CN114246179A - Auxiliary agent suitable for microemulsion of high-salt system - Google Patents
Auxiliary agent suitable for microemulsion of high-salt system Download PDFInfo
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- CN114246179A CN114246179A CN202111613295.6A CN202111613295A CN114246179A CN 114246179 A CN114246179 A CN 114246179A CN 202111613295 A CN202111613295 A CN 202111613295A CN 114246179 A CN114246179 A CN 114246179A
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- Prior art keywords
- microemulsion
- glufosinate
- adjuvant
- betaine
- salt system
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Classifications
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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
-
- 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
- A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
- A01N33/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds containing nitrogen-to-oxygen bonds
- A01N33/18—Nitro compounds
- A01N33/20—Nitro compounds containing oxygen or sulfur attached to the carbon skeleton containing the nitro group
- A01N33/22—Nitro compounds containing oxygen or sulfur attached to the carbon skeleton containing the nitro group having at least one oxygen or sulfur atom and at least one nitro group directly attached to the same aromatic ring system
-
- 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
Abstract
Discloses an adjuvant of pesticide microemulsion, belonging to the field of agricultural surfactant, the adjuvant can be applied to microemulsion of high salt system, especially microemulsion of high salt system containing glyphosate isopropylamine salt or glufosinate, can solve the problem of crystal precipitation in microemulsion of high salt system, and can obviously improve cloud point of microemulsion; and the effective components in the adjuvant also have a certain synergistic effect on glyphosate and glufosinate-ammonium. The auxiliary agent mainly comprises betaine amphoteric surfactant and phosphate emulsifier, and the content of each substance is calculated by mass percent as follows: 50-80% of betaine amphoteric surfactant and 20-50% of phosphate emulsifier.
Description
Technical Field
The invention belongs to the field of agricultural surfactants, and particularly relates to an auxiliary agent suitable for a high-salt system microemulsion.
Background
The pesticide Microemulsion (ME) is a single-phase flowing dispersion system which is formed by water and pesticide liquid which is not dissolved in the water under the action of a surfactant and has isotropy, thermodynamic stability, transparent or semitransparent appearance. The water partially replaces the organic solvent, saves a large amount of organic solvent, greatly lightens the pressure on the environment, and is one of new formulations for replacing missible oil. However, when salt ions are dissolved in water, the adsorption of the surfactant on an oil-water interface is seriously affected by a high-salt system, and the preparation of the stable microemulsion is difficult under the condition.
Glyphosate isopropylamine salt and glufosinate are currently main agents for controlling biocidal weeds, and the main dosage forms at the present stage are all monomer aqueous solutions, but the control effect is gradually reduced along with the improvement of weed resistance. In order to improve the control effect, glyphosate, glufosinate and other agents are more and more registered, but because the two herbicides are easily dissolved in water to form a high-salt water phase, and the other raw pesticide is insoluble in water, a stable water-based preparation product is difficult to prepare, and the glyphosate and glufosinate compound preparation in the market at the present stage is mainly an oil suspending agent, so that the preparation cost is greatly increased. If glyphosate isopropylamine salt or glufosinate can be dissolved in water to serve as a water phase, and the other compound raw drug is dissolved in a solvent to serve as an oil phase, the microemulsion can be prepared under the action of the surfactant, and the production cost can be greatly reduced. However, the glyphosate or glufosinate-ammonium compounded microemulsion has not been developed vigorously, mainly because the system belongs to a high-salt system, and because ions have electric charges, unstable thermal movement between the ions is caused, and the difficulty of preparing the microemulsion by compounding the glyphosate or glufosinate-ammonium.
Betaine is the main type of amphoteric surfactant, and because its structure has both anionic and cationic groups, it is not easily affected by inorganic electrolyte, and has no cloud point phenomenon, and no hydrophobic surface is formed no matter adsorbed to positive charge or negative charge interface. The characteristics make the surfactant have better performance than other surfactants in many fields, such as excellent hard water resistance, low toxicity, excellent synergistic effect, good antistatic property, mildew resistance, sterilization, corrosion resistance, easy biodegradation, low irritation, good surface activity in a wider pH range, good compounding performance with other types of surfactants and the like. A large number of experiments prove that the betaine amphoteric surfactant can form a stable microemulsion system under a high-salt system by being compounded with a phosphate emulsifier, the water phase contains urea, sodium salt, potassium salt, humic acid and the like, or contains glyphosate, glufosinate and the like which are easily dissolved in water, and the qualified microemulsion can be prepared by fine adjustment of the formula. Moreover, researches find that the betaine surfactant has an emulsifying effect and is also a synergist of glyphosate and glufosinate-ammonium. The microemulsion is an emulsifier and a synergist in the whole microemulsion system, and has wide application prospect.
Disclosure of Invention
The invention provides an auxiliary agent of microemulsion under a high-salt system, which contains betaine amphoteric surfactant and phosphated emulsifier, and can be applied to the microemulsion of the high-salt system, in particular to the microemulsion of the high-salt system containing glyphosate isopropylamine salt or glufosinate, thereby obviously solving the problem of crystal precipitation in the microemulsion and obviously improving the cloud point of the microemulsion, and the effective components in the auxiliary agent also have certain synergistic action on the glyphosate and the glufosinate.
In order to achieve the purpose, the invention adopts the following technical scheme:
the auxiliary agent of the microemulsion suitable for the high-salt system consists of betaine amphoteric surfactant and phosphated emulsifier, and the contents of the substances are calculated by mass percent:
the betaine amphoteric surfactant is 50-80%
20-50% of phosphated emulsifier
Wherein the betaine amphoteric surfactant can be one or more of lauramidopropyl betaine, lauramidopropyl hydroxysulfobetaine, cocamidopropyl betaine, cocamidopropyl hydroxysulfobetaine, dodecyl betaine, and dodecyl dimethyl betaine.
Wherein the phosphated emulsifier can be alkylphenol polyoxyethylene ether phosphate (such as NP-7P, NP-10P), phenethylphenol polyoxyethylene ether phosphate (such as 601P, 602P, 1601P), fatty alcohol polyoxyethylene ether phosphate (such as AEO-3P, AEO-7P, AEO-9P)
The auxiliary agent is mainly suitable for the microemulsion of a high-salt system, the water phase contains urea, sodium salt, potassium salt, humic acid and the like, or contains glyphosate, glufosinate and the like which are easily dissolved in water, and the qualified microemulsion can be prepared by fine adjustment of the formula. The adding amount is 5-30% by mass, preferably 8-20% by mass when in use.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following examples are provided to further illustrate the present invention, wherein the percentage contents are as follows:
example 1:
microemulsion of 2.8% oxyfluorfen and 14.2% glufosinate-ammonium
The formula is as follows:
dissolving the glufosinate technical in the amount in water to be supplemented to serve as a water phase, and dissolving the oxyfluorfen technical in the amount in cyclohexanone to serve as an oil phase. Adding emulsifier lauramidopropyl betaine, cocamidopropyl betaine and phenethyl phenol polyoxyethylene ether phosphate into oil phase system, adding water phase while stirring, and stirring for 5-10 min. The system is in a clear and transparent state, namely 2.8 percent oxyfluorfen and 14.2 percent glufosinate-ammonium microemulsion. The microemulsion prepared by the emulsifier can keep a transparent state after cold and hot storage, can effectively inhibit the precipitation of raw medicines, has a cloud point of more than 80 ℃, and meets various standards.
Example 2:
microemulsion of 1% fluoroglycofen-ethyl and 14% glufosinate-ammonium
The formula is as follows:
dissolving the glufosinate ammonium raw drug with the content in water which needs to be supplemented to serve as a water phase, and dissolving the fluoroglycofen-ethyl raw drug with the content in cyclohexanone to serve as an oil phase. Adding emulsifier lauramide propyl betaine and phenethyl phenol polyoxyethylene ether phosphate into the oil phase system, adding the water phase while stirring, and stirring for 5-10 min. The system is in a clear and transparent state, namely 1% fluoroglycofen-ethyl and 14% glufosinate-ammonium microemulsion. The microemulsion prepared by the emulsifier can keep a transparent state after cold and hot storage, can effectively inhibit the precipitation of raw medicines, has a cloud point of more than 80 ℃, and meets various standards.
Example 3:
microemulsion of 1% fluoroglycofen-ethyl and 19% glufosinate-ammonium
The formula is as follows:
dissolving the glufosinate ammonium raw drug with the content in water which needs to be supplemented to serve as a water phase, and dissolving the fluoroglycofen-ethyl raw drug with the content in cyclohexanone to serve as an oil phase. Adding emulsifier lauramide propyl betaine and phenethyl phenol polyoxyethylene ether phosphate into the oil phase system, adding the water phase while stirring, and stirring for 5-10 min. The system is in a clear and transparent state, namely 1% fluoroglycofen-ethyl and 19% glufosinate-ammonium microemulsion. The microemulsion prepared by the emulsifier can keep a transparent state after cold and hot storage, can effectively inhibit the precipitation of raw medicines, has a cloud point of more than 80 ℃, and meets various standards.
Example 4:
microemulsion of 1% fluoroglycofen-ethyl and 30% glyphosate
The formula is as follows:
dissolving the glyphosate technical material in the amount in water to be complemented as a water phase, and dissolving the fluoroglycofen-ethyl technical material in the amount in cyclohexanone as an oil phase. Adding emulsifier cocamidopropyl betaine and fatty alcohol polyoxyethylene ether phosphate into the oil phase system, adding the water phase while stirring, and stirring for 5-10 min. The system is in a clear and transparent state, and is microemulsion of 1% fluoroglycofen-ethyl and 30% glyphosate. The microemulsion prepared by the emulsifier can keep a transparent state after cold and hot storage, can effectively inhibit the precipitation of raw medicines, has a cloud point of more than 80 ℃, and meets various standards.
Example 5:
microemulsion of 3% oxyfluorfen and 37% glyphosate
The formula is as follows:
dissolving glyphosate isopropylamine raw drug with the content in water needing to be supplemented to serve as a water phase, and dissolving oxyfluorfen raw drug with the content in cyclohexanone to serve as an oil phase. Adding emulsifier lauramidopropyl betaine, cocamidopropyl betaine and fatty alcohol polyoxyethylene ether phosphate into oil phase system, adding water phase while stirring, and stirring for 5-10 min. The system is in a clear and transparent state, namely 2.8 percent oxyfluorfen and 14.2 percent glufosinate-ammonium microemulsion. The microemulsion prepared by the emulsifier can keep a transparent state after cold and hot storage, can effectively inhibit the precipitation of raw medicines, has a cloud point of more than 80 ℃, and meets various standards.
Test of field drug effect
Evaluating the drug effect of the microemulsion:
in order to verify the efficacy of the microemulsion herbicide prepared by the aid, 1% fluoroglycofen-ethyl and 19% glufosinate microemulsion is selected as an evaluation object, and a control experiment is carried out by using a mixed preparation of 1% fluoroglycofen-ethyl and 19% glufosinate oil suspending agent, 10% fluoroglycofen-ethyl missible oil and 18% glufosinate aqueous solution (9:95)
Basic conditions of the test field:
the test is carried out in 5 months in 2017 in a model town of a Taishan area, Taian City, Shandong province, the selected test area does not use any herbicide in nearly 3 years, the weed species are rich, the growth is more vigorous, and the distribution is more uniform. The main weeds in the test field comprise eleusine indica, digitaria sanguinalis, arthroncus, amaranthus retroflexus, reed, horseweed herb, alopecurus, quinoa, wild oat, green bristlegrass, shepherd's purse and purslane, and also comprise a small amount of sparrow and scandent hop. Most weeds in the test area are in normal growth, and the plant height is 20-40 cm.
The test method comprises the following steps:
the experiment was carried out in 4 treatments, each treatment being repeated 4 times, each treatment zone having an area of 25m2The processing regions are arranged randomly. The first three treatment agents are 20 percent glufosinate-ethyl-carboxyl microemulsion, 20 percent glufosinate-ethyl-carboxyl oil suspending agent, 10 percent fluoroglycofen-ethyl missible oil and 18 percent glufosinate-ammonium aqueous solution (9:95) mixed preparation, and the dosage of the preparation is 600g/667m2(active ingredient is 1800 g/hm)2) Treatment 4 is a clear water control test.
The investigation and statistical method comprises the following steps:
the weed base is investigated before spraying, 4 points are selected in each plot, the selected points have to be complete and representative in weed species, and then the selected points are marked. After the application, the poisoning and death of the applied weeds are recorded in detail, the weed species and the number of plants are investigated at 4d, 7d and 25d, the fresh weight of the weeds is weighed at 25d, and the plant control effect and the fresh weight control effect are calculated respectively.
The control effect is [ the number of the weed plants in the control area (or fresh weight) ]/the number of the weed plants in the control area (or fresh weight) × 100%
TABLE 1 Effect of three kinds of chemical agents on various non-cultivated land weed plants
Table 1 shows that the control effects of the three types of medicaments at 4d, 7d and 25d after application are not different greatly under the condition of the same dosage, and the control effect of the 20 percent glufosinate-ethylcarboxyl microemulsion is better than that of a mixed preparation of 10 percent fluoroglycofen emulsifiable concentrate and 18 percent glufosinate aqua (9:95), which also proves that the auxiliary agent can be used for preparing the stable glufosinate microemulsion and has a certain synergistic effect on weed control.
At 25 days after the application, the weeds in the control area and the treatment area are subjected to fresh weight weighing, the results are shown in table 2, and the fresh weight control effect and the plant control effect result of the weeds in the non-cultivated land are consistent and have no great difference.
20 percent of glufosinate-ethylcarboxyl microemulsion has fresh weight control effect on various uncultivated land weeds (25 d after pesticide application)
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (6)
1. The application of betaine amphoteric surfactant in high-salt microemulsion, especially the microemulsion containing glyphosate isopropylamine salt or glufosinate-ammonium is disclosed.
2. The high-salt system microemulsion auxiliary agent is characterized in that the high-salt system microemulsion auxiliary agent comprises the following material components in percentage by mass:
the betaine amphoteric surfactant is 50-80%
20-50% of phosphated emulsifier.
3. The adjuvant for microemulsion of high salt system according to claim 2, wherein the betaine amphoteric surfactant is one or more selected from lauramidopropyl betaine, lauramidopropyl hydroxysultaine, cocamidopropyl betaine, cocamidopropyl hydroxysultaine, dodecyl betaine, and dodecyl dimethyl betaine.
4. The adjuvant for microemulsion according to claim 2, wherein the phosphated emulsifier is one or more of alkylphenol ethoxylate phosphate, phenethyl phenol ethoxylate phosphate, and fatty alcohol ethoxylate phosphate.
5. The adjuvant for microemulsion of high salt system as claimed in claim 1 or 2, wherein the adjuvant is added in an amount of 5-30% by mass when in use.
6. The adjuvant for microemulsion of high salt system as claimed in claim 1 or 2, wherein the adjuvant is added in an amount of 8-20% by mass when in use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111613295.6A CN114246179A (en) | 2021-12-27 | 2021-12-27 | Auxiliary agent suitable for microemulsion of high-salt system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111613295.6A CN114246179A (en) | 2021-12-27 | 2021-12-27 | Auxiliary agent suitable for microemulsion of high-salt system |
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| Publication Number | Publication Date |
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| CN114246179A true CN114246179A (en) | 2022-03-29 |
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| CN202111613295.6A Withdrawn CN114246179A (en) | 2021-12-27 | 2021-12-27 | Auxiliary agent suitable for microemulsion of high-salt system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115918648A (en) * | 2022-12-21 | 2023-04-07 | 上海悦联生物科技有限公司 | Microemulsion for efficiently weeding and preparation method thereof |
| WO2023239303A1 (en) * | 2022-06-07 | 2023-12-14 | Hydroemission Corporation Pte. Ltd. | Plant treatment compositions and preparation thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001026463A1 (en) * | 1999-10-13 | 2001-04-19 | Nufarm Limited | Adjuvant for a herbicidal composition |
| US20070155628A1 (en) * | 2005-11-14 | 2007-07-05 | Rajesh Pazhianur | Agricultural adjuvant compostions, pesticide compositions, and methods for using such compositions |
| CN103168798A (en) * | 2012-10-30 | 2013-06-26 | 肇庆市真格生物科技有限公司 | Weedicide composition and preparation method thereof |
| CN106070305A (en) * | 2016-06-08 | 2016-11-09 | 济南绿霸农药有限公司 | A kind of Herbicidal combinations of Glufosinate-ammoniumpesticideng and fluoroglycofen-ethyl and preparation method thereof |
| CN107156171A (en) * | 2017-07-04 | 2017-09-15 | 广东省农业科学院植物保护研究所 | A kind of microemulsion containing glufosinate-ammonium and fluoroglycofen-ethyl |
| CN108935506A (en) * | 2018-07-16 | 2018-12-07 | 广东中迅农科股份有限公司 | Synergistic herbicide compositions containing glufosinate-ammonium |
| CN112385653A (en) * | 2019-08-16 | 2021-02-23 | 南京科翼新材料有限公司 | Emulsifier suitable for glufosinate-fluoroglycofen-ethyl microemulsion and application method thereof |
-
2021
- 2021-12-27 CN CN202111613295.6A patent/CN114246179A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001026463A1 (en) * | 1999-10-13 | 2001-04-19 | Nufarm Limited | Adjuvant for a herbicidal composition |
| US20070155628A1 (en) * | 2005-11-14 | 2007-07-05 | Rajesh Pazhianur | Agricultural adjuvant compostions, pesticide compositions, and methods for using such compositions |
| CN103168798A (en) * | 2012-10-30 | 2013-06-26 | 肇庆市真格生物科技有限公司 | Weedicide composition and preparation method thereof |
| CN106070305A (en) * | 2016-06-08 | 2016-11-09 | 济南绿霸农药有限公司 | A kind of Herbicidal combinations of Glufosinate-ammoniumpesticideng and fluoroglycofen-ethyl and preparation method thereof |
| CN107156171A (en) * | 2017-07-04 | 2017-09-15 | 广东省农业科学院植物保护研究所 | A kind of microemulsion containing glufosinate-ammonium and fluoroglycofen-ethyl |
| CN108935506A (en) * | 2018-07-16 | 2018-12-07 | 广东中迅农科股份有限公司 | Synergistic herbicide compositions containing glufosinate-ammonium |
| CN112385653A (en) * | 2019-08-16 | 2021-02-23 | 南京科翼新材料有限公司 | Emulsifier suitable for glufosinate-fluoroglycofen-ethyl microemulsion and application method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023239303A1 (en) * | 2022-06-07 | 2023-12-14 | Hydroemission Corporation Pte. Ltd. | Plant treatment compositions and preparation thereof |
| CN115918648A (en) * | 2022-12-21 | 2023-04-07 | 上海悦联生物科技有限公司 | Microemulsion for efficiently weeding and preparation method thereof |
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