CN112205411A - Nano dispersible oil suspending agent containing clethodim and quinclorac and preparation method and application thereof - Google Patents
Nano dispersible oil suspending agent containing clethodim and quinclorac and preparation method and application thereof Download PDFInfo
- Publication number
- CN112205411A CN112205411A CN202011232844.0A CN202011232844A CN112205411A CN 112205411 A CN112205411 A CN 112205411A CN 202011232844 A CN202011232844 A CN 202011232844A CN 112205411 A CN112205411 A CN 112205411A
- Authority
- CN
- China
- Prior art keywords
- nano
- quinclorac
- clethodim
- parts
- agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
- A01N43/42—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings condensed with carbocyclic rings
-
- 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
-
- 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
- A01N25/08—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 solids as carriers or diluents
-
- 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
- A01N25/32—Ingredients for reducing the noxious effect of the active substances to organisms other than pests, e.g. toxicity reducing compositions, self-destructing compositions
-
- 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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/02—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms
- A01N43/04—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom
- A01N43/14—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings
- A01N43/18—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one or more oxygen or sulfur atoms as the only ring hetero atoms with one hetero atom six-membered rings with sulfur as the ring hetero atom
Landscapes
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Toxicology (AREA)
- Dispersion Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a nano dispersible oil suspension containing clethodim and quinclorac, and a preparation method and application thereof, and relates to the technical field of herbicides. The nanometer dispersible oil suspending agent containing the clethodim and the quinclorac is prepared from the following components in parts by mass based on 100 parts by mass: 7.5-15 parts of clethodim, 2.5-5 parts of quinclorac, 0.1-10 parts of nano-carrier, 1-10 parts of wetting agent, 1-10 parts of dispersing agent, 0.1-1 part of defoaming agent, 7.5-15 parts of safety agent, 0.1-1 part of stabilizing agent, 1-5 parts of antifreezing agent, 0.1-5 parts of thickening agent and the balance of vegetable oil. According to the invention, the drug property of the herbicide in the paddy field is enhanced by reasonably proportioning the clethodim and the quinclorac; meanwhile, the effective components of the pesticide are loaded by the nano carrier, so that the weeding composition has quick response and long duration, improves the utilization rate of the pesticide, and further reduces the spraying frequency and the dosage.
Description
Technical Field
The invention relates to the technical field of herbicides, and in particular relates to a nano dispersible oil suspending agent containing clethodim and quinclorac, and a preparation method and the technical field of application thereof.
Background
Rice is one of the main grain crops in China, and weeding of the rice is a great problem in production. Chemical weeding is currently the main means of controlling weeds. In recent years, resistance has been developed in many weeds due to the large area of individual use of some herbicide species. Meanwhile, when weeds occur, the weeds are complicated in appearance and various in variety, and the weeds in the farmland cannot be effectively solved by using a single variety, so that the weeds in the farmland all show the defects of a certain aspect.
At present, the market has multiple herbicides, the application technology requirement is high, and the problems of phytotoxicity, poor weeding effect and the like can occur if the herbicides are applied carelessly. Improper selection of herbicides will directly affect the safety risk or yield of humans or crops. With the development of weeding technology and the continuous emergence of herbicides, many weeds in farmlands are increasingly difficult to kill.
The clethodim is cyclohexanone oxime herbicide, belongs to fatty acid synthetase inhibitor and can inhibit acetyl coenzyme A carboxylase. The weeds stop growing and the leaves turn yellow or red when they are conducted to meristematic tissue in the plant body. Can be used for preventing and killing gramineous weeds in paddy fields, such as alopecurus, wild oat, crab grass, goosegrass herb, arthroncus, crowndaisy, wheatgrass and the like.
The quinclorac belongs to a quinoline carboxylic acid hormone type selective herbicide, is mainly used for preventing and killing monocotyledonous weeds in rice fields, particularly has extremely high activity on barnyard grass, has similar weed poisoning symptoms with auxin effects, is mainly used for preventing and controlling the barnyard grass, and has long working life and effective leaf period of 1-7. The rice has good safety.
The composition of different varieties is the most common method for preventing and controlling resistant weeds. The different components are compounded, so that the control effect can be improved, the weed control spectrum is expanded, the using amount of the effective components is reduced, the medication cost is saved, the environmental pollution is reduced, and the method is an important means for comprehensively controlling the field weeds.
At present, the technology for preparing the nanometer dispersible oil suspending agent containing the clethodim and the quinclorac by adopting a nanometer carrier technology is not researched. How to solve the technical problems is a technical problem to be solved in the technical field of the current herbicides.
Disclosure of Invention
The invention provides a nano dispersible oil suspending agent containing clethodim and quinclorac, and a preparation method and application thereof aiming at the technical problems.
The technical scheme adopted by the invention is as follows: the total mass part is calculated by 100 parts, and is prepared from the following components in parts by mass: 7.5-15 parts of clethodim, 2.5-5 parts of quinclorac, 0.1-10 parts of nano-carrier, 1-10 parts of wetting agent, 1-10 parts of dispersing agent, 0.1-1 part of defoaming agent, 7.5-15 parts of safety agent, 0.1-1 part of stabilizing agent, 1-5 parts of antifreezing agent, 0.1-5 parts of thickening agent and the balance of vegetable oil.
On the basis of the scheme, the mass ratio of the clethodim to the quinclorac is (3-6): (1-2), and the total mass of the clethodim and the quinclorac accounts for 10-20% of the total mass of the nano dispersible oil suspending agent.
On the basis of the scheme, the nano-carrier is one of hydrophilic gas-phase nano-silica, hydrophobic gas-phase nano-silica, oily nano-silver particles, oily gold nanoparticles, gas-phase nano-titanium dioxide and nano-calcium carbonate.
On the basis of the scheme, the vegetable oil is one or more of epoxidized soybean oil, methyl oleate and corn oil; the dispersant is one or more of salts of lignosulfonate, alkyl naphthalene sulfonate and formaldehyde condensate; the defoaming agent is one of polysiloxane or ester-ether type compounds; the safener is one or more of mefenpyr-diethyl, fenchlorazole and dichlormid; the stabilizer is one or more of BH-2, 6-di-tert-butyl-4-methylphenol, butyl hydroxy anisole and epichlorohydrin.
On the basis of the scheme, the wetting agent is one or more of phenethyl phenol polyoxyethylene ether, calcium dodecyl benzene sulfonate, polysorbate, sorbitan fatty acid ester, phenethyl phenol polyoxypropylene ether, nonylphenol polyoxyethylene ether, alkylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, polyoxyethylene ether carboxylate, polyoxyethylene ether and castor oil ethylene oxide addition product.
On the basis of the scheme, the antifreezing agent is one of urea, sorbitol, propylene glycol or glycerol; the thickening agent is one or more of bentonite, gaseous silicon dioxide, magnesium aluminum silicate, xanthan gum and white carbon black.
The invention also develops a preparation method of the nanometer dispersible oil suspending agent containing the clethodim and the quinclorac, which comprises the following steps:
s1, weighing the components of the formula of the nano dispersible oil suspending agent containing the clethodim and the quinclorac according to the component proportion;
s2, adding the clethodim and the quinclorac into the solvent oil, heating and stirring the mixture and dissolving the clethodim and the quinclorac to prepare a solution A;
s3, carrying out surface modification on the nano-carrier by adopting a surfactant wrapping method to ensure that the modified nano-carrier has a lipophilic surface shell;
s4, adding the modified nano-carrier into the solution A, and stirring and mixing the mixture at a high speed to obtain a stable nano-parent drug; the scanning electron microscope shows that the effective components in the nanometer mother medicine are uniformly dispersed in the carrier material, and the nanometer microsphere full of the effective components of the pesticide is formed without obvious core-shell structure;
s5, adopting an adsorption-encapsulation method, respectively adding a compound emulsifier, a dispersant, a thickener and a wetting agent into the nano mother medicine, uniformly mixing, and then carrying out homogeneous shearing grinding to obtain the nano dispersible oil suspending agent containing the clethodim and the quinclorac; the particle size distribution of the nanometer preparation is relatively uniform, and the average particle size is 100 + -10 nm.
On the basis of the above scheme, in step S3, the nano-carrier is surface-modified with a modifier alginic acid.
On the basis of the scheme, the nano-carrier modification method comprises the following steps: alginic acid with the mass of 8-20% of the nano carrier is weighed, and purified water is used for preparing the alginic acid with the concentration of 0.04-0.09 mol.L-1Adjusting the pH value of the alginic acid solution to 6, and then adding a nano carrier into the alginic acid solution for reaction for 45 min; filtering to obtain the modified nano-carrier.
And testing the infrared absorption spectrum before and after the modification of the nano-carrier. The infrared spectrum analysis of the alginic acid modified nano-carrier shows that the absorption peak of asymmetric stretching vibration of the metal carboxylate exists, but the unreacted alginic acid does not show the peak in the infrared spectrum. The infrared spectrum shows that the hydroxyl on the surface of the nano-carrier particle undergoes the esterification reaction of acid and alcohol, and the modified nano-carrier formed by the method has a lipophilic surface shell and is easy to combine with lipophilic pesticides by an adsorption-encapsulation method.
The invention takes the gas-phase nano titanium dioxide as a carrier, prepares the clethodim and the quinclorac nano dispersible oil suspending agent by wet grinding, gives a new era significance to the clethodim and the quinclorac nano dispersible oil suspending agent, and makes the clethodim and the quinclorac nano dispersible oil suspending agent cross the ranks of novel and environment-friendly preparations.
As the gas phase nano titanium dioxide loads part of the pesticide active ingredients, the nano titanium dioxide has small particle size and large specific surface area, and the hydroxyl on the surface of the nano carrier particle is subjected to esterification reaction of acid and alcohol after the nano titanium dioxide is modified by alginic acid, the modified nano carrier has a lipophilic surface shell.
Meanwhile, the weed leaf surfaces have structures such as wax layers, villi, pores, epidermal cells and the like and have certain hydrophobicity, so that the lipophilicity of the pesticide is increased by adding the gas-phase nano titanium dioxide, the adsorption effect of the pesticide preparation on the weed leaves is enhanced, the rain washing resistance is increased, the duration is prolonged, the persistence and the utilization rate of the preparation are improved, the use frequency of the pesticide is reduced, and the use amount of the pesticide is reduced.
The invention also develops the application of the nano dispersible oil suspending agent containing the clethodim and the quinclorac, and the nano dispersible oil suspending agent containing the clethodim and the quinclorac is used for weeding weeds in a rice field.
The invention has the beneficial effects that:
1. the invention uses gas phase nanometer titanium dioxide to load the effective components of the pesticide, improves the performance of the preparation and is environment-friendly;
2. according to the invention, the gas-phase nano titanium dioxide is used as a carrier, the cycloprione and quinclorac nano dispersible oil suspending agent is prepared by wet grinding, the nano titanium dioxide has a lipophilic shell after being modified, and the leaf surfaces of weeds have structures such as a waxy layer, villi, pores, epidermal cells and the like and have certain hydrophobicity, so that the lipophilicity of pesticides is increased by adding the gas-phase nano titanium dioxide, the adsorption effect of the pesticide preparation on the weed leaves is enhanced, the rain washing resistance is increased, and the duration is prolonged;
3. the modified nano gas-phase titanium dioxide has a lipophilic shell, and under the direct sunlight, the hydroxyl on the surface of the modified nano particles is subjected to esterification reaction of acid and alcohol, so that the absorption of ultraviolet light is increased, and the prepared nano pesticide has high degradation activity, so that the pesticide residue on the surface of crops is reduced, and the pollution of the pesticide to the environment is reduced;
4. the invention reasonably matches the proportion of the clethodim and the quinclorac in the herbicide, enhances the drug effect of the herbicide, has better weed control effect on paddy fields than the activity of each component when being applied independently, simultaneously expands the weed control spectrum, improves the weeding effect, has outstanding control effect on gramineous weeds, cyperaceae weeds and broadleaf weeds, and has the advantages of quick effect, long lasting period, delaying the drug resistance of the herbicide, thorough weeding, low residue, low toxicity, safety, environmental protection and the like.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The experimental procedures used in the following examples are all conventional procedures unless otherwise specified.
Materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Example 1
The proportion of each formula of the nanometer dispersible oil suspending agent containing the clethodim and the quinclorac is selected
Formula 1: the total mass part is calculated by 100 parts, and is prepared from the following components in parts by mass: 7.5 parts of clethodim, 2.5 parts of quinclorac, 5 parts of nano-carrier, 10 parts of wetting agent, 3 parts of dispersing agent, 1 part of defoaming agent, 7.5 parts of safety agent, 0.1 part of stabilizing agent, 1 part of antifreezing agent, 5 parts of thickening agent and the balance of vegetable oil.
And (2) formula: the total mass part is calculated by 100 parts, and is prepared from the following components in parts by mass: 10 parts of clethodim, 5 parts of quinclorac, 0.1 part of nano-carrier, 1 part of wetting agent, 1 part of dispersing agent, 0.5 part of defoaming agent, 15 parts of safety agent, 1 part of stabilizing agent, 5 parts of antifreezing agent, 2 parts of thickening agent and the balance of vegetable oil.
And (3) formula: the total mass part is calculated by 100 parts, and is prepared from the following components in parts by mass: 15 parts of clethodim, 3 parts of quinclorac, 10 parts of nano-carrier, 6 parts of wetting agent, 10 parts of dispersing agent, 0.1 part of defoaming agent, 9 parts of safety agent, 0.7 part of stabilizing agent, 3 parts of antifreezing agent, 0.1 part of thickening agent and the balance of vegetable oil.
Comparative example formulation 1: comparative formula 1 the same proportions of the components were set according to formula 1, except that quinclorac was not added and 10 parts of clethodim were added.
Comparative example formulation 2: comparative formula 2 the same proportions of the components were set according to formula 1, except that clethodim was not added and 10 parts of quinclorac were added.
Example 2
Preparation of each formula of nano dispersible oil suspending agent containing clethodim and quinclorac
Formulations 1, 2 and 3, and comparative formulations 1 and 2, were prepared according to the following procedure, respectively.
S1, weighing the components of the formula of the nano dispersible oil suspending agent containing the clethodim and the quinclorac according to the component proportion;
s2, adding the clethodim and the quinclorac into the vegetable oil, heating and stirring the mixture, and dissolving the clethodim and the quinclorac to prepare a solution A;
s3, adding the modified nano-carrier into the solution A, and stirring and mixing the mixture at a high speed to obtain a stable solution B;
and S4, adding the compound emulsifier, the dispersant, the thickener and the wetting agent into the solution B respectively, mixing uniformly, and then carrying out homogeneous shearing and grinding to obtain the nanometer dispersible oil suspending agent containing the clethodim and the quinclorac.
In step S3, the nano-carrier is surface-modified with alginic acid, which is a modifier.
The nano-carrier modification method comprises the following steps: weighing alginic acid with the mass of 8-20% of that of the nano carrier, preparing a alginic acid solution with the concentration of 0.04-0.09 mol.L < -1 > by using purified water, adjusting the pH to 6, and then adding the nano carrier into the alginic acid solution for reaction for 45 min; filtering to obtain the modified nano-carrier.
It should be noted that, after the above formulations are prepared, the composition and appearance meet the following requirements: the product is prepared by processing raw clethodim and quinclorac which meet the standard, an auxiliary agent and vegetable oil, and is a flowable suspension liquid with an easily-measured volume; the sediment may appear in the storage process, but the sediment should be restored to the original state and should not be caked after being shaken by hands; meanwhile, the respective physicochemical indexes in table 1 are satisfied.
TABLE 1 physical and chemical index requirements for dispersible oil suspensions of the present invention
Example 3
Test of pesticide effect in paddy field
Grouping experiments: formula 1, formula 2 and formula 3 were used as experimental groups; comparative formula 1 and comparative formula 2, and randomly selecting a conventional rice field herbicide on the market.
The test method comprises the following steps: the dosage of the preparation is 20-35 g/mu, and the stem leaves are sprayed at the 2-3 leaf stage of the weeds.
The test results of the pesticide effect test in the rice field are shown in table 2.
TABLE 2 test results of the field pesticide effect test of rice
As can be seen from the data in Table 2, compared with the prior art, the nano dispersible oil suspension containing the clethodim and the quinclorac has better effect of preventing and killing weeds in the rice field, the clethodim is a cyclohexanone oxime herbicide and belongs to a fatty acid synthetase inhibitor, and the nano dispersible oil suspension is mainly used for preventing and killing gramineous weeds such as barnyard grass, cymbopogon, large crabgrass, moleplant seeds, green bristlegrass, cudweed and the like in the rice field. The quinclorac belongs to a quinoline carboxylic acid hormone type selective herbicide, is mainly used for preventing and killing monocotyledonous weeds in rice fields, particularly has extremely high activity on barnyard grass, has similar weed poisoning symptoms to auxin effects, and is effective in 1-7 leaf periods.
Wherein, the co-toxicity coefficient of the formula 1 to the weeds in the paddy field is the highest, and the control efficiency is as high as 93 percent; the control effect of the formula 2 is 89%; the control effect of the formula 3 is 85 percent; the pesticide effects of the three formulas are superior to those of the formula 1 in the comparative example, the formula 2 in the comparative example and the conventional herbicide for the rice field sold in the market, and no phytotoxicity to the rice is found in the test and investigation process.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The nanometer dispersible oil suspending agent containing the clethodim and the quinclorac is characterized by comprising the following components in parts by mass based on 100 parts by mass: 7.5-15 parts of clethodim, 2.5-5 parts of quinclorac, 0.1-10 parts of nano-carrier, 1-10 parts of wetting agent, 1-10 parts of dispersing agent, 0.1-1 part of defoaming agent, 7.5-15 parts of safety agent, 0.1-1 part of stabilizing agent, 1-5 parts of antifreezing agent, 0.1-5 parts of thickening agent and the balance of vegetable oil.
2. The nano dispersible oil suspension concentrate containing clethodim and quinclorac according to claim 1, wherein the mass ratio of the clethodim to the quinclorac is (3-6): (1-2), and the total mass of the clethodim and the quinclorac accounts for 10-20% of the total mass of the nano dispersible oil suspending agent.
3. The nano dispersible oil suspending agent containing clethodim and quinclorac according to claim 1, wherein the nano carrier is one of hydrophilic fumed nano silica, hydrophobic fumed nano silica, oily nano silver particles, oily gold nanoparticles, fumed nano titanium dioxide and nano calcium carbonate.
4. The nano-dispersible oil suspension concentrate of claim 1, wherein the vegetable oil is one or more of epoxidized soybean oil, methyl oleate, and corn oil; the dispersant is one or more of salts of lignosulfonate, alkyl naphthalene sulfonate and formaldehyde condensate; the defoaming agent is one of polysiloxane or ester-ether type compounds; the safener is one or more of mefenpyr-diethyl, fenchlorazole and dichlormid; the stabilizer is one or more of BH-2, 6-di-tert-butyl-4-methylphenol, butyl hydroxy anisole and epichlorohydrin.
5. The nano dispersible oil suspension concentrate containing clethodim and quinclorac according to claim 1, wherein the wetting agent is one or more of phenethyl phenol polyoxyethylene ether, calcium dodecyl benzene sulfonate, polysorbate, sorbitan fatty acid ester, phenethyl phenol polyoxypropylene ether, nonylphenol polyoxyethylene ether, alkylphenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, polyoxyethylene ether carboxylate, polyoxyethylene ether and castor oil ethylene oxide adduct.
6. The nano dispersible oil suspension concentrate containing clethodim and quinclorac according to claim 1, wherein the anti-freezing agent is one of urea, sorbitol, propylene glycol or glycerol; the thickening agent is one or more of bentonite, gaseous silicon dioxide, magnesium aluminum silicate, xanthan gum and white carbon black.
7. A preparation method of the nano dispersible oil suspending agent containing the clethodim and the quinclorac in any one of the claims 1-6, which is characterized by comprising the following steps:
s1, weighing the components of the formula of the nano dispersible oil suspending agent containing the clethodim and the quinclorac according to the component proportion;
s2, adding the clethodim and the quinclorac into the solvent oil, heating and stirring the mixture and dissolving the clethodim and the quinclorac to prepare a solution A;
s3, carrying out surface modification on the nano-carrier by adopting a surfactant wrapping method to ensure that the modified nano-carrier has a lipophilic surface shell;
s4, adding the modified nano-carrier into the solution A, and stirring and mixing the mixture at a high speed to obtain a stable nano-parent drug; the scanning electron microscope shows that the effective components in the nanometer mother medicine are uniformly dispersed in the carrier material, and the nanometer microsphere full of the effective components of the pesticide is formed without obvious core-shell structure;
s5, adopting an adsorption-encapsulation method, respectively adding a compound emulsifier, a dispersant, a thickener and a wetting agent into the nano mother medicine, uniformly mixing, and then carrying out homogeneous shearing grinding to obtain the nano dispersible oil suspending agent containing the clethodim and the quinclorac; the particle size distribution of the nanometer preparation is relatively uniform, and the average particle size is 100 + -10 nm.
8. The method for preparing the nano dispersible oil suspension containing the clethodim and the quinclorac according to the claim 7, wherein the nano carrier is subjected to surface modification by using alginic acid serving as a modifier in the step S3.
9. The preparation method of the nano dispersible oil suspending agent containing the clethodim and the quinclorac in the claim 8, wherein the nano carrier modification method comprises the following steps: alginic acid with the mass of 8-20% of the nano carrier is weighed, and purified water is used for preparing the alginic acid with the concentration of 0.04-0.09 mol.L-1Adjusting the pH value of the alginic acid solution to 6, and then adding a nano carrier into the alginic acid solution for reaction for 45 min; filtering to obtain the modified nano-carrier.
10. The use of the nano-dispersible oil suspension containing the clethodim and the quinclorac according to any one of claims 1 to 6, wherein the nano-dispersible oil suspension containing the clethodim and the quinclorac is used for weeding weeds in a rice field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232844.0A CN112205411A (en) | 2020-11-06 | 2020-11-06 | Nano dispersible oil suspending agent containing clethodim and quinclorac and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011232844.0A CN112205411A (en) | 2020-11-06 | 2020-11-06 | Nano dispersible oil suspending agent containing clethodim and quinclorac and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112205411A true CN112205411A (en) | 2021-01-12 |
Family
ID=74058311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011232844.0A Pending CN112205411A (en) | 2020-11-06 | 2020-11-06 | Nano dispersible oil suspending agent containing clethodim and quinclorac and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112205411A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111825480A (en) * | 2020-08-13 | 2020-10-27 | 西藏大学 | Ultraviolet-resistant super-hydrophobic anti-freezing material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1977602A (en) * | 2005-12-01 | 2007-06-13 | 北京化工大学 | Avermectins long-effective slow-release oil suspension agent and preparing method |
| CN103444806A (en) * | 2013-09-10 | 2013-12-18 | 苏州莲花岛生态农业专业合作社 | Hyacinth plant based nano slow-release oil suspending agent and preparation method thereof |
-
2020
- 2020-11-06 CN CN202011232844.0A patent/CN112205411A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1977602A (en) * | 2005-12-01 | 2007-06-13 | 北京化工大学 | Avermectins long-effective slow-release oil suspension agent and preparing method |
| CN103444806A (en) * | 2013-09-10 | 2013-12-18 | 苏州莲花岛生态农业专业合作社 | Hyacinth plant based nano slow-release oil suspending agent and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘广文主编: "《现代农药剂型加工技术》", 31 January 2013, 化学工业出版社 * |
| 孙洪涛等: "水田除草剂环苯草酮", 《农药》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111825480A (en) * | 2020-08-13 | 2020-10-27 | 西藏大学 | Ultraviolet-resistant super-hydrophobic anti-freezing material and preparation method thereof |
| CN111825480B (en) * | 2020-08-13 | 2022-11-04 | 西藏大学 | Ultraviolet-resistant super-hydrophobic anti-freezing material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109964940A (en) | A kind of application of miticide composition and its preparation, miticide composition and preparation | |
| WO2009000470A1 (en) | Methods of controlling insects | |
| WO2020042730A1 (en) | Biphenyl compound-containing liquid preparation and application thereof | |
| CN104970024A (en) | Herbicide composition and using method thereof | |
| CN112205411A (en) | Nano dispersible oil suspending agent containing clethodim and quinclorac and preparation method and application thereof | |
| WO2020103646A1 (en) | Method for preparing micro-capsule suspension-suspension agent containing lambda-cyhalothrin and lufenuron and micro-capsule suspension-suspension agent thereof | |
| CN103338639A (en) | Insecticidal composition comprising sulphur, acaricide and agrochemical excipients | |
| CN111493067B (en) | Pesticide combination synergist and application thereof | |
| EP2545088A1 (en) | A preformed concentrate for delivery of water insoluble film forming polymers | |
| CN116114702A (en) | Compound composition of florasulam and pinoxaden and preparation method thereof | |
| JP2007077044A (en) | Suspensible agrochemical preparation | |
| CN114176074A (en) | Suspending agent assistant prepared by compounding glufosinate-ammonium with quizalofop-p-ethyl and oxyfluorfen | |
| JP2002363005A (en) | Stabilized agricultural aqueous suspension | |
| CN102365957B (en) | A kind of Uniconazole microemulsion, preparation method and application | |
| CN102334485B (en) | Synergistic herbicidal pesticide composite | |
| JP3804072B2 (en) | Aqueous suspension pesticide formulation | |
| CN112205410A (en) | Nano dispersible oil suspending agent containing clethodim and cyhalofop-butyl and preparation method and application thereof | |
| US10264791B2 (en) | Odor-reduced pyrethroid-organothiophosphate formulations | |
| CN101606540A (en) | High-performance cyhalothrin pesticide aqueous emulsion and preparation method thereof | |
| CN114503995B (en) | Dispersible oil suspending agent containing atrazine, mesotrione and nicosulfuron and preparation method thereof | |
| CN103997889A (en) | A novel aqueous suspoemulsion | |
| CN115968902A (en) | Acetamiprid and efficient cyhalothrin-containing aqueous suspension and preparation method thereof | |
| CN112335668B (en) | Weeding composition, preparation method and application thereof | |
| CN103960243A (en) | Herbicide composition and usage thereof | |
| CN112772663B (en) | Composition containing fluoride phenylate amide and penconazole, preparation and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210112 |
|
| RJ01 | Rejection of invention patent application after publication |