1046 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 provides a hydrogel composition. The hydrogel composition is prepared from the following components in percentage by weight: 0.5 to 15 percent of an adhesion component, 0.5 to 10 percent of a moisturizing component, 0.01 to 5 percent of a bioactive component, 0.01 to 5 percent of a physical crosslinking agent, 0.01 to 2 percent of a flavoring component, 0.01 to 2 percent of an antimicrobial component and the balance of medical purified water, wherein the bioactive component comprises at least one of lipoic acid, tea polyphenol, lactic acid bacteria extract and metabiotics; the antimicrobial component comprises at least one of copper ions, benzyl alcohol, p-hydroxyacetophenone, sodium methyl hydroxybenzoate and sodium ethyl hydroxybenzoate. According to the hydrogel composition disclosed by the invention, the low-concentration antimicrobial component is introduced, so that the antimicrobial component has more stable and effective bactericidal activity and can be more stably adhered to a wound, and the hydrogel composition can have better antibacterial performance and a function of promoting wound healing without additionally adding antibiotics.

The invention discloses a children sunscreen mousse composition and a preparation method thereof.The children sunscreen mousse composition comprises agent materials and a propellant, the agent materials comprise an A-phase substance, a B-phase substance, a C-phase substance, a D-phase substance and an E-phase substance, the A-phase substance comprises a first solvent, a chelating agent, a thickening agent, p-hydroxyacetophenone and a humectant, and the thickening agent comprises xanthan gum; the B-phase substance comprises grease, a first sun-screening agent, a sun-screening synergist, an emulsifier, an antioxidant and a film-forming agent; the emulsifying agent is prepared from potassium cetyl phosphate and polyglycerol-10 laurate; the C-phase substance comprises a second solvent and a second sun-screening agent, and the second sun-screening agent comprises at least one of p-xylylene dichorsulfonic acid and methylene bis-benzotriazolyl tetramethyl butyl phenol; the D-phase substance comprises a preservative, a skin protecting agent and a filling agent; and the E-phase substance comprises a pH regulator and a third solvent. The sunscreen mousse composition for children has better mildness, sunscreen effect and stability, and also can provide a soft and dense mousse texture.

Provided are silicone elastomer particles having a crosslinked structure which is active with respect to biodegradability, and can provide texture and feel during use that is equal to or higher than conventional silicone elastomer particles when blended in a cosmetic composition or the like, a reactive group-containing polycaprolactone compound having a specific structure and useful as a raw material for synthesis reactions, and a method for producing the same. A polycaprolactone compound containing a reactive group having two or more modified polycaprolactone structures has the structural formula (1) as described herein, where in the formula, n is a number in the range 1 to 5 and Ra is a specific (meth)acryl terminal group or alkenyl terminal group, specifically, a compound selected from the aforementioned (meth)acryl-modified polycaprolactone compounds and alkenyl-modified polycaprolactone compounds.

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 incombustible water-based aerosol spray paint and a preparation method thereof, and relates to the technical field of spray paint. When the non-combustible water-based aerosol spray paint is prepared, firstly, p-(triethoxysilyl) acetophenone reacts with trimethylchlorosilane, and then the reaction product and tetramethyl tetravinyl cyclotetrasiloxane are subjected to ring opening polymerization to obtain modified polysiloxane; grafting epoxy resin with 4-vinyl-methyl benzoate, reacting with modified polysiloxane to obtain modified epoxy resin, and emulsifying to obtain a modified epoxy resin emulsion; secondly, reacting the silicon dioxide subjected to acylating chlorination with 4-hydroxy-2, 2, 6, 6-tetramethylpiperidine nitroxide free radicals, reacting with 3-(3-thienyl) propionaldehyde, and reacting with thiophene and 3-vinyl thiophene to obtain modified silicon dioxide; and finally, mixing the modified epoxy resin emulsion, pure water, the modified silicon dioxide, a curing agent and a photoinitiator to prepare the incombustible water-based aerosol spray paint.

The invention belongs to the field of personal care, and particularly relates to a glycoside derivative flexible liposome and a preparation method and application thereof, the glycoside derivative flexible liposome comprises a main shell material, a humectant, a wrapped raw material, an auxiliary shell material, a preservative and a solvent; the main shell material is phosphatidylcholine, and the auxiliary shell material is polyquaternium-51; the preservative is any one or more of 1, 2-hexanediol, p-hydroxyacetophenone, methylparaben, phenoxyethanol and caprylyl glycol; the moisturizing agent is butanediol; the wrapped raw material is hydroxypropyl tetrahydrofurantriol; the solvent is deionized water. According to the invention, the permeability and penetration depth of the glassine and the concentration of the glassine at a target position are improved by utilizing a flexible liposome wrapping technology, the bioavailability of the glassine is improved, and the addition amount is reduced under the condition of realizing the same tightening and anti-wrinkle effects, so that the cost is reduced.

The invention discloses a preparation method and application of an artemisia apiacea fermentation extracting solution. The artemisia annua fermentation extracting solution is prepared from artemisia annua, ultrapure water, probiotics and the like. The preparation method comprises the following steps: picking fresh artemisia annua, cleaning, drying and sterilizing; crushing, sieving, and selecting artemisia annua particles with proper particle sizes; adding the selected artemisia annua particles, ultrapure water and probiotics into a temperature-controlled closed stirring reaction device, and carrying out strict anaerobic fermentation; separating a liquid phase part and a solid phase part from the obtained fermentation product through five filtering processes, performing microfiltration on the liquid phase part to remove thalli, and adding 1, 2-hexanediol and p-hydroxyacetophenone to obtain the artemisia apiacea fermentation extracting solution. The extracting solution prepared by fermenting natural plant raw materials and probiotics is high in molecular weight uniformity and high in physiological activity, retains the functional effect of sweet wormwood, is safe, low in sensitivity and low in irritation, and is suitable for being added into various daily chemical products.

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 tightening and repairing gynecological gel. Preparation raw materials comprise carbomer, sodium hyaluronate, an animal umbilical cord extract, madecassoside, carnosine, a polygonum cuspidatum root extract, a scutellaria baicalensis root extract, a tea leaf extract, a chamomile flower extract, elastic collagen, arginine, pentanediol, butanediol, glycerin, p-hydroxyacetophenone, capryloyl hydroximic acid and purified water. The gynecological gel can maintain balanced strains, so that the microenvironment of the vagina is kept normal; vaginal atrophy is improved, the tight state of the vagina is recovered, and vaginal dryness is relieved; damaged mucosa can be repaired, the natural defense function of women is enhanced, and gynecological infection is prevented. The gynecological gel has good biocompatibility, cell affinity and mechanical properties, and can supplement collagen to female private parts, repair damaged vaginal mucosa and promote wound healing; the vagina can be moisturized and moistened, the looseness and dryness of the vagina are improved, the micro-ecological balance of the vagina is adjusted, and the immunity of a female reproductive system is improved.

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 invention discloses a high-conversion-rate transaminase mutant, a coding gene and application of the high-conversion-rate transaminase mutant, and belongs to the technical field of bioengineering. The transaminase mutant is obtained by amino acid mutation of a transaminase mutant M1 as shown in an amino acid sequence SEQ ID NO.3, and the mutation site is at least one of the 33rd site, the 88th site, the 90th site, the 157th site, the 177th site, the 391th site, the 392nd site and the 442nd site. Compared with the transaminase mutant M1, the transaminase mutant provided by the invention has higher enzyme activity, and can be used for preparing the transaminase mutant. According to the method, the (S)-1-(3-methoxyphenyl) ethylamine can be prepared by taking the 3-methoxyacetophenone as the substrate, the yield of the product is high, when the concentration of the substrate is increased, the conversion rate is still high, no by-product is generated, and the method has a very good industrial application prospect.

The invention provides a synthesis method of 4-fluoro-2-trifluoromethyl acetophenone, which comprises the following steps: under protective gas, firstly adding a metal palladium catalyst, a ligand, alkali, an organic solvent, 2-bromo-4-fluorine-trifluorotoluene and methylboronic acid into a reactor, then introducing carbon monoxide gas into the reactor, raising the pressure of the reactor, and reacting for 2-4 hours at the temperature of between 20 and 30 DEG C; and heating and stirring until the reaction is complete, and carrying out post-treatment to obtain the product 4-fluoro-2-trifluoromethyl acetophenone. According to the method, the 4-fluoro-2-trifluoromethyl acetophenone is synthesized through the one-pot reaction of the 2-bromo-4-fluoro-trifluorotoluene and the methylboronic acid under the catalysis of the metal palladium catalyst, the reaction method is easy and convenient to operate, the target product can be efficiently synthesized only through one-step reaction, no waste water is generated in treatment after the reaction, and the method is green and environmentally friendly.

The invention discloses a scalp care solution containing a probiotic fermentation product and a preparation method thereof, which comprises the following raw materials by weight: 87-91 parts of water, 3-5 parts of glycerol, 4-9.3 parts of probiotic fermentation products, 1.3-2.6 parts of plant extracts, 0.4-0.8 parts of 1,2-hexanediol, 0.4-0.8 parts of p-hydroxyacetophenone, 0.1-0.3 parts of carbomer, 0.1-0.2 parts of arginine, 0.1-0.15 parts of trace components, and 7-11 parts of composite nano-carrier liquid. The scalp care solution provides nutrition for scalp probiotics by adding prebiotic fermentation products, such as lactobacillus fermentation products, bifid yeast fermentation product filtrate, altermonas fermentation product extract, and bifid yeast fermentation product lysate, which is beneficial to promoting the growth of scalp probiotics and enhancing the scalp barrier, thereby achieving scalp health.

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 invention relates to the technical field of daily chemicals, in particular to a composition containing lucid ganoderma and application of the composition. The composition is prepared from honey, glycerol, p-hydroxyacetophenone, 1, 2-hexanediol, caprylyl glycol, an angelica sinensis extract and a ganoderma sinensis extract. The composition provided by the invention contains a plurality of plant components, so that the skin state with oil outside and dry inside can be synergistically improved in a multi-effect manner; the composition can balance the homeostasis, improve fine wrinkles, enhance skin elasticity and reproduce full skin, has the effects of tightening, resisting wrinkles, moisturizing and the like, and can improve wrinkles, improve pachulosis and make the skin tight and tender.