CN113907069B - Glufosinate-ammonium moisturizing synergistic composition and preparation method thereof - Google Patents
Glufosinate-ammonium moisturizing synergistic composition and preparation method thereof Download PDFInfo
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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
- A01N25/02—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
- A01N25/06—Aerosols
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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
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
- A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals
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Abstract
The invention relates to a glufosinate-ammonium moisturizing synergistic composition and a preparation method thereof. The moisturizing synergistic composition comprises the following raw materials in percentage by mass: 1% -5% of sodium alginate; 1-5% of G-3801 functional polymer auxiliary agent; 1% -5% of an antifreezing agent; 0.05 to 0.5 percent of preservative; and adding deionized water to 100%. The preparation method comprises heating deionized water to 40-50 deg.C, adding antiseptic, antifreeze and sodium alginate, stirring, adding functional polymer adjuvant G-3801, and stirring. The moisturizing synergistic additive is added into the glufosinate-ammonium spray liquid by 0.5-2.0 percent (mass percentage), so that the moisturizing time of the liquid medicine can be obviously prolonged, the medicament is promoted to be better absorbed by weeds, the adverse effect of environmental humidity on the efficacy of glufosinate-ammonium is reduced, and the comprehensive control effect on the weeds is improved.
Description
Technical Field
The invention relates to a synergistic composition for moisturizing herbicide glufosinate-ammonium and a preparation method thereof, in particular to a synergistic composition for moisturizing glufosinate-ammonium and a preparation method thereof.
Background
Glufosinate-ammonium (Glufosinate), molecular formula C5H15N2O4P has molecular weight of 198.1574 and CAS number of 77182-82-2, belongs to phosphonic acids, non-selective contact type broad spectrum biocidal herbicide developed in 80 th century, ammonium metabolism in plants is disturbed after application, cytotoxic agent ammonium ions are accumulated in plants, photosynthesis is seriously inhibited, and the purpose of weeding is achieved. Albeit with oxalylaminoPhosphine can be transported upwards in xylem along with transpiration flow in plants and can also be transported to underground parts in phloem, but glufosinate-ammonium has poor conduction, the pesticide effect of glufosinate-ammonium is greatly influenced by the environment, and the influence of humidity on the pesticide effect of glufosinate-ammonium is most obvious. For a long time, the problem that the pesticide effect of glufosinate-ammonium is greatly influenced by the environmental humidity is a problem to be solved urgently for agricultural products.
Fatty Alcohol polyoxyethylene Ether sulfate (Sodium Alcohol Ether sulfate) is used as a green auxiliary agent, is used in a large amount in agricultural and chemical products, becomes a main auxiliary agent of the prior glufosinate-ammonium soluble agent, has a good synergistic effect, and can remarkably improve the viscosity of the glufosinate-ammonium preparation so as to improve the adhesive force of the preparation. However, the compatibility between glufosinate-ammonium and fatty alcohol-polyoxyethylene ether sulfate in aqueous solution is not good, and a large amount of polar solvents such as ethanol or methanol are often required to be added as a cosolvent.
Chinese patent CN106212453A discloses a glufosinate-ammonium water agent synergistic additive containing trimethyl amino acid, and the synergistic additive contains effective amount of trimethyl amino acid. The compound is suitable for various glufosinate-ammonium water aqua with glufosinate-ammonium content of 5% -50%, has excellent moisture retention and synergy effects, is strong in biodegradability, and is more beneficial to environmental protection. However, the glufosinate-ammonium water agent synergistic additive contains a large amount of surfactant.
Sodium alginate (sodium alginate) is natural polysaccharide carbohydrate extracted from herba Zosterae Marinae, white or light yellow dark brown amorphous powder, odorless, tasteless, easily soluble in water, and insoluble in organic solvent such as ethanol. Sodium alginate as a natural polymer material has the advantages of good biocompatibility, no toxicity, flame retardance, biodegradability and the like, and is widely applied to products of food, medicine, textile, printing and dyeing, papermaking, daily chemical industry and the like, and used as a thickening agent, an emulsifying agent, a stabilizing agent, an adhesive, a sizing agent and the like.
Emulsifiable concentrate polymer synergistic additive G-3801
Developed by Shantou Daqian high-tech research center LimitedA G series polymer emulsifier has the chemical name: the acrylic acid (ester) copolymer, CAS No. 25035-69-2, is a semitransparent gel water-soluble solid, and can be used as a thickener, a water retention agent, a film-forming material and other supramolecular polymers. The high molecular emulsifier is a novel emulsifier developed in 20 years, and the emulsifier is mainly developed by foreign international companies, such as enterprises in republic of Noyu, Ciba and the like, but is mostly applied to industries with higher price, such as the cosmetic industry, due to long production time and higher cost. Due to the cost limitation, the method is rarely applied to the pesticide industry. The emulsifier has different structures and various purposes, and is monopolized by international companies, so that a paper is published or a patent publication is disclosed rarely, and the research and development of the emulsifier do not draw attention from the national academia. The conventional structure of the G series high molecular emulsifier is a micro-crosslinking system, which is similar to the products of the international companies. The micro-crosslinking system is different from a linear body and a crosslinking body, and refers to a hydrophilic polymer system which can be infinitely mixed with water and has a spatial three-dimensional net-shaped property, and the relative molecular mass is usually 500-2000 ten thousand.
Disclosure of Invention
The invention aims to provide a glufosinate-ammonium moisturizing synergistic composition and a preparation method thereof, which can solve the problem that the effect of glufosinate-ammonium is greatly influenced by the environmental humidity. The invention mainly takes sodium alginate and a functional polymer auxiliary agent G-3801 as raw materials to prepare the functional polymer auxiliary agent G-3801-sodium alginate composition. Sodium alginate is a high-viscosity high-molecular compound, has carboxyl, strong hydrophilicity and strong protective colloid effect, forms a uniform acrylic copolymer-sodium alginate emulsion in a micro-crosslinking state after being matched with a functional high-molecular additive G-3801 according to a certain proportion, can obviously improve the water retention capacity, has a better synergistic effect on glufosinate-ammonium with bioactivity greatly influenced by air humidity, reduces the influence of environmental humidity on the pesticide effect of glufosinate-ammonium, enhances the moisture retention performance of glufosinate-ammonium liquid medicine, is beneficial to the absorption and utilization of medicaments, and improves the pesticide effect of glufosinate-ammonium.
The invention provides a glufosinate-ammonium moisturizing synergistic composition which comprises the following raw materials in percentage by mass: 1% -5% of sodium alginate; 1-5% of G-3801 macromolecular synergistic auxiliary; 1% -5% of an antifreezing agent; 0.05 to 0.5 percent of preservative; deionized water to make up 100%.
In the glufosinate-ammonium moisturizing synergistic composition, the mass ratio of sodium alginate to the functional polymer synergistic additive G-3801 is 1-5: 1-5. The preferred ratio is 1: 1.
The antifreezing agent is at least one of glycerol, propylene glycol or ethylene glycol.
The preservative is at least one of sodium benzoate, potassium sorbate or cason (chemical name: 2-methyl-4-isothiazoline-3-ketone or 5-chloro-2-methyl-4-isothiazoline-3-ketone).
The preparation method of the glufosinate-ammonium moisturizing synergistic composition provided by the invention comprises the following steps:
1) adding deionized water into a reaction kettle according to the measurement, heating and keeping the temperature between 40 ℃ and 50 ℃, and sequentially adding the preservative, the antifreeze and the sodium alginate into the reaction kettle to be stirred and dissolved;
2) then adding the polymer synergistic additive G-3801 into the reaction kettle in the step 1), keeping the water temperature at 40-50 ℃, and stirring until the polymer synergistic additive is completely dissolved;
3) cooling the reaction kettle of the step 2) to room temperature.
The application method of the glufosinate-ammonium moisturizing synergistic composition provided by the invention is that the glufosinate-ammonium moisturizing synergistic composition is used in a spraying liquid containing glufosinate-ammonium, and the addition amount of the glufosinate-ammonium moisturizing synergistic composition is 0.5-2.0% (mass percentage content) of the spraying liquid.
The invention provides a glufosinate-ammonium moisturizing synergistic composition and a preparation method thereof, which can solve the problem that the effect of glufosinate-ammonium is greatly influenced by the environmental humidity. The moisturizing composition is prepared by taking sodium alginate and an acrylic acid copolymer functional polymer auxiliary agent G-3801 as raw materials, wherein the sodium alginate is a high-viscosity polymer compound, has carboxyl and strong hydrophilicity, and has a strong protective colloid effect. Sodium alginate and the acrylic copolymer functional polymer additive G-3801 are matched according to a certain proportion, a very viscous and uniform solution or gel in a micro-cross-linked state can be formed, the water retention capacity can be obviously improved, the influence of environmental humidity on the drug effect of glufosinate-ammonium can be reduced, the moisture retention performance of glufosinate-ammonium liquid medicine can be enhanced, the absorption and the utilization of a medicament can be facilitated, and the drug effect of glufosinate-ammonium can be improved.
In a word, the sodium alginate and the acrylic copolymer functional polymer auxiliary agent G-3801 are matched according to a certain proportion to form a uniform acrylic copolymer-sodium alginate composition in a micro-cross-linked state, the composition has an obvious combined synergistic effect on the moisture retention capacity of pesticide spray liquid medicine when used at a certain concentration, and for the medicine of glufosinate, the biological activity of which is greatly influenced by air humidity, the composition can keep the wax on the surface of the weed leaf wet, so that the time for soaking the leaf with the liquid medicine can be prolonged; the high humidity can prolong the time of opening the air holes and increase the opening degree of the air holes, so that the herbicide glufosinate can enter the leaves more easily, ammonium in plants is accumulated rapidly, the plants die rapidly, and the comprehensive control effect on weeds is improved.
Drawings
FIG. 1 is a diagram of the effect of the moisturizing performance test of the glufosinate-ammonium moisturizing synergistic composition.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the following examples. The experimental methods in the examples, in which specific conditions are not specified, are generally performed under the conditions described in the manual and the conventional conditions, or under the conditions recommended by the manufacturer; general equipment, materials, reagents and the like used are commercially available unless otherwise specified.
Example 1
The preparation of the moisturizing synergistic composition comprises the following components in percentage by mass: 2% of sodium alginate; 3% of functional polymer auxiliary agent G-3801 (emulsifiable polymer synergistic auxiliary agent G-3801 (solid matter from faint yellow to light green at 25 ℃, solid content of more than or equal to 87%, pH value of 2.0% aqueous solution = 2.5-4.5, Shantou Daqian high tech research center, Ltd.), 3% of antifreeze glycol, 0.1% of preservative sodium benzoate and 100% of deionized water.
The preparation method comprises weighing deionized water according to formula proportion, heating to 40-50 deg.C in a reaction kettle, and adding antiseptic sodium benzoate, antifreeze glycerol and sodium alginate according to formula proportion under stirring; stirring and mixing uniformly, adding the functional polymer additive G-3801, continuously stirring and mixing uniformly, cooling the reaction kettle to room temperature (25-30 ℃), and obtaining the moisturizing synergistic composition.
Example 2
The preparation of the moisturizing synergistic composition comprises the following components in percentage by mass: 5% of sodium alginate; 5% of G-3801 functional polymer auxiliary agent; 5% of antifreeze glycerol; 0.15% of preservative Kathon; deionized water to make up 100%.
The preparation method comprises the steps of weighing deionized water according to a proportion, heating to 40-50 ℃, adding the preservative Kathon, the antifreezing agent glycerol and the polymer additive sodium alginate according to a proportion under the condition of continuous stirring, adding the functional polymer additive G-3801 after uniformly mixing, continuously stirring and uniformly mixing, and cooling a reaction kettle to room temperature to obtain the moisturizing synergistic composition.
Example 3
The preparation of the moisturizing synergistic composition comprises the following components in percentage by mass: 1% of sodium alginate; 1% of G-3801 functional polymer auxiliary agent; 3% of antifreeze propylene glycol; 0.1 percent of potassium sorbate; deionized water to make up 100%.
The preparation method comprises the steps of weighing deionized water according to a proportion, heating to 40-50 ℃, adding the preservative potassium sorbate, the antifreezing agent propylene glycol and the polymer additive sodium alginate according to a proportion under the condition of continuous stirring, adding the functional polymer additive G-3801 after uniformly mixing, continuously stirring and uniformly mixing, and cooling a reaction kettle to room temperature to obtain the moisturizing synergistic composition.
Example 4
The preparation of the moisturizing synergistic composition comprises the following components in percentage by mass: 2% of sodium alginate and 3% of antifreeze propylene glycol; 0.1 percent of potassium sorbate; deionized water to make up 100%.
The preparation method comprises the steps of weighing deionized water according to a certain proportion, heating to 40-50 ℃, adding the preservative potassium sorbate, the antifreeze propylene glycol and the macromolecular auxiliary agent sodium alginate according to a certain proportion under the condition of continuous stirring, continuously stirring and uniformly mixing, and cooling the reaction kettle to room temperature.
Example 5
Preparing a moisturizing synergistic composition, wherein the formula (quality) is as follows: 2% of G-3801 functional polymer auxiliary agent; 3% of antifreeze propylene glycol; 0.1 percent of potassium sorbate; deionized water to make up 100%.
The preparation method comprises the steps of weighing deionized water according to a certain proportion, heating to 40-50 ℃, adding the preservative potassium sorbate, the antifreezing agent propylene glycol and the functional polymer additive G-3801 according to a certain proportion under the condition of continuous stirring, continuously stirring and uniformly mixing, and cooling the reaction kettle to room temperature.
Examples effect test:
the moisture retention performance test adopts a dynamic dryness analyzer (manufactured by formula operation corporation, france) which utilizes multi-speckle diffusion wave spectroscopy and adopts an advanced interference light spot spectral imaging technology to record the speed change dynamic of the movement speed of water (or particles) in liquid drops from a very fast speed (wet state) to a very slow speed (dry state), and the change dynamic process can be quantified by a flowing factor (movement frequency) to a time change relation curve. During testing, a 5-microliter micro-sampler is adopted to take 2 microliter of sample to be added on a sample table, the temperature is 25 +/-1 ℃, the Relative Humidity (RH) is 50% +/-2% of the test liquid drop drying time, the medicament adopts 200g/L of glufosinate-ammonium aqua (provided by Shandong Lvba chemical corporation limited), the medicament is diluted by 100 times according to the field use concentration of 200g/L of glufosinate-ammonium aqua, the embodiment sample is adopted in the moisturizing synergistic composition, and the addition amount is 1% -2%. The moisture retention time is less than 10 according to the movement frequency of water (or particles) in the liquid drop-2As an end point, the moisturizing time of each sample was compared against a glufosinate spray solution without the addition of the examples. The test results are shown in FIG. 1.
TABLE 1 moisture retention Performance test comparison results
| Sample (I) | Adding amount of | Time to moisturize | Increase of moisture retention rate |
| Example 1 sample | 2% | 35 minutes 32 seconds | 37.6% |
| Example 1 sample | 0.5% | 29 minutes 32 seconds | 13.8% |
| Example 2 sample | 2% | 48 minutes and 16 seconds | 86.9% |
| Example 3 sample | 0.5% | 28 minutes and 13 seconds | 9.4% |
| Example 3 sample | 1% | 30 minutes 35 seconds | 18.4% |
| Example 4 sample | 1% | 28 minutes and 8 seconds | 8.9% |
| Example 5 sample | 1% | 28 minutes 58 seconds | 12.2% |
| Control | - | 25 minutes and 50 seconds | - |
The results of the comparison of the moisturizing performance tests show that the samples in the examples can improve the moisturizing time of the glufosinate-ammonium liquid medicine, and the moisturizing effect of the moisturizing composition of the sodium alginate and the functional polymer additive G-3801 is better than that of the moisturizing composition of the sodium alginate and the functional polymer additive G-3801 when the amounts of the moisturizing composition are the same, so that the moisturizing composition has a combined synergistic effect.
And (3) field efficacy test:
the test agent is 200g/L glufosinate-ammonium aqua (provided by Shandong Lvba chemical industry Co., Ltd.), the dosage of the preparation is 400ml per mu, the water consumption is 40 kg per mu, the moisturizing synergistic composition adopts an example sample, the addition amount is 0.5-2% of the spray solution, the application mode is stem and leaf spray, the weeding test of a non-cultivated land field is carried out, and the pesticide effect investigation is respectively carried out 7 days and 14 days after the pesticide application.
The test treatments are shown in Table 2 below
The herbicidal fruits were investigated 7 and 14 days after application, see table 3 below.
The field efficacy test result shows that the effect of the moisturizing composition can be obviously improved by adding the glufosinate-ammonium spray solution.
Claims (5)
1. A glufosinate-ammonium moisturizing synergistic composition is characterized in that: the raw materials comprise the following components in percentage by mass: 1% -5% of sodium alginate; 1-5% of G-3801 macromolecular synergistic auxiliary; 1% -5% of an antifreezing agent; 0.05 to 0.5 percent of preservative; deionized water to make up 100%;
the preparation method comprises the following steps:
1) adding deionized water into a reaction kettle according to the measurement, heating and keeping the temperature between 40 ℃ and 50 ℃, and sequentially adding the preservative, the antifreeze and the sodium alginate into the reaction kettle to be stirred and dissolved;
2) then adding the polymer synergistic additive G-3801 into the reaction kettle in the step 1), keeping the water temperature at 40-50 ℃, and stirring until the polymer synergistic additive is completely dissolved;
3) cooling the reaction kettle in the step 2) to room temperature;
the mass ratio of the sodium alginate to the functional polymer synergistic auxiliary G-3801 is 1: 1.
2. The glufosinate moisturizing synergistic composition of claim 1, wherein: the antifreezing agent is at least one of glycerol, propylene glycol or ethylene glycol.
3. The glufosinate moisturizing synergistic composition of claim 1, wherein: the preservative is at least one of sodium benzoate, potassium sorbate or kasong.
4. A method for preparing a glufosinate moisturizing synergistic composition according to any one of claims 1 to 3, characterized by comprising the steps of:
1) adding deionized water into a reaction kettle according to the measurement, heating and keeping the temperature between 40 ℃ and 50 ℃, and sequentially adding the preservative, the antifreeze and the sodium alginate into the reaction kettle to be stirred and dissolved;
2) then adding the polymer synergistic additive G-3801 into the reaction kettle in the step 1), keeping the water temperature at 40-50 ℃, and stirring until the polymer synergistic additive is completely dissolved;
3) cooling the reaction kettle of the step 2) to room temperature.
5. The application method of the glufosinate-ammonium moisture-retention synergistic composition as claimed in any one of claims 1 to 3, characterized in that the glufosinate-ammonium moisture-retention synergistic composition is applied to a spray liquid containing glufosinate-ammonium, and the added mass percentage of the glufosinate-ammonium moisture-retention synergistic composition is 0.5% -2.0% of the spray liquid.
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