18 results about "Sulfentrazone" patented technology

The invention relates to a synergistic herbicidal composition for controlling undesired vegetation or weeds for longer period in plants, more particularly to a synergistic composition comprising pyroxasulfone; sulfentrazone; and at least one additional herbicide selected from clomazone, diclosulam and flumioxazin. The invention further relates to formulations and methods of controlling undesired vegetation with the composition and provides the advantages of enhanced efficacy, increased spectrum of activity, improved shelf life, improved plant vigour and yield.

The present invention relates to the field of pesticide preparation, and discloses a method for preparing a sulfentrazone intermediate and its application. The structure of the sulfentrazone intermediate is shown in Formula 1. The method includes: mixing a chloro-isoxazole, a metal sulfide and a thiosulfate for reaction to obtain the sulfentrazone intermediate. By using the thiosulfate and the metal sulfide to react with the chloro-isoxazole, the method effectively inhibits the generation of by-products, and at the same time greatly improves the product yield of sulfentrazone, having greater industrial application prospects.

A herbicidal composition comprising a 2,4-D analogue of formula I and a second compound selected from the group consisting of halauxifen, diclosulam, glyphosate, glufosinate, mesotrione, saflufenacil, sulfentrazone and trifludimoxazin and an agriculturally acceptable salt or ester thereof. A method of controlling undesired vegetation using the composition.

Provided are a herbicidal composition having excellent control effect on weeds and a method for controlling weeds. The herbicidal composition comprising one or more PPO-inhibiting herbicides selected from the group consisting of flumioxazin, flumiclorac-pentyl, lactofen, carfentrazone-ethyl, sulfentrazone, tiafenacil, trifludimoxazin, and a compound represented by the following formula (I):wherein X represents CH or a nitrogen atom, and Z represents CH or a nitrogen atom, and glufosinate or a salt thereof, wherein a weight ratio of the PPO-inhibiting herbicide to the glufosinate or a salt thereof is 1:150 to 1:700.

The present invention belongs to the field of pesticides, and specifically relates to a herbicidal composition and the use thereof. The composition comprises a herbicidally effective amount of an active ingredient A and an active ingredient B, wherein the active ingredient A is; and the active ingredient B is selected from one or more of the following compounds or acids / esters / salts thereof: diflufenican, picolinafen, fluridone, fenpyrazone, saflufenacil, flumioxazin, sulfentrazone or. The composition can effectively control problems of gramineous weeds, cyperaceous weeds, broadleaf weeds, etc., and exhibits characteristics of an expanded herbicidal spectrum, a reduced application dosage, the ability to produce a synergistic effect, effectiveness in controlling resistant weeds, etc.

The invention provides a novel sulfentrazone intermediate compound. The compound is simple, convenient and easy to control in synthesis; when the intermediate compound is used for preparing sulfentrazone, the process route is simple and convenient, the reaction condition is mild, the operation process is simple and convenient, the production cost is low, the technical problems of low chlorination selectivity and the like in the prior art are solved, the prepared sulfentrazone has relatively high purity and high yield, and the process route is greatly shortened.

The invention discloses a weeding composition containing sulfentrazone and pyroxasulfone and a use method of the weeding composition, the weeding composition comprises a sulfentrazone microcapsule and a pyroxasulfone microcapsule, the particle size of the sulfentrazone microcapsule is 10-20 microns, and the particle size of the pyroxasulfone microcapsule is 30-50 microns; the two kinds of capsules are distributed in an up-down double-layer mode in the preparation through a centrifugal layering technology. The upper-layer rapidly-released sulfentrazone can timely prevent and remove early-stage germinated weeds, and the lower-layer slowly-released pyroxasulfone continuously inhibits the growth of later-stage weeds, so that the whole-course protection of early-stage rapid weed control and later-stage long-acting weed suppression is realized, and the trouble of repeated prevention and removal of weeds in different growth stages is avoided; according to the invention, processing of multiple dosage forms and two treatment modes of stems, leaves and soil are supported, flexible adjustment can be realized according to crop types and weed conditions, the stability and dispersity of the pesticide are improved through reasonable matching of an auxiliary agent and a microcapsule wall material, and pesticide application parameters and dosage are controlled accurately, so that the pesticide effect is guaranteed, and the influence on crops and the environment is reduced.

The invention belongs to the field of pesticides, and particularly relates to a weeding composition and application thereof. The composition comprises an active component A and an active component B with effective weeding amounts, the active ingredient A is an active ingredient B, and the active ingredient B is selected from one or more of diflufenican, diflufenican, fluridone, toprazole fluridone, saflufenacil, flumioxazin and sulfentrazone. The composition can be used for effectively preventing and removing the problems of gramineous weeds, cyperaceae weeds, broadleaf weeds and the like; the herbicide composition has the characteristics of expanding the herbicide controlling spectrum, reducing the application amount, generating a synergistic effect, solving resistant weeds and the like.

The utility model relates to the technical field of mesosulfuron-methyl synthesis, and particularly discloses a mesosulfuron-methyl nitration reaction device, which comprises a reaction kettle, a feed inlet and a waste gas outlet are arranged on the top of the reaction kettle, a discharge port is arranged at the bottom of the reaction kettle, and a detachable sealing cover is installed on the discharge port through a threaded connection mode; a spiral propelling type stirrer is vertically arranged in the reaction kettle, the spiral propelling type stirrer comprises a stirring shaft and spiral blades that are continuously distributed along the stirring shaft from top to bottom, the distance between the outer edge of the spiral blade and the inner wall of the reaction kettle is 5-8 mm, a polytetrafluoroethylene coating with a thickness of 0.2-0.5 mm is coated on the surface of the spiral blade, and a motor is coaxially and fixedly connected to the driving stirring shaft on the top of the reaction kettle; through the cooperation of the spiral propelling type stirrer and the polytetrafluoroethylene coating, the gradient temperature control of the multi-stage variable-diameter cooling coil, the precise distribution of the 40-degree inclined atomizing nozzle, and the synergistic design of the pH closed-loop discharge control, the nitration reaction efficiency and the product purity are significantly improved.

The present invention discloses a herbicidal composition containing indaziflam and its application. The active ingredients are indaziflam and sulfentrazone, and the weight ratio of indaziflam to sulfentrazone is 6-1:1-6. The herbicidal composition of the present invention effectively complements the quick-acting property and long-lasting property, avoids the problem of rapid occurrence of weed resistance caused by the use of a single herbicide for control, delays the occurrence of weed resistance, and extends the service life of the herbicide. The actual herbicidal effect of the binary composition of the present invention is significantly better than the theoretical sum of the individual use, and has the effects of synergy, efficiency increase, reduction of the dosage, good selectivity, outstanding control effect on resistant weeds, and safety to crops. The use of a low dose of indaziflam can significantly reduce the dosage of sulfentrazone, reduce the use cost, is of great significance to the ecological environment protection, also improves the safety to crops, and has a very practical and wide application prospect.

The utility model relates to the technical field of waste acid cyclic utilization, and discloses a waste acid cyclic utilization device for sulfentrazone nitration reaction, which comprises a waste acid cyclic utilization device body, a filtering assembly and a stirring assembly, the waste acid cyclic utilization device body comprises a circulating box, the top of the circulating box is provided with a discharging structure capable of transporting materials, and the top of the circulating box is provided with a stirring assembly. The filtering assembly comprises a material injection opening, a hole is formed in the top of the circulating box, the material injection opening is fixedly installed in the hole in the top of the circulating box, the stirring assembly comprises a stirring tank, and the bottom of the stirring tank is fixedly connected with the bottom of the inner side of the circulating box, so that the purpose of filtering waste acid is achieved, and impurities in the waste acid are filtered and cleaned; the problem that holes of the device are blocked by impurities is solved, the use stability and flexibility of the device are improved, manual cleaning of the device is replaced, the reaction efficiency of the device to chemicals is improved, the working efficiency is improved, the device is stirred and mixed, and the use experience of the device is optimized.

The invention discloses a microencapsulated herbicide composition as well as a preparation method and application thereof, and belongs to the field of pesticide processing, the microencapsulated herbicide composition comprises 23-77.5% of herbicide active ingredients and the balance of pharmaceutically acceptable auxiliaries; wherein the herbicide active component is composed of sulfentrazone, clomazone and s-metolachlor, the invention discloses the herbicide compounded by ternary combination of sulfentrazone, clomazone and s-metolachlor for the first time, and the herbicide composition has high safety to small crops such as watermelons, peas, peppers and the like, has an excellent control effect on broad leaf and cyperaceae weeds, and can be widely applied to the field of weeding. Even if the dosage is high, the growth is not inhibited, the lasting period is as long as 60 days, weeds in the whole seedling stage are thoroughly controlled, and the pesticide application frequency is reduced.

A method for controlling weeds including a step of performing a spot treatment of at least one protoporphyrinogen oxidase (PPO) inhibitor in a cultivation area of soybean, corn, or cotton. The PPO inhibitor may include tiafenacil, flumioxazin, trifludimoxazin, sulfentrazone, lactofen, or fomesafen sodium. The weeds may include Amaranthus weeds, Kochia weeds, Ambrosia weeds, or Conyza weeds.

The present invention provides a process for the preparation of crystalline form SJDM-1 of sulfentrazone characterized by PXRD, DSC and FTIR and use of the prepared form to prepare the agrochemical compositions.

Described herein is an environmentally friendly process for preparing pure sulfentrazone having tank-mix compatibility which includes treating sulfentrazone with a base and isolating the pure sulfentrazone with an acid. Compositions containing the pure sulfentrazone are also included.

The application discloses a microcapsule suspension-suspension agent containing isoxaben and sulfentrazone, a preparation method and application thereof, and relates to the field of pesticides, and comprises isoxaben microcapsule suspension agent and sulfentrazone suspension agent mixed according to a mass ratio of 1:(0.1-10). The isoxaben microcapsule suspension agent comprises the following raw materials: isoxaben 5-50 parts by weight, solvent oil 2-10 parts by weight, oil-phase wall material 0.4-5 parts by weight, dispersant 1-8 parts by weight, water-phase wall material 0.1-1 part by weight and water 25-80 parts by weight. The sulfentrazone suspension agent comprises the following raw materials: sulfentrazone 5-50 parts by weight, dispersant 1-8 parts by weight and water 45-96 parts by weight. The dispersant is at least one of sodium lignosulfonate and polycarboxylate. The application can ensure that isoxaben and sulfentrazone are compounded, and the two can stably exist after being mixed, and meanwhile, the drawbacks of isoxaben drift and phytotoxicity in use are solved.

The invention relates to the technical field of pesticide herbicides, in particular to a double-component weeding composition containing saflufenacil and a preparation method of the double-component weeding composition, and preparation raw materials comprise sulfentrazone and saflufenacil; the mass ratio of the sulfentrazone to the saflufenacil is (1 to 100): 1. According to the invention, the saflufenacil is prepared into the microcapsule suspending agent, the sulfentrazone is prepared into the suspending agent, and then the suspending agent is compounded with the antifreeze agent and the thickening agent to obtain the microcapsule suspension-suspending agent type weeding composition, so that the phenomena of creaming and non-flowing caused by the failure of a dispersing agent due to the influence of a solvent on the sulfentrazone active compound are reduced; the hydrolysis risk caused by long-term storage of the saflufenacil can also be reduced.

The present disclosure provides a herbicidal composition comprising: pendimethalin in an amount ranging from 20% to 32% w / w; sulfentrazone in an amount ranging from 8% to 15% w / w; one herbicide selected from: metribuzin, chlorimuron ethyl, and imazethapyr, said one herbicide being in an amount ranging from 0.2% to 12% w / w; and one or more agrochemically acceptable excipients. The present disclosure further relates to a method for controlling unwanted vegetative herbs by applying an effective amount of said herbicidal composition and formulations thereof.