CN111134134A - High-stability 40% dimethoate emulsifiable concentrate and preparation method thereof - Google Patents
High-stability 40% dimethoate emulsifiable concentrate and preparation method thereof Download PDFInfo
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- CN111134134A CN111134134A CN201911393636.6A CN201911393636A CN111134134A CN 111134134 A CN111134134 A CN 111134134A CN 201911393636 A CN201911393636 A CN 201911393636A CN 111134134 A CN111134134 A CN 111134134A
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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
- A01N57/10—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
- A01N57/12—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds containing acyclic or cycloaliphatic radicals
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/22—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing ingredients stabilising the active ingredients
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Toxicology (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses high-stability 40% dimethoate missible oil, which relates to the technical field of pesticides and comprises 100 parts of 96% dimethoate raw powder, 13 parts of emulsifier, 55 parts of solvent, 27 parts of cosolvent and 49 parts of enhanced stabilizer, wherein the enhanced stabilizer comprises at least two of octyl phenol polyether, sec-octyl phenol polyphosphate, sodium dodecyl sulfate and sodium dodecyl sulfate. The enhanced stabilizer is added on the basis of the existing formula, so that the stability of the existing 40% dimethoate missible oil is improved, the decomposition of the dimethoate missible oil in the storage process is reduced, and the drug property of the dimethoate missible oil is improved.
Description
Technical Field
The invention relates to the technical field of pesticides, in particular to high-stability 40% dimethoate emulsifiable concentrate and a preparation method thereof.
Background
In the production and sale of agricultural chemicals in the world, the organophosphorus agricultural chemicals occupy the leading position, the yield accounts for more than half of the total yield of the agricultural chemicals, while the quality of domestic organophosphorus agricultural chemicals, no matter raw materials, intermediates and products, is poorer, and most of the quality of raw materials has larger difference compared with the products in developed countries, thereby affecting the export quantity and greatly lowering the price of the products in developed countries. Dimethoate, a pesticide, is a pure white needle-packed crystal, has the solubility of 39 g/L (room temperature) in water, is easy to be absorbed by plants and transported to the whole plant, is relatively stable in an acid solution, is rapidly hydrolyzed in an alkaline solution, and is one of varieties with wide final application and large yield in absorbing pesticides in organophosphorus.
The main formulation of dimethoate is missible oil, one is 40% EC, the other is 50% EC, and a plurality of mixed preparations are available, such as: dimethoate + cypermethrin, dimethoate + endosulfan, dimethoate + chlorpyrifos, dimethoate + fenvalerate, dimethoate + deltamethrin, dimethoate + phenthoate and the like. Dimethoate is a strongly polar compound and therefore has poor stability.
Disclosure of Invention
In order to solve the technical problems, the invention provides high-stability 40% dimethoate missible oil which comprises 100 parts of 96% dimethoate raw powder, 13 parts of an emulsifier, 55 parts of a solvent, 27 parts of a cosolvent and 49 parts of an enhanced stabilizer, wherein the enhanced stabilizer comprises at least two of octyl phenol polyether, sec-octyl phenol polyphosphate, sodium dodecyl sulfate and sodium dodecyl sulfate.
The technical effects are as follows: the enhanced stabilizer is added on the basis of the existing formula, so that the stability of the existing 40% dimethoate missible oil is improved, the decomposition of the dimethoate missible oil in the storage process is reduced, and the drug property of the dimethoate missible oil is improved.
The technical scheme of the invention is further defined as follows:
the emulsifier of the high-stability 40% dimethoate emulsifiable solution comprises Nongru 600+ Nongru 500, Ningru 33+ Ningru 700+ Ningru 37, Nongru 0203B + Nongru 0204C.
The high-stability 40% dimethoate emulsifiable concentrate comprises a solvent selected from Solvesso-100, Solvesso-150 and Solvesso-200.
The high-stability 40% dimethoate emulsifiable concentrate adopts an organic silicon polyoxyethylene ether compound as a cosolvent.
The high-stability 40% dimethoate missible oil is characterized in that the enhanced stabilizer comprises 19 parts of octyl phenol polyether and 30 parts of sodium dodecyl sulfate.
Another object of the present invention is to provide a method for preparing a high stability 40% dimethoate emulsifiable concentrate, which comprises
S1, adding 96% dimethoate raw powder into a solvent, stirring, heating to 280 ℃ at a heating rate of 15 ℃/min, uniformly mixing, and keeping the temperature for 2-4 hours;
s2, adding the emulsifier, continuously mixing uniformly, and keeping the temperature at 260 ℃ for 2 hours;
s3, adding the cosolvent and the enhanced stabilizer, uniformly mixing, and keeping the temperature at 235 ℃ for 6-8 hours;
s4, cooling to room temperature, standing in the shade for 8-12 hours, and packaging to obtain the finished product.
The preparation method of the high-stability 40% dimethoate missible oil comprises the following steps
S1, adding 100 parts of 96% dimethoate raw powder into 20 parts of Solvesso-100 and 35 parts of Solvesso-150 of solvent, stirring, heating to 280 ℃ at the heating rate of 15 ℃/min, uniformly mixing, and keeping the temperature for 4 hours;
s2, adding 3 parts of Nongru 0203B and 5 parts of Nongru 0204+5 parts of Nongru 0204C, continuously and uniformly mixing, and keeping the temperature at 260 ℃ for 2 hours;
s3, adding 27 parts of organic silicon polyoxyethylene ether compound, 19 parts of octyl phenol polyether and 30 parts of lauryl sodium sulfate, uniformly mixing, and keeping the temperature at 235 ℃ for 7.5 hours;
s4, cooling to room temperature, filtering, standing in the shade for 11 hours, and packaging to obtain the finished product.
The invention has the beneficial effects that:
(1) the enhanced stabilizer added in the invention can obviously improve the stability of the dimethoate missible oil and obstruct the surface activity, when the dimethoate missible oil is decomposed for a period of time, the decomposition product covers the surface, and the contact of the active component and the dimethoate missible oil is obstructed, thereby reducing the decomposition rate;
(2) the emulsifier, the solvent and the enhanced stabilizer are all in a compound dosage form, and the effect is better than that of adding dimethoate missible oil in a single dosage form.
Detailed Description
Example 1
The embodiment provides high-stability 40% dimethoate missible oil and a preparation method thereof, which comprises the following steps of
S1, adding 100 parts of 96% dimethoate raw powder into 20 parts of Solvesso-100 and 35 parts of Solvesso-150 of solvent, stirring, heating to 280 ℃ at the heating rate of 15 ℃/min, uniformly mixing, and keeping the temperature for 4 hours;
s2, adding 3 parts of Nongru 0203B, 5 parts of Nongru 0204 and 5 parts of Nongru 0204C, continuously and uniformly mixing, and keeping the temperature at 260 ℃ for 2 hours;
s3, adding 27 parts of organic silicon polyoxyethylene ether compound, 19 parts of octyl phenol polyether and 30 parts of lauryl sodium sulfate, uniformly mixing, and keeping the temperature at 235 ℃ for 7.5 hours;
s4, cooling to room temperature, filtering, standing in the shade for 11 hours, and packaging to obtain the finished product.
Example 2
The embodiment provides high-stability 40% dimethoate missible oil and a preparation method thereof, which comprises the following steps of
S1, adding 100 parts of 96% dimethoate raw powder into 30 parts of Solvesso-150 and 25 parts of Solvesso-200 of a solvent, stirring, heating to 280 ℃ at a heating rate of 15 ℃/min, uniformly mixing, and keeping the temperature for 3.5 hours;
s2, adding 5 parts of agricultural milk 600 and 8 parts of agricultural milk 500, mixing uniformly, and keeping the temperature at 260 ℃ for 2 hours;
s3, adding 27 parts of organic silicon polyoxyethylene ether compound, 23 parts of sec-octylphenol polyphosphate and 26 parts of lauryl sodium sulfate, uniformly mixing, and keeping the temperature at 235 ℃ for 8 hours;
s4, cooling to room temperature, filtering, standing in the shade for 10 hours, and packaging to obtain the finished product.
Example 3
The embodiment provides high-stability 40% dimethoate missible oil and a preparation method thereof, which comprises the following steps of
S1, adding 100 parts of 96% dimethoate raw powder into 35 parts of Solvesso-100 and 20 parts of Solvesso-200 of a solvent, stirring, heating to 280 ℃ at a heating rate of 15 ℃/min, uniformly mixing, and keeping the temperature for 4 hours;
s2, adding 3 parts of Nongru 0203B, 5 parts of Nongru 0204 and 5 parts of Nongru 0204C, continuously and uniformly mixing, and keeping the temperature at 260 ℃ for 2 hours;
s3, adding 27 parts of organic silicon polyoxyethylene ether compound, 29 parts of sec-octylphenol polyphosphate and 20 parts of sodium dodecyl sulfate, uniformly mixing, and keeping the temperature at 235 ℃ for 6 hours;
s4, cooling to room temperature, filtering, standing in the shade for 12 hours, and packaging to obtain the finished product.
The products of examples 1 to 3 were stored at room temperature and 52 ℃ for 4 hours and 1 day, respectively, and the test results were as follows:
as can be seen from the table above, the enhanced stabilizer is added in the dimethoate emulsifiable concentrate, so that the stability of the existing 40% dimethoate emulsifiable concentrate is improved, the decomposition of the dimethoate emulsifiable concentrate in the storage process is reduced, and the drug property of the dimethoate emulsifiable concentrate is improved.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (7)
1. A high-stability 40% dimethoate missible oil is characterized in that: the environment-friendly dimethoate powder comprises 100 parts of 96% dimethoate raw powder, 13 parts of emulsifier, 55 parts of solvent, 27 parts of cosolvent and 49 parts of enhanced stabilizer, wherein the enhanced stabilizer comprises at least two of octyl phenol polyether, sec-octyl phenol polyphosphate, sodium dodecyl sulfate and sodium dodecyl sulfate.
2. The high stability 40% dimethoate emulsifiable concentrate as claimed in claim 1, wherein: the emulsifier comprises Nongru 600+ Nongru 500, or Nongru 33+ Nongru 700+ Nongru 37, or Nongru 0203B + Nongru 0204C.
3. The high stability 40% dimethoate emulsifiable concentrate as claimed in claim 1, wherein: the solvent comprises any one of Solvesso-100, Solvesso-150 and Solvesso-200.
4. The high stability 40% dimethoate emulsifiable concentrate as claimed in claim 1, wherein: the cosolvent adopts an organic silicon polyoxyethylene ether compound.
5. The high stability 40% dimethoate emulsifiable concentrate as claimed in claim 1, wherein: the enhanced stabilizer comprises 19 parts of octyl phenol polyether and 30 parts of sodium dodecyl sulfate.
6. A process for the preparation of a high stability 40% dimethoate concentrate according to any one of claims 1 to 5, wherein: comprises that
S1, adding 96% dimethoate raw powder into a solvent, stirring, heating to 280 ℃ at a heating rate of 15 ℃/min, uniformly mixing, and keeping the temperature for 2-4 hours;
s2, adding the emulsifier, continuously mixing uniformly, and keeping the temperature at 260 ℃ for 2 hours;
s3, adding the cosolvent and the enhanced stabilizer, uniformly mixing, and keeping the temperature at 235 ℃ for 6-8 hours;
s4, cooling to room temperature, standing in the shade for 8-12 hours, and packaging to obtain the finished product.
7. The method for preparing high-stability 40% dimethoate missible oil according to claim 6, which is characterized by comprising the following steps of: comprises that
S1, adding 100 parts of 96% dimethoate raw powder into 20 parts of Solvesso-100 and 35 parts of Solvesso-150 of solvent, stirring, heating to 280 ℃ at the heating rate of 15 ℃/min, uniformly mixing, and keeping the temperature for 4 hours;
s2, adding 3 parts of Nongru 0203B, 5 parts of Nongru 0204 and 5 parts of Nongru 0204C, continuously and uniformly mixing, and keeping the temperature at 260 ℃ for 2 hours;
s3, adding 27 parts of organic silicon polyoxyethylene ether compound, 19 parts of octyl phenol polyether and 30 parts of lauryl sodium sulfate, uniformly mixing, and keeping the temperature at 235 ℃ for 7.5 hours;
s4, cooling to room temperature, filtering, standing in the shade for 11 hours, and packaging to obtain the finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911393636.6A CN111134134A (en) | 2019-12-30 | 2019-12-30 | High-stability 40% dimethoate emulsifiable concentrate and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911393636.6A CN111134134A (en) | 2019-12-30 | 2019-12-30 | High-stability 40% dimethoate emulsifiable concentrate and preparation method thereof |
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| CN111134134A true CN111134134A (en) | 2020-05-12 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308865A (en) * | 2000-12-25 | 2001-08-22 | 陈华玲 | Synergistic dimethoate emulsifiable concentrate |
| US20150342180A1 (en) * | 2012-02-27 | 2015-12-03 | Huntsman Corporation Australia Pty Limited | Agrochemical Emulsifiable Concentrate Formulation |
| CN105685089A (en) * | 2016-02-19 | 2016-06-22 | 河北岗恩生物科技有限公司 | Omethoate aromatic-free emulsifiable concentrate and preparation method thereof |
| CN107836461A (en) * | 2017-11-24 | 2018-03-27 | 山东农业大学 | Eco-friendly pesticide missible oil |
-
2019
- 2019-12-30 CN CN201911393636.6A patent/CN111134134A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308865A (en) * | 2000-12-25 | 2001-08-22 | 陈华玲 | Synergistic dimethoate emulsifiable concentrate |
| US20150342180A1 (en) * | 2012-02-27 | 2015-12-03 | Huntsman Corporation Australia Pty Limited | Agrochemical Emulsifiable Concentrate Formulation |
| CN105685089A (en) * | 2016-02-19 | 2016-06-22 | 河北岗恩生物科技有限公司 | Omethoate aromatic-free emulsifiable concentrate and preparation method thereof |
| CN107836461A (en) * | 2017-11-24 | 2018-03-27 | 山东农业大学 | Eco-friendly pesticide missible oil |
Non-Patent Citations (3)
| Title |
|---|
| 刘广文: "《现代农药剂型加工技术》", 30 September 2012, 化学工业出版社 * |
| 宋小平等: "《农用化学品生产工艺与技术》", 30 April 2019, 科学技术文献出版社 * |
| 省化工研究所农药二室剂型组: "有机磷干制剂稳定性研究（第二报）――防止1.5％乐果粉剂分解的措施", 《安徽化工》 * |
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Application publication date: 20200512 |