67 results about "Bromoxynil" patented technology

The invention discloses a flucarbazone-Na compounded herbicide which comprises an active component I (flucarbazone-Na), an active component II and auxiliary components, wherein the active component II is one or a combination of several of mesosulfuron methyl, isoproturon, chlortoluron, pyroxsulam, Clodinafop-propargyl, carfentrazone-ethyl, tribenuron-methyl, fluroxypyr, methoxone, 2,4-D-butyl ester, dicamba, bromoxynil, thifensulfuron methyl, amidosulfuron, bensulfuron-methyl, flumetsulam, fluoroglycofen-ethyl and florasulam; the auxiliary components comprise an auxiliary agent and also comprise one of a filler and a solvent; the auxiliary agent is one or a combination of two of an emulsifying agent, a dispersant, a wetting agent, a disintegrant, an agglomerant, an antifreezing agent and a thickening agent; the mass sum of the active component I (flucarbazone-Na) and the active component II is 1%-85% of the total mass of the flucarbazone-Na compounded herbicide; and the mass ratio of the active component I to the active component II is (1:20)-(20:1). The flucarbazone-Na compounded herbicide disclosed by the invention is a novel herbicide for preventing and removing weeds in a wheatland.

The invention discloses a mesosulfuron-methyl compound herbicide which consists of mesosulfuron-methyl as active ingredient I, active ingredient II and auxiliary ingredients; the active ingredient II is the combination of one or more of flucarbazone-Na, isoproturon, chlortoluron, pyroxsulam, 2-methyl-4-chlorophenoxy acetic acid, 2,4-D butyl ester, dicamba, bromoxynil, amidosulfuron, bensulfuron-methyl, flumetsulam, fluoroglycofen-ethyl and florasulam; the auxiliary ingredients consists of adjuvant and one of filler and solvent, and the adjuvant is the combination of one or more of emulsifying agent, dispersing agent, wetting agent, disintegrant, binding agent, antifreezing agent and thickening agent; the sum of the weight of the mesosulfuron-methyl as the active ingredient I and the weight of the active ingredient II is 1 to 85 percent of the total weight of the mesosulfuron-methyl compound herbicide; and the weight ratio of the active ingredient I to the active ingredient II is 1:20 to 20:1. The mesosulfuron-methyl mixed herbicide is novel herbicide for wheatlands.

The invention provides a degradation strain for eliminating residual bromoxynil, belonging to the field of biological high technology. The adopted bacterial strain is a gram staining reaction negative strain MXX-04 which is identified to be paracoccussp. The main biological properties are G-, short rod shape, no spores, no motility and positive oxidase and catalase. The strain provided by the invention can grow by taking bromoxynil as a unique nitrogen source and mineralize the bromoxynil. Under the condition of a shake flask in a laboratory, the strain can degrade 95.3% of 100mg/L bromoxynil within 24 hours, thus the problem that bromoxynil is hard to degrade biologically in the environment is solved.

The invention discloses a production technology for synthesizing bromoxynil, and relates to the technical field of chemical industry. Cyanophenol is subjected to bromination reaction to obtain bromoxynil as a raw material after being synthesized. The production technology has the beneficial effects that the technology is simple and convenient to prepare, environment-friendly, free of pollution, available in raw material, less in equipment investment, high in purity, convenient to operate, good in use effect of prepared bromoxynil, and safe and reliable.

The invention relates to a preparation method of 2-fluoro-5-bromoxynil. The 2-fluoro-5-bromoxynil as a medicine intermediate is obtained by using 4-bromo-2-fluorobiphenyl as a raw material through three-step finishing synthesis of brominating diazonium, cyaniding and brominating, and the total yield of the method reaches 39.7 percent. In the cyaniding process, cuprous cyanide with lower toxicity is adopted to replace virulent sodium cyanide or potassuim cyanide; and in the brominating process, environment-friendly NBS and dibromohydantoin are adopted as brominating agents. The pollution and the toxicity of the whole process are greatly reduced. The preparation method has the advantages of cheap raw materials and mild reaction condition, thereby being an optimal process for synthesizing the 2-fluoro-5-bromoxynil.

The invention discloses a weeding composition for oat fields and a preparation and application method of the weeding composition. The composition comprises the active ingredients as follows: agroxone, bromoxynil and tribenuron-methyl, and the mass ratio of agroxone, bromoxynil and tribenuron-methyl is 1:1: (0.02-0.06). When in use, the composition is soluble in water, is used for stalk and leaf spraying during the 2-3 leaf stages of oat seedlings, can effectively prevent and control broad-leafed weeds in the oat fields, has special effects on chenopodium album and salsola collina, and has the characteristics of strong selectivity, high prevention effect, good security and few residues.

The invention discloses a synergistic herbicidal composition containing rimsulfuron and bromoxynil, which comprises the following active ingredients: rimsulfuron and bromoxynil in mass ratio of 1-70:1-50. Compared with single-component herbicides, the synergistic herbicidal composition delays the resistance of weeds, has a broad herbicidal spectrum and acts for a long time on the premise of improving herbicide effect, is safe for corn and afterculture crops, and particularly has an obvious effect of controlling various gramineae weeds and broad leaf weeds in corn fields. The synergistic herbicidal composition can be used for preparing herbicides for controlling postemergence weeds in the corn fields.

The invention relates to a complex formulation herbicide for protective cultivation of corn field, which is characterized in that the raw materials concretely comprises the following components by weight ratio: atrazine 10-15%, bromo benzonitrile 4-6%, pendimetalin 12-16%, thifensulfuron methyl 2%-4%, methanol 20-35%, Runong 160 5-8%, glycerol 1-4%, silicone oil 0.02-0.06%, sodium alginate 0.5-0.8% and deionized water which is added up to 100%. The herbicide has the advantages of good weeding effect, wide weeding spectrum, harmless and safety to the protective cultivation of corn field, etc.

A herbicide composition includes a fenoxaprop ester and a weak acid buffer system. The buffer system maintains the herbicidal composition at a pH in the range of 4 to 8. In one non-limiting embodiment, the fenoxaprop ester is fenoxaprop ethyl. The buffer system can include an amine-containing material, such as a tertiary amine. The herbicide composition can include other herbicides, such as weak acid herbicides, for example pyrasulfotole, bromoxynil, and/or bromoxynil esters and can include one or more safeners.

The invention discloses a new synthetic method for an Olaparib midbody 2-fluoro-5-[(3-oxo-1(3H)-isobenzofurylidene) methyl] benzonitrile. The method comprises: taking 3-methylene isobenzofuran-1(3H)-ketone and 2-fluoro-5 bromoxynil as reaction raw materials, and carrying out a coupling reaction under the catalysis of metal palladium compounds in an alkaline condition, thereby obtaining the 2-fluoro-5-[(3-oxo-1(3H)-isobenzofurylidene)methyl] benzonitrile, wherein a reaction yield is over 70%. Compared with an original process route, use of strong acid and strong base such as sodium methylate, methanesulfonic acid, and the like with strong corrosion to equipment is avoided, reaction steps are shortened, operation is more convenient, impact force on environment is reduced, and cost is reduced.

The invention discloses a synergistic herbicidal composition containing picloram and bromoxynil and application thereof. In the herbicidal composition, the picloram and the bromoxynil serve as main active ingredients, and the mass ratio of the picloram to the bromoxynil is 1-80:1-80. The synergistic herbicidal composition can be applied to preparation of post-emergence herbicides for a wheat field, particularly preparation of herbicides for controlling broadleaf weeds in the wheat field. Compared with a single-component herbicide, the herbicidal composition delays resistance of weeds, has broad herbicidal spectrum and acts for a long time on the premise of improving herbicide effect, and is safe for wheat and afterculture crops.

The invention relates to a process for synthesizing 2-cyanogroup 3-fluorophenylboronic acid. According to the method, 3-bromofluorobenzene is used as a raw material, and takes a reaction with LDA and dimethylformamide in a tetrahydrofuran solvent to obtain 2-fluorine 6-bromobenzaldehyde; then, the 2-fluorine 6-bromobenzaldehyde and hydroxylamine hydrochloride take a reaction at 100 DEG C to obtain 2-fluorine 6-bromoxynil; finally, triisopropyl borate is added into the intermediate; n-butyllithium is dropwise added at -70 DEG C; reduced pressure distillation is performed to obtain 2-fluorine 6-bromophenylboronic acid. The process provided by the invention has the advantages that the operation is simple and convenient; the raw material can be easily obtained; the yield is high.

The invention discloses a bromoxynil degrading bacterium and application thereof, and belongs to the field of high biotechnologies. A bacterial strain of the bromoxynil degrading bacterium is a Gram staining reaction negative bacterium BX03, and belongs to Burkholderia bacterial genus (Burkholderia sp.) is identified as Burkholderia sp.. The bromoxynil degrading bacterium is mainly biologically characterized in that the bromoxynil degrading bacterium is Gram-negative, is in the shape of a short spar and is free of spores, and flagella grow at the ends of the bromoxynil degrading bacterium. Bromoxynil can be used as the only carbon source and the only nitrogen source to grow the bacterium, and the bacterium can be mineralized. The bromoxynil degrading bacterium and the application have the advantages that 95% of 100mg/L of the bromoxynil can be degraded by the bacterial strain within 24 hours under a flask shaking condition in a laboratory, and accordingly the problem of difficulty in biologically degrading bromoxynil during waste water treatment can be solved.

The invention provides an enhanced weed-killing composition, which comprises two active ingredients: an active ingredient a and an active ingredient b. The active ingredient a is glyphosate or a salt compound of the glyphosate and the active ingredient b is a compound having a structure which is represented by a formula (1), wherein R is H, Na, K or -C(O)-Z, Z is C3 to C7 alkyl and X is Br or I; and the weight ratio of a to b is 1-90:90-1. The active ingredient b is optimally bromoxynil (also known as 3,5-dibromo-4-hydroxy-benzonitril, bromoxynil-octanoate or bromoxynil-enantate) or a salt of the bromoxynil, or optimally ioxynil (also known as 3,5-diiodo -4-hydroxy- ioxynil, ioxynil-octanoate or ioxynil-enantate) or a slat of the ioxynil.

The invention provides a synthetic method of a cyano-biphenyl type liquid crystal material, which is characterized in that a Grignard reagent prepared from 4'-alkyl (or alkoxy)-4-bromobenzene (or biphenyl) generates coupling reaction with 4-bromoxynil in a tetrahydrofuran solvent at a room temperature under the existence of catalyst palladium acetate, ligand triphenylphosphine and cocatalyst zinc bromide. After reaction liquid is cooled and is added with diluted hydrochloric acid for layering, a water phase is extracted by ethyl acetate; and after being washed and solvent-evaporated, a collected organic phase is recrystallized to obtain a pure product. The synthetic method has the beneficial effects that as the synthetic reaction is carried out at a room temperature without extremely-low temperature condition, the equipment investment and the production cost are reduced; and the operation is simple, a used raw material is low in cost, is easily obtained and is simple to treat after reaction, and after the product is simply recrystallized and purified, the yield reaches above 70 percent, therefore, the synthetic method is a practical and feasible synthetic route for the large-scale industrial production of the cyano-biphenyl type liquid crystal material.

The invention discloses a herbicidal composition containing fensulfenil and bensulfuron-methyl and an application thereof. The mass ratio of oxalonitrile is 1:60~60:1. The herbicidal composition of the invention can be used for post-emergence weeding in paddy fields, especially for controlling gramineous and broad-leaved weeds in paddy fields and has remarkable effects. Compared with a single agent, the herbicidal composition of the present invention delays weed resistance, has a wide herbicidal spectrum, long duration of action and is safe to rice and subsequent crops under the premise of improving the efficacy of a single agent.

The invention discloses a herbicide, comprising the following components by weight: 6 to 10 parts of acetochlor, 7 to 15 parts of carfentrazone-ethyl, 3 to 8 parts of bensulfuron methyl, 6 to 15 parts of bromoxynil and 80 to 100 parts of water. The herbicide disclosed in the invention can be applied when weeds grow in farmland and can reduce pesticide pollution to crops; moreover, the herbicide can effectively kill a variety of broad-leaf weeds like Stellaria media, rice flower and Calystegia sepium and cyperaceae weeds and has good versatility.

The invention relates to a weeding composition, in particular to a weeding composition for preventing and killing weeds in corn fields. The weeding composition contains three active components which are topramezone, bromoxynil and bentazone, and the matching range of the topramezone, bromoxynil and bentazone by weight is (1-10):(1-100):(1-100). The three components are different in weeding mechanism, and the reagent obtained after compounding combines advantages of the three single reagents, achieves a better weeding effect, has an obvious synergistic effect compared with single reagent utilization, reduces dosage and cost and is safer; the weed killing spectrum is enlarged, and besides the gramineous weed killing effect is excellent, the weeding composition has good preventing and controlling effects on malignant broad leaf weeds and cyperaceae weeds; herbicide resistance generated due to utilization of the single reagent can be relieved.

The present invention relates to a lawn weedicide and its preparation method. The composition of said lawn weedicide includes (by wt%) 1-50% of alpha-bifluoropropanoic acid, 1-20% of fenchlorazole, 5-10% of synergistic agent and the rest is adjuvant. Its preparation method includes the following steps: synthesizing monofluoride, synthesizing bifluoride, dissolving three kinds of isomer compounds in acetylacetone, separating to obtain alpha-bifluroropropanoic acid solution, mixing alpha-bifluoropropanoic acid, fenchlorazole, bromoxynil and adjuvant, stirring them uniformly so as to obtain the invented weedicide.

The invention discloses an oat field weeding composition containing thifensulfuron-methyl and preparation and application methods thereof. Active components of the composition comprise 2-methyl-4-chlorophenoxyacetic acid, bromoxynil and the thifensulfuron-methyl; the mass ratio of the 2-methyl-4-chlorophenoxyacetic acid to the bromoxynil to the thifensulfuron-methyl is equal to (1 to 3) to (1 to 3) to (0.1 to 0.3). The weeding composition disclosed by the invention is dissolved into water in a utilization process and is sprayed on stems and leaves at a 3 to 4 leaf period of oat seedlings; theweeding composition can be used for effectively preventing and controlling broadleaf weeds of an oat field, such as chenopodiaceae and amaranthus retroflexus. The weeding composition provided by the invention has the characteristics of strong selectivity, high prevention effect, good safety and few residues.

The invention relates to a weedicide composite preparation for preventing and removing farmland weeds, in particular to a weedicde used for preventing and removing grassy weeds and broadleaf weeds in corn fields. The weedicide composite is a ternary weedicide mixture of active components of mesotrione, nicosulfuron and bromoxynil (or the salt of bromoxynil), wherein, the weight ratio between the mesotrione, the nicosulfuron and the bromoxynil (or the salt of the bromoxynil) is 1 to 50: 1 to 50: 1 to 50. The preventing effect of the composite is superior to the activity of weedicide by using exclusively, and unexpected synergism is obtained by combination; moreover, the weedicide composite has the positive influence in widening weed preventing and treating scope, reducing weedicide applying time, and decreasing weedicide applying cost, which is safe for the growth of corn in culture and after crops.