anufacture or treatment of nano-structures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units (B82B3)

B82   Nano-technology(3676)
B82B3                 anufacture or treatment of nano-structures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units(1983)
ethod of producing nanocapules of l-arginine // 2627819
FIELD: nanotechnology.SUBSTANCE: method is characterized in that L-arginine is slowly added to a suspension of carrageenan in butyl alcohol in the presence of 0.01 E472c preparation as a surfactant with stirring at 1300 rpm. Then 5 ml of hexane are poured, the resulting suspension of the nanocapsules is filtered off and dried at room temperature. The mass ratio core: the shell is 1:3 or 1:1.EFFECT: simplification and acceleration of the process of obtaining nanocapsules.3 ex
ethod for producing carbon-fluorocarbon nanocomposite material // 2627767
FIELD: chemistry.SUBSTANCE: method for producing a carbon-fluorocarbon nanocomposite material is proposed, which includes the thermal degradation of solid polytetrafluoroethylene, which is carried out in a plasma medium formed as a result of the preliminary destruction of a similar sample of polytetrafluoroethylene in a pulsed high-voltage electric discharge in air at a pulse amplitude of 2-10 kV, followed by the collection of degradation products in the form of an ash-like product containing individual nanoparticles of the elements that make up the electrodes. The product obtained is subjected to heat treatment by heating with an external source before the appearance of electrical conductivity, accompanied by self-heating of the product, when electric current is passed therethrough. As a result of heat treatment, a carbon-fluorocarbon material containing nanografen bands is produced and a powdered product consisting of composite nanoparticles containing carbon and fluorocarbon components.EFFECT: producing high-yield carbon-fluorocarbon nanocomposite materials with a well-defined nanostructure providing their new properties and expanding the field of application.3 cl, 12 dwg, 2 ex

ethod of producing nanocapule of dry extract of briar in agar-agar // 2627585
FIELD: nanotechnology.SUBSTANCE: dry briar extract is slowly added to the agar-agar suspension in butanol in the presence of E472c as a surfactant with stirring at 1000 rpm. Then hexane is poured. After that, the precipitate is filtered off and dried at room temperature, the ratio of dry extract of briar to agar-agar is 1:1, 1:3 or 5:1.EFFECT: nanocapsules production process simplification and acceleration, reduction of losses during the nanocapsules production.3 dwg, 4 ex
ethod of obtaining nanocapules of antibiotics of tetracyclin row in konjac gum // 2627580
FIELD: nanotechnology.SUBSTANCE: antibiotics are selected from tetracycline, dioxycycline, minocycline, when the method is applied to a suspension of konjac gum in butanol and 0.01 g of E472c preparation as a surfactant, an antibiotic powder is added, then petroleum ether is added dropwise, which is used as a precipitant. The ratio of the amounts of antibiotic to the amount of konjac gum is 1:1, 1:3, 1:5 or 5:1, the resulting suspension of nanocapsules is filtered off and dried.EFFECT: nanocapsules production process simplification and acceleration, reduction of losses during the nanocapsules production.4 dwg, 11 ex

ethod of obtaining nanocapsules of unabi // 2627579
FIELD: nanotechnology.SUBSTANCE: method of producing unabi nanocapsules is characterized in that the unabi powder is dispersed into a suspension of sodium carboxymethylcellulose in ethyl alcohol in the presence of 0.01 g E472c preparation as a surfactant with stirring at 1000 rpm. Then 10 ml of methylene chloride are poured, the resulting suspension is filtered off and dried at room temperature. The ratio core/shell is 1:1, or 1:3, or 1:5, or 5:1.EFFECT: nanocapsules manufacture process simplification and acceleration and weight yield increase.5 ex, 1 dwg
ethod of obtaining nanocapules of metal salts in carraginan // 2627578
FIELD: nanotechnology.SUBSTANCE: carraginan is used as the nanocapsule shell, and the metal salt is used as the core for the mass ratio of the core: shell 1:3. The metal salt is added to a suspension of carraginan in ethanol containing the E472c preparation as a surfactant, with stirring at 1200 rpm, then methylene chloride is poured, the resulting suspension is filtered off and dried at room temperature.EFFECT: simplification and acceleration of the process of obtaining nanocapsules.11 ex
ethod of producing nanocapules of metal salts in sodium alginate // 2627577
FIELD: nanotechnology.SUBSTANCE: sodium alginate is used as the nanocapsule coating, and the metal salt is used as the core for the core to shell: 1:3 shell weight ratio, while the metal salt is added to a suspension of sodium alginate in butanol containing the E472c preparation as a surfactant with stirring 1200 rpm, then petroleum ether is poured, the resulting suspension is filtered off and dried at room temperature.EFFECT: simplification and acceleration of the process of obtaining nanocapsules.11 ex
ethod for producing nanocrystallites of low-molecular chytosan // 2627540
FIELD: chemistry.SUBSTANCE: method involves dispersing in water of high molecular weight chitosan with a molecular weight of 190-250 kDa with vigorous stirring, subsequent treatment in a 9.00-17.00% aqueous solution of sulfuric acid at 100-120°C for 20-55 minutes for homogeneous hydrolysis. The hydrolysis product is then precipitated from the sulfuric acid solution by introducing a 10% sodium hydroxide solution into the hot solution at a volume ratio of sodium hydroxide to sulfuric acid of 1:0.667. The product obtained is washed and dried at room temperature.EFFECT: invention makes it possible to obtain low molecular weight chitosan with a molecular weight of 5-20 kDa with a high degree of crystallinity, thermal stability, antimicrobial activity and biological compatibility.1 tbl, 3 ex

New materials and methods for dispersing nanoparticles in matrices with high quantum outputs and stability // 2627378
FIELD: physics.SUBSTANCE: first, luminescent nanoparticles are mixed, the outer surface of which is covered with two types of protective molecules, with a solid polymer precursor. Protective molecules contain the first and second functional groups. The first functional group is connected to the outer surface of the luminescent nanoparticle, and the second functional group provides a miscibility with the precursor of the solid polymer and/or the ability to react with it. The first functional group of the first type of protective molecules contains a metal ion having coordination functionality, and the first functional group of the second type of protective molecules has the functionality of a Lewis base. A polymeric article, for example a coating, a self-supporting layer or a plate transmitting light with a wavelength of 380-750 nm is produced from the resulting solid polymer with embedded luminescent nanoparticles. The lighting device comprises a light source and a light transducer including mentioned solid polymer. Any luminescent nanoparticles can be used in the invention.EFFECT: stability of nanoparticles and the colour purity are improved, the luminescence efficiency is increased and the lifetime is increased.16 cl, 8 dwg

ethod of producing nanocapsules of reservoir in kappa-carrageenan // 2626828
FIELD: nanotechnology.SUBSTANCE: kappa-carrageenan is used as the nanocapsule shell, and resveratrol is used as the core for the mass ratio of the shell: the core is 3:1 and 1:5. Resveratrol is slowly added to the kappa-carrageenan slurry in butanol in the presence of 0.01 g E472 c as a surfactant with stirring at 1000 rpm, then butyl chloride is added. The resulting suspension is filtered and dried at the room temperature.EFFECT: nanocapsules production process simplification and acceleration, reduction of losses during the nanocapsules production.1 dwg,1 tbl

ethod for obtaining nanocapules of dry jerusalem artichoke extract // 2626821
FIELD: food industry.SUBSTANCE: method for obtaining nanocapsules of dry Jerusalem artichoke extract is characterized by the fact that konjac gum is used as a shell of the nanocapsules, and dry Jerusalem artichoke extract - as a core. The nanocapsules are prepared by stirring the mixture of konjac gum in butanol with 0.01 g of E472c preparation as a surfactant on a magnetic stirrer, followed by adding dry Jerusalem artichoke extract to the mixture, precipitating with 10 ml of butyl chloride, then the obtained suspension of the nanocapsules is filtered, washed with butyl chloride and dried, the core:shell ratio being 1:3, 1:1, or 1:5, or 5:1.EFFECT: simplifying and accelerating the process of obtaining nanocapsules and ensuring higher weight yield.2 dwg, 5 ex
ethod for fulleren c60 purification from oxide impurities // 2626635
FIELD: chemistry.SUBSTANCE: crystalline fullerene C60 is heat treated at 160-170°C in an inert gas stream to transfer the oxide impurity C60O into the dioxide impurity C120O. The treated crystalline product is then dissolved in a weakly polar aromatic solvent, for example, ortho-xylene. To convert C120O to the precipitated phase, a strongly polar solvent is added, the molecule of which does not contain double bonds, and a nitrogen atom, for example isopropyl alcohol. The volume ratio of ortho-xylene:isopropyl alcohol is 1:(0.35-0.75), respectively. After this, C120O is separated by filtration, and the desired product - fullerene C60, remaining in the solvent mixture solution, is isolated by evaporation.EFFECT: method is simplified, irreversible losses of expensive C60 are reduced.2 cl, 6 tbl
ethod of betulin nanocapsules production // 2626508
FIELD: nanotechnology.SUBSTANCE: betulin is added to the suspension of agar-agar in petroleum ether in the presence of 0.01 g. of the surfactant E472c, wherein the core to shell weight ratio is 2:1, 1:1 or 1:3 when recalculating to dry matter, then, with stirring at 1300 rpm, ethyl acetate is added, the resulting suspension is filtered and dried at room temperature.EFFECT: nanocapsules production process simplification and acceleration, reduction of losses during the nanocapsules production.3 ex
ethod of obtaining chloralhydrate nanocapsules in sodium alginate // 2626507
FIELD: nanotechnology.SUBSTANCE: into a slurry of sodium alginate in hexane and 0.01 g of E472c as a surfactant, chloral hydrate powder is added, then methyl ethyl ketone is added. The ratio of the amount of chloral hydrate and the amount of sodium alginate is 1:1 or 1:3, the resulting suspension is filtered off and dried.EFFECT: nanocapsules production process simplification and acceleration, reduction of losses during the nanocapsules production.3 ex
ethod of partial recoverying cyclodienes and cyclotrienes // 2626455
FIELD: chemistry.SUBSTANCE: nickel nanoparticles immobilized on zeolite are used as the catalyst, the reactants are fed directly to the catalyst by two streams, the first of which is hydrogen supplied at a flow rate of 150-310 l/(kg⋅cath), the second - cyclodiene or cyclotriene supplied at a flow rate of 0.55 l/(kg⋅cath)⋅, and the reaction is carried out at a temperature of 180-240°C.EFFECT: simplification of the method for recovering unsaturated cyclic compounds and a decrease in the reaction time.3 ex
Complex silicate of rare-earth elements in nanoamorphic state // 2626020
FIELD: medicine.SUBSTANCE: invention can be used in biomedicine for blood vessels visualization, in electronics for up-conversion transducres in silicon solar batteries cells. The complex silicate of rare earth elements in an nanoamorphous state has the composition Sr2Y(8-x-y)YbxErySi6O26, where 0.05≤x≤1; 0.01≤y≤0.2 is the up-conversion phosphor of red light with a high degree of radiation.EFFECT: green radiation intensity is reduced.3 ex
ethod of obtaining aluminium oxide with structure χ-al2o3 // 2626004
FIELD: chemistry.SUBSTANCE: method of obtaining a nanodispersed phase with a structure χ-Al2O3 involves screening out the thermochemically activated gibbsite of the target fraction of the product of thermoactivation of gibbsite with a particle size of less than 120 mcm. The fraction is then heated in a muffle furnace at a rate of 20-100°C/min up to a temperature of 600-1050°C, followed by keeping it at this temperature for at least 0.5 h.EFFECT: increase in the particle size of the nanodispersed phase, increase thermal stability, simplify the production technology.1 tbl, 10 ex

ethod of producing nanopowder of cobalt ferrite and microreactor to this end // 2625981
FIELD: technological processes.SUBSTANCE: method comprises supplying the primary components - a mixture of solutions of cobalt and iron salts in the ratio corresponding to stoichiometry CoFe2O4, and an alkali solution in proportion to the salts solutions providing acidity of the medium in the range from 7 to 8, corresponding to the conditions of coprecipitation of the components, while the solutions of the primary components are supplied in the form of thin jets with a diameter of 50 to 1000 micron at the speed of 1.5 to 20 m/s colliding in the vertical plane at the angle of 30° to 160°, at the temperature in the range of 20°C to 30°C, and a pressure close to atmospheric pressure. The usage ratio of the primary components is set in such a way that when the jets collide, a liquid fog is formed in which the solutions of the primary components are mixed and engage. The microreactor for the method comprises a housing 1 and nozzles 2 with flow diffusers 3 for supplying primary components 10 and a nozzle 4 for products removal, the microreactor housing 1 is of a cylindrical shape with a conical bottom 5, a cover 6, the nozzles 2 with flow diffusers 3 for supplying primary components 10 are made with the possibility to provide fine adjustment of the jet direction, in the cover 6 coaxially to the housing 1 a nozzle 9 is provided for supplying purging gas, and an outlet nozzle 4 is installed in the bottom 5 to remove purge gas and reaction products. The area of the outlet nozzle 4 is 20-50 times bigger than the total area of all nozzles for supplying primary components. Two or more nozzles 17 may be installed in the cylindrical part of the housing to supply a surface-active substances solution in the form of thin jets with a diameter of 10 to 1000 micron, directed to the liquid fog of the primary components engaging solutions.EFFECT: invention enables to reduce the temperature and pressure necessary to make a synthesis of oxide nanoscale cobalt ferrite particles, to reduce energy costs and ensure continuity of the process with the possibility of its implementation on an industrial scale, to reduce the cost of equipment, to increase yield and selectivity of the process, to provide optimal conditions for rapid reactions via maintenance of stable and effective hydrodynamic conditions for reagents contacting and rapid removal of reaction products.3 cl, 5 dwg, 2 ex
ethod of carbon nanotubes production by method of chemical vapor deposition // 2625978
FIELD: nanotechnology.SUBSTANCE: substrate is applied to the reactor, it has a nickel and/or cobalt and/or iron compound is applied, the compound is prepared by mixing and reacting the formates of these metals with a nitrogen-containing compound, such as a monodentate ligand from the range comprising ammonia and/or methylamine, and/or monoethanolamine in an amount of 18-42 g⋅E at 1 g⋅E of a metal formate or a bidentate ligand from a series comprising hydrazine and/or ethylenediamine and/or diethanolamine in an amount of 9-21 g⋅E at 1 g⋅E of metal formate. The substrate is a fabric of mineral or carbon fibers, for example a carbon-carbon composite material with a porosity of 2-20%; of a metal, for example, titanium, copper, tantalum, the surface of which has been pretreated with plasma electrochemical or hydrothermal oxidation; of carbon-ceramic composite material with a porosity of 0.5-10%. The substrate may have a complex surface geometry. In the reactor, the noted compound decomposes at high temperature to form a catalytically active particle shape without the use of a reducing gas medium. Carbon nanotubes are synthesised on the resulting particles with the subsequent supply of carbon compounds through a substrate serving to orient carbon nanotubes.EFFECT: invention makes it possible to synthesise carbon nanotubes on substrates of any composition and geometry, to increase the specific yield of nanotubes.8 cl, 3 dwg, 1 tbl, 8 ex
Extraction method of obtaining nanodimensional crystals of metal oxides // 2625877
FIELD: nanotechnology.SUBSTANCE: heterogeneous system, consisting of a water-soluble polymer and a phase-forming metal salt or an ammonium salt, is prepared in the distilled water to produce nanodimensional crystals of metal oxides by an extraction method. This forms a water-polymer and water-salt phase. An aqueous solution of the extracted metal sulphate, isolated from copper or zinc, is added to one of the phases. An aqueous solution of sodium or ammonia hydroxide is added to the other phase. After this, the prepared heterogeneous system with added additives is kept at a temperature of 25-80°C and atmospheric pressure for 1-24 hours. The precipitate, obtained in the interphase layer, is isolated, washed with distilled water and air dried until the mass change ceases. Nanodimensional copper or zinc oxide crystals are obtained. Polyethylene oxide (polyethylene glycol) with a molecular weight of 1500-20000 is used as the water-soluble polymer. A metal sulfate, selected from the group of Na, Li, Cu, Zn, Mg, Cd, Co, is used as a phase-forming metal salt. Sulfate is used as the ammonium salt.EFFECT: invention makes it possible to simplify the production of nanocrystals of metal oxides without the use of toxic, flammable and explosive organic solvents.6 ex, 6 dwg
Adhesive composition and aluminium layered structure containing it with increased adhesive joints interlaminar strength // 2625849
FIELD: chemistry.SUBSTANCE: invention relates to the field of adhesive compositions based on phenol-formaldehyde resins intended for bonding of structures of various purposes, as well as laminated aluminium structures obtained with their use with increased interlaminar strength of adhesive joints. The adhesive composition is characterized by being obtained by the first three-component part mixing with the second three-component part. The first three-component part is obtained by stirring a solution of phenol-formaldehyde resin and a solution of hexareoresetin resin successively added to the rubber mixture solution. The second three-component part is obtained by dispersing the sulfur powder and aluminium oxyhydroxide nanopowder particles in butyl acetate. The amount of aluminium oxyhydroxide nanopowder particles in a weight ratio to the adhesive composition is selected from a range of 0.1 to 1.0%, preferably from a range of 0.4 to 0.7%. The aluminium oxyhydroxide nanopowder particles have a size selected from the range of 0.5 to 3.0 mcm. The laminated structure is characterized by comprising two layers of aluminium foil and a layer of a cured adhesive composition located therebetween, made in accordance with the claimed adhesive composition.EFFECT: increased adhesive-cohesive interlaminar strength limit and increased adhesion of the adhesive composition to aluminium foil in layered structures.6 cl, 2 dwg

ethod for producing sodium hydrogen carbonate nanocapsules in carrageenan // 2625764
FIELD: nanotechnology.SUBSTANCE: sodium bicarbonate is dispersed in carrageena suspension in petroleum ether with the presence of 0.01 g of E472c preparation as a surfactant with stirring at 1200 rpm, then methylene chloride is poured. The mass ratio of core: shell is 1:1, 1:2, 1:3 or 1:5 in terms of dry substance, the resulting suspension is filtered off and dried at room temperature.EFFECT: simplifying and accelerating the nanocapsule obtaining process, reducing the losses when obtaining nanocapsules.2 dwg, 5 ex
Silicon-organic niosemes with bactericidal and paramagnetic properties // 2625722
FIELD: pharmacology.SUBSTANCE: organosilicon niosomes 30-80 nanometers in size are modified by silver atoms in a concentration of 100 μM and can be used for encapsulating drug substances. Adsorption of silver reduced by chemical means to the surface of niosomes is carried out by ultrasonic action. The functional group of silicon oxide in the surface layer of niosomes is a good adsorbent for silver. A study of silver-plated disodium diffusion methods showed their antimicrobial activity against bacteria isolated from the surface of the skin.EFFECT: invention improves the characteristics of organosilicon niosomes, giving them an animicobic activity and targeted drug delivery.2 dwg

ethod of obtaining chia seeds nanocapules (salvia hispanica) in carageenan // 2624533
FIELD: nanotechnology.SUBSTANCE: method of obtaining chia seeds nanocapules (core) in a coat of carrageenan is described. According to the method, the chia seed powder is added to a suspension of carrageenan in benzene in the presence of 0.01 g E472c as surface-active substance. The mixture is then stirred at 1000 rpm, methylene chloride is added. The resulting suspension is filtered and dried at the room temperature. The ratio core:shell is 1:3 or 1:1.EFFECT: nanocapsules manufacture process simplification and acceleration and weight yield increase.1 dwg, 3 ex

Cobalt nanocatalizer of fisher-tropsh synthesis, localized in porous material, and method of its obtaining // 2624441
FIELD: chemistry.SUBSTANCE: cobalt Fischer-Tropsch synthesis nanocatalyst is described localized in a porous material. The catalyst was prepared by a sol-gel process using an organogel as a matrix, which is a linear amphiphilic polymer. The active component is used as a core, and the porous material is used as a shell. The active component comprises the first metal component in the form of Co, the second metal component selected from Ce, La and Zr, and the third metal component selected from Pt, Ru, Rh and Re. The catalyst comprises the first metal component of 10-35 wt %, the second metal component of 0.5-10 wt %, the third metal component of 0.02-2 wt %, and the carrier is the rest. The carrier is a porous material of a spherical shape. The porous material has a pore size of 1-20 nm and a specific surface of 300-500 m2/g, the particle diameter of the active component core is 0.5-20.0 nm.EFFECT: low methane selectivity and good selectivity of C5+.9 cl, 1 dwg, 1 tbl, 12 ex

ethod for obtaining fibrous material containing oxide nanoparticles from thermoplast melt // 2624189
FIELD: chemistry.SUBSTANCE: method, like the prototype, involves forming a fibrous material by laminating a melt of a thermoplastic polymer by the action of a gas stream containing solid particles. Particles penetrate into the surface layer of the softened material, and particle consolidation occurs, when the material passes into a solid aggregate state. New is that the formation of fibers occurs under the influence of an unheated gas stream containing oxide nanoparticles or small droplets of liquid, in which such nanoparticles having an ambient temperature are dispersed. Gas ejection is provided, in which an additional flow of unheated gas is generated around the jet of molten polymer fed. The particle size is less than 100 nm.EFFECT: production of fibrous material with oxide nanoparticles fixed on its surface with one or, at least, two kinds, with minimal energy costs and simplification of the technological process.2 dwg
ethod of deep recycling iron-containing wastes // 2623928
FIELD: chemistry.SUBSTANCE: method comprises precipitating from the said solutions of solid ferrous sulfate of ferrous divalent Fe2SO4⋅7H2O. Then it is sent to biooxidation solution, consisting of cultivated on a nutrient medium 9K microorganisms Ac. ferrooxidans and Ac. Thiooxidans, in a continuous vapour regime with a flow at atmospheric pressure for 12-50 hours at an average oxidation rate of 1-1.5 g/l per hour with transfer of ferrous iron to trivalent. Further, alkali is added to increase the pH of the solution and to obtain a precipitate of solid ferrous sulfate and to perform its ultrasonic work-up to obtain a product for the production of iron oxide pigments.EFFECT: increasing the depth of processing of iron-containing waste, reducing waste disposal costs and obtaining highly liquid transparent nanoscale pigments.5 cl, 1 ex
Carrier for catalysts based on aluminium oxide and method of its preparation // 2623436
FIELD: chemistry.SUBSTANCE: carrier for catalysts based on alumina with a corundum structure of various geometric shapes has a specific surface area of 2.5 m2/g up to 10 m2/g, the total pore volume from 0.30 cm3/g to 0.64 cm3/g. Pores up to 0.1 nm do not exceed 25% of the total porosity, pores from 0.1 to 4 nm make up at least 75% of the total porosity, pores over 4 nm do not exceed 12% of the total porosity, contains sodium cations from 0.02 to 0.35%, silicon from 0.05 to 5% and iron from 0.01 to 2%. The invention also relates to a method of producing mentioned compounds.EFFECT: obtaining carriers with a specific surface in a wider range, with a narrower pore size distribution.9 cl, 1 tbl, 14 ex
Cooking method of metal-graphene nanocomposite materials // 2623410
FIELD: nanotechnology.SUBSTANCE: aluminium, magnesium or alumo-magnesium alloy, containing, wt %: aluminium 99.9-0.1; magnesium 0.1 to 99.9 is melted in the melt of alkali and/or alkaline earth metal halogenides, containing 0.1-20 wt % of the carbonaceous additive from the row, containing the metal or nonmetal carbides or solid organic substances, such as hydrocarbons, carbohydrates, carboxylic acids, for 1-5 hours at the temperature of 700-750°C. Then slowly cool at the rate of not more than 1 deg/min.EFFECT: decrease of the process temperature, the resulted metal-graphene nanocomposite has the reduced density and increased hardness, strength, modulus of elasticity and percent elongation.6 dwg, 3 ex

ethod of producing a colloidal water solution of silver // 2623251
FIELD: chemistry.SUBSTANCE: method for the preparation of a colloidal solution of silver nanoparticles, comprising the preparation of aqueous solutions of silver nitrate and solutions of a supramolecular polymer carrier, in which a synthetic highly purified silica with a concentration of 500-100000 ppm is used as a supramolecular polymer and mixed with AgNO3 in a concentration of 5-1000 ppm in distilled water with vigorous stirring. Then, silver nitrate is reduced to a metallic nano-sized state by sodium tetraboride under dark conditions, or using monochromatic red light at a wavelength of 620-760 nm.EFFECT: increasing the shelf life of silver after the process of its recovery.1 dwg
Adhesive composition and method for its application // 2623060
FIELD: medicine.SUBSTANCE: adhesive composition and method for its application are described. The adhesive composition includes silver particles stabilized by submicron particles of titanium dioxide and a filler, according to the invention, a mixture of phenol-formaldehyde resins, polyvinyl butyral, dibutylphthalate, castor oil and rosin components is used as a filler at a certain component ratio. A method is described which comprises adhesive composition application to a postoperative wound or suture at a dose of 0.5-1.0 mg/cm2, once.EFFECT: method eliminates the development of postoperative inflammation due to prolonged preservation antibacterial properties, has a pronounced immobilizing effect on the surgical wound edges, improving the quality of the joined surface.2 cl, 5 tbl

ethod for manufacture of material for tissue-engineering structures and forming solution for its implementation // 2622986
FIELD: medicine.SUBSTANCE: invention relates to methods for production of a material for tissue-engineering structures consisting of bioresorbable polyester fibers obtained by electrospinning from solutions of the above polymers to produce biologically active materials absorbable in the human body, which can be used for tissue-engineering of structures of various configurations, simulating the extracellular matrix and having controlled bioresorption used to create a variety of implants, including bio-absorbable prosthetic blood vessels, as well as anti-adhesive materials and wound dressings.EFFECT: provision of material adhesive properties, optimal for cell proliferation, strength and elasticity, comparable to those of the native tissues of the body or approaching them, as well as homogeneity of the material surface morphology in the absence of defects, due to the possibility of controlled combination and distribution of nano- and microfibers with different adhesion properties and strength characteristics.15 cl, 18 dwg, 1 tbl, 6 ex
Production method of metal oxides nanocapsules in carrageenan // 2622982
FIELD: nanotechnology.SUBSTANCE: metal oxides are selected from aluminium oxide, copper oxide(I), copper oxide (II), manganese oxide (IV), titanium oxide (IV), carrageenan is used as the shell. During the method execution 1 g of the metal oxide is slowly added to the 3 grams carrageenan suspension in petroleum ether in the presence of 0.01 g of the preparation E472c as the surfactant with stirring at 1200 rpm, wherein the core to shell weight ratio is 1: 3 when recalculated to dry matter, then 5 ml of acetone is added as the precipitator, the resulting suspension is filtered off and dried at room temperature.EFFECT: nanocapsules production process simplification and acceleration, reduction of losses during the nanocapsules production.3 dwg, 6 ex
ethod for producing nanocapules of betulin in gellan gum // 2622750
FIELD: nanotechnology.SUBSTANCE: method is characterized in that 100 mg of betulin powder is slowly added to a suspension of 100 mg or 300 mg of gellan gum in butanol in the presence of 0.01 g of E472c with stirring at 1300 rpm, then 3 ml of hexane are added, the resulting suspension is filtered and dried at room temperature.EFFECT: simplification and acceleration of betulin nanocapsule production, weight yield increase.1 dwg, 3 ex
Photo-catalytic coating of protective rubber-and-canvas material // 2622439
FIELD: chemistry.SUBSTANCE: photo-catalytic coating of a protective rubber-fabric material used for the manufacture of personal protective equipment, shelters for military equipment, awnings for trucks, awnings, tents, obtained from a polymer composition based on high-molecular-weight methyl vinyl silicone "СКТВщ" and fillers - aluminium hydroxide, modified with vinylsilane, and aerosil grade A-300 with the following ratio of components by wt %: high molecular weight methylvinylsiloxane "СКТВщ" rubber 100, aluminium hydroxide modified with vinylsilane 80-120, aerosil grade A-300 20-40, or a polymer composition based on polyurethane rubber "СКУ-8 ТБ" and catalyst - polyisocyanate grade B (PIC) at the following ratio of components by wt %: Polyurethane rubber "СКУ-8 ТБ" 100, polyisocyanate grade B (PIC) 0.18-0.22, or a polymer composition based on fluorine rubber "СКФ-26" and fluoroplastic F-42 with the following ratio of components in parts by weight: fluororubber "СКФ-26" 100, fluoropolymer F-42 40-42, wherein the polymer composition contains nano-sized titanium dioxide at a ratio, by wt %, nanosized titanium dioxide: polymer composition = (1:2)-(1:4).EFFECT: preparation of a photo-catalytic coating of a protective rubber-and-canvas material having the effect of photo-catalytic decomposition of toxic chemicals.1 tbl
ethod of n-alkylation of cyclic amines // 2622296
FIELD: chemistry.SUBSTANCE: invention relates to a process of alkylation of cyclic amines with nitriles involving the reaction of a cyclic amine with a nitrile using molecular hydrogen as a reducing agent in the presence of nickel nanoparticles upon heating. As a catalyst, nickel nanoparticles immobilized on activated carbon are used, the reactants are fed directly to the catalyst by two streams, the first of which is hydrogen supplied at a flow rate of 6,000 liters/(kgCat⋅h), and the second - a mixture of nitrile and amine, taken in a molar ratio of 1:2, supplied at a rate of 3.6 liters/(kgCat⋅h), and the reaction is carried out at a temperature of 120-150°C.EFFECT: simplification of the process of alkylating cyclic amines and increasing the yield of the target products.6 ex

ethod for the production of metal oxides nanocapsule // 2622011
FIELD: nanotechnology.SUBSTANCE: metal oxides are selected from zinc oxide, copper oxide (I), copper oxide (II), alumina, manganese oxide (IV), titanium oxide (IV), while implementing the method, 1 g of metal oxide is slowly added to suspension of 3 grams of sodium alginate in petroleum ether in the presence of 0.01 g of preparation E472c as a surface-active agent while stirring at 1200 rpm, and core:shell mixing ratio on a dry basis is 1:3, then 5 ml of carbon tetrachloride are added, the resulting suspension is filtered and dried at room temperature.EFFECT: nanocapsules production process simplification and acceleration, reduction of losses in nanocapsules production.5 dwg, 7 ex
Catalyst of asymmetrical hydrogenation of dehydroamino acid and the method of its production // 2621727
FIELD: chemistry.SUBSTANCE: invention relates to a dispersion of palladium nanodimensional particles modified with (-)-cinchonidine, in methanol or a methanol-toluene mixture as a catalyst for asymmetric hydrogenation of double C=C bonds in unsaturated dehydroamino acids. The invention also relates to a process for the preparation of a dispersion of palladium nanodimensional particles modified with (-)-cinchonidine in methanol or a methanol-toluene mixture which comprises the reduction of palladium from a solution of the bis-acetylacetonate salt in a modifier-containing solvent at a molar ratio of the modifier to palladium 0.5-6.0.EFFECT: use of a catalyst in the hydrogenation of N-acetyl α-amidocinnamic acid allows to obtain up to 85 percent excess of the enantiomer of N-acetyl phenylalanine.2 cl, 3 dwg, 2 tbl, 12 ex
Catalyst for processes of high-temperature oxidation of co // 2621350
FIELD: chemistry.SUBSTANCE: invention can be used to remove CO generated in the regeneration processes of catalytic cracking catalysts occurring at temperatures of 600÷700°C. The catalyst was prepared on the basis of platinum group metal nanoparticles deposited on a solid support by laser electrodispersion to provide an amorphous nanoparticle structure of at least 90% nanoparticles in the range of 1.5-3.0 nm and the amount of platinum group metal no more than 0.005 wt %.EFFECT: catalyst has an increased specific activity in the process of high-temperature oxidation of CO with a reduced content of an expensive platinum group metal in it.3 cl, 1 tbl, 3 dwg, 1 ex
ethod for liposomes obtaining // 2621145
FIELD: biotechnology.SUBSTANCE: invention is a method for liposomes obtaining and is characterized by evaporation of a 1% solution of lecithin in ethyl alcohol in a rotary IKA RV10 control evaporator at a water bath temperature of 60°C, resulting in lipid film formation on the evaporation flask wall, then a centimolar Sodium phosphate buffer pH 7.4 was added in a volume equal to the volume of the lecithin solution in ethyl alcohol, stirred for 1 minute, then the resulting solution was sonicated for 15 minutes.EFFECT: method allows to obtain a monodisperse homogeneous system with a particle size of 59,9 to 106,2 nm.2 tbl

Carbon nanotube fiber with a low specific resistivity // 2621102
FIELD: chemistry.SUBSTANCE: fibers are prepared by wet spinning, comprising the steps of feeding a spinning solution containing carbon nanotubes to a spinneret, spinning solution extruding through at least one spinning orifice in the spinneret to form the spun carbon nanotube fibers, spun carbon nanotube fibers coagulating in a coagulation medium to form coagulated carbon nanotube fibers, where the carbon nanotube fibers are drawn with a draw ratio greater than 1.0, and where the carbon nanotubes have a length of at least 0.5 microns.EFFECT: invention provides carbon nanotube fibers with a resistance below 120 microO⋅cm, high elasticity modulus.18 cl, 2 dwg, 1 tbl, 7 ex

ethod of forming coloured decorative coating by anodisation // 2620801
FIELD: chemistry.SUBSTANCE: method of obtaining a decorative coating with a changing colour during visual angle variation consists in the formation of one-dimensional photonic crystal with photonic bandgap in the visible range by anodising the surface of a valve metal or its alloy containing not less than 50% of valve metal at a cyclically varying parameters: current and voltage, wherein each cycle consists of two stages: anodization is carried out at the first stage at current stabilization in the range of 0.1 to 50 mA /cm2 for a time ensuring charge flow from 0.05 to 5 C/cm2; anodization is carried out at the second stage at voltage stabilization, increasing it from the voltage value at the end of the first stage to a value lying in the range from 10 to 200 V, with a decreasing voltage rise rate from 5 V/s to 0 V/s, and is held at this value for a time ensuring charge flow from 0.05 to 5 C/cm2, ensuring more than 1.4 ratio ofmaximal voltage at the second stage to minimal voltage at the first stage, wherein metal surface serves as anode during production of the decorative coating, and inert material is used as cathode, wherein anodisation charge is reduced by 0.01-10% at the first and the second stages at every next anodisation cycle, which amount lies in the range from 20 to 300.EFFECT: invention allows to obtain coloured decorative coatings of high quality using simple and reproducible method characterized by safety and environmental friendliness due to elimination of toxic substances from the technology.9 cl, 10 dwg, 2 tbl, 5 ex
ethod of producing the magnetite // 2620432
FIELD: chemistry.SUBSTANCE: method for obtaining magnetite involves precipitation of iron (II) hydroxide from FeSO4 sulfate and its oxidation by nitrate ions to magnetite Fe3O4 while thermostating. Thermostating is carried out for 0.083-24 hours. Precipitation is carried out at a temperature of 10-22°C, and oxidation at 37-40°C.EFFECT: invention makes it possible to obtain magnetite nanoparticles with an average size of 42 to 81 nm and a narrow size distribution.1 tbl, 4 ex
ethod of producing water dispersion of nanocrystalline cellulose // 2620429
FIELD: chemistry.SUBSTANCE: process performs the controlled destruction of cellulosic raw materials in a mixture of phosphotungstic acid, acetic acid and hydrogen peroxide, with phosphotungstic acid taken in the amount of 5÷8% of mole relative to the anhydroglucose unit of cellulose, hydrogen peroxide is added in an amount of no more than 0.5% of the volume of the mixture. The desired product is obtained as an aqueous dispersion of NFC with particle sizes of 100-300 nm and a diameter of 20-35 nm, with a crystallinity index above 0.9. Cellulose powder produced on the basis of plant material, including cellulose, isolated from coniferous or hardwood, as well as from flax and cotton, is used as the starting cellulosic raw material.EFFECT: reducing the cost of obtaining the desired product in the form of an aqueous dispersion of NFC, reducing the duration of the regulated destruction of cellulose, obtaining the geometric dimensions of nanoparticles at least in one dimension less than 100 nm, providing a wide range of applications.4 cl, 1 dwg, 9 ex
ethod for contactless treatment of diamonds surface // 2620392
FIELD: chemistry.SUBSTANCE: method for contactless treatment of the diamond surface includes heating the diamond surface to a temperature just below the diamond graphitization temperature, with the subsequent contactless impact on a local diamond surface area with a point source of energy by means of which the local temperature of the diamond surface is raised above the graphitization temperature.EFFECT: method allows to obtain a diamond the surface of which will have a nanoscale relief that provides the extension of the diamond application functionalities, while increasing the process efficiency and reducing power consumption for its treatment.3 ex
ethod of producing light-fast enamels and paints // 2620386
FIELD: chemistry.SUBSTANCE: invention relates to white enamel and paints, including temperature-control coatings. Described is a method of producing light-fast enamel and paints, involving mixing one of pigments, film-forming agent, filler, solvent, dispersion in ball mills or magnetic mixers to obtain a homogeneous paste-like mass, addition of one ingredient which a nanoparticle in an amount of not more than 30 wt%, in which ingredients are mixed in predetermined proportions, dispersion is carried out at a given time at T < 90 °C, wherein pigments are selected from a group consisting of ZnO, TiO2, SiO2, ZrO2, SrO, Al2O3, Y2O3, MgAl2O4, Zn2TiO4, BaTiO3, and nanoparticles are selected from a group consisting of ZnO, TiO2, SiO2, ZrO2, SrO, Al2O3, Y2O3.EFFECT: obtaining modified enamels or paints with high light resistance.1 cl, 1 tbl, 6 ex
ethod of magnetite nanoparticle coating with gold layer // 2620166
FIELD: metallurgy.SUBSTANCE: invention refers to methods of obtaining magnetite (Fe2O4) nanoparticles coated with a layer of gold, that can be used as a contrasting agent for magnetic resonance tomography, magnetic separation, targeted drug delivery, etc. The method of magnetite nanoparticle coating with a layer of gold involves sequential injection of aqueous solution of sodium citrate, aqueous solution of chloroauric acid and aqueous solution of hydroxylamine hydrochloride into aqueous solution of magnetite nanoparticles, where magnetite nanoparticles are treated additionally with 1-3M aqueous solution of chloric acid for 1-30 minutes before injection of aqueous solution of sodium citrate.EFFECT: output of gold-coated magnetite nanoparticles increased by 1,37-1,47 times, possible obtainment of modified nanoparticles with more narrow size distribution.4 ex
ethod of manufacture of suspension for 2d printing of dielectric layers based on fluorographen // 2620123
FIELD: physics.SUBSTANCE: first, a suspension of graphene with a concentration of 0.01-10 mg/ml is prepared. The resulting graphene suspension is fluorinated at a temperature of 60-80°C in a solution of hydrofluoric acid with a concentration of 1-15 vol. %, ensuring the achievement of the required degree of fluorination, the flow during fluorination of the processes of stratification and fragmentation of the particles of the suspension, reaching the lateral size and the thickness of the resulting fluorographen particles corresponding to the particles in the ink. In the fluorination process, ultrasonic treatment and/or centrifugation can also be performed. Then it is held for a sufficient time to acquire dielectric properties.EFFECT: invention makes it possible to shorten the manufacturing time of a fluorographen suspension for 2D printing of dielectric layers up to 20 days or less.13 cl, 1 dwg, 7 ex
Production method of polyimide composite film coating reinforced by nanostructured silicon carbide (versions) // 2620122
FIELD: nanotechnology.SUBSTANCE: invention concerns the technology of nanocomposite production based on nanostructured silicon carbide with the polyimide matrix, which can be applied in various engineering fields, in particular, in the manufacturing of structural materials, used in the aviation and space industry, in the rocket engineering, electrical engineering, in cable industry and microelectronics. The essence of the invention consists in the preparation of the composite film coating, based on the polyimide matrix, reinforced with nanostructured silicon carbide, using the nanostructured unmodified or modified silicon carbide as the reinforcing element, which is introduced in the content with amount of 0.2-10 wt % from the resulting composite weight. The silicon carbide is introduced in the form of suspension in dry, polar, organic solvent. The modified silicon carbide is obtained by silicon carbide suspension processing at 100-150°C with chlorosilane. The silicon carbide suspension is stirred by means of ultrasound in the inert gas flow with the diamine, after which it is cooled up to 1-15°C and the dianhydride amount equimolar with respect to the diamine is added with stirring to the resulting reaction mass. The reaction mass is subjected to ultrasonic stirring, the resulting dispersion is applied to the substrate and dried by stepwise heating according to the specified scheme with following cooling.EFFECT: reduction of the energy intensity and the process duration.7 cl, 1 tbl, ex 4
Two-step process of obtaining the propionic aldehyde // 2619951
FIELD: chemistry.SUBSTANCE: method includes the step of hydroformylating ethylene with carbon monoxide at elevated temperature and pressure in the presence of a metal rhodium catalyst on a carrier. Prior to the hydroformylation step, a hydrogenation stage of carbon dioxide in the synthesis gas is preliminarily carried out in the presence of a catalyst containing metallic cobalt on a carrier in the form of an organometallic MIL-53 (Al) frame structure obtained in the course of microwave activated synthesis, and the process for producing propionaldehyde is carried out in flow two-way reactor at a pressure of 20-40 atm by contacting a stationary catalyst bed located on the upper shelf of the reactor and heated to a temperature of 500°C, with feed mixture H2 and CO2 at a gas feed rate of 500-1000 h-1 followed by mixing of the formed and heated to a temperature of 500-520°C of reaction gases containing a mixture of CO-H2-CO2, with cold ethylene, fed into the inter-bed space, and the resulting gas mixture at a ratio of CO:H2:C2H4=1:(1÷2):1 is fed to the lower shelf of the reactor and contacted at a temperature of 170-230°C with a hydroformylation catalyst present therein, presented by rhodium in the form of the organometallic framework structure MIL-53 (Al), obtained during autogenous hydrothermal synthesis.EFFECT: method allows to increase the selectivity of the formation of the target product, and the yield, ensuring the utilisation of greenhouse gas.3 cl, 2 dwg, 1 tbl, 8 ex
 
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