239 results about "Trichlorobenzene" patented technology

The invention discloses a disinfection sterilization medical ultrasonic coupling medium with the bactericidal function and used in the ultrasonic detection and treatment of skin and cavitary mucosa and a preparation method of the coupling medium, wherein, the ultrasonic coupling medium comprises propylene glycol, de-ionized water and one viscosity modifier of the hydroxy ethyl cellulose, carbomer and hydroxy propyl cellulose. The coupling medium further comprises a fungicide of 0.05 to 0.15 percent and the constituents of the fungicide are any one of polyhexamethylene biguanide, benzalkonium chloride, benzalkonium bromide, chlorhexidine acetate, trichlorobenzene phenoxy diphenyl ether and nanometer silver or any combination of the olyhexamethylene biguanide, the benzalkonium chloride, the benzalkonium bromide, the chlorhexidine acetate, the trichlorobenzene phenoxy diphenyl etherand, and the nanometer silver; the preparation method used for preparing the ultrasonic coupling medium is as follows: dispersing the hydroxy ethyl cellulose in the propylene glycol, stirring and dispersing the hydroxy ethyl cellulose by adding enough water, heating to 75 to 80 DEG C, preserving the heat for 30 minutes to cool the hydroxy ethyl cellulose and the propylene glycol to 45 DEG C, adding the fungicide to stir and cool the fungicide, the hydroxy ethyl cellulose and the propylene glycol to obtain the filled coupling medium. Tests show that the products of the coupling medium have fast and long sterilization effect and meet the requirements of various related standards.

The invention relates to an antifouling paint, particularly a biologically-bactericidal acrylic resin and a novel marine antifouling paint composition prepared from the resin. The biologically-bactericidal acrylic resin is prepared from the following raw materials in percentage by mass: 0.35-0.45% of azodiisobutyronitrile, 0.38-0.48% of azodiisovaleronitrile, 0.49-1.2% of dodecamercaptan, 47-50% of butyl acetate, 2.3-3.6% of 2-hydroxyethyl acrylate, 9-10% of trichlorophenyl acrylate, 24-28% of butyl acrylate and 10-13% of isoborneol acrylate. The formula system is free of copper or tin, and thus, is a novel environment-friendly biologically-bactericidal antifouling paint.

The invention relates to a europium rare earth metal-organic frame material and a preparation method and application thereof. The chemical formula of the product is {[Eu2(L)3(DMF)2]}n. The preparation method comprises the following steps: adding 5-(4-hydroxy-1,2,4-triazolyl)-4-benzene-1,3-dicarboxylic acid and europium chloride hexahydrate into a mixed solution of methanol and DMF, and stirring uniformly to obtain a mixed solution; then charging the mixed solution into a polytetrafluoroethylene lined hydrothermal synthesis high-pressure reaction kettle, cooling and filtering after reaction to obtain colorless bulk crystals; and then repetitively washing the colorless bulk crystals with the mixed solution of methanol and DMF to obtain the metal organic frame material. The europium rare earth metal-organic frame material has the advantages of simple preparation process, mild reaction conditions, high yield and low cost; and at room temperature, chlorobenzene, 1,2-dichlorobenzene, 1,2,4-trichlorobenzene, 1,2,3,4-tetrachlorobenzene, 1,2,4,5-tetrachlorobenzene, pentachlorobenzene and hexachlorobenzene have different degrees of fluorescence quenching responses on the material, and the material has good application prospects in environmental monitoring.

The invention relates to the technical field of analytical chemistry and discloses a method for detecting afatinib dimaleate isomer and main degradation impurities through a high performance liquid chromatography.According to the method, afatinib dimaleate raw materials or preparations are compounded into a detection solution with diluent, bonding amylose-trichlorobenzene carbamic acid ester serves as a stationary phase, a normal hexane-ethanol-organic base solution serves as a mobile phase for isocratic elution, and an HPLC spectrogram is recorded under afatinib absorption wavelength.According to the method, a chromatographic column with trichlorobenzene carbamic acid ester serving as a filling material, the normal hexane-ethanol-organic base solution serves as the mobile phase, the content of isomers existing in afatinib dimaleate and preparations thereof can be measured quantitatively, afatinib, the isomers and the main impurities can be separated completely, the peak pattern is good, the method meets the specifications in Chinese Pharmacopoeia, quality of afatinib dimaleate and afatinib dimaleate preparation products is effectively controlled, and the method is great in specificity, high in sensitivity and good in accuracy.

The invention discloses a method for extracting lithium isotopes. A chelating agent and a diluent are prepared into an extractive organic phase, and the lithium isotopes are extracted from and separated out of a lithium salt water phase. Hydrophobic ionic liquid with a crown ether structure is adopted as the chelating agent and composed of positive ions and negative ions, wherein positive ions with a structural formula I and/or a structural formula II are adopted as the positive ions. One or more of PF6<->, (SO2CF3)2N<->, (SO2CF2CF3)2N<-> and BF4<-> is/are adopted as the negative ions. One or more of kerosene, octanone, chloroform, dichloromethane, carbon tetrachloride, tetrachloroethylene, nitrobenzene, methylbenzene, dimethylbenzene, diethylbenzene, bromobenzene, anisole, nitromethane, 2-methylcyclohexanone, methylisobutylketone, chlorobenzene, dichlorobenzene, trichlorobenzene and diphenyl ether is/are adopted as the diluent. The method has the advantages of being safe, green, efficient and good in stability and can be used for multi-stage enrichment and separation of the lithium isotopes.

The invention discloses a preparation method of a heat-resistant oxygen-resistant polyester film. The preparation method is characterized by including the steps of preparation of hydroxy thiophenol containing compounds, preparation of sulfur-containing hindered phenol antioxidants, polyester synthesis and film processing. The preparation method includes: using 4-hydroxy benzyl thiophenol sodium, 1, 3, 5-trichlorobenzene, 1, 3, 5-tribromobenzene and 2, 4, 6-tri(4-hydroxy benzyl thiophenyl)-1, 3, 5-triazine to synthesize the hydroxy thiophenol containing compounds, namely, 1, 3, 5-tri(4-hydroxy benzyl thiophenyl) benzene and 2, 4, 6-tri(4-hydroxy benzyl thiophenyl)-1, 3, 5-triazine in N, N-dimethyl formamide solvent; synthesizing the 1, 3, 5-tri(4-hydroxy benzyl thiophenyl) benzene, the 2, 4, 6-tri(4-hydroxy benzyl thiophenyl)-1, 3, 5-triazine and 3, 5-di-tert-butyl-4-hydroxy phenylacrylic acid methyl ester to prepare the type A reactive sulfur-containing hindered phenol antioxidant and the type B reactive sulfur-containing hindered phenol antioxidant; and synthesizing the type A reactive sulfur-containing hindered phenol antioxidant, the type B reactive sulfur-containing hindered phenol antioxidant, terephthalic acid and ethylene glycol to prepare heat-resistant oxygen-resistant polyester resin, so that the heat-resistant oxygen-resistant polyester film good in performance is prepared.

The present invention relates to oriented chlorination and fractionating process of chlorobenzene to produce high purity 1, 2, 4-trichlorobenzene and para-dichlorobenzene. Chlorobenzene and catalyst are thrown into auxiliary chlorination reactor and reacted with chlorine gas at certain temperature to produce hydrochloric acid gas, after reaction for certain time, the chlorinated liquid is fed to coarse fractionating tower for heating fractionation to fractionate mixed dichlorobenzene, and mixed dichlorobenzene is heated in the dichlorobenzene rectifying tower to fractionate para-dichlorobenzene of 99.5-99.8 % purity. Mixed dichlorobenzene and catalyst are reacted with chlorine inside main chlorinating reactor at certain temperature for certain time, the product is heated and fractionated in coarse fractionating tower to obtain semi-finished product, and the semi-finished product is heated and fractionated in the trichlorobenzene fractionating tower to obtain 1, 2, 4-trichlorobenzene product of 99.5 % purity.

The invention discloses a method for eluting and restoring 1,2,4-trichlorobenzene polluted soil by a cyclodextrin solution, which relates to a restoring method of soil organic pollution. The method comprises the following steps: (1) dissolving cyclodextrin in distilled water to prepare a cyclodextrin solution of 1.5-20g/L; (2) polluting a fresh soil sample by a 1,2,4-trichlorobenzene acetone solution to obtain a simulative polluted soil sample with a pollution load of 465.63mg/kg; (3) weighting and uniformly adding the simulative polluted soil sample into an organic glass column, adding quartzsand of 3-5 cm and a little glass wool on the lower part of the column, adding the polluted soil sample and then adding quartz sand of 1-1.5 cm and a little glass wool on the polluted soil sample; eluting the organic glass column with the soil from above down by the cyclodextrin solution; (4) adding active carbon in a container, then adding the cyclodextrin solution containing 1,2,4-trichlorobenzene after eluting, shaking the container for 24h by a shaking table, and then purifying the cyclodextrin solution through a filter with a glass fiber film for standby. The removal rate of the 1,2,4-trichlorobenzene in soil can reach 52-78 percent.

The invention relates to the field of crosslinked polyethylene, and discloses a crosslinkable polyethylene composition, crosslinked polyethylene, a preparing method, a product and an application. The composition comprises polyethylene, wherein the mass fraction of trichlorobenzene dissolving deposition of 90 DEG C of the composition is 49% to 83%; the composition is heated for 10 min to 20 min at the temperature of 180 DEG C to 200 DEG C and subjected to crosslinking, the content of gel of the obtained product is smaller than 20% in weight. By means of the crosslinkable polyethylene composition, the crosslinked polyethylene which is high in rigidity and capable of remarkably improving the impacting performance is obtained, and can be applied in polymer welding.

The invention discloses a synthesis method of 3,5-dichloroaniline. 1,3,5-trichlorobenzene serves as a raw material, alkali or an ammonia solution or ammonium salt is added into an organic solvent to serve as an ammonia source, a coupling reaction is generated under the effect of a transition metal catalyst and ligand, and the product 3,5-dichloroaniline is obtained. According to the method, the raw materials are simple and easy to obtain, the cost is low, synthesis steps are simple, the product 3,5-dichloroaniline can be obtained through direct coupling of 1,3,5-trichlorobenzene and the ammonia source only through a one-step reaction, fewer byproducts are generated, fewer three wastes are generated, environmental friendliness is achieved, upgrading of the product process is achieved, and great significance is achieved for reducing the synthesis cost of 3,5-dichloroaniline and derivatives thereof.

A film-forming composition that contains a tricarbonyl-benzene hyperbranched-polymer cross-linker and a triazine-containing hyperbranch, as shown for example in the formula, can form a thin film that excels in terms of hardness and heat tolerance and exhibits a reduced decrease in index of refraction despite the addition of the cross-linker.

The invention relates to an insulating heat conduction coating, which comprises the following components in part by weight: 110 to 180 parts of organic solvent, 100 to 150 parts of plastic substrate and 30 to 50 parts of inorganic filler, wherein the organic solvent is one or a mixture of more than two of tetralin, trichlorobenzene, dimethylbenzene, cyclohexanone, acetate, ethane, benzene and trichloromethane; the plastic substrate is one or a mixture of more than two of polypropylene plastics, polyethylene plastics and polyphenylene sulfide plastics; and the inorganic filler is one or a mixture of more than two of magnesium oxide powder, aluminum oxide powder and silicon carbide powder. A preparation method for the insulating heat conduction coating comprises the following steps of: performing hot melting, stirring and mixing. The insulating heat conduction coating serving as a main layer is coated in an inner cavity of a metal shell of a lithium ion battery, so that the heat dissipated by the battery in the using process can be led out quickly; and the integral shell is insulated from the battery to prevent electrolyte in the long-term using process from corroding the metal shell, so the thermorunaway and sealing failure of the lithium ion battery can be reduced effectively.

The invention discloses a hyperbranched POSS flame retardant and a preparation method and applications thereof. The hyperbranched POSS flame retardant is prepared by the following steps: performing hydrolysis reaction on octaphenyl polyhedral silsesquioxane under alkaline condition to obtain heptaphenyl trisilihydroxyl polyhedral silsesquioxane, then reacting the heptaphenyl trisilihydroxyl polyhedral silsesquioxane with 1,3,5-trichlorobenzene to obtain a hyperbranched POSS intermediate, finally reacting the obtained hyperbranched POSS intermediate with AB2 monomer. Through tests, the flame retardance performance, mechanical performance, heat-insulating and smoke inhibition performances of a silicon rubber flame-retardant composite material of the hyperbranched POSS flame retardant are obviously improved, so that the hyperbranched POSS flame retardant has wide application prospects. In addition, the preparation technique is economic and practical, the preparation process is simple, the cost is low, special equipment and harsh conditions are not needed, large-scale production is easily realized, and high practical values can be achieved.

The invention relates to a high-melt-strength anti-impact polypropylene foamed board. The foamed board is prepared through foaming with high-melt-strength anti-impact polypropylene as matrix resin. The high-melt-strength anti-impact polypropylene comprises a random copolymerization polypropylene continuous phase and a rubber dispersed phase of propylene-ethylene copolymer, wherein the content of room temperature dimethylbenzene soluble substances of the high-melt-strength anti-impact polypropylene is larger than 10 wt% and smaller than 35 wt%, and the ratio of Mw of room temperature trichlorobenzene soluble components to Mw of room temperature trichlorobenzene insoluble components is larger than 0.4 and smaller than 1. The invention further relates to a preparation method of the foamed material. The foamed material has higher melt strength, so foamed products with higher foaming ratio and better surface smoothness can be obtained, and the foamed material also has the characteristics of being high in rigidity, high in toughness and the like. Meanwhile, the foamed board has the advantages of being good in high-and-low-temperature anti-impact performance, high in physical heat resistance, high in percentage of close area, good in heat insulation and sound isolation performance, controllable in foaming ratio and foam pore structure and the like.

The invention discloses a method for catching and detecting static headspace gas chromatography electrons of eleven chlorobenzene compounds in water, which belongs to the field of a water pollution detection technology. Eleven chlorobenzene compounds are as follows: 1, 4-dichlorobenzene, 1, 3-dichlorobenzene, 1, 2-dichlorobenzene, 1, 3, 5-trichlorobenzene, 1, 2, 4-trichlorobenzene, 1, 2, 3-trichlorobenzene, 1, 2, 3, 4, 5-tetrachlorobenzene, 1, 2, 4, 5-tetrachlorobenzene, pentachlorobenzene and hexachlorobenzene. According to the method, a water sample containing 20% of sodium chloride is added into a 20mL of headspace bottle, an aluminium cover containing PTFE (polytetrafluoroethylene) is utilized to seal instantly, and 800 [mu] L of gas in a top space of the headspace bottle is taken to detect in a gaschromatograph after the headspace bottle added with the water sample is balanced with the vibrating speed of 500rpm for 30 min at 70 DEG C. A detection limit of the eleven chlorobenzene compounds is 0.0002-0.04 [mu] g/L, and the recovery rate is 83-116%. The method provided by the invention is environmentally friendly, free of organic solvent, simple to operate, wide in linear range, good in repeatability, high in recovery rate and is capable of quickly detecting the concentration of the chlorobenzene compounds in water.

The invention discloses a method for detecting chlorobenzene in sludge through ultrasonic assisted dispersive liquid-liquid microextraction-gas chromatography. The method comprises the steps of (1) preparation of a standard solution, namely preparing 0.1milligram/ml of standard mixed solution comprising m-dichlorobenzene, o-dichlorobenzene, 1,2,4-trichlorobenzene, 1,2,3-trichlorobenzene, 1,2,4,5-tetrachlorobenzene, and 1,2,3,4-tetrachlorobenzene; (2) ultrasound-assisted extraction, namely putting 1.0g of a sludge sample into a cone centrifuging tube with a turncap, adding acetone, sealing, extracting by ultrasounds, centrifuging extract liquor, then filtering supernate by a microfiltration membrane, and moving into the cone centrifuging tube; (3) dispersive liquid-liquid microextraction; and (4) gas chromatography. The method for detecting the chlorobenzene compounds in the sludge has the high sensitivity. Compared with conventional detection methods such as a soxhlet extraction method, the method saves a large amount of organic solvent being toxic and harmful to human bodies, and little time is used in analysis, so that the method is applicable to the detection on a large quantity of sludge samples.

The invention provides a method for preparing dichlorobenzene and trichlorobenzene and increasing the para-ortho ratio, and is characterized in that a chlorination reaction takes benzene or chlorobenzene as a raw material; a continuous chlorination reaction is carried out in the presence of a main catalyst and an auxiliary agent, through a ring type continuous chlorination reactor or a multi-stage series-connection kettle type reactor and under the conditions of the reaction temperature of 50-120 DEG C and the reaction pressure of -0.05-0.5 MPa; and a reaction liquid passes through a membrane filtration system, the main catalyst remains in the reactor for reaction, a dichlorobenzene clear liquid after filtration is subjected to light component removal, rectification and crystallization to obtain dichlorobenzene, orthodichlorobenzene, 1,2,3-trichlorobenzene and 1,2,4-trichlorobenzene finished products. Compared with a conventional dichlorobenzene preparation process, the method has the dichlorobenzene para-ortho ratio greatly increased to 8.5 and the trichlorobenzene para-ortho ratio greatly increased to 13.6, and has the advantages of low use cost of the catalyst auxiliary agent, continuous production realization, good product selectivity and the like.

The invention provides an impact-resistant polypropylene material with high melt strength and a preparation method therefor. The polypropylene material comprises a propylene homopolymer component and an ethylene-1-butylene copolymer component; the weight ratio of the ethylene-1-butylene copolymer component to the propylene homopolymer component is (11-80): 100, and the content of butylene in an ethylene-1-butylene copolymer is higher or equal to 20wt% and is lower or equal to 45wt%; and the ratio of room-temperature trichlorobenzene soluble Mw of the material to room-temperature trichlorobenzene insoluble Mw of the material is greater than 0.5 and is smaller than or equal to 1. The polypropylene material provided by the invention has high melt strength, also has the characteristics of high rigidity and high toughness and is extensive in application, for example, is applicable to the fields of automotive parts, medical appliances, household items and the like.

An organic semiconductor thin film exhibiting high mobility and a method for preparing the same, and a material for preparing the organic semiconductor thin film by a wet process and a method for preparing the same are provided. Further, an organic semiconductor device excellent in electronic characteristics is provided. A mixture of high purity pentacene and 1,2,4-trichlorobenzene was heated to prepare a homogeneous solution, and a silicon substrate having a pattern of a gold electrode as a source/drain electrode formed thereon was heated to 100° C. and the resultant pentacene solution was spread on the surface of the substrate. When 1,2,4-trichlorobenzene was evaporated, a pentacene thin film was formed. A transistor was formed with the use of the thin film.

The invention discloses a method for purifying 1,2,4-trichlorobenzene from a trichlorobenzene mixture, and belongs to the technical field of fine chemical engineering. The method comprises the steps that firstly, trichlorobenzene is mixed in a melt crystallization device, the temperature is lowered to 0 DEG C from room temperature, and uncrystallized mother liquid is drained; secondly, crystallized solids are sweated by increasing the temperature from 0 DEG C, wherein the sweating temperature is 0 DEG C-11 DEG C, the average temperature increasing speed is 0.025 DEG C/min-0.035 DEG C/min, and sweating does not stop until the total mass of sweat generated through sweating accounts for 1/9-1/2 of the mass of the crystallized solids in the melt crystallization device; lastly, the sweat is drained, the crystallized solids in the melt crystallization device are melted by increasing the temperature, and then 1,2,4-trichlorobenzene is obtained. According to the method, 1,2,4-trichlorobenzene is separated out in the mode of melt crystallization and gradual temperature-increasing sweating, and the advantages of being simple in method, low in cost, high in efficiency and suitable for industrialized production are achieved.

The invention discloses a method for preparing triclabendazole sulfoxide. According to the method, 1,2,3-trichlorobenzene serves as a starting raw material, and the use of 2,3-dichlorophenol with strong sensitization and high price is avoided; and the requirements for reaction conditions are low, the product yield reaches 81.5%, the purity reaches over 99%, and no pollution is caused, so that the method is suitable for large-scale industrial production.