CN111657278A - Glufosinate-ammonium assistant, glufosinate-ammonium aqueous solution prepared by using glufosinate-ammonium assistant and preparation method of glufosinate-ammonium aqueous solution - Google Patents
Glufosinate-ammonium assistant, glufosinate-ammonium aqueous solution prepared by using glufosinate-ammonium assistant and preparation method of glufosinate-ammonium aqueous solution 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
- A01N25/30—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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- 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
- 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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- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Wood Science & Technology (AREA)
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a glufosinate-ammonium assistant and a glufosinate-ammonium aqueous solution prepared by the same. The auxiliary agent comprises the following components in percentage by weight: 10-15% of fatty alcohol-polyoxyethylene ether, 10-15% of alkyl glycoside, 15-20% of cocamidopropyl betaine, 10-20% of alkylamine polyoxyethylene ammonium nitrate and the balance of water. The glufosinate-ammonium water agent comprises the following components in percentage by weight: 50% of glufosinate-ammonium raw powder, 15% of an auxiliary agent and the balance of water. The invention also provides a preparation method of the glufosinate-ammonium aqua. The auxiliary agent contained in the glufosinate-ammonium aqueous solution can effectively improve the drug effect of the glufosinate-ammonium aqueous solution, and particularly can play a good stability role in the high-content glufosinate-ammonium aqueous solution.
Description
Technical Field
The invention relates to the technical field of glufosinate-ammonium additives, and particularly relates to a glufosinate-ammonium additive, a glufosinate-ammonium aqueous solution prepared by the glufosinate-ammonium additive and a preparation method of the glufosinate-ammonium aqueous solution.
Background
Glufosinate-ammonium belongs to a phosphoric acid herbicide, is a glutamine synthesis inhibitor, is a non-selective contact-killing broad-spectrum biocidal herbicide with partial systemic action, ammonium metabolism in plants is trapped in disorder in a short time after application, and a cytotoxic agent ammonium ion is accumulated in the plants, so that the photosynthesis is seriously inhibited, and the aim of weeding is fulfilled. Has the characteristics of high activity, low toxicity, good environmental compatibility and the like.
After the domestic paraquat is forbidden, the domestic dosage of the glufosinate-ammonium is increased year by year, and meanwhile, the glufosinate-ammonium aqua is gradually diversified from the traditional 200g/L aqua, and has aqua dosage forms with low content of 10 percent and high content of 50 percent. The traditional glufosinate-ammonium assistant is difficult to stabilize 50% of high-content glufosinate-ammonium aqueous solution, so that even under the condition of having high-content glufosinate-ammonium aqueous solution, the drug effect is not very high.
In view of the above-mentioned shortcomings of the prior art, the present inventors have made extensive research and innovation based on the practical experience and professional knowledge of many years of designing and manufacturing such products, and by using the theory, and finally have invented the present invention with practical value after continuous research, design, and repeated trial and improvement.
Disclosure of Invention
The invention mainly aims to overcome the defect that the traditional glufosinate-ammonium assistant is difficult to stabilize a 50% high-content glufosinate-ammonium aqueous solution and the drug effect is not very high even under the condition of having the high-content glufosinate-ammonium aqueous solution, and provides the glufosinate-ammonium assistant, the glufosinate-ammonium aqueous solution prepared by the glufosinate-ammonium assistant and a method for preparing the glufosinate-ammonium aqueous solution. The glufosinate-ammonium assistant provided by the invention can be used in a glufosinate-ammonium aqueous solution, and can ensure that the glufosinate-ammonium aqueous solution has a high drug effect under the condition of high content of glufosinate-ammonium.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme.
The invention provides a glufosinate-ammonium auxiliary agent which comprises the following components in percentage by weight: 10-15% of fatty alcohol-polyoxyethylene ether, 10-15% of alkyl glycoside, 15-20% of cocamidopropyl betaine, 10-20% of alkylamine polyoxyethylene ammonium nitrate and the balance of water.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
The invention provides a glufosinate-ammonium aqueous solution containing the glufosinate-ammonium assistant, which comprises the following components in percentage by weight: 50% of glufosinate-ammonium raw powder, 10-20% of an auxiliary agent and the balance of water.
The glufosinate-ammonium water agent containing the glufosinate-ammonium assistant comprises the following components in percentage by weight: 50% of glufosinate-ammonium raw powder, 15% of an auxiliary agent and the balance of water.
The object of the present invention and the technical problem to be solved are also achieved by the following technical means.
The invention provides a method for preparing a glufosinate solution containing a glufosinate auxiliary agent, which comprises the following steps:
(1) preparing alkylamine polyoxyethylene ammonium nitrate;
(2) mixing the alkylamine polyoxyethylene ammonium nitrate obtained in the step (1) with fatty alcohol-polyoxyethylene ether, alkyl glycoside, cocamidopropyl betaine and water in proportion, and then uniformly stirring to obtain an auxiliary agent;
(3) and (3) mixing the auxiliary agent obtained in the step (2) with the glufosinate-ammonium raw powder and water in a ratio and uniformly stirring to obtain the glufosinate-ammonium aqua containing the glufosinate-ammonium auxiliary agent.
The preparation method, wherein the alkylamine polyoxyethylene ammonium nitrate in the step (1) is prepared by the following steps:
a. adding alkylamine polyoxyethylene ether, dimethyl carbonate and a solvent into a sealed reaction kettle, replacing air in the kettle with nitrogen, carrying out quaternization reaction under the stirring condition, cooling to 50-60 ℃ after the reaction is finished, and removing excessive dimethyl carbonate and the solvent under reduced pressure to obtain methyl carbonate quaternary ammonium salt;
b. HNO is added into the obtained methyl carbonate quaternary ammonium salt3Neutralizing, and removing by-product CO under reduced pressure2And reacting with the solvent to obtain alkylamine polyoxyethylene ammonium nitrate.
In the preparation method, in the step a, the alkylamine polyoxyethylene ether and dimethyl carbonate are mixed according to a molar ratio of 1:1 is added; the solvent is methanol, and the mass of the solvent accounts for 40% of the mass of the reaction product.
In the preparation method, the quaternization reaction conditions in the step a are as follows: the temperature is 40-60 ℃, and the time is 2-6 h.
In the preparation method, HNO is neutralized in the methyl carbonate quaternary ammonium salt in the step b3Mixed in a molar ratio of 1: 1.
In the preparation method, in the step (2), the alkylamine polyoxyethylene ammonium nitrate, the fatty alcohol polyoxyethylene ether, the alkyl glycoside, the cocamidopropyl betaine and the water are mixed according to the weight percentage of (10-20): (10-15): (15-20): 30-55).
In the preparation method, in the step (3), the auxiliary, the glufosinate-ammonium raw powder and the water are mixed according to the weight percentage of 1.5:5: 3.5.
By the technical scheme, the invention at least has the following advantages:
(1) the invention provides alkylamine polyoxyethylene ammonium nitrate which can play a good stability role in a high-content glufosinate-ammonium aqueous solution and can improve the drug effect of the glufosinate-ammonium aqueous solution compared with a traditional surfactant monomer.
(2) The invention also provides an auxiliary agent used in glufosinate-ammonium, which solves the problem that the traditional glufosinate-ammonium auxiliary agent is difficult to stabilize 50% of high-content glufosinate-ammonium aqueous solution.
(3) The preparation method of the glufosinate-ammonium aqua is simple, easy to operate, suitable for industrial production and wide in application prospect.
In conclusion, the special glufosinate-ammonium assistant and the glufosinate-ammonium aqueous agent and the method prepared by the special glufosinate-ammonium assistant are high in weeding speed and good in effect. The glufosinate-ammonium aqua has the advantages and practical values, similar design is not published or used in similar products, so that the glufosinate-ammonium aqua is innovative, the components or functions of the product are greatly improved, the technology is greatly improved, good and practical effects are produced, and the glufosinate-ammonium aqua has multiple enhanced effects compared with the existing glufosinate-ammonium aqua, so that the glufosinate-ammonium aqua is more practical, has industrial wide utilization value, and is a novel, improved and practical new design.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention.
Specific embodiments of the present invention are given in detail by the following examples.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to the glufosinate-ammonium adjuvant and the glufosinate-ammonium aqueous solution and method prepared by the same according to the present invention, and the detailed implementation manner, method and effects thereof.
According to the auxiliary agent, the auxiliary agent comprises the following components in percentage by weight: 10-15% of fatty alcohol-polyoxyethylene ether, 10-15% of alkyl glycoside, 15-20% of cocamidopropyl betaine, 10-20% of alkylamine polyoxyethylene ammonium nitrate and the balance of water. The fatty alcohol-polyoxyethylene ether is lauryl alcohol to stearyl alcohol, and the EO number is 10-20.
According to the glufosinate-ammonium aqueous solution containing the glufosinate-ammonium auxiliary agent, the glufosinate-ammonium aqueous solution contains the following components in percentage by weight: 50% of glufosinate-ammonium raw powder, 10-20% of an auxiliary agent and the balance of water. Preferably, the glufosinate-ammonium water agent comprises the following components in percentage by weight: 50% of glufosinate-ammonium raw powder, 15% of an auxiliary agent and the balance of water.
The method for preparing the glufosinate-ammonium aqua comprises the following stepsThe method comprises the following steps: (1) preparing alkylamine polyoxyethylene ammonium nitrate; (2) mixing the alkylamine polyoxyethylene ammonium nitrate obtained in the step (1) with fatty alcohol-polyoxyethylene ether, alkyl glycoside, cocamidopropyl betaine and water in proportion, and then uniformly stirring to obtain an auxiliary agent; (3) and (3) mixing the auxiliary agent obtained in the step (2) with the raw glufosinate-ammonium powder and water in a ratio and uniformly stirring to obtain the glufosinate-ammonium aqua containing the auxiliary agent. Wherein, the alkylamine polyoxyethylene ammonium nitrate in the step (1) is prepared according to the following steps: a. adding alkylamine polyoxyethylene ether, dimethyl carbonate and a solvent into a sealed reaction kettle, replacing air in the kettle with nitrogen, carrying out quaternization reaction under the stirring condition, cooling to 50-60 ℃ after the reaction is finished, and removing excessive dimethyl carbonate and the solvent under reduced pressure to obtain methyl carbonate quaternary ammonium salt; b. HNO is added into the obtained methyl carbonate quaternary ammonium salt3Neutralizing, and removing by-product CO under reduced pressure2And reacting with the solvent to obtain alkylamine polyoxyethylene ammonium nitrate. Further, in the step a, the molar ratio of alkylamine polyoxyethylene ether to dimethyl carbonate is 1:1 is added. The solvent is methanol, and the mass of the solvent accounts for 40% of the mass of the total reaction mass. The quaternization reaction conditions in the step a are as follows: the temperature is 40-60 ℃, and the time is 2-6 h. Neutralizing HNO in methyl carbonate quaternary ammonium salt in step b3Mixed in a molar ratio of 1: 1. In the step (2), alkylamine polyoxyethylene ammonium nitrate, fatty alcohol polyoxyethylene ether, alkyl glycoside, cocamidopropyl betaine and water are mixed according to the weight percentage of (10-20): (10-15): (15-20): (30-55). And (4) mixing the auxiliary agent, the glufosinate-ammonium raw powder and water according to the weight percentage of 1.5:5: 3.5.
The alkylamine polyoxyethylene ammonium nitrate according to the invention has the following specific reaction equation:
wherein R is C12-C14, R1And R2Is polyoxyethylene radical, R1And R2The EO number of (B) is in the range of 5 to 7.
The following examples are given in detail, based on 100 parts of the total amount.
Example 1
Preparing alkylamine polyoxyethylene ammonium nitrate: weighing a certain amount of alkylamine polyoxyethylene ether, dimethyl carbonate (the molecular ratio of the alkylamine polyoxyethylene ether to the dimethyl carbonate is 1: 1) and methanol (accounting for 40 percent of the mass of the reaction product) to be added into a sealed reaction kettle, replacing air in the kettle with nitrogen, and heating to 50 ℃ under the stirring condition to carry out quaternization for 4 hours. After the reaction is finished, the temperature is reduced to about 50-60 ℃, and excessive dimethyl carbonate and methanol are removed under reduced pressure to obtain the methyl carbonate quaternary ammonium salt. Then, HNO is added according to the mole number of the intermediate product3Neutralizing, and removing by-product CO under reduced pressure2And methanol to obtain alkylamine polyoxyethylene ammonium nitrate.
Preparing an auxiliary agent: 15 parts of the obtained dodecylamine polyoxyethylene ammonium nitrate (5 EO), 20 parts of cocamidopropyl betaine, 10 parts of lauryl polyoxyethylene ether (10 EO), 12 parts of alkyl glycoside and 43 parts of water are mixed in proportion, added into a reaction kettle and stirred uniformly to prepare the glufosinate-ammonium assistant.
Preparing a glufosinate-ammonium water agent: mixing 50 parts of glufosinate-ammonium raw powder, 15 parts of glufosinate-ammonium auxiliary agent and 35 parts of water, and fully and uniformly stirring to obtain the glufosinate-ammonium aqua.
Example 2
Preparing alkylamine polyoxyethylene ammonium nitrate: weighing a certain amount of alkylamine polyoxyethylene ether, dimethyl carbonate (the molecular ratio of the alkylamine polyoxyethylene ether to the dimethyl carbonate is 1: 1) and methanol (accounting for 40 percent of the mass of the reaction product) to be added into a sealed reaction kettle, replacing air in the kettle with nitrogen, and heating to 60 ℃ under the stirring condition to carry out quaternization for 2 hours. After the reaction is finished, the temperature is reduced to about 50-60 ℃, and excessive dimethyl carbonate and methanol are removed under reduced pressure to obtain the methyl carbonate quaternary ammonium salt. Then, HNO is added according to the mole number of the intermediate product3Neutralizing, and removing by-product CO under reduced pressure2And methanol to obtain alkylamine polyoxyethylene ammonium nitrate.
Preparing an auxiliary agent: 20 parts of the obtained tetradecylamine polyoxyethylene ammonium nitrate (6 EO), 15 parts of cocamidopropyl betaine, 15 parts of tetradecanol polyoxyethylene ether (15 EO), 15 parts of alkyl glycoside and 35 parts of water are mixed in proportion, added into a reaction kettle and stirred uniformly to prepare the glufosinate-ammonium assistant.
Preparing a glufosinate-ammonium water agent: mixing 50 parts of glufosinate-ammonium raw powder, 15 parts of glufosinate-ammonium auxiliary agent and 35 parts of water, and fully and uniformly stirring to obtain the glufosinate-ammonium aqua.
Example 3
Preparing alkylamine polyoxyethylene ammonium nitrate: weighing a certain amount of alkylamine polyoxyethylene ether, dimethyl carbonate (the molecular ratio of the alkylamine polyoxyethylene ether to the dimethyl carbonate is 1: 1) and methanol (accounting for 40 percent of the mass of the reaction product) to be added into a sealed reaction kettle, replacing air in the kettle with nitrogen, and heating to 40 ℃ under the stirring condition to carry out quaternization for 6 hours. After the reaction is finished, the temperature is reduced to about 50-60 ℃, and excessive dimethyl carbonate and methanol are removed under reduced pressure to obtain the methyl carbonate quaternary ammonium salt. Then, HNO is added according to the mole number of the intermediate product3Neutralizing, and removing by-product CO under reduced pressure2And methanol to obtain alkylamine polyoxyethylene ammonium nitrate.
Preparing an auxiliary agent: 10 parts of the obtained tetradecylamine polyoxyethylene ammonium nitrate (7 EO), 18 parts of cocamidopropyl betaine, 12 parts of octadecanol polyoxyethylene ether (20 EO), 10 parts of alkyl glycoside and 50 parts of water are mixed in proportion, added into a reaction kettle and stirred uniformly to prepare the glufosinate-ammonium assistant.
Preparing a glufosinate-ammonium water agent: mixing 50 parts of glufosinate-ammonium raw powder, 15 parts of glufosinate-ammonium auxiliary agent and 35 parts of water, and fully and uniformly stirring to obtain the glufosinate-ammonium aqua.
Comparative example 1
Mixing 50 parts of glufosinate-ammonium raw powder, 15 parts of commercially available glufosinate-ammonium auxiliary agent and 35 parts of water, and fully and uniformly stirring to obtain the glufosinate-ammonium aqua.
Test example 1 aqueous glufosinate stability test
Test subjects: the aqueous glufosinate solutions prepared in examples 1-3 and the aqueous glufosinate solution of comparative example 1.
The test method comprises the following steps: the 50% glufosinate-ammonium aqua is subjected to an alternate experiment of hot storage at 55 ℃ and cold storage at-10 ℃, the stability condition of the preparation is observed, and the statistics of the results are shown in table 1.
TABLE 1 stability statistics for glufosinate-ammonium aqua
As can be seen from the results in table 1, the glufosinate-ammonium aqueous solutions of examples 1 to 3 showed better stability in the heat storage and cold storage alternation experiment; comparative example 1 performed well in the first 14 days of stabilization experiments, and the phenomenon of instability occurred in both the later hot and cold storage.
Test example 2 evaluation of herbicidal Effect of aqueous Glufosinate (see "test criteria for agricultural chemical field Effect")
1. Test subjects: the weeds in the test plot naturally grow without human factor interference, and the perennial trailing broadleaf weeds and the perennial trailing gramineous weeds are mainly used.
2. The cell arrangement and the application are shown in table 2, wherein CK is clear water control.
TABLE 2 cell arrangement and administration
3. Method of administering a drug
The using method comprises the following steps: the dosage is 36ml/15L water, and the water is added for directional spraying for 0.5 mu.
The use amount is as follows: in the test, 36ml/15L of 50% glufosinate-ammonium aqua is set; the dosage of each cell is 1.8ml/0.75L of water. Meanwhile, clear water is set as reference CK.
4. Applicator device
The model is as follows: MSB151 type backpack electric sprayer; working pressure: 0.15-0.4 MPa; spray amount: 1.2-1.8L/min; capacity of the water tank: 16L; voltage: DC 12V.
5. Investigation method, time and number of times
Investigation time and number of times
After application, the mixed herbs are investigated for symptoms 1 day, 3 days and 5 days after application of 1/12, 1/14, 1/16, 1/18 and 1/20, and the aboveground part mortality of weeds is also investigated on 7 days. A total of 4 surveys were conducted.
Weed investigation
In each repetition and in each same repetition cell of the experiment, 4 random point samples are taken in each cell by adopting a pesticide effect level method, the survival plant number of the main weeds is respectively recorded in each point of 0.25m, and the weed death rate is calculated according to the standard of a table 3.
6. The statistics of the investigation results are shown in Table 4.
TABLE 3 evaluation criteria for efficacy grade
Wherein 0 is no grass, and 100% is full grass control effect.
TABLE 4 herbicidal efficacy of aqueous glufosinate-ammonium solutions
As can be seen from tables 3 and 4, on the 3 rd day after application, most of the leaf surfaces of the weeds in the experimental area except the blank group begin to turn yellow, and a small part of perennial weeds still maintain green; on day 5, most of the grasses in the groups of examples 1-3 began to die and a small number of perennial weeds began to yellow, whereas a small number of the grasses in comparative example 1 began to die and a small number of perennial weeds remained green; on day 7, the weeds in all the test plots were mostly dead except for the blank group, and by comparing the final death rate, the weeds in examples 1 to 3 had a mortality rate of 96% or more, while the weeds in comparative example 1 had a mortality rate of 90.5% and perennial weeds were still green.
Therefore, aiming at 50% of glufosinate-ammonium aqua, the formula of the auxiliary agent in the patent is superior to the traditional glufosinate-ammonium auxiliary agent in storage stability; the 50% glufosinate-ammonium water agent prepared by the formula of the glufosinate-ammonium assistant is superior to the 50% glufosinate-ammonium water agent prepared by the traditional glufosinate-ammonium assistant in the aspects of quick-acting property in the early weeding period and final weeding death rate.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The glufosinate-ammonium auxiliary comprises the following components in percentage by weight: 10-15% of fatty alcohol-polyoxyethylene ether, 10-15% of alkyl glycoside, 15-20% of cocamidopropyl betaine, 10-20% of alkylamine polyoxyethylene ammonium nitrate and the balance of water.
2. A glufosinate solution containing the glufosinate auxiliary of claim 1 comprises the following components in percentage by weight: 50% of glufosinate-ammonium raw powder, 10-20% of an auxiliary agent and the balance of water.
3. The glufosinate-ammonium water aqua containing the glufosinate-ammonium assistant according to claim 2, comprises the following components in percentage by weight: 50% of glufosinate-ammonium raw powder, 15% of an auxiliary agent and the balance of water.
4. A process for preparing an aqueous glufosinate formulation comprising a glufosinate adjuvant according to claim 2 or 3, wherein the process comprises the steps of:
(1) preparing alkylamine polyoxyethylene ammonium nitrate;
(2) mixing the alkylamine polyoxyethylene ammonium nitrate obtained in the step (1) with fatty alcohol-polyoxyethylene ether, alkyl glycoside, cocamidopropyl betaine and water in proportion, and then uniformly stirring to obtain an auxiliary agent;
(3) and (3) mixing the auxiliary agent obtained in the step (2) with the glufosinate-ammonium raw powder and water in a ratio and uniformly stirring to obtain the glufosinate-ammonium aqua containing the glufosinate-ammonium auxiliary agent.
5. The preparation method according to claim 4, wherein the alkylamine polyoxyethylene ammonium nitrate in the step (1) is prepared according to the following steps:
a. adding alkylamine polyoxyethylene ether, dimethyl carbonate and a solvent into a sealed reaction kettle, replacing air in the kettle with nitrogen, carrying out quaternization reaction under the stirring condition, cooling to 50-60 ℃ after the reaction is finished, and removing excessive dimethyl carbonate and the solvent under reduced pressure to obtain methyl carbonate quaternary ammonium salt;
b. HNO is added into the obtained methyl carbonate quaternary ammonium salt3Neutralizing, and removing by-product CO under reduced pressure2And reacting with the solvent to obtain alkylamine polyoxyethylene ammonium nitrate.
6. The preparation method of claim 5, wherein the molar ratio of the alkylamine polyoxyethylene ether to dimethyl carbonate in the step a is 1:1 is added; the solvent is methanol, and the mass of the solvent accounts for 40% of the mass of the reaction product.
7. The preparation method according to claim 5, wherein the quaternization reaction conditions in the step a are as follows: the temperature is 40-60 ℃, and the time is 2-6 h.
8. The preparation method according to claim 5, wherein the methyl carbonate quaternary ammonium salt is reacted with HNO in the step b3Mixed in a molar ratio of 1: 1.
9. The preparation method according to claim 4, wherein the alkylamine polyoxyethylene ammonium nitrate in the step (2) is mixed with the fatty alcohol polyoxyethylene ether, the alkyl glycoside, the cocamidopropyl betaine and the water according to the weight percentage of (10-20): 10-15: (15-20): 30-55.
10. The production method according to claim 4, wherein the auxiliary, the glufosinate-ammonium raw powder and the water in the step (3) are mixed in an amount of 1.5:5:3.5 by weight percent.
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| CN106212453A (en) * | 2016-07-05 | 2016-12-14 | 南京科翼新材料有限公司 | A kind of glufosinate-ammoniumaqua aqua builder containing trimethylamino acid |
| CN108402040A (en) * | 2018-04-12 | 2018-08-17 | 南京科翼新材料有限公司 | A kind of auxiliary agent suitable for glufosinate-ammonium sylvine aqua |
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Application publication date: 20200915 |