84 results about "Ethyl-phenol" patented technology

The invention relates to a resin-based activated carbon ball and a preparation method thereof, belonging to the technical field of high polymer materials. The resin-based activated carbon ball is prepared from the following materials according to parts by weight: 10-15 parts of m-ethyl phenol, 20-55 parts of formaldehyde, 5-9 parts of triethylamine, 80-120 parts of deionized water, 3-8 parts of polyvinyl alcohol, 10-20 parts of melamine and 10-25 parts of inorganic salt. According to the invention, spherical phenolic resin is synthesized first so as to be used as basic resin for preparing resin-based activated carbon, and then, the resin-based activated carbon is prepared at high temperature under protection of nitrogen. Compared with powdery and granular activated carbon, the spherical activated carbon becomes an adsorptive desulfurizing agent with excellent performance depending on the characteristics of smooth surface, suitable ball diameter and good mobility.

The invention discloses a method for preparing 4-ethyl phenol by selective lignin hydrogenolysis. According to the method, lignin, nickel-based catalysts and reaction solvents are added into a reactor, the reactor is sealed and filled with hydrogen, the internal pressure of the reactor is controlled to be 0-4MPa, and reaction is performed for 1-5 hours at the temperature of 210-290 DEG C. After reaction, reaction liquid is filtered to obtain a liquid product containing the 4-ethyl phenol and recovered catalysts. The nickel-based catalysts comprise carriers and nickel metal loaded on the carriers. Generation of the 4-ethyl phenol in the hydrogenolysis process of lignin can be greatly promoted by the catalysts, formation of carbon deposits and other phenol products in the lignin depolymerization process is inhibited, and the generated 4-ethyl phenol is high in selectivity. The yield of the 4-ethyl phenol reaches 6.31%, the content of the 4-ethyl phenol in the organic liquid product is 38.83%, and the yield and selectivity simultaneously reach the current highest level.

The invention discloses a method for directly separating phenols from coal pyrolytic oil. Amide compounds are taken as extracting agents and form eutectic solvent solvents or solid complexes insoluble in the oil phases with phenols in oil, and therefore, the phenols are separated from the oil phases. Ether compounds are adopted to recycle the extracting agents by virtue of reverse extraction; the recycled extracting agents can be continuously applied to the extraction process. The phenols can be one or more of phenol, o-cresol, p-cresol, m-cresol, ethyl phenol, naphthol, butyl phenol, propyl phenol, dihydroxyl phenol and polyhydroxyl phenol; the oil includes model oil and pyrolytic oil; the concentration range of the phenols is 10-400g/L; the molar ratio of the amide compounds to the phenols is within the range of 0.1-2.0; the separation temperature ranges from 0 to 100 DEG C and the separation time ranges from 1 to 100 minutes. The removal rate of the phenols under appropriate reaction conditions is above 90%.

The invention discloses a chiral intermediate of rivastigmine, and a preparation method thereof. The preparation method comprises the steps of preparing 3-[1-(methyllamino)ethyl]phenol through reacting a raw material of 3-hydroxyacetophenone with an methylamine water solution to form an imine and reducing the imine; carrying out resolution by using a chiral reagent to obtain a novel intermediate of (s)-3-[1-(methyllamino)ethyl]phenol of rivastigmine; and further loading methyl on basis of the intermediate to obtain an important intermediate of (S)-3-[1-(dimethyllamino)ethyl]phenol. Compared with a conventional synthetic method of (s)-rivastigmine, the preparation method provided by the invention has high resolution rate, low cost and small load for treatment of three wastes, has little pollution to an environment, and is beneficial to large-scale production.

The invention discloses essence of pickled Chinese cabbage and a preparation method and an application thereof. The method comprises the following steps: first, adding 60wt% of edible vegetable oil or glycerol triacetate as a solvent, heating to 60 DEG C, adding 4-hydroxyl-2, 5-dimethyl-3(2H) furanone, acetyl pyrazine, stirring till the components are completely dissolved, and cooling to below 30 DEG C; then, sequentially adding ethyl acetate, ethyl hexanoate, ethyl lactate, butyl caproate, 2-methyl butyric acid hexylester, phenethyl acetate, trans-2-heptenal, phenethyl alcohol, p-ethyl phenol, dimethyl disulfide, acetic acid, propionic acid, butyric acid, 2-methyl butyric acid, garlic oil or galic essential oil, fennel oil or fennel oil resin, ginger oil or ginger essential oil or distilled ginger oil and a pepper extract or pepper essential oil or pepper oil resin; and adding 40wt% of residual edible vegetable oil or glycerol triacetate, uniformly stirring and filling to obtain the essence. The essence of of pickled Chinese cabbage produced by the invention is vivid in frangrance compared with that of common fermented flavor essence, stable in quality, good in temperature resistance and unique in flavor.

The invention discloses an analysis and evaluation method of bad stable flavor substances in red wine, and the method is as follows: using a gas chromatography electronic nose for analysis and detection of the red wine to obtain mass concentration of 4-ethyl phenol and 4-ethylguaiacol in the red wine; using a dynamic flavor dilution olfactometry measurement system for detection of the red wine to obtain recognition threshold of the 4-ethyl phenol and the 4-ethylguaiacol in the red wine; and finally, according to the mass concentration and the recognition threshold of the 4-ethyl phenol and the 4-ethylguaiacol in the red wine, calculating the flavor intensity of the two materials of the 4-ethyl phenol and the 4-ethylguaiacol in the red wine. When the flavor intensity is greater than 1, the wine aroma can be influenced, the analysis and evaluation has a good linear relationship in a common concentration range of bad stable flavor substances of the 4-ethyl phenol and the 4-ethylguaiacol in the red wine, and has the advantages of being fast, regular and accurate.

The invention relates to the biomass comprehensive utilization technique field, in particular relates to a method for preparing a phenolic compound by a biomass. Water is added to a biomass vegetable material undergoing smashing and filtration which is added to a closed reaction kettle or a reactor after being mixed evenly, the reaction kettle or the reactor is heated at a heat rise rate of between 5 and 50 DEG C/min and a reaction temperature of between 300 and 500 DEG C, the mixture is maintained under the reaction temperature for fifteen to sixty minutes, the dregs are distilled after the substance under reaction is cooled down, the product is separated through the condensation, an oil phase product is separated and extracted by acetone so as to obtain the phenolic compound. The method of preparation has a simple technical process and converts the biomass into the phenolic compound (chiefly phenol, methylphenol, xylenol, ethyl phenol and methyl ethyl phenol) directly through controlling the reaction conditions.

The invention discloses starch size which comprises the following components in part by weight: 30 to 40 parts of native starch, 2 to 5 parts of potassium persulfate, 10 to 15 parts of butyl methacrylate, 10 to 15 parts of acrylamide, 2 to 5 parts of emulsified oil, 3 to 6 parts of talcum powder, 1 to 5 parts of trisodium phosphate, 10 to 15 part of carboxymethylcellulose, 4 to 12 parts of sodium pentachlorophenate, 2 to 7 parts of formaldehyde ethyl phenol and 5 to 10 parts of polyamine polyamide epoxypropane. According to the starch size, the mechanical property of the starch size is improved obviously, the raw materials and the energy are saved, and the production cost is greatly reduced.

The invention provides a nematicide composition containing fosthiazate and furfural. The nematicide composition comprises active ingredients including fosthiazate and furfural, wherein the weight percent ratio of the fosthiazate to the furfural is 1:18-300, the total content of the active ingredients is 80 to 98 weight percent, and the rest is auxiliary materials. The auxiliary materials consist of calcium dodecyl benzene sulfonate, triphenyl ethyl phenol polypropylene ether, dodecylphenol polyvinyl ether, antifreezing agents and water. The nematicide composition has the advantages that the advantages of each medicament can be realized, the cost is reduced, the time and the labor are also saved, and the economic benefit is improved. The action mechanisms of the fosthiazate and the furfural are similar, the additive effect is shown after the two ingredients are combined, and the data in the table obviously shows the advantages of the fosthiazate and furfural composition in the sterilization effect.

The invention discloses a method for preparing monophenol chemicals by catalyzing lignin depolymerization through metal organic framework material derivative loaded ruthenium. According to the method, lignin is taken as a raw material, organic micromolecular alcohol is taken as a reaction medium, and selective conversion of lignin is realized by regulating and controlling the loading amount of catalyst metal ruthenium and conditions of a catalytic system, and meanwhile, formation of a byproduct coke is inhibited. Under the conditions that the ruthenium loading capacity is 0.5 wt.%-5 wt.%, the H2 pressure is 1-5 MPa, the reaction time is 230-290 DEG C and the reaction time is 2-12 h, the lignin conversion rate can reach 80.20% to the maximum, the monophenol product yield can reach 14.45 wt.%, the coke rate is only 0.8 wt.% to the minimum, the 4-ethyl phenol yield reaches 5.56 wt.% to the maximum, and the selectivity can reach 41.72% to the maximum. After the catalyst is repeatedly used for 10 times, the activity is not obviously reduced.

The invention discloses tristyrylphenol polyoxyethylene ether sulfonate. A preparation method of the tristyrylphenol polyoxyethylene ether sulfonate comprises the following steps: (1) adding potassiumhydroxide into triphenylethyl phenol, and carrying out a high-temperature continuous aging reaction to obtain a reactant; (2) adding epoxypropane into the reactant for continuous aging reaction to obtain a secondary reactant; (3) adding ethylene oxide into the secondary reactant for continuous aging reaction to obtain a product; and (4) adding sulfamic acid into the product, adding a catalyst urea or dodecylbenzene sulfonic acid, and adding a sodium sulfite saturated solution after reaction so as to obtain the tristyrylphenol polyoxyethylene ether sulfonate. The invention also discloses an application of the tristyrylphenol polyoxyethylene ether sulfonate. A pesticide suspension concentrate comprises the following raw materials: 48% of clothianidin, 5% of the tristyrylphenol polyoxyethylene ether sulfonate, 1% of fatty alcohol-polyoxyethylene ether, 0.5% of magnesium aluminum silicate, 0.02% of xanthan gum, 0.1% of sodium benzoate and 45.38% of water.

An energy-saving environment-friendly modified starch size is made from, by weight, 8 to 14 parts of butyl methacrylate, 6 to 10 parts of sodium pentachlorophenol, 3 to 5 parts of formaldehyde ethyl phenol, 10 to 16 parts of polyvinyl alcohol, 0.5 to 0.7 part of 2-naphthol, 6 to 12 parts of phosphate starch, 2 to 5 parts of nano-silicon nitride, 4 to 7 parts of polyoxyethylene lauryl ether, 20 to 32 parts of native starch, 5 to 8 parts of cerium ammonium nitrate, 2 to 4 parts of potassium persulfate, 2 to 3.2 parts of acrylic acid, 3 to 7 parts of guar gum modified hydroxymethyl, 3 to 7 parts of guar endosperm, 6 to 9 parts of modified starch, and 4 to 6 parts of corn starch. The energy-saving environment-friendly modified starch size is higher in permeability and wear resistance and helps improve loom efficiency, reduce pollution and energy consumption and save energy.

The invention discloses a ferrovanadium slag-high aluminium blast furnace slag EPC (expendable pattern casting) coating and a preparation method thereof. According to the preparation method, ferrovanadium slag, high aluminium blast furnace slag, pyrite tailings, quartz tailings, kieselguhr, silicon carbide, monticellite, cordierite, graphite powder, talcum powder, aluminium borate, gamma-methacryloxy propyl trimethoxyl silane, mono-alkoxy tri (dioctylphosphate) titanate, trihydroxy methyl melamine formaldehyde resin, dicumyl peroxide, triphenyl ethyl phenol polyoxyethylene ether, polyvinyl acetate emulsion, boron carbide fiber, water glass, sodium borate, n-octyl alcohol, ethyl alcohol and water are adopted as the raw materials to prepare the EPC coating with an excellent use property and low production cost, and the purposes of comprehensively recycling ferrovanadium slag and high aluminium blast furnace slag and reducing the production cost are achieved.

The invention discloses an analytical method of defective flavor substance 4-ethylphenol in red wine, which utilizes a headspace solid-phase microextraction and gas chromatography/mass spectrometry analytical method. The analytical method comprises the following steps: pretreatment of red wine sample to be detected, headspace solid-phase microextraction, gas chromatography/mass spectrometry analytical detection of the sample to be detected, gas chromatography/mass spectrometry analytical detection of standard sample, final result calculation and the like, wherein the headspace solid-phase microextraction step adopts an extraction fiber head with a divinylbenzene/carboxyethyl/polydimethylsiloxane coating. The analytical method disclosed by the invention is quick and accurate.

The invention discloses a foot pad with the deodorant function. The foot pad is prepared from, by weight, 10-12 parts of cocoanut active charcoal, 16-20 parts of negative ion powder, 7-15 parts of tourmaline powder, 8-12 parts of tea polyphenol, 9-11 parts of talcum powder, 12-15 parts of tea bar powder, 15-20 parts of bamboo fiber, 13-18 parts of epoxy chloropropane, 20-24 parts of polyvinyl chloride, 8-15 parts of polyethylene glycol, 9-14 parts of chitosan fiber, 8-13 parts of triphenyl ethyl phenol polyoxyethylene ether, 16-20 parts of isocyanate, 8-12 parts of sodium bicarbonate, 11-16 parts of amine oxide, 20-24 parts of sodium but and 18-20 parts of polypropylene fiber. The foot pad is good in structural elasticity and capable of generating negative ions, and the deodorant function is achieved.

The invention discloses a water-based inter-process environment-friendly antirust liquid which is prepared from the following raw materials in parts by weight: 2-3 parts of potassium silicate, 1-2 parts of sodium metasilicate, 1-2 parts of sodium benzoate, 6-9 parts of dicyclopentadiene acrylate, 50-60 parts of epoxy acrylate, 2-3 parts of rosin-polythylene oxide ester, 1-2 parts of triphenyl ethyl phenol polyoxyethylene ether, 1-2 parts of EDTA disodium, 4-5 parts of an auxiliary agent, and 300 parts of water. With use of the high-molecular resin and the chelating agent, a thin film can be formed on a metal surface, plays roles in isolating air and preventing oxidation, allows an antirust agent not to easily fall off, has the antioxidant function, improves the corrosion inhibition effect, is easy to clean up, and can be immediately removed by water washing; and the environment-friendly antirust liquid has small surface tension force to metals, is easy to coat, contains no sodium nitrite and other cancerogenic substances, has no volatile substances, has little harm to worker bodies, and is an ideal product for inter-process short-term rust prevention.

The invention relates to a method for preparing p-hydroxyacetophenone by catalytically and selectively oxidizing paraethyl phenol with a metalloporphyrin-metal salt composite catalyst. The method is characterized in that paraethyl phenol is taken as a raw material, methanol is taken as a solvent, metalloporphyrin expressed by a formula (I) or a formula (II) and a metal salt is taken as a composite catalyst or metalloporphyrin expressed by a formula (I), a formula (II) or a formula (III) is taken as the catalyst, the concentration of metalloporphyrin is 5-100ppm, the concentration of the metal salt is 500-2000ppm, the molar ratio of sodiumhydroxide to ethyl phenol is (1-2.5): 1, the oxygen pressure is 0.2-0.5MPa, the reaction temperature ranges from 60 to 90 DEG C, the reaction time is 3-7h, and p-hydroxyacetophenone is obtained under all the conditions. According to the invention, the dosage of the catalyst is extremely low and the reaction time is short; after reaction, the catalyst does not need to be separated and recovered; the consumption of resources and the operating cost are reduced in the reaction process, and the purposes of saving energy and reducing emission are achieved while the environmental pollution is reduced.

The present invention discloses a novel building exterior wall paint, which is composed of the following raw materials by weight: 10-15 parts of titanium dioxide, 20-25 parts of white latex, 5.8-8.6 parts of carboxymethylcellulose, 2.5-6.4 parts of sodium tripolyphosphate, 2.4-6.5 parts of ethylene glycol butyl ether, 2.4-6.2 parts of cinnamaldehyde, 1.4-3.7 parts of diphenyl-ethyl phenol polyoxyethylene ether, 3.5-7 parts of a polyurethane film-forming agent and 2.5-4.2 parts of white carbon black. Compared with the existing products, the product has good mold inhibitory effect, long service life, low production cost and soft smell. The white latex and carboxymethylcellulose as the base materials provide excellent adhesion for a variety of interior base surfaces, reduce water absorption capacity of the base layer to be coated, help color uniformity of the finishing coat, save paint consumption, improve glossiness, reduce overall costs of coating and make better brushing effect of the wall.

The invention discloses a hyperbranched ammonium salt type cationic surface active agent and a preparation method and application thereof. The hyperbranched ammonium salt type cationic surface active agent is formed by coupling polyethylene, styrene and phenol as monomers. The preparation method comprises the following steps that 1, 4-phenethyl phenol is synthesized; 2, 1-cyclopropyl methoxy-4-phenethyl benzene is synthesized; 3, polyethylene imido 1-cyclopropyl methoxyl-4-phenethyl benzene (HJM) is synthesized. The critical micelle concentration (CMC) is measured, and compared with a cationic surface active agent adopted on the market, the performance of the hyperbranched ammonium salt type cationic surface active agent is remarkably improved. The surface active agent is applied to pesticide stability, papermaking, nanocomposite modification, protein separation and inorganic particle dispersion, it is found that the effect of the hyperbranched ammonium salt type cationic surface active agent is best, and practical value is high.

The invention discloses a collecting agent for low-grade gold ores. The collecting agent comprises, by weight, 30-34 parts of diltiazem nitrile ester, 10-12 parts of alkyl xanthate acrylonitrile ester, 10-12 parts of ammonium dibutyl dithiophosphate, 1-2 parts of sodium hydroxide, 17-19 parts of styrene phosphoric acid, 3-4 parts of 4-butanediol vinyl ether, 1-2 parts of potassium dichromate, 2-3 parts of sodium metasilicate, 2-3 parts of diphenyl ethyl phenol-compounded polyoxyethylene ether, 1-2 parts of oleic acid polyoxyethylene ester, 5-7 parts of 2-peracetic acid-group butyric acid and 10-20 parts of activator. The collecting agent has the advantages that the collecting agent can realize capturing and foaming effects, foams are stable, and the collecting agent is high in collection capacity, so that the gold ores are high in recovery rate, selectivity and grade; owing to the activator, surface hydrophobic properties of the gold ores can be changed, internal structures of the gold ores can be activated, accordingly, the gold ore collection performance of the collecting agent can be improved, characteristics of the collecting agents can be played for the low-grade gold ores, the gold ores are high in recovery rate, and gold is high in grade.

The invention discloses a quick acaricidal pesticide. The quick acaricidal pesticide is prepared from the following raw materials in parts by weight: 6-11 parts of calcium dodecyl benzene sulfonate, 4-9 parts of ethyl acetoacetate, 1-5 parts of formic acid, 3-6 parts of dimethylbenzene, 2-4 parts of xanthan gum, 3-6 parts of diphenylene methanol, 6-8 parts of polyaspartic acid, 2-6 parts of radix sophorae flavescentis, 1-3 parts of magnesium aluminum silicate, 3-8 parts of ginger, 1-4 parts of cordate houttuynia, 4-9 parts of wheat germ, 3-5 parts of phenyl ethyl phenol polyoxyethylene ether, 2-6 parts of neem seeds and 0.2-1 part of aschersonia powder. The quick acaricidal pesticide has the beneficial effects of a good effect of killing various mites, a good effect of killing mite larva and low pesticide resistance.

The invention discloses a synthetic method of an anti-senile dementia medicinal rivastigmine racemic body, belonging to the technical field of medicinal chemistry. In the synthetic method, the rivastigmine racemic body is obtained by undergoing three steps of reactions on m-ethyl phenol serving as a raw material. The method has the advantages of readily-available raw materials, small quantity of reaction steps, easiness and safety for operating, environmental friendliness, low pollution and contribution to large-scale industrial production.

The invention belongs to the field of food detection, relates to a method for simultaneously detecting the content of 4-ethyl phenol (4-EP) and 4-ethyl guaiacol (4-EG) in red wine, and especially relates to a method for detecting through combination of headspace solid-phase micro-extraction-gas chromatography-mass spectrum. The invention aims to overcome the defect of the field of the present detection method for 4-EP and 4-EG in red wine and provides a method for simultaneous determination of the content of 4-EP and 4-EG in red wine by researching the optimal headspace solid-phase micro-extraction condition and the optimal gas chromatography-mass spectrum separation condition. The method mainly comprises the following steps: preparing an internal standard substance; performing headspace solid-phase micro-extraction; determining a standard curve; and performing gas chromatography-mass spectrum detection. The content of 4-EP and 4-EG in a sample can be calculated according to the obtained standard curve. Through verification, the method has the advantages of high speed, accuracy, convenience, higher precision and higher recovery rate.

The invention relates to a sweet soybean milk, which is composed of by weight 35-38 parts of soybean, 10-12 parts of sugar, 0.8-1.2 parts of Aspartame, 0.2-0.4 part of a stabilizer, 0.02-0.025 part of ethyl phenol and 1000 parts of water. The preparation method is as below: screening and peeling the soybean; immersing the soybean with hot water at 70-75 DEG C for 10-15 min; breaking and grinding the soybean, and filtering and separating through a filter; adding the stabilizer, spices, sugar, Aspartame and ethyl phenol, and stirring; and packaging and sterilizing to obtain a finished product. According to the technical scheme, an original grinding soybean milk is free of a variety of additives, preservatives and whole milk powder, and added with a proper amount of sugar and Aspartame, so as to prolong the shelf life of the product to a month; and the sweet soybean milk is slightly sweet, tastes good, and suits for adsorption by people.