731 results about "Acetophenone" patented technology

The invention discloses a method for catalytically oxidizing lignin to depolymerize into an aviation oil intermediate by using a cellulose carbon aerogel supported copper nano-catalyst. Comprising the following steps: (1) dissolving cellulose powder into a mixed alkali solution of NaOH and urea, and stirring at low temperature to obtain a clear and transparent cellulose solution; and washing to be neutral to obtain well dispersed cellulose suspension. And (2) carrying out suction filtration molding, and freeze-drying for a period of time to obtain the cellulose aerogel. And (3) immersing in an ethanol solution of copper nitrate for ultrasonic treatment, and drying in a vacuum drying oven. And (4) carrying out high-temperature calcination in an N2 atmosphere to obtain a catalyst which is marked as Cu / CA. And (5) the catalyst can efficiently catalyze a Fenton-like reaction to oxidize a dimer model compound of lignin in acidic, neutral and alkaline environments to obtain products including benzoic acid, acetophenone, benzyl alcohol, phenol and the like, the required hydrogen peroxide concentration is low, and the catalyst has the advantages of simple process, high catalytic activity, low cost and the like, can be used for effectively degrading lignin to prepare aviation oil intermediates, and has wide application prospects. And repeated cyclic utilization is realized.

The invention relates to the field of catalysts, and discloses a hydrogenation catalyst, a preparation method and application thereof, and a method for preparing alpha-methylbenzyl alcohol, the hydrogenation catalyst comprises a hydrogenation active component and a SiO2 carrier; the surface of the catalyst is modified by siloxane groups. The hydrogenation catalyst has the characteristics of high low-temperature hydrogenation activity and long service life. The hydrogenation catalyst is used in a liquid phase hydrogenation reaction and has high catalytic activity, so that a low-temperature liquid phase reaction can be better carried out, for example, the hydrogenation catalyst is used in preparation of alpha-methylbenzyl alcohol, the raw material acetophenone can obtain a high conversion rate, the alpha-methylbenzyl alcohol has high selectivity, and meanwhile, the hydrogenation catalyst is long in service life.

The invention provides an additive composition containing a bioactive enzyme and a preparation method of the additive composition, and belongs to the technical field of biological enzymes. The preparation method comprises the following steps: fixing phytic acid and cyclodextrin on hydroxyapatite, modifying with tannic acid, reacting with dithiothreitol modified lysozyme to prepare an immobilized compound, adding 2, 2-dimethoxy-2-phenylacetophenone and methyl methacrylate, and carrying out irradiation reaction with an ultraviolet lamp to prepare the additive composition containing the bioactive enzyme. The broad-spectrum antibacterial property and the antiviral property of the lysozyme are greatly improved, the sterilization effect on gram negative bacteria is obviously improved, meanwhile, the stability of enzyme is greatly improved, the enzyme is not prone to inactivation, the preservation time of the enzyme is prolonged, the application effect of the enzyme is widened, meanwhile, the lysozyme has good killing capacity on oral bacteria and viruses, the addition of preservatives is reduced, and the cost is reduced. The cleaning effect and stability of the product are improved, tooth demineralization can be prevented, decayed teeth can be prevented, and wide application prospects are achieved.

The invention belongs to the technical field of cosmetics, and discloses skin-tightening and anti-wrinkle essence. The skin-tightening anti-wrinkle essence is prepared from the following raw materials in percentage by mass: 1.5 to 2.5 percent of acetyl hexapeptide-8, 2.0 to 3.0 percent of palmitoyl pentapeptide-4, 3.0 percent of hydroxypropyl tetrahydropyrantriol, 2.0 percent of lipidosome-coated vitamin C ethyl ether, 0.5 percent of resveratrol PLGA microspheres, 0.8 percent of ceramide NP, 1.2 percent of pachymaran, 5.0 percent of glyceryl polyether-26, 0.3 percent of sodium hyaluronate, 0.5 percent of p-hydroxyacetophenone and 1, 3-propanediol, 0.5 percent of sodium hyaluronate, 0.5 percent of sodium hyaluronate, 0.5 percent of sodium hyaluronate and the balance of water. The 1, 2-hexanediol accounts for 0.6%, and the balance is deionized water. Multi-target anti-wrinkle, deep moisturizing and long-acting repairing are achieved by scientifically compounding active ingredients such as acetyl hexapeptide-8 and palmitoyl pentapeptide-4 and combining a lipidosome wrapping technology and a nano-microsphere slow release technology, the preparation process comprises the steps of lipidosome homogenization, nano-microsphere multiple emulsion method and low-temperature emulsification, the ingredient stability and transdermal efficiency are ensured, and the skin care effect is good. Experiments prove that the essence can significantly improve skin elasticity and reduce wrinkles, and has a significant anti-aging effect.

The invention discloses an anti-fog automobile glass film and a preparation method thereof, and relates to the technical field of glass films. The anti-fog automobile glass film prepared by the invention is prepared from modified polyacrylate, modified silicon dioxide and pyrrole, the modified polyacrylate is obtained by reacting polyacrylate with 4-ethynyl acetophenone, and then reacting with 1H-pyrrole-3-formaldoxime; the modified silicon dioxide is obtained by formylating amino silicon dioxide coated with sodium alginate and then polymerizing the formylated amino silicon dioxide, 4, 4 '-diformyl-2, 2'-disulfonic acid biphenyl and pyrrole-3-formaldehyde. The anti-fog automobile glass film prepared by the invention has good antibacterial, anti-aging and photocatalytic properties.

The invention discloses a preparation method and application of a photo-thermal dual-response membrane material, and relates to the field of membrane materials. When the photo-thermal double-response membrane material is prepared, a photo-thermal material firstly reacts with 4-(triethoxysilyl) aniline and then reacts with 2, 4, 6-trihydroxy-1, 3, 5-benzenetricarboxaldehyde and p-phenylenediamine, and a modified photo-thermal material is prepared; the preparation method comprises the following steps: sequentially reacting benzaldehyde with 2-hydroxyacetophenone and 3-N, N-dimethylamino methacryloyl chloride to prepare a photo-initiation monomer; the preparation method comprises the following steps: mixing N-isopropylacrylamide, a photo-initiation monomer, N, N '-methylene bisacrylamide and a modified photo-thermal material, combining with a hydrophobic substrate membrane, preparing a membrane, and finishing the surface by using 2-bromo-1-[3, 5-di (tert-butyl)-4-hydroxyphenyl] ethanone, thereby obtaining the photo-thermal dual-response membrane material. The photo-thermal dual-response membrane material prepared by the invention has the characteristics of pollution resistance, easiness in cleaning, durability, antibacterial property, metal ion recovery and low energy consumption.

The invention discloses a modified polyether-ether-ketone composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The modified polyether-ether-ketone composite material comprises the following raw materials in parts by weight: 60-85 parts of a polyether-ether-ketone resin matrix; 5 to 15 parts of carbon fiber; 5 to 20 parts of modified nano silicon dioxide; 5 to 10 parts of hydroxyapatite; 0.5 to 2 parts of a coupling agent; 2 to 4 parts of compatilizer; the preparation method comprises the following steps: carrying out nucleophilic substitution reaction on p-hydroxyacetophenone and 2-chloro-5-nitro-trifluoromethyl benzene to obtain an intermediate 1; carrying out a benzene cyclization reaction on the intermediate 1 to obtain a trinitro compound; then under the action of hydrazine hydrate, reducing the fluorine-containing triamine monomer into a fluorine-containing triamine monomer; then, the fluorine-containing triamine monomer reacts with 4, 4 '-(hexafluoroisopropenyl) diphthalic anhydride to prepare a modified compatilizer; the modified polyether-ether-ketone composite material prepared by the invention has excellent tensile strength, corrosion resistance and wear resistance.

The invention provides a preparation method of a block poly (biphenyl-trifluoroacetophenone-piperidone) bicontinuous hollow fiber loose nanofiltration membrane, which comprises the following steps: adding acid into biphenyl and N-methyl-4-piperidone to react to obtain a first product; adding acid into biphenyl and 2, 2, 2-trifluoroacetophenone to react, so as to obtain a second product; adding the second product into the first product, and carrying out condensation polymerization to obtain a PBTbBP block polymer; dissolving the PBTbBP block polymer in a solvent, and defoaming to obtain a membrane casting solution; spinning the membrane casting solution and the core solution to obtain membrane filaments; and immersing the membrane filaments in a coagulating bath, and carrying out phase separation. According to the preparation method, biphenyl, a hydrophobic trifluoroacetophenone monomer and a hydrophilic N-methyl piperidone monomer are subjected to superacid catalysis Friedel-Crafts reaction and are subjected to step-by-step copolymerization to obtain the amphiphilic block polymer PBTbBP. The membrane has efficient mass transfer channels and excellent membrane surface hydrophilicity, and the separation capacity of dye molecules and salt ions and the water permeability are improved.

The invention relates to a compound preservative and moisturizing cream added with the compound preservative, and the compound preservative is prepared from the following components in parts by mass: 15-25 parts of hydroxyacetophenone, 7-35 parts of caprylyl glycol and 50-70 parts of isohexylene glycol. The invention further relates to application of the compound preservative in preparation of cream cosmetics, and the addition amount of the compound preservative in the cream cosmetics is 0.5-1 part by mass. The antibacterial spectrum of a single preservative is generally narrow, and the single preservative is only effective to some specific types of microorganisms and cannot comprehensively inhibit various microorganisms possibly existing in cosmetics. According to the invention, multiple anti-corrosion components are compounded, so that the anti-corrosion effect is synergistically improved, efficient anti-corrosion can be realized, and the safety and the environmental protection property can be ensured.

The invention relates to the technical field of cables, and provides a flexible cable for a robot, which comprises a cable core and a sheath layer wrapping the cable core, the cable core comprises signal lines and power lines. Each signal line sequentially comprises a conductor, a belting layer and a shielding layer from inside to outside; the shielding layer sequentially comprises a first shielding layer and a second shielding layer from inside to outside; the first shielding layer is a bare copper wire mesh layer; the second shielding layer is a tinned copper wire mesh layer; the belting layer is a glass fiber tape layer; the sheath layer comprises the following raw material components in parts by weight: 80-90 parts of polyvinyl chloride resin, 20-30 parts of a plasticizer, 2-4 parts of an anti-aging agent, 2-4 parts of a calcium-zinc stabilizer, 1-4 parts of a lubricant and 6-16 parts of a flame retardant; the plasticizer is prepared from dioctyl phthalate, polyethylene glycol adipate and p-methoxyacetophenone. According to the technical scheme, the problem of low elongation at break of the flexible cable for the robot in the prior art is solved.

The invention discloses a beautifying essence which comprises the following components in percentage by weight: 1% of bifidus yeast fermentation liquor, 3% of boine, 2% of nicotinamide, 0.3% of gallnut extract, 1% of purslane extract, 0.3% of allantoin, 0.2% of centella asiatica extract, 0.3% of tocopherol extract, 0.5% of aesculus chinensis extract, 2% of vitamin E, 0.05% of xanthan gum, 0.05% of sodium hyaluronate, 0.2% of carbomer, 0.5% of p-hydroxyacetophenone, 0.5% of 1, 2-propylene glycol and the balance of water. The cleaning agent is prepared from, by weight, 0.5% of 1, 2-hexanediol, 5% of glycerin, 4% of PEG / PPG-14 / 7 dimethyl ether, 2.2% of glycosylglycerol, 0.2% of tetrahydroxypropyl ethylenediamine, 3% of polyglycerol-3, 0.05% of PDRN powder and the balance water. Effect evaluation test results show that the beauty essence can inhibit the activity of elastase and increase the content of type I collagen in human primary fibroblasts, so that the firming and anti-wrinkle effects are achieved.

The invention discloses bacillus subtilis and application thereof, and belongs to the technical field of microorganisms. According to the invention, a degradation strain capable of improving cellulose and lignin in cigar tobacco leaves is screened out, and after the strain is fermented, the activity of supernate cellulase, the activity of supernate laccase, the activity of supernate manganese peroxidase and the activity of supernate lignin peroxidase are respectively 11.21 U / mL, 26.82 U / mL, 6.31 U / mL and 3.78 U / mL. After fermentation optimization, the activity of cellulase, the activity of laccase, the activity of manganese peroxidase and the activity of lignin peroxide are 30.29 U / mL, 42.69 U / mL, 8.96 U / mL and 5.74 U / mL respectively. The strain Y-C4 is applied to tobacco leaf fermentation, fermented tobacco leaves generate substances including solanesol, acetophenone, geranyl acetone, beta-ionone, myristic aldehyde and the like, and the strain has an excellent application prospect in tobacco leaf fermentation.

The invention provides an imidazo [1, 2-alpha] pyridine stimuli-responsive molecule with a D-A twisted structure as well as a preparation method and application of the imidazo [1, 2-alpha] pyridine stimuli-responsive molecule, belongs to the technical field of intelligent materials, and is used for solving the technical problem that intelligent materials for developing stimuli-responsive molecules for data encryption and information anti-counterfeiting are insufficient. The preparation method of the compounds N1 and N3 comprises the following steps: 2-aminopyridine and 2, 4 '-dibromoacetophenone are subjected to an amphiphilic reaction to obtain a compound a; the compound a and POCl3 are subjected to a Vilsmeier-Haack reaction, and a compound b is obtained; carrying out Suzuki coupling reaction on the compound a or the compound b and triphenylamine boric acid to obtain a compound N1 or N2; the compound N2 and malononitrile are subjected to a Knovenagel condensation reaction, and a compound N3 is obtained. The compound prepared in the invention has good fluorescence emission capability in a solution and a solid state and a grinding solvent acid / alkali stimulated fluorescence discoloration behavior, and can realize good data encryption and information anti-counterfeiting.

The invention provides an anti-hair-loss and hair-growing product containing plant extract components and a preparation method thereof, and relates to the field of wash supplies, the anti-hair-loss and hair-growing product is prepared from the following raw materials by weight: 50-80 parts of water, 5-10 parts of propylene glycol, 1-5 parts of 1, 3-propylene glycol, 1-5 parts of 1, 3-propylene glycol, and 1-5 parts of 1, 3-propylene glycol. The composition is prepared from the following components in parts by weight: 0.1 to 1 part of 1, 2-pentanediol, 0.1 to 1 part of pyrrolidinyl diaminopyrimidine oxide, 0.1 to 0.5 part of diaminopyrimidine oxide, 0.01 to 0.02 part of caffeine, 0.01 to 0.1 part of adenosine, 0.05 to 0.2 part of vitamin B6, 0.01 to 0.5 part of biotin tripeptide-1, 0.1 to 1 part of dipotassium glycyrrhizinate, 0.02 to 0.05 part of ethylenediamine tetraacetic acid, 0.1 to 1 part of D panthenol, 0.2 to 1 part of p-hydroxyacetophenone, 0.01 to 1 part of 1, 2-pentanediol, 0.1 to 1 part of 1, 2-pentanediol, 0.1 to 1 part of 2, 2-pentanediol, 0.1 to 1 part of 2, 2-pentanediol, 0.1 to 1 part of 2, 2- The composition comprises the following components in parts by weight: 1-2 parts of 1, 2-hexanediol, 0.1-0.5 part of citric acid, 1-2 parts of 1, 3-butanediol, 0.01-1 part of NMN and 3-5 parts of a plant extract. According to the present invention, the extraction method of the plant extract in the raw materials is specifically adjusted so as to significantly reduce the content of the pigment and the odor substance in the extract, such that the obtained hair growing liquid has characteristics of good hair growing effect, light color and light drug taste, can be easily accepted by consumers, and is suitable for large-scale promotion and application.

The present invention relates to the technical field of skin care products, and specifically discloses a soothing smoothie cream containing Centella asiatica extract and a preparation method thereof. The soothing smoothie cream containing Centella asiatica extract includes phase A, phase B, phase C, and phase D, wherein phase A is a compound of solvent, glycerol, butylene glycol, erythritol, allantoin, sodium carbomer, p-hydroxyacetophenone, polypropylene (ester) class / C10-20 alkyl acrylate cross-linked polymer; phase B is a compound of hydrogenated polyisobutene, caprylic / capric triglyceride, and polyglycerol-3 methyl glucose distearate; phase C is arginine; phase D is a compound of 1,2 hexanediol, dipotassium glycyrrhizate, saccharide isomers, Centella asiatica extract, white iris root extract, centella roxburghii extract, and white oak bark extract. The present invention has the advantage of further improving the soothing effect of skin care products.

The invention provides a method for comprehensively utilizing phenolic ketone tar and a petroleum fracturing proppant, and the method comprises the following steps: (1) mixing phenolic ketone tar and an acid catalyst to carry out a first heating reaction, and then adding an aldehyde compound to carry out a second heating reaction to obtain a phenolic resin mixture; (2) carrying out negative pressure rectification on the phenolic resin mixture to obtain a tower top material and a tower kettle material; wherein acetophenone is obtained after the tower top material is layered, and the tower kettle material comprises phenolic resin; (3) carrying out ring-opening reaction on the mixed phase transfer catalyst, epoxy chloropropane and phenolic resin, then adding alkali to carry out ring-closing reaction, and separating to obtain novolac epoxy resin; and (4) mixing the curing agent, the accelerant and the novolac epoxy resin for stirring reaction to obtain the petroleum fracturing propping agent. According to the method provided by the invention, acetophenone in the phenolic ketone tar can be separated out, the petroleum fracturing propping agent can be produced at the same time, the recovery energy consumption can be reduced, no solid waste is discharged, and the environmental protection requirement is met.

The present invention discloses a strong, non-toxic, antibacterial and antiviral nano-functional material and a preparation method thereof. The nano-functional material is green, non-toxic and harmless, and its antibacterial and antiviral effect can reach more than 99%. The new nano-material innovatively uses the natural antibacterial agent meta-dichlorostyrene meta-dichloroacetophenone as the main body of the material to exert its antibacterial and antiviral effects. This makes the new nano-material not only have extremely strong antibacterial and antiviral effects, but also as a natural antibacterial agent, when it is used as a textile material, it can be non-toxic and harmless to the human body, green and healthy. It has a better inhibitory effect on both Gram-negative and Gram-positive bacteria than nano-copper oxide and meta-dichlorophenylethanol and meta-dichloroacetophenone. The present invention also provides a preparation method for the nano-functional material, which includes chemical reaction processes such as boron hydrolysis reaction, catalytic oxidation reaction, electrocarboxylation reaction, and esterification reaction.

The invention provides a preparation method of an imrecoxib intermediate as shown in a formula I. The preparation method is characterized by comprising the following steps: reacting p-tolueneacetic acid with 4-methylsulfonyl chloroacetophenone in the presence of halogenated salt and an organic solvent to generate the imrecoxib intermediate I: # imgabs0 #. The method is low in cost, green and environment-friendly, simple in process operation, less in side reaction, simple and convenient in post-treatment and high in purity of the obtained finished product, and sulfoxide impurities are not easy to form; the preparation method greatly alkalifies the technological process, is mild in reaction condition, controllable in reaction process quality and high in yield, has the cost advantage and is suitable for industrial mass production.

The present invention relates to detergents and cleaning compositions that comprise a surfactant, an anti-redeposition agent, and an effective amount of 1,2-heptanediol and / or 2,3-heptanediol or a specific type of anti-redeposition boosting agent, such as alkanediols, glyceryl caprylate, 4-hydroxyacetophenone, ethyl hexyl glycerin or tropolone, and the use of said detergents and cleaning compositions for the preparation of a detergent and cleaning product for household, institutional and industrial application. Furthermore, the present invention relates to a method of treating a stained and / or soiled substrate, using the detergents and cleaning compositions according to the present invention. Additionally, the present invention relates to the use of 1,2-heptanediol and / or 2,3-heptanediol or of specific substances as defined herein for boosting the activity of an anti-redeposition agent in a detergent and cleaning composition and / or for improving cleaning performance of a detergent and cleaning composition. Moreover, the present invention relates to a method of boosting the activity of an anti-redeposition agent in a detergent and cleaning composition and / or of improving cleaning performance of a detergent and cleaning composition by adding an effective amount of 1,2-heptanediol and / or 2,3-heptanediol or of specific anti-redeposition agents, such as alkanediols, glyceryl caprylate, 4-hydroxyacetophenone, ethyl hexyl glycerin or tropolone to said detergent and cleaning composition. Finally, the present invention relates to the use of 1,2-heptanediol, 2,3-heptanediol or a mixture comprising 1,2-heptanediol and 2,3-heptanediol or at least one anti-redeposition boosting agent, such as alkanediols, glyceryl caprylate, 4-hydroxyacetophenone, ethyl hexyl glycerin or tropolone as anti-redeposition agent.

The present application relates to the field of cosmetic technology, in particular to a quick-drying and shaping spray and a preparation method thereof, in particular to a hair styling product which is quickly dried, permanently shaped and has hair care effect through the synergistic effect of specific film-forming agents and volatile systems, comprising the following components: ethanol 30-50%, aminomethyl propanol 0.1-1%, butanediol 1-5%, octyl acrylamide / acrylate / methyl acrylate copolymer 5-15%, PEG-12 dimethicone 0.5-2%, keratin 0.1-2%, hydrolyzed keratin 0.1-2%, oxidized keratin 0.1-2%, aloe barbadensis leaf extract 0.5-3%, selaginella kurata extract 0.5-3%, radix falatoniae extract 0.5-3%, radix salviae miltiorrhizae extract 0.5-3%, water 20-40%, essence 0.1-2%, cetrimonium chloride 0.1-1%, phenoxyethanol 0.5-1.5%, propylene glycol 1-5%, p-hydroxyacetophenone 0.5-1.5%, chlorphenesin 0.1-0.5%, ethylhexylglycerin 0.5-1.5%.

The invention discloses a portable gas taking device and method for a finished cable buffer layer. The device comprises a gas taking valve, a gas pump, a drying pipe and a gas taking bag. Wherein an air taking opening of the air taking valve is used for being connected with an air taking hole of a cable, an air outlet of the air taking valve is connected with an air inlet of the air pump, an air outlet of the air pump is connected with an air inlet of the drying pipe, and an air outlet of the drying pipe is connected with the air taking bag. The detection device has the characteristic of plug and play, can be directly installed in a buffer layer of a finished cable for detection, and is simple and convenient to operate. By adopting the gas sampling device disclosed by the invention, various volatile byproducts, including methane, water, cumyl alcohol, acetophenone and the like, in the cable can be detected at the same time, and the residual condition of the byproducts after degassing treatment can be accurately reflected.

The invention discloses a method for preparing a smoke dust filtering material by recycling waste aramid fiber fabric, and relates to the technical field of high polymer materials. When the smoke dust filtering material is prepared, waste aramid fiber fabric is cut, washed and dried, and then reacts with 3-chloropropyl isocyanate and dibutyl (allyl) phosphine in sequence to prepare modified aramid fiber; the preparation method comprises the following steps: enabling graphene oxide powder to react with 3-aminopropyltrimethoxysilane to prepare pre-modified graphene oxide, and then enabling the pre-modified graphene oxide to react with 3-aminopropyltrimethoxysilane and mercaptopropyltrimethoxysilane to prepare modified graphene oxide; the modified aramid fibers and the modified graphene oxide are mixed and then subjected to electrostatic spinning, and an aramid nanofiber membrane is prepared; and immersing the aramid nanofiber membrane into a 2, 2-dimethoxy-2-phenyl acetophenone solution, and carrying out ultraviolet radiation, so as to obtain the smoke dust filtering material. The smoke dust filtering material prepared by the invention has good filtering performance, flame retardant property, antibacterial property, mechanical property and heavy metal ion adsorption performance.

The invention discloses a preparation method of alpha-chloro-4-methylsulfonyl acetophenone. The preparation method comprises the following steps: step A, reacting a compound as shown in a formula I with trimethyl orthoformate and N-chlorosuccinimide in an organic solvent to obtain a compound as shown in a formula II; and B, reacting the compound shown in the formula II with a sulfuric acid aqueous solution in an organic solvent to obtain a compound shown in a formula III. The chlorination method provided by the invention has the advantages of high yield, no generation of dichloro impurity and high product purity, and can be used as a rofecoxib or imrecoxib intermediate; the method is simple to operate, mild and controllable in reaction condition, capable of being amplified to kilogram-level reaction and suitable for industrial production.

The invention discloses an environment-friendly p-hydroxyacetophenone production process, and particularly relates to the technical field of p-hydroxyacetophenone production, which comprises the following steps: step 1, respectively putting dissolved phenol and acetic anhydride into a synthesis reaction kettle, stirring and heating to 128 DEG C, refluxing for 5 hours at normal pressure, then carrying out heat preservation treatment, and reacting to generate phenyl acetate; 2, cooling phenyl acetate generated by the reaction to 60 DEG C, washing with water, standing for layering, and discharging phenyl acetate to generate a small amount of by-products containing 90% of glacial acetic acid; and 3, pumping the dehydrated phenyl acetate into a reaction kettle by a vacuum pump, gradually adding aluminum trichloride, then adding acidic water for hydrolysis, cooling to 60 DEG C, and discharging to obtain a liquid crude product of p-hydroxyacetophenone and o-hydroxyacetophenone. The environment-friendly performance of implementation is good, conditions needed by the technology are mild, the unstable condition is not prone to occurring in the operation process, and the practical application effect of the method is ideal.

The invention discloses a high-strength anti-crack concrete material and a preparation method thereof, and relates to the technical field of concrete. The prepared high-strength anti-crack concrete material is prepared from Portland cement, river sand, modified basalt fibers, modified polyacrylonitrile fibers, a defoaming agent, a water reducing agent and fly ash. The modified basalt fiber is obtained by reacting pretreated basalt fiber with 4-amino-2-tert-butylphenol and then reacting with 2-pyrazinyl ethanethiol, and the modified basalt fiber is obtained; the modified polyacrylonitrile fiber is obtained by reacting hydrolyzed polyacrylonitrile fiber with thiosemicarbazide, then reacting with 2, 4-difluorobromoacetophenone, then reacting with phosphorus oxychloride and N 'N-dimethylformamide, and then cross-linking with 5, 5'-diamino-2, 2 '-dipyridyl, and the modified polyacrylonitrile fiber is obtained by the following steps: reacting hydrolyzed polyacrylonitrile fiber with thiosemicarbazide, reacting with 2, 4-difluorobromoacetophenone, reacting with phosphorus oxychloride and N' N-dimethylformamide, and cross-linking with 5, 5 '-diamino-2, 2'-dipyridyl. The prepared high-strength anti-cracking concrete material has high strength, anti-aging performance and antibacterial performance.

The invention discloses preparation and application of a reductive amination catalyst. The preparation method of the catalyst comprises the following steps: step 1, preparing an SrTiO3 carrier; step 2, loading a nickel source into the prepared SrTiO3 carrier to form a nickel-loaded SrTiO3 catalyst precursor; and step 3, roasting the SrTiO3 catalyst precursor to obtain the SrTiO3 loaded nickel catalyst. Large-scale production of the non-noble metal catalyst is realized by adopting a co-precipitation method and an impregnation method which are simple in process and environment-friendly under the condition of room temperature, the obtained material can be used for reductive amination reaction of acetophenone under the condition of taking water as a solvent and shows excellent catalytic performance, and after 50 times of application, the acetophenone conversion rate is gt; the selectivity of alpha-phenylethylamine is gt; the selectivity of the alpha-phenethyl alcohol is 1t; and 2%.

The invention discloses a method for preparing an olefin-substituted aromatic boronic acid, and belongs to the technical field of pharmaceutical intermediates. Chloroacetophenone is used as a raw material, and chloro-1-phenylethanol is obtained by reduction with a reducing agent, and then a chlorostyrene solution is obtained by dehydration with an acid catalyst in a high boiling point solvent, and finally a chlorostyrene solution is reacted with a strong base reagent and a borate ester in a continuous flow, and acid hydrolysis is performed to obtain vinylbenzene boronic acid. The present invention adopts a high-temperature negative pressure dehydration method to prepare a key intermediate of chlorostyrene, with high conversion rate, few polymerization by-products, and rapid reaction; the boration reaction of chlorostyrene adopts a continuous flow method to improve reaction specificity, reduce reaction safety, and can efficiently and safely prepare high-quality vinylbenzene boronic acid.

The invention relates to a catalyst for preparing acetophenone by efficiently catalyzing selective oxidation of ethylbenzene in a hydrocarbon selective oxidation reaction, especially under a mild condition, a preparation method of the catalyst, and application of the catalyst provided by the invention. According to the catalyst for catalyzing selective oxidation of ethylbenzene to prepare acetophenone, monatomic Fe is anchored on a nitrogen-doped carbon carrier through a Fe-Nx coordination bond, the Fe content is 4-23 wt%, the BET specific surface area is 200-500 m / g, and Fe exists in Fe < + > and Fe < + > valence states. The catalyst can be used for preparing acetophenone through selective oxidation of hydrocarbons and has the advantages of being high in catalytic performance, stable in structure and good in substrate universality.

The invention discloses a self-crystallization type amino acid cleansing cream composition and a preparation method thereof. Comprising the following components in percentage by weight: 20%-40% of glycerol, 15%-25% of cocoyl glycinate, 1%-10% of cocoyl hydrolyzed collagen potassium, 0.1%-5% of sodium lauroamphoacetate, 0.1%-3% of citric acid, 0.1%-3% of sodium methyl cocoyl taurate, 0.1%-3% of sodium chloride, 0.1%-3% of sodium lauroyl glutamate, 0.1%-3% of ethyoxyl diethylene glycol, 0.1%-3% of propylene glycol laurate, 0.1%-3% of PEG-150 stearate, 0.1%-3% of ethylene glycol distearate, 0.0%-2% of 1, 3-propylene glycol distearate, 0.0%-2% of 1, 3-propylene glycol distearate and the balance of water. The cleaning agent is prepared from the following components in percentage by weight: 0.0 to 2 percent of 1, 2-hexanediol, 0.0 to 2 percent of p-hydroxyacetophenone and The self-crystallization type cleansing cream composition disclosed by the invention is high in crystallization point, good in thermal stability, mild and low in irritation, and has the effects of moisturizing and promoting cell proliferation, and the overall performance is improved.

The invention relates to skin care products, in particular to a preparation method and application of a natural, mild and non-irritant soothing composition. The invention relates to a natural mild non-irritant soothing composition, which is prepared from the following components in parts by weight: 10 to 50 parts of polyhydric alcohol, 0.025 to 2.5 parts of kava pepper root extract, 0.1 to 10 parts of swertia bimaculata extract, 0.1 to 10 parts of licochalcone A, 0.2 to 2 parts of 1, 2-hexanediol and 0.2 to 2 parts of p-hydroxyacetophenone. The invention proves that the soothing composition composed of the kava pepper root extract, the swertia extract and the licochalcone A can quickly and effectively solve the technical problems in the prior art, and the soothing effect of the soothing composition is verified from three common skin sensitivity problems of stabbing pain, pruritus and redness.