346 results about "Halohydrocarbon" patented technology

The invention discloses a synthetic method of a water soluble ultraviolet light absorber BP-9. The method mainly comprises the following process steps: (1) carrying out methylation on the main raw materials of 2, 2', 4, 4'-tetrahydroxyl benzophenone, a transition metal salt catalyst and a mixed solvent which is prepared from dichloroethane and anhydrous ethanol in equal parts by weight to obtain 2, 2'-dihydroxyl-4, 4'-dimethoxyl benzophenone; (2) carrying out sulfonation reaction on the main raw materials of methylate, sulfamic acid and C1-C3 halohydrocarbon to obtain 2, 2'-dihydroxyl-4, 4'-dimethoxyl benzophenone-5, 5'-disulfonic acid; and (3) carrying out neutral reaction on the main raw materials of sulfonated product, inorganic base and ethanol water to finally obtain the BP-9 product. The synthetic method disclosed by the invention is few in reaction step, low in cost, high in product purity and stable in quality, and raw materials are easily available.

The invention belongs to the technical field of dielectric materials, and particularly relates to a dielectric material based on polybenzocyclobutene as well as a preparation method and application of the dielectric material. According to the multi-benzocyclobutene-based dielectric material provided by the invention, different halogenated hydrocarbon, olefin and other raw materials are used, and on the basis of containing more than two benzocyclobutene groups, a specific group can be introduced into a connecting group so as to improve the dielectric property and thermal stability of the material; meanwhile, specific groups can be introduced into R2 and R3 through secondary Heck reaction to further improve the dielectric property and thermal stability of the material, so that the dielectric material with excellent comprehensive properties such as dielectric property and thermal stability is provided, and the technical problem of lack of dielectric materials for high-frequency and high-speed printed circuit boards (PCBs) in the prior art can be solved.

The invention relates to the technical field of antibacterial high polymer materials, in particular to an antibacterial nylon material as well as a preparation method and application thereof. The method comprises the following steps: carrying out anion ring-opening copolymerization on a seven-membered ring lysine monomer obtained by ring formation of lysine and a lactam monomer to obtain copolyamide, dissolving the copolyamide, and carrying out complete quaternization reaction by using halogenated hydrocarbon to obtain the antibacterial nylon material. The preparation method provided by the invention effectively avoids the problems of insufficient antibacterial property, obvious mechanical property reduction, poor thermal stability and the like of an antibacterial nylon material prepared by hydrochloric acid protonation in the prior art. Meanwhile, the seven-membered cyclic lysine monomer can be copolymerized without alkylation, the synthesis process is greatly simplified, the production efficiency is high, and the production cost is low. The prepared antibacterial nylon material has the characteristics of lasting and efficient antibacterial performance, high safety, environment friendliness, excellent mechanical property and thermal stability and the like, and can be widely applied to the fields of textiles, daily necessities, packaging materials, panels and the like.

The invention provides a fluorine-containing thiophene compound, a preparation method thereof and an electrolyte. The structural formula of the fluorine-containing thiophene compound is as shown in formula I, R1 is fluorine or fluorosulfonyl, R2 is hydrogen, halogen, nitrile group, nitryl, C1-C6 alkyl or C1-C6 halogenated alkyl, and R3 is hydrogen, C1-C6 alkyl or C1-C6 halogenated alkyl. The fluorine-containing thiophene compound is improved on the basis of a conventional thiophene compound, fluorine or fluorosulfonyl is introduced, the defects of the conventional thiophene compound can be overcome, and when the fluorine-containing thiophene compound is used as an additive, the decomposition and oxidation reaction of an electrolyte in a high-pressure and high-temperature system can be reduced, so that the electrochemical performance of a lithium ion battery at high temperature and high pressure is improved.

The invention provides a method for preparing polyarylester by interfacial polycondensation, which comprises the following steps: dissolving a diphenol monomer in an alkali solution to prepare a bisphenol salt solution, and dissolving an interfacial catalyst in a bisphenol salt water phase to obtain a water phase; dissolving aromatic dicarboxylic acid acyl chloride in a halogenated hydrocarbon solvent to obtain an organic phase; s2, slowly adding the organic phase obtained in the step S1 into the water phase in a stirring state within 10-60 minutes, and continuously reacting for 10-120 minutes in the stirring state; the product is separated out in the form of precipitate, the precipitated precipitate absorbs the halogenated hydrocarbon solvent, so that a liquid phase main body is water, a solid phase is a muddy product containing the halogenated hydrocarbon solvent, and the obtained muddy product is filtered, washed and dried to obtain a powdery product. According to the method disclosed by the invention, the polymer is directly precipitated by controlling the solute concentration and the mixing ratio, so that the efficient in-situ removal of the solvent is realized, the solvent is directly separated from water through simple filtration, and'zero separation, zero crushing and zero distillation 'is realized.

The invention relates to an organic combined polluted underground water in-situ remediation method based on a micro-nano iron-based material. The method comprises the following steps: acquiring underground water pollution information; establishing a composite reaction zone at a preset position, and constructing a reduction-oxidation chain reaction system; and operating the composite reaction zone, collecting monitoring data, and optimizing the composite reaction zone until the composite pollution is degraded and removed to a preset value. Through series reaction of powerful reduction of the micro-nano iron-based material and advanced oxidation of the iron-based activated persulfate, the performance of the micro-nano iron-based material serving as a strong reduction material and an active agent is fully played, pollutants such as halogenated hydrocarbon in underground water are sequentially subjected to reduction degradation, pollutants such as benzene series and volatile phenol are sequentially subjected to oxidative degradation, and the pollution to the underground water is reduced. Effective management and control of underground water combined pollution of medical and chemical parks and enterprises are realized; a monitoring well is configured based on a composite reaction zone, and remediation materials are discontinuously added in combination with management and control conditions, or other management and control materials are flexibly selected, so that long-term management and control of groundwater pollution risks are realized.

The invention discloses a preparation method of a seven-membered cyclic lysine monomer and copolymerized polyamide, and relates to the field of organic synthesis. Alpha-amino-epsilon-caprolactam is obtained by taking lysine or lysine hydrochloride as an initial raw material, and then alpha-amino of an intermediate is alkylated by using alcohol under the catalysis of a catalyst to obtain a series of seven-membered cyclic lysine monomers. According to the preparation method provided by the invention, toxic and harmful reagents such as formaldehyde and halogenated hydrocarbon are not additionally introduced, and the green and environment-friendly requirements are met; meanwhile, the seven-membered cyclic lysine monomer can be copolymerized with lactam to obtain a series of copolymerized polyamides with various structures.

The invention discloses an electrolyte additive, an electrolyte and a battery, the electrolyte additive comprises a first additive and a second additive, the first additive comprises a compound shown as a formula 1: # imgabs0 #, R1 and R2 are respectively and independently selected from at least one of H, phenyl, halogen, C1-C6 alkyl, C1-C6 halogenated alkyl and # imgabs1 #, and R1 and R2 are not H at the same time; r3, R4 and R5 are respectively and independently selected from at least one of C1-C3 alkylene groups, oxygen atoms, O = S = O, C = O and S = O, at least one of R3, R4 and R5 is selected from O = S = O, C = O and S = O, and at least one of R3, R4 and R5 is selected from oxygen atoms; and the second additive comprises a compound shown as a formula 2: # imgabs2. The electrolyte additive is added into the electrolyte of the battery, so that the fast charging performance of the battery can be improved, and the high-temperature cycle performance can be improved.

The invention provides compound bacteria for biological enhancement and sludge reduction and a preparation method of the compound bacteria. The compound microbial preparation comprises 25 microbial strains capable of widely degrading organic compounds and sludge zoogloea, original strains with specific degradation capability are subjected to multi-step pure culture fermentation under limited conditions and then are compounded to obtain the compound microbial agent. The composite microbial preparation can be used for degrading various organic matters including aromatic hydrocarbons, alcohols, aldehydes, heterocyclic rings, halogenated hydrocarbons, anilines, phenols and the like and aged activated sludge zoogloea, and can be used for synergism and sludge in-situ reduction of biological systems of various industrial wastewater including municipal wastewater, petrochemical wastewater, synthetic chemistry, printing and dyeing wastewater and the like. Due to the excellent extracellular hydrolase producing function of the compound bacteria, the sludge yield of an existing biochemical system can be remarkably reduced, and in-situ reduction of the sludge is achieved.

The invention provides a high-temperature-resistant bactericidal corrosion inhibitor as well as a preparation method and application thereof. The preparation method comprises the following steps: reacting a sulfydryl carboxylic acid compound and polyethyleneimine in an organic solvent at a first temperature for a first time to obtain a system containing a first compound; and adding halogenated hydrocarbon into the system containing the first compound, reacting at a second temperature for a second time to obtain a system containing a second compound, removing the organic solvent, and drying to obtain the high-temperature-resistant bactericidal corrosion inhibitor. The high-temperature-resistant bactericidal corrosion inhibitor disclosed by the invention is prepared by the preparation method. The invention also provides an application of the high-temperature-resistant bactericidal corrosion inhibitor in microbial corrosion protection and / or chemical corrosion protection of oil and gas fields. The high-temperature-resistant bactericidal corrosion inhibitor disclosed by the invention is simple in preparation method, good in high-temperature stability and excellent in bactericidal corrosion inhibition performance.

The invention relates to the field of environmental bioremediation, in particular to a novel Desulfovibrio Co strain and application of the novel Desulfovibrio Co strain in reduction of sulfate type oxidized sulfide and degradation and conversion of 1, 1, 1-trichloroethane. The desulfurization vibrio Co strain is preserved in China General Microbiological Culture Collection Center (CGMCC) on February 24, 2024, the address is Institute of Microbiology, Chinese Academy of Sciences, No.3, No.1 Yard, Beichen West Road, Chaoyang District, Beijing, the postcode is 100101, and the preservation number is CGMCC No.41182. The desulfurization vibrio Co strain can be used for preparing the desulfurization vibrio Co strain.

The invention relates to the technical field of waste gas treatment, and particularly discloses waste gas treatment liquid for treating large-air-volume low-concentration waste gas through a water-based method. The waste gas treatment liquid for treating the large-air-volume low-concentration waste gas through the water-based method comprises a surfactant, a defoaming agent, a dissolution accelerant and water. Wherein the surfactant can be selected from any one or more of polyoxyethylene alkyl ether, polyoxyethylene alkyl ether and polyoxyethylene fatty acid ester; the dissolution accelerant can be selected from any one or more of ethylene glycol monobutyl ether, diethylene glycol monobutyl ether and triethylene glycol monobutyl ether; the defoaming agent is any one or more of butanol, dimethyl silicone oil, silicone and polyether modified polysiloxane. When the waste gas absorption liquid obtained in the invention is used for treating waste gas, the absorption efficiency of methanol, butanol, benzene, toluene, xylene, ethyl acetate, dichloromethane and acetone is obviously improved, and the absorption efficiency of the waste gas absorption liquid on aromatic hydrocarbon, halogenated hydrocarbon, alcohol, ketone and ester pollutants is improved.

The objective of the present invention is to provide a method for producing a halogenated carbonyl safely and efficiently. The method for producing a halogenated carbonyl according to the present invention is characterized in comprising the step of applying ultrasound to a composition containing a C1-4 halogenated hydrocarbon having one or more halogeno groups selected from the group consisting of chloro, bromo and iodo in the presence of oxygen to decompose the C1-4 halogenated hydrocarbon.

The invention provides antibacterial and antioxidant ultrasonic-induced piezoelectric hydrogel and a preparation method and application thereof.According to the antibacterial and antioxidant ultrasonic-induced piezoelectric hydrogel, a compound containing amido and double bonds reacts with a halogenated hydrocarbon compound through quaternization reaction to synthesize a series of cationic quaternary ammonium salt serving as an antibacterial component, and an antioxidant component is introduced; and adding the hydrogel into a hydrogel precursor solution containing acrylic acid and N-isopropylacrylamide, and synthesizing the ionized water gel with antibacterial, antioxidant and ultrasonic induced piezoelectric properties by adopting a photocuring strategy. The hydrogel shows excellent mechanical properties, good biocompatibility and adhesion, and can generate an endogenous electric field under ultrasonic excitation to regulate cell behaviors. Experimental results show that the hydrogel can effectively promote infection inhibition and alleviate oxidative stress, and has a remarkable treatment effect in diabetes infected wound and articular cartilage repair. The hydrogel is simple in preparation method, low in cost and suitable for the biomedical fields of wound treatment, tissue repair and the like.

The invention relates to a chiral ferrocene skeleton diphosphine ligand and an application thereof in a catalyst, and the disclosed ligand is a novel ferrocene skeleton diphosphine ligand, and the ligand has the advantages of low cost, simple synthesis, good stability and the like. The metal complex of the ligand shows very excellent catalytic activity in CN coupling reaction, can efficiently catalyze coupling of building blocks such as halogenated hydrocarbon and sulfonate with ammonia, amine or hydrazine compounds, and has important industrial application value.

The present invention belongs to the field of new materials. Provided are a polyether-type thiol composition and the use thereof. The polyether-type thiol composition comprises a polyether-type thiol compound and a compound as represented by formula (1), wherein the polyether-type thiol compound is mainly obtained by means of a reaction between a polyhydric alcohol, a halogenated hydrocarbon and a sulfhydrylization reagent, with the hydroxyl value of the polyhydric alcohol being 300-600 mgKOH / g; and the compound as represented by formula (1) is 0.01%-8% of the total mass of the polyether-type thiol composition. The polyether-type thiol composition can be used independently or used in a mixture with other thiol compounds; and the polyether-type thiol composition and an epoxy resin are cured under the action of an accelerant and an auxiliary agent so as to prepare an adhesive, and the adhesive can be used as a raw material to prepare a sealant. The polyether-type thiol composition can not only achieve rapid curing of an epoxy resin adhesive at room temperature, but can also improve the flexibility of an adhesive system, thereby improving the long-lasting safety of an application scenario of a sealant product in the building industry, thus maintaining the physical and psychological health of a human body for a long time.

The invention relates to the technical field of lithium ion battery safety, in particular to a supramolecular lithium battery fire inhibitor and a preparation method and application thereof. The supramolecular lithium battery fire inhibitor is prepared from the following raw materials in parts by weight: 10-50 parts of a supramolecular synergist, 30-90 parts of halogenated hydrocarbon and 0-20 parts of mineral oil, wherein the supramolecular synergist is prepared from perfluorohexanone and ethyoxyl (pentafluoro) cyclotriphosphazene. The supramolecular lithium battery fire inhibitor provided by the invention has relatively high electrical insulativity and efficient fire extinguishing characteristic, and the supramolecular acting force and fire extinguishing synergistic elements of the system are increased by introducing the supramolecular synergist, so that the stability, volatility and fire extinguishing efficiency of the inhibitor system are further improved, and the application value of the supramolecular lithium battery fire inhibitor is greatly increased.

This invention discloses a method for synthesizing dialkylphosphinates, belonging to the field of organic synthesis technology. The method uses hypophosphite and haloalkanes as starting materials. First, a hypophosphite is generated through a heated and pressurized reaction under the action of a phase transfer catalyst. The obtained hypophosphite does not require complex purification; it is directly reacted with an olefin under heated and pressurized conditions in the presence of a free radical initiator to obtain the target product, dialkylphosphinate. The method of this invention uses inexpensive and readily available raw materials, has a simple process route, includes only two core reactions, operates under mild conditions, is safe and convenient, produces few and easily treatable byproducts, has a high product yield, and is simple to purify. It is very suitable for large-scale industrial production, providing an economical and efficient synthetic route for the preparation of high-performance halogen-free flame retardants.

The invention relates to a method for preparing CBGA methyl ester, CBGA and CBG by taking methyl olive alcohol and geraniol as raw materials, and the method comprises the following steps: under the condition of a halogenated hydrocarbon organic solvent, taking geraniol and methyl olive alcohol as raw material medicines, and obtaining CBGA methyl ester under the catalysis of an acid catalyst; the method comprises the following steps: adding CBGA methyl ester into dimethyl sulfoxide and an alkaline reagent aqueous solution, and reacting to obtain CBGA or CBG.

The utility model discloses a pipette adapter and relates to the field of chemical analysis. The adapter is used for connecting a micropipettor at the upper end and a glass tube at the lower end. The adapter is mainly composed of a silica gel outer wall and a sand core filter arranged in the middle, and a cylindrical space with a certain diameter is reserved in the adapter. The adapter can be connected with glass tubes which are made of different materials and have various shapes, and halogenated hydrocarbon, ketone and aromatic hydrocarbon organic solvents can be accurately measured according to the characteristic.

The invention discloses a polyphenyl ether resin composition, a polyphenyl ether composite material and a preparation method and application thereof. The polyphenyl ether resin composition is obtained by reacting polyphenyl ether and naphthoic acid compounds in a melt, the polyphenyl ether has a repeating unit with the following structure: R1, R2, R3 and R4 are respectively and independently hydrogen, halogen, primary or secondary lower alkyl, phenyl, halogenated alkyl, alkoxy or halogenated alkoxy; the naphthoic acid compound is at least one of naphthoic acid or hydroxyl naphthoic acid. Compared with polyphenyl ether resin, the polyphenyl ether resin not only can improve the gas barrier property of the polyphenyl ether composite material in a melt, but also can improve the high-temperature injection molding processing stability of the polyphenyl ether composite material.

The present invention provides a thiadiazole compound containing a hindered phenol group, a preparation method thereof and its use in the field of lubricating oil additives. The preparation method of the thiadiazole compound containing a hindered phenol group comprises the following steps: mixing a carboxylic acid compound containing a hindered phenol group with thionyl chloride, removing impurities under reduced pressure to obtain an acyl chloride compound containing hindered phenol; stirring and mixing 2-mercapto-5-amino-1,3,4-thiadiazole with a halogenated hydrocarbon compound, filtering, washing and drying to obtain a 2-mercapto-5-amino-1,3,4-thiadiazole derivative; adding a hindered phenol acyl chloride compound, 2-mercapto-5-amino-1,3,4-thiadiazole derivative and an alkaline additive to an organic solvent, washing, drying and purifying to obtain a thiadiazole compound containing a hindered phenol group. The thiadiazole compound containing a hindered phenol group is an antioxidant, extreme pressure and anti-wear additive, which can be applied to synthetic ester lubricants and has a good antioxidant, extreme pressure and anti-wear effect.

This invention discloses a method for the simultaneous preparation of micronized and stabilized zero-valent iron (ZVFe) based on ball milling with terephthalic acid, belonging to the field of groundwater pollution remediation materials. The method includes the following steps: 1) incorporating terephthalic acid into micron-sized ZVFe powder and mechanically ball milling it; 2) cleaning the material with a solvent and drying it to obtain micronized and stabilized ZVFe reducing material. This invention simultaneously achieves the micronization and stabilization of ZVFe. This method enhances the reducing activity, internal surface hydrophobicity, and electron selectivity of ZVFe materials, improves their reducing performance and electron selectivity for pollutants such as halogenated hydrocarbons and heavy metals, effectively inhibits the oxidative deactivation of ZVFe materials in the aquatic environment and the hydrogen evolution side reaction with water, enabling ZVFe materials to maintain high reducing activity stably in water for a long period. This invention solves the technical problems of poor stability and difficult storage of micronized ZVFe materials in water, which is beneficial for reducing material replacement frequency and resource consumption.

The application discloses a cleaning method of a cauldron for preparing aluminum trihydride, which comprises the following steps: (1) under an inert gas atmosphere, adding a polyhalogenated hydrocarbon solvent and an inorganic salt abrasive into the cauldron, and stirring intensively to grind off the wall-bonding substances in the cauldron; (2) emptying the cauldron, and slowly feeding a buffer solution into the cauldron through a bottom pipe in a vacuum-extraction mode, so that the buffer solution is immersed into the cauldron from the bottom of the cauldron; and (3) sequentially using dilute alkali, dilute acid and water to completely immerse the wall-bonding layer, and then washing the cauldron with water. The method can safely and effectively remove the wall-bonding substances on the cauldron.

The present invention addresses the problem of efficiently separating and recovering a polyamide resin from a composite material containing the polyamide resin. The present invention provides a method for separating a composite material, said method comprising: preparing the composite material, which contains a first material containing a polyamide resin and a second material and a first solvent containing formic acid and a halogenated hydrocarbon; bringing the composite material into contact with the first solvent to selectively dissolve the first material in the first solvent, whereby a first mixture containing the second material and a first solution in which the first material is dissolved in the first solvent is obtained; separating the first solution and the second material from the first mixture; precipitating the first material by adding to the separated first solution a second solvent that is a poor solvent of the first material, whereby a second mixture containing the precipitated first material and a mixed solvent of the first solvent and the second solvent is obtained; and separating the deprecipitated posited first material and the mixed solvent from the second mixture.

A method of preparing an ionic liquid includes the following steps. A halogen-containing compound is reacted with a first compound to form a second compound. The halogen-containing compound includes a halohydrocarbon, a sulfonyl halide, or a combination thereof. The first compound includes an amine compound having a tertiary amine group, a phosphine compound, or a combination thereof. The second compound includes a first quaternary ammonium salt, a first quaternary phosphonium salt, or a combination thereof. The second compound and a lithium salt are reacted in a microwave device to form a third compound. The third compound includes a second quaternary ammonium salt, a second quaternary phosphonium salt, or a combination thereof. Anions of the second compound and the third compound are different. A microwave power of the microwave device is 700 watts to 1400 watts.

The utility model relates to the technical field of water pollution detection, and discloses a volatile organic compound pretreatment improvement device which comprises a bottom plate, a compression fan is fixedly connected to the right side of the top wall of the bottom plate, and an adsorption halogenated hydrocarbon cold trap device is fixedly installed at the top of the compression fan. Control knobs are rotatably installed at the left end and the right end of the front side of the top wall of the compression fan, rubber strips are fixedly connected to the outer walls of the two control knobs at equal intervals, the rear side of the top wall of the compression fan communicates with a conveying valve, the top end of the conveying valve communicates with a conveying pipe, and a flow adjusting valve is fixedly installed at the left end of the conveying pipe; and the left end of the flow regulating valve is fixedly connected with a copper pipe. According to the device disclosed by the utility model, gas is supplied into the tank body through the compression fan, so that water in the tank body can be blown by the gas with an adsorption characteristic, halogenated hydrocarbon dissolved in liquid in the tank is also adsorbed synchronously, and the condition that a test sample is interfered due to the fact that dichloromethane background is dissolved in water is avoided.

The invention relates to a process for preparing a block copolymer, the process comprising: a) adding at least one ethylenically unsaturated hydrophilic monomer and a composition Y to a reactor for polymerization; b) adding at least one ethylenically unsaturated hydrophobic monomer to the reactor for polymerization after the polymerization of step a) to obtain an amphiphilic diblock copolymer; c) adding at least one ethylenically unsaturated hydrophobic monomer to the reactor for polymerization after the polymerization of step b); wherein the composition Y contains: A) at least one halogen molecule or halogenated hydrocarbon optionally substituted by cyano, B) at least one iodide salt, and C) at least one free radical polymerization initiator, wherein the equivalent ratio of the at least one ethylenically unsaturated hydrophobic monomer in step b) to the polymer formed from the at least one ethylenically unsaturated hydrophilic monomer in step a) is in the range of 5 to 60.

The invention belongs to the technical field of biomass energy utilization, and particularly relates to a biogas fermentation system and method. The biogas fermentation system comprises a pretreatment section, a desulfurization section, a hydrolysis section, an acid production section and a methane production section which are sequentially arranged from top to bottom. A discharge pipe at the bottom of the pretreatment section penetrates through the liquid distributor to reach the middle part of the desulfurization section; the return pipe is connected with the liquid distributor through the pump; gas in the hydrolysis section enters the desulfurization section for desulfurization through a gas guide pipe and a floating valve group in the desulfurization section; gas in the acid production section enters the hydrolysis section through a gas guide pipe and a floating valve group in the hydrolysis section to be hydrolyzed; and gas in the methane production section enters the acid production section through a gas guide pipe and a floating valve group in the acid production section to be subjected to acid production treatment. According to the invention, CO2 removal, H2S removal, oxygen removal, ammonia removal, mercaptan removal, halogenated hydrocarbon removal and siloxane removal are carried out on the fermentation system through a plurality of strengthening means, so that high-quality biogas and functionalized biogas slurry are obtained.