54 results about "Hexazinone" patented technology

The invention discloses sugarcane field herbicide for low-volume spraying. The herbicide is in a form of a suspending agent; the pesticide ingredients include ametryn and herbicide II, wherein the herbicide II is prepared from one or combination of two of agroxone, diuron, hexazinone, tebuthiuron, halosulfuron-methyl, trifloxysulfuron, mesotrione or topramezone. According to the sugarcane field herbicide for low-volume spraying, ametryn and the herbicide II are mixed in a certain ratio and have synergistic effect on removing weeds of a sugarcane field, and the prevention and treatment effect is obviously superior to that of single agent; meanwhile, the herbicide can be prepared into the suspending agent for low-volume spraying, and therefore, the drift possibility can be obviously reduced, and the wetting and spreading performances of the components of pesticides can be improved; the herbicide also has the advantages of labor saving, water saving, drug saving, high in efficiency, long acting, environmental protection, and low in cost; the labor intensity can be greatly alleviated; the manual drug applying efficiency is improved, the labor can be greatly released, the agricultural production cost can be reduced, and the modern level of weeding the sugarcane field can be increased.

The invention provides a synthetic process of hexazinone. The synthetic process comprises the steps of: by taking ethanol, lime nitrogen, cyclohexylamine, dimethylamine, dimethyl sulfate, sodium methoxide and phosgene as main active ingredients, generating a series of chemical reactions in solvent, and carrying out desolventizing and concentration, crystallizing and separating and drying to obtain a finished hexazinone product. According to the synthetic process, the solvent extraction can be omitted, the reaction procedures can be reduced, the efficiency can be improved, the energy consumption can be saved by 10%, and the conversion rate can also be improved by 5%; while the amount of waste water can be greatly decreased, dimethylamine can be recycled, and the quality of solvent can be guaranteed; a great amount of water can be saved, therefore, the production cost can be greatly lowered.

The invention discloses an herbicide composition containing hexazinone and phenoxy carboxylic acid. The herbicide composition comprises the active ingredients formed by mixing the hexazinone and any one selected from 2-4 drops salt and ester thereof, 2-4 drops propionate and ester thereof, 2-4 drops butyrate and ester thereof, bimethyl tetrachloro salt and ester thereof, bimethyl tetrachloro propionate and ester thereof, bimethyl tetrachloro butyrate or clomeprop in phenoxy carboxylic acid, wherein the weight percent of the hexazinone is 1 to 70 percent; the weight percent of the phenoxy carboxylic acid is 1 to 70 percent; and the weight ratio of the hexazinone to the phenoxy carboxylic acid is (1:20)-(19:20) or (20:19)-(20:1). The herbicide composition is used for controlling weeds in gardens, forests, sugarcane fields or wastelands, the prevention effect is obviously improved compared with single dose, and the dosage of the pesticides can be reduced, so that the dosage cost is reduced, and the adverse effect of the pesticides on the environment is lightened; and moreover, the service life of each single dose can be prolonged, the application spectrum is widened, and the herbicide composition has great significance in overall management of the resistance of the pesticides.

A mixture of diuron, hexazinone and tembotrione is disclosed as useful for controlling undesired vegetation. Also disclosed is a herbicidal composition comprising diuron, hexazinone and tembotrione, and at least one additional component selected from the group consisting of surfactants, solid diluents and liquid diluents. Further disclosed is a method of controlling undesired vegetation comprising applying to the locus of the vegetation a herbicidally effective amount of the mixture.

The invention discloses a weeding combination containing hexazinone. The active ingredients of the combination adopt the mixture of hexazinone and an arbitrary component selected from ametrex, atrazine, simazine or cyanazine; the weight percentage of hexazinone is 1 to 70 percent, and the weight percentage of ametrex, atrazine, simazine or cyanazine is 3 to 80 percent; and the weight ratio of hexazinone to ametrex, atrazine, simazine or cyanazine is 1:20 to 20:1. The weeding combination is used for preventing and controlling weeds of orchards, forests, sugarcane fields or waste lands, compared with the single formulation, the preventing and controlling effect of the weeding combination is obviously improved, the application amount of pesticide can be reduced, so that the pesticide application cost is reduced, and the adverse effect on the environment by pesticide is reduced; and the service life of each single formulation can be prolonged, the use spectrum is enlarged, and the weeding combination has great significance to the overall management of vital hardiness problem of pesticide.

A mixture of diuron with mesotrione optionally containing other herbicides such hexazinone is disclosed as useful for controlling undesired vegetation. Also disclosed is a herbicidal composition comprising diuron, mesotrione and optionally other herbicides such as hexazinone and at least one additional component selected from the group consisting of surfactants, solid diluents and liquid diluents. Further disclosed is a method of controlling undesired vegetation comprising applying to the locus of the vegetation a herbicidally effective amount of the mixture.

The invention discloses inactivating chemical for eucalyptus stumps and a using technology. The inactivating chemical for the eucalyptus stumps comprises a component A and a component B, wherein the component A comprises, by weight, 5-10 parts of hexazinone and 5-10 parts of oxyfluorfen; the component B comprises, by weight, 35-45 parts of trichlopyr, 10-25 parts of picloram and 10-25 parts of sulfometuron methyl. The using technology includes the steps of stump treatment and chemical using. The inactivating chemical for the eucalyptus stumps can be used for effectively preventing water and soil loss, improving soil fertility and the soil structure and improving the productivity of forest land.

The invention discloses a weeding composition containing terbuthylazine and hexazinone and application of the weeding composition. The composition takes terbuthylazine and hexazinone as active components, and the mass ratio of terbuthylazine to hexazinone is (1-90): (1-90). The weeding composition disclosed by the invention has an obvious synergism effect and is suitable for removing various weeds in a corn field. By the use of the terbuthylazine and hexazinone composition, the medicinal effect and the prevention and treatment effect are mainly achieved. According to the composition, the medicine using amount is obviously reduced, the prevention and treatment range is expanded, and the economical cost is lowered; meanwhile, the residue amounts of medicines in agricultural products and the environment can be also reduced, and the drug resistance of weeds is delayed; the service life of the weeding composition is prolonged; the weeding composition has important economical, environment-protecting and ecological significances.

The invention relates to a weedicide for orchards and forest lands, and relates to a weedicide composition. The weedicide composition comprises hexazinone and glyphosate which serve as active ingredients. The hexazinone, the glyphosate and corresponding auxiliary ingredients which serve as raw materials are mixed fully to prepare corresponding formulations which have different forms and can be used, such as wettable powder, soluble powder, soluble granules or soluble liquid and the like. The invention has the advantages that: the weedicide composition has an obvious synergistic effect, perennial lianas, undershrub weeds and broadleaf weeds can be weeded, annual and biennial weeds also can be weeded, a weeding spectrum is enlarged, the weeding quick action is improved, and the dose and production cost of the weedicide are reduced.

The invention discloses a method for reconstructing an Australia nut forest by a eucalyptus forest. According to the method, eucalyptus stumps are drilled, paraquat is sprayed after the eucalyptus stumps grow out new branches and leaves, chlorenchyma of the new branches and leaves rapidly absorb the paraquat, the new branches and leaves are died, hexazinone is sprayed onto the eucalyptus stumps, metabolic disorders of the eucalyptus stumps are achieved, the eucalyptus stumps can be killed under double actions of the paraquat and the hexazinone, urea and slat serve as rot agents, the concentration of the urea and the slat of the eucalyptus stumps and eucalyptus root systems is excessive, a protein structure is broken, the eucalyptus stumps and the eucalyptus root systems are further burnt under the conditions of high salt and ammonia and strong base, the eucalyptus stumps are poisoned, rotting of the eucalyptus stumps and the eucalyptus root systems is accelerated, a corrosion promotingagent is added, protein synthesis of the eucalyptus stumps is further interfered, rotting of the eucalyptus stumps and the eucalyptus root systems is promoted, compound fertilizers and leaf fertilizers are reasonably applied onto the planted Australia nut forest, and premature senescence of Australia nut trees can be effectively avoided.

The invention discloses a hexazinone cleaning production technology. According to the technology, ethanol, lime nitrogen, cyclohexylamine, dimethylamine, dimethyl sulfate, sodium and phosgene are taken as main raw materials, a series of chemical reactions are carried out in a solvent, and then desolventizing and concentrating, crystallization separation and drying are carried out so as to obtain afinished product of hexazinone. The technology has the advantages that solvent extraction is omitted, the reaction process is reduced, the efficiency is improved, the energy consumption is saved by 10%, and meanwhile, the conversion rate is increased by 5%; the waste water quantity is greatly decreased, a special reactor is used in the cyclization process, the use of dimethylamine is reduced, sothat the phenomenon that great troubles are brought to removal of dimethylamine in the solvent and recovery of the solvent due to the fact that dimethylamine is dissolved in the solvent can be avoided, the severe pollution of dimethylamine to the environment is reduced, the quality of the solvent is guaranteed, and the content of active compounds of hexazinone is qualified, namely, the content ofthe active compounds of hexazinone is greater than or equal to 98%; and the use of a lot of water and dimethylamine is saved, so that the production cost is greatly lowered.

The method discloses a preparation method of nano silver colloid and a method for detecting hexazinone by using the silver colloid. The preparation method comprises the following steps: mixing hexazinone solutions in different concentrations with nano silver colloid, performing centrifugal separation, and testing with a laser Raman spectrometer to obtain an SERS spectrogram of the hexazinone; acquiring a relation between the hexazinone Raman spectrum absorption strength with certain wave number and the concentration, and establishing a mathematic relation between the Raman spectrum absorptionstrength and the hexazinone concentration; testing the hexazinone solution with unknown concentration by using the laser Raman spectrometer, and calculating the hexazinone concentration according tothe mathematic relation between the hexazinone Raman spectrum absorption strength with certain wave number and the hexazinone concentration. The method disclosed by the invention solves the problems of high cost, multi-step separation of a sample and the like in existing hexazinone detection, and has the advantages of easiness in operation, high sensitivity, remarkable saving of economic and timecosts and thus has a broad application prospect.

The invention discloses a system and method for synthesizing hexazinone by continuous pipeline reactions, and relates to the hexazinone synthetic method field. The system includes a first solution tank, a first material transferring pump, a filter, a shell-and-tube heat exchanger, a pipeline reactor, a second solution tank, a second material transferring pump, an evaporator, a neutralization washing kettle, a third material transferring pump, a condenser, and a removed solvent receiving tank; the first solution tank is connected to the first material transferring pump through a pipeline; the first material transferring pump is connected to the filter through a pipeline; the filter is connected to the shell-and-tube heat exchanger through a pipeline; the shell-and-tube heat exchanger is connected to the pipeline reactor through a pipeline; the second solution tank is connected to the second material transferring pump through a pipeline; the second material transferring pump is connectedto the pipeline reactor through a pipeline; the pipeline reactor is connected to the evaporator through a pipeline; the evaporator is connected to the neutralization washing kettle through a pipeline; the third material transferring pump is connected to the neutralization washing kettle through a pipeline; the condenser is connected to the evaporator through a pipeline; and the removed solvent receiving tank is connected to the condenser through a pipeline.

The invention relates to preparation of a hexazinone granule and an application technology. The prepared hexazinone granule can be used and transported conveniently and can be applied to weeding for forests, nurture young forests, clear obstacles and weed in places of airports, railways, industrial areas, and the like. Meanwhile, the hexazinone granule can also be applied to weeding in fields of economic crops such as bananas, sugarcanes, and the like.

The invention belongs to the field of pesticides and relates to a hexazinone, diuron and ametryn compound weedicide. The weeding composition comprises hexazinone, diuron and ametryn, wherein the weight ratio of the hexazinone to the diuron to the ametryn is (75-150): (75-300): (150-600). After three components are blended, weeding activity is improved in certain extent compared with each single dosage after the three components are blended, a weeding spectrum is expanded, a combined effect to the tested weeds is a synergistic effect after three drugs are blended, and the hexazinone, diuron and ametryn compound weedicide can be applied to preparation of a weedicide used for preventing and removing weeds in sugarcane fields.

A mixture of diuron with topramezone optionally containing other herbicides such hexazinone is disclosed as useful for controlling undesired vegetation. Also disclosed is a herbicidal composition comprising diuron, topramezone and optionally other herbicides such as hexazinone and at least one additional component selected from the group consisting of surfactants, solid diluents and liquid diluents. Further disclosed is a method of controlling undesired vegetation comprising applying to the locus of the vegetation a herbicidally effective amount of the mixture.

In order to solve the problems of side reaction and difficulty in inhibiting side reaction in the existing weedicide hexazinone preparation method, the invention discloses a new hexazinone preparation method which comprises the following steps: 1. reacting guanidine and cyclohexylamine so that the ester group on the guanidine is aminolyzed to generate an intermediate guanido urea; 2. reacting the intermediate guanido urea with phosgene under the action of an acid-binding agent so that the intermediate guanido urea is cyclized to generate hexazinone; and 3. cooling the mixture obtained in the step 2 to room temperature, carrying out vacuum filtration, washing, washing the mother solution with water, desolventizing under reduced pressure, adding petroleum ether to crystallize, filtering and drying to obtain the hexazinone crystal. The preparation method has the advantages of simple steps, no side reaction, high yield and low cost, and can obtain the high-purity hexazinone.

The present invention relates to a method for recovering dimethylamine hydrochloride from industrial wastewater, and the method for recovering the dimethylamine hydrochloride comprises the following steps: 1) adjusting the pH of the industrial wastewater with an acid to 7; 2) distilling the industrial wastewater treated by the step 1) under reduced pressure to separate an organic matter and water;3) dissolving the organic matter in an organic solvent and cooling to 10 to 15 DEG C to precipitate THE dimethylamine hydrochloride FROM the organic matter; AND 4) centrifugally separating a mixturetreated in the step 3), and drying to obtain the high purity dimethylamine hydrochloride. The method has simple process and mature process, is suitable for industrial utilization, and can be used forthe treatment of high-salt wastewater of hexazinone or even other industries.

A herbicidal composition containing hexazinone and an alkylene carbonate.

The invention discloses a weeding composition containing hexazinone and imazapyr and application of the weeding composition. The composition has a remarkable synergistic effect through compounding of the hexazinone and the imazapyr. The composition can be used for controlling and eliminating annual and perennial weeds one time and has excellent control effects on deep rooting plants, vine plants, bushes and the like, a weeding spectrum is expanded, the insecticide resistance of main weeds as well as the resurgence of secondary weeds are delayed, the service life of insecticides is prolonged, and environmental pollution is lowered. The weeding composition has the important economical, environmental and ecological significance.

The invention relates to herbicide special for a sugarcane field and a preparation method of the herbicide, and belongs to the technical field of pesticide preparation. The herbicide is prepared from the following raw materials in parts by weight: 20 to 26 parts of acetochlor, 10 to 18 parts of diuron, 8 to 16 parts of hexazinone, 7 to 15 parts of ethoxysulfuron, 3 to 7 parts of topramezone and 1 to 5 parts of an auxiliary. The preparation method comprises the following steps: mixing the raw materials, performing stirring reaction at the stirring speed of 260 to 300r / min for 40 to 50 minutes, and adjusting the pH value of the reaction to11 to 12; heating to 40 to 46 DEG C at the heating speed of 5 to 10 DEG C / min, keeping the temperature for 45 minutes, cooling to normal temperature, thereby obtaining a finished product. The herbicide is obvious in effect; an ideal effect can be achieved by one-time herbicide use, and the preventing effect is 95 percent or more; the herbicide is safe to sugarcanes and environmentally friendly; the preparation technology is simple and low in cost.

The invention provides a sterilant herbicide. The effective constituents in the herbicide are hexazinone and glyphosate, the weight ratio of the hexazinone to the glyphosate is 1:1.5-15, the total weight of the hexazinone and the glyphosate accounts for 10% to 90% of the total weight of the herbicide, and the balance is pesticide assistants. The sterilant herbicide is used for controlling perennial vines, undershrub weeds and woody plants of wastelands, railways and forest-fire-prevention isolation belts and controlling annual and perennial weeds. Pesticide efficacy experiments when the hexazinone and the glyphosate are compounded show that the complementarity of the effective constituents is mainly shown that the weed-and-miscellaneous-shrub pesticide resistance generated when a single herbicide is used for a long time is avoided, the herbicide controlling spectrum is amplified, the using rate of the herbicide is increased, the dosage is reduced, and the fast-acting property and the persistence of the herbicide are improved. In this way, when the hexazinone and the glyphosate are compounded, the synergistic effect is remarkable, and the persistence period is long.

The invention belongs to a modified weeding composition as well as a preparation method and an application thereof. The modified weeding composition is a mixture of a compound (A) and diuron, effectively removes annual gramineous weeds and broadleaf weeds in cane fields, has higher prevention effect than singly using the single compound (A) or compound (B) and greatly reduces the consumption of various active substances.

A herbicidal composition containing hexazinone and an alkylene carbonate.

The invention discloses a synergistic herbicide composition containing triclopyr and hexazinone and application thereof. In the herbicide composition, the triclopyr and the hexazinone are taken as the main active ingredients; and the mass ratio of the triclopyr to the hexazinone is 1-75: 1-75. The herbicide composition can be used for preparing herbicide for killing weeds in a woodland or non-cultivated land. Compared with single-composition herbicide, the herbicide composition has a broad herbicide spectrum and acts for a long time on the premise of improving herbicide effect, is safe for the forests and the afterculture crops, and particularly has an obvious effect of controlling various graminaccae, broadleaf weeds and undershrub in the woodland or the non-cultivated land.

The invention relates to the technical field of plant germination inhibition, in particular to a germination inhibitor, a preparation method and a use method thereof. The germination inhibitor comprises Juglans mandshurica extract solution, nonanoic acid, hexazinone and abscisic acid. The mass ratio of Juglans mandshurica extract solution, nonanoic acid, hexazinone and abscisic acid is (30-50): (3-5): (5-10): (0.5-1). The invention has the advantages of high germination inhibiting efficiency, non-toxic environmental protection, convenient use, saving a lot of cutting and shrub work, saving labor and time, and lower treatment cost, and is a more economical, safer and effective method for treating oak stumps, and can be popularized and applied.

The invention discloses a hexazinone crystallization reaction kettle, comprising a reaction kettle. A neutralization water-washing kettle is arranged on the right side of the reaction kettle. A desolvation kettle is arranged on the right side of the neutralization water-washing kettle. A crystallization kettle is arranged on the right side of the desolvation kettle. Stirrers are mounted on upper end surfaces of the reaction kettle, the neutralization water-washing kettle, the desolvation kettle and the crystallization kettle respectively. The hexazinone crystallization reaction kettle is simple in structure, clear and understandable in construction and convenient to use, and a product yield is high. Toluene can be effectively recovered through a toluene dehydration kettle and reutilized, atoluene-petroleum ether mixture solvent recovered by a distillation kettle can be fed into the desolvation kettle for reuse, and recovery of a plurality of solvents effectively reduces the productioncost. In addition, the stirrers in the reaction kettle, the neutralization water-washing kettle and the desolvation kettle accelerate mixing and reaction to increase the production efficiency. The stirrer in the crystallization kettle is used for breaking crystals, facilitating discharging. The hexazinone crystallization reaction kettle is high in degree of structure integration and simple to operate and deserves promotion.

The invention relates to a herbicide composition used along a railway and application of the herbicide composition. The active ingredients of the herbicide composition disclosed by the invention are glyphosate and salts thereof (or glufosinate-ammonium and salts thereof), hexazinone and triclopyr or salts or esters thereof. The composition of the herbicide composition disclosed by the invention is strictly selected in a formula and particularly shows an extremely good synergistic effect, and compared with a single agent, the mixed composition has the advantages that the weeding effect is obviously improved, the weeding spectrum is expanded, the weeding speed is increased, and the use dosage of the herbicide is reduced, so that the pesticide cost and the influence degree on the environment are reduced. Under the condition of reasonable application of the herbicide composition, effective components of the herbicide composition contained in water flowing into a crop field along a railway are safe to corn, wheat and the like, and are low in toxicity to aquatic organisms and warm-blooded animals.

The invention relates to a paraquat and hexazinone weeding composition and an application thereof, and belongs to the field of pesticide. The weeding composition consists of paraquat and hexazinone, wherein the mass ratio of paraquat to hexazinone is (1-30):(20-60). According to the weeding composition, paraquat and hexazinone within a specific proportioning range are compounded, so that the resistance of partial weeds to paraquat is reduced, and remarkable synergism effect after compounding is achieved. According to the weeding composition, the use amount of paraquat is reduced, and by adopting non-water formulations such as soluble powder, wettable powder and water dispersing granule, the security in dosage is greatly improved. The weeding composition provided by the invention can be applied to no-tillage land weeding in bare places, frosts, fruit gardens and lands for dry crops such as soybean, wheat, rape and corn, or weeding in line intervals of corn and sugarcane seedlings. The invention further provides a preparation method of the wettable powder, the soluble powder, the water dispersing granule and suspension of the paraquat and hexazinone weeding composition.

The present invention is a method for transforming macadamia nut forests in eucalyptus forests. Holes are drilled in eucalyptus stumps. After the eucalyptus stumps grow new branches and leaves, paraquat is sprayed. The green tissue of new branches and leaves quickly absorbs paraquat to make them die, and then sprays them on the eucalyptus stumps. Hexazinone, which leads to its metabolic disorder, can effectively kill eucalyptus stumps under the dual effects of paraquat and hexazinone; using urea and table salt as corrosive agents will lead to excessive concentrations of urea and salt in eucalyptus stumps and their roots , destroy the protein structure, and make the eucalyptus stump and its root system under the conditions of high salt, high ammonia and strong alkali, further burn and poison the eucalyptus stump, and accelerate the decay of the eucalyptus stump and its root system; then add a decay accelerator , to further interfere with the protein synthesis of eucalyptus stumps, and at the same time promote the rot and deterioration of eucalyptus stumps and their root systems; reasonable application of compound fertilizers and foliar fertilizers to planted macadamia nut trees can effectively prevent premature aging of macadamia nut trees.