72 results about "Pyrethroid" patented technology

The invention relates to the technical field of compound preparation, in particular to chiral pyrethroid as well as a preparation method and application thereof. The structural general formula of the chiral pyrethroid is shown as a formula I or a formula II. The synthetic method has a wide substrate range, can successfully prepare a single configuration of a pyrethroid product and test the biological activity of the pyrethroid product, is simple and convenient to operate and high in yield, allows an optical pure isomer to reach 85% or more, prepares the pyrethroid product by a one-pot multi-step method, ensures the ee value and yield of the single configuration, and has a wide application prospect. The whole activity of the compound on plutella xylostella and spodoptera frugiperda is shown as 1R-cisgt; rac, cisgt; according to the present invention, the pyrethroid is a pyrethroid product, the 1S-cis is the low-efficiency body or the ineffective body of the pyrethroid product, and has wide application prospects in the academic field and the pesticide industry.

The invention belongs to the technical field of mosquito larva prevention and control, and particularly relates to a mosquito-killing spreading oil agent and a preparation method and application thereof.The mosquito-killing spreading oil agent is composed of nerolidol, eugenol, methyl oleate, surfactants OP-4 and OP-10 and oleic acid, the mass percent of methyl oleate is 85%, the mass percent of a mixed preparation prepared from the surfactants OP-4 and OP-10 according to the mass ratio of 1: 1 is 5%, and the mass percent of oleic acid is 5%. The mosquito larva killing rate of the film spreading oil agent product within 60 minutes is 100%. Under the same condition, the effect of the insecticidal composition is better than that of pyrethrin, and the insecticidal speed is higher. The film spreading oil agent can reduce the chemical pesticide resistance of deet, and also can achieve the effects of environmental protection and efficient killing of mosquito larvae.

The invention belongs to the technical field of agricultural environment protection, discloses an agricultural plant pesticide residue degradation preparation based on laccase, lipase and catalase and a preparation method thereof, and belongs to the technical field of agricultural environment protection. The degradation preparation comprises the following components in percentage by mass: 0.5-3% of laccase, 0.3-2.5% of lipase, 0.2-2% of catalase, 1-5% of a stabilizer, 5-15% of a buffer agent and the balance of water, the stabilizer is one or a combination of more of sodium alginate, chitosan and glycerol, and the buffer agent is one of three buffer solutions of a disodium hydrogen phosphate-sodium dihydrogen phosphate buffer solution. The preparation method comprises the following steps: weighing raw materials, preparing a buffer solution, dissolving a stabilizer, adding enzyme, stirring and mixing, carrying out temperature-controlled reaction, filtering and sterilizing and the like. According to the preparation, through the synergistic effect of the three enzymes, various pesticide residues such as organic phosphorus, organic chlorine and pyrethroids can be efficiently degraded, the stabilizer protects the enzyme activity, the buffering agent maintains the proper pH value, the preparation method is simple and environmentally friendly, and the quality safety of agricultural products can be effectively guaranteed.

The invention discloses a plant-source electric mosquito liquid for cats, which belongs to the field of pet health care and comprises the following components in percentage by mass: 0.1 to 3.0 percent of plant essential oil, 0.02 to 1.0 percent of antioxidant and 96 to 99.88 percent of solvent. According to the invention, the plant essential oil which is safe and harmless to cats and people is adopted to replace pyrethrin which is common in the market and is used as an effective mosquito-repelling component, and the mosquito-repelling component is slowly released by heating, so that the mosquito-repelling effect is ensured, meanwhile, adverse effects on the health of cats are avoided, and the use method is simpler and more convenient.

Disclosed are a pyrethroid compound containing a cyano group and a double bond, a synthesis method therefor and an application thereof. In the synthesis method, t-butyl 3-formyl-2,2-dimethyl-cyclopropanoate and cyanomethyl phosphonate are used as raw materials, undergo Witting-Horner reaction, undergo column chromatography to obtain t-butyl (Z)-3-(2-cyanovinyl)-2,2-dimethyl-cyclopropanoate ester, undergo deprotection to obtain (Z)-3-(2-cyanovinyl)-2,2-dimethyl-cyclopropanoic acid, undergo acyl chlorination reaction to produce (Z)-3-(2-cyanovinyl)-2,2-dimethyl-cyclopropanoyl chloride, and are esterified with corresponding alcohol to obtain the pyrethroid compound. The compound can be used as an insecticide against pests such as mosquitoes, flies, German cockroaches and the like.

The invention belongs to the field of chemistry and chemical engineering, and particularly relates to a novel method for synthesizing quizalofop-p-ethyl. The quizalofop-p-ethyl racemate reacts with a configuration conversion reagent, so that the quizalofop-p-ethyl racemate is efficiently converted into R-configuration quizalofop-p-ethyl. According to the method, the quizalofop-p-ethyl racemate is converted into quizalofop-p-ethyl with high optical purity under the action of the configuration conversion agent, the use of a high-optical-purity intermediate for synthesizing quizalofop-p-ethyl is avoided, so that the raw material cost can be greatly reduced, and meanwhile, for a quizalofop-p-ethyl product with insufficient optical purity, the yield of the quizalofop-p-ethyl is greatly improved. The optical purity can be improved by the method.

The present invention provides a repellent composition for pyrethroid-resistant bedbugs, the composition comprising 3,4-dimethoxybenzaldehyde as an active ingredient. The invention also provides a method for repelling pyrethroid-resistant bedbugs, the method comprising using the compound or the composition containing same, and uses of the compound or the composition containing same for use in repelling pyrethroid-resistant bedbugs.

The application relates to the technical field of fruit and vegetable processing, in particular to pesticide residue removing equipment for fruit and vegetable processing and a use method thereof, which comprises a cleaning frame, the inner side of the cleaning frame is fixedly connected with a cleaning mechanism, and the left and right sides of the top of the cleaning frame are fixedly connected with conveying devices. The pesticide residue on the surface of fruits and vegetables is efficiently removed through the cleaning frame, the cleaning mechanism and the conveying devices. The cleaning effect is obviously improved through the mechanical structure. The rotation of the cleaning roller and the shaking of the discharging inclined plate are matched, the fruits and vegetables are turned at multiple angles during the discharging process, the surfaces of the fruits and vegetables can be fully contacted with the cleaning roller, the surface-attached soil, dust and impurities are effectively removed, meanwhile, the turbulent effect generated by the stirring rod in the cleaning pool accelerates the falling of pesticide residues under the mechanical friction and water flow impact, and the pesticide residues such as pyrethroid on the surface of the fruits and vegetables are deeply removed.

The present invention belongs to the field of aquaculture technology and discloses a compound anthelmintic granule for aquaculture, a preparation method, and an application thereof. The compound anthelmintic granule is prepared from raw materials such as emamectin benzoate, flubendiamide, a surfactant, an antioxidant, a disintegrant, and a filler. The present invention selects emamectin benzoate and flubendiamide as active ingredients to kill crustacean parasites. Currently, there is no oral anthelmintic compounded with these two ingredients as active ingredients for aquaculture. Emamectin benzoate paralyzes the parasites and is metabolized slowly in the body. It is highly toxic to aquatic animals and is not suitable for large-scale or long-term use. Flubendiamide's main mechanism of action is to inhibit chitin synthesis, and although it has a slow onset of action, it is relatively safe for aquatic animals and is particularly effective against parasites resistant to organophosphorus and pyrethroids. Clinical verification has shown that the two compounds synergize and are far more effective in killing crustacean parasites than existing aquatic insecticides.

The application discloses a CTAB modified magnetic waste fungus chaff biochar adsorbent and a preparation method and application thereof in pyrethroid detection. 3+ , Fe 2+ and the fungus chaff biochar, adding an alkaline reagent to carry out a coprecipitation reaction to obtain a magnetic biochar precursor; S3, pyrolyzing the magnetic biochar precursor to obtain a magnetic biochar; S4, adding the magnetic biochar into a cetyltrimethylammonium bromide solution to carry out ultrasonic treatment, and carrying out magnetic separation to obtain an adsorbent MBC-CTAB. The application establishes a pyrethroid analysis method in water samples by taking the MBC-CTAB as the adsorbent, is favorable for utilization of the waste fungus matrix, and adopts a magnet to separate the sample solution and the MBC-CTAB, replaces complicated separation equipment, and realizes convenient and rapid separation.

The invention belongs to the field of mosquito prevention and killing, and particularly relates to a technology for killing mosquitoes by using a safe and non-toxic alkaline which does not contain pyrethroids and phosphorus. The preparation method comprises the following steps: mixing water, glycol stearate, tetrasodium glutamate diacetate, sodium hydroxide, fatty alcohol-polyoxyethylene ether and polydimethylsiloxane to obtain a mixed aqueous solution, standing, and filtering to obtain a final aqueous solution of the mosquito killer. Strict tests prove that the non-pyrethroid alkaline mosquito killer has a very high killing effect on static and flying mosquitoes by spraying an aqueous solution through a spraying can, is environment-friendly, particularly has no pollution to air when being used in a closed space, and is an ideal non-pyrethroid alkaline mosquito killer. The pyrethroid mosquitocide has a good killing effect on various mosquitoes, and another mosquito killing method except the pyrethroid mosquitocide is provided.

The present invention belongs to the technical field of insecticides and the manufacturing thereof, and in particular relates to a composition having a mosquito-repelling effect and a preparation method therefor. The composition is composed of a polyester fabric or non-woven fabric coated with a finishing liquid and a frame for fixing, wherein the finishing liquid comprises the following raw materials: pyrethroid, a co-solvent, an emulsifier, a thickening and stabilizing agent, an antioxidant, an ultraviolet absorber and water, the thickening and stabilizing agent being a mixture of sodium silicate, sodium carboxymethyl cellulose and polyvinylpyrrolidone. Hung in a well-ventilated environment, the composition of the present invention can, without any additional heat source, power supply or wind source, volatilize an insecticide into the air in a stable and long-lasting manner, thereby achieving a mosquito-repelling effect; moreover, the composition has long-lasting efficacy, providing a persistent mosquito-repelling effect for 60-100 days once opened.

The invention belongs to the field of sanitary insecticides, and discloses a safe and environment-friendly insecticide and a preparation method thereof. The insecticide is prepared from the following components in parts by mass: 0.1 to 3 parts of pyrethroid, 0.1 to 2 parts of a synergist, 0.1 to 10 parts of an alkane solvent, 0.5 to 10 parts of fatty alcohol-polyoxyethylene ether, 0.1 to 5 parts of coconut oil diethanolamide, 0.1 to 1 part of ammonium benzoate, 50 to 70 parts of water, 1 to 10 parts of ethanol, 0.1 to 1 part of a de-foaming agent and 10 to 30 parts of tetrafluoroethane. According to the safe and environment-friendly insecticide, the solvent is mainly water, so that the greasy feeling easily left to passengers during use is eliminated; the production cost of water is low, and meanwhile, the dosage of the propellant is reduced, so that the cost is reduced; water is used as a main solvent, so that the risk of combustion after the product is used is reduced. The preparation method of the safe and environment-friendly insecticide, provided by the invention, is carried out through an oil-water two-phase proportioning process and a filling process, so that a large amount of foam is prevented from being generated in a reaction kettle.

This invention belongs to the field of water treatment technology, specifically relating to a method for the catalytic degradation of pesticide residues using nanoenzymes. The method utilizes a nanoenzyme material composed of a transition metal oxide and a carbon-based composite carrier, with a specific surface area of ​​200-500 m². 2 / g, with at least two of the metal elements iron, copper, and cobalt. Adding 0.1-1 g / L nanozyme and 0.1-5 mmol / L H₂O₂ to water degrades organophosphates, pyrethroids, or carbamate pesticides at pH 4-10 and 20-50℃. Material activity and stability are synergistically enhanced. Transition metal oxides form a chemically bonded interface with the carbon-based carrier, increasing the dispersion of active metals to over 85%. The equipment includes a permanent magnet array for nanozyme recovery and a PID temperature control unit. It achieves a degradation rate exceeding 90% in 60 minutes, retains 92% activity after 10 reuses, discharges no iron sludge, and reduces the cost per ton of water to 0.23 yuan.

The present invention relates to a method for controlling creeping pests, in which a control composition containing a pyrethroid compound volatilizes, characterized in that the control composition volatilizes into a space, thereby controlling the creeping pests. The concentration of the pyrethroid compound in the gas in the space is maintained within the range of 1 [mu] g / m3 to 100 [mu] g / m3, and creeping pests are prevented from staying in the space.

The invention discloses an organophosphorus pesticide broad-spectrum nucleic acid aptamer as well as acquisition and application thereof, and belongs to the technical field of food safety biology. According to the method, a common structure of the organophosphorus pesticide is simulated in a computer-aided manner, an initial library is constructed by utilizing a single-base mutation program, and a method which can be used for unbiased screening and can specifically recognize the broad-spectrum aptamer of the organophosphorus pesticide is developed. The obtained broad-spectrum aptamer M622-3 can specifically recognize a variety of organophosphorus pesticides, and has no obvious combination with other types of pesticides such as pyrethroids, carbamates and the like.

The application provides a resistant sanitary pest control composition containing indoxacarb and application thereof, relates to the technical field of resistant sanitary pest control, and more specifically, the resistant sanitary pest control composition is composed of active ingredient A, active ingredient B, a carrier, and adjuvants, wherein the active ingredient A is indoxacarb; the active ingredient B is R-tetrafluorobenzyl cyclopropane carboxylate pyrethroid, compared with the prior art, the application is synergistic through compounding, reduces resistance, improves the control effect on sanitary pests, especially resistant dipteran sanitary pests such as mosquitoes and flies, reduces the drug dosage, reduces the use frequency, and reduces the drug cost.

The present application relates to PxGSTD2 protein mutants, and the use of wild type and mutants of PxGSTD2 protein in catalyzing the conjugated coupling of pesticides with reduced glutathione (GSH) and improving the pesticide tolerance of non-target organisms. The PxGSTD2 protein and its mutants provided by the present application catalyze the conjugated coupling of various types of pesticides such as oxadiazines, neonicotinoids, pyrethroids and the like with GSH, improve the water solubility of the pesticides, reduce the toxicity of the pesticides, form adducts that are easily excreted out of the body by organisms, and thus significantly enhance the tolerance of non-target organisms to pesticides.

The present invention relates to methods for controlling winged insect pests, comprising exposing the pests to an effective amount of a combination of a β-diketone compound and a least one second pesticide selected from a pyrethroid or a pyrethrin, wherein both the β-diketone compound and the at least one second pesticide is used in a sub-effective amount. It also relates to composition for controlling winged insect pests, comprising a β-diketone compound and at least one second pesticide selected from a pyrethroid or a pyrethrin, wherein both of the β-diketone compound and the at the least one pyrethroid or pyrethrin are included in a sub-effective amount.

The invention discloses a method for detecting pyrethroid by using silicon fluoride quantum dots, belongs to the technical field of fluorescence sensing, and designs fluorinated fluorescent silicon quantum dots (FSiQDs) for rapid and visual detection of pyrethroid. The preparation method comprises the following steps: taking fluorophenylhydrazine and N-(beta-aminoethyl)-gamma-aminopropyltrimethoxysilane (DAMO) as raw materials, and reacting at 175-225 DEG C for 4-9 hours to obtain the fluorophenylhydrazine-gamma-aminopropyltrimethoxysilane. Under excitation of 300-400 nm, the fluoro-functionalized silicon quantum dot fluorescent probe emits blue fluorescence (450 nm), fluorescence quenching occurs after the blue fluorescence reacts with pyrethroid hydrolysate 3-phenoxybenzaldehyde (3-PBD), and the quenching rate reaches 75%. The probe has high selectivity and has no interference on common pesticides, metal ions and biomolecules.

The invention provides a silica gel foam sealing material capable of preventing termite gnawing and a preparation method of the silica gel foam sealing material, and belongs to the technical field of polymer sealing materials. The raw material formula of the silica gel foam sealing material is as follows: vinyl silicone oil, a reinforcing filler, a flame-retardant filler, a contact insecticide, a bait, an odorant, a structure control agent, an inhibitor, a platinum catalyst, a foaming agent, hydroxyl silicone oil and hydrogen-containing silicone oil. Wherein the contact insecticide is one or more of pyrethroids, neonicotinoids, phenyl pyrazoles, boric acid, glycine, erythritol and fipronil; the bait agent is one or more of diatomite, talcum powder, capsaicin, dihydrocapsaicin and denatonium benzoate; the odorant is one or more of camphor oil, peppermint oil, limonin, limonene, citral, capraldehyde, octanal and nonanal. The silica gel foam sealing material disclosed by the invention has excellent flame retardant property, mechanical property and ant gnawing resistance, and the integrity of the sealing material can be well protected.

The application discloses a sewage treatment device and method based on membrane filament oxygen supply and electrode synergistic effect of iron redox conversion, the device comprises a reactor, an electrode unit, an oxygen supply membrane unit, an iron base unit, a separation unit and a gas supply system. The oxygen supply membrane and the iron base unit are alternately arranged at a micro distance of 0.5-5 mm to form an iron-oxygen alternating interface; the electrode unit and the oxygen supply membrane unit are separated by the separation unit to form redox subareas. The application utilizes the migration and conversion of iron ions between aerobic and anaerobic zones to construct a non-contact electron transfer path, realizes simultaneous nitrification, denitrification and chemical phosphorus removal; the micro distance iron-oxygen interface can limit the initiation of efficient electro-Fenton reaction to produce hydroxyl radicals and strengthen the degradation of difficult-to-degrade organic matters such as pyrethroid. The application integrates biological denitrification, chemical phosphorus removal, advanced oxidation and biological electricity generation functions, has the advantages of high treatment efficiency, low energy consumption, stable operation and the like, and is especially suitable for treating industrial wastewater containing difficult-to-degrade organic matters.

The invention belongs to the technical field of insecticide byproducts, and provides a byproduct recycling method of a refined pyrethrin product. The recycling method comprises the following steps: (1) collecting by-products; (2) detoxification treatment: performing high-temperature steam treatment on the disintegrating slag, and cooling to obtain pretreated disintegrating slag; mixing the pretreated disintegrating slag with an ethanol water solution, and performing ultrasonic extraction; after the extraction is finished, carrying out solid-liquid centrifugal separation to obtain primarily detoxified residues; mixing the preliminarily detoxified residues with a solution of a compound enzyme, performing enzymolysis, and then filtering to obtain deeply detoxified residues; (3) drying treatment: drying the deeply detoxified residues to obtain pretreated residues; and (4) preparing biomass particles: adding auxiliary materials into the pretreated residues, granulating, cooling and screening to obtain the biomass particles. According to the recycling method, biomass components in the solid residues generated after fine extraction of pyrethrin can be converted into biomass energy, the problem of byproduct treatment can be solved, environmental pollution can be reduced, resource recycling can be achieved, and economic value can be created.

The invention discloses a method for rapidly detecting pesticide residues by using a colloidal gold technology, and belongs to the technical field of pesticide residue detection.The method comprises the steps that an optimized colloidal gold detection card containing a multi-target antibody and modified by Raman signals is prepared, an agricultural product sample is homogenized, extracted, purified and then subjected to gradient dilution, the detection card is dropwise added for a chromogenic reaction, and the pesticide residues are detected. An image is collected through an annular LED cassette, features are extracted through intelligent image processing, and quantitative analysis is carried out in combination with an improved algorithm model. After stability modification, the detection card can simultaneously detect organophosphorus, pyrethroid and carbamate pesticides, the detection limit is less than or equal to 0.003 mg / kg, the detection limit change is less than or equal to 40% after the detection card is stored at 37 DEG C for one month, and the cross reaction rate is less than or equal to 10%. The whole process is shorter than or equal to 45 minutes, operation is convenient, interference resistance is high, and the method is suitable for on-site rapid quantitative detection and can meet the requirements of grassroots supervision, farmer market self-inspection and the like.

The present invention relates to synergistic and stable pesticidal compositions for controlling pests harmful to crop plants. More specifically, the compositions of the invention comprise at least one active compound selected from pyrethroid compounds, at least one neonicotinoid compound, an emulsifying system, a co-solvent and a solvent. In addition, the invention also provides a method for preparing the synergistic insecticidal composition.

The application provides an anti-termite sealing material of silica gel foam and a preparation method thereof, and belongs to the technical field of polymer sealing materials. The raw material formula of the anti-termite sealing material of silica gel foam is as follows: vinyl silicone oil, reinforcing filler, flame-retardant filler, contact killing agent, bait agent, odor agent, structure control agent, inhibitor, platinum catalyst, foaming agent, hydroxyl silicone oil and hydrogen-containing silicone oil; wherein the contact killing agent is one or more of pyrethroid, neonicotinoid, phenylpyrazole, boric acid, glycine, erythritol and fipronil; the bait agent is one or more of diatomite, talcum powder, capsaicin, dihydrocapsaicin and denatonium benzoate; and the odor agent is one or more of camphor oil, peppermint oil, limonin, limonene, citral, decanal, octanal and nonanal. The anti-termite sealing material of silica gel foam has excellent flame-retardant performance, mechanical performance and anti-termite biting performance, and can well protect the integrity of the sealing material.

The invention discloses a design and detection method of a functional modified silicon quantum dot (SiQDs) fluorescent sensor, belongs to the technical field of environmental pollutant detection, and is characterized in that fluorescent silicon quantum dots containing hydrazino functional groups are prepared by doping phenylhydrazine derivatives when traditional silicon quantum dots are prepared. Meanwhile, fluorescent silicon quantum dots with the emission wavelength of 400-700 nm can be prepared by adding different types of fluorescent dyes. The silicon quantum dot has good luminescence property and stability, and especially has good response capability when being used for detecting a pyrethroid hydrolysate 3-phenoxybenzaldehyde.

The invention relates to a sanitary insecticide, in particular to a bug insecticidal composition containing afluthrin and application of the bug insecticidal composition. The composition comprises an active component A and an active component B in a weight ratio of (1: 20)-(20: 1), wherein the active ingredient A is afluthrin; and the active ingredient B is dinotefuran, acetamiprid, imidacloprid, thiacloprid, thiamethoxam, flupyradifurone or sulfoxaflor. The composition provided by the invention not only solves the problem of resistance of bed bugs to pyrethroid, but also improves the pesticide effect and pesticide effect stability of the composition through the synergistic interaction among the active components, and has the characteristics of high efficiency, low toxicity, environmental friendliness and the like. The binary composition is suitable for preventing and treating bugs in indoor activity places such as families, carriages, hotels, factory dormitories and the like.

The application provides a slow-release nano-suspension agent and a preparation method and application thereof, and belongs to the technical field of pesticide preparations. The slow-release nano-suspension agent is prepared from the following raw materials in percentage by weight: pyrethroid 1-20%, wetting agent 3-8%, dispersing agent 2-7%, antifreezing agent 4-6%, defoaming agent 0.05-1%, preservative 0.01-1%, pH regulator 0.01-0.4%, and water is added to 100%; the wetting agent is polyvinyl alcohol and sodium lignosulfonate, and the mass ratio of the polyvinyl alcohol and the sodium lignosulfonate is 1-3:3. The slow-release nano-suspension agent can reduce the decomposition of the raw material, gradually releases through the slow destruction of hydrogen bonds, and prolongs the drug efficacy. The slow-release nano-suspension agent is stable in the tests of heat storage, cold storage and long-term storage, and the slow-release nano-suspension agent has obvious prevention effect and the effective period is prolonged by 1-2 times compared with the traditional suspension agent.

Provided is a bed bug control agent having an excellent controlling effect against resistant bed bugs.　This bed bug control agent for controlling resistant bed bugs comprises a specific pyrethroid compound having a vapor pressure of at least 6.6661×10-3 Pa at 25ºC, wherein the specific pyrethroid compound is profluthrin and / or empenthrin, and said bed bug control agent is for contact control or spatial control.