The preparation technology of aqueous emulsion of anti type cypermethrin of the present invention, its preparation process can also adopt:
Get above-mentioned raw materials by weight percent, at first theta-cypermethrin and organic solvent, emulsifier are dropped in the emulsification Scattered Kettle and mix, begin to stir under 200~12000 rev/mins rotating speed, its optimum speed is 1000~8000 rev/mins, forms oil phase; With putting at a slow speed in the emulsification Scattered Kettle after water and the mixing of stable antifreezing agent, to stir 10~100 minutes, the best stirring 20~60 minutes makes it to become even emulsion.
Advantage of the present invention and good effect are:
What 1, pesticide emulsion in water was with practical value is oil-in-water type, and promptly oil is disperse phase, and water is continuous phase, and pesticide active ingredient is at oil phase.Aqueous emulsion is compared with missible oil, advantage is not contain or only contain a small amount of poisonous inflammable aromatic hydrocarbon solvent, thereby can avoid producing with transporting procedures in burning and blast, there is not unpleasant poisonous smell, little to eye irritation, reduced pollution, improved safety greatly production, storing and user to environment; Water with cheapness is matrix, and emulsifier consumption and missible oil are approximate, though increased auxiliary agents such as some co-emulsifiers, antifreeze, because skyrocketing of petroleum product price still can be competed with same concentrations missible oil in business accounting.Aqueous emulsion in use drifts about and alleviates, and does not have wetting powder to spray back vestiges and missible oil to make phenomenons such as the fruit powder comes off, and its drug effect is with suitable with the corresponding missible oil of dosage.
2, use water to replace organic solvent in the aqueous emulsion, the toxicity of warm blooded animal is reduced greatly, than missible oil safety, its active matter content modification scope is big to the toxicity of plant.Aqueous emulsion is compared with microemulsion, because the amount of auxiliary that it consumed is less, so production cost is well below microemulsion.From can preparing the pesticide concentration scope, but the aqueous emulsion compound concentration up to more than 60%, and microemulsion can only be below 20%; And aqueous emulsion under certain condition can be mixed mutually with other medicament such as suspending agent or liquid fertilizer, as can be compound with aqueous suspension (SC), makes suspending agent (SE).
Embodiment
The present invention describes for example with following enforcement, but not as limitation of the present invention.
Embodiment 1:4.5% aqueous emulsion of anti type cypermethrin
Theta-cypermethrin 4.5%
Dimethylbenzene 10%
OP-10 phosphate 8%
Glycerine 5%
Polyacrylate 0.1%
Deionized water to 100%
When process water emulsion, in the emulsification Scattered Kettle, carry out, at first load weighted theta-cypermethrin and organic solvent are mixed under mechanical agitation, form oil phase; Water and stable antifreezing agent, No. 500, farming breast, polyacrylate are dropped in the emulsification Scattered Kettle, and under 5000 rev/mins rotating speed, begin to stir; Then oil phase is dropped in the emulsification Scattered Kettle, stirred 35~40 minutes, make it to become even emulsion.
Embodiment 2:10% aqueous emulsion of anti type cypermethrin
Theta-cypermethrin 10%
Dimethylbenzene 8%
MAP 6%
Propane diols 5%
Running water to 100%
At first load weighted theta-cypermethrin and dimethylbenzene, farming breast are dropped in the emulsification Scattered Kettle for No. 34 and mix, under 8000 rev/mins rotating speed, begin to stir, form oil phase; To put at a slow speed after deionized water and the mixed with propylene glycol in the emulsification Scattered Kettle, stirred about 30 minutes, make it to become even emulsion.
Embodiment 3:20% aqueous emulsion of anti type cypermethrin
Theta-cypermethrin 20%
Dimethylbenzene 20%
By140 10%
Isopropyl alcohol 5%
Running water to 100%
At first load weighted theta-cypermethrin and dimethylbenzene, By140 are dropped in the emulsification Scattered Kettle and mix, under 2000 rev/mins rotating speed, begin to stir, form oil phase; To put at a slow speed after deionized water and the mixed with propylene glycol in the emulsification Scattered Kettle, stirred about 35 minutes, make it to become even emulsion.
Aqueous emulsion of anti type cypermethrin the key technical indexes of the present invention:
Table 1
Medicament Active ingredient Outward appearance Dilution stability (200 times) Heat storage (54 ℃) stability Cold storage (0 ℃) stability
Embodiment 1 embodiment 2 embodiment 3 4.5% 10% 20% Milky flows, stable liquid Qualified Qualified Qualified
Aqueous emulsion of anti type cypermethrin of the present invention is better to the cabbage pieris control efficiency in the field, and result of the test is as shown in table 2:
Table 2
Test is handled Consumption ml/ mu Radix (head) before the medicine Behind the medicine 2 days Behind the medicine 5 days Behind the medicine 10 days
Worm (head) lives Lethality % Proofread and correct preventive effect % Worm (head) lives Lethality % Proofread and correct preventive effect % Worm (head) lives Lethality % Proofread and correct preventive effect %
Embodiment 1 25 211 19 90.10 96.30a 11 94.79 98.60a 21 90.04 94.90a
Embodiment 2 12.5 324 20 93.83 96.05a 13 95.99 98.21a 39 87.96 95.01a
Embodiment 3 6.25 230 8 96.52 97.77a 4 98.26 99.22a 23 90.00 95.86a
10% theta-cypermethrin missible oil 12.5 317 16 94.95 96.77a 38 94.32 97.47a 40 87.38 94.77a
Blank 224 350 -56.2 5 / 502 -124. 1 / 541 -141. 5 /
The present invention has good preventive effect to cabbage pieris, and has good quick-acting, and the lasting period is more than 10 days, and control efficiency all is better than the missible oil with effective dose.Crop there is not poisoning, not obvious to the natural enemy influence.
The aqueous emulsion of anti type cypermethrin of embodiment 44.5%
Theta-cypermethrin 4.5%
EW7505 emulsifier 12%
Organic solvent 15%
Stablize antifreezing agent 1%
Water to 100%.
Wherein, the EW7505 emulsifier can be selected alkyl benzene calcium sulfonate (as newborn No. 500 of farming) for use, sodium alkyl benzene sulfonate, the alkylphenol polyoxyethylene phosphate is (as the OP-10 phosphate, the OP-15 phosphate), aliphatic alcohol polyoxyvinethene phosphate (as MAP), alkylphenol polyoxyethylene is (as newborn No. 100 of farming, OP-10), phenethyl phenol polyethenoxy ether (as agricultural emulsifier NO), poloxalkol is (as newborn No. 33 of farming, No. 34, farming breast), castor oil polyoxyethylene ether is (as By125, By140), aliphatic acid polyethenoxy ether (AO-10), fatty alcohol-polyoxyethylene ether is (as newborn No. 200 of farming, peregal, OS-15), the sorbitan monooleate APEO is (as Tween-80, Tween-65) any one in can adopt farming breast No. 100 or OS-15 etc. as the EW7505 emulsifier.
Wherein, organic solvent is got any one in dimethylbenzene, toluene, ethanol, cyclohexanone, the solvent naphtha, can adopt toluene or ethanol etc. as organic solvent.
Wherein, stable antifreezing agent is got any one in ethylene glycol, propane diols, urea, glycerine, the isopropyl alcohol, as stablizes antifreezing agent and can choose ethylene glycol or glycerine etc.
Preparation process is as follows:
Get above-mentioned raw materials by weight percent, at first theta-cypermethrin and organic solvent are mixed under mechanical agitation, form oil phase; Water and stable antifreezing agent, emulsifier are dropped in the emulsification Scattered Kettle, and under 5000 rev/mins rotating speed, begin to stir, then oil phase is dropped in the emulsification Scattered Kettle, stirred 60~65 minutes, make it to become even emulsion.
Embodiment 5 30% aqueous emulsion of anti type cypermethrin
Theta-cypermethrin 30%
EW7505 emulsifier 6%
Organic solvent 15%
Stablize antifreezing agent 5%
Water to 100%.
Wherein, the EW7505 emulsifier can be selected alkyl benzene calcium sulfonate (as newborn No. 500 of farming) for use, sodium alkyl benzene sulfonate, the alkylphenol polyoxyethylene phosphate is (as the OP-10 phosphate, the OP-15 phosphate), aliphatic alcohol polyoxyvinethene phosphate (as MAP), alkylphenol polyoxyethylene is (as newborn No. 100 of farming, OP-10), phenethyl phenol polyethenoxy ether (as agricultural emulsifier NO), poloxalkol is (as newborn No. 33 of farming, No. 34, farming breast), castor oil polyoxyethylene ether is (as By125, By140), aliphatic acid polyethenoxy ether (AO-10), fatty alcohol-polyoxyethylene ether is (as newborn No. 200 of farming, peregal, OS-15), the sorbitan monooleate APEO is (as Tween-80, Tween-65) several any mixing in, select for use and can mix by arbitrary proportion when several, can select the farming breast for use No. 33 as the EW7505 emulsifier: AO-10: Tween-65 is by the composite mixture of 5: 2: 3 ratio composition.
Wherein, organic solvent is got several any mixing in dimethylbenzene, toluene, ethanol, cyclohexanone, the solvent naphtha, can select toluene for use as organic solvent: ethanol: the mixture that dimethylbenzene is formed in 1: 10: 5 ratio.
Wherein, stable antifreezing agent is got several any mixing in ethylene glycol, propane diols, urea, glycerine, the isopropyl alcohol, as stablizes antifreezing agent and can select isopropyl alcohol for use: ethylene glycol: the mixture that glycerine is formed in 5: 7: 3 ratio.
Its preparation process is as follows:
Get above-mentioned raw materials by weight percent, at first theta-cypermethrin and solvent, emulsifier EW7505 are dropped in the emulsification Scattered Kettle and mix, under 3000 rev/mins rotating speed, begin to stir, form oil phase; With putting at a slow speed in the emulsification Scattered Kettle after water and the mixing of stable antifreezing agent, stirred about 55 minutes, make it to become even emulsion.
Embodiment 6 20% aqueous emulsion of anti type cypermethrin
Theta-cypermethrin 20%
Farming breast 500 8%
Toluene 10%
Urea 3%
Deionized water to 100%.
Its preparation process is with embodiment 5.
Embodiment 7 1% aqueous emulsion of anti type cypermethrin
Theta-cypermethrin 1%
Sodium alkyl benzene sulfonate 1%
Dealing with alcohol 1%
Glycerine 5%
Water to 100%.
Its preparation process is with embodiment 5.
Embodiment 8 10% aqueous emulsion of anti type cypermethrin
Theta-cypermethrin 10%
OP-10 phosphate 3%
Solvent naphtha 15%
Ethylene glycol 3%
Deionized water to 100%
Its preparation process is with embodiment 5.
Embodiment 9 3% aqueous emulsion of anti type cypermethrin
Theta-cypermethrin 3%
MAP 10%
Cyclohexanone 5%
Propane diols 10%
Water to 100%.
Its preparation process is with embodiment 5.
Embodiment 10 8% aqueous emulsion of anti type cypermethrin
Theta-cypermethrin 8%
Farming breast No. 100 15%
Dimethylamino benzophenone 15%
Isopropyl alcohol 5%
Water to 100%.
Its preparation process is with embodiment 4.
Embodiment 11 30% aqueous emulsion of anti type cypermethrin
Theta-cypermethrin 30%
EW7505 emulsifier 25%
Organic solvent 20%
Stablize antifreezing agent 15%
Thickener 1%
Water to 100%.
Wherein, EW7505 emulsifier, organic solvent reach and stablize the selection of antifreezing agent with embodiment 5.
Wherein thickener is any mixing several in polyacrylate, Magnesiumaluminumsilicate, carboxymethyl cellulose, xanthans, the Sodium Polyacrylate, selects polyacrylate for use as thickener: Magnesiumaluminumsilicate: the mixture that carboxymethyl cellulose is formed in 1: 1: 1 ratio.
Preparation process is as follows:
Get above-mentioned raw materials by weight percent, at first theta-cypermethrin and solvent are mixed under mechanical agitation, form oil phase; Water and stable antifreezing agent, emulsifier, thickener are dropped in the emulsification Scattered Kettle, and under 4000 rev/mins rotating speed, begin to stir; Then oil phase is dropped in the emulsification Scattered Kettle, stirred 25-30 minute, make it to become even emulsion.
Embodiment 12 25% aqueous emulsion of anti type cypermethrin
Theta-cypermethrin 25%
EW7505 emulsifier 30%
Organic solvent 20%
Stablize antifreezing agent 18%
Thickener 0.5%
Deionized water to 100%
Wherein, EW7505 emulsifier, organic solvent reach and stablize the selection of antifreezing agent with embodiment 4.
Wherein thickener is any one in polyacrylate, Magnesiumaluminumsilicate, carboxymethyl cellulose, xanthans, the Sodium Polyacrylate, can select Magnesiumaluminumsilicate etc. for use as thickener.
Preparation process is as follows:
Get above-mentioned raw materials by weight percent, at first theta-cypermethrin and solvent, emulsifier EW7505 are dropped in the emulsification Scattered Kettle and mix, under 10000 rev/mins rotating speed, begin to stir, form oil phase; Water and stable antifreezing agent, thickener are put at a slow speed in the emulsification Scattered Kettle after mixing, stirred 90 minutes, make it to become even emulsion.
Embodiment 13 15% aqueous emulsion of anti type cypermethrin
Theta-cypermethrin 15%
AO-10 35%
Solvent naphtha 18%
Glycerine 10%
Xanthans 0.8%
Deionized water to 100%
Its preparation process is with embodiment 12.

Claims (10)

1, a kind of aqueous emulsion of anti type cypermethrin, it is effective ingredient with the theta-cypermethrin, and is formulated by following component in percentage by weight:
Theta-cypermethrin 1~30%
Hydrophilic lipophilic balance HLB is 5~18 emulsifier 1~35%
Organic solvent 1~20%
Stablize antifreezing agent 1~20%
Water surplus.
2, aqueous emulsion of anti type cypermethrin according to claim 1, wherein, the percentage by weight of each composition is:
Theta-cypermethrin 3~20%
Hydrophilic lipophilic balance HLB is 5~18 emulsifier 3~15%
Organic solvent 5~15%
Stablize antifreezing agent 3~10%
Water surplus.
3, according to claim 1,2 described aqueous emulsion of anti type cypermethrin, wherein, described emulsifier is Sulfonates, phosphoric acid ester or polyethers or their any composite emulsifier.
4, according to claim 1,2 described aqueous emulsion of anti type cypermethrin, composition comprises that also percentage by weight is 0~2% thickener.
5, aqueous emulsion of anti type cypermethrin according to claim 3, wherein, described Sulfonates emulsifier is alkyl benzene calcium sulfonate or sodium alkyl benzene sulfonate; Described phosphoric acid esters wedding agents is alkylphenol polyoxyethylene phosphate or aliphatic alcohol polyoxyvinethene phosphate; Described polyethers emulsifier is alkylphenol polyoxyethylene, phenethyl phenol polyethenoxy ether, poloxalkol, castor oil polyoxyethylene ether, aliphatic acid polyethenoxy ether, fatty alcohol-polyoxyethylene ether or sorbitan monooleate APEO.
6, aqueous emulsion of anti type cypermethrin according to claim 5, wherein, described Sulfonates emulsifier is No. 500, farming breast; Described phosphoric acid esters wedding agents is OP-10 phosphate, OP-15 phosphate or MAP; Described polyethers emulsifier is No. 100, farming breast, OP-10, agricultural emulsifier NO, No. 33, farming breast, No. 34, farming breast, By125, By140, AO-10, No. 200, farming breast, peregal, OS-15, Tween-80 or Tween-65.
7, aqueous emulsion of anti type cypermethrin according to claim 1, wherein, described organic solvent is one or more any combination in dimethylbenzene, toluene, ethanol, cyclohexanone or the solvent naphtha; Described stable antifreezing agent is one or more any combination in ethylene glycol, propane diols, urea, glycerine or the isopropyl alcohol.
8, aqueous emulsion of anti type cypermethrin according to claim 4, wherein, described thickener is one or more any combination in polyacrylate, Magnesiumaluminumsilicate, carboxymethyl cellulose, xanthans, the Sodium Polyacrylate.
9, the preparation technology of claim 1,2 described aqueous emulsion of anti type cypermethrin, its preparation process is as follows:
(a), get above-mentioned raw materials by weight percent, at first theta-cypermethrin and organic solvent are mixed under mechanical agitation, form oil phase; Water and stable antifreezing agent, emulsifier are dropped in the emulsification Scattered Kettle, and under 200~15000 rev/mins rotating speed, begin to stir; Then oil phase is dropped in the emulsification Scattered Kettle, stirred 20~100 minutes, make it to become even emulsion; Or be
(b), get above-mentioned raw materials by weight percent, at first theta-cypermethrin and organic solvent, emulsifier 5 are dropped in the emulsification Scattered Kettles and mix, under 200~12000 rev/mins rotating speed, begin to stir, form oil phase; With putting at a slow speed in the emulsification Scattered Kettle after water and the mixing of stable antifreezing agent, stirred 10~100 minutes, make it to become even emulsion.
10, the preparation technology of aqueous emulsion of anti type cypermethrin according to claim 9, wherein
(a) under 1000~8000 rev/mins rotating speed, begin in to stir; Described mixing time is 30~60 minutes;
(b) under 1000~8000 rev/mins rotating speed, begin in to stir; Described mixing time is 20~60 minutes.
CN 200510040382 2005-06-03 2005-06-03 Aqueous emulsion of anti type cypermethrin, and preparation method Pending CN1871914A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103583550A (en) * 2013-11-21 2014-02-19 济南凯因生物科技有限公司 Emulsion in water (EW) of theta-cypermethrin and nitenpyram and application of same
CN106332876A (en) * 2016-08-20 2017-01-18 广东中迅农科股份有限公司 Pyrethroid-pesticide-containing emulsion in water and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103583550A (en) * 2013-11-21 2014-02-19 济南凯因生物科技有限公司 Emulsion in water (EW) of theta-cypermethrin and nitenpyram and application of same
CN103583550B (en) * 2013-11-21 2015-07-22 山东中新科农生物科技有限公司 Emulsion in water (EW) of theta-cypermethrin and nitenpyram and application of same
CN106332876A (en) * 2016-08-20 2017-01-18 广东中迅农科股份有限公司 Pyrethroid-pesticide-containing emulsion in water and preparation method thereof

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