CN115363037B - Tolfenpyrad and fenoxycarb insecticide as well as preparation method and application thereof - Google Patents

Tolfenpyrad and fenoxycarb insecticide as well as preparation method and application thereof Download PDF

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CN115363037B
CN115363037B CN202111312478.4A CN202111312478A CN115363037B CN 115363037 B CN115363037 B CN 115363037B CN 202111312478 A CN202111312478 A CN 202111312478A CN 115363037 B CN115363037 B CN 115363037B
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fenoxycarb
agent
tolfenpyrad
polyoxyethylene ether
insecticide
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CN115363037A (en
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曹会刚
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Henan Xifunong Biological Technology Co ltd
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Henan Xifunong Biological Technology Co ltd
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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
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
    • A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
    • 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
    • A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
    • A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
    • A01N47/10—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof
    • A01N47/12—Carbamic acid derivatives, i.e. containing the group —O—CO—N<; Thio analogues thereof containing a —O—CO—N< group, or a thio analogue thereof, neither directly attached to a ring nor the nitrogen atom being a member of a heterocyclic ring
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

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  • Life Sciences & Earth Sciences (AREA)
  • 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)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Toxicology (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

The invention belongs to the field of A01N51/00 of IPC classification, and discloses a tolfenpyrad and fenoxycarb insecticide, a preparation method and application thereof, wherein the raw materials of the insecticide at least comprise active ingredients and auxiliary agents; the active ingredients are tolfenpyrad and fenoxycarb. The pesticide prepared by the application has good pest control effect, effectively improves the stability of the pesticide in a high-low temperature environment, has good storage performance, is suitable for popularization in the pesticide field, and has wide development prospect.

Description

Tolfenpyrad and fenoxycarb insecticide as well as preparation method and application thereof
Technical Field
The invention relates to the field of A01N51/00 of IPC classification, in particular to tolfenpyrad and fenoxycarb insecticide, and a preparation method and application thereof.
Background
With the continuous progress of society and the continuous development of economy, the population of the earth has shown a tendency to rise rapidly as a whole within nearly 10 years, which results in rapid population growth in a plurality of regions in a short time, so that the grain pressure in the regions reaches the limit that can be born.
In recent years, especially in equatorial and partly sandy regions, population growth and damage of diseases and insects to crops have resulted in extremely large grain pressures, so how to increase local grain yield has solved the grain pressure problem and has become a serious issue. However, in the above-mentioned areas, the large day and night temperature difference and extreme environmental temperature conditions easily cause the deactivation phenomenon of pesticides and the like, which greatly affects the planting of crops.
The prior art (CN 202010516575.4) provides an antiviral and pest-resistant composition containing hypersensitive proteins, and the raw materials mainly comprise protein active ingredients, amino-oligosaccharide active ingredients and related auxiliary agents, so that the composition has good crop pest-resistant effect and good stability and durability of a storage system. However, the storage effect of the related products in high temperature areas is poor, and the deactivation phenomenon of the active ingredient is easily caused.
Therefore, further development of an insecticide which has excellent high-low stability and storage stability on the basis of good disease and pest resistance is a significant task.
Disclosure of Invention
In order to solve the problems, the first aspect of the invention provides a tolfenpyrad and fenoxycarb insecticide, wherein the raw materials at least comprise active ingredients and auxiliary agents; the active ingredients are tolfenpyrad and fenoxycarb.
As a preferable scheme, the active component accounts for 5-50% of the pesticide by mass.
As a preferable scheme, the active component accounts for 40-45% of the pesticide by mass.
As a preferable scheme, the mass ratio of tolfenpyrad to fenoxycarb is 5-12:2-7.
As a preferable scheme, the mass ratio of tolfenpyrad to fenoxycarb is 6-8:3-4.
As a preferable mode, the average particle diameter of the fenoxycarb is 50-200 nm.
As a preferable mode, the average particle diameter of the fenoxycarb is 60-120 nm.
As a preferable scheme, the dosage form of the insect repellent is any one of water suspending agent, emulsifiable concentrate, water dispersible granule, microcapsule suspending agent, microcapsule suspension-suspending agent, oil suspending agent, ultra-low volume liquid, aqueous emulsion, microemulsion, wettable powder, soluble tablet, soluble granule, powder, granule and seed coating.
As a most preferred embodiment, the dosage form of the insect repellent is an aqueous suspension.
As a preferable scheme, the auxiliary agent is at least one of wetting agent, dispersing agent, surfactant, preservative, antifreezing agent, anti-settling agent, solvent, thickening agent, defoaming agent, stabilizer, filler, solubilizer, antioxidant and emulsifier.
As a most preferred embodiment, the auxiliary agent is an emulsifier, a wetting agent, a surfactant, an antifreezing agent, a solvent, an antifoaming agent, or a thickener.
As a preferable scheme, the antifreezing agent is at least one of glycerol, ethylene glycol, diethylene glycol, polyethylene glycol and sorbitol.
As a preferred embodiment, the antifreeze is glycerol.
As a preferable scheme, the thickening agent is at least one of heteropolysaccharide, hydroxymethyl cellulose, sodium alginate and polyvinyl alcohol.
As a preferred embodiment, the thickener is sodium alginate.
As a preferable scheme, the emulsifier is at least one of polyoxyethylene bisphenol phosphate, polyoxyethylene dodecyl ether phosphate and vinyl ether formaldehyde condensate sulfate.
As a preferable scheme, the emulsifier is bisphenol ethyl phenol phosphate polyoxyethylene ether.
As a preferred embodiment, the solvent is deionized water.
As a preferable scheme, the wetting agent is at least one of fatty alcohol polyoxyethylene ether and fatty alcohol polyoxyethylene ether sulfate.
As a preferable embodiment, the wetting agent is fatty alcohol polyoxyethylene ether.
As a preferable scheme, the hydrophilic-lipophilic balance value of the fatty alcohol-polyoxyethylene ether is 14-17.
In the application, the specific fatty alcohol-polyoxyethylene ether is added to serve as a wetting agent to be compounded with the active ingredient, so that the overall stability of the pesticide is effectively improved, and the curing phenomenon of the active ingredient is effectively prevented. The applicant speculates that: after the fatty alcohol-polyoxyethylene ether with the HLB value of 14-17 is added, the fatty alcohol-polyoxyethylene ether can not only play a role in wetting and dispersing as a wetting agent, but also can effectively improve the interval between active molecules, strengthen the steric hindrance effect, reduce the molecular flocculation phenomenon between the active molecules caused by the winding connection of long polymer chains, further promote the ionization degree of other raw materials in the system and obviously improve the electrostatic repulsive force in the system.
As a preferable scheme, the mass ratio of the fenoxycarb to the fatty alcohol-polyoxyethylene ether is 12-16: 5 to 9.
In the application, the average particle size of the fenoxycarb active ingredient and the mass ratio of the fenoxycarb active ingredient to the fatty alcohol polyoxyethylene ether are limited, so that the permeation effect and the plant absorption effect of the pesticide in use are improved, and meanwhile, the high-temperature storage stability is further improved. The applicant speculates that: when the average grain diameter of the fenoxycarb is in the range of 60-120 nanometers and the mass ratio of the fenoxycarb to the fatty alcohol-polyoxyethylene ether is 12-16: 5-9, the method can effectively generate independent active molecular microcolloids through the synergistic effect of the fatty alcohol-polyoxyethylene ether added into the system, and prevents the phenomenon that smaller colloid is secondarily dissolved and attached to other large colloid through the effect of the fatty alcohol-polyoxyethylene ether; after the formation of dense and stable active molecular microcolloids, the pesticide as a whole forms a stably dispersed nano-dispersion.
As a preferred embodiment, the surfactant is citric acid and dodecyl sulfopropyl betaine.
As a preferable scheme, the mass ratio of the citric acid to the dodecyl sulfopropyl betaine is 2-3:1.
As a preferable scheme, the mass ratio of the surfactant to the fatty alcohol-polyoxyethylene ether is 3-6: 5 to 9.
As a preferable scheme, the mass ratio of the surfactant to the fatty alcohol-polyoxyethylene ether is 4-5: 7-8.
In the application, the citric acid and the dodecyl sulfopropyl betaine are added in a compounding way, so that the dispersibility of the pesticide suspension system is effectively improved in a synergistic way, the problem of the reduction of the overall suspension property of the pesticide caused by the addition of various surfactant active substances is effectively avoided, and the storage suspension rate of the pesticide is enhanced. The applicant speculates that: the addition of the active substances of various surfactants such as citric acid and dodecyl sulfopropyl betaine can obviously promote the surface activity performance of the surfactant and improve the dispersibility, but in a body system, the applicant finds that when the citric acid is added, the water system of the composition presents overall meta-acidity, at the moment, the addition of the dodecyl sulfopropyl betaine presents obvious cationic property in the system, is extremely easy to generate electron neutralization with the citric acid of silver ions, and reduces the overall dispersing and activating effect, but the applicant further finds that when the mass ratio of the citric acid to the dodecyl sulfopropyl betaine is 2-3:1, and the mass ratio of the overall surfactant to the fatty alcohol polyoxyethylene ether is 4-5: and 7-8, at the moment, besides the wetting effect, the fatty alcohol polyoxyethylene ether can also perform peripheral wrapping effect on the dodecyl sulfopropyl betaine when the dodecyl sulfopropyl betaine is added, so that anions and cations in the solvent are blocked, and the phenomenon of electric neutralization is avoided.
As a preferable scheme, the defoaming agent is at least one of a silicone defoaming agent and a polyether defoaming agent.
The second aspect of the invention provides a preparation method of the tolfenpyrad and fenoxycarb insecticide, which comprises the following steps: and (3) placing the required raw materials into a reaction kettle for stirring and mixing, and then shearing at a high speed and ball milling to obtain the finished product.
As a preferred scheme, the preparation method comprises the following steps: (1) Placing an emulsifying agent, a wetting agent, a surfactant, a solvent and a defoaming agent into a reaction kettle, and stirring and mixing; (2) Adding thickener, antifreezing agent and active ingredient under high-speed shearing, ball milling under the condition of ball milling bead addition, and finishing grinding.
The third aspect of the invention provides application of the tolfenpyrad and fenoxycarb insecticide, which comprises application of the insecticide in controlling leafhoppers, thrips, plutella xylostella, flea beetles, asparagus caterpillar, tian Yee, chilo suppressalis, tryporyza incertulas, prodenia litura, bean pod borers, scale insects, aphids and leaf miners.
The beneficial effects are that:
1. in the application of the invention, the tolfenpyrad and the fenoxycarb with specific compounding ratio are added, and the synergistic effect of the tolfenpyrad and the fenoxycarb effectively promotes the insecticidal effect of the insecticide, so that the insecticidal composition can be used for pest control of crop seeds.
2. In the application of the invention, the dispersion and wetting effects of the pesticide are more effectively improved by adding the specific compound surfactant, the problem of reduced overall stability of the pesticide caused by adding various surfactants can be avoided, and the storage suspension rate of the pesticide is enhanced.
3. In the application of the invention, the penetration effect of the pesticide in the using process is effectively improved by the compound addition of the fenoxycarb and other raw materials under the condition of specific fineness, the micelle formation effect of the pesticide in an aqueous medium is further improved, and the suspension property is improved.
Detailed Description
Implementation of the embodimentsExample 1
The first aspect of the embodiment 1 provides a tolfenpyrad and fenoxycarb insecticide, which comprises the following raw materials in percentage by mass: 28% of tolfenpyrad, 12% of fenoxycarb (average particle size of 80 nm), 3% of glycerol, 1.5% of sodium alginate, 4.5% of bisphenethyl phenol phosphate polyoxyethylene ether, 7% of fatty alcohol polyoxyethylene ether (HLB: 14-16), 5% of surfactant (citric acid: dodecyl sulfopropyl betaine=2.5:1), 0.3% of organosilicon defoamer and the balance of deionized water.
In this example, tolfenpyrad is tolfenpyrad sold by Hubei firewood and chemical industry Co.
In this example, the fenoxycarb is a 60-100 nm grade fenoxycarb product sold by Shuangyan chemical industry Co., ltd.
In the embodiment, the bisphenol ethyl phenol phosphate polyoxyethylene ether is a bisphenol ethyl phenol phosphate polyoxyethylene ether product sold by Yiyi national force chemical industry Co.
In this example, the fatty alcohol-polyoxyethylene ether is a fatty alcohol-polyoxyethylene ether (HLB: 14-16) product sold by Jiangsu sea An petrochemical company.
In this example, the silicone defoamer was model YT-11 silicone defoamer sold by Jinan Yu Tao chemical Co.
In this embodiment, the insecticide is in the form of an aqueous suspension.
In a second aspect of this embodiment, a method for preparing the tolfenpyrad and fenoxycarb insecticide is provided, including the following steps: (1) Placing the bisphenol ethyl phenol phosphate polyoxyethylene ether, the fatty alcohol polyoxyethylene ether, the surfactant, deionized water and the organosilicon defoamer into a reaction kettle, and stirring and mixing; (2) Adding sodium alginate, glycerol, tolfenpyrad and fenoxycarb under high-speed shearing, ball-milling under the condition of ball-milling beads, and finishing grinding to obtain the finished product.
Example 2
The specific implementation of this example is the same as example 1, except that: the content of tolfenpyrad is 32% and the content of fenoxycarb is 16%.
Comparative example 1
The specific embodiment of this comparative example is the same as example 1, except that: the average particle size of the fenoxycarb was 0.3 microns.
In this example, the fenoxycarb is a fenoxycarb product sold by Hubei Sunpro chemical Co.
Comparative example 2
The specific embodiment of this comparative example is the same as example 1, except that: the content of fenoxycarb is 6%.
Comparative example 3
The specific embodiment of this comparative example is the same as example 1, except that: the content of the surfactant is 8%, and the content of the fatty alcohol-polyoxyethylene ether is 2%.
Evaluation of Performance
1. Low temperature stability: the insecticide prepared in all examples and comparative examples was subjected to a low temperature stability test with reference to the standard of GB/T19137-2003, and the appearance change of the sample was observed for 3 hours, and the measured results are reported in Table 1.
2. Low temperature wet screen: the pesticides prepared in all examples and comparative examples were subjected to a low temperature wet sieve test, the pesticides prepared in all examples were stored at 0.+ -. 2 ℃ for 14d, and after 14d, the pesticides were taken out and returned to room temperature, the samples were filtered through a 20 μm filter screen, the sieving rate was tested, 5 samples were tested in each example, and the average of the values obtained was reported in Table 1.
3. Thermal storage stability: the heat storage stability test was carried out on all the insecticides prepared in examples and comparative examples with reference to the standard of GB/T19136-2003, the suspension rate of the last insecticide was observed and the measured results are reported in Table 1.
TABLE 1
As can be seen from examples 1-2, comparative examples 1-3 and Table 1, the tolfenpyrad and fenoxycarb insecticide provided by the invention has good pest control effect, effectively improves the stability of the insecticide in high and low temperature environments, has good storage performance, is suitable for popularization in the pesticide field, and has wide development prospect. Wherein example 1 obtained the best performance index under the factors of the best preparation raw material proportion and preparation process.

Claims (3)

1. The tolfenpyrad and fenoxycarb insecticide is characterized in that: the raw materials at least comprise active ingredients and auxiliary agents; the active ingredients are tolfenpyrad and fenoxycarb;
the dosage form of the insect-resistant agent is an aqueous suspension agent;
the mass percentage of the active component in the pesticide is 40-50%;
the mass ratio of tolfenpyrad to fenoxycarb is 6-8:3-4;
the average particle size of the fenoxycarb is 60-120 nm;
the auxiliary agent is an emulsifying agent, a wetting agent, a surfactant, an antifreezing agent, a solvent, a defoaming agent and a thickening agent;
the wetting agent is fatty alcohol polyoxyethylene ether;
the hydrophilic-lipophilic balance value of the fatty alcohol-polyoxyethylene ether is 14-17;
the thickening agent is sodium alginate;
the emulsifier is bisphenol ethyl phenol phosphate polyoxyethylene ether;
the surfactant is citric acid and dodecyl sulfopropyl betaine; the mass ratio of the citric acid to the dodecyl sulfopropyl betaine is 2-3:1;
the mass ratio of the surfactant to the fatty alcohol-polyoxyethylene ether is 4-5: 7-8;
the mass ratio of the fenoxycarb to the fatty alcohol-polyoxyethylene ether is 12-16: 5-9.
2. The tolfenpyrad and fenoxycarb insecticide according to claim 1, characterized in that: the antifreezing agent is at least one of glycerol, ethylene glycol, diethylene glycol, polyethylene glycol and sorbitol.
3. A method for preparing tolfenpyrad and fenoxycarb insecticide according to any one of claims 1-2, characterized in that: the preparation method comprises the following steps: (1) Placing an emulsifying agent, a wetting agent, a surfactant, a solvent and a defoaming agent into a reaction kettle, and stirring and mixing; (2) Adding thickener, antifreezing agent and active ingredient under high-speed shearing, ball milling under the condition of ball milling bead addition, and finishing grinding.
CN202111312478.4A 2021-11-08 2021-11-08 Tolfenpyrad and fenoxycarb insecticide as well as preparation method and application thereof Active CN115363037B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102630677A (en) * 2012-04-01 2012-08-15 广西田园生化股份有限公司 Tolfenpyrad-containing ultra-low volume liquid
CN103283741A (en) * 2012-03-03 2013-09-11 陕西韦尔奇作物保护有限公司 Tolfenpyrad-containing pesticidal composition
CN105154102A (en) * 2015-09-07 2015-12-16 龚灿锋 Pesticide for forest and agriculture soil remediation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103283741A (en) * 2012-03-03 2013-09-11 陕西韦尔奇作物保护有限公司 Tolfenpyrad-containing pesticidal composition
CN102630677A (en) * 2012-04-01 2012-08-15 广西田园生化股份有限公司 Tolfenpyrad-containing ultra-low volume liquid
CN105154102A (en) * 2015-09-07 2015-12-16 龚灿锋 Pesticide for forest and agriculture soil remediation

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