RussianPatents.com
|
Oil-well light weight portlandcement Oil-well light weight portlandcement contains oil-well portlandcement, a modifying agent in the form of water-soluble polymer and a light-weight filler. At that the water-soluble polymer contains an anionic polyacrylamide with molecular mass of 18-20 mln. Dalton and hydrolysis degree of 20-25%, acrylic acid copolymer with 2-acrylamido-2-methylpropane sulphonic acid, and aluminosilicate hollow microspheres or expanded perlite is used as a light-weight filler with the following ratio of components, wt %: oil-well portlandcement 70-85; aluminosilicate hollow microspheres 19.6-29.6 or expanded perlite 14.6-24.6, anionic polyacrylamide 0.1-0.2; acrylic acid copolymer with 2-acrylamido-2-methylpropane sulphonic acid 0.1-0.2. |
|
Claimed invention relates to a method of obtaining a (meth)akrylate monomer. Described is the method of obtaining the (meth)akrylate monomer of the general formula (I): in which R1 stands for hydrogen or a methyl group, X stands for oxygen, R2 stands for a residue of an alkyl group with 3-6 carbon atoms and one aldehyde group, characterised by the fact that an initial product of formula (III): in which R1 stands for hydrogen or a methyl group, X stands for oxygen and R5 stands for an unsaturated alkyl residue with, at least, one double bond and 3-6 carbon atoms, is subjected to interaction with a carbon monoxide and hydrogen in the presence of a catalyst, which represents a complex, containing rhodium, iridium, palladium and/or cobalt and a phosphorus-containing compound as a ligand, with a ratio of a metal to the ligand preferably constituting from 1:1 to 1:1000, especially preferably from 1:2 to 1:200. |
|
Scale for use in concealed protection Invention can be used to protect the product from counterfeiting. The method of forming a plurality of inorganic marking pigment scales comprises creation of a polymeric substrate for application of a removable coating, application of a removable coating on the polymeric substrate. After that, the embossing on the first part of the polymer substrate of the pattern of the first frame and the embossing on the second part of the pattern substrate of the second frame, different from the first pattern frame, is carried out before or after application of the removable coating on the polymeric substrate. The removable coating is removed from the polymer substrate and is processed to the mixture of scales that comprises a first plurality of scales substantially uniform in shape with the first frame pattern. To produce multiple of moulded inorganic marking pigment scales, the frame pattern of selected shape and character in the frame is applied to the polymeric substrate. Then at least one layer of an inorganic thin film is precipitated on the polymeric substrate and the layer of inorganic thin mixture is converted into a scales mixture, at that the scales mixture comprises scales having a selected shape and character. |
|
Abrasive grain based on zirconia alumina Invention relates to an abrasive grain based on melted in an electric arc furnace Al2O3 and ZrO2 with content of Al2O3 from 52 to 62 wt % and ZrO2 from 35 to 45 wt %. A high-temperature phase of zirconium oxide is stabilised with a combination of reduced compounds of Ti and yttrium oxide. |
|
Anti-glaze composition (versions) and method of its manufacturing Each version of a composition contains a chemical component for snow and ice melting and an abrasive component for adhesion of a vehicle wheels and pedestrians' shoes to the road. The abrasive component of the composition is composed of dosed by weight dry groups of fractions of sand, granite chips or marble chips in their different combinations and proportions. |
|
Fireproof decorative-finishing material and method of obtaining thereof Invention relates to elaboration of a fireproof decorative-finishing material - artificial leather, obtained by coagulation of a solution based on a polyurethane composition. The decorative-finishing material contains a woven layer, preliminarily impregnated with an aqueous silicone emulsion and dried to the weight gain of the latter of 3.0-8.5 wt %, on which, after that, a primer and a front layer are successively applied with intermediate drying. The primer layer is made of a composition, which contains 25% solution of polyurethane "Vitur 0512", dimethyl formamide with a viscosity of 120-170 P and a dry residue 18.0-22.0 wt % for the primer layer. The front layer is made of a composition, containing 15% solution of polyurethane "Vitur 0512", a surface-active substance OP-10, di-(2-ethylhexyl)-phthalate, ammonium polyphosphate, dimethylformamide with a viscosity of 205-210 P and a dry residue 26.0-27.0 wt % for the front layer. Front layers are coagulated in a coagulation bath with a composition of 30.0 wt % of dimethylformamide and 70.0 wt % of water at a temperature of 50°C for 20 min, washed in a bath with flowing water until content of dimethylformamide is less than 3.0%, dried and finished with a polyurethane composition, containing 25% solution of polyurethane "Vitur 0512", the surface-active substance OP-10, di-(2-ethylhexyl)-phthalate, ammonium polyphosphate, dimethylformamide with a viscosity of 84 P and a dry residue 24.5 wt %. After that, the half-finished product is processed in a padding bath with compression rolls at a temperature of 60°C with an aqueous solution of a mixture of polyphosphoric acids and urea with a ratio of nitrogen and phosphorus respectively 1.0:1.56-1.80 and drying for 4 min at a temperature of 120°C until the weight gain is 20.0-25.0 wt %. The obtained finished material has a ratio of layers by weight, equal: woven layer, including 3.0-8.5 wt % of the silicone emulsion: polyurethane layers: the said mixture of polyphosphoric acids and urea respectively 1.0:0.85-0.93:0.37-0.48. |
|
Material for proppant and method of its obtaining Method of obtaining a material for a proppant includes obtaining a mixture of oligocyclopentadienes with a content of trimers and tetramers of 5-60 wt % by heating dicyclopentadiene to a temperature of 150-220°C and stand at the said temperature for 15-360 min, cooling of the mixture to 20-50°C, successive introduction into the obtained mixture of oligocyclopentadienes of the following components: at least, one of polymeric stabilisers, selected from the given group, at least, one of radical initiators, selected from the given group, at least, one of methacrylates, selected from the given group, and a catalyst - a compound of the given general formula. The components of a polymeric matrix are in the following quantities, wt %: polymeric stabiliser or mixture of stabilisers 0.1-3, radical initiator or mixture of initiators 0.1-4, methacrylate or mixture of methacrylates 0.3-30, catalyst 0.001-0.02, mixture of oligocyclopentadienes - the remaining part, the obtained polymeric matrix is heated to a temperature of 50-340°C and stood at the given temperature for 1-360 min, after that, cooled to room temperature. The material for the proppant is obtained by the claimed method. |
|
Polymeric proppant and method of its obtaining Method of a proppant obtaining includes obtaining a mixture of oligocyclopentadienes by heating dicyclopentadiene to a temperature of 150-220°C and stand at the said temperature for 15-360 min, cooling of mixtures to 20-50°C, successive introduction into the obtained mixture of oligocyclopentadienes of the following components: at least, one of polymer stabilisers, selected from the given group, at least, one of radical initiators, selected from the given compounds, or their mixture, and catalysts - a compound of the given formula, with components of a polymer matrix being present in the following quantities, wt %: polymer stabilisers 0.1-3; radical initiators 0.1-4; catalyst 0.001-0.02; mixture of oligocyclopentadienes - the remaining part, the obtained polymer matrix is kept at a temperature of 20-50°C for 1-40 minutes, after that, in the form of a laminar stream it is introduced into water preliminarily heated to not less than the temperature of the matrix, which contains SAS from the given group, where a mixture of water with SAS has a viscosity of the polymer matrix, in the process of constant mixing water is heated to 50-100°C, with continuation of mixing for 1-60 min, the formed microspheres are separated from water, heated in a medium of an inert gas to a temperature of 150-340°C and kept in the said medium at the said temperature for 1-360 min. The polymer proppant is obtained by the claimed method. |
|
Invention relates to rock dusting of coal mine surfaces. Proposed process comprises application of stone dust particles processed by cationic and/or zwitter-ion surfactant on coal mine surfaces. Note here that said composition can contain the mix of cation and zwitter-ion surfactant wherein zwitter-ion surfactant fraction can make at least 60% or more, preferably, at least 65% of the mix. Besides, invention covers the liquid composition for processing of stone dust particles and coal mine surface rock dusting and device to this end. |
|
Method of hydraulic breakdown of formation Method suggests deviation of injected operating fluid containing a friction reducer during hydraulic fracturing process. Hydraulic fracturing of the underground formation includes injection of an intermediate liquid with viscosity less than approximately 50 mPa·s at shear rate of 100 s-1 at external conditions. Then proppant suspension is injected with viscosity less than approximately 50 mPa·s at shear rate of 100 s-1 at external conditions. Thickened liquid is injected with viscosity more than approximately 50 mPa·s at shear rate of 100 s-1 at external conditions or thickened liquid with viscosity less than approximately 20 mPa·s upon which it becomes thickened. |
|
Compositions, including protein and cationic polymer, and possessing lower viscosity Invention relates to an adhesive composition as well as to a composite and a method of obtaining the composite, which includes a substrate and the adhesive composition. The adhesive composition includes a protein component, a polymer component with azetidine functional groups and a viscosity-modifying component. The protein is represented by the soya protein. The viscosity-modifying component is represented by a sulfite reducing agent, thiol or their combination. |
|
Separation of excessively sprayed lacquer and separation fluid Invention relates to process and separation fluid for removal of solid particles from excess spraying fluid formed at painting the parts. In compliance with this process, excess spraying fluid is entrapped by airflow and conveyed to separation surface (42a, 42b) washed by separation fluid whereat at least a portion of solid substances gets into separation fluid, diverted by the latter and removed from the fluid by sedimentation. Used is separation fluid containing degumming medium and carrier fluid. Note here that particles of excessively sprayed lacquer are degummed by said medium. |
|
Refrigeration oil and working liquid composition for refrigerator Claimed invention relates to a composition of a working liquid for a refrigerating machine, and it contains oil for refrigerating machines, containing a mixture of at least two esters, selected from a group of esters of at least one multi-atomic alcohol, and a fatty acid with content of C5-C9 fatty acid 50-100% mol, a fluoropropene refrigerant and/or trifluoroiodine methane refrigerant (versions). |
|
Acidising composition for bottomhole formation zone Composition for acid treatment of the bottomhole formation zone includes the following components, wt %: hydrochloric acid 24.9-90.0, agent ITPS-806 A 5.0-7.5, water - the remaining volume. The composition can contain fluorhydric acid regulator in the quantity of 4.0-10.0 wt %. |
|
Delivery of grain material underground Borehole fluid represents a water-based carrier fluid containing first and second hydrophobic grain particles suspended therein, first particles having higher specific weight than second particles while fluid contains gas for wetting of particle surface and bonding them into agglomerates. Proposed method comprises feed of said fluid so that agglomerates of said particles retained by gas are located below the soil. Method of hydraulic fracturing of underground gas-bearing seam comprises feed of said fluid to fracture and forcing it therein so that said agglomerates retained by gas stay in said fracture. |
|
Composition of thermosetting coating powder Invention relates to a thermosetting composition of a coating powder, suitable for hardening at a temperature of 60-130°C. The composition includes a thermal initiation system and a resin system, in which a reaction ability of the thermal initiation system is such that the thermal initiation system ensures gelation time 2.5-1000 minutes at 60°C in butanedyol-dimethacrylate with determination in accordance with DIN 16945 with application of 1 wt % of the thermal initiation system in 99 wt % of butanedyol-dimethacrylate, and in which the quantity of the thermal initiation system is selected in such a way that when the composition of the coating powder is applied on a substrate and hardens at a temperature of 130°C for 20 min, the obtained coating sustains, at least, 50 double steps with abrasion in acetone. The resin system includes resin and a common cross-linking agent, in which resin contains reactionable nonsaturation, and in which the said reactionable nonsaturation represents double carbon-carbon bonds, bound directly to an electron-acceptor group. The common cross-linking agent is selected from a group of acrylates, methacrylates, vinyl esters, vinyl ethers, vinylamides, alkyne ethers, alkyne esters, alkyne amides, alkyne amines, propargyl ethers, propargyl esters, itaconates, enamines and their mixtures. Weight per the double bond in the resin system constitutes 100-1000 g/mol by determination with application of 1H NMR, weight per nonsaturation in the common cross-linking agent constitutes 150-870 g/mol by determination with application of 1H NMR. The composition of the coating powder is a single-component system. Also described is a method of obtaining the coating powder, a method of a substrate coating, the substrate and application of the coating powder composition for coating the thermosensitive substrate. |
|
Fluorine-containing sas and method of obtaining thereof Invention relates to chemical technology of obtaining fluorine-containing surface-active substances, which can be applied in the field of creation anti-friction compositions, varnish-and-paint materials, water repellents for wide spectrum of materials, compositions for anti-corrosion protection of metals, etc. A fluorine-containing surface-active substance based on diglycerides of perfluorocarboxylic acids, selected from a group of carboxylic acids of hexafluoropropylene oxide dimer or trimmer or their mixture is obtained by carrying out a reaction of glycerol etherification with perfluorocarboxylic acids, selected from a group of hexafluoropropylene oxide dimer or trimmer or their mixture, in the presence of a catalyst, selected from the group: sulfuric acid, orthophosphoric acid, chlorosulphonic acid or sulphonated cation-exchange resins, with a temperature of the reaction mixture being 90 - 120°C and a molar ratio of glycerol to perfluorocarboxylic acid equal to 1:(2-2.1). |
|
Invention is used for protection against corrosion of external surfaces of major pipelines, as well as to cover gypsum-fibre, wood chipboards and wood surfaces from the damaging effect of the environment. Waterproof material comprises bitumen-polymer component HL, composite varnish as plasticising agent, mineral fine filler - natural chalk, anticorrosive pigment in the form of aluminium powder and solvent - xylene. |
|
Fireproof rubber mixture contains isoprene and butadiene rubbers, sulphur, sulphenamide C, zinc oxide, magnesium oxide, paraffin, naphtham-2, diaphene FP, technical carbon, N-nitrosodiphenylamine, chloroparaffin, antimony trioxide, aluminium hydroxide. |
|
Humic-mineral reagent is prepared by mixing humified organic raw materials with the solution of hydroxide of alkaline or alkaline-earth metals, followed by extraction. The extraction of humic substances is carried out at 165-220°C and pressure of 1.8-2.5 MPa while simultaneous supplying air at a rate not exceeding 5 litres per minute for 10 kg of raw material for no longer than 3 hours. The resulting reagent comprises humic acids and/or their salts, a mixture of mineral components, comprising ferric oxide, sodium oxide, magnesium oxide, aluminium oxide, calcium oxide, and less than 1.5 wt % impurities. |
|
Laser-sensitive polymer coatings Invention relates to laser-sensitive polymer coatings for recording information with high resolution on hydrophilic and hydrophobic surfaces of substrates of a various chemical nature. A coating is made of a composition, which includes the following components: poly(o-hydroxyamide) as a polymer binding agent, sensitive to laser radiation, nigrosin dye as a laser-sensitive substance, an amide solvent. Poly(o-hydroxyamide) represents the product of polycondensation of isophthalic acid dichloride with 3,3'-dihydroxy-4,4'-diaminodiphenylmethane or isophthalic acid dichloride with mixture of 3,3'-dihydroxy-4,4'-diaminodiphenylmethane with bis-(3-aminopropyl)dimethylsiloxane, taken in a molar ratio from 10.0:1.0 to 1.0:10.0. The coating is obtained by application of the composition directly on a substrate surface without its preliminary dressing. After that, it is subjected to drying at 100-120°C for 15-30 min. |
|
Invention relates to a method of obtaining silicon-dioxide-containing polyol dispersions, used to obtain polyurethane materials. Claimed is the method of obtaining silicate-containing polyols, which includes stages: (i) mixing water silica sol (K) with the average diameter of particles from 1 to 150 nm, content of silicic acid, calculated as SiO2, from 1 to 60 wt % and pH value from 1 to 6 depending on the used content of SiO2 and from 0.1 to 20-fold amount calculated per water of, at least, one organic solvent (L); (ii) mixing the obtained mixture with polyol; (iii) at least, partial distillation of an organic solvent (L) and water; (iv) mixing, at least, with one compound (S), which contains, at least, one at least once alkoxilated silyl group and, at least, one alkyl, cycloalkyl or aryl substituent, which can contain heteroatoms, and the said substituent contains, if necessary, a group, reactionable with respect to alcohol, amine or isocyanate, in an amount from 0.1 to 30 mol % calculated per SiO2 content; (v) if necessary, bringing pH value of silicate-containing polyol to a value of 7 to 12 by addition of a strongly basic compound, and the stage (v) can be realised between stages (iii) and (iv). |
|
Lighting facility based on white light-emitting diodes and excited by pulse current Invention is related to a lighting facility based on white light-emitting diodes and excited by pulse current. The facility includes blue, violet and ultraviolet LED chips packed inside and a luminescent coating using a luminescent material. The luminescent material represents a combination (1) or (2) of the luminescent material A with blue afterglow and of a yellow luminescent material. The yellow luminescent material B is capable of light emission when blue, violet and ultraviolet LED chips and/or the luminescent material A with blue afterglow are excited. The combination (1) represents the following combination: 5% Sr2MgSi2O7:Eu2+,Dy3+ + 15% CaSrS:Bi3+ + 20% Sr4Al14O25:Eu2+,Dy3+ and 15% Sr3SiO5:Eu2+,Dy3+ + 20% Ca2MgSi2O7:Eu2+,Dy3+ + 25% Y3Al5O12:Ce, while the combination (2) is represented in the following way: 35% CaS:Br3+,Na+ and 25% Y2O3·Al2O3·SiO2:Ce·B·Na·P + 10 %CaS:Sm3+ + 15% Y2O2S:Mg,Ti + 5% Sr3SiO5:Eu2+,Dy3+ + 10% Ca2MgSi2O7:Eu2+,Dy3+. At that the lighting facility based on white light-emitting diodes excites the LED chips by pulse current with a frequency of at least 50 Hz. |
|
Method of hydraulic fracturing of well formation Method includes perforation in the formation interval, running in of a pipe string with a packer, setting of the packer, injection of a gelled fracturing fluid to the below-packer zone, filling of the pipe string with a process fluid, determination of the total volume of the gelled fracturing fluid, creation of a hydraulic fracturing pressure in the below-packer zone and flushing of the gelled fracturing fluid with a proppant to the formed fracturing, withhold during the time required for the pressure drop per 70%, the packer releasing and the packer removal with the pipe string from the well. Upon determination of its total volume the gelled fracturing fluid (linear gel) is injected to the well until hydraulic fracturing is formed in the formation, while the remaining volume of the gelled fracturing fluid upon hydraulic fracturing is divided into two parts - a cross-linked gel and a linear gel, cyclic injection of the linear gel at first and then of the cross-linked gel is made with addition of the proppant during 3-5 cycles. At that the linear gel is injected by equal portions with a flow rate of 4-6 m3/min and the proppant concentration of 400 kg/m3, while the cross-linked gel is injected with increasing volume from 3 up to 7 m3 with a flow rate of 1-2 m3/min and the proppant concentration of 1200 kg/m3. At that fibreglass in a quantity of 1.5% of the proppant weight is added to the last portions of the linear and cross-linked gel with the proppant. |
|
Shaped abrasive particles with inclined sidewall Invention can be used for production of abrasive materials. In compliance with this invention, abrasive particles represent shaped abrasive particles with inclined sidewall. Every shaped abrasive particle contains aluminium alpha-oxide and gas first and second faces separated by thickness t. Said shaped abrasive particles feature forming slope angle α between second face and inclined sidewall making 95-130 degrees or inclined sidewall with radius R between first and second faces. Radius R makes 0.5-2 if thickness t. Abrasive material with coating comprises bottom adhesive layer on the substrate first smooth surface, shaped abrasive particles making the abrasive layer and top adhesive layer. Most shaped abrasive particles are secured to bottom adhesive layer by inclined sidewall and feature orientation angle β equal to 50-85 degrees. Abrasive layer consists of shaped abrasive particles by at least 5% by weight. |
|
Polishing paste contains the following, wt %: abrasive micropowder based on aluminium hydroxide and iron oxide - 65, paraffin - 15, stearine - 10, oleic acid - 5, and liquid synthetic soap is the rest. |
|
Aqueous dispersion of silanised silica Invention can be used in paint industry. The method of producing an aqueous dispersion of silanised colloidal particles of silica in an aqueous medium involves mixing a) at least one silane compound with epoxy functionality, b) at least one silane compound without epoxy functionality, capable of modifying colloidal particles of silica, and c) colloidal particles of silica to form an aqueous dispersion of silanised colloidal particles of silica containing silane compounds from a) and b). The weight ratio of a) and b) to silica ranges from about 0.01 to 1.5. |
|
Invention relates to vibration absorbing coating compositions, particularly internal coatings of ship space, rail cars, pipelines, protective casings, protection of the inside of vehicles from vibrations of components and engine noise. The vibration absorbing coating can also be used in aviation, aerospace industry, construction and mechanical engineering. The vibration absorbing paste contains crystalline graphite, an aqueous polymer dispersion based on vinyl acetate with a dry residue of 51-55 wt %, a plasticiser, a density regulator, cellulose powder, sodium alkylbenzene sulphonate surfactant, a fire retardant, tetramethylthiuram disulphide, chalk and water. |
|
Invention relates to the technology of producing metal oxide anodes based on titanium with an electrocatalytic coating and can be used in different fields of applied electrochemistry in electrolysis of solutions with a wide range of mineral content. The method of making a metal oxide anode involves etching a titanium base in an acid solution with simultaneous modification of the surface thereof, forming a protective sublayer of the titanium base and depositing an electrocatalytic coating, wherein etching and modification of the titanium surface is carried out while adding hydrazine chloride to the etching solution, and the protective sublayer is formed from noble metals - iridium and platinum. Hydrazine chloride is added to the etching solution in amount of 0.1-0.3 g/l. |
|
Aqueous dispersion protective paint composition Invention relates to aqueous dispersion paint materials for protecting concrete from corrosion and an aqueous dispersion paint composition. The composition contains a water-base polymeric vinyl acetate-acrylate dispersion, a surfactant, an antifoaming agent - white spirit, a coalescent additive - monoethylene glycol, filler materials, kaolin subjected to ultrasonic treatment, a pigment - rutile titanium dioxide, a thickener - sulfocell, a dispersant - aqueous solution of an ammonium salt of an acrylic copolymer and water. |
|
Production of laminar articles from polymers Invention can be used for production of plastic rollers for conveyers and similar parts: wheels, gears, pulleys and rollers. Method of making laminar article including three plies comprises production of Caprolon or polyimide. The latter is used for forming of the inner, main, bearing most massive play shaped to the part. Inner ply is prepared for application of coating by mechanical processing. Said surface is cleaned by acetone and mid binding ply of adhesive, a silbond, is applied on said surface. Outer ply of polyurethane is filled over adhesive, polymerised and cooling down of finished product. |
|
Power-saving coating composition Invention relates to production of coatings having improved strength, thermal, fire and weather resistance properties for protecting pipelines of heat supply systems and air ducts of hot-air heating and ventilation systems. The power-saving coating composition contains epoxy resin ED-20, curing agent diethylenetriamine DETA - a curing agent based on aliphatic amines, reactive rubber SKN-30KTRA - low-molecular weight copolymer of butadiene with acrylonitrile, containing terminal carboxyl groups, filler - glass or ceramic microspheres with size of 40-120 mcm, muscovite mica. |
|
Adhesive composition contains perchlorovinyl resin, epoxy resin ED-20, an organic solvent - mixture of butyl acetate and acetone in ratio of 1:1, a modifier in form of a phosphorus, boron and nitrogen-containing oligomer, which is obtained in advance by reacting methyl phosphite borate, epoxy resin ED-20 and aniline in weight ratio of 2.5:1:2.5. The adhesive composition contains, pts.wt: perchlorovinyl resin - 15.0, said organic solvent - 85.0, said phosphorus, boron and nitrogen-containing oligomer - 0.1-10.0. |
|
Method for lap splicing components made of fibre-glass In the method for lap splicing components made of fibre-glass by applying an adhesive on the surfaces to be glued and contacting the surfaces, an adhesive based on a solution of chlorinated polyvinylchloride resin CPVC in an organic solvent is applied twice. The solvent is a mixture of butyl acetate and acetone in ratio of 1:1. Further, the method includes adding a modifier of a phosphorus-, boron- and nitrogen-containing oligomer, which is obtained in advance by reacting methyl phosphite borate, epoxy resin ED-20 and aniline in weight ratio 2.5:1:2.5, in amount of 0.1-10.0 pts.wt per 100 pts.wt adhesive. The adhesive film is dried at room temperature - the first layer for 10 minutes and the second layer for 1 minute. |
|
Invention relates to building materials and can be used in applying fire-retardant coatings on building structures. The fire-retardant composition in form of a water-tempered dry mixture for applying coatings is characterised by that it contains, wt %: portland cement 20.0-60.0, expanded vermiculite 10.0-40.0, chrysotile asbestos 5.0-25.0, chamotte 5.0-25.0, expanded pearlite 10.0-30.0, polyfunctional concrete modifier 0.1-1.0, fine water-soluble adhesive 2.0-8.0 and a water-retaining additive 0.1-3.0. |
|
High-strength magnesium silicate proppant obtaining method High-strength magnesium silicate proppant obtaining method that includes milling of the source mixture, its granulating and annealing of the obtained granules, milling of the source mixture with MgO content equal to 24-28 wt % is made up to the particle size of 8 mcm and less, and granulation process is made with water with added sodium or potassium salt of naphthalenesulphonic acid polymethylene or polycarboxymethylene of a sulphonic acid in quantity 0.02-0.07% of the mixture weight in terms of solid matter. The invention is developed in the secondary claims. |
|
Abrasive mixture for abrasive pastes and tools and method for production thereof Invention relates to mechanical engineering and can be used in making abrasive tools and pastes for polishing articles made of solid materials and paint coats. The abrasive mixture contains as a cutting component abrasive particles which are mixed with a binding material and consist of carbon nanoparticles in form of graphenes with monoatomic thickness with sizes ranging from 0.1 mm to 2 mm and graphene pumice, which is graphene clusters in form of stacks of plane-parallel graphenes joined to each other at one of their ends. When preparing the abrasive mixture, the cutting component is mixed with binding material in a vacuum chamber at low pressure. Pressure is then raised to atmospheric pressure before the binding material begins to harden. |
|
Proppant produced from kaolin of Nizhne-Uvelskoe deposit represents sintered annealed ceramic pellets of 0.15-2.0 mm mean size, bulk density of 1.35-1.47 g/cm3 and specific weight of 2.37-2.49 g/cm3. It containing the following substance at the following ratio, in wt. %: aluminium oxide 17.00-29.00, silicon dioxide 65.00-77.00, calcium oxide 0.20-0.39, chromium oxide 0.03-0.0, iron oxide 1.80-4.20, potassium oxide 0.40-0.95, sodium oxide 0.20-0.38, titanium oxide 1.20-2.00, magnesium oxide 0.50-1.00, manganese oxide 0.00-0.01, phosphorus pentoxide 0.00-0.01. Proposed method consists in application of this proppant as a propping agent at oil and gas production intensification by hydraulic fracturing by injection of the mix containing said proppant into productive bed. |
|
Waterproof polymer-bitumen emulsion compound Compound contains oil bitumen BND 60/90, butadiene-styrene polymer DST 30-01, Tamin T4 emulsifier, finely ground mineral filler in form of wet magnetic separation wastes which are ground in advance and water. Components are in the following ratio, wt %: oil bitumen BND 60/90 - 49-51; polymer DST 30-01 - 6; Tamin T4 emulsifier - 2.5; mineral filler - 10-13; water - the balance. |
|
Composition for producing coatings Composition for producing protective coatings contains in pts. wt.: polyurethane prepolymer 100, polymethylphenylsiloxane 10-60, fine-grained electroformed mud 20-50, pigment 0.01-5. A technical result of use of this composition is the monolithic coating filled with electroformed mud, capable to penetrate inside the surface to be protected, having high adhesion to the surface, low moisture permeability, self-extinguishing effect. The coating is self-extinguishing after exposure to open flame (combustion up to 8 seconds). |
|
Invention relates to means applied in processing road, asphalt, concrete and other coverings to eliminate ice glace formations. An anti-glaze composition includes sodium and calcium chlorides, an inhibitor of metal corrosion, which is represented by ammonium chloride, paraform and oxide or hydroxide of an alkali earth or alkali metal. |
|
Complex processing of martite-hydrohematite ore Proposed process comprises ore screening, magnetic separation to obtain magnetic and nonmagnetic fractions, grinding, hydraulic classification, thickening and drying. Martite ore is first subjected to screening with separation to three size classes, i.e. coarse, intermediate and fine. Coarse class is directed to sensory separation to obtain tails and concentrate to be additionally ground and screened to intermediate and fine classes. Intermediate class is conveyed to metallurgical processing while fine class is subjected to pelletising. Hydrohematite ore is first subjected to screening with separation to three size classes, i.e. coarse, intermediate and fine. Coarse class is directed to sensory separation to obtain tails and concentrate to be additionally ground and screened to intermediate and fine classes. Intermediate class is conveyed to metallurgical processing. Portion of fine class is directed for pelletising while another portion is directed to magnetic separation, its magnetic fraction is fed for pelletising. Nonmagnetic fraction is ground with mixing by grinding medium and directed to hydraulic classification of the first stage. Classification sands are returned to the mill. Sink is fed to second stage of classification, its sink being used as 3rd grade pigment after thickening and drying. Sands of second classification are fed to second stage of grinding with mixing by grinding medium. Product ground at second stage is subjected to 3rd stage hydraulic classification, its sands being dried and used as 2nd grade pigment. Thereafter, sink is thickened, dried and used as 1st grade pigment. |
|
Reagent indicator tube based on chromogenic dispersed silica Filler used is chromogenic ion-exchange dispersed silica with covalently grafted hydrazones or formazans. |
|
Drilling mud containing hydrocarbon phase and surface-active substances, weighing agent, mineral salts, a stabilising agent and water includes MULTIOL additive as hydrocarbon phase and surface-active substances, MULTISTAR additive, xanthane gum and additional sodium hydroxide as a stabilising agent with the following ratio of the components, wt %: MULTIOL additive 8.5-25, MULTISTAR stabilising agent 1.5-2.0, xanthane gum 0.2-0.5, calcium carbonate 5-20, magnesium chloride 4-15, sodium hydroxide 1-2, water - the remaining quantity. Invention is developed in dependent claims. |
|
Method of bottomhole support in sand wells Method of bottomhole support in the formation with unstable rocks includes generation of a filter by preparation and injection of the polymer composition to the bottomhole zone. Before and after these operations a solution is injected which makes 10-30% by volume of the polymer composition. Thereafter the well is blown by a flow of gas and withhold for the composition reacting and curing. At that a mixture of silicone resin and solution Chimeco-P is used as the polymer composition in quantity of 95.0-98 wt %: hardener AGM-9 - 5-.0-2.0 wt % representing aminopropyltriethoxysilane. A mixture of xylol or a mixture of rectification residues KORE in quantity of 0.0-100 wt % and aromatic solvent Nefras A in quantity of 100.0-0.0 wt % is used as the solvent. |
|
Intumescent fire retardant paint Invention relates to the chemical industry, namely to fire protective varnish and paint materials for protection of different structures and materials, for instance, wood, metal surfaces, and can be used, for instance, in construction, aviation, railway transport. An intumescent fire-retardant paint contains, wt %: a redispersible polymer binding agent 8-12, a carbonising substance - polyol 10-20, a foaming agent 10-20, a latent source of an organic acid 20-40, a pigment 4-7, a filling agent 8-10 and a thickening agent 0.1-0.5. Before application dry components of paint are mixed with water. |
|
Elastomeric body with elastic flame-retardant coating Invention relates to elastomeric body suitable to be used in anti-vibration appliances and suspensions. Elastomeric body (1) has at least one layer of elastic and flexible flame-retardant coating covering part of the body (1). At least one layer of flame-retardant coating is non-halogenated and contains flame-retardant substance and elastic binding substance. Flame-retardant substance of one layer contains expandable graphite. Elasticity of at least one layer of coating exceeds 20%. |
|
Composition of thermally solidified powder coating Invention relates to a thermally solidified powder coating, a method of its obtaining, application of the powder coating composition for its application on a substrate, the substrate, covered with the powder coating composition, and a method of applying coating on the substrate with application of the powder coating composition. The powder coating composition contains resin with reactive unsaturation, in which all the said unsaturation represents double bonds carbon-carbon, directly bound with an electron-acceptor group, a system of thermal initiation, which contains a transition metal-based catalyst and peroxide, and a common cross-linking agent. Peroxide is selected from peroxyethers, monoperoxycarbonates and their mixtures, and the common cross-linking agent is selected from vinyl ethers, vinyl esters, vinylamides, itaconates, enamines and their mixtures. The amount of the thermal initiation system is selected in such a way that when the powder coating composition is applied on the substrate and solidified at a temperature of 130°C for 20 minutes the coating with resistance to acetone, equal to at least 50 double steps in wear, is obtained. |
|
Composition and method of control of copper loss and erosion of copper alloys in industrial systems Invention relates to a method of reducing erosion and/or corrosion resulting from an impact of aggressive waters in industrial systems, namely for reduction of loss of copper ions from water systems, containing a copper-containing surface, which is in contact with water of the said water system. The composition contains a synergic combination of at least two different benzotriazoles or their salts, and the said synergic composition provides a corrosion-resistant barrier on the copper-containing surface. |
|
Method of processing zinc oxide phosphors Invention relates to electronic engineering. Zinc oxide phosphor is deposited from an anhydrous inert medium on a substrate and placed inside a vacuum chamber in an indirect heating zone. Air is then pumped out from the chamber while simultaneously heating the substrate to temperature of 215°C, a hydrogen stream is fed at pressure of 0.10-0.15 Torr and electrodeless high-frequency discharge is simultaneously generated. |
Another patent 2513358.
© 2013-2014 Russian business network RussianPatents.com - Special Russian commercial information project for world wide. Foreign filing in English. |