Organic macromolecular compounds and their preparation or chemical working-up and compositions based thereon (C08)

C   Chemistry; metallurgy(312744)
C08            Organic macromolecular compounds; their preparation or chemical working-up; compositions based thereon(30547)
Vulcanisable compositions based on nitrile rubbers containing epoxy groups // 2614384
FIELD: chemistry.SUBSTANCE: invention relates to chemical industry. Vulcanisable composition contains one epoxy group-containing hydrogenated nitrile rubber, which contains repeating units of one conjugated diene, one α,β-unsaturated nitrile and one or more additional copolymerisable of monomers; one Lewis base and/or Bronsted base as a cross-linking agent; one cross-linking accelerator. Lewis base and/or Bronsted base differ from compounds, which form a group of cross-linking accelerators.EFFECT: invention makes it possible to limit use of peroxide or sulphur-containing cross-linking agents in vulcanisable compositions, optimise residual compression deformation at high temperatures during prolonged stress.12 cl, 10 tbl
Thermally conductive polymer composite material // 2614334
FIELD: physics.SUBSTANCE: invention relates to thermally conductive dielectric materials and can be used for manufacture of heat-removing gaskets, tapes, sealants, filling compounds for computer memory chips, power electronic products, portable devices, power supplies and power converters, for which it is necessary to provide heat removal from heat-loaded elements and assemblies. A thermally conducting polymer composite material comprising a matrix based on silicone rubber or epoxy material with a filler in an amount of 0.1-80% by total weight of the thermally conductive composite material, wherein the filler is made in the form of aluminum oxide particles, the dimension of which is expressed in nanometers and micrometers, in combination with alumina nanofibers in an amount of 0.1-50% by total weight of the thermally conductive composite material and in the form of alumina nanofibers only in an amount up to 80% of the total weight of thermally conductive composite material, at that, the nanofibers are randomly arranged in the polymer matrix or oriented along the direction of heat flow from the heat-loaded surface.EFFECT: invention provides thermally conducting composite material with high thermal conductivity.3 ex
Composite antifriction material and its manufacturing method // 2614327
FIELD: metallurgy.SUBSTANCE: invention refers to antifriction materials. Composite antifriction material based on bronze-filled PTFE consists of tin and lead bronze, PTFE and ultradisperse diamonds at the following component ratio, wt %: PTFE 5-6; ultradisperse diamonds 0.065-0.187; the rest is tin and lead bronze. Method of material manufacturing involves preliminary mixing of PTFE and ultradisperse diamond powders. Then the mix is mixed with tin and lead bronze powder. Obtained three-component mix undergoes cold pressing at 8000-9000 kgf/cm2 followed by hot pressing at 355-400 °C and pressure of 4500-5500 kgf/cm2. Hot-pressed workpiece is cooled down to room temperature under the pressure of hot pressing.EFFECT: enhanced mechanical strength and tribo-technical parameters of composite antifriction material.2 cl, 2 tbl, 1 ex
Process for continuous production of halogen-free thermoplastic elastomer compositions // 2614277
FIELD: chemistry.SUBSTANCE: invention relates to thermoplastic elastomer compositions and methods for continuous production of said compositions. continuous method for production of dynamically cured thermoplastic elastomer comprises mixing at first stage of a mixing device of continuous action a thermoplastic resin, a halogen-free elastomer, with polyolefin content of more than 3.5 mol%, which is modified with unsaturated carboxyl compound, and a curing agent. At second stage a curing system is added, which is suitable for use with halogen-free elastomer for dynamic vulcanisation.EFFECT: invention enables to obtain materials with improved relative elongation at break and ultimate tensile strength.15 cl, 2 tbl
ethod for preparation of collagen product // 2614273
FIELD: pharmacy.SUBSTANCE: invention refers to processing and cosmetics industris, namely to a method for production of a collagen product with the following characteristics: reception of skins of freshwater fish such as silver carp, carp, grass carp, mirror carp, manual or machine cleaning from scale, muscle tissue, fins and mechanical impurities, washing for 30 minutes in drum type machines with a solution of soap and then in water - to remove residual soap, the rinsed skins are subjected to peroxide and alkaline treatment, for which they are poured with a mixture of hydrogen peroxide with mass concentration of 3% and sodium hydroxide with mass concentration of 3 % and kept at 20-25°C for 1.5-2 hours and liquor ratio of 1:4, the treated skins are washed with flowing water at 8-12°C for 10-15 min, then the skins are poured with citric acid solution with mass concentration of 6% and kept for 6 days, the resulting mass is homogenized, packaged in polyethylene and stored at 0…+4°C for° max. 4 months.EFFECT: increase of collagen product quality indicators: increase in collagen output, improved organoleptic properties, reduced complexity and cost by reducing the number of process steps and reagents, intensification of the pre-treatment process and raw materials degreasing.1 tbl, 2 ex
Two-layer, flat, transparent hydrogel substrate for long-term cell cultivation // 2614260
FIELD: biotechnology.SUBSTANCE: two-layer, flat, transparent hydrogel substrate is proposed for long term cell cultivation and the method to get it. The substrate in the hydrated state has a thickness in the range of 25-500 microns, and the radius of menisci curvature of 10-150 microns. The hydrogel substrate includes a structure forming layer consisting of a three-dimensional collagen hydrogel and an upper protein layer. The three-dimensional hydrogel comprises collagen of type I, collagen of type III and proteins that promote cell adhesion and migration. The upper protein layer contains collagen of type IV, laminin and fibronectin. The method of substrate preparing comprises mixing of solutions of collagen of type I, collagen of type III and proteins that promote cell adhesion and migration and further gelation and vitrification, followed by proteins immobilization on the surface.EFFECT: preservation of phenotype by endothelial cells and epithelial cells in their long-term cultivation.13 cl, 1 dwg, 3 tbl, 8 ex

Composition for producing hydrogel based on polyvinyl alcohol for immobilization of microorganisms // 2614249
FIELD: chemistry.SUBSTANCE: composition for producing hydrogel based on polyvinyl alcohol for the immobilization of microorganisms is described, consisting of a polyvinyl alcohol and a catalyst of cerium-ammonium nitrate crosslinking, characterized in that the initial components are taken in the molar ratio of EVOH: (NH4)2Ce(NO3)6 (160-110):(1-1.3).EFFECT: ensuring formation of water-insoluble hydrogel for immobilization of microorganisms, improved accuracy and sensitivity of the assay using the biosensor.18 cl, 1 dwg,1 tbl, 1 ex
Epoxyurethane binder with increased heat and temperature resistance // 2614246
FIELD: chemistry.SUBSTANCE: binder comprises an epoxy component and an aromatic polyisocyanate. The epoxy component is a mixture of the polyfunctional epoxy resin and the phenyl glycidyl ether, which reacts to the aromatic polyisocyanate in the presence of a amine hardener. Said amine hardener is triethanolamine.EFFECT: using said epoxypolyurethane bindings allows to produce organic, basalt, carbon and fiberglass plastics with high thermal and heat resistance, chemical resistance in corrosive media, as well as the low porosity; the invention also allows to improve the sanitary work conditions and the environmental situation at production due to the technology of manufacturing filler-reinforced plastics without the use of solvents.4 tbl, 2 ex
Electroconductive polymer composition // 2614145
FIELD: chemistry.SUBSTANCE: composition contains polyolefin, carbon black with volume resistivity ρ= 10±6 Ohm⋅cm at content in the polymer base, carbon black with volume resistivity ρ= 5±3 Ohm⋅cm at content in the polymer, 4,4'-tiabis(6-tert-butyl-m-cresol),tetra-bis-methylene- (3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate), 3,5-bis(1,1-dimethylethyl)-4-hydroxy-2-[3- [3,5-bis(1,1-dimetietil)-4-hydroxyphenyl]-1-oxopropyl] hydrazide of benzopropione acid, zinc stearate, polyethylene wax and magnesium hydroxide.EFFECT: preservation of mechanical and electrical properties of conductive coating, as well as high mechanical strength and low flammability.2 tbl, 5 ex

Polymer composition for electric devices // 2614138
FIELD: manufacturing technology.SUBSTANCE: invention relates to a cable, including a cross-linked cable, also to a method for production of a cable, more preferably, to production of a power cable. Cable includes a conductor enveloped by one or more layers, wherein at least one of the above said layers is made from a polymer composition, which contains polyolefin and an anion-exchange additive of hydrotalcite type in the amount from 0.000001 to less than 1 wt% with respect to the total weight of the polymer composition. Herewith polyolefin is an unsaturated polymer of ethylene of low density, which is selected from an unsaturated ethylene homopolymer of low density or an unsaturated ethylene copolymer of low density and one or more comonomers in an amount of at least 50 wt% with respect to the total weight of the polymer component(s) present in the polymer composition. Besides, the polymer composition, if necessary, additionally contains peroxide in the amount of less than 35 mmol -O-O-/kg of the polymer composition. Herewith the cable, probably, is ligated and then cross-linked.EFFECT: obtained cable has low conductivity and good mechanical properties.17 cl, 1 dwg, 2 tbl
Bitumen composition // 2614026
FIELD: construction.SUBSTANCE: bitumen composition comprises the mixture of oxidized bitumen with a non-oxidized oil product. Wherein the oxidized bitumen is represented by bitumen with the softening point of 51-53°C by the ring and ball method, obtained by weighted tar oxidation with TDM80 of 123-158 sec, and the non-oxidized oil product is represented by the residual extract of oils selective purificationg by solvents, or a mixture of the residual and the viscous extracts of the selective oils purification, containing no more than 40% by weight of the viscous extract of the selective oils purification at the ratio oxidized bitumen: non-oxidized oil product of 95-89: 5-11 wt %.EFFECT: provding the possibility for obtaining bitumen complying with the Interstate standard requirements.2 tbl, 11 ex
etal-polymer composition for manufacturing pim - products // 2614010
FIELD: metallurgy.SUBSTANCE: invention relates to powder metallurgy, in particular to metal-polymer compositions for manuracturing PIM-products by means of moulding and sintering said compositions. The composition is prepared by means of mechanical mixing the two mixtures; the components of the first one are finely divided powders of the alloying element and iron, and the components of the second one are an organic binder and a plasticizer - stearic acid, the composition comprising the titanium powder as an alloying element, and the mixture of paraffin and polypropylene as an organic binder. Wherein said two mixtures are mixed in the weight ratio of 65:35, the nanoscale part of the initial powders being 3.7 wt % and having the size distribution curve in the range of 30-70 nm.EFFECT: invention provides obtaining the composition having sedimentation resistance, as well as high fluidity, for the production of moulded articles of any degree of complexity.5 cl, 3 ex
Elimination of smells of aldehydes in personal hygiene products // 2614001
FIELD: hygiene.SUBSTANCE: invention relates to decrease and control of odor in personal hygiene products, in particular smells associated with aldehydes. Odor control layer for personal hygiene products contains applied onto it composition based on polyethylene glycol (PEG) or PEG copolymer. Wherein PEG or PEG copolymer is characterized by number of polymer units n less or equal to 20. This layer may be placed in article of personal hygiene, such as diaper, panties for toilet training, absorbent panties, product for adults, patients suffering urinary incontinence or hygienic product for women. Extra layers for odor control may include composition based on silver nanoparticles and activated carbon. Cleaning composition with PEG and possibly activated carbon and silver nanoparticles can be combined with article of personal hygiene product to form set.EFFECT: invention provides considerable reduction of odor of aldehydes in personal hygiene products.14 cl, 12 dwg, 5 tbl, 4 ex
Compound // 2613987
FIELD: chemistry.SUBSTANCE: invention refers to a compound composition intended for use in a moisture saturated environment of cavitation-resistant material for spillway elements of hydraulic structures, including protective structures, as well as for sealing of deep and shallow defects of concrete and reinforced concrete structures - for hydroelectric dams filtering cracks grouting and mountain ranges restoration. The compound includes epoxy-diane uncured resin, dibutyl phthalate, an amine hardener, chlorosulfonated polyethylene or polyethylene vinyl acetate copolymer (Sevilen), modifiers - polypropylene glycol and Laproxides, fillers - minium iron and ultrafine filler selected from the group consisting of carbon black, aerosil, as well as heat and light stabilizers from the group of oxydiphenylamine-4 and its N-alkyl derivatives at the certain ratio of components.EFFECT: due to the optimized modifying effect of additives and their compatibility with the polymer matrix, compound cavitation resistance is achieved, as well as the ability to cure directly in an aqueous medium at a low temperature with exclusion of shrinkage, delamination and the need to prepare the substrate surface, with increased density without increasing the initial viscosity.
Priming enamel for protective anti-corrosion epoxy coating protective layer up to 500 microns, method for protective anti-corrosion epoxy coating formation, and product with protective anti-corrosion epoxy coating // 2613985
FIELD: chemistry.SUBSTANCE: priming enamel contains mass. p.: 100-110 of epoxy resin, 1-2 of organo-modified sepiolite, 110-115 of organic solvents mixture, 22-25 of plasticiser, 150-160 of filler, 27-35 of pigments, 2-4 of corrosion inhibitor, 8-12 of amine or phenol amine hardener.EFFECT: invention allows to increase the epoxy primer and enamel base and solvent mixture resilience, to reduce drying to a solid state and improve thixotropic properties of the epoxy priming enamel.19 cl, 1 tbl, 5 ex
Rubber composition and tire // 2613969
FIELD: manufacturing technology.SUBSTANCE: invention relates to rubber composition containing rubber component and farnesene polymer. Composition contains rubber component selected from group consisting of synthetic rubber and natural rubber; farnesene polymer with average molecular weight from 25,000 to 500,000 in amount of 0.5–50 wt% per 100 weight parts of rubber component and soot, having average particles size from 5 to 100 nm, in amount of 20–100 wt% per 100 weight parts of rubber component.EFFECT: invention enables to improve composition processability and improve tire rolling resistance characteristic.10 cl, 7 tbl
Hot-melt adhesive // 2613965
FIELD: chemistry.SUBSTANCE: invention relates to hot-melt adhesive, which is used for production of disposable products such as a diapers and hygiene products, which are a typical product made from nonwoven fabric. Adhesive contains (A) thermoplastic block-copolymer, which is a copolymer of vinyl-containing aromatic hydrocarbon and a conjugated diene compound, (B) propylene homopolymer, obtained by polymerisation of propylene using metallocene catalyst, (C) a tackifying polymer and (D) a plasticiser. Propylene homopolymer (B) has a melting point of 100 °C or lower and polydispersity (Mw/Mn) from 1 to 3.EFFECT: produced hot-melt adhesive is excellent for high-speed coating and application of coating using a vortex method at low temperature, and is excellent in its adhesion to polyethylene and nonwoven fabric; id est disposable products obtained using hot-melt adhesive, can be effectively made using a line for high-speed coating method, and application of coating can be performed at low temperature of about 140 °C, which is reason of higher safety; wherein disposable products are excellent in adhesion to nonwoven fabric and to a polyolefin film and less likely to peel off.5 cl, 2 tbl

Sulphur-containing polymers and epoxy composition with amine-catalysed controlled release // 2613955
FIELD: chemistry.SUBSTANCE: invention relates to compositions containing sulphur-containing polymers, such as polythioethers and polysulphides, polyepoxides and controlled release amine catalysts, used in aerospace sealing materials. Composition contains a sulphur-containing polymer, selected from a sulphur-containing polymer with a terminal thiol group, blocked sulphur-containing polymer with a terminal thiol group and combinations thereof, polyepoxy hardener and a controlled release amine catalyst, including a matrix sealing substance containing an amine catalyst.EFFECT: invention provides a controlled rate of hardening of composition and a long shelf life in storage.19 cl, 7 tbl, 2 dwg, 7 ex
Split-resistant low molecular cross-linked hyaluronate // 2613887
FIELD: biotechnology.SUBSTANCE: hydrogel is formed by sodium hyaluronate substrate with an average molecular weight of 50,000 to 100,000 Da, cross-linked with diglycidyl ether of 1,4-butanediol, which is obtained by a method comprising interaction of 8-40% solution of sodium hyaluronate with an average molecular weight of 50,000 to 100,000 Da in 0.75-1.5% aqueous solution of sodium hydroxide with the diglycidyl ether 1,4-butanediol volume of 180 to 500 moles per one mole of sodium hyaluronate.EFFECT: product has a high resistance to enzymatic degradation.14 cl, 15 dwg, 5 tbl, 14 ex

Polyurethane flexural stiffener // 2613635
FIELD: chemistry.SUBSTANCE: invention relates to polyurethane flexural stiffeners designed to give local stiffness to the device near the point of attachment to the support. The flexural stiffener comprises a flexible polymer sleeve with an axial through hole for receiving an elongated flexible component and means for attaching the sleeve to the support. At least a part of the flexible polymeric sleeve is a polyurethane elastomer obtained in the reaction of an isocyanate-terminated prepolymer and a curing agent with isocyanate index of from 90 to 120. The isocyanate-terminated prepolymer contains 7 - 15 wt % of isocyanate and is the reaction product of at least one aromatic polyisocyanate and at least one polyether polyol having a hydroxyl equivalent of from 350 to 2000 and a nominal functionality of 2 - 2.3. The curing agent is one or more diol chain extenders having equivalent weight per group reacting with an isocyanate (up to 125) or a mixture of one or more diol chain extenders and one or more polyether polyols having a hydroxyl equivalent of 350 - 2000 and a nominal functionality of 2 - 2.3. The content of the hard segment of the polyurethane elastomer is from 40 to 60 wt %.EFFECT: invention has great fatigue resistance and works well in a wide range of usage temperatures.12 cl, 2 dwg, 3 tbl, 5 ex
ethod for manufacture of products from fiberglass with anti-static surface properties // 2613510
FIELD: metallurgy.SUBSTANCE: decorative and protective coating is prepared - gel coat with addition of a conductive chopped glass fiber roving with fiber length of 0.01-6.0 mm, and aluminium powder. A matrix is prepared by cleansing, degreasing and release agent application. The prepared gel coat is applied, dried. At the same time, while the matrix is dried, a solution is prepared from polyester resins with additives, then the pre-cut fiberglass with gel coat is laid in the dried matrix, forming the product, followed by application of the solution prepared from polyester resins with additives (thickness is 0.1-6.0 mm) which is uniformly distributed within the matrix and dried to form a finished product, which is removed from the matrix and machined.EFFECT: invention allows to provide the finished product with electrical conductivity, sufficient to drain static currents on the surface layer while increasing strength.
ethod of batchwise processing of organic and solid polymer domestic wastes // 2613507
FIELD: chemistry.SUBSTANCE: method of processing comprises performing a two-stage depolymerization of solid polymer domestic wastes in tubular singular reactor-modules - in fours - in the first and in the second heating steps. Wherein important types of energy and motor fuels are obtained - gasoline, fuel oil, light liquid and gaseous fractions of hydrocarbons and construction materials - portland cements.EFFECT: invention allows to reduce the power consumption of the waste recycling process, improve its efficiency, productivity while maintaining environmental compatibility of the recycling process.2 dwg, 2 ex
Composition for producing polymer composite material // 2613503
FIELD: chemistry.SUBSTANCE: composition comprises aqueous 2-9% solution of polyvinyl alcohol, potassium-ferrum titanate with a hollandite-type structure and chemical composition corresponding to formula K1.54Ti8-xFexO16, preferably K1.54Ti7.4Fe0.6O16, phosphoric-tungstic acid as an additive and glycerine as plasticiser at a ratio of, wt %: aqueous solution of polyvinyl alcohol - 38-64, potassium-ferrum titanate - 20-50, phosphoric-tungstic acid - 0-1, glycerine - the rest.EFFECT: high performance dielectric.3 cl, 2 tbl
ixture of materials // 2613436
FIELD: construction.SUBSTANCE: invention relates to the sealing profile for doors and windows made of the mixture of materials including about %: ethylene-propylene-diene rubber 10-50, propylene copolymer with ethylene 8-50, the filler 50-70, paraffin oil 0-20, accelerator - sulfur donor 0.1-5, sulfur 0.5-5, zinc oxide 0.5-3. The method of producing the window or door structural element is also described which uses at least two sealing profiles of the mixture of materials containing ethylene-propylene-diene rubber and propylene copolymer with ethylene, wherein the mixture of materials is blended, shaped, and then cross-linked under the influence of temperature followed by retracting of the sealing profiles into the corresponding structural elements and by welding of the structural elements and the sealing profiles to each other in one pass.EFFECT: invention provides weldability of the sealing profile.13 cl
Polymethylmethacrylate based hardcoat composition and coated article // 2613408
FIELD: chemistry.SUBSTANCE: invention relates to coating compositions. Composition contains a polymer or a polymethyl methacrylate copolymer, having average molecular weight not less than 50,000 g/mol, monomer containing at least one of substances: alkylene-diacrylate, alkylene-dimethacrylate, cycloalkylene-diacrylate or cycloalkylene-dimethylacrylate, wherein at least one of said substances is not less than 80 wt% monomer, and an ultraviolet radiation stabiliser, wherein stabiliser contains at least one UV absorber or hindered amine light stabiliser. Article comprises polymer substrate and a first surface coating of a polymer substrate, where first coating is obtained by polymerisation of said coating composition.EFFECT: technical result consists in providing wear-resistant surface coating.25 cl, 3 dwg, 5 tbl, 9 ex

Polymer composition for electric devices // 2613330
FIELD: electricity.SUBSTANCE: invention relates to a power cable of direct current, which contains a polymer composition and, probably, is cross-linkable and then cross-linked, as well as a method of producing a DC power cable, including a high-voltage DC power cable. DC power cable comprises a conductor enveloped by an inner semiconducting layer, an insulating layer and an outer semiconducting layer in the specified order. Herewith at least the insulating layer contains a polymer composition, which contains an ethylene polymer and an inorganic ion-exchange additive of hydrotalcite type in the amount of 0.000001–0.7 wt% with respect to the total weight of the polymer composition.EFFECT: obtained cable has low conductivity and good mechanical properties.10 cl, 2 dwg, 2 tbl, 4 ex
Low-emission hardener for epoxy resins // 2613326
FIELD: chemistry.SUBSTANCE: invention relates to a curing agent, suitable for curing of epoxy resins, epoxy resin composition and use thereof, to a cured composition, as well as to an article. Curing agent contains an amine of a formula described below and at least one polyamine, containing at least three amine hydrogens, capable of reacting with epoxy groups. Epoxy resin composition contains at least one epoxy resin and said curing agent. Cured composition is obtained by curing epoxy composition to produce a coating. Article is obtained by applying epoxy composition on a substrate surface.EFFECT: invention enables to obtain a curing agent with weak smell, low viscosity, which shows no tendency to drying or precipitation in air and can harden without turbidity under conditions of moisture content and low temperatures, as well as obtain even non-adhesive film with high hardness.17 cl, 4 tbl, 22 ex
Composition of olefinically functionalised siloxane oligomers based on alkoxy silanes // 2613325
FIELD: chemistry.SUBSTANCE: invention relates to compositions, containing olefinically siloxane oligomers with at most one olefinic residue at silicon atom. Disclosed composition, containing olefinically functionalised siloxane oligomers, containing Si-O cross-linked structural elements, forming chain-like, cyclic, cross-linked and/or spatially cross-linked structures, that are derivatives of alkoxy silanes, wherein weight-average molecular weight not less than 315 g/mol, and content of residues used in production of an acid catalyst is not more than 250 mg/kg of composition. Also disclosed is a method of producing said composition.EFFECT: technical result is disclosed compositions have very low content of volatile components and high thermal stability, which facilitates their processing and application.35 cl, 23 tbl

ethod for copolymerizing ethylene and esters of vinyl alcohol // 2613070
FIELD: chemistry.SUBSTANCE: polymerizer comprises the polymerization reactor and one or more compressor. The monomer mixture is compressed in sequence of the compression stages. Then, the compressed gas mixture is cooled after each compression stage of the recycling gas to feed fresh ethylene. After cooling, the monomer mixture fraction is recovered from the remaining gas and recycled to the polymerizer in liquid form. The part of the liquid fraction is purified after compression of the monomer mixture in the corresponding compression stage to the pressure of 0.2-10 MPa before entering the polymerizer.EFFECT: reduction of corrosion caused by the decomposition products of the comonomers and the obtained copolymers of ethylene and vinyl acetate esters, as well as production increase of the ethylene and vinyl esters in the copolymerization under high pressure.10 cl, 2 dwg, 4 ex
Catalyst components for polymerisation of olefins // 2613069
FIELD: chemistry.SUBSTANCE: invention relates to a solid catalyst component of the (co)polymerization of olefins, particularly of propylene. The solid component of catalyst for the (co) polymerization of the olefins CH2=CHR, where R is a hydrocarbon radical having 1-12 carbon atoms in admixture with additional ethylene is described. A catalyst component comprises Ti, Mg, Cu, Cl and an electron donor compound. The weight ratio Cu/Ti is less than 0.5.EFFECT: improved stereospecificity of the solid catalyst component.14 cl, 4 tbl, 23 ex
Composition containing products of alkali metal propyl-functional siliconates block co-condensation with silicates and production method thereof // 2613049
FIELD: construction.SUBSTANCE: invention relates to a composition for hydrophobization of construction materials. Composition for hydrophobization of construction materials mainly contains water-soluble block co-condensates of alkali metals propylsiliconates with alkali metals silicates and water, herewith the block co-condensates contain cross-linking structural elements, which form chain-like, cyclic, cross-linked and/or spatially cross-linked structures, and at least one of which has idealized general formula (I): MO[[Si(R1)xY((y-2)-x)O]a[Si(Y)2]b[Si(R1)xY((y-2)-x)O]c]n [[Si(Y)2]m]OM (1), herewith in the structural elements, derivatives of alkoxy silanes and silicates R1 denotes a propyl residue, Y respectively independently denotes OM or OH or in cross-linked and/or spatially cross-linked structures independently denotes O1/2, M independently denotes an alkali metal ion, x respectively independently denotes 1 or 2, y denotes 3 or 4, wherein (x+y)=4; a ≥ 1, c ≥ 0 and b ≥ 0; the number of blocks n ≥ 1, the number of silicate blocks m ≥ 2, wherein (b+m)=v and the ratio of (a+c)/v ≤ 1.EFFECT: invention also relates to a method of producing the said composition.16 cl, 2 tbl
ethod of producing foamed copolymers based on containing adhesion promoter poly(meth)acrylimide // 2613046
FIELD: technological processes.SUBSTANCE: invention relates to methods of producing foamed plastic moulded articles, which are suitable as a structural element for production of spacecraft, aircraft, water transport means and ground vehicles. Single-step method includes the steps of: grinding a polymer molded article from poly(meth)acrylimide, coating the ground material with an adhesion promoter, loading the coated ground material into a mold, heating the mold, cooling the mold to a temperature below the foaming temperature and taking a foamed plastic moulded article out of the mold. Two-step method differs from the single-step one by that after the step of grinding the polymer molded article it is preliminarily foamed.EFFECT: technical result is producing foamed plastic moulded articles, which have high mechanical properties.22 cl
ethod for producing of polyolefin succinimide // 2612962
FIELD: oil-and-gas industry.SUBSTANCE: invention relates to basic organic and petrochemical synthesis, in particular to the method for producing of polyolefin succinimide used for prevention of formation of carbon deposits on parts of internal combustion engines. The method includes the step of alkenyl succinic anhydride synthesis in a reactor with a stirrer with preheating of reaction mixture components, polyolefin succinimide synthesis stage. At the stage of synthesis of polyolefin succinimide oligomers of unsaturated hydrocarbons C2-C4 with the molecular weight 260-1500 and polyethylene polyamine solution with hetero organic compound with the gross formula CxHyOnNm.EFFECT: method simplifies the process, reduces power consumption and duration of the process, and minimizes the formation of homopolymers of maleic anhydride and polymers insoluble in oil and increases the yield of finished product.3 cl, 2 tbl
Catalyst for curing modified binder based on novolak resins // 2612961
FIELD: chemistry.SUBSTANCE: invention relates to the catalyst for accelerating the curing of novolac resins modified by propargilgalogenidom comprising as an organic nickel compound a 0.01-0.5 mol % solution of 2-ethylhexanoate nickel in a ketone solvent.EFFECT: invention reduces heat capacity while maintaining low curing temperature, and its storage stability in air.1 tbl, 2 dwg
Chloroprene rubber, chloroprene rubber composition, vulcanisate thereof and moulded article // 2612939
FIELD: chemistry.SUBSTANCE: invention describes chloroprene rubber, obtained through emulsion polymerisation of initial monomers, including antiperiplanar trans-1-chlorobuta-1,3-diene and cis-1-chlorobuta-1,3-diene in total amount of 1.5 wt% to 5 wt% and 2,3-dichlorobuta-1,3-diene in amount of 2.0 wt% to 20 wt%. Invention also describes a chloroprene rubber composition, a vulcanisate thereof, a moulded article and a method of producing chloroprene rubber.EFFECT: technical result is production of chloroprene rubber, having excellent low-temperature properties.6 cl, 4 tbl
Rubber mixture // 2612938
FIELD: chemistry.SUBSTANCE: invention refers to rubber industry, in particular to the production of rubber mixtures used for manufacture of sealing elements applied in the production of packer-anchor equipment for oil and gas industry. Rubber mixture contains butadiene-nitrile rubber of trademark BNKS-40 AMN, percadox BC-FF, irganox 1010, technical carbon N 220, technical carbon P514, oligoester acrylate MGF-9, oligoester acrylate TGM-3, triallyl isocyanurate, maleide F, zinc monomethyl acrylate, captax, novantox 8PFDA and technological additive Lubstab-01 or lubricant MA-L22.EFFECT: improved conventional tensile strength, relative elongation at rupture, tear resistance due to enhanced mixture ingredient dispersion in rubber matrix and high ageing resistance of rubber in aggressive hydrocarbon media at high temperatures.2 tbl, 4 ex

Isoprenesynthase and gene coding it, method of producing isoprene monomer // 2612916
FIELD: biochemistry.SUBSTANCE: group of inventions relates to biochemistry. Polynucleotide is disclosed, coding protein with isoprenesynthase activity. Protein is disclosed, which has isoprenesynthase activity. Expression vector is also disclosed, containing said polynucleotide or polynucleotide, coding said protein. Host cell for production of isoprenesynthase is disclosed, containing said vector. Method of producing protein with isoprenesynthase activity using above host cell is disclosed. Method of producing isoprene monomer from dimethylallyldiphosphate in presence of said protein or using above host cell in medium with dimethylallyldiphosphate is disclosed. Method of producing isoprene polymer is disclosed involving step of producing isoprene monomer using said method.EFFECT: group of inventions increases production of isoprene by several times in comparison with production of isoprene using isoprenesynthase produced from kudzu pilar or poplar.14 cl, 4 dwg, 33 tbl, 16 ex
Low-chloride compositions of olefinically functionalized siloxane oligomers based on alkoxysilanes // 2612909
FIELD: chemistry.SUBSTANCE: invention relates to compositions of olefinically functionalised siloxane oligomers. Disclosed is a method for preparing a composition by reacting olefinically functionalised alkoxysilane with water in presence of a hydrolysis catalyst and a solvent to obtain a composition of olefinically functionalised siloxane oligomers with total content of chlorides of up to 100 mg/kg and average molecular weight from 410 to 750 g/mol. Also disclosed is a composition, obtained using disclosed method.EFFECT: technical outcome is proposed method enables to obtain siloxane oligomers with low content of volatile organic components, having high stability during storage.19 cl, 25 tbl
Non-aqueous suspension of agent reducing hydrodynamic drag of hydrocarbon liquids // 2612834
FIELD: chemistry.SUBSTANCE: suspension comprises ultra-high molecular nonaqueous amorphous poly-alpha olefin separating the agent and the suspension mediumrepresented by organic compounds with a negative solidification temperature. Furthermore, the suspension comprises an additive representing at least one organic polar compound having a dipole moment of not less than 2.0 D, solubility in the suspension medium components and the unbranched spatial stereometry. The suspension can be used in pipeline transportation of crude oil and petroleum products in the conditions of the extreme continental and Arctic climate without its heating prior to injection.EFFECT: according to invention, the suspension due to difficulty of formation of crystallization centres has a lowered solidification temperature.2 cl, 2 tbl, 7 ex
Polymer of maleic acid, allyl ether and methacrylic acid compounds, and preparation and use thereof // 2612831
FIELD: chemistry.SUBSTANCE: present invention relates to additives for hydraulically setting systems. Described is a polymer P containing: a) m mol% of at least one structural link A of Formula (I): b) n mol% of at least one structural link B of Formula (II): and c) o mol% of at least one structural link C of Formula (III): where R1 and R2, each independently represents COO-M, R3 represents H or CH3, R4 represents , R5 is an alkylene group with 1–6 C-atoms, R6 represents an alkyl group with 1–20 C-atoms, R7 represents H or CH3, R8 represents a M, hydroxyalkyl group with 1–6 C-atoms; where substitutes A independently represent from C2- to C4-alkylene group, index q has a value from 2 to 300, in particular from 2 to 50, index r equals 0; where M = cation, preferably H+, alkali metal ion, alkali-earth metal ion, divalent or trivalent metal ion, NH4+ or organic ammonium compound, especially preferably H+, Na+, Ca++/2, Mg++/2, NH4+ or organic ammonium compound; where m, n, o each independently represents a number, where sum m+n+o=100 and m>0, n>0 and o>0; and where m=10–80, n=10–50, o=10–50. Also described is a method of producing said polymer in presence of a free-radical polymerisation initiator at reaction temperature from 10 °C to 50 °C, preferably, 15 °C to 35 °C. Also described is use of said polymer to improve processability of hydraulically setting compositions. Described is a hydraulically setting composition containing said polymer, and method for preparing it.EFFECT: obtaining polymers having improved plasticising effect hydraulically setting compositions and providing their good processability during a long period of time.16 cl, 6 ex, 2 tbl
ethod of producing heparin // 2612813
FIELD: chemistry.SUBSTANCE: method of producing heparin involves thawing and homogenisation of raw material, filling with 0.6M sodium chloride solution, adding alcalase to a final concentration of 0.1-0.5%. Pigs' frozen mucous membrane of the small intestine (mucosa) with a shelf life of no more than 6 months at -20°C is used as raw material. Enzymatic hydrolysis is being performed at 65°C and pH 8.5-8.6 for 6 hours, then the enzyme is being inactivated at 90°C for 15 minutes. The produced hydrolyzate is cooled to temperature of 15-20°C and centrifuged. Concentrated hydrochloric acid is added to supernatant fluid to pH 3.0, heated to 70°C and being held for 30 minutes for additional hydrolyzate decontamination of protein origin ballast substances. The resulting residue is removed by way of centrifugation. Thereafter, end product sorption is performed in dynamic mode from the supernatant fluid on anion exchanger YMC-BioPro Q75. Anion exchanger is pre-equilibrated by 0.6M sodium chloride solution. After the sorption is complteted the anion exchanger is washed with 0.6M sodium chloride solution, ballast substances are removed from the anion exchanger with 0.9 M sodium chloride solution, heparin is desorbed from the anion exchanger with1.4 M sodium chloride solution.EFFECT: invention increases output of heparin, its specific activity, reduces the technology process.1 cl, 5 ex

Amine-containing polymers for use as sequestrants of bile acid // 2612795
FIELD: pharmaceutics.SUBSTANCE: invention relates to an amine-containing polymer, a pharmaceutical composition for lowering blood cholesterol, as well as to use of amine-containing polymer and pharmaceutical composition. Amine-containing polymer contains repeating units obtained by polymerisation of amine-containing monomer of formula (2) and cross-linking monomer. In amine-containing monomer R2 is independently C2-C8 alkylene or C2-C8 alkylene, where one or more groups -CH2 an alkylene group substituted with at least one amide functional group and R3 is C2-C12 alkylene, arylene, diformylheterocyclic group or C2-C8 alkylene, where one or more groups -CH2 an alkylene group substituted with amide, carbonyl, ether group, ester group, cycloalkyl, aryl or heterocyclic functional group. Cross-linking monomer is guanidine, guanidine salt, compound of formula X-R1-X, or combination thereof, where each X is independently a leaving group, R1 is C8-C16 alkylene or C5-C50 alkylene, where one or more groups -CH2 an alkylene group substituted with amide, carbonyl, ether group, ester group, cycloalkyl, aryl or heterocyclic functional group, or one or more groups -CH2 an alkylene group substituted with hydroxyl. Pharmaceutical composition for lowering blood cholesterol comprises said amine-containing polymer and a pharmaceutically acceptable adjuvant. Amine-containing polymer and a pharmaceutical composition are used for lowering LDL-cholesterol level in serum in an animal.EFFECT: invention enables to obtain amine-containing polymers and their compositions, effectively binding and removal of bile acid salt from gastrointestinal tract, and treating hypercholesteremia, diabetes, itching, irritable colon syndrome with diarrhoea, malabsorption of bile acid.19 cl, 4 dwg, 41 tbl, 50 ex
oisture-hardened compositions, method for production thereof and use thereof // 2612793
FIELD: chemistry.SUBSTANCE: invention relates to adhesive and sealing substances, methods of their production and application. Disclosed are compositions containing a) a polymer selected from polyurethane or polyether, modified with at least one silane group (R1)a(X)bSi-, where X is selected from R2O-, R2NH-, R2O-CO- and (R2)2C=N-O-, R1 and R2 independently denote alkyl, cycloalkyl and/or aryl, a is equal to 0, 1 or 2, b is equal to 1, 2 or 3, and a + b = 3, and b) a mixture having shape of chains and/or cyclic siloxanes of general formula (I) and/or (II), in which (R) independently denote alkoxy, alkoxyalkoxy, alkyl, alkenyl, cycloalkyl and/or aryl, and some of (R) denote aminoalkyl-functional groups of formulae -CoH2o-NH2, -CoH2o-NHR', -CoH2o-NRR', -CoH2o-NH-CpH2p-NH2 or -CoH2o-NH-CpH2p-NH-CqH2q-NH2, where R' is alkyl, cycloalkyl or aryl, and R assumes one of said values, or where residues R and R' bonded to a nitrogen atom, together with common nitrogen atom, form a heterocyclic ring having from five to seven members, where R' and R is assume one of said values, o independently denote integers from 1 to 6, p and q independently denote integers from 2 to 6, m is an integer from 2 to 30, n is an integer from 3 to 30, wherein one silicon atom compound of formula (I) and/or (II) is bonded to not more than one aminoalkyl-functional group, and wherein coefficient of molar ratio of Si and alkoxyl residues is at least 0.3.EFFECT: compositions are ideal as adhesive substances and as sealing substances and are characterised by improved adhesion, especially on bases that are hard to glue to each other.(R)3Si-O-[Si(R)2-O]m-Si(R)3 (I), (R)2Si-[O-Si(R)2]n (II)15 cl, 22 ex

Device for separation of starch-containing suspensions // 2612777
FIELD: food industry.SUBSTANCE: device for separation of starch-containing suspensions, comprising a casing with filtrate and retentate receivers, mounted therein a tapered filtering rotor installed equipped with elements providing accordingly for regulation of the residue flow along the filtering surface and delivery of suspension into the rotor. The element regulating the residue flow along the filtering surface consists of a series of ring-shaped disks arranged along the rotor with adjustable clearances and attached by means of the support at coaxially filtering surface. The ring-shaped disks are attached to the cone. Wherein the casing is provided with a driving mechanism made in the form of several, minimum four, cylinders with movable rods extending through their central hole and fixed in elastic toroids filled with fluid with reciprocating motion pneumatic control in the cylinder, and the control unit switches them alternately with a frequency of 1-2 Hz.EFFECT: increased performance and improved quality of separation.1 dwg
Elastomeric composition having very good filler dispersion in elastomeric matrix // 2612743
FIELD: chemistry.SUBSTANCE: rubber composition is proposed, based on at least one diene elastomer, the reinforcing filler, the plasticizing hydrocarbon resin, as well as the curing system. The reinforcing filler comprises at least carbon black having a specific surface area STAV more than or equal to 130 m2/ g. The glass transition temperature of the hydrocarbon resin is more than 20°C, and its softening temperature is less than 170°C. The filler dispersion in the elastomer matrix has a Z index equal to or more than 70.EFFECT: good workability of the rubber composition without deterioration of limit properties under tension.17 cl, 2 tbl
Hot-melt adhesive for disposable products // 2612718
FIELD: chemistry.SUBSTANCE: invention relates to hot-melt adhesive, in particular to an adhesive which is suitable for use in disposable products. Adhesive contains: (A) propylene homopolymer with melting temperature of 100 °C or lower, obtained by polymerisation of propylene in presence of a metallocene catalyst; and (B) wax, modified with carboxylic acid and/or anhydride of carboxylic acid.EFFECT: hot-melt adhesive is suitable for application of coating with high rate, and is characterised by improved adhesion in moist condition and ability to form a coating at low temperature.4 cl, 2 tbl
ethod for producing film luminophore based on acrylic polymer // 2612705
FIELD: chemistry.SUBSTANCE: acrylic base is mixed with the isostationate hardener at the ratio of 1:1, from 0.5 to 2 wt % titanium nanodioxide with a grain size up to 50 nm is added. The mixture is maintained within 3-3.5 hours with continuous stirring, luminophore is added in an amount providing the necessary colour coordinates, and stirred for another 30-40 minutes. The luminophore is represented by Y3Al5O12:Ce, Lu3Al5O12:Ce, Gd3Al5O12:Ce. The mixture is then poured onto a polypropylene pad of a desired shape and maintained in air to the polymerization state. The film is separated from the polypropylene base and finally dried in a drying cabinet at 110-120°C.EFFECT: method improvement.4 cl, 1 tbl, 10 dwg, 3 ex
ethod for polymeric hydrogel preparation // 2612703
FIELD: chemistry.SUBSTANCE: polymer hydrogel is obtained by copolymerizing of an aqueous solution containing 1.0-4.0 wt % of acrylamide, 1.0-4.0 wt % of sodium acrylate, 0.04-0.06 wt% of N, N-methylenebisacrylamide and 2.5-3.0 wt % of sodium carbonate and then the polymer hydrogel is treated with a 5.0-10.0% aqueous solution of hydrochloric acid until pH of 1.5-2.0 is obtained, then treated with an aqueous solution containing biologically active substances.EFFECT: process time reduction from 30-40 hours to 3,5-4,5 hours.1 tbl, 4 ex
Protective material and protective products of such material // 2612696
FIELD: textile, paper.SUBSTANCE: protective material for work in the conditions of external influences, such as electromagnetic field radio frequency bands, electric field of industrial frequency, and switching and stepping voltage and/or electric arc, is made of conductive fabric composed of filaments on the basis of meta-aramid fibers based on poly m-phenylene isophthalamide and/or its derivatives and a stainless metal staple and/or monofilament fibers in a ratio of 70:30 to 30:70 pts. wt. respectively, with a density of 250 to 400 g/m2 and heat resistance at not less than 13 cal/cm2 minimum density. Stainless metal fiber for providing corrosive resistance is made of stainless iron-based steel alloy with an additive selected from a number of chromium, nickel, titanium, carbon, manganese, copper, boron, vanadium, niobium, aluminum, tungsten, molybdenum. The fabric is adapted to coloring by using an appropriate hue aramid fiber and a linen weaving (1/1) or broken twill (2/1 or 3/1) are usually used. The protective product is made in the form of a garment, or hat, or hood, or helmet, or screened helmet, or shoes, or protective cover, or shoe covers, or gloves, or mittens, or socks.EFFECT: invention allows for the possibility of wet washing without loss of protective properties and protect against electrical and thermal injuries when hitting an electric arc in a person.8 cl, 1 dwg
Cold method for producing extra strength stone mastic asphalt concrete for repairing and setting up layers of road surface // 2612681
FIELD: transportation.SUBSTANCE: method involves preparing a mixture with use of mineral material in the form of rock rubble, sand residues of rock rubble, and mineral powder by means of mixing them with cement and bitumen emulsion, with the subsequent coating of the road surface with the mix and its packing. The mixing is done by successively introducing the following components to the cold mineral material, wt %: cement - 3.0-6.0, nanopolymeric water soluble additive with the particle size of 50-300 nm, a latex containing styrene-based copolymer with polar monomers or butadiene, acrylic or methacrylic acid as dry matter - 0.1-0.5, nonionic surfactants from theethoxylated higher fatty alcohols or alkylphenols class - 0.05-0.1, cationic bitumen emulsion as bitumen - 3.0-5.0.EFFECT: improved physical and mechanical properties of asphalt pavement and better eco-friendliness of the process.4 tbl, 7 ex