Method of producing nanocapsules of gibberellic acid

FIELD: chemistry.

SUBSTANCE: invention provides a method of encapsulating a preparation via a nonsolvent deposition method, characterised by that the core of the nanocapsules used is gibberellic acid, the envelope used is carrageenan, which is deposited from a suspension in benzene by adding tetrachloromethane as a nonsolvent, followed by drying at room temperature.

EFFECT: simpler and faster process of producing nanocapsules and reducing losses when producing nanocapsules.

3 ex

 



 

Same patents:

FIELD: electricity.

SUBSTANCE: metal-dielectric structure and method of its manufacturing are related to electronic industry and electronic engineering and may be used both in modern energy-saving systems and components being an integral part of modern processors, in particular for development of microsized and nanosized electromechanical systems. The metal-dielectric structure consists of dielectric and conducting layers made as an assembly of capillaries filled with metals to the required length, at that conducting layers are etched on selective basis at different butt ends and metalised. The conducting layers are represented by two different types of electroconductive materials etched on selective basis at different butt ends, at that the conductive layers may be made of semiconductor materials, conducting glass, carbon nanoparticles and nanotubes while the dielectric layers may be made of optical and electron-tube glass, polymer materials. In cross-section the dielectric and conducting layers may be made as concentric circles. The manufacturing method for the above metal-dielectric structure includes assembly, overstretching, stacking to the unit, at that upon multiple overstretching vacuum filling with conducting materials is performed, and butt ends are etched on selective basis with different chemical composites and then they are metalised.

EFFECT: invention allows increasing capacitance and breakdown voltage for capacitors.

5 cl, 7 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to pressure sensitive adhesives, suitable for use on a wide variety of substrates, including both high surface energy and low surface energy substrates. Pressure sensitive adhesives comprise an acrylate polymer and surface-modified nanoparticles. The surface-modified nanoparticles comprise a nanoparticle comprising a silica surface and surface modifying groups, covalently bonded to the silica surface of the nanoparticle. At least one surface modifying group is a polymeric silane surface modifying group. At least one surface modifying group is a non-polymeric silane surface modifying group.

EFFECT: disclosure also provides a method of preparing pressure sensitive adhesives, including exposing them to UVA and UVC radiation.

21 cl, 2 dwg, 12 tbl

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention refers to pharmaceutical industry, namely to selenium nanocomposites of natural hepatotrophic galactose-containing polysaccharide matrixes, representing water-soluble orange-red powders containing zerovalent selenium (Se0) nanoparticles sized 1-100 nm in the quantitative content of 0.5 - 60 wt %, possessing antioxidant activity for treating and preventing redox-related pathologies, particularly for treating toxic liver damage, to a method for producing and to an antioxidant agent containing the above nanocomposites.

EFFECT: invention provides the targeted agent delivery to liver cells, as well as higher agent accessibility and lower toxic action of selenium.

7 cl, 11 ex, 4 tbl

FIELD: medicine.

SUBSTANCE: method is implemented as follows: preparing a mixture 1 by adding 0.5M aqueous solution of selenious acid 250 mcl in PEG 400 8 ml, mixing thoroughly in a magnetic mixture at min. 750 rpm with pH of the given mixture 7.55; that is followed by preparing a mixture 2 by adding 0.5M aqueous solution of hydrazine hydrochloride 250 mcl in PEG 400 8 ml, mixing thoroughly in a magnetic mixture at min. 750 rpm with pH of the given mixture 0.68. The mixture 1 is added to the mixture 2 by mixing thoroughly drop by drop. The prepared solution is dialysed against distilled water with removing PEG 400 and hydrazine hydrochloride; the surplus water is distilled off in a rotary evaporator at 60 rpm and 70°C. The prepared solution is added with a low-molecular compound specified in a group of: gentamicin, hexamethylene tetramine, methionine, cephalexin, indole-3-carbinol; pH is reduced to 7.2-7.4. The components are mixed in an amount to provide their content in the agent, wt %: biologically active low-molecular compound 0.001-5.0; selenium 0.0001-1.0; water up to 100.

EFFECT: simplifying the technology.

2 tbl, 3 ex, 1 dwg

FIELD: medicine.

SUBSTANCE: invention refers to medicine and describes a method for producing glucosamine sulphate nanocapsules by non-solvent addition, wherein glucosamine sulphate is added in small amounts to a carrageenan suspension used as a nanocapsule shell in butanol, containing E472c preparation 0.01 g as a surfactant; the produced mixture is agitated and added with the non-solvent hexane 6 ml, filtered, washed in hexane and dried.

EFFECT: invention provides simplifying and accelerating the process of nanoencapsulation in carrageenan and higher weight yield.

2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to field of obtaining nanocomposite coatings and can be used in creation of optic microelectronic devices and materials with increased corrosion resistance and wear resistance. Method of obtaining two-phase nanocomposite coating, consisting of titanium carbide nanoclusters, distributed in amorphous hydrocarbon matrix, on products from hard alloys, includes application of adhesive titanium or chromium sublayer, magnetron sputtering of titanium target in gas mixture of acetylene and argon under pressure 0.01-1 Pa and precipitation of dispersed particles of target and carbon-containing radicals on product surface in combination with bombardment of surface with ions, accelerated by bias voltage, with product surface being subjected to purification with argon ions from plasma, generated by electronic beam, before application of adhesive sublayer, and gas mixture being activated in the process of coating application by impact with beam of electrons with energy 100 eV.

EFFECT: invention is aimed at increase of coating adhesion and micro-hardness of obtained products, as well as at provision of high efficiency of application of acetylene in the process of coating application.

1 ex, 2 dwg

FIELD: chemistry.

SUBSTANCE: catalyst contains carrier from porous zeolite KL and binding agent and catalytically active substance - platinum. Carrier additionally contains tin tetrachloride pentahydrate nanopowder, and as binding agent - mixture of gibbsite and rutile powders in equal proportions, with particle size of each not exceeding 40 mcm. Ratio of ingredients is in the following range, wt %: platinum - 0.3-0.8, mixture of gibbsite and rutile powders - 25-70, zeolite KL - 29.12-74.69, tin tetrachloride pentahydrate - 0.01-0.08. Claimed catalyst is characterised by high activity in reactions of aromatisation of synthetic hydrocarbons.

EFFECT: invention also relates to method of obtaining such catalyst.

2 cl, 1 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to field of nanotechnology, in particular to plant growing, and deals with method of obtaining nanocapsules of 6-aminobenzylpurine. Method is characterised by the fact that 6-aminobenzylpurine is used as core and sodium alginate is used as envelope of nanocapsules, obtained by addition of E472c as surfactant to sodium alginate in butanol, portioned addition of 6-aminobenzylpurine into suspension of sodium alginate in butanol and further drop-by-drop introduction of precipitating agent-petroleum ether after formation of separate solid phase in suspension.

EFFECT: simplification and acceleration of process of obtaining nanoparticles and increased output by weight.

3 ex

FIELD: chemistry.

SUBSTANCE: method includes crushing and fractioning of initial material, delignification of initial raw material by alkaline hydration and alkaline pulping with further washings. After that, two-stage acidic hydrolysis with intermediate neutralisation and three washings is performed. Then, three-stage bleaching with hydrogen peroxide H2O2 with three washings is carried out. In second washing finely dispersed ozone is supplied. Obtained product is additionally subjected to homogenisation and drying. Invention makes it possible to obtain final product with virtually absolute absence of lignin, with high organoleptic and physical and chemical properties from lignin-containing initial material.

EFFECT: method does not require application of expensive equipment, does not involve application of highly toxic reagents, includes simple technological operations, is characterised by production scalability.

3 cl, 3 dwg, 1 ex

FIELD: medicine.

SUBSTANCE: invention describes a method for producing Sel-Plex nanocapsules possessing the supramolecular properties by non-solvent addition, characterised by the fact that Sel-Plex is dissolved in dimethyl sulphoxide; the prepared mixture is dispersed in xanthum gum solution used as a nanocapsule shell, in butanol, in the presence of E472c preparation while stirring at 1000 cycles per second; the mixture is added with the precipitator benzol, filtered and dried at room temperature.

EFFECT: simplifying and accelerating the process of nanoencapsulation and ensuring higher weight yield.

4 ex, 12 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to nanotechnology, particularly a method of producing aspirin nanocapsules in a carrageenan envelope. The disclosed method includes preparing an aspirin suspension in benzene; dispersing the obtained mixture into a carrageenan suspension in butanol in the presence of an E472c preparation while mixing at 1000 rps; adding tetrachloromethane; filtering the obtained nanocapsule suspension and drying at room temperature.

EFFECT: method provides a simpler and faster process of producing nanocapsules and increases mass output.

1 dwg, 4 ex

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention relates to field of bioencapsulation and represents method of obtaining microcapsules by method of precipitation with non-solvent, which consists in the fact that water-soluble medication of cephalosporin group, applied as core of microcapsules, and E472c as surface-active substance, are added to water solution of human leukocyte interferon in α- or β- form, applied as envelope of microcapsules, mixture is mixed, after dissolution of components carbinol is added as first precipitator, with the following addition of acetone as second precipitator, with ratio of carbinol to acetone constituting 1:5, obtained suspension of microcapsules is filtered, washed and dried at 25°C.

EFFECT: invention ensures simplification and acceleration of the process of obtaining microcapsules and reduction of loss (increase of output by weight).

4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to microencapsulation, in particular, to microencapsulation of antioxidants. Carrageenan was used for the capsule shells, an antioxidant was selected from the group of: vitamins A, C, E, Q10, eleuterococcus, green tea extract, ginseng extract; wherein an antioxidant product portion was dissolved in dimethylsulfoxide, and the mixture was dispersed in a solution of carrageenan in ethanol in the presence of the preparation E472c under stirring at the rate of 1300 rev/s, the antioxidant/carrageenan weight ratio was 1:3, after which a mixture of benzene and water taken in volume ratio of 2:1 was added to the above mix, the resulted suspension was filtered and dried at a room temperature.

EFFECT: simplified and fast process of antioxidant product microencapsulation in carrageenan.

1 ex

FIELD: nanotechnology.

SUBSTANCE: suspension of aspirin in benzene is produced. The resulting mixture is dispersed into suspension of sodium alginate in butanol in the presence of the preparation E472s when stirring at 1000 rpm/sec. Then chloroform is poured, the resulting suspension of nanocapsules is filtered and dried at room temperature.

EFFECT: simplification and acceleration of the process of production of the nanocapsules, and increase in the yield by weight.

1 dwg, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to microencapsulation, in particular, to microencapsulation of flavours. Carrageenan was used for the capsules, wherein an aromatic product portion was dissolved in dimethylsulfoxide, and the mixture was dispersed in a solution of carrageenan in ethanol in the presence of the preparation E472c, under stirring at the rate of 1300 rev/s, the aromatic product/carrageenan weight ratio was 1:3 respectively, after which mixture of butanol and distilled water taken in volume ratio 3:1 respectively was added, the resulted microcapsule suspension was filtered and dried, the process of production of "cherry" or "tomato" flavour microcapsules was carried out at 25°C.

EFFECT: simplified and fast process of aromatic product microencapsulation, with the reduced amount of waste.

3 ex, 7 dwg

FIELD: food industry.

SUBSTANCE: organoleptical properties improvement is achieved by the fish oil microcapsules production method characterised by obtainment of an oil-in-water emulsion by way of mixing fish oil and an encapsulation ingredient in water; the components are taken at a ratio 30-35 and 25-30 wt %, water - balance; the method additionally involves homogenisation and dispersion of the obtained emulsion in an ultrasonic field and microemulsion subsequent spray drying; ultrasonic dispersion is carried out with insonification frequency equal to 28 kHz and intensity equal to 40 W/cm2; spray drying is carried out with a parallel hot air flow with the temperature at the inlet and outlet equal to 160-180°C respectively.

EFFECT: simplification and enhancement of microencapsulation processes efficiency during production of deodorised and encapsulated fat-soluble food products, in particular, improvement of organoleptic properties of fish oils used for food products enrichment.

4 cl, 6 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to the encapsulation of active ingredients and to processing textile materials. Claimed are: a method of processing textile materials, containing microcapsules of active ingredients, fibres and/or textile materials, obtained from the said method, and their cosmetic or pharmaceutical application and/or their application as a repellent.

EFFECT: claimed invention makes it possible to increase the active ingredient stability for an acceptable number of washings.

16 cl, 6 dwg

FIELD: medicine, pharmaceutics.

SUBSTANCE: invention refers to microencapsulation of water-soluble preparations, particularly to encapsulation of common jujube possessing the therapeutic properties. The method for common jujube encapsulation involves dispersing common jujube powder suspension in isopropanol in the presence of the preparation E472 and precipitating with carbon tetrachloride as a non-solvent. There are produced microcapsules containing common jujube as a core in xanthane gum as a shell in core:shell ratio 1:3, 1:1 and 3:1 with 100% yield.

EFFECT: invention provides simplifying and accelerating the microencapsulation process and higher weight yield.

3 ex

FIELD: food industry.

SUBSTANCE: invention relates to food industry. The method for production of dry girasol extract in pectin envisages usage of a microcapsule shell, represented by low-etherified and high-etherified apple and citrus pectins, and a nucleus, represented by dry girasol extract. The microcapsules are produced by way of the pectin mixture stirring in benzol, with the surfactant represented by preparation E472c, in a magnetic stirrer. Then dry girasol extract is added into the mixture which is deposited with acetonitrile. Then the produced microcapsule suspension is filtered, washed with acetonitrile and dried.

EFFECT: invention allows to simplify and accelerate the microcapsules production process and increase weight yield.

7 ex

FIELD: chemistry.

SUBSTANCE: invention relates to field of encapsulation, in particular to method of obtaining microcapsules of vitamins A, C, E or Q10 in coating from highly etherified or low etherified apple or citrus pectin. In accordance with method by invention preparation E472c is added to suspension of highly etherified or low etherified apple or citrus pectin in ethanol and mixed. After that, suspension of vitamin in dimethylsulphoxide is added to suspension of pectin in ethanol, with further addition of benzene and distilled water. Obtained suspension of microcapsules is filtered and dried. Process of obtaining microcapsules is realised at 25°C for 15 min.

EFFECT: invention provides simplification and acceleration of process of obtaining microcapsules, reduction of loss in the process of their obtaining (increase of output by weight).

16 ex

FIELD: chemistry.

SUBSTANCE: invention relates to agriculture. Agronomical composition includes (a) biocides and (b) products of alkoxylation of esters of di- or oligosaccharides.

EFFECT: invention makes it possible to increase composition stability.

11 cl, 4 tbl, 6 ex, 2 dwg

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