139 results about "Phenylmethanol" patented technology

The invention provides a catalyst used for preparing para-xylene and low-carbon olefin fluidized bed by selective methylation of toluene with methanol, which is obtained by the modification of zeolite molecular sieve by metal, nonmetal or / and rare earth metal, mixing, spraying, drying and forming of amorphous adhesive containing silicon or aluminium and the zeolite molecular sieve, and decoration of surface acidity and porous structure by siloxane-based compounds, wherein, the content of the alkaline earth metal is 0.1-8wt percent of the total weight of the catalyst, the content of the nonmetal is 0.1-8wt percent of the total weight of the catalyst, the content of the rare earth metal is 0.1-5wt percent of the total weight of the catalyst, and the loading of the Si decorated by the siloxane-based compound is 0.1-10wt percent of the total weight of the catalyst; the catalyst is used for the reaction of preparing para-xylene and low-carbon olefin fluidized bed by selective methylation of toluene with methanol; in the products, the selectivity of the para-xylene in the xylene isomers is more than 99 percent and the selectivity of the ethane and propylene in the composition C1-C5 is more than 90 percent.

The invention relates to a catalyst for producing dimethylbenzene by alkylation of benzene and methanol. The catalyst mainly overcomes the shortcomings of low utilization rate of methanol alkylation, low conversion rate of benzene and low selectivity of dimethylbenzene in the actual application of the catalyst reported in previous literatures. Through the adoption of the technical scheme of loading alkaline earth and rare-earth metal elements on a hydrogen-type MCM-22 molecular sieve, the problem is well solved. The catalyst provided by the invention is high in selectivity and can be used in the production process of dimethylbenzene by alkylation of benzene and methanol.

The core structure of 2-(1',2',3'-triazole-4'-benzyloxy)-1,3,4,6-O-acetyl-D-glucose with an anti-colorectal carcinoma activity is that a 1,2,4-triazole derivative substitutes 2-site of 1,3,4,6-O- acetyl-D-glucose. The above compound has a good activity of inhibiting colorectal carcinoma cells, and can be used as an anti-colorectal carcinoma medicine. A synthesis method of the above compound comprises the following steps: 2-amino-D-glucose hydrochloride and an azidation reagent are used as raw materials to generate a 2-azido-1,3,4,6-O-acetyl-D-glucose intermediate under an alkaline condition; 3-propargyl bromide and phenylcarbinol react under the action of sodium hydride to generate phenyl propargyl ether; and the 2-azido-1,3,4,6-O-acetyl-D-glucose intermediate and phenyl propargyl ether undergo a click reaction in a solvent under the catalysis of monovalent copper to generate 2-(1',2',3'-triazole-4'-benzyloxy)-1,3,4,6-O-acetyl-D-glucose.

The invention discloses a technique for using methylbenzene to prepare benzaldehyde and benzene methanol by air oxidation and equipment. In a reaction separating system consisting of a multistage oxidation reactor as well as a gas-liquid separator, a lateral line fractionating column or a fractionating column system, 0.1 to 50ppm of monometallic porphyrin or u-oxygen bimetallic porphyrin is separately used as a catalyst, or metallic porphyrin and phthalimide (or salt) are used as a mixed catalyst according to the weight ratio of 1:20 to 100; when the reaction temperature is 80 to 200 DEG C, the methylbenzene is maintained in a multistage oxidizer for 60 to 180 minutes and prepared into the benzaldehyde and benzene methanol by catalytic oxidation; and the gas-liquid separation and purification are carried out. Compared with the prior art, the technique and equipment can obviously improve the conversion rate of the methylbenzene, and the conversion rate of the methylbenzene can reach to be more than 95% by experiments; in addition, the technique and equipment also can improve the selection of the benzaldehyde and benzene methanol, and the selection of the benzaldehyde and benzene methanol can reach to be more than 50%.

The invention discloses an energy conservation and emission reduction process for producing p-xylene through alkylation of tolylcarbinol, and belongs to the field of petrochemical industry. The process is divided into a reaction part and a separation part. A plurality of ZSM-5 catalyst fixed bed reactors are adopted in the flow; the temperature rise of the reactors is controlled by direct chilling of methanol among the reactor sections, so that the conversion rate of toluene is increased; the temperature after heat exchange between materials at outlets of the reactors and raw materials in front of a heating furnace is increased through compression of a compressor; then heat exchange is performed many times to increase the heat recovery; and meanwhile, power is provided for flowing of the materials in the flow, and the amount of a low-grade refrigerant required for flash separation is reduced, so that heat work integration is realized; and finally, a p-xylene product is obtained through coupling operation of rectification and melt crystallization. Carrier gas required by the process and unreacted toluene are mostly recycled in the flow. The energy conservation and emission reduction process has the effects and benefits of being a new energy conservation and emission reduction process for producing the p-xylene and producing obvious economic and social benefits.

The invention discloses a preparation method of a Cu, Fe-doped vacancy Keggin type silicon tungsten polyoxometallate catalyst. According to the invention, Cu and / or Fe salt with the molar ratio of 0.1-0.4 are / is added into Na10[alpha-SiW9O34].18H2O, K8[gamma-SiW10O36].10H2O and K8[beta2-SiW11O39].14H2O polyoxometallate precursors, full mixing, dissolution and evaporation for dryness are sequentially performed, and finally, calcining is performed at the temperature of 300-400 DEG C, so that the catalyst can be obtained. The preparation method is simple, low in cost, moderate in reaction condition and high in recovery rate; the raw materials are easy to get; when the catalyst is used for preparing benzaldehyde through catalytic oxidation of phenylcarbinol and 30% H2O2 is used as the oxidizing agent, the conversion rate can reach 87.1-96.9%, and the productive rate can reach 85.3-96.1%.

The invention provides a method for preparing benzaldehyde through phenylcarbinol oxidation. According to the method, ionic liquid serves as a supporting electrolyte, acetonitrile serves as a cosolvent, a high-pressure reactor provided with electrodes is used for performing electrochemical electrolysis in a supercritical CO2 environment with a reaction temperature of 25-70 DEG C (system pressure is 10-25MPa), and the phenylcarbinol is converted to the benzaldehyde through selective oxidation. According to the method, features of the supercritical CO2 such as small viscosity, zero surface tension and friendly environment are utilized, advantages of the ionic liquid such as stable physicochemical properties and high electrical conductivity are combined, a constant potential electrolysis technology is adopted to control the efficient selective oxidation of the phenylcarbinol to the benzaldehyde effectively, and the yield and the selectivity of the benzaldehyde can reach above 99.8% under an optimum condition.

The invention discloses a ZSM-5 zeolite catalyst for alkylation of benzene and methanol, a preparation method and an application thereof. The catalyst is composed of any one of [gamma]-Al2O3 or [eta]-Al2O3 and hierarchically-porous HZSM-5 molecular sieve as a carrier supporting MgO. On the basis that the total weight of the carrier is 100%, the carrier includes 50-80% of the HZSM-5 molecular sieve and 20-50% of any one of the [gamma]-Al2O3 or [eta]-Al2O3. The supporting load of the MgO is 1-12%. The catalyst has high selectivity on methylbenzene and dimethylbenzene and high stability.

The invention provides a method for trapping and controlling Toxoptera aurantii Boyer, which comprises the steps of: with cis-3-hexen-1-ol, trans-2-hexenal, gaultherolin and phenylcarbinol as taste source matters, preparing into a Toxoptera aurantii Boyer botanical pheromone trapping agent according to the proportion of 1:(0.1-15): (0.1-15): (0.1-15), or preparing the gaultherolin, schizonol and nepetalactone into a Toxoptera aurantii Boyer pheromone trapping agent according to the proportion of 1: (0.1-15): (0.1-15), selecting color bud green, rape flower yellow and jasmine yellow to be prepared into a sticky colored plate, combining with a sticky colored plate trapper to prepare a trapper, and placing the trapper into a tea garden for trapping Toxoptera aurantii Boyer or sexuales to reduce overwintering fertilized ova so that the population density in next year is reduced. The method provided by the invention is free of pollution, adapts to the production of current organic tea and non-polluted tea, and has the advantages of high control efficiency, stable performance, reduction of use frequency and use dosage of chemical pesticides, convenience for transportation of raw materials and use, and low cost.

A composition for providing a film on keratin fibres, the composition comprising: a film-forming aminosilicone polymer; a silicone resin; an ether of a water-soluble polyhydric alcohol; a thickening system comprising a deposition enhancer and a thickening polymer; one or more coloured materials or one or more pigments; water; 2-phenoxyethanol and / or phenylmethanol; wherein the composition is substantially free of esters of parahydroxybenzoic acid; and wherein the composition is substantially free of isothiazolinone compounds. Also, associated methods, kits and uses.

The water adding synthetic diesel oil contains composite fuel in 40-60 wt% except diesel oil; and the composite fuel consists of water 10-30 wt%, benzene 10-30 wt%, methanol 10-20 wt%, turpentine 20-45 wt%, isopropanol 5-10 wt%, fatty acid 5-10 wt%, dispersant 8-15 wt%, catalyst 5-10 wt% and assistant 2-5 wt%. The synthetic diesel oil has simple preparation process, stable performance and no delamination in long term storage, may be mixed in any ratio with diesel oil, kerosene, solvent oil, etc. before use. The product has less change in color and transparency, and may be used widely in diesel car, diesel locomotive, ship engine, diesel oil engine for air conditioner, boiler, etc.

The invention discloses a preparation method of full benzyl-protected beta-alkylglucoside. The method is characterized by comprising the following steps of: mixing propineglucoside of full benzyl and a solvent in the ratio of 1mol:(10-100)L while stirring; adding an alcohol receptor while stirring; undergoing a glycosylation reaction in an FeCl3 / C solid acid catalyst at the temperature of 20-100 DEG C; after the reaction, filtering the catalyst out; and concentrating and purifying a filtrate to obtain a product, i.e., full benzyl-protected beta-alkylglucoside, wherein the receptor is an alcohol selected from phenylcarbinol, methanol, propenol, n-butyl alcohol and the like; and the equivalent proportion of the receptor to propyne alcoholic glycoside is (1.0-5.0):1. Compared with the prior art, the preparation method has the advantages of simple process, convenience for operating, low cost, high yield, avoidance of the use of high-toxicity chemical raw materials and environmental friendliness, and is a synthetic method of full benzyl-protected beta-alkylglucoside which has a wider substrate application range and is environmentally-friendly, economical and efficient.

The invention discloses a P, N and Si ternary hybrid flame retardant and a preparation method thereof, and mainly relates to the field of reactive flame retardants. The structural formula is shown inthe specification has the beneficial effects that 4, 4 '-dihydroxy benzophenone and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide are subjected to a reaction through molecular design so as to obtain 4, 4'-di (diphenoxyphosphate-6-oxy) benzophenone (DODH) to be used as raw materials; 4, 4 '-bis (diphenoxyphosphate-6-oxy) benzhydrol (DODOH) is obtained by using said raw material and using a reducing agent for reduction, and then the phosphorus-containing flame retardant and a silane coupling agent isocyanatopropyltriethoxysilane (IPTS) are mixed. Elements of phosphorus, nitrogen and silicon with flame retardant properties can be introduced into the material by adding the flame retardant into an organic polymer material, so that the material has an efficient synergistic flame retardanteffect.

The invention discloses a preparation method for synthesizing an indazolinone compound by carbon dioxide promotion and photocatalyst-free photo-induction. A quinoline 2-nitrobenzyl alcohol compound and an amine derivative serve as raw materials, low-priced and easily available common bulbs serve as reaction light sources, carbon dioxide serves as a promoter, common organic solvents serve as reaction solvents, reaction is performed at a certain temperature for a certain time, the indazolinone compound can be prepared in a high-yield and high-selectivity manner, and high yield is obtained in gram-scale amplification reaction.

The invention discloses a fast curing thermosetting conductive silver adhesive. The silver adhesive comprises a base resin, a curing agent, a curing accelerator and a conductive material. The silver adhesive is characterized in that: the base resin is epoxy resin, the curing agent is an aromatic polyamine curing agent, the curing accelerator is a phenylcarbinol-modified imidazole compound, and the conductive material is silver powder. The thermosetting conductive silver adhesive can effectively reduce the curing time.

The invention relates to a preparation method for an epoxy hardener resistant to boiling water boiling. The hardener consists of an epoxy compound, a hydroxyl compound, an amine compound and an imidazole compound, wherein the epoxy compound is butyl glycidyl ether, phenmethyl glycidyl ether or 1,4-butanediol diglycidyl ether; the hydroxyl compound is phenylcarbinol, polyethylene glycol or glycerol; the amine compound is a mixture of m-xylenediamine and 3,3-dimethyl-4,4-diamino-dicyclohexyl methane; and the imidazole compound is 2-ethyl-4-methylimidazole or 2-methylimidazole. The hardener is mainly applied to occasion bonding which is resistant to a boiling water medium for a long time, and has the advantages of simple preparation process, easiness for controlling reaction conditions, environmental friendliness and small reduction rate of strength after boiling water boiling after being hardened and bonded with epoxy resin at the room temperature.

The invention relates to a method for separating and measuring levocetirizine dihydrochloride and 5 related substances by using high performance liquid chromatography. According to the method, a chromatographic column is a C18 chromatographic column, detection is performed after the elution of a mobile phase containing a mixed solution of sodium heptanesulfonate and acetonitrile, and alkali is added to the mobile phase. By adopting the method, separation and detection can be simultaneously performed any one or more of 5 related substances in a levocetirizine dihydrochloride tablet, that is, levocetirizine dihydrochloride, levocetirizine lactose ester thereof, levocetirizine polyethylene glycol ester, p-chlorobenzophenone, p-chlorobenzyl alcohol and p-chlorodiphenylmethylpiperazine. Compared with the prior art, the degree of separation of the levoctirizine hydrochloride and the related substances is good, the sensitivity is high and the separation and detection efficiency is improved.

A catalyst for preparing benzaldehyde by gas-phase selective oxidizing of phenylmethanol has a formula Fe1-x(ó�)Fex(ó¾)(PO4)(2+x / 3), where x=0-1, andó

An antalgic medicine as Chinese medicine in the form of injection for treating cancerous pain is prepared from 3 Chinese medicinal materials including orientvine stem, greater celandine herb, etc. through respectively extracting general alkaloid and dried extract, mixing with water for injection, tween-80 and phenylmethanol, filtering and sterilizing to obtain the injection. Its advantages are high antalgic effect, durable acting time, and no toxic by-effect.

The invention relates to a preparation method of xylene by alkylation of mixed crude benzene and methanol. The method uses mixed crude benzene and methanol in the molar ratio of 1-6:1 as raw materials, and the mixed crude benzene comprises 30-94% of benzene, 5-60% of toluene b, 1-6% of xylene, 0-10% of non-aromatic hydrocarbons and 0-10% of C9 aromatic hydrocarbons. The raw materials are subjected to an alkylation reaction in the presence of an acidic zeolite catalyst in a fixed bed or fluidized bed reactor under the conditions of reaction temperature at 360-460 DEG C, reaction pressure of 0-5.0 MPa, carrier gas of H2, H2O steam or CO2, so as to prepare xylene. This method can utilize coking-source benzene with surplus capacity and cheap methanol to produce xylene with high industrial added value, greatly reduces the production cost of raw materials, reduces the energy consumption and material consumption, and significantly improves the economic and social benefits of xylene production by alkylation of benzene and methanol.

The invention relates to a catalyst for preparing p-xylene as well as a preparation method and application of the catalyst. The catalyst is a core-shell structure molecular sieve and comprises an inner core molecular sieve and a shell layer molecular sieve coating the surface of the inner core molecular sieve, wherein the inner core molecular sieve is a ZSM-5 molecular sieve, the shell layer molecular sieve is an S-1 molecular sieve, and hydrogenation metal is packaged in the inner core molecular sieve; the catalyst has high conversion rate and selectivity to the product p-xylene in the process of catalyzing the alkylation reaction of toluene and methanol, the carbon deposition rate of the catalyst in the catalytic process is obviously reduced, and the catalyst has high stability.

Improved mechanical processing lubricating oil comprises the following raw materials by weight: 6-9 parts of sodium sulfite, 4-7 parts of ricinoleic acid polyester, 3-5 parts of hydroxyl sodium sulfonate, 4-8 parts of polyethylene glycol monomethyl ether, 2-4 parts of ethanolamine, 7-9 parts of nitromethane, 3-6 parts of triethanolamine, 4-9 parts of Turkey red oil, 6-8 parts of low molecular polyethylene wax, 2-6 parts of benzene methanol, 3-8 parts of paraffin, 4-10 parts of tetramethylammonium hydroxide, 2-5 parts of methyl polytetrafluoroethylene, 1-4 parts of sodium hydroxide, 2-6 parts of epoxy ethane and 15-24 parts of base oil. The beneficial effects are that the mechanical processing lubricating oil can be used to well play the lubricating and cooling effect, reduces the friction, and has good high temperature tolerance.

The invention discloses an antifungal flutrimazole ointment preparation and a preparation method thereof, and belongs to the field of pharmaceutical preparation. The antifungal flutrimazole ointment preparation comprises following ingredients, by weight, 1 to 1.5 parts of cetostearyl alcohol, 2 to 2.7 parts of glycerin monostearate, 2 to 2.7 parts of phenylcarbinol, 0.8 to 1.5 parts of tween-20, 1 to 1.5 parts of liquid paraffin, 0.05 to 0.2 part of albolene, 0.1 to 0.5 part of flutrimazole, 1.5 to 2.0 parts of polyethylene glycol 400, and 19 to 20.5 parts of purified water. The invention also provides the preparation method of the antifungal flutrimazole ointment preparation. The preparation method comprises following steps: (1) material preparing, (2) mixing, (3) emulsification, (4) emulsifiable paste preparation, and (5) finished product preparation. A few accessory materials are used for preparing the antifungal flutrimazole ointment preparation; the preparation method is simple; and product quality of the antifungal flutrimazole ointment preparation is stable.

The invention provides a method for producing an octahydro dipyrroloquinoline compound by using a phenyl-2-pyrrolidinyl benzyl alcohol compound under the acid condition. The phenyl-2-pyrrolidinyl phenylmethanol compound is dewatered under the acid condition to produce carbon positive ions; hydrogen on the tetrahydropyrrole ortho carbon is migrated to the carbon positive ions in a hydrogen anion form; imine positive ions are produced in situ; one part of imine positive ions are converted into enamine through proton transfer; enamine molecules and molecules containing the imine positive ions take intermolecular [4+2] ring addition reaction to obtain the octahydro dipyrroloquinoline compound. The building of the octahydro dipyrroloquinoline compound through a hydrogen migration strategy is realized; metal catalysts are not needed; green and environment-friendly effects are realized; the cost is low.

The invention discloses a modified polyether amine curing agent and a preparation method thereof. The modified polyether amine curing agent is prepared from, by weight, 40-60 parts of a polyether amine curing agent, 20-30 parts of a phenol synergy additive, 5-20 parts of phenylcarbinol and 5-20 parts of 2,4,6-tris(dimethylaminomethyl)phenol. The prepared modified polyether amine curing agent is small in viscosity, long in gelation time and easy to prepare. An epoxy resin paint film prepared through the modified polyether amine curing agent is good in impact resistance, high in tensile adhesive strength, good in wear resistance and excellent in overall performance.

The invention relates to a separation method of a toluene, methanol, isopropanol and dimethyl carbonate mixture. An apparatus used for realizing the method comprises a first extraction rectifying tower, a second extraction rectifying tower, an alcohol separating tower and a toluene tower, and o-xylene, m-xylene and p-xylene are adopted to extract and rectify toluene, methanol, isopropanol and dimethyl carbonate. The purity of each of products comprising toluene, methanol, isopropanol and dimethyl carbonate is high, and the separation cost is low.

The invention discloses a penetrating addition agent which comprises the following compositions in weight portion: 0.00018 to 0.0006 portion of laurocapam, 0.5 to 25 portions of myristyl lycine, 0.1 to 12 portions of dipropylene glycol methyl ether, 0.01 to 5 portions of N- methyl pyrrolidone, 0.05 to 2.5 portions of tri n butyl phosphate, 5 to 60 portions of diethylene glycol or butyl ether, 1 to 20 portions of phenylcarbinol and 1 to 3 portions of lignin sulfonic acid ammonium salt. The invention also discloses an application of the penetrating addition agent to the dyeing process and to the retting hemp process. The penetrating addition agent in the dyeing process ensures that the color yield and homochromatic properties of the double-component fiber are good, the leveling property is good and the 'white core' phenomenon is avoided.

The invention discloses a reverse osmosis flame-retardant waterproof layer. The reverse osmosis flame-retardant waterproof layer comprises 2-5 parts of tetrahydrofuran, 11-16 parts of diiodomethane, 20-30 parts of PVC resin, 10-13 parts of stabilizer, 9-13 parts of propylene carbonate, 3-9 parts of phenylcarbinol, 9-12 parts of dibutyl phthalate, 5-7 parts of dimethylethanolamine, 3-5 parts of anti-foaming agent, 2-7 parts of tetrahydrofuran, 8-12 parts of propenol, 13-18 parts of nitroethane, 9-13 parts of glycol, 15-18 parts of crosslinking agent, 3-7 parts of sodium tetraborate, 4-9 parts of mixed phosphate, 13-18 parts of plasticizer, 11-13 parts of auxiliary material, 22-28 parts of expansive fire-retardant system, 28-33 parts of ATO powder, 11-15 parts of E-20 epoxy resin, 22-25 parts of alcohol-soluble acrylate resin, 18-22 parts of fire retardant, 5-7 parts of thickening agent, 15-18 parts of coalescing agent, 1-3 parts of tetrahydrofuran, 11-13 parts of sodium silicate, 3-7 parts of 2-butoxyethanol, 22-25 parts of wood fiber powder, 28-31 parts of carbon fiber powder, 9-15 parts of coalescing agent, 12-16 parts of barium sulfate, 3-7 parts of lime powder and 11-13 parts of auxiliary material.

The invention provides an environment-friendly aqueous paint remover. The environment-friendly aqueous paint remover is characterized by being prepared from, by weight, 15-20% of phenylcarbinol, 20-28% of paratoluenesulfonic acid sodium salt, 6.0-8.0% of potassium hydroxide, 3.0-4.0% of sodium gluconate, 2-5% of a cosolvent and 30-40% of tap water. The environment-friendly aqueous paint remover has the advantages of being environmentally friendly, free of toxicity, free of damage to base materials, capable of being repeatedly applied and low in integrated cost.

The present invention relates to the preparation process of diphenyl ofloxacin and its application in preparing medicine for treating cardiac and cerebral vascular diseases. The preparation process includes the following steps: A) preparing gamma-chloro-4-fluorobenzene-1-butanone through the reaction between gamma-butyrolactone and sulfoxide chloride to obtain gamma-butyryl chloride and the subsequent reaction in mixed solvent with catalyst; B) preparing benzhydryl piperazine through the reaction between diphenylcaabinol and concentrated hydrochloric acid to obtain diphenyl chloromethane, the subsequent reaction in mixed solvent with catalyst and filtering; and C) preparing the product diphenyl ofloxacin with proper amount of benzhydryl piperazine, gamma-chloro-4-fluorobenzene-1-butanone, solvent methyl isobutyl ketone and catalyst potassium iodide and potassium carbonate, and through mixing and reaction.