1072 results about "Dichlorobenzene" patented technology

Solvent mixtures useful for processing bulk heterojunction materials and methods for selecting the same are disclosed, wherein Hansen solubility parameters are utilized to select the solvent mixture. A solvent system using a fully nonhalogenated solvent mixture is disclosed. Also disclosed is a solvent mixture containing 20 vol. % acetophenone (AP) in mesitylene (MS), wherein the performance of the solvent system is comparable to dichlorobenzene.

The present invention is directed to crystal forms of the 5-HT2C agonist (S)-(8-(2,6-dichlorophenyl)-6-fluoro-2,3-dihydrobenzo[b][1,4]dioxin-2-yl)methanamine hydrochloride, as well as compositions, processes of preparation, and uses thereof.

The invention relates to neutral mononuclear copper (I) complexes for emitting light and with a structure according to formula (A) in which: M represents: Cu(I); L∩L represents: a single, negatively charged, bidentate ligand; N∩N represents: a diimine ligand (substituted with R and FG), in particular a substituted 2,2′-bipyridine derivative (bpy) or a substituted 1,10-phenanthroline derivative (phen); R represents: at least one sterically demanding substituent for preventing the planarisation of the complex in the excited state; FG=functional group, and represents: at least one second substituent for increasing solubility in organic solvents. The substituent can also be used for electron transport or alternatively for hole transport, said functional group being bound to the diimine ligands either directly or by means of suitable bridges; and the copper (I) complex: having a ΔE(S1−T1) value of less than 2500 cm−1 between the lowest excited singlet state (S1) and the triplet state (T1) which lies below; having an emission lifespan of at most 20 μs; having an emission quantum yield of greater than 40%, and a solubility of at least 1 g / L in organic solvents, in particular polar organic hydrocarbons such as acetone, methyl ethyl ketone, benzene, toluene, chlorobenzene, dichlorobenzene, dichloromethane, chloroform, dichloroethane, tetrachloroethylene, alcohols, acetonitrile or water.

The invention discloses a carbon nanotube cotton and a preparation method thereof, belonging to the technical field of synthesis and application of carbon nanomaterials. The carbon nanotube cotton in the invention is a macro-body material with a disorderly network-like porous structure, and the carbon nanotube cotton is formed by mutually winding and lapping a plurality of carbon nanotubes. The carbon nanotube cotton has the advantages of super-low density, super-hydrophobicity, good absorption, good cycle compressibility, good shape memory function and good thermal insulation. The carbon nanotube cotton can be used as the material for energy absorption, shock absorption, thermal insulation, sound absorption, toxic organic solvent absorption, oil-water separation, filtration and the like. The carbon nanotube cotton is directly produced by the catalytic cracking method, dichlorobenzene is taken as a carbon source, and ferrocene is taken as a catalyst. The preparation method has simple process and simple operation and is applicable to mass production.

In a toner having a polyester resin as a binder resin component, and a colorant, the toner contains (a) in the binder resin component, from 20.0% by weight to 65.0% by weight of a tetrahydrofuran-insoluble matter A1 in 6-hour extraction and from 35.0% by weight to 80.0% by weight of a tetrahydrofuran-soluble matter A2 in 6-hour extraction, (b) in the binder resin component, from 10.0% by weight to 30.0% by weight of a tetrahydrofuran-insoluble matter B1 in 16-hour extraction and from 70.0% by weight to 90.0% by weight of a tetrahydrofuran-soluble matter B2 in 16-hour extraction, and (c) in the binder resin component, from 0.5% by weight to 3.0% by weight of an orthodichloro-benzene-insoluble matter C1 in 6-hour extraction at 185° C. and from 97.0% by weight to 99.5% by weight of an orthodichlorobenzene-soluble matter C2 in 6-hour extraction at 185° C. The proportion of C1 to B1, C1 / B1, is from 0.06 to 0.15, and the A1, B1 and C1 satisfy the following expression (1):A1>B1>C1.  Expression (1)A process cartridge makes use of this toner.

The invention discloses a method for preparing chloro-substituted diphenyl ether or polychloro-substituted diphenyl ether. A target compound is generated by dichlorobenzene and phenol or fortified phenol which are added or not added with an organic solvent in the presence of a chlorine hydride absorbent for an Ullmann reaction under the catalysis of a catalyst; the chlorine hydride absorbent is one or more of sodium hydroxide, potassium hydroxide, sodium carbonate or potassium carbonate; the solvent is a polar or non-polar organic solvent, and the using amount of the solvent accounts for 0 to 50 percent of total reaction materials; and the catalyst is iodide or a copper compound or a mixture of the iodide and the copper compound. The method has the advantages that the method adopts the optimized mixture ratio of raw materials, a mixed solvent system and a copper catalyst with a nano-grain diameter, and ensures that the reaction rate is accelerated and a product has high yield.

Disclosed is a method for synthesizing a fibre-grade polyphenylene sulphide resin, comprising synthesizing via a polycondensation reaction by using a sodium hydrosulphide solution and p-dichlorobenzene as raw materials, N-methyl-2-pyrrolidone as a solvent, and a C5-C6 fatty acid salt formed by dehydration of a C5-C6 fatty acid and sodium hydroxide as an auxiliary for the polycondensation reaction. The reaction liquid is subjected to acidification and washing to obtain a white polyphenylene sulphide resin, the melt flow rate of the product is less than 125 g / 10 min, the weight-average molecular weight measured by GPC is greater than 4.2 × 104, and the whiteness is higher than 90, meeting the requirements of the fibre-grade polyphenylene sulphide resin. In the method of the present invention, the C5-C6 fatty acid salt used has good solubility in NMP and can better promote the polycondensation reaction, all of it enters a filtrate after reaction and filtration, and it is again converted into a free fatty acid through acidification with hydrochloric acid; and the C5-C6 fatty acid can co-boil with water, has low solubility in water, and can be recovered from the filtrate by the method of co-boiling with water, thereby avoiding the problem that both the auxiliary and sodium chloride are dissolved in water and cannot be separated and recovered.

An herbicidal composition containing (a) aminopyralid and 2,4-D and (b) atrazine provides synergistic control of selected weeds in corn, sorghum, sugar cane and range and pasture.

The invention belongs to the technical field of polymer solar cells and particularly relates to a reciprocal form electrode polymer solar cell using TiO2 as an electronic transmission layer, CuPc as a cavity transmission layer and a preparation method thereof. The method includes the steps of: using sol-gel technology to grow a layer of uniform and compact nanocrystal titanium dioxide (TiO2) film on an ITO glass substrate, then spin-coating a layer of P3HT:PCBM solution dissolved by dichlorobenzene, after annealing, using thermal evaporation to grow a layer of CuPc with certain thickness and finally evaporating Au electrode. The polymer solar cell prepared by utilizing the method solves two problems of the traditional polymer solar cell, namely that the mixed solution of 3, 4-EDOT and polystyrolsulfon acid corrode the surface of ITO glass, and the excessive thinness of cathode buffer layer LiF causes the operating process to be difficult to be controlled accurately.

The invention relates to a detection method for plant growth regulator residues in fruits. The detection method comprises the following steps: the QuEChERS method is adopted to extract and purify the plant growth regulator residues in fruits, so as to enable the adding standard recovery rate of the target compound to reach 71%-98%; the RSD ( relative standard deviation) is not higher than 6%; the sensitivity and selectivity are favorable and the recovery rate is stable; the liquid chromatograph tandem mass spectrogram detection method is adopted to simultaneously detect forchlorfenuron, ethephon, 4-sodium chlophenoxycetate and 2,4- sodium acetate-dichlorobenzene oxygen; the detection limits range from 0.5 microgram / kg to 100 microgram / kg respectively; the sensitivity requirement of national limited standard is met. The detection method has favorable sensitivity and selectivity and can serve as a method for detecting the plant growth regulator residues in fruits.

The invention discloses a hollow glass micro-spheres surface modification method. The specific steps of the method are: (1) acetone or ethanol are used for washing the surfaces of hollow glass micro-spheres, such that dirt is removed; and a sodium hydroxide solution is used for treating, such that the surfaces of the hollow glass micro-spheres are hydroxylated; (2) the surface-hydroxylated hollow glass micro-spheres obtained in the step (1) are treated by using an ethanol-water mixed solution containing kh550; with hydrolysis of a silane coupling agent and condensation of silanol, the material is grafted on the surface of the hollow glass micro-spheres; (3) the hollow glass micro-spheres obtained in the step (2) are subjected to phosgene treatment in dichlorobenzene, such that the surface amino groups of the hollow glass micro-spheres are subjected to isocyanate modification; and with the reaction of isocyanate and hydroxyl, polyethylene glycol is grafted on the surfaces of the hollow glass micro-spheres. The hollow glass micro-spheres provided by the invention can be better dispersed in epoxy resin. Bonding strength and acting force between epoxy resin and glass micro-spheres can be improved, and strength and toughness of an epoxy resin composite material can be further enhanced.

The invention relates to an industrial production method for semi-crystal poly(aromatic ether nitrile), which belongs to the field of polymer material. The method comprises the following steps: 2, 6-dichloro benzonitrile and hydroquinone are taken as raw materials; anhydrous potassium carbonate is taken as a catalyst; in the presence of a solvent and a dehydrating agent, the raw materials and the catalyst react under atmospheric pressure to obtain the poly(aromatic ether nitrile) homopolymer with low molecular weight and regular chain segments; and then the molecular weight of polymer is increased through pressurization, so as to obtain the semi-crystal poly(aromatic ether nitrile) polymer with high molecular weight. Due to the increase of crystallinity and molecular weight, the mechanical properties and heat resistance of the semi-crystal poly(aromatic ether nitrile) polymer are obviously improved.

The invention discloses auxiliary-addition-free polyphenylene sulfide resin industrial synthetic process. The formula of raw materials required in the auxiliary-addition-free polyphenylene sulfide resin industrial synthetic process is as follows: the mole ratio of sodium sulfide to sodium hydroxide to santochlor to N-methyl-2-pyrrolidinone is 0.93-1.15 to 1.00-1.28 to 1.98-2.98 to 1.18 to 1.48. The industrial synthetic process mainly comprises the following steps: firstly, in a sodium hydrosulfide dehydration treatment stage, a pipeline filter is adopted to filtrate a sodium hydrosulfide solution to treat mechanical impurities in the solution, then a sodium hydroxide solution with the concentration 84 mol percent is added in the formula for chemical treatment on the sodium hydrosulfide; secondly, in the condensation polymerization stage, anaerobic deionized water is added to further appropriately adjust the molecular weight and molecular weight distribution coefficient of synthesized polyphenylene sulfide resin; thirdly, deionized water is adopted for repeatedly scrubbing for 3 to 6 times, and finally, the target product of the auxiliary-addition-free polyphenylene sulfide resin industrial synthetic process provided by the invention is obtained. The resin in the obtained product of the auxiliary-addition-free polyphenylene sulfide resin industrial synthetic process is low in polydispersity index and high in oxygen index, and has an excellent electrical insulation property.

The invention discloses a silicone rubber insulating fluororubber cable material and a preparation method thereof. The silicone rubber insulating fluororubber cable material comprises the following raw materials in parts by weight: 90-100 parts of methyl vinyl silicone rubber, 20-30 parts of magnesium hydroxide, 40-60 parts of SBS (Styrene Butadiene styrene), 50-60 parts of ethylene-vinyl acetate copolymer, 20-30 parts of polytetrafluoroethylene, 1-4 parts of precipitated white carbon black, 60-80 parts of light calcium carbonate, 2-4 parts of 2,4-dichlorobenzoyl, 3-5 parts of accelerant DM, 3-6 parts of 2-thiolbenzimidazole, 1-3 parts of cross-linking agent TAC, 2-4 parts of calcium stearate, 2-4 parts of antioxidant DSTP, 1-5 parts of stearoyl-rac-glycerol, 2-5 parts of stearic acid and 10-20 parts of ammonium polyphosphate. According to the invention, the preparation method is simple, the electric performance is superior, the formula of the raw materials is rational, and the prepared cable material is environment-friendly, has the advantages of softness, wear resistance, watertightness and the like, and passes the A-level fire resistance test in China.

The invention discloses a preparation method for anthelmintic benzimidazole fenbendazole. The method is characterized in that: p-dichlorobenzene is used as a starting raw material which is subjected to nitration, amination, condensation, reduction and ring-closure reactions so as to obtain fenbendazole (the content of the final product being 98% to 101%). The novel preparation method has the characteristics of a simple and highly efficient process and safe operation, and is suitable for industrial production.

The present invention relates to a composite of a porous substrate and one-dimensional nanomaterial, which is manufactured by a hydrothermal method. The method for manufacturing the composite of the present invention is simple and low-cost, and the one-dimensional nanomaterial is homogeneously distributed on the porous substrate with tight binding at the interface. The present invention also relates to a surface-modified composite and a method for preparing the same. The composite of the present invention which is hydrophobically modified at the surface can adsorb organic solvents such as toluene, dichlorobenzene, petroleum ether and the like, and greases such as gasoline, lubricating oil, motor oil, crude oil and the like, with a weight adsorption ratio of >10.

The invention discloses a dopamine derivative, a molecular imprinted polymer and preparation methods and application thereof. The dopamine derivative comprises dansyl dopamine, carbazole sulfonyl dopamine and the like. The dopamine derivative is synthesized from a fluorescent color former precursor and dopamine through sulfonation reaction. The fluorescent molecular imprinted polymer is prepared by using the fluorescent dopamine derivative, integrates specific sample pretreatment and fluorescence detection and is linked with an ELISA (Enzyme-Linked Immuno Sorbent Assay) plate, so as to form a fluorescent sensor, and series acidic organic pollutants, including bisphenol A and 2,4-dichlorophenoxyacetic acid, in an environmental water sample are directly assayed according to the change of fluorescence quenching values before / after sample application.

The rooting agent suitable for stem planting of golden camellia branch consists of 2, 4-dichloro phenoxyacetic acid, 3-indole butyric acid, sodium guaiacol mononitrate, sodium hydroxide and borax. It is diluted before being used for stem planting of golden camellia branch in spring, summer and autumn, and survival rate of golden camellia seedling may reach 93-98 %. The present invention makes it possible to protect, develop and utilize golden camellia via fast industrial seedling growing.

The invention relates to a polyamide-imide insulating varnish. The polyamide-imide insulating varnish is characterized in that the varnish comprises the following components in parts by weight: 100-120 parts of polyamide-imide solution and 2-5 parts of sepiolite material, wherein the polyamide-imide solution mainly comprises the following components in parts by weight: 20-35 parts of polyamide-imide resin and 20-60 parts of organic solvent; the organic solvent is one or a combination of N-methylpyrrolidone, chlorobenzene, bromobenzene, dichlorobenzene, dibromobenzene, 1-tetralone, fenchone, phorone and isophorone; and the sepiolite material mainly comprises sepiolite. The polyamide-imide insulated enamel wire provided by the invention forms a homogeneous stable system, the surface friction coefficient is below 0.30, and each index meets the International Electrotechnical Commission (IEC) standard requirement; and the polyamide-imide insulating varnish is suitable to be used as the enamel wire insulating varnish for coating the surface of the copper wire.

A combination comprising (a) a compound of formula (0): or salts or tautomers or N-oxides or solvates thereof; wherein X is R1-A-NR4— or a 5- or 6-membered carbocyclic or heterocyclic ring; A is a bond, SO2, C═O, NR9(C═O) or 0(C═O) wherein R9 is hydrogen or C1-4 hydrocarbyl optionally substituted by hydroxy or C1-4 alkoxy; Y is a bond or an alkylene chain of 1 to 3 carbon atoms; R1 is hydrogen; a carbocyclic or heterocyclic group having from 3 to 12 ring members; or an optionally substituted C1-8 hydrocarbyl group wherein 1 or 2 of the carbon atoms of the hydrocarbyl group may optionally be replaced by an atom or group selected from O, S, NH, SO, SO2; R2 is hydrogen; halogen; C1-4 alkoxy; or a C1-4 hydrocarbyl group optionally substituted by halogen, hydroxyl or C1-4 alkoxy; R3 is selected from hydrogen and carbocyclic and heterocyclic groups having from 3 to 12 ring members; and R4 is hydrogen or a C1-4 hydrocarbyl group optionally substituted by halogen, hydroxyl or C1-4 alkoxy; and (b) a compound of formula (I′″) or salts, tautomers, solvates and N-oxides thereof: wherein R1 is 2,6-dichlorophenyl; R2a and R2b are both hydrogen; and R3 is a group: formula (A) where R4 is C1-4 alkyl.

The invention relates to a method for preparing 6-chloro-3-aminotoluene-4-sulfoacid (hereinafter referred to as CLT acid) in a direct nitrification way by taking o-chlorotoluene as a raw material. The method comprises the following steps of: obtaining o-chlorotoluene nitrate by taking acidic Beta zeolite as a catalyst and acetyl nitrate as a nitrifying agent; reducing the o-chlorotoluene nitrate by utilizing iron powder; recrystallizing the reduced product and separating out 6-chloro-3-aminotoluene crystal and 6-chloro-4-aminotoluene containing little 6-chloro-3-aminotoluene by adopting an acid extraction method; adding dichlorobenzene and sulfuric acid in the 6-chloro-3-aminotoluene crystal, and carrying out sulfonation at 170-190 DEG C to obtain the CHLOROT acid; and carrying out sulfonation on the 6-chloro-4-aminotoluene containing little 6-chloro-3-aminotoluene to obtain 2B acid containing little CLT acid. The invention has the characteristics of low pollution, high yield, simple process, low device requirements, and the like.

The invention discloses a method for preparing chlorobenzene, p-dichlorobenzene and o-dichlorobenzene in benzene chlorination, and relates to a preparation method of chemical raw materials. The method comprises the following steps: continuously introducing dry benzene and chlorine with a high activity and high p-dichlorobenzene selectivity catalyst into an outer circulation reactor, wherein the benzene and chlorine need sufficient retaining time, reacting at a set temperature to prepare p-dichlorobenzene, obtain o-dichlorobenzene at the same time and co-produce chlorobenzene, preparing dichlorobenzene by using the outer circulation reactor and taking the benzene and the chlorine as raw materials and metal sulfide as a catalyst, at the same time co-producing chlorobenzene, forming circulation of the materials through the introduced nitrogen and generated hydrogen chloride as power so as to obtain good stirring for prompting mixing, diffusion, heat conduction and mass transfer of the reactants. The method is rapid in reaction speed, high in capacity, large in ratio of p-dichlorobenzene and o-dichlorobenzene, free of polychlorobenzene byproduct, and high in flexibility and operation flexibility as the ratio of the chlorobenzene to the dichlorobenzene in a product can be adjusted according to demands.

The invention discloses a preparation method of a conjugated three-dimensional porphyrin-based covalent organic framework material. The preparation method comprises the following steps: taking 3,3', 5,5'-tetra (4-formylphenyl) hexamethylbiphenyl (TFBM) and a series of porphyrin derivatives as raw materials, o-dichlorobenzene and n-butanol as solvents and acetic acid as a catalyst, and carrying outsolvothermal reaction for several days; after the reaction is finished, sequentially using DMF and THF for suction filtration and washing, carrying out soxhlet extraction for 24 hours, and carrying out vacuum drying to obtain purple black powder, namely the target product. For the first time, tetrahedral tetraaldehyde based on steric hindrance effect is used as a building block, so that the material has a fully conjugated three-dimensional skeleton structure, good thermal stability and chemical stability, and porphyrin units facing three-dimensional pore channels are used as single active catalytic sites, so that the material shows good application prospects in the field of bionic catalysis.

The invention belongs to the technical field of using an electrochemical method for processing organic-polluted waste water, and in particular relates to a microwave electrochemical method for processing waste water and devices. A boron-mixed diamond membrane electrode which has stable work under microwave action is used as an anode material of electrochemical degradation processing of the invention. Devices comprise a thermostatic bath, a peristaltic pump, a flow meter, a reactor, a boron-mixed diamond membrane electrode (anode), a titanium electrode (cathode) and a microwave oven. The invention uses microwaves for promoting the mass transferring process of organic pollutants, activates the boron-mixed diamond membrane electrode, improves electrode activity and accelerates the velocity ofelectrochemical oxidizing reaction. Compared with that of the pure electrochemical oxidization, in the same time, the removal rate of 2,4-dichlorphenoxyacetic acid of the invention is increased by 152 percents. The method has simple operation, and has good processing effect on organic waste water, and wide application prospect and developing potential.

The present invention generally relates to a method for minimizing the formation of insoluble salts of phenoxy herbicides. The method comprises (1) mixing a compatibility agent, amine salts of phenoxy acid herbicides, and a chemical containing non-amine cations in a aqueous system to form a stable and non-nozzle plugging solution; and (2) application of said stable and non-nozzle plugging solution onto target plants.

The invention relates to a preparation method of bromoamine acid, which comprises the following steps: (1) sulfonation reaction: by using 1-aminoanthraquinone as a raw material, dropwisely adding chlorosulfonic acid into an orthodichlorobenzene solvent to carry out sulfonation reaction so as to obtain the sulfonated material containing sulfonated product, wherein the weight ratio of the 1-aminoanthraquinone to the orthodichlorobenzene is 1:(5-7), and the temperature of the sulfonation reaction is 115-150 DEG C; (2) stratification by adding dilute sulfuric acid: after the sulfonation reaction reaches to the end, directly adding 55-60 wt% dilute sulfuric acid into the reaction system until the sulfonated material stratifies, wherein the upper stratum is an orthodichlorobenzene organic phase which can be used repeatedly, and the understratum is a sulfuric acid solution of 1-aminoanthraquinone-2-sulfonic acid; and (3) bromination reaction: adding water into the understratum material obtained in the step (2) until the acidity reaches to 8-10%, and directly dropwisely adding bromine to carry out bromination reaction, thereby obtaining the bromoamine acid crude product. The invention greatly lowers the energy consumption; and the quality and yield of the bromoamine acid product are obviously enhanced.

Bis(halophthalimides) are prepared in mixture in an organic liquid such as ortho-dichlorobenzene or anisole, by a reaction at a temperatire of at least 150° C. between at least one diamine compound and at least one halophthalic anhydride in the presence of imidization catalyst. The reaction mixture is maintained at about 15% by weight solids content and rich in the halophthalic anhydride by constantly monitoring the reaction mixture using analytical methods such as high performance liquid chromatography. The product mixture may be directly employed in the direct preparation of polyetherimides, and similar slurries may be employed to prepare other polyether polymers.

The invention discloses a novel compound 3,3'-(3,4-dichlorobenzylidene)-bis-4-hydroxycoumarin with a strong antibacterial effect which is optimized by transforming the structure of bishydroxycoumarin compounds, and provides a preparation method thereof, wherein the chemical structure and crystal structure are obtained. The novel compound 3,3'-(3,4-dichlorobenzylidene)-bis-4-hydroxycoumarin has an antibacterial application value in preparation of a medicine resisting staphylococcus aureus (ATCC29213), methicillin-resistant staphylococcus aureus (MRSA, XJ7502), USA300 (LAC) and vancomycin-resistant staphylococcus aureus (Mu20ATCC700699).