132 results about "Ethanol" patented technology

The invention discloses a synthetic method of a water soluble ultraviolet light absorber BP-9. The method mainly comprises the following process steps: (1) carrying out methylation on the main raw materials of 2, 2', 4, 4'-tetrahydroxyl benzophenone, a transition metal salt catalyst and a mixed solvent which is prepared from dichloroethane and anhydrous ethanol in equal parts by weight to obtain 2, 2'-dihydroxyl-4, 4'-dimethoxyl benzophenone; (2) carrying out sulfonation reaction on the main raw materials of methylate, sulfamic acid and C1-C3 halohydrocarbon to obtain 2, 2'-dihydroxyl-4, 4'-dimethoxyl benzophenone-5, 5'-disulfonic acid; and (3) carrying out neutral reaction on the main raw materials of sulfonated product, inorganic base and ethanol water to finally obtain the BP-9 product. The synthetic method disclosed by the invention is few in reaction step, low in cost, high in product purity and stable in quality, and raw materials are easily available.

Devices, systems, and methods for measuring properties of liquids or surrounding gasses within a sealed container. Some embodiments of the devices, systems, and methods disclosed herein are useful for determining and monitoring alcohol (ethanol) content of a liquid within a sealed container. Some embodiments are also useful for determining and monitoring additional properties of the liquid within the sealed container, such as liquid depth (volume) and / or presence of trace chemicals and flavor components.

The application relates to the field of CO2 utilization and storage technology, and discloses a double Mannich base corrosion inhibitor as well as a preparation method and application thereof. The method is carried out under the condition that the pH is 3-4; the method comprises the following steps: (1) in the presence of ethanol, a compound shown in formula (A) is subjected to a first reaction with 1,3,5-trioxane to obtain an intermediate product; in formula (A), R is -(CH2)7CH=CH(CH2)7CH3; (2) in the presence of ethanol, the acetophenone is added dropwise into the intermediate product to carry out a second reaction, so that the double Mannich base corrosion inhibitor is obtained; the dropwise speed of the acetophenone is 0.0125-0.05 mL / s relative to 1 mol of the compound shown in formula (A); wherein the molar ratio of the compound shown in formula (A), the acetophenone and the 1,3,5-trioxane is 1:2.0-2.3:2.0-2.3. Formula (A).

The application discloses a method for purifying functionalized perfluoropolyether by complex extraction, comprising the following steps: dissolving a mixture containing non-functionalized perfluoropolyether and functionalized perfluoropolyether in a fluorine-containing organic solvent to obtain a raw material solution; contacting the raw material solution with a complex extraction agent; after extraction equilibrium, collecting a fluorine-containing organic solvent phase and concentrating to obtain non-functionalized perfluoropolyether; collecting a complex extraction agent phase and concentrating to obtain functionalized perfluoropolyether; at least one end group of the functionalized perfluoropolyether is -COOH, -CH2OH, -CH2SH or -NH2; the complex extraction agent is a mixed solution of an amine compound and a strong polar protic solvent, or a mixed solution of at least one of a carboxylic acid compound and a sulfonic acid compound and a strong polar protic solvent; and the strong polar protic solvent is one or more of methanol, ethanol, ethylene glycol, isopropanol, n-butanol and water.

A toner comprising a toner particle comprising a magnetic body, and a silica fine particle on a surface of the toner particle, wherein fragment ions corresponding to a D unit structure are observed in a specific measurement; when the silica fine particle is dispersed in a mixed solution of ethanol and aqueous solution of NaCl, followed by a titration operation using sodium hydroxide, a titer is within a specific range; in a chemical shift obtained by a specific measurement, with D as an area of a peak having a peak top present in a range from −25 to −15 ppm, and with D1 as an area of a peak having a peak top present in a range of more than −19 ppm and −17 ppm or less, D and D1 are in a specific ratio; and the magnetic body is present on the surface of the toner particle.

This invention provides a low glycemic index blueberry extract and its preparation method, belonging to the field of beverage processing technology. The preparation method includes the following steps: blueberries are pulped, then fermented using a compound strain of Lactobacillus acidophilus, Lactobacillus plantarum, and Bifidobacterium, filtered through a membrane filtration device to obtain a blueberry fermentation broth; blueberries are crushed, the pH of an ethanol solution is adjusted to 2-3 with citric acid, followed by ultrasonic extraction, centrifugation to collect the supernatant, and then vacuum distillation of the supernatant to obtain anthocyanin extract concentrate; the anthocyanin extract concentrate is freeze-dried to obtain anthocyanin extract dried product; the anthocyanin extract dried product and blueberry fermentation broth are mixed evenly at a mass-volume ratio of (0.2-0.3) g:1L, then maltitol is added to adjust acidity and sweetness, homogenized, filtered, and sterilized to obtain the blueberry extract. By using compound probiotic fermentation to reduce sugar content and combining it with alcohol extraction to enhance anthocyanins and improve efficacy, the resulting product has anthocyanin content ≥400 mg / L and a low GI.

The application relates to the technical field of plastic pallets, and discloses a high-strength plastic pallet and a preparation method thereof, wherein the raw materials of the plastic pallet include the following components in parts by weight: 100 parts of polypropylene, 15-20 parts of cis-butadiene rubber, 1-3 parts of polytetrafluoroethylene, 1-3 parts of a compatilizer, 10-20 parts of a filler, 10-15 parts of glass fiber, 5-10 parts of a plasticizer, 1-2 parts of an antioxidant and 2-5 parts of a flame retardant; the raw materials of the filler include the following components in parts by weight: 100 parts of titanium dioxide and 7-10 parts of a modifier; the modifier is composed of a silane coupling agent and p-aminophenethyl alcohol. Through the technical scheme, the problem of insufficient strength of the plastic pallet in the related art is solved.

The present application relates to the technical field of adsorbing material, and particularly relates to a modified silica gel adsorbent and a preparation method and application thereof; comprising the following steps: S1, dispersing silica gel particles in ethanol to obtain a dispersion liquid; S2, adding ammonia water and deionized water into the dispersion liquid of step S1; S3, adding a silane coupling agent into the mixed liquid of step S2; S4, heating and stirring the mixed liquid of step S3, and washing after the reaction to obtain a modified silica gel adsorbent; the modified silica gel adsorbent prepared by the preparation method has a high-efficiency tar-reducing function, can significantly regulate cigarette smoke release, and can effectively control the loss of nicotine and moisture while greatly reducing the tar release, and has excellent comprehensive balance.

A method for converting ethanol, comprising a reaction step of feeding a mixed raw material containing ethanol into a reactor having a fixed bed filled with a zeolite-containing catalyst to obtain a reaction gas containing an olefin having 3 or more carbon atoms and water, wherein a zeolite contained in the zeolite-containing catalyst has an oxygen 10-membered ring structure, a molar ratio of Na / Al of the zeolite-containing catalyst is from 0.0050 to 0.25, and an acid content per weight of the zeolite-containing catalyst determined from an amount of ammonia desorbed at from 100 to 650°C in ammonia temperature-programmed desorption measurement of the zeolite-containing catalyst is 75 µmol / g or less.

The application belongs to the technical field of detection and analysis, and discloses a normal phase detection method for imine reaction control. The method is detected by normal phase liquid chromatography, and the detection conditions include: a polysaccharide derivative normal phase coated type chiral chromatographic column is used, and a mixed solution of n-hexane, ethanol, ethylenediamine and trifluoroacetic acid is used as the mobile phase, wherein the volume ratio of n-hexane, ethanol, ethylenediamine and trifluoroacetic acid is (75-85):(15-25):(0.05-0.15):(0.05-0.15). The method can realize effective separation, detect the content of 1,2,3,4,10,14B-hexahydrodibenzo[C,F]pyrazino[1,2-A]azepine in the reaction solution, and has the advantages of simplicity, accuracy, rapidness and reliability.

This invention discloses a thin-layer chromatography method for identifying health tonics, comprising: preparing a test sample solution; preparing a reference herbal solution; preparing a reference standard solution; taking 1-2 μl of each of the above three solutions and spotting them separately in strip form on the same high-efficiency silica gel G thin-layer plate; using the upper layer solution of n-butanol-ethyl acetate-water in a volume ratio of 1-8:0.1-1:1-7 as the developing solvent; developing to approximately 15 cm; removing, air-drying, spraying with 10% sulfuric acid ethanol solution, and heating at 105°C until the spots are clearly visible; and examining under sunlight and ultraviolet light (365 nm). This invention can effectively solve the problem of astragaloside A and ginsenoside R in health tonics through a simple processing method. f The problem of mutual interference. This provides a basis for the identification of health wines and a reference for product quality control.

The present invention aims to provide a liquid oral composition that can suppress the reduction in flavor expression caused by glycyrrhizic acid or its salts by incorporating acyl amino acids or their salts. [Solution] A liquid oral composition comprising: (A) component: at least one selected from the group consisting of glycyrrhizic acid and its salts; (B) component: at least one selected from the group consisting of acyl amino acids and their salts; and (C) component: a fragrance, wherein the ratio of the content of component (A) to the content of component (B) is 0.625 to less than 2.2 when component (B) contains acyl sarcosine and its salts, and 0.03 to less than 5 when component (B) does not contain acyl sarcosine and its salts, and substantially free of ethyl alcohol.

The application discloses an acid pickling corrosion inhibitor prepared based on bamboo pulp papermaking black liquor, and a preparation method and application thereof, and relates to the technical field of acid pickling corrosion inhibitors. The method comprises the following steps: (1) adding concentrated sulfuric acid into the bamboo pulp papermaking black liquor, adjusting the pH value of the solution to 1-3, and then fully reacting, standing and settling, and separating to obtain a precipitate A and a filtrate A; the precipitate A is washed and dried to obtain lignin; (2) the filtrate A is concentrated through multi-effect vacuum reduced pressure evaporation to obtain a precipitate B; (3) the precipitate B is extracted through sewage ethanol extraction, suction filtration and washing to obtain an ethanol extraction liquid and a precipitate C; the ethanol extraction liquid is distilled through reduced pressure distillation to obtain an ethanol extraction liquid; the precipitate C is recrystallized, and after removing solid inorganic salts, the precipitate C is distilled through reduced pressure distillation to obtain a distillation liquid; the ethanol extraction liquid and the distillation liquid are mixed, and then evaporated through reduced pressure evaporation and dried to obtain the acid pickling corrosion inhibitor.

The application provides a compound extract for treating gastric ulcer, a preparation method and application thereof, and belongs to the technical field of medicines. The compound extract is obtained by using medicinal materials of pachouli and high kankyo through an ethanol degreasing, water extraction and alcohol precipitation process. The application has the advantages of few medicinal materials, simple extraction and preparation process and easy industrialization. Animal efficacy and mechanism researches show that the compound extract can protect the gastric mucosal barrier by synergistically improving the function of the mitochondrial electron transport chain and enhancing the antioxidant stress capacity, and can effectively prevent and treat gastric ulcer.

The application discloses a coating for surface treatment of a scroll disc, a preparation method and a spraying process thereof, and relates to the technical field of coatings.The modified nano graphite powder is obtained by modifying the nano graphite powder after oxidation treatment through a silane coupling agent, and then combined with polyvinyl alcohol, nano PTFE particles, a dispersing agent, polyvinylpyrrolidone, a leveling agent and ethanol to prepare a high-performance coating for surface treatment of the scroll disc.The coating is sprayed onto the scroll disc through three main steps of preliminary spraying, respraying and final spraying under optimized process parameters by using a trace air pressure self-flowing spray gun and cooperating with a rotary turntable, so that the friction resistance of the scroll disc after spraying is greatly improved, and the service life of the scroll disc is greatly prolonged.

This skin cosmetic provides a pleasant feel upon application, leaves the skin feeling plump after application, and maintains a smooth and plump skin condition even after wearing a mask. [Solution] A skin cosmetic is provided that is free of dihydric alcohols having 6 or more carbon atoms and phenoxyethanol, characterized by containing (A) 1 to 20% by mass of 1,3-propanediol, (B) 0.5 to 4% by mass of 1,2-pentanediol, (C) 0.01 to 0.5% by mass of glycerin mono-2-ethylhexyl ether, and (D) 0.00001 to 0.001% by mass of ceramide.

The application provides a method for improving the stability of water-soluble active substances. The method comprises mixing a solution containing water-soluble active substances, ethanol, ammonia, cetyltrimethylammonium bromide, tetraethyl orthosilicate and a reducing agent, performing hydrophobic treatment after reaction, and then dispersing in an oil phase for storage. The water-soluble active substances are wrapped in mesoporous silica by a specific process, the surface and mesoporous channels of the silica are modified by hydrophobic treatment, and then the silica is dispersed in an oil phase, so that the water-soluble active substances can avoid contact with external stimulating factors such as water molecules, oxygen and metal ions, thereby effectively improving the stability of the water-soluble active substances in long-term storage and further widening the application range of the water-soluble active substances.

This invention belongs to the field of novel pharmaceutical uses, and more specifically, relates to the application of ethyl acetate extract of turmeric in the preparation of drugs for treating colorectal cancer. The preparation method of the extract is as follows: turmeric slices are soaked overnight in 15 times their weight of a 70% (v / v) ethanol solution, refluxed at 85°C three times, 2 hours each time. The extracts are combined and concentrated until no alcohol odor remains. The extract is then dried to constant weight to obtain the total extract. The total extract is reconstituted with water and extracted three times with ethyl acetate at an equal volume ratio. The extracts are combined and dried to constant weight to obtain the final product. Experimental results show that this extract is particularly effective in improving disease activity index, restoring colon length, reducing tumor number, and alleviating histopathological damage, and has no significant toxicity to major organs. This extract can be formulated into oral or injectable preparations, providing a new natural drug candidate for the treatment of colorectal cancer.

The application belongs to the technical field of environmental functional material preparation, and provides a coordination cross-linking shell-imitating hydrogel super-wetting graphene film material, a preparation method and application thereof. A polyvinyl alcohol-tannic acid (PVA- TA) mixed solution is prepared by using a mixture of ethanol and water as a solvent; then, the solution is mixed with a GO solution to obtain a ternary self-assembled solution; the ternary self-assembled solution is deposited on a base film, and Fe 3+ is used for coordination cross-linking, so that the coordination cross-linking shell-imitating hydrogel super-wetting graphene film is obtained. Through various characterization methods, the physical morphology and wetting characteristics of the composite material are revealed, and the performance of the composite material in separating oil stains and soluble pollutants in water is studied.

The application belongs to the technical field of compound synthesis, and particularly relates to a preparation method of dipyrone with controlled content of 4-N methylene sulfonic acid sodium dipyrone impurity, which comprises the following steps: dissolving 4-formylaminoantipyrine in water, and then adding dimethyl sulfate and lye to react to obtain a methylation liquor; the obtained methylation liquor is hydrolyzed and neutralized, and then is left to stand and separate into layers, the upper 4-methylaminoantipyrine oil is cooled and crystallized to obtain 4-methylaminoantipyrine solid; the obtained 4-methylaminoantipyrine solid, ethanol, sodium pyrosulfite, activated carbon and formaldehyde are mixed to react to obtain dipyrone; the mass percentage of 4-aminoantipyrine in the 4-formylaminoantipyrine is not more than 1.5%. The content of 4-N methylene sulfonic acid sodium dipyrone (unknown impurity) in the prepared dipyrone is less than or equal to 0.05%, which meets the requirements of the European Pharmacopoeia.

The application relates to the field of capsaicin extraction, in particular to a natural capsaicin extraction method, which comprises the following steps: S1, qualified dry chillies are conveyed and torn into pieces through a chilli crusher; S2, the chilli pieces are continuously, quantitatively and airtightly conveyed to a countercurrent extractor set through a conveying auger, meanwhile, ethanol is added, the concentration of the ethanol is 70%, and continuous countercurrent extraction is carried out at a certain temperature, the temperature is 50 DEG C; the filtrate is filtered through a drum filter and a plate filter to obtain clean extraction liquid, and the extraction liquid is pumped into an extraction liquid clean liquid tank. The chilli pieces are airtightly conveyed through the countercurrent extractor set, so that the capsaicin is kept in a sealed environment, when the capsaicin extraction efficiency is improved by heating the ethanol in the later stage, the sealed environment can effectively reduce the direct leakage of the volatilized ethanol, reduce the waste of the ethanol, and the volatilized alcohol is recycled through hot steam in the later stage.

This invention relates to a method for preparing yttrium oxide with a large specific surface area. The method includes the following steps: S1, dissolving yttrium salt and adding tetramethylammonium hydroxide to precipitate; S2, washing with distilled water and centrifuging to dehydrate; S3, washing with ethanol and dehydrating; S4, adding diethylene glycol monobutyl ether and mixing evenly to form a paste; S5, calcining the paste formed in step S4 at a low temperature to form a powder; S6, adding anhydrous ethanol to the powder obtained in step S5 and ball milling; S7, drying. This invention uses tetramethylammonium hydroxide for precipitation, whose spatial structure reduces agglomeration. After washing, multiple washes with ethanol remove moisture, and then diethylene glycol monobutyl ether solution is added to form a paste, further reducing agglomeration during calcination. The calcination temperature is only 600-750℃, which is energy-saving and environmentally friendly. During ball milling, anhydrous ethanol is added, eliminating moisture during the process and reducing agglomeration. The yttrium oxide prepared by this method has a specific surface area of ​​100-200 m² / g. 2 / g.

The invention provides a disinfection method of a ginseng explant, which comprises the following steps: soaking and disinfecting the ginseng explant by using a chemical disinfectant, soaking the soaked and disinfected explant into a first ethanol solution, taking out, igniting residual ethanol on the surface of the explant, burning, and cooling. According to the method disclosed by the invention, conventional chemical disinfection and high-concentration ethanol infiltration-flame burning are creatively combined, and the step-by-step and synergistic sterilization strategy is particularly suitable for explants with complicated structures, such as ginseng roots. Compared with a traditional disinfection method needing long-time soaking and multiple times of rinsing, the method has the advantages that the total disinfection time is greatly shortened and the explant preparation efficiency is remarkably improved by introducing an instantaneous firing step, and the explant preparation efficiency is greatly improved by reducing the total contact time of a chemical disinfectant, inactivating surface polyphenol oxidase by utilizing instantaneous high temperature and combining rapid cooling. The browning reaction is effectively inhibited, and the activity of the explant is ensured.

The application discloses a creamy bath salt composition and a preparation method and application thereof. The creamy bath salt composition is obtained by optimizing the proportion of polyvinylpyrrolidone, ethanol, polyethylene glycol-400 and water, and has a suitable consistency, can be made into various beautiful shapes through a piping process, and widens product forms and interestingness of the bath salt. Meanwhile, the creamy bath salt composition has good solubility, moisturizing property and use experience. In addition, compared with commercially available products, the product has significant advantages in texture, use convenience and moisturizing effect, and has a scientific and reasonable formula and good stability, so that the product can meet the needs of users and is suitable for industrial production.

The present application relates to a kind of initiator of preparation triangular nano silver base ethylene oxide catalyst and its application, it is related to the technical field of ethylene oxide catalyst preparation, the initiator includes the following components by weight percentage: water 5~20wt%, polyvinylpyrrolidone 0.1~20wt%, normal alkane alcohol 65~85wt% and ethanol 1~20wt%;Wherein, the normal alkane alcohol is at least one in C3~C6 normal alkane alcohol.The present application is by using the initiator of this specific composition as the mother liquor system of silver base ethylene oxide catalyst impregnation liquid, the morphology control is applied to silver base ethylene oxide catalyst, after silver is uniformly dispersed in carrier, morphology is controlled synthesis, and triangular nano silver morphology silver base ethylene oxide catalyst is prepared, the preparation of controllable morphology controllable nano silver catalyst is realized, the contact area of nano silver with reactant is increased, to improve the performance of triangular nano silver base ethylene oxide catalyst.