Carboxylic acids and metal salts thereof and anhydrides thereof (C08K5/09)

Processed fillers, compositions containing them, and products produced from them // 2642795
FIELD: chemistry.SUBSTANCE: method of producing a treated filler comprises treating the suspension containing a raw filler that is not pre-dried using a treating composition containing a treating agent. The treating agent comprises at least one compound selected from an unsaturated fatty acid containing a linear or branched optionally substituted C4-C38alkyl having at least one carbon-carbon double bond; a derivative of the said unsaturated fatty acid, wherein at least one carbon-carbon double bond is reacted to include at least one functional group; and/or salts of the said unsaturated fatty acid. The untreated filler is selected from aluminium silicate, silica gel, colloidal silicon dioxide, precipitated silica, and mixtures thereof. The suspension of the treated filler is dried to obtain a treated filler.EFFECT: invention makes it possible to improve the compatibility of materials with a high specific surface area with the polymer matrix into which they are incorporated, to reduce the process viscosity and to prevent the phase separation of these materials and the polymer matrix.39 cl, 10 tbl, 2 ex

Polymeric hydrogels and methods for their preparation // 2641749
FIELD: pharmacology.SUBSTANCE: invention relates to a polymeric hydrogel comprising carboxymethyl cellulose and citric acid. This citric acid participates in the formation of cross-links in carboxymethylcellulose, wherein the said polymeric hydrogel has a swelling ratio of 50 to 300. The invention also relates to application of said hydrogel for use in the treatment of obesity in a patient in need thereof, as well as for the manufacture of a medicament for obesity treatment in a patient in need thereof.EFFECT: increased application efficiency.12 cl, 2 dwg, 8 tbl
Filled epoxy composition // 2640519
FIELD: chemistry.SUBSTANCE: composition contains, wt %: epoxy anhydride mixture 90-99.0 and nanoparticles of gallium oxides, either indium or thallium with sizes of up to 50 nm 1.0-10.0. The epoxy anhydride mixture contains epoxy resin ED-20, anhydride hardener - isomethyltetrahydrophthalic anhydride, plasticiser EDOS, accelerator UP-606/2 at a weight ratio of 100:80:5:1.5, respectively. The composition is pre-treated with ultrasound at a frequency of 22 kHz to uniformly distribute the nanoparticles in the volume of the composition.EFFECT: improved thermomechanical properties.1 tbl, 12 ex

ethod of producing composite materials as polymer matrices filled with nanoparticles of metal oxides with modified surface // 2638658
FIELD: chemistry.SUBSTANCE: for the production of composite materials, the surface of the original BaTiO3 nanoparticles is preliminarily activated by the application of hydroxyl groups by boiling in a hydrogen peroxide solution and modified with cationic surfactant molecules by treatment with a solution of a cationic surfactant at a concentration below the critical micelle concentration. The resulting precipitate is filtered, washed from the cationic surfactant unbound to the surface of the metal oxide nanoparticles, and dried. The nanoparticles BaTiO3 with a modified surface are introduced into the polymer solution, achieving the desired volume ratio of the filler and the polymer matrix, and subjected to ultrasonic dispersion.EFFECT: simplification of the method of producing composite materials in the form of polymer matrices filled with nanoparticles of oxide ferroelectrics with a modified surface, allowing to reduce the degree of aggregation of nanoparticles in the polymer.3 dwg
High-density vibro-damping elastomeric materials // 2637689
FIELD: chemistry.SUBSTANCE: invention relates to the production of high-density vibro-damping elastomeric materials used to reduce or eliminate vibrations. A vibro-damping elastomeric material contains, wt %: a mixture of butadiene-nitrile rubber with a content of acrylic acid nitrile of 17-20 % - 10-30 and butadiene-nitrile rubber with the content of acrylic acid nitrile of 36-40 % - 10-30, a curing system - 1.8 to 12.0, filler lithopone or barium sulfate, or chalk - 25-70, resin - 0.5-2.0 and pigments - 2-12.EFFECT: invention makes it possible to improve the physicomechanical, vibro-damping properties and to increase the oil and petrol resistance of the material.5 cl, 2 tbl

ethod for producing stabilized amorphous calcium carbonate // 2637019
FIELD: chemistry.SUBSTANCE: method for producing amorphous calcium carbonate (ACC) comprises combining an aqueous solution containing a soluble calcium salt and the first stabilizing agent with an aqueous solution containing a soluble carbonate to form an ACC suspension. Further, a water miscible organic solvent and a solution containing the second stabilizing agent are added simultaneously or sequentially in any order. The second stabilizing agent and the organic solvent are brought into contact with the ACC suspension within about 2 minutes after its formation to produce a stabilized ACC suspension. The first and the second stabilizing agents are the same or different. The total amount of the stabilizing agent is up to about 12 wt % of the stabilized ACC suspension weight. The organic solvent miscible with water is, at least, 5 wt % of the stabilized ACC suspension weight.EFFECT: invention allows to increase the stability of amorphous calcium carbonate, which is in the form of a suspension in the aqueous phase or in the form of a powder.25 cl, 4 dwg, 6 ex
Epoxide composition // 2633905
FIELD: chemistry.SUBSTANCE: composition contains an epoxy anhydride mixture and alumina nanoparticles with dimensions of 5-20 nm with the following component ratio (wt %): epoxy anhydride mixture 70.0-99.5, alumina nanoparticles 0.5-30.0. The composition is pretreated with ultrasound at a frequency of 22 kHz for a time allowing a uniform distribution of the nanoparticles in the volume of the composition. The epoxy-anhydride mixture contains an epoxy diane resin ED-20, an anhydride hardener-iso-methyltetrahydrophthalic anhydride (iso-MTHA), an EDOC plasticiser, an UP-606/2 accelerator at a ratio (parts by weight) of ED-20 epoxy resin: iso-methyltetrahydrophthalic anhydride (iso-MTHA): plasticiser EDOS: accelerator UP-606/2 - 100:80:5:1.5 respectively.EFFECT: increased tribological and mechanical properties, improving the quality of products from the composition and expanding the scope of the composite due to the homogeneity of the structure.1 tbl, 9 ex
Oil-and-petrol resistant rubber mixture // 2633892
FIELD: chemistry.SUBSTANCE: mixture contains butadiene-nitrile rubber SKN 4045, isoprene rubber SKI-3, methylstyrene rubber SKMS-30 ARC, cis-butadiene rubber, sulfur, dibenzthiazolyl disulphide, tetramethylthiuram disulfide, zinc oxide, anti-corrosion ZPR, stearic acid, acetonanil H, resin "Shinplast", bitumen oil, technical carbon H 220, talc, dibutyl sebacate.EFFECT: expanding the temperature range of the operability of rubber parts, increasing the resistance to repeated bending without disturbing the structure of parts, reducing the change in mass of oil, oil and fuel environment while maintaining high tensile strength and elongation at break.2 tbl

Composition, filled with polyolefin and actinide powder // 2632020
FIELD: chemistry.SUBSTANCE: described the composition for nuclear fuel, filled with the actinide powder, containing the organic matrix and the actinide powder or the mixture of actinide powders, characterized in that it contains at least: the plasticiser with alkane, in which the chain of the longest radical contains at least several tens of carbon atoms, and presented in the volumetric content from 20 to 70% relative to the total volume of only organic compounds; the binder, containing at least the polyolefin polymer, which is the low density polyethylene and/or polypropylene, and it is present in the volumetric content from 20 to 50% with respect to the total volume of only organic compounds; the dispersing agent, containing the carboxylic acid or its corresponding salts and presented in the volumetric content of less than 10% with respect to the total volume of only organic compounds. The above mentioned actinide powder or the above mentioned mixture of actinide powders is from 40 to 65 volume % with respect to the volume of the filled matrix.EFFECT: produced composition, containing the actinide powder, which makes it possible to perform the powders injection moulding.13 cl, 4 tbl, 10 dwg
Composition for low-combustible plasticate // 2631881
FIELD: chemistry.SUBSTANCE: composition for low-combustible plasticate contains dioctyl phthalate, calcium stearate, tribasic lead sulfate, ED-20 epoxy resin, diphenylolpropane, trichloropropyl phosphate, carbon black and EP 6602-C emulsion PVC.EFFECT: provision of plasticate fire resistance while maintaining its strength characteristics.2 tbl
ethod for production of composition for oil-benzine-resistant plasticate // 2631880
FIELD: chemistry.SUBSTANCE: method for preparation of a composition for oil-and-benzine-resistant plasticate involves mixing of polyvinyl chloride, dioctyl phthalate, calcium stearate, tribasic lead sulfate, epoxy resin, composition preparation, and subsequent plasticate preparation. Trichloroethyl phosphate or trichloropropyl phosphate is introduced into the mixture, the mixture components are mixed under normal conditions, the composition is prepared by resulting mixture swelling for 5 hours at 80°C and adding of BNKS-33 butadiene-nitrile rubber, and the plasticate is produced by the resulting composition extrusion and granulation.EFFECT: increased oil and benzine resistance and fire resistance of plasticate while maintaining its strength characteristics.1 tbl, 8 ex
Composition for oil-benzine-resistant plasticate // 2631879
FIELD: chemistry.SUBSTANCE: compositions for cable plasticate contain dioctyl phthalate, calcium stearate, tribasic lead sulfate, ED-20 epoxy resin, BNKS-33 butadiene-nitrile rubber and EP 6602-C emulsion polyvinyl chloride.EFFECT: increased plasticate oil and petrol resistance while maintaining its strength characteristics and thermal stability.2 tbl
Rubber mixture // 2630562
FIELD: chemistry.SUBSTANCE: rubber mixture contains the components at the following ratio, the mass parts: epichlorohydrin rubber T-3000 (20-100), epichlorohydrin rubber T-6000 (20-100), vulcanizing agent - sulfur (1.5-2.0), accelerators - captax (1.5-2.0) and tiuram (1.5-2.0), the activator - zinc oxide (2.5-3.0), the filler - carbon black N 220 (25.0-30.0), plasticiser - stearin (0.5-1.0) and norman 346 (2.5-3.0), the technological additive - sorbitan monostearate (1.5-2.0).EFFECT: improvement of the conditional tensile strength, elongation at break, tear resistance, and rubber resistance to sea water over the wide temperature range.2 tbl

Production of transition metal carboxylates // 2629943
FIELD: chemistry.SUBSTANCE: method is proposed for producing transition metal carboxylate compounds by combining a transition metal precursor compound and a group 1 or a group 2 metal carboxylate in a polar aprotic first solvent in essentially acid-free and substantially anhydrous conditions to form a mixture comprising a transition metal carboxylate composition. The invention also relates to a transition metal carboxylate composition for use as a component of a catalyst system for the oligomerization of olefins produced by a process that comprises contacting in substantially anhydrous and substantially acid-free conditions: 1) a transition metal precursor compound having the formula (MB) y1Xx1Lt, where MB is Cr of oxidation state +x, where x is an integer from+1 to +6, each X is independently an anionic ligand with charge y, and each X is independently halide, nitrate, sulfate or phosphate; each L independently represents C2-C40 ether, C2-C40thioether, C2-C20 nitrile, C1-C60 amine or C3-C60phosphine; ℓ is an integer from 0 to 7; and x*y1=|y*x1|; 2) C3-C25 carboxylate of the group 1 or the group 2 metal, and 3) the first solvent comprising C2-C40 ether, C2-C40 thioether, C2-C20 nitrile, C1-C60 amine, C3-C60 phosphine, or any combination of these compounds, to obtain the transition metal carboxylate. If desired, the transition metal carboxylate composition can be purified, for example, by substantially complete removing the first solvent to produce a residue containing the transition metal carboxylate composition, and also optionally by further extracting the transition metal carboxylate composition from the residue using a noncoordinating second solvent to produce an extract containing a transition metal carboxylate composition.EFFECT: improving the productivity and selectivity of catalytic systems and reducing their cost.35 cl, 21 dwg, 8 tbl, 7 ex
Insulating material // 2629175
FIELD: electricity.SUBSTANCE: insulating material includes suspension polyvinyl chloride (PVC), dioctyl phthalate (DOP), filler - chalk, a blend of stabilizers based on three-phase lead sulfate (TPLS), Bisphenol a and Epoxidized soybean oil (ESO), lubricants-stearic acid and calcium stearate, flame retardants-smoke suppressors of zinc borate and antimony oxide, as well as nanomodifier of montmorillonite clay.EFFECT: reduced flammability, smoke and hydrogen chloride when burning.2 tbl

Composition filled with actinoid powder and aromatic polymer and/or polymethyl methacrylate // 2628599
FIELD: chemistry.SUBSTANCE: composition contains an organic matrix and an actinide powder or a mixture of actinide powders. Thus it comprises at least a plasticiser comprising an alkane, which is the longest radical chain comprises at least twenty carbon atoms, and the volume fraction of the plasticiser is from 20 to 70% of the total volume of only organic compounds, the binder comprising at least one aromatic polymer and/or methacrylate present in volume fraction from 20 to 50% of the total amount of organic compounds, and a dispersing agent comprising a carboxylic acid or its salt, a volume of which is less than 10% of the total organic compounds. In this case, said actinide powder or said mixture of actinide powders is 40 to 65 vol % of the volume of the filled matrix.EFFECT: preparation of compositions filled with an actinide powder that are capable of withstanding radiolysis phenomena and are compatible with the properties necessary for passing the process for forming actinide powders by the MPI method.13 cl, 17 dwg, 3 tbl
Polymeric composition for high-frequency energy absorbtion // 2627401
FIELD: chemistry.SUBSTANCE: polymer composition for high-frequency energy absorption includes, mass parts: low-molecular synthetic dimethylsiloxane SKTN A grade 15-25, the iron carbonyl radio engineering R-10 105-175, cold curing catalyst No. 1 1.2-1.8, ethyl silicate-40 1.5-2.5, oleinic acid 0.5-0.9.EFFECT: increase of vitality and elasticity, higher microwave signal wave attenuation.2 tbl, 3 ex
Polymer composition // 2625858
FIELD: chemistry.SUBSTANCE: rubber mixture contains the components at the following ratio, wt %: synthetic isoprene rubber 18.7-24.021; synthetic butadiene rubber 6.005-7.547; synthetic rubber butadiene styrene 18.02-18.87; zinc oxide 1.802-1.887; sulfur technical 0.601-0.943; sulfenamide C 0.300-1.132; stearic acid 1.201-1.132; technical carbon P234 6.005-7.547; technical carbon P514 22.64-24.02; glass of ground fraction 50-100 microns 5.660-6.005; a mixture of fullerenes of fraction C50-C92 0.001-0.015; acetononyl H 1.132-1.201; wax VIZ 1.802-1.887; oil for oil PN 3.003-3.019; bitumen petroleum alkaline 6.005-7.547.EFFECT: invention allows to manufacture specialty rubber products with high frictional resistance, with improved physical and mechanical characteristics and the ability to work in aggressive environments.2 tbl, 3 ex
Antimicrobial polymer composition // 2625468
FIELD: pharmacology.SUBSTANCE: in the antimicrobial polymer composition comprising the polyguanidine compound, polyhexamethylene guanidine stearate is used as the polyguanidine compound, calcium stearate and 1,3,6,8-tetraazatricyclo [4,4,1(1,6),1]dodecane (Sign "Dezant"). In addition, the antimicrobial polymer composition further comprises citric acid or the sodium salt of dihydracetic acid, or a mixture thereof in an equimolar ratio of 0.5-2.0 wt %.EFFECT: increased antimicrobial activity, increased operational and consumer characteristics.2 cl, 5 tbl
Composite anti-filtration material based on secondary polyethylene // 2625448
FIELD: chemistry.SUBSTANCE: material is made of a mixture containing 93-96 wt % of secondary polyethylene, 1-6 wt % of carbon-graphite fiber crushed to the size of 1 mm pre-treated with an aqueous solution of maleic acid with a concentration of 30 wt % and a dried surface and 2.5-3 wt % of a carbon black stabiliser.EFFECT: increased strength with minimal consumption of carbon-graphite fiber.2 cl, 2 dwg, 1 tbl
Composite oil-swellable material // 2625108
FIELD: chemistry.SUBSTANCE: composite oil-swellable material includes, pts. wt.: butadiene-nitrile rubber with the content of nitrile acrylic acid 17-20% - 40.0-50.0, isoprene rubber SKI-3 - 50.0-60.0, sulfur - 0.5-0.9, sulfenamide C - 1.5-2.5, N, N'-dithiodimorpholine - 1.5-2.5, tiuram D - 1.5-2.5, anti-seizure "ZPR" - 0.3-0.5, zinc oxide 2.5-3.5, zinc stearate 4.0-5.0, stearic acid 1.0-2.0, naphtham-2 1.5-2.0, technical carbon H 220-25.0-3.0, taurite TS-D - 14.0-16.0, resin "Shinplast" - 4.0-5.5, oxanol CS-100 - 2.0-3.0, dibutyl phthalate - 3.0-4.0, industrial oil I-12A - 24.0-32.0, trans-polynorbornene - 6.0-8.0.EFFECT: invention makes it possible to improve the tensile strength of the material and to achieve a certain degree of its volumetric swelling in petroleum, oil and fuel.2 tbl
Vulcanized compositions based on epoxy-containing group of nitrile rubber // 2622655
FIELD: chemistry.SUBSTANCE: composition comprises at least one epoxy group containing nitrile rubber which contains repeating units of one conjugated diene, at least one α,β-unsaturated nitrile and optionally one or more other copolymerizable monomers, but which lacks repeating units of nonconjugated cyclic polyenes; as crosslinking agent at least one Lewis acid; and at least one cross-linking accelerator selected from the group consisting thiurams, ksatogenaty, thiourea, dithiocarbamates and carbamates.EFFECT: invention produces vulcanizates with favorable performance compression set at room temperature, and at the same time a high tensile stress and elongation at break optimal.6 cl, 14 tbl, 4 ex
Vulcanized rubber mixture for manufacture of light rubber // 2620060
FIELD: chemistry.SUBSTANCE: vulcanized rubber compound for the manufacture of light rubbers contains, in parts: SKY-3 rubber 100.0; sulfur 1.0; diphenylguanidine 3.0; altaks 0.60; zinc oxide 5.0; stearic acid 1.0; complex antioxidant 1.0-2.0. The complex antioxidant includes, wt %: 2.2-methylenebis(4-methyl-6-t-butylphenol) 44.00-36.00; ε-caprolactam 43.00-35.00; zinc oxide 5.00-4.50; salicylic acid 16.50-15.50.EFFECT: invention makes it possible to obtain bright vulcanizates that have a long-term resistance to thermal and oxidative aging.3 tbl
Vulcanized rubber mixture for manufacture of light rubber // 2620059
FIELD: chemistry.SUBSTANCE: vulcanized rubber composition for making light rubbers comprises the following components by wt h: 100.0 natural rubber; sulfur 2.50; diphenyl 0.37; kaptaks 0.48; zinc oxide 55.0; titanium white 55.0; stearic acid 1.0; ultramarine 0.073; phthalic anhydride 0.50; protective wax YaV 1 1.80-2.10; comprehensive antioxidant 1.0-2.0. The complex antioxidant includes, wt %: 2.2-methylenebis(4-methyl-6-t-butylphenol) 44.00-36.00; ε-caprolactam 43.00-35.00; zinc oxide 5.00-4.50; salicylic acid 16.50-15.50.EFFECT: invention makes it possible to obtain bright vulcanizates that have a long-term resistance to thermal and oxidative aging.3 tbl
Complex anti-aging agent for rubber // 2620058
FIELD: chemistry.SUBSTANCE: invention relates to the preparation of a complex antioxidant for rubbers, which provides the latter with high physical and mechanical properties and their preservation during thermal oxidative aging. The invention can be used in the rubber industry to provide thermal and oxidative resistance to rubbers for a long time of their operation. Complex antioxidant for rubbers contains ε-caprolactam, salicylic acid, zinc oxide, 2,2-methylenebis (4-methyl-6-t-butylphenol).EFFECT: increase of its activating influence on the rubber vulcanization process of rubber compounds and increase of vulcanizate resistance to thermal and oxidative aging while maintaining high physical and mechanical properties.3 dwg, 3 tbl
Polyurethane rubber mixture (versions) // 2619705
FIELD: chemistry.SUBSTANCE: polyurethane rubber mixture in the first version was obtained on the basis of saturated urethane rubber, 100 wt p of which includes stearic acid in an amount of 1.0 parts by weight, di-tert-butyl peroxyisopropylbenzene in an amount of 12.5 wt p and carbon black in an amount of 42.0 wt p in the second version, the polyurethane rubber mixture is obtained on the basis of saturated urethane rubber, per 100 wt p which includes stearic acid in an amount of 1.0 wt p, di-tert-butyl peroxyisopropylbenzene in an amount of 12.5 wt p, silica filler in an amount of 35.0 wt p and iron-oxide pigment in an amount of 3.0 wt p.EFFECT: reducing the explosion hazard of the production process.3 cl, 2 tbl, 3 ex
ethod for producing electrical insulating compound // 2617165
FIELD: electricity.SUBSTANCE: to produce electrical insulating compound, polyolefin - a high-density polyethylene, an inorganic filler with a polar surface - talc, flame retardants with a polar surface - decabromodiphenyl oxide (DBDPO) and antimony oxide, stabilizers with an apolar surface - calcium stearate and richnox 1010 are blended with the following ratio, wt %: 49.6-71.6 of high density polyethylene; 15.0-40.0 of talc; 7-9 of DBDPO; 3-4 of antimony oxide; 0.2 of calcium stearate; 0.2 of richnox 1010. The filler and flame retardants are previously dried at 105°C to completely dry state.EFFECT: invention provides for a homogeneous electrical insulating compound, to eliminate non-uniform mixing of polymer, filler and flame retardants.4 tbl, 2 ex
Rubber mixture // 2617101
FIELD: chemistry.SUBSTANCE: rubber mixture contains components at the following ratio, mass parts: chloroprene rubber (100), vulcanizing agents - zinc oxide (4.0-5.0) and magnesium oxide (3.0-4.0), vulcanization accelerators - diphenylguanidine (0.5-1.0), thiuram D (0.5-1.0) and sulfur (0.5-1.0), filler - carbon black P 803 (27.0-30.0), filler dispersant - stearic acid (0.5-1.0), scorch retarder - laundry soap (4.0-5.0), hydrophilic additive - methylcellulose MC-2000 (25.0-27.0) and/or polyacrylate sodium (25.0-27.0).EFFECT: improved tensile strength and hardness of rubber based on chloroprene rubber.2 tbl
Epoxy binder for producing self-extinguishing fiberglasses by pultrusion method // 2614701
FIELD: chemistry.SUBSTANCE: binder includes halogen-containing epoxy resins, a curing agent and a curing accelerator. The binder also includes a bismaleimide-modified epoxy resin, an active solvent - 3-glycidyloxypropyltrimethoxysilane, halogenated epoxy resins represented by a brominated epoxy resin representing a condensation product of epichlorohydrin and tetrabromopropanediphenylol, coupled with a tetrafunctional chlorine-containing epoxy resin, a curing agent represented by isomethyltetrahydrophthalic anhydride and target additives in the following ratio, mass parts: bromine-containing epoxy resin - 67-75, tetrafunctional chlorine-containing epoxy resin - 9-25, bismaleimide-modified epoxy resin - 7-25, active solvent - 0.9-8.7, curing agent - 58-73, curing accelerator - 0.1-2, target additives - 0.5-3.0.EFFECT: reduced epoxy binder flammability.2 tbl, 2 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

Nonwoven materials binding resin, particularly for bituminous membranes bases making, preparation method thereof and non-woven material produced using said resin // 2609164
FIELD: construction.SUBSTANCE: invention relates to construction and used for roofing, at floors covering, heat insulation and sound insulation, namely, to non-woven materials binding resin, particularly for bituminous membranes bases making. Non-woven materials binding resin consists of starch based aqueous solution, cross-linking agent of natural origin, selected from group of polycarboxylic acids of natural origin, and catalyst selected from group of phosphorus-containing acid alkali metals salts.EFFECT: invention allows to create binding resin, completely consisting of natural and ecologically acceptable origin materials.21 cl, 8 dwg, 8 tbl
Curable compositions // 2607746
FIELD: chemistry.SUBSTANCE: invention relates to curable compositions of epoxy resin, suitable for making an insulator for a high-voltage gas-insulated switchgear. Invention includes (A) epoxy resin composition containing a mixture of: (A1) at least one solid epoxy resin, (A2) of at least one novolac epoxy resin, and (A3) at least one cycloaliphatic epoxy resin; (B) at least one anhydride hardener; (C) at least one filler; and (D) optionally at least one catalyst or at least one accelerator. Composition has a ratio of epoxy groups to anhydride groups from 1:0.75 to 1:0.85.EFFECT: invention increases mechanical strength and hardness of composition.14 cl, 1 tbl, 3 ex

ethod for production of packing material coated with at least one barrier layer for hydrophobic compounds // 2606981
FIELD: packaging industry.SUBSTANCE: invention relates to a method of production of packing material with coating (10), which includes at least the following stages: a) obtaining substrate (12), which includes main material (14) from cellulose, outer side (16) turned from the product, which is been packed, as well as inner side (18) turned to the product been packed; b) coating inner side (18) of the substrate with at least one layer of an aqueous composition, which includes at least polyvinyl alcohol and a cross-linking agent and has the maximum content of solid substances of 25wt%: c) drying the layer and cross-linking the polyvinyl alcohol with the help of the cross-linking agent to form barrier layer (22a, 22b) for hydrophobic compounds. Also described is packaging material (10), where barrier layer (22a, 22b) contains a cross-linked polyvinyl alcohol arranged on inner side (18) of main material (14).EFFECT: technical result is preventing migration of hydrophobic hydrocarbons through the packing material according to measurement by gas chromatography by more than 99 %, and therefore for mineral oil it is always lower than 0,6 mg/kg of a packed food product.22 cl, 1 dwg, 1 tbl, 10 ex
Epoxy vinyl ester composition for making articles from polymer composite materials by vacuum infusion // 2606442
FIELD: chemistry; manufacturing technology.SUBSTANCE: invention relates to epoxy vinyl ester composition and can be used for making articles from polymer composite materials by vacuum infusion, including using filler made by weaving, in automotive industry, chemical machine building, power, construction, machine building, ship-building, aviation industries and other industries. Composition contains an epoxy vinyl ester base containing epoxy vinyl ester resin, initiator, phenol-type inhibitor and peroxide-type curing agent – organic peroxide based on methyl ethyl ketone. Epoxy vinyl ester base as initiator contains cobalt octoate and additionally contains modifiers – polyisocyanate, surfactant and elasticiser.EFFECT: providing preservation of viscosity and gel-forming time of composition during prolonged storage at temperature 25 °C and high strength at static flexure.11 cl, 4 tbl, 12 ex
Adhesive system // 2605134
FIELD: chemistry.SUBSTANCE: invention relates to an adhesive system comprising (a) component-resin containing melamine-urea-formaldehyde resin in which amount of melamine, expressed in form of M/(M+U) varies from 30 to 60 wt%, and molar ratio F/NH2 varies from 0.6 to 0.79, and (b) a curing component containing at least one acid, acid-forming salt or acid salt and does not contain or contains less than 15 wt% urea. Invention also relates to its application, method of producing wood-based article and articles obtained using said method.EFFECT: technical result is providing an adhesive system containing melamine-urea-formaldehyde resin with low or zero level of release of formaldehyde, but is effective as an adhesive for wood without need to spend very considerable time on pressing or application of high temperature.14 cl, 5 tbl, 1 ex

Vulcanized compositions based on epoxy groups containing nitrile rubbers // 2604218
FIELD: chemistry.SUBSTANCE: invention relates to vulcanized compositions based on epoxy groups containing nitrile rubbers. Vulcanized composition in the solid form contains nitrile rubber with epoxy groups, which contains repeating links, conjugated diene derivatives and α,β-unsaturated nitrile. As a cross-linking agent the composition contains Lewis or Brensted acid. Herewith the amount of other cross-linking agents is less than 2.5 wt% per 100 wt% of nitrile rubber with epoxy groups.EFFECT: vulcanizates as per the invention have extremely low residual compression at room temperature, 100 °C and 150 °C and are characterized by high tension stress and high breaking elongation.14 cl, 22 tbl

Rubber mixture based on butadiene-methylstyrene rubber // 2603366
FIELD: rubber industry.SUBSTANCE: invention relates to rubber industry, in particular to development of rubber mixture based on butadiene-methylstyrene rubber, products from which are characterized by higher heat and fire resistance. Rubber mixture based on butadiene-methylstyrene rubber contains curing agent, mixture of curing accelerators, zinc oxide, organic curing activator, modifying additive and filler, wherein as mixture curing accelerators mixture of dibenzothiazyl disulfide and diphenyl guanidine is used, and as modifying additive is pre-treated with aniline pearlite in following ratio of components, wt. parts: butadiene-methylstyrene rubber - 100.0; sulphur - 2.0; zinc oxide - 5.0; stearic acid - 2.0; dibenzothiazyl disulfide - 1.5; diphenylguanidine - 0.3; technical carbon P324 - 40.0; said pearlite - 10.0.EFFECT: invention enables to produce vulcanizate based on butadiene-methylstyrene rubber, having higher heat- and fire-resistance.1 cl, 2 tbl

Rubber mixture based on butadiene-methylstyrene rubber // 2603365
FIELD: rubber industry.SUBSTANCE: invention relates to rubber industry, in particular to development of rubber mixture based on butadiene-methylstyrene rubber, products from which are characterized by higher heat and fire resistance. Rubber mixture contains butadiene-methylstyrene rubber, curing agent, sulphur, mixture of curing accelerators, zinc oxide, organic curing activator, stearic acid, modifying additive and filler, technical carbon. At that, as mixture curing accelerators mixture of dibenzothiazyl disulfide and diphenyl guanidine is used, and as modifying additive is pre-treated with diethylene glycol pearlite in following ratio of components, pts. wt: butadiene-methylstyrene rubber - 100.0; sulphur - 2.0; zinc oxide - 5.0; stearic acid - 2.0; dibenzothiazyl disulfide - 1.5; diphenylguanidine - 0.3; technical carbon P324 - 40.0; said pearlite - 10.0.EFFECT: invention enables production of vulcanizate based on butadiene-methylstyrene rubber, having higher heat- and fire-resistance.1 cl, 2 tbl

onobenzoate suitable for use as plasticizer in adhesive compositions // 2601458
FIELD: chemistry.SUBSTANCE: invention relates to a monobenzoate plasticizer, namely to 3-phenylpropyl-benzoate suitable for use as a plasticizer in dispersions of polymers, to polymer adhesive compositions, including water and solution based, as well as the ones suitable for use in packing adhesives, mounting adhesives, in laminates, envelopes, packs for food products, carpentry adhesive, structural adhesives, for assembling electronic articles containing the said monobenzoate plasticizer, to mixtures of plasticizers containing the said monobenzoate plasticizer, latex adhesive, a packing and sealing composition containing the said monobenzoate plasticizer, to a method for providing the viscosity characteristic, improving the film setting time at the edges when using the said monobenzoate plasticizer. Monobenzoate corresponding to the present invention is a non-phthalate alternative plasticizer with low content of volatile organic compounds, compatible with multiple various polymers. Advantages provided by using the monobenzoate corresponding to the present invention cover, inter alia, excellent viscosity characteristic, low viscosity, stability of viscosity, improved rheological properties, good film-formation and comparable or improved adhesion, peeling strength, setting time, film setting time at the edges, chalking temperature and minimum temperature of film forming in comparison with corresponding parameters provided by traditional plasticizers.EFFECT: monobenzoate corresponding to the present invention also has excellent characteristics with respect to sanitation, safety and environmental protection and represents a viable alternative to adhesives used in applications including contacting with food products, for example, when packing food products, where transfer of adhesive is a problem.10 cl, 62 dwg, 11 ex

ethod of producing calcium stearate // 2599572
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing calcium stearate, used as a stabiliser in formulations of plastic compounds of polyvinyl chloride and processes for production of paint materials. Method involves reaction of stearic acid and calcium hydroxide, with heating and intense stirring, process is carried out using an aqueous solution of calcium hydroxide in presence of a surfactant in water or water-alcohol-acetone medium in volume ratio water:alcohol:acetone = 1-2:1-1.6:1, first while stirring at temperature 20-90 °C for 0.5-2 h with subsequent holding at 95-100 °C for 0.5-0.8 h, wherein during process in a water-alcohol-acetone medium mixing of mixture of stearic acid, water, alcohol and acetone is carried out at room temperature or temperature of 25-40 °C in presence of a surfactant, then temperature of mixture is raised to 80-85 °C, followed by dosing 28-35 % aqueous solution of calcium hydroxide, mixture is stirred at temperature 80-90 °C and held at 95-100 °C; and when carrying out process in an aqueous medium mixing is carried out at temperature 80-90 °C in presence of a surfactant and holding is carried out at 95-100 °C.EFFECT: efficient method of producing calcium stearate.1 cl, 1 tbl, 9 ex

Resin composition, method for production thereof and multilayered structure // 2599297
FIELD: chemistry.SUBSTANCE: invention relates to a resin composition, a method for production thereof and multilayer structures, including at least one layer of resin composition. Resin composition contains (A) an ethylene-vinyl alcohol copolymer, (B) at least one representative selected from a group consisting of carboxylic acid and carboxylate ion; and (C) a metal ion, where component (B) contains (B2) at least one representative selected from a set consisting of a compound having at least two carboxyl groups per molecule, and an anion of said compound. Molar ratio (B2/C) between compound having at least two carboxyl groups per molecule, or anion of compound (B2) and metal ion (C) ranges from 0.002 or more to 2 or less.EFFECT: technical result is excellent characteristics of appearance and long-term processability during melt spinning, which enables inhibition of yellowing during melt spinning, in particular, even during melt spinning at high temperatures, not lower than, for example, 260 °C.23 cl, 14 tbl, 1 dwg, 59 ex

Water soluble polymer powder formulation having improved dispersing properties // 2598932
FIELD: chemistry.SUBSTANCE: invention relates to water-soluble powdered polymer compositions, which in powdered form can be used for direct addition to aqueous systems to obtain homogeneous, lump-gree solutions. Storage-stable composition of cellulose ether, which is dispersed in water without formation of lumps, includes a) a crosslinked cellulose ether crosslinked with a cross linker having a first reactive moiety and a second reactive moiety, said first reactive moiety being an aldehyde; and b) a partially neutralised polybasic carboxylic acid, effective for endowing said cellulose ether, crosslinked by said cross linker, with dissolution stability at temperature of 60 °C for at least 3 days.EFFECT: selected acid has no adverse effect on dissolution stability.19 cl, 7 dwg, 1 tbl

Rubber adhesion promoter to textile cord // 2596251
FIELD: chemistry.SUBSTANCE: invention relates to production of complex adhesion promoter for rubber and can be used in tyre and rubber industry. Promoter consists of ε-caprolactam, N-isopropyl-N-phenyl-n-phenylenediamine and zinc oxide. Herewith it additionally contains maleic anhydride and calcium oxide, and ε-caprolactam and N-isopropyl-N-phenyl-n-phenylenediamine are used in the form of eutectic melt obtained beforehand in the following proportions, wt%: eutectic melt of ε-caprolactam-N-isopropyl-N-phenyl-n-phenylenediamine - 44.00-50.00, zinc oxide - 29.00-32.00, maleic anhydride - 16.00-20.00, calcium oxide - 3.00-4.50.EFFECT: technical result is higher strength of rubber bounding with textile cord and its stability under conditions of thermal-oxidative ageing, as well as improved physical and mechanical properties of vulcanized rubber.1 cl, 3 tbl, 3 ex

Rubber mixture, method of making rubber-metal composite article, rubber-metal composite article, tyre, industrial belt and rubber caterpillar // 2595732
FIELD: machine building.SUBSTANCE: group of inventions relates to machine building, specifically to rubber-metal composite articles. Method of making rubber-metal composite article involves treating surface of metal material by contacting with a buffer solution and attachment of rubber mixture to metal material subjected to surface treatment. Rubber mixture contains a cobalt compound in an amount in terms of cobalt of 0.0025-0.05 pts.wt per 100 pts.wt rubber component. Rubber-metal composite article is made according to method of making rubber-metal composite article. Tyre comprises rubber-metal composite article. Proposed belt comprises rubber-metal composite article. Rubber caterpillar track includes rubber-metal composite article.EFFECT: higher strength of article due to production of rubber mixture with suitable initial adhesion properties.7 cl, 1 tbl

Rubber composition and tyre made with said composition, and method of producing rubber composition // 2593305
FIELD: chemistry. SUBSTANCE: invention relates to rubber composition. Composition contains in 100 weight parts of rubber component at least 10 weight parts of polymer component (B) containing residual organic acid (A), added in the process of producing said polymer, and containing 5-90 weight parts of modified polymer (F) containing in its molecular structure modified part (E) capable to interact with the filler surface during mixing. Rubber composition also contains 10-150 weight parts reinforcing filler (C) and 6 weight parts or less than total amount of residual organic acid (A) and an organic acid (D) used in mixing for 100 weight parts of rubber component. EFFECT: invention reduces hysteresis losses composition, as well as reducing heat generation and improving tire abrasive wear resistance. 38 cl, 91 ex, 12 tbl

Rubber mixture based on epichlorohydrin and propylene oxide rubbers // 2591157
FIELD: technological processes.SUBSTANCE: invention relates to rubber industry, in particular, to production of rubber mixtures for making articles for various purposes, and can be used for making large-sized moulded industrial rubber articles. Rubber mixture contains combination of epichlorohydrin and propylene oxide rubber, sulphur, thiuram D, captax, zinc oxide, magnesium oxide, stearin, dibutyl phthalate, technical carbon P 324, sorbitan monostearate as process additive.EFFECT: invention improves physical and mechanical properties of rubber due to better dispersion of components of the mixture and eliminate stickiness of rubber mix to working parts of process equipment.1 cl, 2 tbl

Composition of synthetic polymer for non-toxic windows from pvc and non-toxic window from pvc // 2585012
FIELD: chemistry.SUBSTANCE: invention relates to synthetic polymer composition for non-toxic PVC windows, as well as to non-toxic windows of PVC, synthetic polymer composition for non-toxic PVC window contains: (a) a stabiliser based on soap non-toxic metal; and (b) inorganic stabiliser based on non-toxic metal, which is a compound containing metal oxide or hydroxide-based inorganic substance, coated with metal, selected from a group of Li, Na, K, Mg, Ca, Al and Zn. Nontoxic PVC window, which is made using said synthetic polymer composition by mixing and extrusion.EFFECT: invention enables to obtain a composition for windows from PVC, which has an advantage in original painting, heat resistance and resistance to weather resistance and does not contain lead or cadmium-based stabilisers, harmful for human organism.17 cl, 1 dwg, 2 tbl, 7 ex
ethod for producing rubber mixture // 2582400
FIELD: chemistry.SUBSTANCE: invention relates to method of producing rubber mix containing inorganic filler and having improved characteristic of low heat emission. Method of producing rubber mixture which contains at least one rubber component (A) selected from natural rubber and diene rubber, obtained through emulsion polymerisation, filler containing inorganic filler (B) silane binding agent (C), at least, one vulcanisation accelerator (D) selected from guanidines, sulfenamides and thiazoles and connection of organic acid (E), containing organic acid contained in rubber component (A), in which rubber mixture is kneaded at several stages; rubber component (A), all or part of inorganic filler (B), all or part of silane binding agent (C), vulcanisation accelerator (D) and connection of organic acid (E) is kneaded at first kneading stage, where number of molecules X connection of organic acid (E) in rubber mixture at first step relative to amount of molecules Y accelerator (D) is expressed by following formula 0<X≤1.5×Y.EFFECT: above method of producing provides production of rubber mix with low heat release characteristic at effective preventing reduction of activity of binding capacity silane binding agent.16 cl, 16 tbl

Polyamide composition // 2579138
FIELD: chemistry.SUBSTANCE: invention relates to polyamide composition, capable of effective absorption of oxygen. Composition contains polyamide compound (A) and transition metal compound (B). Compound (A) contains 25-50 mol % of diamine, which contains diamine, selected from aromatic diamine, represented by formula alicyclic diamine, resented by formula and linear aliphatic diamine, represented by formula in the total quantity not less than 50 mol %; 25-50 mol % of dicarboxylic acid, which contains linear aliphatic dicarboxylic acid, represented by formula and/or aromatic dicarboxylic acid, represented by formula in the total quantity not less than 50 mol %; and 0.1-50 mol % of structural unit, represented by formula wherein m, n is integer number from 2 to 18, Ar is arylene group, R is substituted or non-substituted alkyl or aryl groups.EFFECT: sufficient efficiency of oxygen absorption without deterioration of transparency is provided.11 cl, 8 tbl, 19 ex

ethod for preparing chloroprene caoutchouc-based rubber mixture // 2577283
FIELD: chemistry.SUBSTANCE: method for obtaining chloroprene caoutchouc-based rubber mixture includes caoutchouc steaming at temperature 100°C for 1 hour, introduction of zinc oxide and magnesium oxide. Before mixing with mixture components caoutchouc is subjected to microwave exposure for 20 seconds with microwave frequency 2.45 GHz. Stearic acid and technical carbon are additionally introduced into mixture with component ratio, wt p: chloroprene caoutchouc- 100, zinc oxide - 5, magnesium oxide - 7, stearic acid - 0.5, technical carbon - 0.5.EFFECT: invention makes it possible to improve deformation-strength properties of rubber mixture vulcanisate.1 tbl, 2 ex
 
2551006.
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