CN102870768A - Ultralow-capacity imidacloprid spray and preparation method thereof - Google Patents
Ultralow-capacity imidacloprid spray and preparation method thereof Download PDFInfo
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- CN102870768A CN102870768A CN2012104201689A CN201210420168A CN102870768A CN 102870768 A CN102870768 A CN 102870768A CN 2012104201689 A CN2012104201689 A CN 2012104201689A CN 201210420168 A CN201210420168 A CN 201210420168A CN 102870768 A CN102870768 A CN 102870768A
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Abstract
The invention discloses an ultralow-capacity imidacloprid spray. The ultralow-capacity imidacloprid spray is characterized by comprising the following components by weight percent: 0.1-15% of imidacloprid active compound, 55-90% of solvent and 3-30% of cosolvent. When the ultralow-capacity imidacloprid spray provided by the invention is used for preventing and controlling pests, the spray amount is little, the work efficiency is high, the liquid pesticide amount sprayed in unit area is only one percent of the conventional spray amount, and water is not needed, so that the ultralow-capacity imidaloprid spray is suitable for drought areas or hydropenic areas and has the advantages that the applicable range is wide, the pesticide effect is higher than a conventional dosage form, the lasting time is long, the safety is high, the environment is not affected, the large-area prevention and control can be conducted by using the spraying of a plane and other modes, the prevention and control efficiency is improved, and the prevention and control cost is lowered.
Description
Technical field
The present invention relates to a kind of Imidacloprid ultra low volume spraying agent and preparation method thereof, belong to agricultural chemicals configuration and preparing technical field.
Background technology
Ultra low volume spraying agent (being called for short ULV) is a kind of special finish, and ultra low volume refers to be sprayed onto the liquid on the mark crop, with superfine droplet, extremely low consumption ejection is a kind of special-purpose formulation of using for ultra low volume spraying, the fine mist that is characterized on ground or with aircraft ULV is sprayed into 70～120grn, be evenly distributed on the surface of plant stem-leaf, cure the disease thereby performance is anti-effectively, the effect of insect pest, dosage is few, good drug efficacy, work efficiency is high, expenses for prevention and control is low, water not, and the conventional pesticide formulation generally is watered the dilution spraying, usefulness is lower, according to statistics, the performance of effective content only accounts for the less than 20% of total content, greatly wastes resource.
Wherein, the ultra low volume spraying agent is compared with conventional spray and is had the following advantages:
(1) discharge rate is few, work efficiency is high: ultra low volume spraying is generally 900～4950ml/hm2 in the amount of liquid medicine that unit are sprays, and only is hundreds of/one of conventional spraying.The general drift cumulative bad that adopts is sprayed, and is higher tens times than conventional specific aim spraying work efficiency;
(2) concentration is high: the liquor strength of ultra low volume spraying is generally 1%～50%, than high tens to hundreds of times of the liquor strengths (being 0.1%～0.2%) of routine spraying;
(3) droplet is thin: generally in 70～100 μ m scopes, the fogdrop diameter (being 200～300 μ m) of spraying than routine is thin for the fogdrop diameter of ultra low volume spraying;
(4) oily carrier: the liquid of ultra low volume spraying mainly adopts high boiling oily carrier, and volatility is low, utilizes the deposition of little droplet, and resistance of rainwater washing against, the lasting period is long, drug effect is high, and conventional spraying is mainly adopted and used water as carrier;
(5) safe: the ultra low volume finish is to crop safety, and its active ingredient does not adopt severe toxicity and high-toxic pesticide, also is comparatively safe to the people, therefore require tighter to used powder performance;
(6) preparing process is fairly simple, is easy to industrialization.
The prescription of ultra low volume spraying agent forms, and except former medicine, mainly is solvent, requires this solvent that the ability of the former medicine of dissolving is arranged, and volatility is little, and flash-point is not less than 70 ℃.Sometimes prescription also need add other auxiliary agents, such as solubilizer, poisoning palliative, viscosity reductant, stabilizing agent, electrostatic agent etc.
Be specially:
(1) former medicine requires: its active ingredient does not adopt severe toxicity and high-toxic pesticide, is comparatively safe to the people yet, therefore require tighter to used powder performance.The former medicine that is used for preparation ultra low volume spraying agent generally is efficiently, the kind of low toxicity, and former medicine is to oral acute toxicity LD50 〉=100mg/kg of rat, the LD50＞300mg/kg of preparation.
(2) key of the selection of solvent: ULV preparation is to select a good solvent, the characteristics of solvent are that former medicine is had good dissolubility, weak volatility, lower viscosity, higher flash-point (greater than 75 ℃) are arranged and do not have poisoning or poisoning lighter to crop.Be the physicochemical character that improves the ultra low volume spraying finish, convenient use, raising drug effect, except choosing main solvent, sometimes also need add cosolvent (solubilizer) with the solvability that improves medicament, viscosity reductant with the viscosity that reduces preparation, chemical stabilizer to improve the stability of storage period, reduce the poisoning agent when guaranteeing to use to crop safety and synergist to improve drug effect etc.
(3) ultra low volume spraying is subjected to windage larger, prevention and treatment range is narrow, higher to specification requirement, the viscosity of solvent is low, surface tension is little, adheres to the dispersion that is conducive to medicament with crop and controlling object, and relative density wants large simultaneously, not only be conducive to the dispersion of medicament, and be conducive to the droplet sedimentation.
And we know: Imidacloprid is the nitro-methylene-type systemic insecticide, it is the acting body of nicotinic acid nAChR ligands, disturb the pest movements nervous system that chemical signal is transmitted malfunctioning, without the cross resistance problem, be used for control sucking pest and resistant strain thereof.Imidacloprid is chloro nicotine insecticide of new generation, has wide spectrum, efficient, low toxicity, low-residual, and insect is difficult for producing resistance, to characteristics such as people, animal, plant and natural enemies securities, and have tag, stomach toxicity and the multiple drug effect of interior suction.Behind the insect contact medicament, the nervous centralis normal conduction is obstructed, and makes its paralysis dead, and quick-acting is good, higher preventive effect is namely arranged in 1 day behind the medicine, and residual life reached about 25 days.Be mainly used in preventing and treating sucking pest.
At present, the formulation of Imidacloprid processing mainly is 2.5%, 5% missible oil on the market, 2.5%, 10%, 25% wetting powder, 12.5%, 25% soluble liquid, 35%, 500g/l, 600g/l aqueous suspension agent, the agent of kind clothing, 20%, 70% dense soluble powder etc.
The product of above-mentioned formulation all need be watered use, consume a large amount of water resources, and the liquid evaporation discharge is large, and effect is lower; Contain suitable various surfactants auxiliary agent in the product forms, flow in the soil, some degradation cycles are long, easily cause soil compaction; Above-mentioned formulation is difficult to use the large area controls such as aerial spraying, and is low to prophylactic-therapeutic effects such as mountain forest, sugarcanes.Some places are because the water source difficulty is used pulvis for a long time, and not only anti-heterodyne, and dosage increases, and the result develops immunity to drugs insect, and the environmental pollution increase, therefore the upper novel form of being badly in need of providing imidacloprid pesticide of agricultural.
Summary of the invention
In order to overcome the deficiencies in the prior art: the object of the present invention is to provide that a kind of discharge rate is little, effect is high, safety, long Imidacloprid ultra low volume spraying agent of duration.
Technical scheme of the present invention is:
A kind of Imidacloprid ultra low volume spraying agent is characterized in that, comprise following component, and the mass percent of each component is respectively:
The former medicine of Imidacloprid: 0.1-15%;
Solvent: 55-90%;
Cosolvent: 3-30%,
Described solvent is at least a in polyalkylbenzene, many Fluhyzons, alkanes kerosene, diesel oil, machine oil, ethylene glycol, diethylene glycol, multicondensed ethylene glycol, ethylene glycol monomethyl ether, ethylene glycol ethyl ether, propene carbonate, dimethyl carbonate, repefral, diethyl phthalate, the dibutyl phthalate
Described cosolvent then is isophorone, cyclohexanone, pyrrolidones, dimethyl formamide, at least a in the dimethyl sulfoxide (DMSO).
Further, the boiling range of described polyalkylbenzene is 170～230 ℃.And the boiling range of described many Fluhyzons is 230～290 ℃.
A kind of preparation method of aforesaid Imidacloprid ultra low volume spraying agent, it is characterized in that, the former medicine of Imidacloprid, solvent and cosolvent mass percent are according to the rules joined in the preparing tank, stir and indices after the assay was approved, filter or squeeze into blowing in the settling tank, obtain Imidacloprid ultra low volume spraying agent.
Beneficial effect of the present invention is: Imidacloprid ultra low volume spraying agent of the present invention is when carrying out diseases and pests controlling, discharge rate is few, work efficiency is high, and the amount of liquid medicine that sprays in unit are only is one of percentage of conventional spraying number, and does not need water, be suitable for the area of drought and water shortage, applied widely, and its drug effect is higher than regular dosage form, longer duration, safe, can not affect environment, can use aerial spraying and etc. mode carry out large area control, improved and prevented and treated efficient, reduced expenses for prevention and control.
Embodiment
Below in conjunction with specific embodiment technical solution of the present invention is elaborated, but protection scope of the present invention is not limited to described embodiment.
Each component of selecting is commercially available, and wherein the purity of the former medicine of Imidacloprid is 97.6%, and following examples, each component are according to listed as parts by weight:
Embodiment 1:Get 63.37 parts of 11.63 parts of the former medicines of Imidacloprid, 15 parts of dimethyl formamides, 10 parts of diesel oil and propene carbonates, join in the preparing tank, stir (can heat in case of necessity), and indices after the assay was approved, filter or squeeze into blowing in the settling tank, obtain Imidacloprid ultra low volume spraying agent.
Embodiment 2:Get 78.37 parts of 11.63 parts of the former medicines of Imidacloprid, 5 parts of cyclohexanone, 5 parts of ethylene glycol monomethyl ether and dibutyl phthalates, join in the preparing tank, stir (can heat in case of necessity), and indices after the assay was approved, filter or squeeze into blowing in the settling tank, obtain Imidacloprid ultra low volume spraying agent.
Embodiment 3:Get 36.37 parts of 8.63 parts of the former medicines of Imidacloprid, 25 parts of dimethyl sulfoxide (DMSO)s, 20 parts of ethylene glycol and repefrals, join in the preparing tank, stir (can heat in case of necessity), and indices after the assay was approved, filter or squeeze into blowing in the settling tank, obtain Imidacloprid ultra low volume spraying agent.
Embodiment 4:Get 68.37 parts of 11.63 parts of the former medicines of Imidacloprid, 10 parts of pyrrolidones, 10 parts of ethylene glycol and repefrals, join in the preparing tank, stir (can heat in case of necessity), and indices after the assay was approved, filter or squeeze into blowing in the settling tank, obtain Imidacloprid ultra low volume spraying agent.
Embodiment 5:Get 52.37 parts of 5.63 parts of the former medicines of Imidacloprid, 30 parts of isophorones, 12 parts of polyalkylbenzene and propene carbonates, join in the preparing tank, stir (can heat in case of necessity), and indices after the assay was approved, filter or squeeze into blowing in the settling tank, obtain Imidacloprid ultra low volume spraying agent.
Embodiment 6:Get 89.95 parts of 1.05 parts of the former medicines of Imidacloprid, 9 parts of DMSO and propene carbonates, join in the preparing tank, stir (can heat in case of necessity), and indices after the assay was approved, filter or squeeze into blowing in the settling tank, obtain Imidacloprid ultra low volume spraying agent.
Embodiment 7:Get 89.95 parts of 1.05 parts of the former medicines of Imidacloprid, 9 parts of pyrrolidones and propene carbonates, join in the preparing tank, stir (can heat in case of necessity), and indices after the assay was approved, filter or squeeze into blowing in the settling tank, obtain Imidacloprid ultra low volume spraying agent.
Embodiment 8:Get 89.95 parts of 1.05 parts of the former medicines of Imidacloprid, 9 parts of DMSO and repefrals, join in the preparing tank, stir (can heat in case of necessity), and indices after the assay was approved, filter or squeeze into blowing in the settling tank, obtain Imidacloprid ultra low volume spraying agent.
Embodiment 9:Get 82.44 parts of 2.56 parts of the former medicines of Imidacloprid, 15 parts of DMSO and propene carbonates, join in the preparing tank, stir (can heat in case of necessity), and indices after the assay was approved, filter or squeeze into blowing in the settling tank, obtain Imidacloprid ultra low volume spraying agent.
The ultra low volume spraying agent empirical tests of above embodiment gained all meets or has reached the listed index of following table:
Table 1: increase Imidacloprid ultra low volume spraying agent quality index
The present invention utilizes the Imidacloprid ultra low volume spraying agent of embodiment 5 preparations to carry out field control effectiveness test, and its result is as follows:
Test mainly for the control sugar cane cottony aphid worm test of pesticide effectiveness and to the safety of surrounding environment, what the contrast experiment adopted is 2.5% high-osmosis imidacloprid wettable powder, the pharmacy test flonicamid is established 1 processing of Imidacloprid ultra low volume spraying agent, uses the domestic ultra-low-volume sprayer in ground.2.5% high-osmosis imidacloprid wettable powder is established and is watered 2000 times of 1 processing.Take the spray clear water as contrast, Aphed populations are investigated in 1 day, 3 days, 7,14 days behind the spray medicine respectively.Calculate the insect population decline rate and proofread and correct the insect population decline rate.
Computational methods:
Insect population decline rate=[(behind spray medicine front insect population radix-medicine each day residual worm amount)/front insect population radix of spray medicine] * 100 %; Proofread and correct insect population decline rate=[(treatment region insect population decline rate-check plot insect population decline rate)/(100-check plot insect population decline rate)] * 100 %.
Field control effectiveness test is as shown in the table:
Above-mentioned result of the test shows: it is strong that the present invention knocks down power to the woolly aphid worm, and 15 days average preventive effect still is that effect is remarkable more than 95.0% behind the medicine; And produce without poisoning, less to the natural enemy injury, be the desirable medicament of control sugar cane cottony aphid worm, suggestion spray amount 5L/ hectare.
As mentioned above, although represented and explained the present invention with reference to specific preferred embodiment, it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite that does not break away from the claims definition, can make in the form and details various variations to it.
Claims (4)
1. an Imidacloprid ultra low volume spraying agent is characterized in that, comprise following component, and the mass percent of each component is respectively:
The former medicine of Imidacloprid: 0.1-15%;
Solvent: 55-90%;
Cosolvent: 3-30%,
Described solvent is at least a in polyalkylbenzene, many Fluhyzons, alkanes kerosene, diesel oil, machine oil, ethylene glycol, diethylene glycol, multicondensed ethylene glycol, ethylene glycol monomethyl ether, ethylene glycol ethyl ether, propene carbonate, dimethyl carbonate, repefral, diethyl phthalate, the dibutyl phthalate
Described cosolvent then is isophorone, cyclohexanone, pyrrolidones, dimethyl formamide, at least a in the dimethyl sulfoxide (DMSO).
2. a kind of Imidacloprid ultra low volume spraying agent according to claim 1 is characterized in that, the boiling range of described polyalkylbenzene is 170～230 ℃.
3. a kind of Imidacloprid ultra low volume spraying agent according to claim 1 is characterized in that, the boiling range of described many Fluhyzons is 230～290 ℃.
4. preparation method such as the described Imidacloprid ultra low volume spraying of each claim of claim 1-3 agent, it is characterized in that, the former medicine of Imidacloprid, solvent and cosolvent mass percent are according to the rules joined in the preparing tank, stir and indices after the assay was approved, filter or squeeze into blowing in the settling tank, obtain Imidacloprid ultra low volume spraying agent.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104920439A (en) * | 2015-06-12 | 2015-09-23 | 福建省德盛生物工程有限责任公司 | Low-volume spray with thiamethoxam |
| CN105454227A (en) * | 2015-12-21 | 2016-04-06 | 苏州富美实植物保护剂有限公司 | Oil suspended agent |
| CN107836448A (en) * | 2017-10-13 | 2018-03-27 | 南京扬子鸿利源化学品有限责任公司 | A kind of Ultralow-capacity imidacloprid spray and preparation method thereof |
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| CN102696619A (en) * | 2012-05-23 | 2012-10-03 | 钦州学院 | Ultra-low volume (ULV) liquid comprising fenpyroximate and triazoles bactericide |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104920439A (en) * | 2015-06-12 | 2015-09-23 | 福建省德盛生物工程有限责任公司 | Low-volume spray with thiamethoxam |
| CN105454227A (en) * | 2015-12-21 | 2016-04-06 | 苏州富美实植物保护剂有限公司 | Oil suspended agent |
| CN107836448A (en) * | 2017-10-13 | 2018-03-27 | 南京扬子鸿利源化学品有限责任公司 | A kind of Ultralow-capacity imidacloprid spray and preparation method thereof |
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Application publication date: 20130116 |