54results about How to "Has industrial production value" patented technology

The invention discloses a method for preparing optically-pure citronellol from neral or geranial. According to the method, an optically-pure transition metal catalyst is used, and neral or geranial is subjected to selective asymmetric hydrogenation for obtaining the optically-pure citronellol, the chemical selectivity reaches 98%-99.9%, and the stereoselectivity reaches 96%-99%, and the defects that raw materials are limited, the synthesis route is long, cost is high and the like in the process for synthesizing optically-pure citronellol in the prior art are solved.

The invention discloses a preparation method for a super-macroporous silicate molecular sieve material. The molecular sieve material is obtained by utilizing a low-cost template agent and adopting a hydrothermal synthesis method. The prepared super-macroporous silicate molecular sieve has a UTD-1 structure, 14-ring pore channels in the direction of a crystal axis c and good thermal stability, canbe doped with heteroatoms, and has potential application value in the fields of petrochemistry, fine chemical engineering, life sciences and the like.

The invention discloses a preparation method, a product and application of a ferroferric oxide / nitrogen doped graphene composite material. The preparation method includes: preparing nitrogen doped graphene oxide dispersion liquid, preparing a FeOOH / GO intermediate-state composite material, and preparing ferroferric oxide / nitrogen doped graphene. Soluble iron salt is used as a raw material, and hydrolysis and calcining of the iron salt are utilized for self-assembly to form the ferroferric oxide / nitrogen doped graphene composite material. The composite material has certain 3D structural configuration and has high specific surface area and good three-dimensional pore structure passages, and unique structure can optimize wetting condition of electrolyte to enable the composite material to present high operation stability.

The invention discloses a preparation method of hydroxypropyl starch resistant dextrin, and relates to the technical field of resistant dextrin. According to the method, hydroxypropyl starch is used as a raw material, prepared starch paste has high transparency, high fluidity, weak retrogradation performance, high stability and good freeze-thaw stability, then alpha-amylase is added for hydrolysis, the solubility of glucose is improved, the content of free glucose in the product can be effectively reduced, and the content of the resistant dextrin is increased; then a starch branching enzyme isadded, the digestion resistance of the starch paste is improved, and therefore the content of the resistant dextrin is more effectively increased. The preparation process for preparing the resistantdextrin by using the hydroxypropyl starch is simple, the yield is high, detection is carried out by means of the method which accords with the national food safety standard GB 5009.88-2014, the content of the resistant dextrin reaches 80% or above, the content of free glucose is 10% or below, and the method has industrial production value.

The invention discloses a saponification-free process for extracting lithium. The saponification-free process comprises four large sections of extraction, washing, back extraction and acid pickling, wherein the extraction is carried out for 2-10 stages, the washing is carried out for 0-20 stages, back extraction is carried out for 2-10 stages and the acid washing is carried out for 2-10 stages; and brine is the refined brine after the boron is extracted, the brine is used for adjusting the acidity before feeding, the pH value of a control system is 0-2, the extraction temperature is 25-50 DEGC, and an obtained reverse extraction liquid is subjected to oil removal, evaporation, cooling crystallization, filtering and drying to obtain a high-purity anhydrous lithium chloride product. According to the saponification-free process for extracting the lithium developed for the first time, the service life of an extraction agent is greatly prolonged, use of sodium hydroxide with relatively expensive price can be avoided, meanwhile, acid consumption is reduced, and production cost is reduced; and after saponification is removed, the whole process is easier to control and operate, continuousproduction can be realized, and the method has certain potential industrial production values.

The invention discloses a preparation method of a ceramic particle reinforced metal-based composite material. The preparation method comprises the following steps of: firstly preparing ceramic particle and resin mixed slurry, carrying out layer-by-layer stacking formation by using a photo-curing 3D (three-dimensional) printing technique to prepare a ceramic particle blank, and carrying out vacuumdegreasing and high-temperature sintering to obtain a ceramic particle preform with a high bonding property; and preparing the ceramic particle reinforced metal-based composite material with a complexspace structure by combining a pressureless infiltration method. According to the preparation method, three-dimensional modeling software is adopted for designing and optimizing the space structure of the preform, the volume fraction of particles is controlled, and the wettability of molten metal and ceramic particles is improved by communicating the inner side faces of the three-dimensional structure; a blank prepared through photocuring 3D printing is not prone to cracking or deforming; after degreasing and sintering, the bonding strength and compactness of the structure of the preform areguaranteed, the collapsing in the melt infiltration process is avoided, the rate of finished products is increased, and the production cost is reduced.

The invention discloses emulsion absorption black gel ink and a preparation method of the gel ink. The gel ink is composed of carbon black paste, polymer emulsion, absorption accelerator, functional assistant, thickening agent, defoaming agent and deionized water; the raw materials are proportioned according to the total weight percents as follows: 10.0-40.0 percent of the carbon black paste, 2.0-20.0 percent of the polymer emulsion, 0.1-0.5 percent of the absorption accelerator, 10.0-30.0 percent of the functional assistant, 0.5-10.0 percent of the thickening agent, 0.1-0.2 percent of the defoaming agent and the rest percent of the deionized water. The emulsion absorption black gel ink prepared in the invention has the advantages of higher color depth in writing, good hand feel and good glossiness, keeping unchanged writing performance after being stored for 12 months under normal temperature, applying to industrial production, and having significant commercial value.

The invention relates to the technical field of timber adhesives, and in particular to a method for preparing a corrosion-resistant soybean protein adhesive by using sodium tetraborate as a preservative. The steps of the method are as follows: after sodium tetraborate and water are added into a reaction vessel and sufficiently dissolved, soybean protein powder and sodium dodecylbenzene sulfonate modifier are then added in sequence, modification reaction takes place by heating under the condition of agitation, and after the reaction ends, the corrosion-resistant soybean protein adhesive is obtained by cooling. The storage and transportation period of the soybean protein adhesive prepared by the invention can reach more than six months under a normal temperature, the soybean protein adhesive is nontoxic, and has a good bonding effect, the bonding strength can be up to 3.5Mpa, and the water-resistant strength reaches 1.4Mpa. Moreover, the preparation process is simple, low in cost and environment-friendly, and is suitable for industrialized production.

The invention relates to the technical field of artificial board production, in particular to a silica sol soybean protein adhesive for fiberboard production and a preparation method of the silica solsoybean protein adhesive. The method comprises the following steps: adding sodium tetraborate and water into a reaction container, fully dissolving the components, adding soy isolate protein and urea, heating under a stirring condition, carrying out a modification reaction, cooling after the reaction is finished, adding silica sol and a polyvinyl alcohol solution, and fully stirring the mixture to prepare the silica sol soy protein adhesive for fiberboard production. The fiberboard produced by the silica sol soybean protein adhesive prepared by the method is high in strength, good in moistureresistance, free of formaldehyde pollution, simple in preparation process, low in cost, environment-friendly and suitable for industrial production.

The invention relates to the technical field of bioengineering, in particular to recombinant bacillus subtilis with high yield of N-acetylneuraminic acid, and a construction method and application of the recombinant bacillus subtilis. According to the recombinant bacillus subtilis with high yield of N-acetylneuraminic acid, bacillus subtilis is taken as an expression host; an N-acetylneuraminic acid synthetase gene neuB and an N-acetylglucosamine 2-epimerase gene neuC are integrated onto a bacillus subtilis genome to be stably expressed; and then overexpression on a glucosamine phosphate mutase gene glmM and a fructose 6-phosphate transaminase gene glmS is carried out on a plasmid. According to the invention, a gene engineering technology is adopted to modify the B.subtilis so as to directly synthesize the N-acetylneuraminic acid by using glycerol as the substrate; the production process is simple; environmental protection and no endotoxin are provided; and the method can be used in the food field, and has industrial production value.

The invention discloses an apatite structure lanthanum silicate luminescent powder material as well as a preparation method and an application thereof, and particularly relates to the method for preparing the apatite structure lanthanum silicate luminescent powder material by adopting a coprecipitation method, which can be used for successfully preparing an impurity-phase-free high-performance luminescent material, wherein lanthanum silicate is taken as the matrix, the silicate luminescent powder has excellent thermal stability and chemical stability and is low in cost; europium ion Eu<3+> isused as an activating agent, and the luminescent powder material capable of emitting red light can be prepared. The preparation method disclosed by the invention overcomes the defects that a high-temperature solid-phase method is too high in phase forming temperature and a sol-gel method is complex in process, can form a target product after heat preservation at a relatively low temperature (800-1000 DEG C), and is suitable for industrial application.

The coenzyme Q10 synthesizing process with coenzyme Q0 hydroquinone and isodecyl alcohol deca-isopentyl alcohol of purity not lower than 95 % as material includes dewatering and condensation reaction at room temperature under the catalysis of trifluoro methane sulfonic acid in no oxygen environment to obtain coenzyme Q10 hydroquinone, the oxidation of the reacted product without passing through any treatment with hydrogen peroxide and water solution of ferric trichloride to obtain crude coenzyme Q10 product, and crystallization of the crude coenzyme Q10 product in acetone to obtain yellow coenzyme Q10 product powder in content over 99 % and yield over 65 %. The present invention has simple operation, easy purification of the product, high yield, mild reaction condition, safe and controllable production process and industrial production value.

The invention discloses diphenylphosphine cumyl phenolic ester and a synthetic method thereof. According to the method, shielding gas is introduced into a mixture of 2,4-bis(1-methyl-1-phenylethyl)-pheno and a solvent, mixed liquid of chlorodiphenylphosphine and solvents is added in a dripping mode, and thermal reaction is carried out after addition; after the thermal reaction is over, the protective gas is stopped from being introduced, temperature is lowered, the solvents are removed through distilling at normal pressure or lower pressure, and light yellow thick liquid is obtained; a crystallizing agent is added to the thick liquid, then a proper amount of activated carbon is added, heat preservation is carried out for 30 min in a reflux state, filtration is carried out at a high temperature, white solid is separated after filtered liquid is cooled, and the diphenylphosphine cumyl phenolic ester is obtained after filtering and drying. The synthetic process overcomes the defect that acid-binding agents are used in conventional phosphite ester compound synthesis reaction, by-products generated due to the reaction are actively extruded by the introduced protective gas, and the procedures of suction filtration, washing, generated amine salt filtration and removal and the like are omitted. Besides, the diphenylphosphine cumyl phenolic ester is directly separated by means of the crystallizing agents, so that the environment pollution problem caused due to the fact that the diphenylphosphine cumyl phenolic ester is obtained through multiple times of washing by means of organic solvents in the prior art is solved.

This invention relates to a preparation of separating 4-hydroxyisoleucine from cucurbit seeds, belonging to research field of phytochemistry. By Lactonizating 4-hydroxyisoleucine that is in cucurbit seeds, (2S,3R,4S)- 4-hydroxyisoleucine internal ester is directly separated by utilizing column chromatography or method of solid liquid extraction, this internal ester is hydrolyzed in the condition of alkalinity to produce (2S, 3R,4S)-4-hydroxyisoleucine. Using this invention separates 4-hydroxyisoleucine from cucurbit seeds, not only obtains (2S,3R,4S)- 4-hydroxyisoleucine that is high purity with high yield, but also the line of separating depuration is convenient and feasible, it possesses production value of industrialization.

The invention provides a simple preparation method of felbinac. The method comprises the following steps: taking biphenyl and ethyl oxalyl monochloride as initial raw materials; carrying out Friedel-Crafts reaction under the action of aluminum trichloride to generate biphenylethyl glyoxylate under the condition of low temperature; then carrying out alkaline hydrolysis to obtain felbinac salt; carrying out Huang-Minlon reaction reduction and acidification to obtain the felbinac. The method has the advantages of no need of intermediate separation, simplicity and convenience in operation, environment friendliness, high yield and industrial production value.

The invention discloses a method for preparing (3S)-3-amino-2-hydroxyl-N-cyclopropylhexanamide. The compound can be used as an important intermediate for preparing telaprevir. According to the invention, ethyl butyrylacetate is used as a starting raw material, and through steps of helogenation, substitution, amination, reduction, hydrolysis, deprotection, resolution and the like, (3S)-3-amino-2-hydroxyl-N-cyclopropylhexanamide is prepared. The method provided by the invention has advantages as follows: raw materials are cheap and easily available; reaction yield is high; and costs are high.

The invention relates to an oligopeptide-1 biological hair care membrane for repairing hair follicles. The biological hair care membrane is prepared from the following raw materials in parts by weight: oligopeptide-1 of which the biological activity in the biological hair care membrane is 20-200IU / ml, 2-7 parts of an emulgator, 0.5-2.5 parts of a conditioner, 2-4 parts of a thickening agent, 1-4 parts of a fat increasing agent, 0.1-0.5 part of a preservative, 0.1-0.5 part of a chelating agent, 1-7 parts of natural plant extract and 0.1-0.3 part of spice, wherein the 1-7 parts of natural plant extract specifically includes 1.5-2 parts of ginger juice extract, 1 part of ginseng extract, 1-2 parts of polygonum multiflorum extract and 1-2 parts of semen coicis extract. The invention has the beneficial effects that the invention develops a novel biological hair care membrane for repairing hair follicles and promoting the hair follicle to grow and develop hair; the oligopeptide-1 component contained in the biological hair care membrane is capable of effectively repairing hair follicles and restraining the alopecia phenomenon caused by the damaged and aged hair follicles; the oligopeptide-1 component has excellent hair-generating and hair-developing functions for the alopecia phenomenon.

The invention discloses a preparation method of bis-[3-(triethoxy silicon)-propyl]-disulfide, relates to the technical field of silane coupling agent synthesis, and in particular relates to a preparation method of bis-[3-(triethoxy silicon)-propyl]-disulfide. The preparation method comprises the following steps: step 1, reacting potassium hydroxide with water to prepare a potassium hydroxide solution; step 2, adding potassium carbonate and powdered sulfur into the potassium hydroxide solution, and reacting to obtain a potassium disulfide solution; step 3, adding a phase transfer catalyst into the potassium disulfide solution, then dropwise adding 3-chloropropyltriethoxysilane, and carrying out a reaction so as to obtain bis-[3-(triethoxy silicon)-propyl]-disulfide; the molar ratio of the potassium hydroxide to the potassium carbonate to the sulfur powder to the 3-chloropropyltriethoxysilane is (1.2-1.5) : (0.3-0.6) :(1.2-1.8) : 1. The method has the positive effects of avoiding the generation of hydrogen sulfide gas, being simple in post-treatment, being green and environment-friendly, and improving economic benefits.

The invention discloses a method for synthesizing a micro-powder cubic boron nitride single crystal, and belongs to the technical field of superhard material synthesis. The method comprises the following steps of: (1) taking hBN serving as a raw material, taking a mixture of Li3BN2, Li3N and NH4Cl serving as a catalyst, uniformly mixing the catalyst and the hHBN according to a mass ratio of (10-20): (90-80) and pressing into a cylinder; (2) putting the cylinder pressed in the the step (1) into a graphite heating pipe to assemble into a synthetic rod, and then putting the synthetic rod into a pyrophyllite assembly block to form a synthetic block; (3) placing the assembly block in the step (2) into a high-pressure chamber of a cubic press, and carrying out pressure heating at 70-83 MPa and 4.0-4.8 kw; and (4) taking out a high-temperature and high-pressure composition obtained in the step (3), and obtaining the cubic boron nitride crystal through crushing, water injection soaking, shaking table selection and conventional acid-base treatment.

The invention relates to a carrying mechanical arm, in particular to a crystal particle carrying mechanical arm which is used in a crystal particle sorting machine or a solid crystal machine and can adjust downward pressure to crystal particles. The mechanical arm consists of a back arm, a supporting plate, an elastic piece, a front arm, a pressure adjusting rod, a pressure adjusting nut, a spring, a vacuum suction nozzle and a vacuum suction nozzle joint. The supporting plate is fixed above the back arm. The elastic piece is fixed at the front end of the back arm, and simultaneously the frontend of the elastic piece is fixed with the front arm. The front end of the front arm is provided with a vacuum suction nozzle fast-removing structure comprising the vacuum suction nozzle and the vacuum suction nozzle joint. An extension at the back part of the front arm can pass through an opening at the front end of the back arm. The back end of the extension at the back part of the front arm isconnected and fixed with the pressure adjusting rod which passes through a hole on the supporting plate and can freely slide in the hole. The pressure adjusting rod is thread-connected with the pressure adjusting nut. Simultaneously, the spring passes through the pressure adjusting rod and is supported on the supporting plate, and the pressure adjusting nut is supported by taking advantage of theforce of the spring. The mechanism of the pressure-adjustable mechanical arm has the advantages of simple and clear structure, convenient adjustment and free movement, achieves economic benefits andhas an industrial production value.

The invention discloses a synthesis method of fenpropimorph. The method adopts p-tert-butyl-beta-methylphenylpropanol as a start raw material and comprises the following steps of: performing esterification by use of methylsufonyl chloride or performing chlorination by use of thionyl chloride to synthesize an intermediate; and synthesizing by use of the intermediate and 2,6-dimethylmorpholine to generate fenpropimorph. The method disclosed by the invention has the advantages of high reaction yield, no environmental pollution, high finished product content, simple process, industrial production value, easiness in operation, simple equipment, few three wastes, low cost and the like.

The invention belongs to the technical field of macromolecular flame retardants, and particularly relates to a diphenylphosphinamide silicone oil flame retardant and a preparation method thereof. According to the main technical scheme, the structural formula of the diphenylphosphinamide silicone oil flame retardant is shown in the specification. According to the diphenylphosphinamide silicone oil flame retardant and the preparation method thereof provided by the invention, the flame retardant effect and the stability are improved on the basis of not changing the mechanical property of a high polymer material.

The invention discloses a synthesis method of Fenpropidin. The synthesis method comprises the steps of: chloridizing tertiary butyl-beta-methyl phenylpropanol by utilizing a hydrogenation product of 4-tert-butyl phenyl isobutyraldehyde through sulfoxide chloride in the presence of a catalyst DMF (Dimethyl Formamide), and reacting with piperidine to obtain a target product, namely Fenpropidin. The synthesis method is simple in process and high in reaction yield and product content, is free of environmental pollution and has the advantages of simplicity in operation, simple device, less three wastes, low cost and the like.

The invention belongs to the technical field of food packaging paper preparation, and particularly relates to a water-based coating for food packaging paper and a preparation method of the water-based coating. The water-based coating for the food packaging paper is prepared from the following raw materials in parts by weight: 3 to 10 parts of dialdehyde starch, 5 to 15 parts of soybean protein isolate powder, 200 parts of water, 5 to 15 parts of silica sol and 0.2 to 0.3 part of coupling agent KH560. The preparation method comprises the following steps: proportionally adding dialdehyde starch, soybean protein isolate powder and water into a reactor, uniformly stirring and mixing, adding sodium hydroxide to adjust the pH value, and heating for gelatinization; and after the gelatinization reaction is finished, cooling the gelatinized material to normal temperature, adding silica sol and a coupling agent, and uniformly mixing to obtain the water-based coating paint for producing food packaging paper and paperboards. The food packaging paper produced by the coating paint prepared by the invention is high in strength, good in water resistance, green and environment-friendly, and the preparation process is simple in process, low in cost and suitable for industrial production.