146 results about "Dinitroaniline" patented technology

The invention relates to a compounded herbicide composition for rice fields, which contains the following two effective components: component (A): pyribenzoxim; component (B): a herbicide which is one of the following compounds: triazines compounds, heterocyclic compounds, phenoxy compounds, amide compounds, diphoenyl ether compounds, sulfonylurea compounds, phenoxyalkanoic acid compounds, botanical compounds, organic phosphorus compounds, urea compounds, dinitroaniline compounds, benzamide compounds and carbamate compounds; and wherein, the weight ratio of the component (A) to the component (B) is 1-50: 1-50.

The invention belongs to the technical field of physicochemical testing of residual pesticide in tobacco and a tobacco product and in particular to a method for mensurating the residual amounts of six classes of dinitraniline pesticides, The method is to extract residual pesticides in an accelerated solvent extraction instrument (ASE), and use a gas chromatograph (matched with electron capture detector (ECD) to directly mensurate the residual amounts of six classes of the dinitraniline pesticides in the tobacco and the tobacco product, namely, butralin, flumetralin, isopropalin, pendimethalin, benfluralin and trifluralin. The method overcomes the disadvantages of a sample treatment method in the prior art and optimizes a sample pretreatment method and the instrument detecting conditions aiming at a tobacco sample. Compared with the prior art, the method has the advantages of simple pretreatment process, reduction of the interference of pigment and other impurities in the tobacco, high automation degree of the whole operation, accurate operation, high sensitivity and good repeatability.

The invention relates to the technical field of dispersed dyes. In order to solve the problem that the dyes having a 2,4-dinitraniline structure are all poor in light fastness, the invention provides a dispersed dye mixture which is prepared by the step of mixing component A and component B, wherein the weight percentage of the component A is 10-92%. The 2,4-dinitraniline is used for synthesizing the dye so that the big problem which is always evaded in the industry is solved in a compounding and synergic way; as a result, a dye composition which is good in deep dyeing effect and excellent in light fastness can be obtained while the cost of the color matching dyes is greatly reduced.

One aspect of the present invention is a sprayable composition for coating pipe for protecting it from one or more of root intrusion or root growth when the coated pipe is placed underground. Such sprayable formulation includes a 2,6-dinitroaniline herbicide; a polymer pellet impregnated with a 2,6-dinitroanililne herbicide-sorbed colloidal clay; and a film-forming polymer. Another aspect is pipe coated with the dried residue of a coating of a 2,6-dinitroaniline herbicide; a polymer pellet impregnated with a 2,6-dinitroaniline herbicide-sorbed colloidal clay; and a film-forming polymer, wherein the coated pipe is protected from one or more of root intrusion or root growth when the coated pipe is placed underground.

The invention provides an excised mutagenesis tetraploid method of water melon and ploidy early stage certification technique, wherein dinitro toluene herbicide (DNH) is employed to substitute the conventional colchicines as inducer, whose function is to suppress the Mitosis in the metaphase of cell division through the mechanism of interfering spindle, so as to double the tissue cell chromosome. The method has the advantages of increased inducement success rate and substantially shortened time required for inducement.

The invention discloses a preparation method of 5-aminobenzimidazole, which comprises the following steps: 1) synthesis of 2,4-dinitroaniline; 2) synthesis of 4-nitro-1,2-phenylenediamine; 3) synthesis of 5-nitro benzimidazolone; and 4) hydrogenation reduction of the 5-nitro benzimidazolone. The preparation method of the 5-nitro benzimidazolone is a catalytic hydrogenation reducing process which has completed reaction and less side reaction, does not have pollution on the environment, and the product generated by the method has high quality and high yield, and is suitable for industrialized production.

A synthetic technology for 2-chloro-4,6-dinitroaniline is disclosed. The technology comprises (1) dispersing 2,4-dinitroaniline in hydrochloric acid and a catalyst and stirring to form a slurry, wherein the mass fraction of hydrochloric acid is 1-8%; (2) introducing chlorine into the slurry obtained in the step (1) for chlorination reaction; (3) adding a sodium chlorate solution into the reaction solution in the step (2) and continuing performing chlorination reaction, wherein the mass fraction of the sodium chlorate solution is 20%-40%; and (4) filtering the reaction solution obtained in the step (3), washing the filter cake until the pH value is 6.0-7.0, returning the mother liquid to the step (1) as hydrochloric acid and the catalyst for cyclic utilization utile the sodium chloride in the mother liquid is saturated, and discharging the mother liquid into a wastewater processing system, wherein the molar ratio of 2,4-dinitroaniline, chlorine and sodium chlorate is 1:(0.2-0.8):(0.06-0.3). The technology is high in yield, the purity of the obtained product is high, cost is low, the cycling times of the mother liquid are more, the wastewater discharging amount is less, and the benifit of energy saving and emission reduction is substantial.

The invention relates to the chemical industry field, in particular relates to a preparation method of 2,4-binitro-6-chloroaniline. The preparation method of the 2,4-binitro-6-chloroaniline is carried out under heat insulation condition by adopting a pipeline reactor, the process from contact of the materials to reaction is finished instantly without producing polychlorinated compounds and chlorine dioxide, the potential safety hazard is avoided, the product quality and yield are greatly improved, the HPLC (high performance liquid chromatography) purity is not less than 98%, and the 2,4-dinitraniline residue is not more than 1%; the final product does not come into contact with oxidized sodium chlorate and chlorine due to adoption of the pipeline continuous reaction, no oxidation product is produced in the system, the product quality is improved, and the infinite recycling of the master liquid can be realized; the mother liquid is filtered through a film to recycle sodium chloride, and the infinite recycling of the mother liquid is realized after the mother liquid adsorbs hydrogen chloride, and the sodium chlorate approaches to a theoretical consumption.

A weed control particle is provided that includes a delivery granule having a surface and a core. A dicarboximide herbicide is adhered to the surface, mixed into the core of the granule, or both. A dinitroaniline herbicide is adhered to the surface, mixed into the core of the granule, or both. A process of weed control includes distributing such particles or two separate types of particles that each have one of the two types of herbicides to a plot around a desired plant. The weed control particles are distributed at a density such that said dicarboximide herbicide is present at between 20% and 80% of full rate for the dicarboximide herbicide and the dinitroaniline is present at between 20% and 70% of full rate for the dinitroaniline herbicide to provide weed control around the desired plant.

The present invention relates to the technical field of disperse dyes, and provides an azo type disperse dye composition synthesis method so as to solve the problem of not ideal light fastness of the single color variety due to 2,4-dinitroaniline. The synthesis method comprises that: a diazo component 2,4-dinitroaniline of various components in the desired mixture concurrently reacts in the same diazotization device, various coupling components of the mixed dye are coupled in the same coupling device through a plurality of coupling manners according to the ratio requirement with the diazo during coupling, the obtained coupling solution can be subjected to a temperature increase crystal transformation treatment before entering a filter if necessary so as to make the crystal form of the obtained dye be stable, and pressure filtration is performed to directly obtain the dye mixture with the required ratio. According to the present invention, the light fastness problem is solved, the crystal transformation process is mild, and the high temperature dispersion stability, the low temperature dispersion stability and the chromatic light of the dye are stable.

The invention relates to a transparent polyimide material and a preparation method thereof. According to the preparation method, tetrafluorophthalic acid and 3,5-dinitraniline are taken as raw materials and are subjected to two-step reaction of acylation and hydrogenation to generate a diamine monomer, namely 2-(3,5-diaminodiphenyl)-4,5,6,7-(tetrafluoroisoindoline)-1,3-dione, and the diamine monomer is reacted with aromatic diamine and dianhydride to generate polyimide. By introducing fluorine atoms and strong electron withdrawing groups into the structure of diamine, the generation of charge transfer complexes (CTC) in molecules is inhibited, and the transparency of polyimide is remarkably improved; the glass-transition temperature of prepared polyimide is 300-368 DEG C, and the light transmissivity of a thin film with the thickness of 10-12 microns at 450nm is 90%-96%; the prepared transparent polyimide material has the advantages of high transparency and glass-transition temperature and good dissolubility and heat resistance and has wide application prospects in the related fields of flexible transparent substrates, panel display and the like.

The invention relates to a synthesis method of 2,4-binitro-6-bromaniline diazonium salt. The synthesis method is characterized in that 2,4-dinitroaniline is used as a raw material; 2,4-binitro-6-bromaniline sulfuric acid solution or suspending liquid is obtained by bromination reaction in an acidic medium; and then diazotization reagent is directly added for diazotization, so as to obtain the 2,4-binitro-6-bromaniline diazonium salt. The synthesis method has the advantages of simple process, low equipment requirement, less three wastes and low energy consumption, and is easy to be industrialized.

This invention provides repellent devices and methods for control of root intrusion and plant growth. One aspect of this invention is a geotextile in which 2,6-dinitroaniline is stored inside the individual filaments. The 2,6-dinitroaniline is stored in nanoclay or smectite clay reservoirs that control the rate of release of the 2,6-dinitroaniline. These reservoir particles are placed in the fibers during the melt spinning production of the fibers or by film-to-fiber processes. The particles are very thin and are oriented within the fibers during the spinning process. These clay reservoirs are superior to conventional carbon-based reservoirs, because the dispersed clay materials have a uniform, e.g., 1-nanometer, thickness that is needed to fit into individual filaments. Nonwoven, woven, or knitting processes are used to make the geotextile fabrics. The fibers of this invention prevent root intrusion into these fabrics.

The invention discloses a method for removing nitrosamine from dinitroaniline herbicides. The method comprises the steps of: adding a solvent, haloid acid and a remover methylsulfonic acid in the production synthesis process of raw dinitroaniline herbicide or a raw dinitroaniline herbicide product, and carrying out nitrous removal reaction to convert byproduct nitrosamine into a target product, such as trifluralin, pendimethalin, Amex820, oryzalin, dinitramine, isopropalin, bulab-37 and fluchloralin, so that the nitrosamine content is not more than 1.0ppm and achieves the export standard.

The invention discloses a synergistic compound bactericidal composition containing fluazinam and carbendazim, wherein the active ingredients of the composition mainly consist of the fluazinam and the carbendazim; and the mass ratio of the fluazinam to the carbendazim is 20:1-1:30. In the composition, the used carbendazim is benzimidazoles drug, the used fluazinam is 2, 6-dinitroaniline drug, and the fluazinam and the carbendazim are mixed to generate synergistic action. The composition disclosed by the invention has the advantages of reducing dosage and cost.

The invention relates to a method for preparing pendimethalin by aminating dimethyl-dinitro anisole. The method comprises the following concrete steps of: firstly, mixing, heating and refluxing 3,4-dimethyl-2,6-dinitroanisole, catalyst and excessive 3-pentyl amine for carrying out aminating reaction to generate N-(1-ethyl propyl)-3,4-dimethyl-2,6-dinitraniline; and secondly, distilling and reclaiming the unreacted 3-pentyl amine, cooling residues, and dissolving the cooled residuces with absolute ethanol, filtering to remove the catalyst and other insoluble substances, then removing ethanol to obtain 98 percent pendimethalin raw drug with the yield over 92 percent. Compared with the traditional synthetic production process of the pendimethalin raw drug, the preparation method not only has high yield, favorable quality and less wastewater, but also more importantly puts an end to the generation of N-nitrosamine substances in the pendimethalin raw drug.

The invention discloses a chlorination process of 2,4-dinitroaniline, which comprises the following specific steps: adding lignosulfonate into 2,4-dinitroaniline, and putting the mixture into water tosuspend in water; adding hydrochloric acid into a stirring barrel, simultaneously adding 2,4-dinitroaniline suspension and sodium chlorate into the stirring barrel for a reaction to expel excessive chlorine, adding sodium bisulfate into reactants to decompose residual chlorine, and filtering the liquid, washing the reaction product to be neutral, and drying the reaction product to obtain the 2,4-dinitroaniline.

The invention discloses a bactericide composition containing chemical bactericides and a biocontrol bacterium, a preparation and application of the bactericide composition or the preparation, and belongs to the field of plant protection and pesticide science. The composition comprises the chemical bactericides and biocontrol bacterium powder in a mass ratio of (1-10) to (1-10), wherein the viable count of the bacterium powder is not lower than 10<6>cfu/g; the chemical bactericides are preferably selected from carboxylic acid amide bactericides, phenylamide bactericides, benzamide bactericides, dinitroaniline bactericides and dithiocarbamate bactericides; the biocontrol bacterium is preferably bacillus amyloliquefaciens ZY-9-13, with collection number of CGMCC No.6162. The bactericide composition has excellent control effects on tobacco root knot nematode and tobacco black shank, has obviously better control effects than the singly used chemical bactericides or biocontrol bacterium, can achieve the effect of delaying chemical drug resistance and is especially suitable for controlling tobacco black shank in the field.

The invention provides a method for making N-(1-ethyl propyl)-3,4-dimethylaniline, belonging to the dinitroaniline class pesticide technical field. The method has the characteristics that o-xylene is used as a starting material, which is nitrified under a function of a catalyst to obtain 3,4-dimethyl nitrobenzene, and is hydrogenated, added and re-hydrogenated with 3-pentanone under the function of the catalyst, and then the N-(1-ethyl propyl)-3,4-dimethylaniline is obtained. The content of N-(1-ethyl propyl)-3,4-dimethylaniline is more than or equal to 98 percent; the operation procedure is simplified, and the row material is easy to obtain with low cost, thereby easily and industrially realizing.