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46 results about "Halogenated alcohol" patented technology
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Hydrothermal hydrolysis of halogenated compounds
Owner:HALOCARBON PROD CORP
Catalyst component used for vinyl polymerization, preparation method and application
The invention provides a titaniferous solid catalyst component used for vinyl polymerization and a preparation method. The titaniferous solid catalyst component is prepared according to the following three continuous steps: 1) under the existence of halogen or halogen-containing compound, reacting metal magnesium with alcohol, thereby preparing a magnesium-containing solid; 2) utilizing an organic metallic compound or a mixture of the organic metallic compound and an electron donor compound to process the magnesium-containing solid, thereby obtaining a magnesium-containing catalyst carrier; and 3) under the existence of an inert organic solvent, utilizing a compound of transition metal titanium to process the magnesium-containing catalyst carrier, and then utilizing a halogenated alcohol compound to process, thereby obtaining the catalyst component. The preparation method has the characteristics of simple process, convenience in operation, low investment in industrial equipment, easiness in controlling the product quality, and the like. The titaniferous solid catalyst component has the characteristics of high vinyl polymerization catalytic activity, high copolymerizing capacity, high stacking density of polymer, less subdivision, and the like. The titaniferous solid catalyst component is suitable for slurry polymerization or gas-phase polymerization of vinyl, and is especiallysuitable for a gas-phase fluidized bed polymerization process for the vinyl, in which the catalyst is fed in a slurry form.
Owner:CHINA PETROLEUM & CHEM CORP +1
Catalyst component for ethene polymerization and catalyst
The invention relates to a catalyst component for ethene polymerization and a catalyst, and use of the catalyst. The catalyst component comprises a superfine inorganic oxide carrier, the carrier is loaded with a reaction product of a magnesium halide, a halogenated alcohol, at least a titanium halide and at least an electron donor compound, and the catalyst component is obtained by the reaction including the following steps: (1) mother liquor preparation, to be more specific, reacting the magnesium halide, the titanium halide and the halogenated alcohol with the general formula of XnROH in the electron donor compound to prepare mother liquor; (2) carrier mixing, to be more specific, mixing the mother liquor prepared by the step (1) with the superfine inorganic oxide carrier to obtain slurry; and (3) spray forming, to be more specific, performing spray drying on the slurry obtained by the step (2) to obtain the solid catalyst component. The prepared catalyst has high activity when the catalyst is used for ethylene homopolymerization or copolymerization of ethene and other alpha olefins, and the obtained polymers are low in hexane extract, and low in oligomer content.
Owner:CHINA PETROLEUM & CHEM CORP +1
One-step catalytic process for the synthesis of isocyanates
InactiveUS20070293696A1Efficient and safe and cost-effectivePreparation by nitro-carbon monoxide reactionOrganic compound preparationKetoneHalocarbon
A one-pot process for the synthesis of isocyanates, polyisocyanates or mixtures thereof which includes the steps of: i. preparing a mixture comprising an amine, an alcohol, an oxygen-containing gas, carbon monoxide, a metal complex catalyst selected from the group consisting of macrocyclic complex catalysts and cobalt Shiff base catalysts; and a solvent selected from the group consisting of aliphatic or aromatic halocarbons, perhalogenated alcohols, halogenated ethers, halogenated ketones, perfluorinated hydrocarbons, polymers of chlorotrifluoroethylene having the formula —(CF2—CFCl)n wherein n is between 2 and 10, and mixtures thereof; ii. subjecting the resulting mixture to a first heating under pressure; iii. cooling and depressurizing the mixture resulting from the previous step; and iv. subjecting the mixture of the previous step to a second heating to separate out the isocyanate product from the mixture.
Owner:REPSOL SA
Preparation method of rigid foam flame-retardant polyether polyol for all-water foaming
The invention belongs to the technical field of polyurethane synthesis, and in particular relates to a preparation method of a rigid foam flame-retardant polyether polyol for all-water foaming. The preparation method uses sucrose, a low-molecular-weight polyol, a halogenated alcohol, phenolic resin, and oil as initiators, and uses an alkali metal salt as a catalyst, and a section of propylene oxide is introduced for carrying out a reaction; and after the reaction is completed, a mixture of propylene oxide and ethylene oxide is introduced for carrying out a mixed polymerization reaction, and acrude ether is purified by post-treatment to obtain a finished product. The technological process is simple in operation, the obtained rigid foam flame-retardant polyether product for all-water foaming has low viscosity and good compatibility with water, a polyurethane foam plastic product prepared from the polyether product has relatively narrow density distribution, relatively high strength, good dimensional stability and bonding strength, and relatively low thermal conductivity, has certain flame-retardant effects, and is especially suitable for all-water foamed thermal insulation pipes andother thermal insulation fields.
Owner:BEFAR GROUP CO LTD +1
Preparation process of epoxy compound
InactiveCN103896885ASafety scale-up productionAvoid poisonousOrganic chemistryEpoxyCombinatorial chemistry
The invention discloses a preparation process of an epoxy compound. The preparation process comprises the steps of enabling alkene to react with a halogenating agent in water or a mixed solvent, and performing alkali treatment to obtain the epoxy compound. The epoxy compound can be prepared through a one-pot method by preparing halogenated alcohol through reaction between a halogenating reagent containing NBS and alkene and then enabling the halogenated alcohol to react with alkali without the separation of intermediates. The preparation process disclosed by the invention avoids highly-toxic and high-explosive reagents applied to a conventional process method, so that the production of the epoxy compound can be safely amplified.
Owner:CHEN STONE GUANGZHOU CO LTD
Method for preparing gemini surfactant by one-pot method
ActiveCN105885815ALow costReduce usageOrganic compound preparationSulfonic acid esters preparationSolventIon
The invention discloses a method for preparing a gemini surfactant by a one-pot method and belongs to the field of organic chemical synthesis. The method for preparing the gemini surfactant by the one-pot method is characterized in that the gemini surfactant is synthesized from organic acids, N,N-dimethyl amine compounds and halogenated alcohols with ionic liquid serving as a catalyst and polyalcohols serving as solvents through the one-pot method. Compared with a traditional two-step method for preparing the gemini surfactant, the method has the advantages that the method is simple in preparation technology, simple and convenient to operate, low in energy consumption and cost and extremely suitable for industrial production. When used for preparing oil-field clean fracturing fluid by serving as a thickening agent, the gemini surfactant has the advantages of high resistance to temperature and shearing, excellent sand-carrying performance without addition of a gel breaker and reverse discharging and the like.
Owner:HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
Method for preparing beta-halogenated ether and beta-halogenated alcohol under catalysis of peroxidase
ActiveCN113549659AReduce pollutionImprove stabilityOxidoreductasesFermentationPeroxidasePhenyl group
The invention discloses a method for preparing beta-halogenated ether and beta-halogenated alcohol through catalysis of peroxidase. The method comprises the following steps: adding hydrogen peroxide, halide salt and olefin as shown in a formula III into a buffer solution, finally adding peroxidase, and reacting to obtain the beta-halogenated alcohol as shown in a formula I; and also adding alcohol as shown in a formula IV into the reaction system to obtain the beta-halogenated ether as shown in a formula II; in the formula I, the formula II, a formula III and the formula IV, R1 is alkyl, phenyl, substituted phenyl, aryl or substituted aryl, R2 is hydrogen, alkyl, phenyl, substituted phenyl, aryl or substituted aryl, wherein R1 and R2 are connected to form a naphthenic base, and R3 is alkyl, phenyl, substituted phenyl, aryl or substituted aryl. According to the invention, the raw materials are simple and easy to obtain, the reaction condition is mild, the operation is simple and convenient, the used solvent is water, and compared with a conventional organic solvent, the method is greener and more environmentally friendly.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI
A polymerizable thioxanthone visible light initiator containing acrylate or methacrylate and its preparation method
Owner:WUHAN UNIV
Method for preparing high-temperature and strong alkali resistant type anion exchange resin
The invention relates to a method for preparing a high-temperature and strong alkali resistant type anion exchange resin. The method comprises the following steps: 1) allowing styrene polymer to react with chloromethyl ether, then stopping the reaction, washing and drying to obtain chloromethylated beads; 2) mixing C1-C12 long-chain halogenated alcohol with solvent, dropwise adding a trimethylamine aqueous solution to react, and after the reaction is finished, distilling out the solvent; cooling to room temperature, dropwise adding the chloromethylated beads to react, after the reaction, distilling out the solvent, and washing to obtain the strong alkali resistant type anion exchange resin. The method can be used for large-scale industrial production and is economic and environment-friendly, and the product has relatively high heat-resisting stability and can be used in the fields of high-temperature condensation water treatment, high-temperature catalysis and the like.
Owner:PUROLITE (CHINA) CO LTD
Tobacco shred expanding agent
The invention relates to a tobacco shred expanding agent. The tobacco shred expanding agent comprises the following components in percentage by mass: 49-98% of halogenated olefin; 1-50% of an ester compound; and 1-20% of halogenated ether or halogenated alcohol. The tobacco shred expanding agent provided by the invention has the advantages of the zero ODP value, the very low GWP value, the moderate boiling point, safety, low toxicity, incombustibility and volatility, and is very suitable for expanding tobacco shreds in the tobacco processing industry.
Owner:BEIJING INST OF AEROSPACE TESTING TECH
Production process of olefin polymerization catalyst and olefin polymer
InactiveUS20120264889A1High yieldOrganic-compounds/hydrides/coordination-complexes catalystsCatalyst activation/preparationZinc compoundsOlefin polymerization
A production process of an olefin polymerization catalyst, comprising steps of (1) contacting a defined zinc compound, Zn(L1)2, with a defined halogenated alcohol, thereby forming a zinc atom-containing compound, and (2) contacting the zinc atom-containing compound with a defined transition metal compound and an optional organoaluminum compound; and a production process of an olefin polymer using such an olefin polymerization catalyst.
Owner:SUMITOMO CHEM CO LTD
Process for producing oil containing vegetable glycosphingolipid
InactiveCN101035884AFatty-oils/fats refiningLiquid solutions solvent extractionGlycosphingolipidSolvent
A method for efficiently manufacturing a vegetable glycosphingolipid having reduced unpleasant odor using a barley-derived starting material is provided. The method for manufacturing a vegetable glycosphingolipid according to the present invention comprises an extraction step (2) for preparing a mixture with a non-halogenated alcohol-based solvent and heating the starting material mixture, and a fatty acid removal step (3) for removing fatty acids from the extract obtained in the extraction step (2).
Owner:SAPPORO BREWERIES
Preparation method for polylactic acid-based epoxy resin
InactiveCN107474233ALow viscosityReduce consumptionEpoxy resin adhesivesEpoxy resin coatingsHydrogen halideEpoxy
The invention relates to a preparation method for a polylactic acid-based epoxy resin. Maleic anhydride is used for carrying out end group modification on low-molecular weight polylactic acid, so that polylactic acid, both ends of which are terminated by carboxyl groups, is obtained; the carboxyl-terminated polylactic acid and halogenated epoxy compound react under the action of basic catalyst to generate polylactic acid halogenated alcohol ester; hydrogen halide is then removed, and thereby the polylactic acid-based epoxy resin is obtained. The preparation method has the advantages of simple process, low cost and high yield, and is suitable for mass industrial production; moreover, polylactic acid comes from crops such as corn and potato, which can help to reduce the consumption of petroleum resource and the emission of CO2; and the obtained epoxy resin has lower viscosity and good adhesion, can be used as a matrix for adhesive, coating and composite materials, and is suitable for processes for forming a variety of composite materials.
Owner:芜湖通全科技有限公司
Method for preparing aromatic aldehyde
ActiveCN113372204AWide variety of sourcesHigh reaction conversion rateOrganic compound preparationCarboxylic acid esters preparationCatalytic oxidationToluene
The invention discloses a method for preparing aromatic aldehyde, which comprises the following steps: a toluene compound is subjected to a catalytic oxidation reaction in the presence of an oxidizing agent and in a catalytic system to generate aromatic aldehyde, wherein the catalytic system comprises a halogenated alcohol solvent, nitrate ions and a free radical initiator, and halogen in the halogenated alcohol solvent is fluorine and / or chlorine. The method not only can obtain aromatic aldehyde with high selectivity, but also has an ideal conversion rate.
Owner:ZHEJIANG UNIV +1
Process for the polymerization of ethylene
The present disclosure provides a gas-phase polymerization process for preparing polyethylene, wherein halogenated alcohols in combination with a Ti based catalyst component and aluminum alkyls as co-catalyst suppress ethane formation or increase polymerization activity.
Owner:BASSELL POLIOLEFINE ITAL SRL
A kind of preparation method of high temperature resistant strong alkali type anion exchange resin
ActiveCN106179536BHarsh conditionsReduce yieldAnion exchangersEnvironmental resistanceChloromethyl Ether
The invention relates to a method for preparing a high-temperature and strong alkali resistant type anion exchange resin. The method comprises the following steps: 1) allowing styrene polymer to react with chloromethyl ether, then stopping the reaction, washing and drying to obtain chloromethylated beads; 2) mixing C1-C12 long-chain halogenated alcohol with solvent, dropwise adding a trimethylamine aqueous solution to react, and after the reaction is finished, distilling out the solvent; cooling to room temperature, dropwise adding the chloromethylated beads to react, after the reaction, distilling out the solvent, and washing to obtain the strong alkali resistant type anion exchange resin. The method can be used for large-scale industrial production and is economic and environment-friendly, and the product has relatively high heat-resisting stability and can be used in the fields of high-temperature condensation water treatment, high-temperature catalysis and the like.
Owner:PUROLITE (CHINA) CO LTD
Method for catalytic synthesis of R-2-bromo-1-aryl alcohol using carrot root whole cells
The invention discloses a method for catalytic synthesis of R-2-bromo-1-aryl alcohol using carrot root whole cells. As shown in the formula, the method uses carrot root whole cells as a biocatalyst which catalyzes asymmetric reduction of alpha-bromo-aryl ethyl ketone under a proper condition to synthesize the corresponding R-2-bromo-1-aryl alcohol, the enantiomer excess is over 82.5%, and in the formula, R is H, p-CH3, p-OCH3, p-Cl, p-NO2, m-Cl and other different substituent groups. The chiral halogenated alcohol R-2-bromo-1-aryl alcohol synthesized using the method of the invention is an important chiral synthesis building block, and can also be transformed to chiral synthesis building block with alpha site being another group, so that R-2-bromo-1-aryl alcohol has high application value in synthesis of medicines, pesticides, additives and other chiral compounds.
Owner:JIANGNAN UNIV
Acid clean fracturing fluid and preparation method thereof
ActiveCN109913196AImprove temperature resistanceStrong acidifying abilityDrilling compositionOrganic acidFracturing fluid
The invention discloses an acid clean fracturing fluid and a preparation method thereof and belongs to the technical field of oil production engineering in the petroleum industry. The acid clean fracturing fluid can be obtained by using two organic acids, N,N-dimethylamino compound and halogenated alcohol as raw materials to synthesize a dimeric surfactant and then mixing and stirring the dimericsurfactant with hydrochloric acid and water according to a certain ratio. Compared with a traditional acid fracturing fluid, the acid clean fracturing fluid disclosed by the invention has the advantages that the usage of the dimeric surfactant is small (0.5-1%), the formation acidification capacity is high (the HCl concentration is 20%), the temperature resisting and shear resisting performance isgood, the sand carrying performance is good, gel breaking is easy, and there is no residue after gel breaking.
Owner:HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
Process for preparing halohydrins
ActiveCN109721467BExtended service lifeRaw material conversion rate is highPreparation by oxidation reactionsMolecular sieve catalystsHydrogen halidePtru catalyst
Owner:CHINA PETROLEUM & CHEM CORP +1
A kind of method for preparing β-haloether and β-halohydrin catalyzed by peroxidase
The invention discloses a method for preparing β-halogenated ether and β-halogenated alcohol catalyzed by peroxidase. It includes the following steps: adding hydrogen peroxide, halogen salt, and alkene shown in formula III in the buffer solution, and finally adding peroxidase, and reacting to obtain the β-halohydrin shown in formula I; when the above reaction system When also adding the alcohol shown in formula IV, the β-halogenated ether shown in formula II is obtained; in formula I, formula II, formula III, and formula IV, R 1 is alkyl, phenyl, substituted phenyl, aryl or substituted aryl; R 2 is hydrogen, alkyl, phenyl, substituted phenyl, aryl or substituted aryl; wherein, also includes R 1 and R 2 linked as cycloalkyl; R 3 is alkyl, phenyl, substituted phenyl, aryl, or substituted aryl. The raw material of the invention is simple and easy to obtain, the reaction conditions are mild, and the operation is simple and convenient.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI
Epoxy resin for flexible circuit board, preparation method and device of epoxy resin and computer equipment
The invention discloses epoxy resin for a flexible circuit board, a preparation method and device of the epoxy resin and computer equipment. The method comprises the following steps of preparing the following components in parts by weight: 30-50 parts of a hydroxyl styrene / styrene copolymer, 20-30 parts of halogenated alcohol, 10-15 parts of amino silicon oil, 15-25 parts of a curing agent, 10-20 parts of alkali liquor and 5-10 parts of dielectric filler, uniformly mixing the hydroxyl styrene / styrene copolymer, the halogenated alcohol and the amino silicon oil, adding a catalyst, heating in a temperature range of 40-80 DEG C for etherification reaction to obtain a first reactant, uniformly stirring the alkaline solution and the dielectric filler, naturally oxidizing in the atmosphere to obtain a second reactant, uniformly mixing the first reactant and the second reactant, washing with water to remove salt, and adding a curing agent for curing to obtain the epoxy resin. In the way, the dielectric property of the epoxy resin can be improved.
Owner:XIAMEN UNIV OF TECH +1
A kind of acid cleaning fracturing fluid and preparation method thereof
ActiveCN109913196BImprove temperature resistanceStrong acidifying abilityDrilling compositionAcid fracturingOrganic acid
The invention discloses an acid clean fracturing fluid and a preparation method thereof and belongs to the technical field of oil production engineering in the petroleum industry. The acid clean fracturing fluid can be obtained by using two organic acids, N,N-dimethylamino compound and halogenated alcohol as raw materials to synthesize a dimeric surfactant and then mixing and stirring the dimericsurfactant with hydrochloric acid and water according to a certain ratio. Compared with a traditional acid fracturing fluid, the acid clean fracturing fluid disclosed by the invention has the advantages that the usage of the dimeric surfactant is small (0.5-1%), the formation acidification capacity is high (the HCl concentration is 20%), the temperature resisting and shear resisting performance isgood, the sand carrying performance is good, gel breaking is easy, and there is no residue after gel breaking.
Owner:HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
Shear thickening fluid, coating, preparation methods of shear thickening fluid and coating and application of coating
PendingCN112920640AImprove hydrophobicityDescending from the agglomeration phenomenonPolyurea/polyurethane coatingsAlkaneThickened fluids
The invention discloses a shear thickening fluid, a coating, preparation methods of the shear thickening fluid and the coating and application of the coating. The shear thickening fluid comprises modified nano oxide powder and quaternary ammonium salt. The quaternary ammonium salt is obtained by carrying out quaternization reaction on an imidazole reagent and halogenated alcohol or halogenated alkane. The modified nano oxide powder is obtained by carrying out coupling grafting reaction on nano oxide powder and an amino siloxane coupling agent. According to the shear thickening liquid provided by the embodiment of the invention, due to the synergistic effect of the modified nano oxide particles and the quaternary ammonium salt, the shear thickening of the modified nano oxide powder / liquid quaternary ammonium salt at room temperature is easier to occur, and the shear thickening is more remarkable.
Owner:XIANGTAN UNIV +1
Modified alkyl glycoside high-temperature-resistant inhibitor as well as preparation method and application thereof
PendingCN113929899AImprove anti-slump performanceEase of field applicationDrilling compositionGlycosidePtru catalyst
The invention belongs to the technical field of oilfield chemical drilling fluid treating agents, and provides a modified alkyl glycoside high-temperature-resistant strong inhibitor and a preparation method and application thereof. The preparation method comprises the following steps: subjecting halogenated epoxide, polymeric glycol and alkyl glycoside to reacting under catalysis of an acid catalyst so as to obtain halogenated alcohol polyether alkyl glycoside; subjecting the halogenated alcohol polyether alkyl glycoside to reacting with organic amine to obtain amino polyether alkyl glycoside; and subjecting the amino polyether alkyl glycoside to reacting with sulfamic acid serving as a sulfonating agent to generate the modified alkyl glycoside high-temperature-resistant strong inhibitor. The modified alkyl glycoside provided by the invention comprises an alkyl glycoside group, a hydroxyalkyl group, a polyether group, an amido group and a sulfonic acid group, and has a relatively good collapse inhibition effect under a high-temperature condition. In addition, the modified alkyl glycoside provided by the invention has no biotoxicity. The modified alkyl glycoside provided by the invention can be applied to drilling fluids, is suitable for drilling construction of formations such as deep wells and ultra-deep wells with relatively high formation temperature and with shale easy to collapse, and meets the requirements for well wall stability and environmental protection of high-temperature formations.
Owner:中石化石油工程技术服务有限公司 +2
A kind of method for preparing gemini surfactant
ActiveCN105885815BReduce usageGood temperature and shear resistanceOrganic compound preparationSulfonic acid esters preparationChemical synthesisHigh resistance
The invention discloses a method for preparing a gemini surfactant by a one-pot method and belongs to the field of organic chemical synthesis. The method for preparing the gemini surfactant by the one-pot method is characterized in that the gemini surfactant is synthesized from organic acids, N,N-dimethyl amine compounds and halogenated alcohols with ionic liquid serving as a catalyst and polyalcohols serving as solvents through the one-pot method. Compared with a traditional two-step method for preparing the gemini surfactant, the method has the advantages that the method is simple in preparation technology, simple and convenient to operate, low in energy consumption and cost and extremely suitable for industrial production. When used for preparing oil-field clean fracturing fluid by serving as a thickening agent, the gemini surfactant has the advantages of high resistance to temperature and shearing, excellent sand-carrying performance without addition of a gel breaker and reverse discharging and the like.
Owner:HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
Phosphorus-containing flame retardant and preparation method thereof
ActiveCN103772740BIncrease profitLow viscosityGroup 5/15 element organic compoundsPtru catalystOrganic synthesis
The present invention relates to the field of organic synthesis, and provides a phosphorus-containing flame retardant and a preparation method thereof. The phosphorus-containing flame retardant has a chemical formula such as formula (i), and the preparation method includes the following steps: (1) combining DOPO and Dibasic carboxylic acid was added to toluene, stirred and heated to 110±2°C, reacted for 2 to 6 hours, stopped heating, and filtered the reacted solution to obtain a white solid, dried to obtain DOPO dibasic carboxylic acid derivative (2) Dissolve DOPO dibasic carboxylic acid derivatives in 2±0.2mol / L potassium hydroxide solution at a temperature of 0-40°C and stir for 1.5-2.5 hours to generate DOPO dibasic carboxylic acid derivatives Potassium salt; (3) Add a phase transfer catalyst and a halogenated alcohol to the solution prepared in step (2), react for 4 to 8 hours, pour into a separating funnel to separate layers, and remove the lower layer to obtain the phosphorus-containing flame-retardant agent. (i).
Owner:SHOUGUANG WEIDONG CHEM
Synthetic method for fluoromethylation of alcohols
The present invention relates to a method for fluoromethylation of haloalcohols. The method includes providing the formula R 1 C(CX 3 ) 2 The α-halohydrin step of OH, where R 1 selected from hydrogen, alkyl. The α-halohydrin and the chemical formula are CH 2 (OR 2 ) 2 The first compound reacts in the presence of an acid catalyst to form an acetal. The resulting acetal is chlorinated with a chlorinating agent to form the formula R 1 C(CX 3 ) 2 OCH 2 Chloride of Cl. The chloride is then converted to the chemical formula R with a fluorinating agent 1 C(CX 3 ) 2 OCH 2 Fluoride of F.
Owner:ABBOTT LAB INC
Catalyst component for ethylene polymerization in slurry process and preparation method thereof
The invention provides a titanium-containing solid catalyst component for ethylene polymerization in a slurry process. The solid catalyst component is prepared by dissolving magnesium halide in an organic epoxy compound and an organic phosphorous compound, adding electrons to form uniform solution, reacting the solution and halide of transition metal titanium or derivative solution of the halide,and after the catalyst solid is separated out, adding a halogenated alcohol compound for modification and thus obtaining the solid catalyst component. The catalyst system consisting of the titanium-containing solid catalyst component is applied to the ethylene polymerization and has high activity and high bulk density. At the same time, the obtained polymer has a relatively good particle form.
Owner:CHINA PETROLEUM & CHEM CORP +1
Preparation method of halogenated acid compound
PendingCN114230451AHigh yieldSuitable for industrial productionOrganic compound preparationCarboxylic compound separation/purificationSodium chlorateSodium chlorite
The invention discloses a preparation method of a halogenated acid compound. Specifically, the invention provides a preparation method of a halogenated acid compound as shown in a formula I. A halogenated alcohol compound as shown in a formula II is taken as a raw material and reacts with TEMPO, sodium hypochlorite and sodium chlorite, the reaction pH is regulated by carbon dioxide which is low in cost and easy to obtain, and finally the halogenated acid compound is prepared. The preparation method is high in yield, relatively low in toxicity, environment-friendly and suitable for industrial production.
Owner:上海药坦药物研究开发有限公司
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