296 results about "Quinclorac" patented technology

The invention discloses a method for degrading the quinclorac organic pollutant based on catalysis of persulfate through load-type activated carbon. The method comprises the steps that the load-type activated carbon serves as a catalyst, the persulfate or disulfate serves as an oxidizing agent, and the quinclorac in waste water and soil is degraded through sulfuric acid free radicals formed in the reaction process. According to the method, the added load-type activated carbon can effectively catalyze the quinclorac to degrade the quinclorac at the room temperature, can be recycled and reused after the reaction, is wide in pH application range, is high in treating efficiency and simple in operation at the room temperature, and has great application prospects in the aspects of degrading the quinclorac organic pollutant.

The invention relates to a herbicide composite used in a paddy field. The active ingredient of the composite is formed by one or two of metamifop, bensulfuron-methyl, pyrazosulfuron, quinclorac, bentazone, bispyribac-sodium, 2-methyl-4-chloro-phenoxyacetic acid, penoxsulam and imidazolinone herbicides so as to form a binary herbicide composite or a ternary herbicide composite. The herbicide composite used in the paddy field can effectively remove various weeds in grass family, broad leaf weeds and cyperaceae weeds in the paddy field in a disposable way, and has special effects on cockspur grasses, moleplant seeds, crabgrass and the like which are difficult to be prevented in the directly-sown paddy fields.

The invention belongs to the field of pesticide and particularly relates to a sorghum field weeding composition containing biscarfentrazone-ethyl and application thereof. The sorghum field weeding composition comprises the effective weeding quantity of an active ingredient biscarfentrazone-ethyl and the effective weeding quantity of an active ingredient B. Please see the structural formula of the active ingredient biscarfentrazone-ethyl in the description. The active ingredient B is selected from one or more of HPPD inhibitor mesotrione and quinoline carboxylic acid quinclorac. The composition can effectively prevent and eliminate broad-leaf weeds and part of grassy weeds in a sorghum field and has the advantages of enlarging the weeding spectrum, reducing the application amount and being safe to crops.

The invention discloses a method for synthesizing and refining quinclorac. The synthesis method comprises the following steps of: preparing 7-chloro-8-methylquinoline by adopting m-chloro-o-toluidine and glycerol as raw materials; carrying out chlorination reaction on the 7-chloro-8-methylquinoline and chlorine to generate 3,7-dichloro-8-chloromethylquinoline; and finally oxidizing the 3,7-dichloro-8-chloromethylquinoline in concentrated sulfuric acid by concentrated nitric acid to obtain the quinclorac, wherein a chlorinating cocatalyst is added in the chlorination reaction, and an oxidizing cocatalyst is added in oxidation reaction. The synthesis method greatly improves reaction yield (larger than or equal to 65 percent) by using the chlorinating cocatalyst and the oxidizing cocatalyst and obtains a crude quinclorac product with higher content, and meanwhile, the quinclorac with high content (larger than or equal to 98 percent) is obtained by refining through using a one-step pressure kettle method. The process has the characteristics of simple and convenient operation, high yield, low cost, and the like.

The invention provides a cyhalofop-butyl-containing weed oil suspension composition, which comprises the following components: 1 to 15 percent of cyhalofop-butyl, 10 to 30 percent of quinclorac, 1 to 10 percent of emulsifying agent, 2 to 8 percent of wetting dispersing agent, 0.1 to 5 percent of suspension stabilizer, 0 to 5 percent of antifreezing agent, 0 to 0.2 percent of organosilicon defoaming agent and the balance of vegetable oil. The cyhalofop-butyl-containing weed oil suspension composition has the obvious synergistic effect, and the prevention and control effect on weed caper euphorbia seed in a paddy field, such as cockspur grass and the like, is superior to that of a single-dose medicament of the cyhalofop-buty and the quinclorac. The weed oil suspension composition improves the prevention and control effect, enlarges weed control spectra, retards weed resistance and reduces application amount and application cost, and is safe for crops.

The invention discloses a process for preparing Quinclorac artificial semiantigen, artificial antigen, specific antibody and use thereof, wherein the preparation comprises, subjecting the dichloroquine (3,7-dichlorine-8-quinoline carboxylic acid) to sulfoxide chlorinated acylation, reacting with reanal and aminocaproic acid, thus obtaining semiantigen 4-(3,7-dichlorine-8-quinolineformyl) reanal or 6-(3,7-dichlorine-8-quinolineformyl) aminocaproic acid (QB or QC).

The invention discloses a cyhalofop-butyl-containing pesticide composition, which comprises common additives, cyhalofop-butyl and quinclorac, wherein active ingredients are the cyhalofop-butyl and the quinclorac; the mass-part ratio of the cyhalofop-butyl to the quinclorac is 1:1-1:50; and the accumulative mass percentage of the active ingredients in a preparation is 1 to 70 percent. The cyhalofop-butyl-containing pesticide composition is applied to the prevention and control of farmland weeds, particularly annual gramineous weeds in paddy field. The composition has the prevention-control effect obviously improved compared with that of single agents, and reduces the using dosage of pesticide and cost.

The invention discloses a gibberellic acid-containing herbicide composition and a preparation method as well as application thereof. The gibberellic acid-containing herbicide composition is prepared from the following components in parts by weight: 0.01 to 99 parts of gibberellic acid and 1 to 90 parts of herbicide; the herbicide is one or a mixture of at least two of cyhalofop-butyl, penoxsulam, metamifop, bispyribac-sodium, quinclorac, anilofos, pretilachlor, butachlor, mefenacet, bensulfuron methyl, pyrazosulfuron-ethyl, pyriminobac-methyl, bentazone, mesotrione, halosulfuron-methyl, metolachlor, pendimethalin, oxadiazon, oxadiargyl, MCPa, fluroxypyr and diflufenican. The gibberellic acid-containing herbicide composition has synergism to weed prevention and control, the weed control efficiency is improved, the safety of the herbicide to crops can be improved, the herbicide phytotoxicity problem in agricultural production is fundamentally solved, and meanwhile the crop yield is improved by adjusting crop growth.

The invention relates to compound herbicide for controlling paddy rice weed of Chinese sprangletop and barnyard grass. The compound herbicide can control the paddy rice weed of Chinese sprangletop and barnyard grass. The active ingredient of the invention is R (+) 2 [4 (2 fluoro 4 cyanophenoxy) phenoxy], butyl propionate and 3, 7-dichloroquinoline-8-carboxylic acid. The invention deeply examines interaction effect of barnyard grass and Chinese sprangletop, field control effect, complementarity of weed control spectrum, applicable formulation and so on. Indoor biological test and field control test show that cyhalofop butyl and quinclorac are scientifically portioned, and relevant auxiliary agent is added, and cyhalofop butyl quinclorac compound is made after being processed a certain technology. The control effect for the paddy field weed Chinese sprangletop and barnyard grass of the compound is obviously higher than single agent. The compound improves the control effect, enlarges the weed control spectrum, delays weed resistance, and reduces the using of pesticide. The invention not only lowers the agricultural cost, but also is much safer to crops.

The invention describes a herbicide, O, O-demethyl-1-(2, 4-dichlorophenoxy)ethylphosphate (HW02), processing stems and leaves as well as weeding combination, containing an active compound and a compound selected from the compounds: tribenuron, thifensulfuron, methsulfuron, chlorsulfuron, bensulfuron, isoproturon, fluroxypyr, quinclorac, mefenacet ,alachlor, aetochlor, butachlor and metolachlor. The herbicide and its combination are applied to effectively prevent and cure various weeds in dry land, especially cornfield and rice paddy as well as garden, tea garden and lawn. It also describes their preparation and weed processing method as well as application to processing stems and leaves.

The invention discloses a method for catalytically oxidizing quinclorac, which takes m-chloro-o-toluidine and glycerol as raw materials to carry out cyclization reaction for preparing 7-chlorine-8-methyl-quinolin, chlorination is carried out through the 7-chlorine-8-methyl-quinolin and chlorine gas, so 3, 7-dichloro-8-(chloromethyl) quinoline is obtained, finally, concentrated nitric acid, sulfuric acid and an oxidation catalyst are used to oxidize the 3, 7-dichloro-8-(chloromethyl) quinoline, wherein the oxidation catalyst is alkyl sulfonic acid, alkyl sulfuric acid or alkyl benzene sulfonic acid. The synthetic method uses the oxidation catalyst, so the reaction yield is greatly increased, the total yield can reach above 70%, and the quinclorac with higher content is obtained; and the method has the characteristics of simplicity in operation, high yield, short oxidization time, low cost and the like.

The invention discloses a liquid-phase catalytic oxidation novel method in a quinclorac synthesis process. The method comprises the steps that: in presence of a cobalt-manganese-bromine ternary complex catalyst, gas comprising oxygen molecules is delivered into a 7-chloro-8-methylquinoline chloride reaction system with aliphatic carboxylic acid as a solvent; the temperature is increased to 100-255 DEG C, and pressure of the system is maintained at 0.5-3MPa; when a reaction is finished, solid product is separated; ethanol is used for re-crystallization, such that high-content (no lower than 97%) quinclorac is obtained. Mother liquor after separation is subjected to distillation and dehydration, and can be used again. With the preparation method provided by the invention, problems of long oxidation process time, processing difficulty of product waste acid, low product purity, and the like of current oxidation processes can be effectively ameliorated.

The invention discloses a weeding composite material for avoiding soil consolidation. The material is prepared from a modified slow release filler, a soil amendment, silica gel, talcum powder, acetyl chitosan, fucoidan, sodium polyphosphate, hexamine, sulfamic acid, sodium percarbonate, amide percarbonate, sodium chloride, copper sulfate, ferrous sulfate, dichlorphenoxyacetic acid, penoxsulam, pyribenzoxim, flucetosulfuron, quinclorac, cyhalofop-butyl, metribuzin, fentrazamide, octyl methoxycinnamate, glycerin, n-butyl acetate, monopotassium phosphate, sodium tetraborate and dodecylbenzene sodium sulfate. The weeding composite material can carry out efficient high-quality release on a weeding additive to improve the efficiency and quality of weeding and meanwhile avoid soil consolidation and soil depletion in the process of weeding.

The invention relates to a herbicide composition, which comprises the following active components in parts by weight: 1 to 20 parts of cyhalofop-butyl, 1 to 20 parts of metamifop and 1 to 60 parts of quinclorac or salt thereof. The invention also relates to application of the herbicide composition in preventing and controlling annual and perennial broadleaf weeds and gramineous weeds of paddy fields. The herbicide composition has much higher weeding effect compared with a single dose, shows great synergistic effect, reduces the drug amount, lowers the drug cost for farmers and reduces influence on environment; meanwhile, the herbicide composition expands the herbicide control spectrum and effectively delays the occurrence and development of single dose resistance.

The invention relates to a weed control composition for plant haulm treatment, which comprises compound an and compound b with the general formula (1) as active compositions, wherein b is selected from any of the following compounds, tribenuron-methyl, thifensulfuron methyl, metsulfuron-methyl, chlorsulfuron, bensulfuron-methyl, isoproturon, siduron, quinclorac, mefenacet,.alachlor, acetochlor, butachlor and metolachlor. The invention also discloses the preparation of the weed control composition, the method for weeds removing, and the use of the weed control composition as herbicide for haulm processing.

The invention provides a method for preparing quinclorac through catalytic oxidation of 7-chloro-8-methylquinoline chloride. A synthetic route of the quincloac is shown in the description. The methodcomprises steps as follows: 7-chloro-8-methylquinoline chloride as a starting material, one or two of water, methanol and acetonitrile as solvents, oxygen, hydrogen peroxide or tert-butyl hydroperoxide as an oxidizing agent and transition metal salt as a catalyst form a compound catalysis system with a catalyst promoter molecular sieve in the description and quaternary ammonium salt, the compoundsynthesis system reacts at the temperature of 35-90 DEG C for 1-12 h, and quinclorac is obtained after conventional separation and has the yield range of 26%-28%. The transition metal salt is taken asthe catalyst, little transition metal salt is used, clean and cheap oxygen and hydrogen dioxide are used to replace high-cost concentrated nitric acid producing severe three wastes, environmental pollution is notably reduced, the production cost is reduced, the reaction condition is relatively mild, and the method is simple and convenient to operate, can be popularized to large-scale industrial production and has great significance in clean production.

The invention discloses a method for simultaneously measuring the residue contents of five weedicides with different structures in soil, and belongs to the technical field of physicochemical detection of pesticide residues in the soil. Specifically, the residue contents of three types of five weedicides with different structures in the soil are directly measured by a high-performance liquid chromatographic (HPLC) instrument by combining dispersive solid-phase extraction (DSPE) with dispersive liquid-liquid microextraction (DLLME). According to the method, the defects and the condition limitations in the prior art are overcome, a method for pre-treating a soil sample and the detection conditions of the instrument are optimized, a DSPE-DLLME-HPLC method is built for simultaneously detecting three types of five weedicides (metsulfuron methyl, bensulfuron methyl, prometryn, atrazine and quinclorac) with different structures in the soil, the linear correlation coefficients are all more than 0.99, the detection limit is 1.5-3.1 ngg<-1>, the average recovery rate is 74.9-90.1%, the relative standard deviation (RSD) is 4.0-5.7%, both the accuracy and the precision meet the residue detection requirements, and the method has the characteristics of low organic solvent consumption, good purification and concentration effects, high sensitivity, simplicity for performing and the like.