277 results about "Butanol" patented technology

The invention provides a hole transport layer precursor solution, a hole transport layer, a preparation method and application of the hole transport layer, and a perovskite cell, and belongs to the technical field of hole transport layers. The hole transport layer precursor solution comprises a self-assembled single molecule and an organic solvent; the organic solvent comprises a solvent A, a solvent B and a solvent C; the solvent A comprises more than one of a phosphate ester solvent and an alcohol ether solvent; the solvent A contains four hydrogen bond receptors; the boiling point of the solvent A is 215-290 DEG C; the solvent B comprises more than one of ethanol, isopropanol, normal propyl alcohol, butanol, ethylene glycol and N, N-dimethylformamide; the solvent C comprises more than one of ethyl acetate and normal hexane. A ternary hydrogen bond network is formed through the solvent A, the solvent B and the solvent C, the agglomeration degree of SAM molecules is remarkably reduced, and the device performance is improved.

This invention belongs to the field of lithium-ion battery technology, specifically relating to a method for constructing Si@COF-Co materials using porphyrin COF as a conductive nano-protective layer for nano-silicon and its application. The invention first adds a methanol solution of PEI to a methanol solution of nano-silicon, then dries it at high temperature to obtain PEI-modified nano-silicon Si-PEI. Next, Si-PEI and PVP are dispersed in o-dichlorobenzene / n-butanol, and then COF monomer and glacial acetic acid are added. After maintaining the mixture at 110-130℃ for 70-80 hours, it is washed, dried, and ground to obtain Si@COF. Finally, Si@COF and cobalt acetate tetrahydrate are dispersed in methanol, reacted at room temperature, and then washed, dried, and ground to obtain Si@COF-Co. This invention offers a simple, high-yield, and effective method. The synthesized material effectively alleviates the volume expansion of nano-silicon, improves the stability and reversibility of the electrode material, and can be used as a negative electrode material for lithium-ion batteries.

The invention relates to a process for extracting alcohols from an initial mixture (1) comprising alcohols in aqueous phase, with:a distillative separation by an isopropanol-butanol distillation column (III) equipped at the top with a condenser (c3), intended for separating said mixture into a water-isopropanol azeotrope stream (6) at the top and into a water-butanol azeotrope stream (7) at the bottom,a distillative separation intended for separating the water-butanol azeotrope stream into water and butanol, by a hetero-azeotropic distillation system comprising at least one water-recovering water column (IV) and at least one butanol (9)-recovering butanol column (V) equipped with a reboiler (r5),such that a heat transfer is performed from the top water-isopropanol azeotrope stream (6) entering the condenser of the isopropanol-butanol distillation column (III), to the stream entering the reboiler of the butanol column (V).

The invention relates to the technical field of waste gas treatment, and particularly discloses waste gas treatment liquid for treating large-air-volume low-concentration waste gas through a water-based method. The waste gas treatment liquid for treating the large-air-volume low-concentration waste gas through the water-based method comprises a surfactant, a defoaming agent, a dissolution accelerant and water. Wherein the surfactant can be selected from any one or more of polyoxyethylene alkyl ether, polyoxyethylene alkyl ether and polyoxyethylene fatty acid ester; the dissolution accelerant can be selected from any one or more of ethylene glycol monobutyl ether, diethylene glycol monobutyl ether and triethylene glycol monobutyl ether; the defoaming agent is any one or more of butanol, dimethyl silicone oil, silicone and polyether modified polysiloxane. When the waste gas absorption liquid obtained in the invention is used for treating waste gas, the absorption efficiency of methanol, butanol, benzene, toluene, xylene, ethyl acetate, dichloromethane and acetone is obviously improved, and the absorption efficiency of the waste gas absorption liquid on aromatic hydrocarbon, halogenated hydrocarbon, alcohol, ketone and ester pollutants is improved.

The invention discloses a preparation method of an astragalus extract with a uric acid reducing effect, and belongs to the technical field of biological medicines. The method comprises the following steps: concentrating an ethanol extract of radix astragali, extracting by using n-butyl alcohol, ethyl acetate and petroleum ether respectively, and concentrating an extract to obtain n-butyl alcohol, ethyl acetate and petroleum ether extraction parts and residual parts respectively, so as to obtain an n-butyl alcohol extract, namely the radix astragali extract for reducing uric acid. Efficacy experiments show that the normal butanol extraction part of the ethanol extract of the astragalus membranaceus can obviously reduce the serum uric acid level (SUA) of a mouse with hyperuricemia, inhibit the activity of xanthine oxidase (XOD) and effectively improve kidney injury caused by the hyperuricemia. The uric acid reducing effect of the radix astragali n-butyl alcohol extract is close to that of a clinical drug allopurinol, and the radix astragali n-butyl alcohol extract has wide development and application prospects in the aspect of relieving hyperuricemia.

The invention relates to the technical field of comprehensive treatment of agricultural pests, and particularly provides a bactrocera cucurbitae double-trapping type attractant based on optimal matching of host and intestinal bacteria volatile matters and application of the bactrocera cucurbitae double-trapping type attractant. The attractant comprises an active component and a synergistic component, the active component is derived from balsam pear and towel gourd volatile matters and bactrocera cucurbitae intestinal bacterial metabolites, and comprises 2-methyl ethyl valerate, propyl hexanoate, ethyl hexadienoate, heptanal, benzyl alcohol, 3-methyl acetic acid-1-butanol, indole and 1-undecanol; and the synergistic component is myzobenzoic ketone. Active components are quickly released in the early stage of application, so that the attraction efficiency is remarkably improved; the synergistic component prolongs the trapping lasting period through the slow release effect, and the long-term trapping effect is ensured. All the components of the attractant provided by the invention are biological sources or environment-friendly chemical substances, the attractant meets the requirement of green prevention and control, can efficiently attract male and female adults at the same time, makes up the limitation that a traditional sex attractant only induces male adults or a food attractant only induces female adults, and is beneficial to more comprehensive control of population quantity.

This invention discloses a catalyst for the alkylation of tert-butanol with styrene to prepare tert-butylethylbenzene and ethylbenzene, its preparation method, and its application. The catalyst consists of a support and active components loaded on the support. The active components are oxides of rare earth metals and high-valence oxides of transition metals. The support is H-β zeolite. The mass contents of the oxides of rare earth metals and high-valence oxides of transition metals on the support are 3-5% and 2-4%, respectively. This invention makes a breakthrough in the reaction mechanism by loading rare earth metals and transition metals onto a β-molecular sieve and using tert-butanol and styrene as raw materials for alkylation. This avoids the polymerization of styrene (raw material) and the dimerization of isobutylene (intermediate product), reduces the generation of by-products, and makes the catalytic process controllable.

The invention discloses a preparation method of 3-quinuclidinone hydrochloride, which comprises the following steps: carrying out temperature control reaction on 4-picolinic acid and chloroacetic acid under alkaline water conditions to obtain an aqueous solution of a compound a, and directly entering the next reaction without post-treatment after the reaction is finished; adding a reducing agent alkaline water system into the aqueous solution of the compound a, controlling the temperature to react, controlling the temperature to adjust the pH value to 5-5.5 after the reaction is finished, extracting with n-butyl alcohol, and drying to obtain an n-butyl alcohol solution of a compound b, and directly entering the next reaction step; wherein the reducing agent is one of sodium borohydride and potassium borohydride; dropwise adding thionyl chloride into an n-butyl alcohol solution of the compound b, controlling the temperature to react after dropwise adding is ended, and concentrating to remove the solvent and unreacted thionyl chloride after the reaction is ended, so as to obtain a compound c; carrying out Dieckmann condensation reaction on the compound c at controlled temperature under the condition of organic alkali by using toluene as a solvent, carrying out hydrochloric acid quenching reaction after the reaction is finished, and directly carrying out next-step reaction after extracting and removing impurities from a water phase containing a hydrochloride solution of a compound d by using toluene; and carrying out a decarboxylation reaction on the compound d in a hydrochloric acid aqueous solution at controlled temperature, after the reaction is finished, adjusting the pH value to 10-13, extracting, and salifying to obtain a target compound TM, namely 3-quinuclidinone hydrochloride. The preparation method of 3-quinuclidinone hydrochloride provided by the invention has the advantages of economical and easily available raw materials, mild reaction conditions, efficient reaction, simple operation and low cost, and is suitable for industrial application.

The present invention relates to the production of butyl acrylate by direct esterification of acrylic acid with butanol, this reaction being catalyzed by sulfuric acid. More specifically, it relates to an improved process for producing butyl acrylate, enabling high-purity butyl acrylate to be obtained, by upgrading both the Michael adducts formed during this process, by thermal and catalytic cracking, in the form of reactants and ester which can be recycled in the process, and the final residue, by hydrothermal gasification in the form of methane and mineral salts.

The invention belongs to the technical field of medicine synthesis processes, and particularly relates to a preparation method of high-yield and high-purity tandospirone citrate. According to the method, pyrimido piperazine quaternary ammonium salt and isoindoledione are used as raw materials, a toluene and n-butanol and / or n-amyl alcohol mixed solvent is used as a solvent, tandospirone can be generated under the alkaline condition without adding a phase transfer catalyst, after acid adjustment extraction and specific organic solvent reverse phase impurity removal, a water phase is adjusted to be alkaline, and the tandospirone is obtained. And extracting with toluene, and adding a citric acid ethanol solution to directly separate out a citric acid tandospirone solid. The preparation process disclosed by the invention has a very good impurity removal effect, and the obtained tandospirone citrate is high in purity, high in process yield, good in atom economy and low in output of three wastes.

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.

The present application relates to the technical field of IPDI synthesis, and particularly discloses a method for removing residual n-butanol in tail gas in a process for synthesizing isophorone diaminon-butyl carbamate by using a urea method, wherein the tail gas is obtained from: ammonia-containing tail gas obtained in the process for synthesizing isophorone diaminon-butyl carbamate by using the urea method, and tail gas obtained after an ammonium carbamate removal process; and the method for removing the residual n-butanol in the tail gas comprises the following steps: cooling the tail gas to 15-25 DEG C, and then adsorbing the n-butanol in the tail gas by using an adsorbent; and the adsorbent comprises molecular sieves, activated carbon and nano-polymer adsorption resin. By using the method, the content of n-butanol in the tail gas of isophorone diaminon-butyl carbamate is far lower than the industrial emission standard, no secondary pollution is caused, and the system safety is high.

The invention discloses a blue copper peptide composition for repairing scars and a preparation method of the blue copper peptide composition, and belongs to the technical field of preparation of biological medicine preparations. The composition is prepared from freeze-dried powder of copper blue peptide, polyquaternium-73, asiaticoside, nicotinamide, polydimethylsiloxane, betaine-propylene glycol ionic liquid and a gel matrix. According to the invention, the blue copper peptide is coated in a permeation enhancing system constructed by the betaine-propylene glycol ionic liquid and the HEPES, so that the enzymolysis loss of the blue copper peptide is reduced, and the biological activity of the blue copper peptide is maintained; a temperature-sensitive gel matrix is constructed by carboxyl esterified modified sodium alginate and poloxamer, the carboxyl esterified modified sodium alginate is prepared by grafting n-butyl alcohol to a hydrophilic main chain of sodium alginate through a Fischer esterification method, the gel matrix is in a liquid state at normal temperature, after the gel matrix is smeared on a scar part, the gel matrix is converted into semi-solid gel under the influence of body temperature, and slow and continuous release of blue copper peptide can be achieved. The traditional Chinese medicine composition has the effect of repairing scars and is suitable for chronic scars needing long-term nursing.

The invention relates to a green preparation method of rumex hanus polysaccharide with efficient free radical scavenging activity, and belongs to the technical field of plant products, the rumex hanus dry powder is used as a raw material, a water extraction and alcohol precipitation method is adopted for extraction, and the specific steps are as follows: weighing the rumex hanus dry powder, dissolving the rumex hanus dry powder in pure water, heating and stirring, collecting supernate, repeatedly extracting, merging the supernate, and obtaining the rumex hanus polysaccharide with efficient free radical scavenging activity. Obtaining an azolla filliculoidas polysaccharide extracting solution A; carrying out rotary evaporation concentration on the azolla filliculoidas polysaccharide extracting solution A, adjusting the pH value, carrying out acid precipitation and centrifuging to remove precipitate to obtain azolla filliculoidas polysaccharide extracting solution B, adding a mixed solution prepared from chloroform and n-butyl alcohol into the azolla filliculoidas polysaccharide extracting solution B, stirring to enable an organic reagent to fully react with the solution, centrifuging to collect supernatant, and repeatedly operating until no white is separated out to obtain azolla filliculoidas polysaccharide extracting solution C; dialyzing the rumex hanus polysaccharide extracting solution C to remove the organic reagent, adding absolute ethyl alcohol for alcohol precipitation, centrifuging, discarding supernate, and drying to volatilize dry ethyl alcohol to obtain rumex hanus polysaccharide; the obtained rumex hanus polysaccharide has efficient free radical scavenging activity.

The application discloses a method for preparing 3-methoxy-3-methyl-1-butyl acetate, and belongs to the technical field of organic compound synthesis. The method comprises the following steps: taking 3-methoxy-3-methyl-1-butanol as raw material, and respectively adopting acetic acid, acetic anhydride and acetyl chloride as acetylation reagents, and adding a catalyst or an acid-binding agent to perform acetylation reaction, so as to obtain 3-methoxy-3-methyl-1-butyl acetate. The application provides a synthesis method for 3-methoxy-3-methyl-1-butyl acetate, takes 3-methoxy-3-methyl-1-butanol as raw material, respectively adopts acetic acid, acetic anhydride and acetyl chloride as acetylation reagents, adds a catalyst or an acid-binding agent to perform acetylation reaction, and obtains 3-methoxy-3-methyl-1-butyl acetate. In view of the defect that there is no acetylation synthesis process suitable for the target product in the prior art, the related technical blank is filled.

The application discloses a ginseng polysaccharide, a preparation method and application, and the ginseng polysaccharide is ginseng polysaccharide GP60, which is composed of glucose, galactose and arabinose, and the molar ratio of each monosaccharide is glucose: galactose: arabinose = 77.1: 16.8: 6.1; a new preparation method is adopted; after soaking and twice decocting, different proportions of 95% ethanol are added into the filtrate in batches; the obtained precipitate is added with water to prepare a solution with a relative density of 1.1 g / ml; a certain amount of the solution is taken, a certain proportion of chloroform and n-butanol is added, and a polysaccharide aqueous solution is prepared; the polysaccharide aqueous solution is added with 95% ethanol until the alcohol content reaches 60%; the solution is statically placed for 12 hours; centrifugal separation is carried out; the precipitate is collected; the collected precipitate is sequentially washed with 95% ethanol, anhydrous ethanol, isopropyl alcohol and ether; the solvent is volatilized; and the ginseng polysaccharide GP60 is obtained. The ginseng polysaccharide GP60 is non-toxic, has the effect of preventing light aging, and can be widely applied in the fields of food or health food, anti-light aging skin care products, washing and caring products and anti-light aging medicines.

This application relates to a highly water-mark-resistant cathodic electrophoretic emulsion and its preparation method, belonging to the field of electrophoretic coating technology. The preparation method of the highly water-mark-resistant cathodic electrophoretic emulsion includes the following steps: S1. Blocking some isocyanate groups of toluene diisocyanate with a mixture of n-butanol and PEG400, and then reacting and bonding the unblocked isocyanate groups with oleamide resin and polyamine to obtain a polyamine-modified isocyanate curing agent; S2. Performing a ring-opening amination reaction between epoxy resin and a first amine compound, and then adding a second amine compound to continue the reaction to obtain an amine-modified epoxy resin; S3. Grafting the polyamine-modified isocyanate curing agent onto the amine-modified epoxy resin to obtain a cationic epoxy resin; S4. Neutralizing the cationic epoxy resin with an organic acid, adding deionized water for emulsification and dispersion to obtain the highly water-mark-resistant cathodic electrophoretic emulsion. After electrophoretic film formation, the emulsion exhibits good hydrophilicity on the wet film surface, thereby significantly reducing the formation of watermarks during rapid baking.

This invention belongs to the field of diesel additive technology, and particularly relates to a diesel cetane number improver and its preparation process, comprising the following steps: mixing isooctyl nitrate, n-hexadecane, n-eicosane, oleic acid, and 2,6-di-tert-butyl-p-cresol to obtain a premix; mixing anhydrous ethanol, glycerol, and an emulsifier, adding the premix, reacting, and drying to obtain microparticles; mixing ethyl acetate, isopropanol, n-butanol, and an emulsifier, adding hexadecyl alcohol and EVA-210 to dissolve, to obtain a film-forming solution; mixing ethyl acetate and isopropanol, adding the microparticles and the film-forming solution, removing ethyl acetate, isopropanol, and n-butanol, adding the solution to liquid paraffin and mixing to obtain the diesel cetane number improver. The diesel cetane number improver prepared by this invention can prevent isooctyl nitrate from directly contacting the external environment, slow down the generation rate of free radicals, effectively improve and stabilize the cetane number of diesel, and maintain the cetane number of diesel at a high level for a longer period of time.

The invention belongs to the field of fuel additive preparation, and relates to a preparation method of an alcohol-based oxygen-containing fuel additive. In order to solve the problems that an existing carbonic ester additive is relatively low in boiling point and is not matched with a diesel distillation range, the invention develops a special catalyst and a preparation process for preparing an alcohol-based oxygen-containing fuel additive, the catalyst takes a hierarchical pore molecular sieve as a carrier, and a potassium alcoholate active component and an amphiphilic molecule linking agent are introduced. Then catalyzing the ester exchange reaction of dimethyl carbonate and butanol by using the catalyst to generate a mixture of methyl butyl carbonate, dibutyl carbonate and the like, and fractionating to obtain the alcohol-based oxygen-containing fuel additive which has a proper boiling point and can be used for remarkably improving the oxygen content of the fuel.

The invention relates to the technical field of aromatherapy, and particularly discloses concentrated aromatherapy liquid capable of regulating emotion, fire-free aromatherapy and a preparation method of the fire-free aromatherapy. The perfume is prepared from the following raw materials in parts by weight: a fruit fragrance perfume, a green fragrance perfume, a flower fragrance perfume, a citrus fragrance perfume, a spicy fragrance perfume, a fixative, a flower and fruit composition and a solvent, the invention relates to a fire-free aromatherapy product, which is characterized by comprising a concentrated aromatherapy liquid, 3-methoxy-3-methyl-1-butanol, dipropylene glycol monomethyl ether and an antioxidant, the preparation method comprises the following steps: uniformly mixing and stirring the concentrated aromatherapy liquid, the 3-methoxy-3-methyl-1-butanol, the dipropylene glycol monomethyl ether and the antioxidant to obtain a mixed solution, and putting 3-4 fiber core rattans into a container of the mixed solution to obtain a finished product. And the prepared fireless aromatherapy has the advantages of being high in aroma diffusion speed and uniform in aroma diffusion.

The application provides a method for preparing butyl hafnate from hafnium tetrachloride. The method comprises the following steps: (1) adding n-butanol and an organic solvent into a reaction kettle under the protection of inert gas, and then adding hafnium tetrachloride to obtain an initial reaction system; (2) adding a hafnium-based organometallic framework catalyst into the initial reaction system, heating to 40-65 DEG C, controlling the reaction pressure to be 0.1-0.3 MPa, and stirring for 3-8 h to obtain an esterification reaction liquid; (3) cooling the esterification reaction liquid to 20-30 DEG C, separating the solid components in the system by pressure filtration to obtain a filtrate; and (4) sequentially performing normal pressure distillation, vacuum rectification and precision filtration on the filtrate to obtain butyl hafnate. By using the hafnium-based catalyst, the reaction efficiency and product purity of butyl hafnate prepared from hafnium tetrachloride are improved, and the side reaction and equipment corrosion are effectively inhibited. The method has mild process conditions and is suitable for industrial large-scale production of butyl hafnate.

The invention discloses a method for improving the continuous fermentation efficiency of clostridium aerovorans. According to the method, a continuous fermentation system in which a first fermentation tank and a second fermentation tank are connected in series is adopted, clostridium aerovorans is used as a production strain, and synthesis gas is used as a raw material. The method is characterized in that after thalli in a first fermentation tank enter a stable phase, a continuous process is started, the dilution degree is optimized to be 0.15-0.7, the nutrient concentration of a supplemented fresh culture medium is adjusted to be 0.65-1 time of the standard concentration, and growth and metabolism of the thalli are cooperatively regulated. According to the invention, the thallus delay period of the second fermentation tank is effectively shortened, decayed thalli are replaced, the overall flora activity is enhanced, the continuous fermentation period is obviously prolonged to more than 200 hours, the yields of ethanol and butanol are greatly improved, meanwhile, foaming in the fermentation process is effectively inhibited, and the system is simple in structure, convenient to operate and suitable for industrial application.

The invention provides a low-cost combined recovery device for BDO byproduct butanol, and relates to the technical field of butanol recovery, the low-cost combined recovery device comprises a reaction tower arranged on a horizontal plane, the reaction tower is fixedly connected with a feeding pipe, the interior of the feeding pipe is fixedly connected with a filter screen, one side of the filter screen is slidably connected with a strip-shaped scraper plate, and the strip-shaped scraper plate is fixedly connected with the feeding pipe. And the strip-shaped scraping plate is used for cleaning the surface of the filter screen, a pushing air cylinder is fixedly connected to the side wall of the feeding pipe, and an output shaft of the pushing air cylinder is fixedly connected with the strip-shaped scraping plate. The problems of equipment blockage, abrasion, reduced mass transfer efficiency and the like caused by particulate matters in the traditional recovery process can be effectively solved, and continuous and stable operation of the BDO byproduct butanol recovery device is guaranteed.

The presently claimed invention relates to an alkaline composition for cleaning a substrate comprising i) copper or copper alloy and ii) cobalt or cobalt alloy, the composition comprising: a) at least one pH adjustor selected from diglycolamine, 4,4-diethoxy-N,N-dimethyl-1-butanamine, 3-dimethylaminopropan-1-ol, dimethylaminoethoxyethanol, N,N-dimethylisopropanolamine, ethylethanolamine, N-methyldiethanolamine, 2-(2-(methylamino)ethoxy)ethanol, 3-(methylamino)propane-1,2-diol, 2-[2-[2-(2-methoxy- ethoxy)ethoxy]ethoxy]ethylamine, 2-[2-(2-aminoethoxy)-ethoxy]-ethanol, N-butyldiethanolamine, diisopropanolamine, N-methyldiisopropanolamine, monoethanolamine, 3-dimethylamino-1,2-propandiol, 2- amino-1-butanol, 2-(2-(2-(2-aminoethoxy)ethoxy)ethoxy)ethanol, prolinol, 1-methyl-2-pyrrolidinemethanol, 1-methyl-2-pyrrolidinemethanol, 1-methyl-3-pyrrolidinol, 2-amino-2-methyl-1-propanol, N,N-dimethylethanolamine, butylethanolamine, diethylethanolamine, 3-methoxypropylamine, 4-(2-hydroxyethyl)morpholine, 4-(dimethylamino)cyclohexanol, 2-amino-2-methyl-1, 3-propanediol, or diisopropylamine; b) at least one complexing agent selected from C2 to C12 hydrocarbon having at least two sulfonic acid or carboxylic acid groups; c) at least one polymeric dispersing agent having a weight average molecular weight ≥ 1000 g / mol; and d) a solvent comprising water.

The invention belongs to the technical field of biomass materials and green chemical engineering, and discloses a green preparation method and system of a high-porosity cellulose porous membrane based on solvent replacement. The invention aims to solve the problems that the pore structure is easy to dry and collapse, the solvent cost is high and the environment is not protected when the cellulose porous membrane is prepared in the prior art. The core of the method is that cellulose is dissolved in a lithium bromide aqueous solution, and a cellulose hydrogel network is formed through cooling solidification and washing regeneration; then, completely replacing the hydrogel by using a low-surface-tension alcohol or ketone solvent (such as tertiary butanol) so as to eliminate destructive capillary force in the drying process and maintain a porous structure; and finally, drying at normal pressure to obtain the high-porosity cellulose membrane. The core of the system is that a three-loop recycling system of lithium bromide and alcohol or ketone solvents is integrally designed, and near-zero emission and cyclic utilization of the solvents are achieved. The prepared cellulose porous membrane is high in porosity (50-80%) and controllable in structure, and the whole process is green, economical and suitable for large-scale production.

The invention provides an oxygen barrier layer, a preparation method of the oxygen barrier layer and a flexible resin plate with textured flat-top lattice points on the surface, polymer particles are formed by in-situ polymerization of polyurethane resin containing free isocyanate monomers and oxygen barrier resin containing hydroxyl in an organic solvent, and solid filler does not need to be additionally added; the molar content of hydroxyl in the oxygen inhibitor resin is greater than the molar content of isocyanate in the isocyanate monomer, so that the oxygen inhibitor is excessive, and the oxygen inhibitor resin, the polyurethane resin and the flatting agent which do not participate in the reaction jointly participate in film formation. Raw materials of the oxygen barrier layer can be dissolved in a mainstream commercially available flexographic flushing medium, such as an organic solvent containing tetrachloroethylene / n-butyl alcohol or a high-end environment-friendly developing solution containing terpene or commercially available Shanghai sensitive morning, and a photopolymerization reaction does not occur. After exposure, laser ablation and plate washing by a flexible plate washing medium, the flexible resin plate with the flat-top lattice points with the sand meshes on the surface is prepared, and the oxygen barrier layer is completely removed without residues in the plate washing process.

The invention discloses a preparation method of a high-temperature durable epoxy resin coating, and relates to the technical field of epoxy resin coatings. The novel epoxy resin is prepared from 1, 3, 5-tris (2-propynyloxy) benzene, 3-azido butanol and glycidyl methacrylate as raw materials, the novel epoxy resin has multiple functional groups, the crosslinking degree of the coating can be improved, the epoxy resin coating can have high thermal stability due to introduction of a benzene ring and a triazole structure, and the epoxy resin coating can be applied to the field of coating materials. The heat resistance of the coating is improved; secondly, grafting 2-benzoyl-4, 5-dichlorobenzoic acid onto calcium silicate, and then hydrolyzing to prepare a novel hindered phenol antioxidant; calcium silicate is used for loading the antioxidant, a stable loading platform can be provided for the antioxidant, and active groups on the surface and the antioxidant generate a synergistic effect, so that the oxidation resistance is further improved, the anti-aging performance of the coating is improved, and the service life of the coating is prolonged. The high-temperature durable epoxy resin coating prepared by the invention has the effects of high temperature resistance and durability.

The present technology relates generally to compositions including 3-amino-3-methyl-2- butanol. In particular, the present technology relates to compositions for personal care applications that include 3 -amino-3-methyl-2 -butanol, such as hair styling aerosols, body lotions, mascara, hair colorants, sunscreens, hand sanitizers, cleansers, eye creams, exfoliants, shampoos, conditioners, hair masks, hair styling gels, hair styling mousse, dry shampoos, non-aerosol hair styling sprays, body washes, soaps, body scrubs, body butters, lipsticks, foundations, eye shadows, concealers, blushes, eyeliners, brow gels, lip glosses, lip balms, setting sprays, and / or shaving creams.

The present invention relates to a method for manufacturing a hydrophobic silica aerogel, and silica aerogel beads and silica aerogel powder manufactured using the same, and more particularly, to a method for manufacturing a silica aerogel, the method comprises: a step of preparing a mixture by mixing silica hydrogel beads into a reaction solution comprising an alcoholic solution containing propanol and butanol, a silylating agent, and a surfactant; a step of pretreating the mixture at a temperature of 50 to 70 DEG C for 10 to 60 minutes; a step of heating for 30 to 100 minutes at a temperature from the boiling point of the alcoholic solution to 20 DEG C higher than the boiling point after the pretreatment step; and a step of drying at a temperature of 100 to 120 DEG C under atmospheric pressure, and to silica aerogel beads having a density (apparent specific gravity) of 0.08 g / m3 or more and less than 0.15 g / m3 manufactured according to this method, and a silica aerogel powder having a density of 0.01 to 0.1 g / m3 and a specific surface area of 500 to 800 m2 / g.

The application provides a catalyst and a preparation method and application thereof, and the preparation method comprises the following steps: first, a pore size adjustment treatment is performed on a spherical full-silicon molecular sieve carrier to obtain carriers with different pore size distributions; then, a CVD reaction is performed by using N2 to carry steam of molten Ni salt, Cr salt and Fe salt into a quartz tube filled with the dried carriers; then, the molecular sieve spheres after the reaction are calcined in N2 to obtain Ni-Cr-FeO x @Si-molecular sieve; and then, H2 or CO is used for reduction to obtain a Ni-Cr-Fe@Si-molecular sieve catalyst. The catalysts with different pore sizes are mixed in a specific proportion and then applied to a BYD fixed-bed hydrogenation process for preparing BDO, and the hydrogenation activity and product selectivity are high, the selectivity for BDO can reach > 99%, the amount of butanol generated is < 0.9%, and the amount of TBA generated is < 0.1%.