CN111493067B - Pesticide combination synergist and application thereof - Google Patents
Pesticide combination synergist and application thereof Download PDFInfo
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- CN111493067B CN111493067B CN202010295654.7A CN202010295654A CN111493067B CN 111493067 B CN111493067 B CN 111493067B CN 202010295654 A CN202010295654 A CN 202010295654A CN 111493067 B CN111493067 B CN 111493067B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/22—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing ingredients stabilising the active ingredients
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/30—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
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- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Plant Pathology (AREA)
- Toxicology (AREA)
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Abstract
The invention discloses a pesticide combination synergist and application thereof, wherein the active ingredients of the synergist comprise alkynol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and methyl oleate. The compounding of the three substances can reduce the final surface tension to below 25mN/m, and the effect can be comparable to that of the organosilicon surfactant. Meanwhile, the alkynol polyoxyethylene ether has dynamic defoaming property, and after the alkynol polyoxyethylene ether is compounded with the isomeric polyoxyethylene ether and the methyl oleate, the system foam is further greatly reduced, so that the alkynol polyoxyethylene ether and the isomeric polyoxyethylene ether are more favorably spread on the leaf surface, and the wetting effect is better.
Description
Technical Field
The invention relates to the technical field of pesticide auxiliary agents, in particular to a pesticide combination synergist and application thereof.
Background
Agricultural development cannot be separated from pesticides, but pesticides bring harm to the natural environment while making great contribution to agricultural development. Under the conditions of continuously increasing population, decreasing land, increasing food demand and increasing environmental requirements, people are required to develop more efficient and safe new pesticides. The new pesticide has long development period, large investment, high risk and low success rate, and is especially a modern high-efficiency and super-high-efficiency pesticide variety. Therefore, the pesticide synergist has gradually played an important role in pesticides due to advantages such as simple composition, strong operability, remarkable synergism in the case of adding a small amount of the pesticide synergist, and the like.
The pesticide synergist is one of pesticide adjuvants, has no pesticide activity such as insecticidal activity and antibacterial activity, and can achieve the purposes of improving the control effect of the pesticide per unit area and reducing the pesticide dosage by reducing the surface tension of the pesticide, increasing the permeability or adhesive force of the pesticide, realizing the synergistic effect of the pesticide effect and the like. The use of the pesticide synergist is an important method of a high-efficiency reduction application technology of pesticides, and is one of important means for reducing the pesticide cost of farmers, slowing down the resistance of pests and reducing the environmental pollution at present.
At present, the widely used synergist is mainly of an organic silicon type, and the surface tension of the liquid medicine on the leaf surface can be greatly reduced, so that the synergistic purpose is achieved, but the long-term use of the synergist can cause the problem of subsequent phytotoxicity. Therefore, there is a need to develop a pesticide synergist which can not only greatly increase the pesticide effect, but also has no subsequent effect on plants, thereby better promoting the needs of society and related industries.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the silicone synergist in the prior art can cause subsequent phytotoxicity, thereby providing a pesticide combination synergist.
The invention also provides application of the pesticide combination synergist.
Therefore, the invention provides a pesticide combination synergist, and the effective components of the pesticide combination synergist comprise alkynol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and methyl oleate.
Further, the mass ratio of the alkynol polyoxyethylene ether to the isomeric alcohol polyoxyethylene ether to the methyl oleate is 6-10: 2-6: 3-5.
Furthermore, the number of EO in the alkynol polyoxyethylene ether is 7-10.
Furthermore, the number of EO in the isomeric alcohol polyoxyethylene ether is 9-13.
Further, an alcohol solvent is also included.
Further, the mass percentage of the effective components is 75-95% of the total mass of the synergist.
Further, the alkynol polyoxyethylene ether is fatty alkynol polyoxyethylene ether and/or aryl alkynol polyoxyethylene ether, wherein the number of carbon atoms of fatty alkynol in the fatty alkynol polyoxyethylene ether is C3-C14, and the number of carbon atoms of aryl alkynol in the aryl alkynol polyoxyethylene ether is C8-C14.
Furthermore, the number of the carbon atoms of the isomeric alcohol in the isomeric alcohol polyoxyethylene ether is C5-C15.
Further, the alcohol solvent is one or more of methanol, ethanol, propanol, propylene glycol, glycerol, butanol and pentanol.
The invention also provides application of the synergist in bactericides, insecticides or herbicides.
Furthermore, the addition amount of the synergist is 1-15% of the total mass of the bactericide, the pesticide or the herbicide.
The technical scheme of the invention has the following advantages:
1. the pesticide combination synergist provided by the invention has the advantages that the effective components comprise alkynol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and methyl oleate, the final surface tension can be reduced to below 25mN/m by compounding the three substances, and the effect can be comparable to that of an organic silicon surfactant. Meanwhile, the alkynol polyoxyethylene ether has dynamic defoaming property, and after the alkynol polyoxyethylene ether is compounded with the isomeric polyoxyethylene ether and the methyl oleate, the system foam is further greatly reduced, so that the alkynol polyoxyethylene ether and the isomeric polyoxyethylene ether are more favorably spread on the leaf surface, and the wetting effect is better.
2. According to the pesticide combination synergist provided by the invention, due to the unique carbon-carbon triple bond of the alkynol polyoxyethylene ether, when the EO number is 7-13, the system has proper solubility in an aqueous phase system, the EO number is too high, the solubility of the alkynol polyoxyethylene ether is too high, and the surface tension of the alkynol polyoxyethylene ether can be obviously increased; the EO number is too low, and the alkynol polyoxyethylene ether is difficult to dissolve in water. The liquid medicine spraying device has excellent dynamic surface tension, can reduce the dynamic surface tension of the liquid medicine to a great extent, is more suitable for spraying operation, can realize the optimal state of volatilization and deposition of the liquid medicine, and has excellent static surface tension performance. The alkynol polyoxyethylene ether also has excellent dynamic leveling property and foam inhibition capability, so that the foam of the liquid medicine is greatly reduced in the dynamic spraying process, and the liquid medicine can be more widely and uniformly spread on the leaf surfaces of plants, thereby enlarging the action area of the liquid medicine, promoting the absorption of the liquid medicine on the leaf surfaces, and achieving the purpose of synergism.
3. According to the pesticide combination synergist provided by the invention, the isomeric alcohol polyoxyethylene ether is used as an auxiliary wetting synergist in the system, when the EO number is 9-13, the system has proper solubility in a water phase system, the EO number is too high, the solubility of the isomeric alcohol polyoxyethylene ether is too high, and the surface tension is obviously increased; the EO number is too low, and the isomeric alcohol polyoxyethylene ether is difficult to dissolve in water. The surface tension of the liquid medicine on the leaf surfaces can be reduced to a great extent, and the liquid medicine has partial emulsification effect, so that the preparation is more stable, and the alkynol polyoxyethylene ether and the isomeric alcohol polyoxyethylene ether are both nonionic surfactants, do not exist in an ionic state in the solution, have high stability, are not easily influenced by the existence of strong electrolyte, are not easily influenced by acid and alkali, can be mixed with other types of surfactants for use in the using process, have good compatibility, have good solubility in various solvents, do not strongly adsorb on the solid surface, and make the pesticide preparation more stable; the structure of the methyl oleate is similar to that of oil and fat and plant foliar ester, the affinity of the liquid medicine on the surface of the plant can be improved, the adhesive force is increased, the purpose of synergy can be further achieved, and meanwhile, the cost of the synergist can be reduced due to the addition of the isomeric alcohol polyoxyethylene ether and the methyl oleate.
4. The pesticide combination synergist provided by the invention also comprises an alcohol solvent, wherein the alcohol solvent has good intersolubility with alkynol polyoxyethylene ether and isomeric alcohol polyoxyethylene ether, and the alcohol solvent has good intersolubility with water, so that the stability of the whole system in water can be improved. Meanwhile, the alcohol solvent has good wettability, and the addition of the alcohol solvent in the system can not only increase the intersolubility of the system, but also increase the wettability of the liquid medicine to the leaf surfaces, thereby achieving the purpose of synergism.
5. The pesticide combination synergist provided by the invention can replace the traditional organic silicon synergist, so that the stability of the preparation is improved under the condition of partial acid or partial alkali, and the problem that organic silicon is easy to cause insect pests is greatly solved; the pesticide composition has the advantages of improving the control effect of the pesticide, delaying the generation of resistance, prolonging the life cycle of pesticide varieties and the like, has good universality, is suitable for the preparation of various bactericides, insecticides and herbicide medicines, and improves the economic benefit.
Detailed Description
The following examples are provided to further understand the present invention, not to limit the scope of the present invention, but to provide the best mode, not to limit the content and the protection scope of the present invention, and any product similar or similar to the present invention, which is obtained by combining the present invention with other prior art features, falls within the protection scope of the present invention.
The examples do not show the specific experimental steps or conditions, and can be performed according to the conventional experimental steps described in the literature in the field. The reagents or instruments used are not indicated by manufacturers, and are all conventional reagent products which can be obtained commercially.
Example 1
A pesticide combination synergist comprises, by mass, 50% of acetylene butanol polyoxyethylene ether (7 EO, KM485, optimized chemical), 10% of isomeric decyl alcohol polyoxyethylene ether (9 EO, SP-106, optimized chemical), 25% of methyl oleate and 15% of methanol solvent.
Example 2
A pesticide combination synergist comprises 30% of propargyl amyl alcohol polyoxyethylene ether (9 EO, KM489, optimized chemical), 30% of isomeric tridecanol polyoxyethylene ether (11 EO, 1311, optimized chemical), 15% of methyl oleate and 25% of ethanol solvent by mass fraction.
Example 3
A pesticide combination synergist comprises, by mass, 40% of acetylenic dodecanol polyoxyethylene ether (10 EO, KM480, optimized chemical), 20% of isomeric pentadecanol polyoxyethylene ether (13 EO, 1513, optimized chemical), 20% of methyl oleate and 20% of butanol solvent.
Example 4
A pesticide combination synergist comprises, by mass, 50% of alkynyldodecanol polyoxyethylene ether (10 EO, KM470, optimized chemical), 30% of isomeric pentadecanol polyoxyethylene ether (13 EO, 1513, optimized chemical), 15% of methyl oleate and 5% of propanol solvent.
Example 5
A pesticide combination synergist comprises, by mass, 50% of aryl propargyl alcohol polyoxyethylene ether (10 EO, KM440, optimized chemical), 30% of isomeric pentadecanol polyoxyethylene ether (13 EO, 1513, optimized chemical), 15% of methyl oleate and 5% of propanol solvent.
Comparative example 1
A pesticide combination synergist comprises 95 wt% of acetylene butanol polyoxyethylene ether (7 EO, KM110, optimized chemical) and 5 wt% of glycerol.
Comparative example 2
A pesticide combination synergist comprises, by mass, 50% of propargyl amyl alcohol polyoxyethylene ether (8 EO, KM120, optimized chemical), 10% of lauryl alcohol polyoxyethylene ether (9 EO, AEO-9, optimized chemical), 25% of methyl oleate and 15% of methanol solvent.
Comparative example 3
A pesticide combination synergist comprises 75% of acetylene butanol polyoxyethylene ether (8 EO, KM130, optimized chemical), 5% of isomeric decyl alcohol polyoxyethylene ether (9 EO, 1009, optimized chemical), 5% of methyl oleate and 15% of methanol solvent by mass fraction.
Experimental example 1
According to all the examples or comparative examples, the combined synergist is prepared into 50% imidacloprid aqueous Suspension (SC) respectively, and the specific preparation method is as follows: 50% of imidacloprid original drug, 3% of dispersant DP-9016 (optimized chemistry), 2% of emulsifier 703D (optimized chemistry), 1% of composite synergist in the embodiment of the invention, 0.1% of defoaming agent, 0.1% of thickening agent and the balance of water which is up to 100%. And (3) sanding by using a sand mill according to the proportion, and filtering to obtain a final sample, namely the 50% imidacloprid SC. The surface tension test method comprises the following steps: the 50% imidacloprid SC is prepared into a 1g/L solution, and the dynamic surface tension and the final static surface tension at 100ms are tested by a dynamic surface tensiometer at 25 ℃. The method for testing the acid and alkali resistance comprises the following steps: taking 10g/L of surfactant, adding NaOH solid or 98% concentrated sulfuric acid, standing at a specified temperature for 120 minutes, and observing that the amount of NaOH or concentrated sulfuric acid when layering or oil floating occurs is the maximum acid and alkali resistance. The method for testing the protection rate comprises the following steps: selecting a piece of rice which is located in Shanghai Chongming and has 4g of 50 percent imidacloprid SC per mu, mainly observing the population (head) of white-backed planthopper before and after 7 days of pesticide application, and calculating the protection rate (%) - (the amount of insects before pesticide application-the amount of insects after pesticide application) divided by the amount of insects before pesticide application multiplied by 100 percent. The above final test results are shown in table 1.
TABLE 150% Imidacloprid SC the results are tabulated
Experimental example 2
According to all the examples or comparative examples, the combined synergist is prepared into 50% acetochlor Emulsifiable Concentrate (EC) respectively, and the specific preparation method is as follows: 50% of acetochlor technical material, 5% of emulsifier 703D (optimized chemical) and 601% of agricultural milk#(optimization chemistry) 3%, the composite synergist of the embodiment of the invention is 2%, and the xylene is complemented to 100%. Mechanically stirring for 1000r/min for 1h to obtain 50% acetochlor EC. The surface tension test method comprises the following steps: the 50% acetochlor EC above was formulated in a 1g/L solution and tested for dynamic surface tension and final static surface tension values at 100ms with a dynamic surface tensiometer at 25 ℃. The method for testing the acid and alkali resistance comprises the following steps: taking 10g/L of surfactant, adding NaOH solid or 98% concentrated sulfuric acid, standing at a specified temperature for 120 minutes, and observing that the amount of NaOH or concentrated sulfuric acid when layering or oil floating occurs is the maximum acid and alkali resistance. The method for testing the protection rate comprises the following steps: selecting a piece of grassland at Shanghai Chongming, 6g of 50% acetochlor EC per mu, mainly observing the death number (plants) of weeds before and after 7 days of application, and calculating the protection rate (%) (the amount of weeds before application-the amount of weeds after application) divided by the amount of weeds before applicationX 100%. The above final test results are shown in table 2.
TABLE 250% acetochlor EC TABLE
Experimental example 3
According to all the examples or comparative examples, the combined synergist is prepared into 5% allicin Microemulsion (ME) respectively, and the specific preparation method is as follows: 5% of allicin original drug, 10% of isopropanol, 10% of dimethylbenzene, 5% of emulsifier 703D (optimization chemistry), and 500% of agricultural emulsion#(optimization chemistry) 5%, agricultural milk 600#(optimization chemistry) 5%, the composite synergist in the embodiment of the invention is 3%, and the balance of water is supplemented to 100%. Firstly, adding allicin, dimethylbenzene, isopropanol, an emulsifier and a synergist into a flask, and stirring for 0.5h at 1000r/min by adopting mechanical stirring; then dropwise adding water to a set dosage while stirring, and continuously stirring for 1h to finally obtain a mixed liquid, namely 5% allicin ME. The surface tension test method comprises the following steps: the above 5% allicin ME was formulated into a 1g/L solution and tested for dynamic surface tension at 100ms and final static surface tension value with a dynamic surface tensiometer at 25 ℃. The method for testing the acid and alkali resistance comprises the following steps: taking 10g/L surfactant, adding NaOH solid or 98% concentrated sulfuric acid, standing at a specified temperature for 120 minutes, and observing that the amount of NaOH or concentrated sulfuric acid when layering or oil floating occurs is the maximum acid and alkali resistance. The method for testing the protection rate comprises the following steps: selecting a piece of rice which is Chongming from Shanghai, 4g of 5% allicin ME per mu, measuring the inhibiting effect of the 5% allicin water emulsion on various plant pathogenic bacteria of the rice, and mainly observing the change (strain) of the plant pathogenic bacteria before and after 7 days of pesticide application, wherein the calculation (%) of the protection rate is (the number of original strains before pesticide application-original strain tree after pesticide application) divided by original strain tree before pesticide application multiplied by 100%. The above final test results are shown in table 3.
TABLE 35% allicin ME results table
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. A pesticide combination synergist is characterized in that the effective components comprise alkynol polyoxyethylene ether, isomeric alcohol polyoxyethylene ether and methyl oleate;
the mass ratio of the alkynol polyoxyethylene ether to the isomeric alcohol polyoxyethylene ether to the methyl oleate is 6-10: 2-6: 3-5;
the number of EO in the alkynol polyoxyethylene ether is 7-10;
the number of EO in the isomeric alcohol polyoxyethylene ether is 9-13.
2. The enhancer combination for agricultural chemicals according to claim 1, further comprising an alcohol solvent.
3. The pesticide combination synergist according to claim 2, wherein the mass percentage of the active ingredient is 75-95% of the total mass of the synergist.
4. The enhancer combination for agricultural chemicals according to claim 1, wherein the polyoxyethylene alkynol ether is a fatty polyoxyethylene alkynol ether and/or an polyoxyethylene arylalkynol ether, wherein the number of carbon atoms of the fatty alkynol in the fatty polyoxyethylene alkynol ether is from C3 to C14, and the number of carbon atoms of the arylalkynol in the polyoxyethylene arylalkynol ether is from C8 to C14.
5. The enhancer combination for agricultural chemicals according to claim 1, wherein the number of carbon atoms of the isomeric alcohol in the isomeric alcohol polyoxyethylene ether is from C5 to C15.
6. The pesticide combination synergist according to claim 2, wherein the alcohol solvent is one or more of methanol, ethanol, propanol, propylene glycol, glycerol, butanol and pentanol.
7. Use of the synergist according to any one of claims 1-6 in fungicides, insecticides or herbicides.
8. The use according to claim 7, wherein the synergist is added in an amount of 1-15% by weight based on the total mass of the fungicide, insecticide or herbicide.
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| CN114732011A (en) * | 2022-03-17 | 2022-07-12 | 佳化化学科技发展（上海）有限公司 | Fluorine-containing pesticide synergist and preparation method and application thereof |
| CN115281187B (en) * | 2022-08-11 | 2023-11-24 | 北京广源益农化学有限责任公司 | Stable pesticide synergist and preparation method thereof |
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