CN115644190A - Two-component insecticidal composition containing imidaclothiz and application and preparation method thereof - Google Patents
Two-component insecticidal composition containing imidaclothiz and application and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a two-component insecticidal composition containing imidaclothiz, which is prepared from at least imidaclothiz and emamectin benzoate, wherein the weight ratio of the imidaclothiz to the emamectin benzoate is (5-80): 1. the invention adopts fatty alcohol-polyoxyethylene ether with EO value of 5-9 as wetting agent, which can form stable emulsifying system with original drug, and can be dispersed evenly after mixing with solvent water. And the calcium lignosulfonate is used as a dispersing agent and has synergistic effect with filler attapulgite to increase the viscosity of the formed wettable powder aqueous solution, so that the wettable powder aqueous solution has high adhesive force on the surface of plants and the pesticide effect time of the pesticide is prolonged.
Description
Technical Field
The invention relates to a two-component insecticidal composition containing imidaclothiz, an application and a preparation method thereof, relates to A01N, and relates to the field of insecticides.
Background
With the development of science and technology, a large amount of pesticide and chemical fertilizer is applied to agricultural production to improve the yield of crops, but part of pests generate resistance to pesticides, the efficiency of the pesticides in the agricultural production is lower and lower, the using amount of the pesticides is increased to improve the yield of the crops, the sustainable development of agriculture is not facilitated, pesticide residues are easily generated in the crops, and the human health is not easy to occur. The imidaclothiz and the emamectin benzoate are agents with different action mechanisms, and the synergistic effect of the imidaclothiz and the emamectin benzoate can improve the pesticide efficiency, reduce the pesticide use amount, delay the development of the drug resistance of pests to a single effective component and prolong the service life of the agents. At present, the medicament is mostly liquid medicament, and the dispersibility of the emamectin benzoate missible oil in water is not good, so the emamectin benzoate missible oil is mostly matched with an oily solvent for use, but the residual quantity of the oily solvent on plants is higher, the environmental protection pressure is higher, and the use is inconvenient. And the risk coefficient of the production process of the oily liquid medicament is higher, and the transportation and storage cost is higher.
The Chinese invention patent CN201110269454.5 discloses a imidaclothiz-containing ultra-low volume liquid, the active ingredient is compounded by imidaclothiz and an active ingredient II, the rest ingredients are an auxiliary agent and a solvent, the obtained liquid is convenient to process, long in lasting period, high in work efficiency, and the target is not easy to generate drug resistance, but the prepared liquid is inconvenient to transport and store. Chinese invention patent CN201110269594.2 discloses an ultra-low volume liquid containing dinotefuran, which can be used for controlling crop pests such as rice planthopper and the like by adopting the synergistic effect of dinotefuran and imidaclothiz, and has the advantages of convenient processing, water saving, good drug effect, long lasting effect and the like, but the adopted solvent is an oil solvent, has higher risk coefficient in the processing process, and is not beneficial to sustainable production.
Disclosure of Invention
In order to improve the pesticide effect of the insecticidal composition, delay the development of drug resistance of pests to drugs and prolong the service life of the drugs, the first aspect of the invention provides a imidaclothiz-containing two-component insecticidal composition, the preparation raw materials at least comprise imidaclothiz and emamectin benzoate, and the weight ratio of the imidaclothiz to the emamectin benzoate is (5-80): 1.
in a preferred embodiment, the weight ratio of imidaclothiz to emamectin benzoate is (30-50): 1.
as a preferred embodiment, the preparation raw materials of the insecticidal composition further comprise an auxiliary agent, wherein the auxiliary agent is selected from one or a combination of several of an emulsifier, a dispersant, a thickener, a stabilizer, an anti-freezing agent, a preservative, an antifoaming agent, a filler, a solvent, a wetting agent, a cosolvent, a disintegrating agent, a binder, an oil-soluble capsule wall material and a water-soluble capsule wall material.
As a preferred embodiment, the mass fraction of imidaclothiz and emamectin benzoate in the insecticidal composition is 10-80%.
The second aspect of the invention provides an application of the imidaclothiz-containing two-component insecticidal composition, which is applied to one of water dispersible granules, wettable powder, water suspending agents, dispersible oil suspending agents, microcapsule suspension-suspending agents, missible oil, microemulsions and emulsion in water.
As a preferable embodiment, the wettable powder is applied to wettable powder, and the preparation raw materials of the wettable powder comprise imidaclothiz, emamectin benzoate, a wetting agent, a dispersing agent and a filling material.
In a preferred embodiment, the wetting agent is fatty alcohol-polyoxyethylene ether, and the EO value (mole number of added ethylene oxide) of the fatty alcohol-polyoxyethylene ether is 5 to 9.
The applicant finds that fatty alcohol-polyoxyethylene ether is used as a wetting agent, calcium lignosulfonate is used as a dispersing agent and has synergistic effect with filler attapulgite, the wetting solubility of wettable powder can be improved, the wettable powder can be rapidly dissolved and dispersed in a water solvent during use, the attachment effect with plants after spraying is good, and the long-acting effect is achieved. The reason is probably that the fatty alcohol-polyoxyethylene ether with the EO value of 5-9 has good emulsifying effect on the emamectin benzoate missible oil, forms a stable emulsifying system, and can be uniformly dispersed after being mixed with solvent water. The applicant further finds that the presence of the fatty alcohol-polyoxyethylene ether can reduce the surface tension of the wettable powder aqueous solution, so that the wettable powder aqueous solution is easy to wet and spread on the surface of a leaf, and the fatty alcohol-polyoxyethylene ether with the EO value of 5-9, the calcium lignosulfonate and the attapulgite can increase the viscosity of the formed wettable powder aqueous solution by virtue of synergistic effect, so that the wettable powder aqueous solution has high adhesive force on the surface of a plant, and the pesticide effect time of the pesticide is prolonged.
In a preferred embodiment, the dispersant is selected from one or more of sodium lignosulfonate, sodium methylene bis methyl naphthalene sulfonate, calcium lignosulfonate and anionic carboxylate.
In a preferred embodiment, the filler is selected from one or a combination of kaolin, attapulgite, bentonite, white carbon black and diatomite.
As a preferred embodiment, the imidaclothiz-containing two-component insecticidal composition is used for controlling hemiptera and homoptera pests on crops such as rice, vegetables, fruit trees, wheat and the like.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the imidaclothiz-containing two-component insecticidal composition, fatty alcohol-polyoxyethylene ether with the EO value of 5-9 is used as a wetting agent, so that a stable emulsifying system can be formed with a raw pesticide, and the imidaclothiz-containing two-component insecticidal composition can be uniformly dispersed after being mixed with solvent water.
(2) The imidaclothiz-containing two-component insecticidal composition provided by the invention adopts calcium lignosulfonate as a dispersing agent and can increase the viscosity of a formed wettable powder aqueous solution under the synergistic effect of filler attapulgite, so that the insecticidal composition has high adhesive force on the surface of a plant and the pesticide effect time of a pesticide is prolonged.
(3) The imidaclothiz-containing two-component insecticidal composition is compounded by two effective components, has unique action mechanism and no cross resistance, and reduces the using amount of pesticides, thereby reducing the cost, reducing the pollution to the environment, being beneficial to pest resistance control, and having great economic benefit and social benefit when being popularized and applied.
Detailed Description
Example 1
The two-component insecticidal composition water dispersible granule containing imidaclothiz comprises, by weight, 18% of imidaclothiz, 2% of emamectin benzoate, 4% of an emulsifier, 6% of a dispersant, 5% of a disintegrant, 0.1% of a defoamer, and the balance of a filler to 100%.
The emulsifier is sodium dodecyl sulfate; the dispersant is a naphthalene sulfonate formaldehyde condensate; the disintegrating agent is ammonium sulfate; the defoaming agent is a silicon defoaming agent which is purchased from Mitigo (Shanghai) trade company Limited and has the model of SAG 1572; the filler is kaolin.
A preparation method of imidaclothiz-containing two-component insecticidal composition water dispersible granules comprises the following steps:
the materials are added into a conical mixer together and uniformly mixed, then crushed by an airflow crusher, the materials after airflow crushing are mixed by the conical mixer, the mixed material with the fineness of 98 percent passes through a standard sieve with 600 meshes and is added into a kneading machine to be kneaded into a plastic material, finally the plastic material is put into an extrusion granulator to be extruded and granulated, and the granulated material is dried and sieved to prepare the imidaclothiz-containing two-component insecticidal composition water dispersible granule.
Example 2
The two-component insecticidal composition water dispersible granule containing imidaclothiz comprises 49% of imidaclothiz, 1% of emamectin benzoate, 4% of emulsifier, 6% of dispersant, 5% of disintegrant, 0.1% of defoamer and the filler which is complemented to 100% in percentage by weight.
The emulsifier is sodium dodecyl sulfate; the dispersant is a naphthalene sulfonate formaldehyde condensate; the disintegrating agent is ammonium sulfate; the defoaming agent is a silicon defoaming agent which is purchased from Michigan (Shanghai) trade company Limited and has the model of SAG 1572; the filler is kaolin.
A preparation method of a imidaclothiz-containing two-component insecticidal composition water dispersible granule comprises the following steps:
the materials are added into a conical mixer together and uniformly mixed, then crushed by an airflow crusher, the materials after airflow crushing are mixed by the conical mixer, the mixed material with the fineness of 98 percent passes through a standard sieve with 600 meshes and is added into a kneading machine to be kneaded into a plastic material, finally the plastic material is put into an extrusion granulator to be extruded and granulated, and the granulated material is dried and sieved to prepare the imidaclothiz-containing two-component insecticidal composition water dispersible granule.
Example 3
The specific steps of the double-component insecticidal composition water dispersible granule containing imidaclothiz are the same as those in example 1, and the difference is that the double-component insecticidal composition water dispersible granule contains 78% of imidaclothiz and 2% of emamectin benzoate by weight.
Example 4
The specific steps of the double-component insecticidal composition water dispersible granule containing imidaclothiz are the same as those in example 1, and the difference is that the double-component insecticidal composition water dispersible granule contains 68.5% of imidaclothiz and 1.5% of emamectin benzoate by weight percentage.
Example 5
A two-component insecticidal composition wettable powder containing imidaclothiz is prepared from the following raw materials, by weight, 29.5% of imidaclothiz, 0.5% of emamectin benzoate, 6% of a wetting agent, 4% of a dispersing agent and the balance of a filler to 100%.
The wetting agent is fatty alcohol-polyoxyethylene ether, the EO value is 7, and the wetting agent is purchased from Shandong Tiandao bioengineering Co.
The dispersing agent is calcium lignosulphonate, and the filler is attapulgite.
A preparation method of a two-component insecticidal composition wettable powder containing imidaclothiz comprises the following steps:
the components are uniformly mixed, put into a mechanical crusher for coarse crushing, then subjected to airflow crushing, and uniformly mixed to obtain the imidaclothiz-containing two-component insecticidal composition wettable powder.
Example 6
The specific steps of the two-component insecticidal composition wettable powder containing imidaclothiz are the same as those in example 5, and the two-component insecticidal composition wettable powder is characterized by comprising 14.5% of imidaclothiz and 0.5% of emamectin benzoate in percentage by weight.
Example 7
The two-component insecticidal composition suspoemulsion containing imidaclothiz comprises, by weight, 9% of imidaclothiz, 1% of emamectin benzoate, 10% of cosolvent, 2% of dispersant, 3% of wetting agent, 3% of antifreeze, 0.12% of thickener, 0.2% of preservative, 0.2% of defoamer and the balance of deionized water to 100%.
The cosolvent is cyclohexanone, the wetting agent is a combination of polyoxyethylene polyoxypropylene tristyryl phenyl ether and is purchased from Solvay, the model is Soprophor FD, and the dispersant is polyoxyethylene polyoxypropylene tristyryl phenyl ether and is purchased from Solvay, the model is Soprophor TSP724.
The thickening agent is xanthan gum, the antifreezing agent is ethylene glycol, and the preservative is sodium benzoate.
A method for preparing a imidaclothiz-containing two-component insecticidal composition suspoemulsion comprises the following steps:
weighing the components according to a formula, roughly shearing imidaclothiz, a dispersing agent, a wetting agent with the mass fraction of 50% and water with the mass fraction of 50%, and then putting the materials into a sand mill for direct sand milling to obtain a suspending agent; putting the emamectin benzoate, the cosolvent, the residual wetting agent and the residual water into a high-shear emulsifying kettle for high-speed shearing to obtain the aqueous emulsion; and mixing the suspending agent with the aqueous emulsion, adding the thickening agent, the preservative, the antifreezing agent and the defoaming agent, and stirring and mixing uniformly to obtain the imidaclothiz-containing two-component insecticidal composition suspoemulsion.
Example 8
The two-component insecticidal composition suspending agent containing imidaclothiz is prepared from the following raw materials, by weight, 17.5% of imidaclothiz, 2.5% of emamectin benzoate, 2% of an emulsifier, 2% of a wetting agent, 1% of a dispersing agent, 3% of an antifreezing agent, 0.12% of a thickening agent, 0.2% of a preservative, 0.2% of an antifoaming agent, and deionized water to make up to 100%.
The emulsifier is purchased from Japanese catalyst, and the model is 7025; the wetting agent is available from clainn, model 2027, and the dispersant is available from Yijing-free science and technology, inc., model 1020P.
The thickening agent is xanthan gum, the antifreezing agent is ethylene glycol, and the preservative is sodium benzoate.
A preparation method of a imidaclothiz-containing two-component insecticidal composition suspending agent comprises the following steps:
weighing the components according to the formula, mixing the components, performing pre-dispersion, then sending into a sand mill for sand grinding and dispersion, and filtering to obtain the imidaclothiz-containing two-component insecticidal composition suspending agent.
Example 9
The specific steps of the two-component insecticidal composition suspending agent containing imidaclothiz are the same as those in example 8, and the difference is that the two-component insecticidal composition suspending agent contains 29% of imidaclothiz and 1% of emamectin benzoate in percentage by weight.
Example 10
The specific steps of the double-component insecticidal composition suspending agent containing imidaclothiz are the same as those in example 8, and the difference is that the suspending agent comprises 28% of imidaclothiz and 2% of emamectin benzoate by weight.
Example 11
The specific steps of the double-component insecticidal composition suspending agent containing imidaclothiz are the same as those in example 8, and the difference is that the suspending agent comprises 39% of imidaclothiz and 1% of emamectin benzoate by weight.
Example 12
A two-component insecticidal composition dispersible oil suspending agent containing imidaclothiz is prepared from imidaclothiz 18 wt%, emamectin benzoate 2 wt%, wetting agent 5 wt%, emulsifier 15 wt%, filler 2 wt%, dispersant 0.2 wt%, and methyl oleate up to 100 wt%.
The wetting agent is purchased from a model SP-OF3494D; the emulsifier is purchased from Sovalel and has the model of ODE286; the filler is organic bentonite; the dispersing agent is fumed silica.
A preparation method of a imidaclothiz-containing two-component insecticidal composition dispersible oil suspending agent comprises the following steps:
adding a wetting agent and an emulsifier into the methyl oleate, and uniformly mixing and dispersing; adding a filler, and stirring and mixing; under the condition of high-speed shearing and stirring, adding imidaclothiz and emamectin benzoate; grinding the mixture in a zirconium bead medium until the particle size is 3 mu m.
Example 13
A double-component insecticidal composition microcapsule suspension-suspending agent containing imidaclothiz is prepared from the following raw materials, by weight, 9% of imidaclothiz, 1% of emamectin benzoate, 10% of solvent oil, 5% of an oil-soluble capsule wall material, 0.5% of a water-soluble capsule wall material, 3% of an emulsifier, 5% of a dispersant, 3% of a stabilizer, 5% of an antifreeze, 0.2% of a preservative, 0.2% of an antifoaming agent, 0.15% of a thickening agent, and the balance of deionized water to 100%. GT-27, GT-34, 200# mineral spirits, PEN,
the oil-soluble capsule wall material is GT-27 which is toluene-2, 4-diisocyanate; GT-34 is used as a water-soluble capsule material and is triethyltetramine, PEN is polyethylene naphthalate which is purchased from Nanjing Cutian chemical Co. The solvent oil is 200# solvent oil and is purchased from Jiangsu Hualun chemical Co.
The thickening agent is xanthan gum, the antifreezing agent is ethylene glycol, and the preservative is sodium benzoate.
The emulsifier is available from Dow of America and is DOWFAX TM D-800Surfactant, available from Dow, USA under the model POWERLOX TM D-305Dispersant。
A preparation method of a double-component insecticidal composition microcapsule suspension-suspending agent containing imidaclothiz comprises the following steps:
dissolving emamectin benzoate in solvent oil, and adding an oil-soluble capsule material GT-27 to obtain an oil phase; adding an emulsifier and a dispersant accounting for 50% of the total mass into a proper amount of water to prepare a uniform water phase; adding the oil phase into the water phase, and shearing at high speed to disperse the oil phase into O/W type emulsion; slowly adding water-soluble capsule material GT-34 polyamine monomer aqueous solution into the suspension, and stirring to react to form the emamectin benzoate microcapsule suspending agent. After mixing the imidaclothiz with the rest of the dispersant and water, the imidaclothiz is subjected to pre-dispersion, enters a sand mill for sand grinding and dispersion, and is filtered to obtain the imidaclothiz suspending agent. The two single agents are stirred and mixed evenly to obtain the imidaclothiz-containing two-component insecticidal composition microcapsule suspension-suspending agent.
Performance testing
And (3) testing toxicity: the indoor toxicity of the two-component insecticidal composition containing imidaclothiz and emamectin benzoate in different proportions on the brown planthopper of the rice is determined. The test results are shown in Table 1.
TABLE 1
Calculating the mortality, corrected mortality, etc. of each treatment based on the survey data, performing data processing using DPS software, and calculating the LC of each drug 50 、LC 90 B value (standard error) and LC 50 95% confidence limit of. And calculating co-toxicity coefficient (CTC value) of the mixture according to Sun Yunpei method
In the formula: CTC-co-toxicity coefficient; ATI-measured toxicity index of mixed agent; TTI-theoretical virulence index of the mixture.
The co-toxicity coefficient (CTC) of the compound combination is more than or equal to 120, which shows a synergistic effect; CTC is less than or equal to 80 and shows antagonism; 80 < CTC < 120 shows additive effects.
The weight ratio of imidaclothiz to emamectin benzoate is (5-80): 1 has synergistic effect. 2, field efficacy test: the agents prepared in examples 1-13 were applied to rice fields and tested for field efficacy against brown planthopper, the results of which are shown in table 2. The emamectin benzoate emulsifiable concentrate is purchased from the biological science and technology company Limited of Qingdao Vandaisy in Shandong province; the imidaclothiz wettable powder is purchased from pesticide chemical industry Co., ltd.
TABLE 2
Claims (10)
1. The two-component insecticidal composition containing imidaclothiz is characterized in that the preparation raw materials at least comprise imidaclothiz and emamectin benzoate, and the weight ratio of the imidaclothiz to the emamectin benzoate is (5-80): 1.
2. the imidaclothiz-containing two-component insecticidal composition according to claim 1, wherein the weight ratio of the imidaclothiz to the emamectin benzoate is (30-50): 1.
3. the imidaclothiz-containing two-component insecticidal composition according to claim 1, wherein the raw materials for preparing the insecticidal composition further comprise an auxiliary agent, and the auxiliary agent is selected from one or a combination of several of an emulsifier, a dispersant, a thickener, a stabilizer, an anti-freezing agent, a preservative, an antifoaming agent, a filler, a solvent, a wetting agent, a cosolvent, a disintegrating agent, an adhesive, an oil-soluble capsule wall material and a water-soluble capsule wall material.
4. The imidaclothiz-containing two-component insecticidal composition according to claim 1, wherein the mass fraction of imidaclothiz and emamectin benzoate in the insecticidal composition is 10-80%.
5. The use of the imidaclothiz-containing two-component insecticidal composition according to any one of claims 1 to 4, wherein the imidaclothiz-containing two-component insecticidal composition is applied to one of water dispersible granules, wettable powder, water suspension, dispersible oil suspension, microcapsule suspension-suspension, emulsifiable concentrate, microemulsion and aqueous emulsion.
6. The application of the imidaclothiz-containing two-component insecticidal composition according to claim 5, which is characterized in that the imidaclothiz-containing two-component insecticidal composition is applied to wettable powder, and the preparation raw materials of the wettable powder comprise imidaclothiz, emamectin benzoate, a wetting agent, a dispersing agent and a filler.
7. The application of the imidaclothiz-containing two-component insecticidal composition according to claim 6, wherein the wetting agent is fatty alcohol-polyoxyethylene ether, and the EO value of the fatty alcohol-polyoxyethylene ether is 5-9.
8. The application of the imidaclothiz-containing two-component insecticidal composition according to claim 6, wherein the dispersant is one or more selected from sodium lignosulfonate, sodium methylene bis (methyl naphthalene) sulfonate, calcium lignosulfonate, and anionic carboxylate.
9. The application of the imidaclothiz-containing two-component insecticidal composition according to claim 6, wherein the filler is one or a combination of kaolin, attapulgite, bentonite, white carbon black and diatomite.
10. The application of the imidaclothiz-containing two-component insecticidal composition according to claim 5, wherein the imidaclothiz-containing two-component insecticidal composition is used for controlling hemiptera and homopteran pests on rice, vegetables, fruit trees and wheat crops.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102349503A (en) * | 2011-09-13 | 2012-02-15 | 广西田园生化股份有限公司 | Ultra-low-capacity liquid containing imidaclothiz |
| CN107711827A (en) * | 2017-10-18 | 2018-02-23 | 浙江农林大学 | A kind of dry desinsection micro emulsion granula and its preparation method and application of note for preventing and treating trees insect |
| CN108024538A (en) * | 2015-08-11 | 2018-05-11 | 江苏龙灯化学有限公司 | Synergistic insecticidal composition |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102349503A (en) * | 2011-09-13 | 2012-02-15 | 广西田园生化股份有限公司 | Ultra-low-capacity liquid containing imidaclothiz |
| CN108024538A (en) * | 2015-08-11 | 2018-05-11 | 江苏龙灯化学有限公司 | Synergistic insecticidal composition |
| CN107711827A (en) * | 2017-10-18 | 2018-02-23 | 浙江农林大学 | A kind of dry desinsection micro emulsion granula and its preparation method and application of note for preventing and treating trees insect |
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