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38 results about "4-Chlorophenoxyacetic acid" patented technology
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4-Chlorophenoxyacetic acid or parachlorophenoxyacetate (pCPA) is a synthetic pesticide similar to chemicals in a group of plant hormones called auxins.
Method for simultaneous determination of six residual plant-growth regulators in bean sprout by using gas chromatography-tandem mass spectrometry
ActiveCN106404972ASimple methodDetermination is accurate and reliableComponent separationGas phasePlant growth
The invention relates to a determination method for six residual plant-growth regulators in a bean sprout, especially to a method for simultaneous determination of six residual plant-growth regulators in the bean sprout by using gas chromatography-tandem mass spectrometry. Six plant-growth regulators involved in the invention are composed of 4-chlorophenoxyacetic acid, 2,4-dichlorophenoxyacetic acid, naphthylacetic acid, indoleacetic acid, 2,4-D-butyl ester and indolebutyric acid. The method comprises the following steps: 1) sample treatment; 2) determination, wherein gas chromatography-tandem mass spectrometry is employed; 3) drafting of a standard curve; 4) blank test; and 5) result calculation and description. The determination method employs gas chromatography-tandem mass spectrometry for simultaneous determination of the six residual plant-growth regulators in bean sprout; and the method is simple, convenient, rapid, accurate and reliable, and the lower determination limit, recovery rate and precision of the method all accord with requirements.
Owner:ZHEJIANG ACAD OF SCI & TECH FOR INSPECTION & QUARANTINE
Synthetic method of 2-methyl-4-chlorophenoxyacetic acid
InactiveCN104945240AComplete neutralizationIncrease contentPreparation from carboxylic acid saltsOrganic compound preparationSodium methoxideSodium chloroacetate
The invention discloses a synthetic method of 2-methyl-4-chlorophenoxyacetic acid and relates to the technical field of organic synthesis. According to the method, o-methylphenol used as a raw material reacts with sodium chloroacetate under the action of sodium methylate; then, a reaction product is neutralized with hydrochloric acid to obtain an intermediate 2-methylphenoxyacetic acid; and finally, the intermediate is subjected to chlorination with sulphone chloride to obtain a target product 2-methyl-4-chlorophenoxyacetic acid. According to the invention, sodium methylate replaces sodium hydroxide to undergo neutralization. The neutralization reaction is relatively thorough, and there are few by-products, thus being beneficial to raise content and yield of the product. In addition, sulphone chloride is used for chlorination. The reaction is a water-free reaction, and generation of lots of phenolic wastewater is minimized. Thus, the reaction meets requirements of modern green pesticides. In addition, reaction temperature is relatively low, thus reducing energy consumption. In comparison with original technologies, the reaction technology has obvious advantages of high yield, less ''three wastes (waste gas, wastewater and industrial residue)'' and low energy consumption.
Owner:ANHUI HUAXING CHEM IND CO LTD
2-methyl-4-chlorophenoxyacetic acid preparation method
ActiveCN110028399AEasy to handleLow costPreparation from carboxylic acid saltsOrganic compound preparationSodium acetateSodium chloroacetate
The invention provides a 2-methyl-4-chlorophenoxyacetic acid preparation method, which comprises: carrying out a condensation reaction on sodium o-cresolate and sodium chloroacetate under the catalysis of a trimethylamine catalyst to obtain 2-methyl sodium phenoxyacetate, acidifying, and chlorinating to obtain 2-methyl-4-chlorophenoxyacetic acid. According to the present invention, under the catalysis of the trimethylamine catalyst, sodium o-cresolate and sodium chloroacetate can be subjected to the condensation reaction in the near-neutral environment with the temperature of lower than 70 DEGC, such that the main side reaction for hydrolyzing sodium chloroacetate into sodium glycolate is greatly reduced, the produced wastewater contains less o-methylphenol and glycolic acid (or sodium glycolate) so as to easily meet the nationally acceptable emission standards at a low treatment cost, the resource utilization of the waste acid solution can be achieved, the cost of the raw materials and the three-waste treatment cost are reduced, the purity of 2-methyl-4-chlorophenoxyacetic acid is higher than 95%, and the total yield is higher than 93%.
Owner:JIANGXI TIANYU CHEM CO LTD
Chlorination method for phenoxyacetic acid
InactiveCN102330110AReduce pollutionThe method steps are simpleElectrolysis componentsElectrolytic organic productionTrichlorophenoxyacetic acidPhenoxy acetic acid
The invention discloses a chlorination method for phenoxyacetic acid, which mainly solves the problems of high cost, low yield, poor selectivity and environment pollution of the existing phenoxyacetic acid prepared with the existing chlorination method for phenoxyacetic acid. The chlorination method comprises the following operation steps of: 1. preparing a phenoxyacetic acid solution; 2. carrying out electrolysis; and 3. purifying. The chlorination method has the advantage of simple step, is convenient to operate, is operated at the room temperature and does not need any catalyst so as to lower preparation cost; in addition, the chlorination method has good selectivity, and methyl 4-chlorophenoxyacetic acid, 2,4-dichlorophenoxy aceticaci and 2,4,6-trichlorophenoxyacetic acid can be prepared respectively under different electrolysis conditions with the respective yield of over 90%; and in the chlorination method, chlorine does not serve as a raw material, thereby causing small environment pollution. The chlorination method is mainly used for preparing methyl 4-chlorophenoxyacetic acid, 2,4-dichlorophenoxy aceticaci and 2,4,6-trichlorophenoxyacetic acid.
Owner:HARBIN UNIV OF SCI & TECH
2-methyl-4-chlorophenoxyacetic acid preparation technology
ActiveCN103351295AImprove securityIncrease profitOrganic compound preparationCarboxylic acid salt preparationResource utilizationSodium hydroxide
The invention discloses a 2-methyl-4-chlorophenoxyacetic acid preparation technology. The technology is characterized in that a series of reactions comprising a condensation reaction of o-cresol, sodium hydroxide and water, a sodium modifying reaction of sodium hypochlorite, an acidulation reaction of hydrochloric acid and the like are carried out, and the pH value of 2-methyl-4-chlorophenoxyacetic acid in the acidulation reaction of hydrochloric acid is 5, so production and use demands are satisfied. The above improved technology substitutes a traditional technology utilizing pure benzene and chlorine, so the safety of 2-methyl-4-chlorophenoxyacetic acid in the preparation is increased. An o-cresol recovery operation is added for recovering o-cresol used in the above reaction, a platinum resistance thermometer arranged in a condensation reaction vessel is used for detecting the temperature in the condensation reaction vessel in the late stage of the above reactions, an enamel reaction vessel heating vessel body connected with the enamel reaction vessel is controlled when the temperature of the platinum resistance thermometer is higher than preset 90DEG C, and o-cresol for recovery is obtained through an enamel condenser connected with the enamel reaction vessel to improve the resource utilization rate.
Owner:ANHUI XINGLONG CHEM
Preparation method and application of molecularly-imprinted electrochemiluminescence sensing material
InactiveCN105259167AExtended service lifeImprove stabilityChemiluminescene/bioluminescenceElectrochemiluminescenceAniline
The invention discloses a preparation method and application of a molecularly-imprinted electrochemiluminescence sensing material based on quantum dot electrochemiluminescence for adsorbing trace 2-methyl--chlorophenoxy acetic acid (MCPA). The preparation method of the sensing material comprises the steps that gold nanoparticles and a CdSe-ZnS quantum dot function material which are functionally modified with sodium 2-mercaptoethanesulfonate and p-hydroxy thiophenol are prepared, the MCPA and the prepared function material is mixed, the surface of a gold electrode is modified with the material through electrochemical polymerization film forming, and an electrode modified with diphenylamine-crosslinked nanogold and a quantum dot network array molecularly-imprinted electrochemiluminescence material is prepared after the MCPA is eluted. The preparation method has the advantages that the quantum dot molecularly-imprinted electrochemiluminescence sensing material is synthesized through one step by adopting an electropolymerization method; the sensing material combines the electrochemiluminescence of quantum dots and the specific recognition of molecularly-imprinted polymers, the defects existing in an existing method for preparing the solid luminescence electrode are overcome, and the wide application prospect is achieved.
Owner:TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Method for producing 2-methyl-4-MCPA
ActiveCN101941903ASufficient solubilityReduce generationOrganic compound preparationCarboxylic compound preparationPhenoxy acetic acidAqueous sodium hydroxide
The invention discloses a method for producing 2-methyl-4-MCPA. In the presence of catalyst dimethylamino pyridine and dimethyl formamide, 2-methyl -phenoxy acetic acid introduces chlorine into sodium hydroxide aqueous solution to react so as to obtain the finished product of the 2-methyl-4-MCPA. The invention has the advantages of simple operation and good environment protection property, the yield of the 2-methyl-4-MCPA is improved to be above 95%, and the content of effective ingredients is above 97%.
Owner:JIANGSU GOOD HARVEST WEIEN AGROCHEM
Method of restoring male sterility in gramineous plants and male sterility restorative agent
The present invention provides a method and a composition for restoring pollen fertility by suppressing formation insufficiency in a pollen formation process due to a high-temperature or low-temperature stress. The present invention provides a fertility restorative agent comprising an auxin as an active ingredient, and a method for restoring the fertility of a plants of the family Poaceae, comprising spreading an auxin. Moreover, the present invention provides a fertility restorative agent containing as an active ingredient a substance which inhibits auxin action, and a method for restoring the fertility of rice plant, including spreading a substance which inhibits auxin action. Preferably, the auxin is 10−4 M to 10−7 M of indole-3-acetic acid (IAA), 4-chloroindoleacetic acid, phenylacetic acid, 2,4-dichlorophenoxyacetic acid (2,4-D), α-naphthaleneacetic acid (NAA), 2,6-dichlorobenzoic acid, indolebutyric acid (IBA), 4-chlorophenoxyacetic acid, ethyl 5-chloroindazoleacetate, naphthoxyacetic acid or 2,4,5-trichlorophenoxyacetic acid.
Owner:TOHOKU UNIV
Herbicide composition
InactiveCN102893994AReduce dosageDelay drug resistanceBiocideAnimal repellantsWater dispersibleClopyralid
The invention relates to the field of pesticide preparations and discloses a herbicide composition. The herbicide composition is formed by clopyralid and methyl-4-chlorophenoxyacetic acid in a weight ratio of (1:2)-(1:10). The invention provides a herbicide composition preparation. The active ingredient of the preparation is formed by the herbicide composition. The herbicide composition and the conventional auxiliary materials can be prepared into the herbicide composition preparations such as water aqua, soluble powder, soluble granules, wettable powder or water dispersible granules according to the known methods. The herbicide composition is formed by compounding clopyralid and methyl-4-chlorophenoxyacetic acid, expands the herbicide controlling spectrum, can simultaneously control most weeds in the wheat fields, enhances the broad leaf weed control effect, simultaneously has the advantages of long use age, safety to later crops, long duration and environmental safety and can be widely applied in the agricultural field.
Owner:LIANBAO CROP TECH
Method for detecting 6-benzyladenine and 4-sodium chlophenoxycetate in bean sprouts at the same time
ActiveCN104535703AFast wayQuality and Safety Monitoring GuaranteeComponent separation6-benzyladenineSafety monitoring
The invention relates to a method for detecting 6-benzyladenine and 4-sodium chlophenoxycetate in bean sprouts at the same time. Breaking treatment is carried out on the bean sprouts to be detected, the broken bean sprouts to be detected are placed in a vessel, a sodium hydroxide aqueous solution and a methanol solution are added into the vessel, after the solutions are shaken up, light wave extraction is carried out for 10 seconds to 3 minutes, high-speed centrifugal treatment is carried out, a liquid supernatant is taken and filtered through a film to obtain liquid to be detected, and the liquid to be detected enters a liquid chromatography tandem mass spectrometer to be detected. The method has the advantages of being rapid, efficient, high in sensitivity and the like, and provides the new guarantee for safety monitoring of quality of the bean sprouts in the market.
Owner:SHANDONG ANALYSIS & TEST CENT +1
Production process of 2-methyl-4-chlorophenoxyacetic acid
InactiveCN108774126ANo emissionsReduce consumptionPreparation from carboxylic acid saltsOrganic compound preparationChloroacetic acidsSolvent
The invention discloses a production process of 2-methyl-4-chlorophenoxyacetic acid. The production process comprises the following steps: carrying out the procedures of perborate formation, condensation, chlorination, salt formation and the like on o-cresol, chloroacetic acid, dichloroethane and the like served as raw materials, recovering o-cresol by external circulation rectification under vacuum, and recycling o-cresol and water; performing reverse chlorination with an external circulation solvent to prepare 2-methyl-4-chlorophenoxyacetic acid. By adopting the production process, the chlorination efficiency is increased effectively, so that no waste water is discharged in production, chlorine gas consumption and industrial organic waste residue production are reduced, and green production is realized. The production process has a good social benefit.
Owner:JIANGSU JIANGU CHEM
Method for producing 2-methyl-4-chlorophenoxyacetic acid esters
ActiveCN101921190ANo need to separateAvoid it happening againOrganic compound preparationOrganic-compounds/hydrides/coordination-complexes catalystsAlcoholSolvent
The invention discloses a method for producing 2-methyl-4-chlorophenoxyacetic acid esters. 2-methyl phenoxyacetic acid is reacted with chlorine introduced into an alcoholic solvent (corresponding to the alcoholic part of an ester target product) to form finished products of the 2-methyl-4-chlorophenoxyacetic acid esters in the presence of phenothiazine and dimethylamino pyridine catalysts. The 2-methyl phenoxyacetic acid is reacted in a reaction kettle, and the finished products of the 2-methyl-4-chlorophenoxyacetic acid esters can be directly produced without separation of the intermediate 2-methyl-4-chlorophenoxyacetic acid. The total yield of the finished products of the 2-methyl-4-chlorophenoxyacetic acid esters is improved to over 92 percent, and the content of effective ingredients is improved to over 93 percent.
Owner:JIANGSU GOOD HARVEST WEIEN AGROCHEM
Method for producing esters of 2-methyl-4-chlorophenoxyacetate
InactiveCN108727196ALow costAdvanced technologyPreparation from carboxylic acid saltsOrganic compound preparationSodium chloroacetateThermal insulation
The invention relates to the technical field of herbicides and particularly relates to a method for producing esters of 2-methyl-4-chlorophenoxyacetate. The method comprises the following steps: adding chloroacetic acid to a reactor, and dropwise adding a 80% sodium carbonate solution to perform neutralization reaction to generate sodium chloroacetate; adding o-cresol to another reactor, dropwiseadding a 30% sodium hydroxide solution to perform reaction to generate sodium o-cresolate, and after the reaction is completed, performing thermal insulation treatment; and dropwise adding sodium chloroacetate to the sodium o-cresolate reactor through a metering tank, and performing condensation reaction to generate sodium o-phenoxyacetate and the like. The method provided by the invention has theadvantages that the cost of the product is low, the product is environmentally friendly, the technology is advanced and mature, and the safety operability is high; the total yield of esters of 2-methyl-4-chlorophenoxyacetate is greater than or equal to 93%; and the product does not contain dioxin.
Owner:ANHUI HUAXING CHEM IND CO LTD
The preparation technology of 2-methyl-4-chlorophenoxyacetic acid dimethylamine salt
InactiveCN102285890AFewer process stepsProcess safetyAmino preparation from aminesCarboxylic acid salt preparationSodium acetateSodium chloroacetate
The invention discloses a dimethylamine salt of 2-methyl-4-chlorophenoxyacetic acid. The specific process steps are as follows: 1. adding chloroacetic acid to a reaction kettle, and dripping caustic soda solution to generate sodium chloroacetate; Phenol is added to another reactor, and caustic soda solution is added dropwise to generate sodium o-cresol; 3, the sodium chloroacetate of the previous kettle is added dropwise to the sodium o-cresol reactor of the next kettle to generate sodium 2-methylphenoxyacetate; 4. Transfer the above reaction materials into a chlorination reaction kettle, add hydrochloric acid to generate 2-methylphenoxyacetic acid crystals, add a mixed solvent of xylene and dichloroethane to dissolve the crystals into a solution, and carry out chlorination in the chlorination reaction kettle Reaction, generate 2-methyl-4-chlorophenoxyacetic acid, then transfer to the crystallization tank for crystallization, then put it into a centrifuge for centrifugation, and dry it into crystals after centrifugation; 4 Chlorine, dimethylamine aqueous solution and water are respectively added in the salt-forming reactor to generate the product 2-methyl-4-chlorophenoxyacetic acid dimethylamine salt. The preparation process has few reaction steps, safe process, high efficiency, short cycle and low cost.
Owner:JIANGSU JIANGU CHEM
Method of cultivating yellow needle mushrooms in bottle
InactiveCN109526547ARich in amino acidsSugary bright highCultivating equipmentsMushroom cultivationVitamin CBottle
The method provides a method of cultivating yellow needle mushrooms in a bottle. An adopted culture medium comprises following components in parts by weight: 10 to 15 parts of lemon peel, 5 to 8 partsof sugarcane, 5 to 10 parts of hotbed chives, 3 to 6 parts of millet flour, 3 to 6 parts of pumpkin, 0.5 to 1 part of sodium chloride, 2 to 3 parts of silkworm chrysalis powder, 0.3 to 0.5 part of yeast powder, 0.5 to 1 part of tomato extract, 0.3 to 0.5 part of paclobutrazol powder, 0.2 to 0.4 part of 4-chlorophenoxyacetic acid powder, 3 to 5 parts of chitosan, 0.5 to 2.5 parts of magnesium carbonate, 20 to 25 parts of trehalose, 1.3 to 9.5 parts of nano calcium carbonate, and 0.2 to 0.8 part of lauryl sodium sulfonate. According to the method, hotbed chive is adopted. Hotbed chive is rich in proteins, sugar, calcium, iron, phosphor, vitamin A, vitamin B2, vitamin C, nicotinic acid, glycosides and amaroid, has the functions of dispelling coldness and eliminating stasis, enhances the physical strength, and promotes the appetite.
Owner:SHANDONG YOUHE BACTERIA IND CO LTD
Treating agent for removing methanal, methyl alcohol and phenol in phenolic resin workshop wastewater
InactiveCN105399192AStrong complexing abilityFast precipitationWater contaminantsNature of treatment waterAcetophenoneMethyl group
The invention relates to a treating agent for removing methanal, methyl alcohol and phenol in phenolic resin workshop wastewater, compounded from the following components of 2-tridecanone, 4-sodium parachlorophenoxy, fritillarine, thiodipropionicacid dilauryl ester, rotundic acid, 4-acetoxyl-3-methoxy-(2-allyl)benzene, lobelanidine HCL, 4-octylphenol ethoxylate, 3',4'-dyhydroxy-2-(methylamino)acetophenone hydrochloride, and the like. The treating agent is strong in complexing power with a target substance, quick in complex precipitate forming speed, little in usage amount, and free of damage to a water body, and has a removal rate of 99.9 percent.
Owner:王春望
A kind of preparation technology of 2-methyl-4-chlorophenoxyacetic acid
ActiveCN103351295BImprove securityIncrease profitOrganic compound preparationCarboxylic acid salt preparationResource utilizationSodium hydroxide
Owner:ANHUI XINGLONG CHEM
Fertilizer special for lychee planting
InactiveCN108863676AImprove featuresPromote photosynthesisAlkali orthophosphate fertiliserExcrement fertilisersAnimal sciencePotassium
The invention relates to fertilizer special for lychee planting. The fertilizer is prepared from the following raw materials in parts by weight: 30-50 parts of dry manure powder, 30-40 parts of potassium fertilizer, 30-40 parts of urea, 12-26 parts of algin, 12-26 parts of algae iodate, 30-40 parts of monoammonium phosphate, 30-40 parts of ammonium chloride, 30-40 parts of sapropel, 30-40 parts ofbean cake fertilizer, 30-40 parts of silkworm excrement, 30-40 parts of bagasse, 10-20 parts of honeycombs, 20-30 parts of soybean meal, 20-30 parts of herba andrographitis, 20-30 parts of chopped garlic, 20-30 parts of trametesrobiniophila, 20-30 parts of herba houttuyniae, 20-30 parts of honeysuckle flowers, 20-30 parts of flos caryophylli, 20-30 parts of radix isatidis, 16-26 parts of organosilicone, 2-5 parts of sodium cyclamate, 2-6 parts of 4-chlorophenoxyacetic acid and 1.8-2.2 parts of trace elements. The fertilizer has the advantages of long-lasting fertility, capability of promotinggrowth of lychee seedlings and enhancing immunity and the like.
Owner:黄益红
Synthesis method of 2-methyl-4-chlorophenoxyacetic acid
InactiveCN108863762AThorough responseIncrease contentPreparation from carboxylic acid saltsOrganic compound preparationFiltrationSynthesis methods
The invention discloses a synthesis method of 2-methyl-4-chlorophenoxyacetic acid, and relates to the technical field of organic synthesis. The synthesis method comprises the following steps that methyl phenoxyacetic acid and methyl ethyl carbonate are added into a reaction kettle, chlorine is introduced for chlorination, and after washing, cooling crystallization, suction filtration and drying are conducted, the target product is obtained. According to the synthesis method of the 2-methyl-4-chlorophenoxyacetic acid, the methyl ethyl carbonate is adopted for replacing dichloroethane, so that by-products are few, and the synthesis method of the 2-methyl-4-chlorophenoxyacetic acid is beneficial for improving the content and the yield of the product; a large amount of waste acid is avoided, and the solvent (methyl ethyl carbonate) is environmentally friendly and non-toxic, and meets the requirements of modern green pesticides; compared with an original technology, a reaction technology has the obvious advantages of high yield, little three-waste and low energy consumption.
Owner:ANHUI HUAXING CHEM IND CO LTD
Root resistant agent for production of root resistant material and preparation method of root resistant agent
The invention discloses a root resistant agent for production of a root resistant material and a preparation method of the root resistant agent. The root resistant agent is prepared from dimethyl tetrachlorophenoxypropionic acid, polyethylene glycol, polyoxyethylene lauryl ether, polydimethylsiloxane, nonylphenol polyoxyethylene ether, ethyl alcohol and 4-chlorophenoxyacetic acid. According to the preparation method, dimethyl tetrachlorophenoxypropionic acid, 4-chlorophenoxyacetic acid and absolute ethyl alcohol are mixed, added to a reaction kettle and subjected to reflux under catalysis of p-Toluenesulfonic acid; then polyethylene glycol, polyoxyethylene lauryl ether, polydimethylsiloxane, nonylphenol polyoxyethylene ether and ethyl alcohol are added, stirred sufficiently and left to stand for reaction; a product after the reaction is taken out and cooled naturally. The root resistant agent has the functions that when a plant root system is contacted with a waterproof material containing the root resistant agent in a growth process, the plant root system is inhibited and expelled, so that the plant root system is prevented from growing downwards continuously, accordingly, the penetrating damage of the plant root system to a waterproof layer is reduced, the completeness of the waterproof layer is guaranteed, and the service life of the waterproof layer is prolonged greatly.
Owner:雷小卫
Herbicidal composition and application thereof
InactiveCN107912438ASynergisticImprove the effect of weed controlBiocideDead animal preservationChemical compositionFluroxypyr
The invention relates to a compound herbicide containing bentazone, methyl-4-chlorophenoxyacetic acid and triclopyr or fluroxypyr. The compound herbicide is characterized by comprising main effectiveingredients A, B and C, wherein A is bentazone, B is methyl-4-chlorophenoxyacetic acid and C is triclopyr or fluroxypyr; the weight ratio of A, B and C is (1-100):(1-100):(1-100), preferably, (1-60):(1-50):(1-20) and more preferably, (1-50):(1-20):(1-20). The compound herbicide is used for controlling sedge weed and broadleaf weed for treatment of post-emergence stems and leaves in paddy fields, sugarcane fields, uncultivated areas and the like.
Owner:LIER CROPSCIENCE CO LTD
Orange pedicel drop resisting preparation and application method thereof
InactiveCN104336168AInhibit sheddingReduce fruit drop rateFruit and vegetables preservationAdditive ingredientPhenyl Ethers
The invention provides an orange pedicel drop resisting preparation which is prepared from the following ingredients in parts by weight: one part of 2-methyl-4-chlorophenoxyacetic acid or 2-methyl-4-sodium chlorophenoxyacete or 2-methyl-4-amine chlorophenoxyacete, 10-20 parts of glycerinum and 40-50 parts of polyoxyethylene-8-octyl phenyl ether-100 (triton X-100). The orange pedicel drop resisting preparation is used for preventing drop of orange fruits before harvesting, and fruit drop before harvesting can be reduced by 64.1-87.4 percent. The preparation has a good effect of preventing pedicel drop of stored orange fruits and can be used for reducing the pedicel drop of the stored fruits by 94-100 percent.
Owner:CITRUS RES INST SOUTHWEST UNIV
Preparation technology of high-purity 2-methyl-4-chlorophenoxyacetic acid
InactiveCN108947791ANo lossOrganic compound preparationCarboxylic acid salt preparationCresolCoiled tubing
The invention discloses a preparation technology of high-purity 2-methyl-4-chlorophenoxyacetic acid, comprising the following steps: (1) combining outer circulation rectification under vacuum and liquid-liquid layering and reusing ortho-cresol in sodium o-cresolate; (2) preparing 2-methyl-4-chlorophenoxyacetic acid by outer cycling solvent-process reverse chlorination; and (3) conducting coiled tubing preparation of 2-methyl-4-chlorodimethylamine salt. COD value of water during the treatment process is lower than 100 ppm, there is almost no loss of extraction absorbents and the extraction absorbents can be recycled; and by resource treatment of tail gas, annual output of 0.5 ton of dichloroethane with purity being 98% and above and 0.24 ton of ortho-cresol with purity being 97% and above is achieved.
Owner:JIANGSU JIANGU CHEM
Method for removing formaldehyde, methyl alcohol and phenol in wastewater of phenolic resin workshop
InactiveCN105417662AStrong complexing abilityFast precipitationWater contaminantsWater/sewage treatment by flocculation/precipitationAcetophenoneMethyl group
The invention relates to a method for removing formaldehyde, methyl alcohol and phenol in wastewater of a phenolic resin workshop. 2-tridecanone, sodium 4-chlorophenoxyacetate, fritillarine, thiodipropionicacid dilauryl ester, rotundic acid, 4-acetoxyl-3-methoxyl-(2-allyl) benzene, lobelanidine hydrochloride, 4-octyl phenol ethoxylate, 3',4'-dyhydroxy-2-(methylamino) acetophenone hydrochloride and the like are sequentially added to the wastewater. The complexing power of the treatment method and target matter is high, the sedimentation speed of formed complex is high, the removal rate can reach 99.9%, the use amount is small, and no harm is generated to water.
Owner:王春望
2-methyl-4-chlorophenoxyacetic acid and glyphosate compound herbicide
InactiveCN103329930ASynergistic effect is obviousReduce dosageBiocideAnimal repellantsGlyphosateIsopropylamine
The invention discloses a 2-methyl-4-chlorophenoxyacetic acid and glyphosate compound herbicide which is characterized by mainly comprising the components in percentage by weight: 1-20% of 2-methyl-4-chlorophenoxyacetic acid isopropylamine, 1-10% of glyphosate isopropylamine, 1-20% of emulsifier and the balance of water. Due to the adoption of the proportion, the 2-methyl-4-chlorophenoxyacetic acid and glyphosate compound herbicide has a remarkable synergistic effect for grassy weeds, has an additive effect for broad leaf weeds such as chandali and can be used as a sterilant herbicide. Compared with the traditional herbicide, the 2-methyl-4-chlorophenoxyacetic acid and glyphosate compound herbicide has the advantages of brand new herbicide formulation, stronger pesticide effect, smaller dosage, good preventing effect, high weed killing speed and strong adaptability.
Owner:ANHUI XINGLONG CHEM
Method for producing 2-methyl-4-MCPA
ActiveCN101941903BSufficient solubilityReduce generationOrganic compound preparationCarboxylic compound preparationPhenoxy acetic acidAqueous sodium hydroxide
The invention discloses a method for producing 2-methyl-4-MCPA. In the presence of catalyst dimethylamino pyridine and dimethyl formamide, 2-methyl -phenoxy acetic acid introduces chlorine into sodium hydroxide aqueous solution to react so as to obtain the finished product of the 2-methyl-4-MCPA. The invention has the advantages of simple operation and good environment protection property, the yield of the 2-methyl-4-MCPA is improved to be above 95%, and the content of effective ingredients is above 97%.
Owner:JIANGSU GOOD HARVEST WEIEN AGROCHEM
2-(4-methoxyphenyl) propionic acid and application of salt compound thereof same in growth of rootless sprouts
InactiveCN105230456AGrowth inhibitory activityEarly germinationCultivating equipmentsHorticulture methodsPropanoic acidChemical compound
The invention discloses a 2-(4-methoxyphenyl) propionic acid and application of a salt compound thereof the same in growth of rootless sprouts. The 2-(4-methoxyphenyl) propionic acid and the salt compound thereof can promote growth of stems of the sprouts by inhibiting growth of roots and root hares of the sprouts, so the 2-(4-methoxyphenyl) propionic acid and the salt compound thereof can raise the edible ratio and the appearance of the sprouts. According to the invention, a problem that the germination rate of the soybean sprouts quickly decrease along with the storage time of soybeans when 6-benzyladenine and sodium parachlorophenoxy are used for producing soybean sprouts can be solved, the above problem is greatly unfavourable for production of soybean sprouts, and at the same time, problems that soybeans which do not sprout causes reduction of yield of sprouts or make soybeans easily rot to cause great loss of production of sprouts can be solved.
Owner:HUAZHONG AGRI UNIV
Preparation method of 2-methyl-4-sodium chlophenoxycetate
InactiveCN109096093AWon't clogWill not polluteOrganic compound preparationCarboxylic acid salt preparationPhytotoxicityMethyl group
The invention provides a preparation method of 2-methyl-4-sodium chlophenoxycetate. The preparation method comprises the following steps: mixing 2-methyl-4-chlorophenoxyacetic acid solid, a sodium-containing compound solid and water in a kneading device or a rake-type drying device with a condensed water absorption device, reacting under sealed conditions to obtain powdery 2-methyl-4-sodium chlophenoxycetate; the molar ratio of the 2-methyl-4-chlorophenoxyacetic acid to a sodium-containing compound to water is 1 to 1.0-1.8 to 0.1 to 1.2. The content of the prepared product, namely 2-methyl-4-sodium chlophenoxycetate, is as high as 93% to 96%, the water content is less than 1.0%, and the prepared product has no pungent phenolic odor. Due to the low water content, a blanking pipe of a packing machine is not blocked when mechanical packaging is performed; because of the high content of the product, no organic impurities enter the product, the probability of phytotoxicity to crops is low and no pollution can be caused to soil.
Owner:鹤壁市鹤农生物科技有限公司
Method of restoring male sterility in gramineous plants and male sterility restorative agent
InactiveUS20110306498A1Rice plant can be restoredBiocidePlant growth regulatorsRice plantsPhenylacetic acid
The present invention provides a method and a composition for restoring pollen fertility by suppressing formation insufficiency in a pollen formation process due to a high-temperature or low-temperature stress. The present invention provides a fertility restorative agent comprising an auxin as an active ingredient, and a method for restoring the fertility of a plants of the family Poaceae, comprising spreading an auxin. Moreover, the present invention provides a fertility restorative agent containing as an active ingredient a substance which inhibits auxin action, and a method for restoring the fertility of rice plant, including spreading a substance which inhibits auxin action. Preferably, the auxin is 10−4 M to 10−7 M of indole-3-acetic acid (IAA), 4-chloroindoleacetic acid, phenylacetic acid, 2,4-dichlorophenoxyacetic acid (2,4-D), α-naphthaleneacetic acid (NAA), 2,6-dichlorobenzoic acid, indolebutyric acid (IBA), 4-chlorophenoxyacetic acid, ethyl 5-chloroindazoleacetate, naphthoxyacetic acid or 2,4,5-trichlorophenoxyacetic acid.
Owner:TOHOKU UNIV
Sugar orange selenium-rich foliar fertilizer and preparation method thereof
InactiveCN109553472APromote growthEffective regulation of growthBio-organic fraction processingExcrement fertilisersAdhesiveMicrobial agent
The invention discloses a sugar orange selenium-rich foliar fertilizer, comprising the following raw materials in parts by weight: 10-30 parts of human and animal excrement, 1-2 parts of EM strain, 7-10 parts of fulvic acid, 6-9 parts of earthworm protein, 0.2-0.5 part of 6-benzylaminopurine, 0.2-0.5 part of paclobutrazol, 0.2-0.5 part of 4-chlorophenoxyacetic acid, 0.2-0.5 part of glyphosine, 0.2-0.5 part of 2-diethylaminoethyl hexanoate, 0.2-0.5 parts of naphthaleneacetic acid, 1-3 parts of borax, 1-3 parts of zinc sulfate, 1-3 parts of manganese sulfate, 3-5 Parts of adhesive, 3-7 parts ofpenetrating agent, 5-6 parts of diatom, 5-6 parts of sodium selenite, 5-6 parts of wheat bran, 0.1 part of composite microbial agent, and 80-100 parts of water. The sugar orange selenium-rich foliar fertilizer is comprehensive in nutrition and good in fertilizer efficiency, and is beneficial to growth of sugar orange. The invention also discloses a preparation method of the sugar orange selenium-rich foliar fertilizer. The preparation method has the advantages of simple steps, easy acquisition of raw materials and obvious fertilizer effect.
Owner:LOMON LAND AGRI
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