32 results about "Dichlorophenoxyacetic acid" patented technology

The invention relates to a preparation method of a fluorescence sensor. The invention relates to a preparation method of a portable pesticide detection fluorescence sensor of silver nanocluster (AgNCs) at zeolite imidazolate skeleton (ZIF) at polydopamine (PDA) and application of the portable pesticide detection fluorescence sensor in on-site rapid detection of 2, 4-dichlorophenoxyacetic acid (2, 4-D), and belongs to the technical field of fluorescence sensors. The method comprises the following steps: wrapping AgNCs with ZIF, and modifying the surface of the AgNCs with dopamine to form an AgNCs-ZIF-PDA composite material with high stability, high fluorescence enhancement, high enzyme responsiveness and high controllability; then, the material is integrated into a nano clay-acrylamide hydrogel matrix with high fitness, and a sensor with an adjustable shape is constructed. The sensor can be adaptively attached to the surface of a plant and is used for long-term in-situ monitoring of 2, 4-D pesticide. And in combination with an image processing algorithm, the system realizes accurate tracking of the tomato plant surface 2, 4-D degradation process, and the detection limit reaches 23.3 ng / mL. According to the invention, non-intrusive and low-cost technical support is provided for crop health management and sustainable precision agriculture.

The application discloses a stenotrophomonas maltophilia capable of degrading 2,4-dichlorophenoxyacetic acid, and a stenotrophomonas maltophilia strain GDUTXIONG3 is screened, wherein the strain GDUTXIONG3 is preserved in the China Center for Type Culture Collection on October 26, 2022, and the preservation number is CCTCC NO: M 20221673. The application discloses, for the first time, the degradation effect of the stenotrophomonas maltophilia on 2,4-dichlorophenoxyacetic acid, and the degradation rate of the strain on 50 mg / L of 2,4-dichlorophenoxyacetic acid can reach 82.9% or more within 96 hours. The GDUTXIONG3 strain is pollution-free and harmless in use, and can be used for repairing and treating an environment polluted by 2,4-dichlorophenoxyacetic acid.

According to the missible oil preparation containing the fluroxypyr-mepthyl and the 2, 4-dichlorphenoxyacetic acid and the preparation method of the missible oil preparation, the components and the proportion of an emulsifier are optimized, the screened composite emulsifier is good in emulsification effect, the particle size of the emulsion is smaller than 1 micrometer after the emulsion is diluted in water, the emulsion is more evenly distributed on crops compared with a traditional emulsion with the particle size being 3-5 micrometers, and the emulsion is more stable in effect. Compared with the prior art, the weeding composition has the advantages that the pesticide damage risk of 2, 4-dichlorphenoxyacetic acid and fluroxypyr-mepthyl to crops is reduced, the safety of the crops is improved, and meanwhile, the pesticide effect on broadleaf weeds such as scandent hop and field bindweed is also obviously improved. A specific cosolvent is selected, and the prepared missible oil preparation is stable in performance and not prone to layering or crystallization.

The application discloses a traditional Chinese medicine combined medicament for treating 2,4-dichlorophenoxyacetic acid-induced liver injury of livestock and poultry, which is prepared by compounding procyanidin B3, cryptotanshinone and resveratrol, and the three components have synergies and can effectively improve the 2,4-dichlorophenoxyacetic acid-induced liver injury problem of livestock and poultry. The application has simple formula and simple preparation process, can be developed into green and safe liver-protecting veterinary drugs and functional feed, and has good application and popularization value in the field of livestock and poultry breeding.

This invention belongs to the technical field of crystalline materials, and discloses a praseodymium-based complex crystalline material, its preparation method, and its fluorescence recognition application, with the chemical formula {[Pr(L 1.5 The compound is 2,2'-(2,3,5,6-tetramethyl-1,4-phenylene)bis(methylene)bis(sulfonyl)diethyl)benzoic acid. The preparation method involves dissolving Pr(NO3)3·6H2O, H2L, and the auxiliary uncoordinated ligand 1,4-bis(imidazol-1-yl)benzene in a DMF / ethanol / water mixed solvent, reacting at 90°C for 3 days, and then cooling to obtain plate-like crystals. This material is effective against Fe... 3+ It exhibits highly selective and sensitive fluorescence quenching response with a quenching rate of 99.8%; it can specifically recognize ethoxyquinoline (fluorescence enhancement) and 2,4-dichlorophenoxyacetic acid (fluorescence quenching); it can specifically recognize the antibiotic oxytetracycline with a fluorescence quenching rate exceeding 99%.

The invention relates to herbicidal mixtures and compositions comprising isoxaben, dithiopyr, 2,4-Dichlorophenoxyacetic acid (2,4-D), 3,6-dichloro-2-methoxybenzoic acid (dicamba) and methylchlorophenoxypropionic acid (Mecoprop or MCPP), and methods of using the same.

The invention provides a synergistic weeding composition containing picloram. The synergistic weeding composition comprises an effective component and an auxiliary agent, the effective components comprise 2, 4-dichlorphenoxyacetic acid (2, 4-D) and picloram, and the weight ratio of the 2, 4-dichlorphenoxyacetic acid (2, 4-D) to the picloram is (1: 15)-(18: 1); the auxiliary agent comprises a basic auxiliary agent and a functional auxiliary agent, and the functional auxiliary agent is a combination of a gramineous weed synergist and an anti-drifting agent; the weight percentage of the effective components in the weeding composition is 5%-90%, and the weight percentage of the auxiliary agent in the weeding composition is 10%-95%. According to the scheme, through collaborative screening of the solvent and the auxiliaries, the heat storage (54 + / -2 DEG C, 14 days) layering rate of the soluble concentrate is smaller than or equal to 1%, the suspension rate is larger than or equal to 98%, the stability is remarkably superior to that of an existing compound preparation, and the soluble concentrate is suitable for the uncultivated land complex storage and use environment.

The invention relates to the technical field of pesticides, and particularly discloses a compound herbicide composition based on 2, 4-D glufosinate-ammonium and a preparation method of the compound herbicide composition. The composition is prepared from raw materials in percentage by mass as follows: 2%-5% of 2, 4-D, 15%-25% of glufosinate-ammonium, 4%-8% of an emulsifier, 0.01%-1% of a defoaming agent, 1%-5% of an anti-freezing agent, 2%-10% of a wetting dispersant, 0.1%-1% of an anti-drifting agent, 1.5%-2.5% of a pH regulator and the balance of water. The invention also provides a preparation method of the composition. Compared with the prior art, the anti-drifting agent is added into the herbicide composition, so that the effects of improving the pesticide effect and reducing the phytotoxicity are achieved.

The application provides a kind of F-free one-dose low IGZO damage metal etching solution and preparation method thereof, and relates to the technical field of semiconductor display panel manufacturing.The F-free one-dose low IGZO damage metal etching solution is composed of the following raw materials: hydrogen peroxide, complexing agent, 2,4-dichlorophenoxyacetic acid, ethylenediaminetetraacetic acid, corrosion inhibitor compound, and ultra-pure water is added to make up the volume;the corrosion inhibitor compound is obtained by mixing 2-mercapto-5-methylbenzimidazole and aminotrimethyl phosphonic acid in a mass ratio of 1:2-3, and the ratio of the addition amount of ethylenediaminetetraacetic acid to the corrosion inhibitor compound is ≤1.2.The application uses a complexing agent-corrosion inhibitor compound synergistic system, the IGZO layer damage rate is <5%, which significantly improves the device yield, and the Cu etching rate is 500-800 Å / min, the MoTi etching rate is 300-500 Å / min, and the rate matching is good.

The present application discloses a kind of herbicidal composition containing 5-phenyl-4,5-dihydroisoxazole-3-carboxylic acid ethyl ester and component B, the component B is selected from one or several of the following: nicosulfuron, sulfometuron, foramsulfuron, fenoxaprop-p-ethyl, benzobicylon, isoxaflutole, dicamba, carfentrazone-ethyl, 2,4-dichlorophenoxyacetic acid and its salt, 2,4-d and its salt, 2,4-d isooctyl and mesosulfuron etc..The composition of the present application has good synergistic effect, is safe to crops, and has broad application prospect.

The present application discloses a kind of herbicidal composition containing 5-phenyl-4,5-dihydroisoxazole-3-carboxylic acid ethyl ester and component B, the component B is selected from one or several of the following: nicosulfuron, sulfometuron, foramsulfuron, fenoxaprop-p-ethyl, benzobicylon, isoxaflutole, dicamba, carfentrazone-ethyl, 2,4-dichlorophenoxyacetic acid and its salt, 2,4-d and its salt, 2,4-d isooctyl and mesosulfuron etc..The composition of the present application has good synergistic effect, is safe to crops, and has broad application prospect.

The invention relates to the field of cosmetics, in particular to an astragalus membranaceus callus extract, a preparation method thereof and cosmetics. The method for preparing the astragalus membranaceus callus extract comprises the following steps: culturing under a long-day condition to obtain astragalus membranaceus calluses; the method comprises the following steps: extracting astragalus membranaceus calluses by taking propylene glycol as a solvent; wherein the astragalus membranaceus callus is obtained by inoculating the astragalus membranaceus callus to an induction culture medium for induction, and the induction culture medium comprises 6-benayl aminopurine, naphthylacetic acid and 2, 4-dichlorphenoxyacetic acid; based on the total volume of the induction culture medium, the concentration of the 6-benayl aminopurine is 0.5-2.0 mg / L; the concentration of the naphthylacetic acid is 0.5-2.0 mg / L; the concentration of the 2, 4-dichlorphenoxyacetic acid is 0.1 mg / L to 1.0 mg / L. According to the technical scheme, the content and quality of active ingredients are remarkably improved. The obtained extract has relatively strong antioxidant and whitening activity, is free of other organic solvent residues, is clear in color, and has a relatively good prospect as a cosmetic raw material.

The present application discloses a kind of herbicidal composition containing 5-phenyl-4,5-dihydroisoxazole-3-carboxylic acid ethyl ester and component B, the component B is selected from one or several of the following: nicosulfuron, sulfometuron, foramsulfuron, fenoxaprop-p-ethyl, benzobicylon, isoxaflutole, dicamba, carfentrazone-ethyl, 2,4-dichlorophenoxyacetic acid and its salt, 2,4-d and its salt, 2,4-d isooctyl and mesosulfuron etc..The composition of the present application has good synergistic effect, is safe to crops, and has broad application prospect.

The present application belongs to the technical field of plant cell culture, and relates to a method for inducing callus of potato 'Kexin 13'. The method comprises the following steps: (1) taking potato 'Kexin 13' explants and transferring them to callus induction medium to form callus, wherein the induction medium is based on MS medium and supplemented with 6-benzylaminopurine, kinetin and 2,4-dichlorophenoxyacetic acid, and has a pH of 5.8-6; (2) taking the callus formed in step (1) and transferring it to differentiation medium to form adventitious buds, wherein the differentiation medium is based on MS basic medium and contains 6-benzylaminopurine, kinetin, gibberellin and myo-inositol, and has a pH of 5.8-6. Through induction culture and differentiation culture, the callus of potato 'Kexin 13' has a high induction rate and differentiation rate.

The present application discloses a kind of herbicidal composition containing 5-phenyl-4,5-dihydroisoxazole-3-carboxylic acid ethyl ester and component B, the component B is selected from one or several of the following: nicosulfuron, sulfometuron, foramsulfuron, fenoxaprop-p-ethyl, benzobicylon, isoxaflutole, dicamba, carfentrazone-ethyl, 2,4-dichlorophenoxyacetic acid and its salt, 2,4-d and its salt, 2,4-d isooctyl and mesosulfuron etc..The composition of the present application has good synergistic effect, is safe to crops, and has broad application prospect.

The present application discloses a kind of herbicidal composition containing 5-phenyl-4,5-dihydroisoxazole-3-carboxylic acid ethyl ester and component B, the component B is selected from one or several of the following: nicosulfuron, sulfometuron, foramsulfuron, fenoxaprop-p-ethyl, benzobicylon, isoxaflutole, dicamba, carfentrazone-ethyl, 2,4-dichlorophenoxyacetic acid and its salt, 2,4-d and its salt, 2,4-d isooctyl and mesosulfuron etc..The composition of the present application has good synergistic effect, is safe to crops, and has broad application prospect.

The application discloses a preparation method of 2,4-dichlorophenoxyacetic acid synthesized by composite molecular sieve ZSM-5 and a water-reducing process, and relates to the following steps: under alkaline conditions, 2,4-dichlorophenol is reacted with a sodium chloroacetate solution under the catalysis of a composite molecular sieve catalyst to obtain 2,4-dichlorophenoxyacetic acid sodium salt crude product through condensation; and then hydrolysis and hydrochloric acid acidification are carried out to obtain 2,4-dichlorophenoxyacetic acid product. The process can reduce energy consumption, shorten reaction time and reduce production cost in obtaining 2,4-dichlorophenoxyacetic acid, and can improve the conversion rate and yield of the product and the color of the product. When a new batch of 2,4-dichlorophenoxyacetic acid sodium salt crude product is dissolved in the acidification reaction, the washing water of the last batch of 2,4-dichlorophenoxyacetic acid is used as the solvent reaction liquid, and the washing water of the last batch is used for the first water washing of the final product and is used in turn. The water consumption is reduced, the wastewater treatment cost is reduced, the conversion rate and yield of the product are improved, the product has high purity, the process is simple, the conditions are mild, and the raw materials can be recycled.

The invention belongs to the technical field of biology, and particularly relates to an induction culture method of a symphytum officinale genetic transformation system, which comprises the following steps: inoculating a symphytum officinale explant into an induction culture medium containing 0.3-0.5 mg / L naphthylacetic acid and 2-3mg / L 6-benayl aminopurine, and culturing to obtain a callus; inoculating the callus to an adventitious bud induction culture medium containing 0.1 mg / L of 2, 4-dichlorphenoxyacetic acid and 1.0 mg / L of 6-benayl aminopurine for culture, and inducing the callus to differentiate adventitious buds; and inoculating the adventitious buds to an adventitious root induction culture medium containing 0.1 mg / L naphthylacetic acid and 0.5 mg / L 6-benayl aminopurine, and culturing to obtain the symphytum officinale regeneration system. According to the regeneration system establishment method, the symphytum officinale explant infected by the agrobacterium rhizogenes K599 with the GUS reporter gene is cultured, and finally a symphytum officinale regeneration plant with the GUS gene is obtained.

This disclosure includes herbicidal compounds, herbicidal compositions containing one or more of the herbicidal compounds thereof, and related agricultural methods of using the herbicidal compounds or compositions thereof to control undesirable vegetation. The herbicidal compounds include (2,4-Dichlorophenoxy)acetic acid analogs, or derivatives thereof, such as esters, amides, alkoxyamides, aminooxy esters, linkers, and carbon groups of the (2,4-Dichlorophenoxy)acetic acid analogs thereof.

The invention relates to the technical field of pesticide preparations, in particular to a pesticide microcapsule suspending agent and a preparation method and application thereof. According to the pesticide microcapsule suspending agent, microcapsules are prepared from the following raw materials in parts by mass: 2 to 7 parts of urea, 7 to 24.5 parts of formaldehyde, 3 to 9 parts of an emulsifier, 0.1 to 1 part of a de-foaming agent, 2 to 4 parts of a diluent, 10 to 15 parts of a synergistic auxiliary agent, 2 to 4 parts of a dispersing agent and 25 to 35 parts of 2, 4-dichlorphenoxyacetic acid, the synergistic auxiliary agent is prepared from the following raw materials in parts by mass: 0.5 to 1.5 parts of carboxymethyl porous Chinese chestnut starch, 0.5 to 1.5 parts of sodium alginate, 1.5 to 2.5 parts of calcium chloride, 2.5 to 3.5 parts of alginate, 1.5 to 2.5 parts of beta-cyclodextrin and 1 to 2 parts of a coupling agent; according to the pesticide microcapsule suspending agent prepared in the invention, the synergistic additive is added, so that 2, 4-dichlorophenoxyacetic acid can be effectively coated, and the encapsulation efficiency and the pesticide effect utilization rate of 2, 4-dichlorophenoxyacetic acid are remarkably improved; meanwhile, the prepared pesticide microcapsule suspending agent has good photolysis resistance, rain wash resistance and stability.

The invention relates to the technical field of herbicides, in particular to a herbicide and a preparation method and application thereof.The herbicide is prepared from, by weight, 10%-20% of benzothiazole derivatives, 1%-20% of auxiliary active ingredients, 1%-5% of synergists, 0.1%-30% of accelerants, 30%-70% of carriers and 5%-15% of surface active auxiliaries, and the sum of the mass fraction of all the ingredients is 100%; wherein the benzothiazole derivative is 2-hydroxy-5-methoxyl-N-methylbenzothiazole or an agricultural acceptable salt thereof, and the auxiliary active component comprises one or more of 2, 4-dichlorphenoxyacetic acid, p-nitrobenzaldehyde and acetonyl acetone. According to the herbicide provided by the invention, the benzothiazole derivative is used as a main active component and is matched with the auxiliary active component for use, so that efficient prevention and removal can be realized under the condition of low dosage, and the synergistic synergist and the accelerant are added, so that wetting, permeation and uptake and conduction of the active component on weed leaves are facilitated; the pesticide effect taking speed is increased; the lasting period is prolonged.

A kind of crystallization device of continuous production 2,4-dichlorophenoxyacetic acid, comprising: premix unit is equipped with 2,4-dichlorophenoxyacetic acid methyl ester import, catalyst aqueous solution import and premix outlet;With the hydrolysis unit of premix outlet connection, it includes several groups of series hydrolysis rectification device;Hydrolysis rectification device is equipped with pump, rectification column and hydrolysis kettle in turn along the direction of feed;Hydrolysis unit is equipped with material outlet;Through hydrolysis kettle transfer pump and material outlet connection, rectification unit is equipped with water import and hydrolysis liquid outlet;With the crystallization unit of hydrolysis liquid outlet connection, it includes several groups of series crystallization kettle;Crystallization unit is equipped with crystallization material outlet;With centrifugal filtration unit of crystallization material outlet connection.The present application is with 2,4-dichlorophenoxyacetic acid ester as raw material, through hydrolysis reaction rectification continuous and gradient crystallization continuous, realize the overall better interaction, can continuous production 2,4-dichlorophenoxyacetic acid;Production efficiency is high, product stability is good, and device floor area is small.

The present application discloses a kind of herbicidal composition containing 5-phenyl-4,5-dihydroisoxazole-3-carboxylic acid ethyl ester and component B, the component B is selected from one or several of the following: nicosulfuron, sulfometuron, foramsulfuron, fenoxaprop-p-ethyl, benzobicylon, isoxaflutole, dicamba, carfentrazone-ethyl, 2,4-dichlorophenoxyacetic acid and its salt, 2,4-d and its salt, 2,4-d isooctyl and mesosulfuron etc..The composition of the present application has good synergistic effect, is safe to crops, and has broad application prospect.

This invention relates to the field of plant tissue culture technology, and in particular to a culture medium for inhibiting browning of Ganoderma lucidum explants and improving callus induction rate, and its application. This invention provides an MS-based culture medium, further comprising 2,4-dichlorophenoxyacetic acid (2,4-D), naphthaleneacetic acid (NAA), 6-furfurylaminopurine (KT), polyvinylpyrrolidone (PVP), sucrose, and agar, which inhibits browning of Ganoderma lucidum explants and improves callus induction rate. The pH of this culture medium is 5.83-5.85. Examples show that the culture medium provided by this invention can significantly improve the callus induction rate of Ganoderma lucidum. Furthermore, the callus obtained from the callus induction medium can be subcultured to obtain a large amount of loosely textured and stable callus, providing a high-quality "seed source" for the industrial production of Ganoderma lucidum suspension cells.

The present application discloses a kind of herbicidal composition containing 5-phenyl-4,5-dihydroisoxazole-3-carboxylic acid ethyl ester and component B, the component B is selected from one or several of the following: nicosulfuron, sulfometuron, foramsulfuron, fenoxaprop-p-ethyl, benzobicylon, isoxaflutole, dicamba, carfentrazone-ethyl, 2,4-dichlorophenoxyacetic acid and its salt, 2,4-d and its salt, 2,4-d isooctyl and mesosulfuron etc..The composition of the present application has good synergistic effect, is safe to crops, and has broad application prospect.

The present application discloses a kind of herbicidal composition containing 5-phenyl-4,5-dihydroisoxazole-3-carboxylic acid ethyl ester and component B, the component B is selected from one or several of the following: nicosulfuron, sulfometuron, foramsulfuron, fenoxaprop-p-ethyl, benzobicylon, isoxaflutole, dicamba, carfentrazone-ethyl, 2,4-dichlorophenoxyacetic acid and its salt, 2,4-d and its salt, 2,4-d isooctyl and mesosulfuron etc..The composition of the present application has good synergistic effect, is safe to crops, and has broad application prospect.

This invention provides a ternary herbicidal suspension emulsion containing 2,4-D isooctyl ester, terbutaline, and acetochlor. Its preparation components include: 2,4-D isooctyl ester, terbutaline, acetochlor, a dispersant; an emulsifier; a stabilizer; a dispersion medium; other adjuvants; and water. The stabilizer comprises vitamin E polyethylene glycol succinate and modified silica. This invention, through the specific ratio of 2,4-D isooctyl ester, terbutaline, and acetochlor, expands the weeding range and improves the weeding effect, offering advantages such as rapid and thorough weed control with low toxicity. The specific stabilizer used in this invention results in finer particle size and higher suspension rate during the grinding process. By selecting a suitable emulsifier and considering the characteristics of cornfields and the properties of the active ingredient, this invention achieves excellent weeding performance without affecting crop growth and development.

The present application relates to the technical field of macadamia planting, comprising the following steps: cutting diseased branches; chemical control: spraying 0.03-0.08% copper sulfate, 10-20 mg / L 2,4-dichlorophenoxyacetic acid, potassium fulvate 1800-2200 times liquid, 0.2-0.5% potassium dihydrogen phosphate, and tea bran water 150-300 times liquid on the macadamia nut trees from which the diseased branches are cut; tree vigor recovery: supplementing fertilizer at the roots of the macadamia nut trees from which the diseased branches are cut. The method of the present application can better prevent and inhibit the re-emergence of parasitic plants, and can also accelerate the renewal and rejuvenation of the macadamia nut trees, and ensure the normal growth and development of the fruits.

The invention provides an F-free one-dosage type low IGZO damage metal etching solution and a preparation method thereof, and relates to the technical field of semiconductor display panel manufacturing. The F-free one-dosage form low IGZO damage metal etching liquid is prepared from the following raw materials: hydrogen peroxide, a complexing agent, 2, 4-dichlorphenoxyacetic acid, ethylenediamine tetraacetic acid, a corrosion inhibition compound agent and the balance of ultrapure water, the corrosion inhibition compound agent is obtained by mixing 2-mercapto-5-methylbenzimidazole and amino trimethylphosphonic acid according to the mass ratio of 1: (2-3), and the ratio of the addition amount of the ethylenediamine tetraacetic acid to the addition amount of the corrosion inhibition compound agent is smaller than or equal to 1.2. According to the method, a complexing agent-corrosion inhibition compound synergistic system is adopted, the damage rate of an IGZO layer is smaller than 5%, the device yield is remarkably increased, the etching rate of Cu is 500-800 / min, the etching rate of MoTi is 300-500 / min, and the rate matching performance is good.

The present application discloses a kind of herbicidal composition containing 5-phenyl-4,5-dihydroisoxazole-3-carboxylic acid ethyl ester and component B, the component B is selected from one or several of the following: nicosulfuron, sulfometuron, foramsulfuron, fenoxaprop-p-ethyl, benzobicylon, isoxaflutole, dicamba, carfentrazone-ethyl, 2,4-dichlorophenoxyacetic acid and its salt, 2,4-d and its salt, 2,4-d isooctyl and mesosulfuron etc..The composition of the present application has good synergistic effect, is safe to crops, and has broad application prospect.