35 results about "Benzene" patented technology

The invention discloses a method for preparing a 2-iodine amyl -2-ene-1,4-diketone derivative by adopting visible light catalysis. The method comprises the steps of adding allene, perfluorobutyl iodide, an additive and a photocatalyst as shown in a formula (I) to an organic solvent at the molar ratio of 1:(1-2):(1-2):(0.005-0.1), stirring under the conditions of an oxygen atmosphere, visible light illumination, room temperature and ordinary pressure for 10-20h, carrying out post-treatment on a reaction liquid to obtain a 2-iodine amyl -2-ene-1,4-diketone derivative as shown in a formula (II), wherein the additive is NaI, NH4I or KI; the organic solvent is ethanol, dichloromethane, benzene, methylbenzene, tetrahydrofuran or acetonitrile; the photocatalyst is selected from one of the following components: Ir(ppy)3, Eosin Y, Rose Bengal, [Ir(dF-CF3-ppy)2(dtbbpy)]PF6, [Ir(ppy)2(tbbpy)]PF6, Ru(bpy)3(BF4)2. The method is mild in reaction condition, simple in operation, high in selectivity and good in yield; a substituent group can be expanded; and visible light catalysis is adopted, so that the method has the characteristics of being free of pollution and environment-friendly. The formulas are as shown in the specification.

The invention discloses a method for removing phenol in phenol contained wastewater by using a hollow fiber membrane. The method comprises the following steps of: mixing a carrier and a diluent to prepare an extractant, wherein the adopted extractant carrier is tributyl phosphate, and the adopted diluent is coal oil or benzene; stirring and fully mixing the extractant and a stripping agent to prepare treating fluid; removing the phenol out of the phenol contained wastewater by using a hollow fiber membrane device; and after pretreating the hollow fiber membrane device, injecting the treating fluid into a tube pass of a membrane component, and injecting the phenol contained wastewater into a shell pass of the hollow fiber membrane component, wherein the wastewater can be treated through the same membrane component or a plurality of serial membrane components in a circular manner for many times; after the wastewater is subjected to two-stage treatment, the phenol concentration is less than 100mg/L; and after the wastewater is subjected to five-stage treatment, the phenol concentration is less than 5mg/L, the removal rate reaches up to 99.8 percent, and the wastewater reaches the national emission standard.

The invention relates to 1,4-di(2,4-diamino phenoxy) benzenoid form high-temperature epoxy adhesive and a preparation method thereof. The adhesive consists of a component A and a component B in a mass ratio of 1:1-2, wherein the component A is a co-polymer formed by the reaction between 1,4-di(2,4-diamino phenoxy) benzene and epoxy resin; and the component B is a homogeneous transparent solution which has the solid content being 15-30 percent and is formed by the reaction between 1,4-di(2,4-diamino phenoxy) benzene and binary acid anhydride in strong polar aprotic organic solvent and toluene. The preparation method comprises the following steps of stirring and uniformly mixing the component A and the component B at room temperature in a mass ratio of 1:1-2. The preparation process is simple, and the adhesive is excellent in comprehensive performance, so that the adhesive can be widely applied to adhesion among steel, copper, aluminum and other metals, as well as ceramic, glass, resin-based composite materials and other base materials, and has an excellent industrial prospect.

The present invention relates to a novel nickel catalyst. The present invention also relates to a process for the preparation of an improved nickel catalyst. The present invention also relates to a process for hydrogenation of m-dinitro benzene to m-phenylene diamine using the said improved catalyst. More particularly the present invention relates to a process involving hydrogenation of m-dinitrobenzene to m phenylene diamine in the presence of a supported bimetallic platinum catalyst, using methanol as a solvent. The catalyst system consisting of one metal selected from platinum group and other nickel supported on either carbon or alumina or silica or zeolite. The catalyst of the present invention is a bimetallic catalyst prepared by precipitation and impregnation technique at very specific preparation conditions.

The invention relates to preparation and application of nanometer multifunctional shell powder coating, and belongs to the field of building coating. The nanometer multifunctional shell powder coatingcomprises, by weight, 100 parts of modified shell powder, 15-25 parts of re-dispersible adhesive powder, 30-40 parts of raw shell powder, 1-5 parts of tourmaline powder, 1-2 parts of pigment and 0.1-0.5 part of defoaming agents. The preparation and the application have the advantages that the nanometer multifunctional shell powder coating has functions of adsorbing and decomposing TVOC (total volatile organic compounds) such as formaldehyde, ammonia gas and benzene, the indoor humidity further can be regulated under 'respiration' effects, accordingly, growth of bacteria can be inhibited, moldcan be prevented in a long-acting manner, and the nanometer multifunctional shell powder coating is beautiful in color, can be widely applied to indoor walls of classrooms, home, offices and the like, is environmentally friendly, is free of pollution, low in production cost and convenient to transport and store and has huge application potential.

Belonging to the technical field of catalysts for oxidation of benzene to maleic anhydride, the invention in particular relates to a catalyst for oxidation of benzene to maleic anhydride, a preparation method and application thereof. The catalyst for oxidation of benzene to maleic anhydride provided by the invention still has high conversion rate and maleic anhydride mass yield under the conditionof a low molten salt temperature. The catalyst with high activity and low molten salt service temperature provided by the invention can save a large amount of electrical power energy, and has a positive promoting effect on the maintenance and service life of the reaction device. Moreover, due to the high activity of the catalyst, the way of diluting the catalyst bed layer with a carrier can alsobe employed to reduce the catalyst consumption, thus further reducing the cost of enterprises.

The invention discloses a pyridine.benzene thiamethoxam acyl fertilizer, which is prepared from pyrazosulfuron with herbicidal activity, mefenacet pesticide and a nitrogen fertilizer carrier by combination, wherein the weight ratio of the pyrazosulfuron to the mefenacet is 1-(20-30); and the nitrogen fertilizer carrier is composed of urea, ammonium chloride and packing. The production method of the fertilizer is also disclosed by the invention; water is taken as a solvent; fertilizer granules are prepared by a spray coating method; and the production method is short in technological process, small in environmental pollution, stable in quality, and good in application prospect; the obtained fertilizer granules are suitable for fertilizing and weeding of a paddy field, and the targets of saving work, time and labor can be achieved.

The invention discloses a bifunctional adsorbent of N-TiO2 silkworm-excrement porous carbon and a preparation method of the bifunctional adsorbent of the N-TiO2 silkworm-excrement porous carbon. The preparation method comprises the following steps: (1) firstly mixing and putting silkworm excrement and ZnCl2 in a high-temperature tube furnace, introducing a protective gas to purge, then heating to 300 to 700 DEG C to obtain silkworm-excrement porous carbon (SPC) through reaction; (2) adding butyl titanate to a selective alcohol solvent, drop by drop adding to an aqueous suspension containing the silkworm-excrement porous carbon, enabling the butyl titanate hydrolyzed to generate amorphous TiO2, thus obtaining an A-TiO2/silkworm-excrement porous carbon material; (3) carrying out surface modification on the material through a plasma radiation way to obtain an N doped A-TiO2 silkworm-excrement porous carbon material; (4) calcining the material at the temperature of 180 to 500 DEG C, finally obtaining an N-TiO2/SPC bifunctional adsorption material. The bifunctional adsorption material disclosed by the invention is applied to synchronous adsorption and catalytic degradation of VOCs of aldehydes and benzene series.

The invention relates to a method for preparing benzene sulfonamide compounds. In the method, a ternary catalyzing system of ethyltriphenylphosphonium bromide-silver compounds-porphyrin is adopted; the method for preparing N-tert-Butylbenzenesulfenamide from the reaction of methyl tertiary butyl ether with a weak reactivity and benzene sulfonamide compounds is realized; remarkably technical effects of preferable reaction temperature, high yield and good universality are achieved; moreover, as appropriate additives are added in the reaction, the collision between molecules is promoted and the reaction time is shortened; the method has favorable industrialization perspective and industrialized production value.

A sulfonated multi-polymer synthesized by 1,3-di(3-sodium sulfonic-4-fluorobenformy)benzenesulfonate monomer and its method are disclosed. The process is carried out by heating 3,3,-di(4-fluorobenformy)benzene and nitrosonitric acid to 100-120degree, reacting for 4-8hrs in proportion of 1:2-1:4mol, cooling, pouring it into cold water bath, neutralizing by sodium hydrate, adding into sodium chloride to salt out, pump filtering, drying, re-crystallizing by mixed solution of methanol and water to obtain purified 1,3-di(3-sodium sulfonic-4-fluorobenformy)benzene, nucleophilic condensation reacting, adjusting proportion of sulfonated monomer and non-sulfonated monomer and copolymerizing with bisphenol to obtain various polyether ketone ketone. It has excellent filming performance and can be used for fuel cell.

The invention discloses wear-resistant and high-temperature resistant capacitor aluminum case film coating paint and a preparation method thereof. The wear-resistant and high-temperature resistant capacitor aluminum case film coating paint is mainly obtained through mixing and stirring compounds A and compounds B in raw materials according to certain weight parts, wherein the compounds A consist of polyurethane polyatomic alcohol, ethyl ketone, paraffin, isopropanol, polymethyl-benzene gadoleic acid methyl ester and attapulgite, and the compounds B consist of phenolic resin, dimethyl silicone polymer, acrylic ester copolymer modifying agents, straw ashes, silane coupling agents, 6-tertiary butyl-3-methylphenol, stearic acid and tetramethylsilane. The wear-resistant and high-temperature resistant capacitor aluminum case film coating paint has the advantages that the recipe is reasonable, the preparation method is simple, the curing effect on a capacitor aluminum case is good, a capacitor is effectively protected, the prepared film coating paint has the heat resistance performance and the wear resistance performance, and the service life of the capacitor is prolonged.

The invention relates to a high-strength marine rubber fender. Rubber raw materials consist of the following components in parts by weight: 70-90 parts of natural rubber 1#, 30-50 parts of chloroprene rubber 21, 2-3 parts of stearic acid, 1-2 parts of paraffin, 15-25 parts of hard carbon black, 2-3 parts of anti-aging agent DTPD, 2-4 parts of vulcanizing agent TRA, 20-30 parts of calcium carbonate, 3-5 parts of zinc oxide, 4-5 parts of magnesium oxide, 2-5 parts of Vaseline, 0.3-0.5 part of accelerant DM, 1.1-1.3 parts of accelerant TT, 0.9-1.1 parts of anti-aging agent 4010 and 0.9-1 part of anti-aging agent D, wherein the anti-aging agent DTPD is domestically called an anti-aging agent 3100 which has the Chinese name of N,N'-xylyl-p-phenylenediamine mixture, the vulcanizing agent TRA is also called DPTT which has the Chinese name of tetra-sulfide bis(pentamethylene) thiuram and the molecular formula of C12H20N2S4, the accelerant DM has the Chinese name of 2,2'-dithio-dibenzothiazole and the molecular formula of C14H8N2S4, the accelerant TT has the Chinese name of disulfide tetramethyl thiuram and the molecular formula of C6H12N2S4, the anti-aging agent 4010 has the Chinese name of N-isopropylbenzene-N-phenylene-p-phenylenediamine, and the anti-aging agent D has the Chinese name of N-phenyl-2-naphthylamine and the molecular formula of C16H13N. According to the high-strength marine rubber fender, the tensile breaking strength of the rubber fender is improved through changing the proportions of a rubber material, a polar material and polysulfur bonds.

The invention discloses a preparation method of a non-woven fabric, and belongs to the field of spinning. Sodium pyrophosphate, glucose, sodium hydroxide, ferrous sulfate and water are sampled, nitrogen protection is adopted, heating and stirring are performed, and then cumyl hydroperoxide and polybutadiene are added and stirred and mixed; a stirring mixture, allyl benzene, methyl methacrylate, epoxypropyl methacrylate and dibenzyl phthalate are obtained to be added into magnesium sulfate, stirring, mixing and drying are performed, a drying object is obtained to be added into polylactic acid to be mixed, and a mixed matrix is obtained; folium eriohotryae and aloe are obtained to be mixed and homogenized, deionized water is added for digestion and suction filtration, a filtrate is obtainedfor centrifuging, a supernate is obtained to be added into a copper nitrate solution to be mixed, and an antibiotic finish solution is obtained; processed linen fiber, a dispersing solution and the antibiotic finish solution are obtained to be soaked and filtered, the linen fiber is taken to be cleaned with deionized water, and linen fiber is obtained; linen fiber, the mixed matrix, polypropyleneand sodium alginate are obtained to be mixed for opening, carding and lapping, the mixture is placed into a needle machine for needling treatment, and hot rolling is performed to obtain the non-wovenfabric.

The invention discloses a production method of 2,2'-dimethyl[1,1'-biphenyl]-4,4'-diamine. According to the production method of the 2,2'-dimethyl[1,1'-biphenyl]-4,4'-diamine, with 3-nitrotoluene as aninitial raw material, reduction is conducted at first to obtain 3,3'-dimethylhydrazo-benzene, and then rearrangement is conducted to obtain the 2,2'-dimethyl[1,1'-biphenyl]-4,4'-diamine; reduction isconducted with Pd/C as a main catalyst and an anthraquinone compound plus sodium di(2-ethyl-hexyl)sulfosuccinate as cocatalysts; and the anthraquinone compound is one or two of 1,4-dihydroxyanthraquinone, 2-hydroxyanthraquinone and 2,6-dihydroxyanthraquinone. According to the production method of the 2,2'-dimethyl[1,1'-biphenyl]-4,4'-diamine, through a large number of experiments, it is found that by combining the sodium di(2-ethyl-hexyl)sulfosuccinate and the anthraquinone compound as the cocatalysts, the reaction selectivity of production of the 3,3'-dimethylhydrazo-benzene through reduction of the 3-nitrotoluene can be greatly improved, and the reaction yield which is 70% or above can be obtained finally, so that conditions are created for mass application of the 2,2'-dimethyl[1,1'-biphenyl]-4,4'-diamine on the aspect of production of special materials.

The invention belongs to the technical field of organic chemistry, in particular relating to a purification method of vitamins, comprising the following steps: resolving the crude vitamin K3 in an organic solvent, such as benzene, ethanol and carbon tetrachloride and the like at the temperature of 70-90 DEG C by adopting a recrystallization technical process; adding activated carbon, stirring and resolving for 3-5 hours, filtering, concentrating the filter, and evaporating excessive organic solvent; stirring the residual mixed liquor at the condition of 0-5 DEG C; and separating out the crystallization; placing the solid-liquid mixture in a centrifugal machine for centrifugation to reach separation of the solid and the liquid; and drying the solid to obtain more than 96% of the pure product vitamin K3. The organic solvent is concentrated and recovered to be recycled. The purification method of the invention has the advantages of high purity, low cost and basic nonexistence of three wastes and the like, and is beneficial for industrial implementation.

The invention discloses a cyclohexene Ru@Y2O3 catalyst prepared by selective hydrogenation of benzene. The catalyst is composed of an active component Ru and an auxiliary agent Y2O3, and the structureof the catalyst is formed by covering a Ru nanoparticle with the auxiliary agent Y2O3; the active component Ru and the auxiliary agent Y2O3 are both calculated by the number of atoms of metal elements; the atomic number of Ru is 1, and the atomic number ratio of each component in the catalyst is 1, and Y is 0.10 to 1.50. The invention provides a novel preparation technology of the cyclohexene catalyst prepared by selective hydrogenation of benzene; the cyclohexene Ru@Y2O3 catalyst prepared by selective hydrogenation of benzene can be prepared by using the technology. The catalyst is high in activity and high in cyclohexene selectivity in the absence of ZnSO4. The catalyst disclosed by the invention has higher Ru@Y2O3 catalyst activity and cyclohexene selectivity than a conventional industrial catalyst, and the catalyst can be reused with good stability.

The invention relates to a special palm wax for car paint environmental protection. The special palm wax for the car paint environmental protection is prepared by combining the following raw materialsthrough a reasonable matching: palm wax, modified silicone oil, oleic acid, coconut oleic acid alkanolamide, ethylene glycol, glycerin, sodium dodecylbenzenesulfonate, salicylic acid benzene ester, chlorinated paraffin, paraffin oil, and fillers. The special palm wax for the car paint environmental protection is used for improving brightness, water-sweeping performance and feel-slip of vehicle paint surfaces, resulting in not touching ash, resisting sand scratching, sun and acid rain harming, not oxidizing corrosion paint, to achieve perfect car paint conservation. In addition, the special palm wax for the car paint environmental protection is prepared from the palm wax as an active ingredient, supplemented with modified silicone oil and other various components, and manufactured with a gradient cooling technology, and the product has good fusion rate and good yield.

A carbapenem compound represented by a following formula [1],

wherein R¹ is C₁ to C₃ alkyl or C₁ to C₃ alkyl substituted by hydroxy. R is hydrogen atom or a group which regenerates a carboxyl group by hydrolysis in a living body,

A is a following formula [1a],

wherein E is a 5 to 7 membered cyclic ring optionally containing 1 to 3 hetero atoms (excluding benzene ring) which forms a bicyclic ring in corporation with the benzene ring,

Y is hydrogen atom, C₁ to C₄ alkyl, C₁ to C₄ alkoxy, trifluoromethoxy, halogen atom or cyano group, or its pharmaceutically acceptable salt.

The invention discloses a chlorobenzene directional dual-catalytic chlorination method, and relates to the technical field of organic chemical engineering. The product is prepared from the following raw materials in parts by weight: 30-50 parts of anhydrous benzene, 5-20 parts of chlorine and 1-5 parts of a catalyst, the production method is mature and reliable in process, reduces the emission oftoxic gas, is green, environment-friendly and pollution-free, and is more economical and practical due to the recycling of useful gas while meeting the green, environment-friendly and pollution-free requirements.

The invention relates to a method for producing a gasoline blending component from dry gas. The method comprises that dry gas contacts benzene on a catalyst, wherein the catalyst is a binder-free ZSM-5 molecular sieve with a silicon aluminum mole ratio SiO2/Al2O3 of 30-900 and a crystal grain diameter of 10-800 nm, and is treated with water vapor. According to the present invention, the method can be used to produce the high-octane value clean gasoline blending component through the reaction of the refinery dry gas and the benzene.

The invention discloses a novel preparation method of 2,4-dihydroxy benzene acyl chloride as follows as shown in the specification and belongs to the technical field of pharmaceutical technologies. The invention aims at relating to the more advanced novel preparation method of 2,4-dihydroxy benzene formyl chloride. The invention aims at providing the novel preparation method of the compound.

This invention relates to a method of treating certain disorders by administering a compound of the formula 1

or a pharmaceutically acceptable salt thereof, wherein:

• • R¹ is hydrogen, straight or branched alkyl of from 1 to 6 carbon atoms or phenyl; and
  • R² is straight or branched alkyl of from 4 to 8 carbon atoms, straight or branched alkenyl of from 2 to 8 carbon atoms, cycloalkyl of from 3 to 7 carbon atoms, alkoxy of from 1 to 6 carbon atoms, -alkylcycloalkyl, -alkylalkoxy, -alkyl OH, -alkylphenyl, -alkylphenoxy, or -substituted phenyl. The invention also relates to a method of treating the above disorders by administering the compound (3S,5R)-3-aminomethyl-5-methyl-octanoic acid.