Compositions of rubbers or of their derivatives (C08L7)

C08L7/02 - Latex(40)
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
Anti-corrosion compositions for zinc-containing primer coating, containing full glass spheres and conducting pigment // 2642665
FIELD: chemistry.SUBSTANCE: composition comprises a) a binder system selected from epoxy resin binder systems, polysiloxane-based binder systems, polyurethane-based binder systems, cyclized rubber binder systems, and phenoxy resin binder systems, b) zinc particles, c) uncovered hollows glass microspheres, and d) a conductive pigment selected from the group consisting of graphite, carbon black, aluminium-based pigments, black iron oxide pigment, antimony doped tin oxide, mica coated with doped antimony tin oxide, indium tin oxide, carbon nanotubes, fibres based on carbon black, graphite, and any mixture thereof. The said composition further comprises a solvent.EFFECT: improving the corrosion resistance of metal structures.17 cl, 9 tbl, 6 ex
Curing of aromatic carbodiimides // 2642462
FIELD: chemistry.SUBSTANCE: method of polymerizing aromatic multifunctional carbodiimide is that aromatic multifunctional carbodiimide containing polymerized residues of aromatic multifunctional isocyanate and aliphatic polyol, a carbodiimide group, a urethane group containing aliphatic substituents are subjected to the interaction with the potassium acetate. The reaction is carried out at a temperature in the range of 15 to 90°C. The aromatic multifunctional carbodiimide is a carbodiimide prepolymer which contains carbodiimide in an amount of 2 to 5 wt %, and contains 2 aromatic substituents attached to each carbodiimide group. The curing composition of resin includes a carbodiimide prepolymer and potassium acetate.EFFECT: invention allows to cure aromatic carbodiimides at low temperatures to produce coatings.8 cl, 12 ex
Complex polyesters and their coatings // 2642063
FIELD: chemistry.SUBSTANCE: complex polyester obtained from a mixture of reagents is described, including: a) aromatic monoacid where aromatic monoacid is from 25 to 60 wt % when calculating the total mass of the reagents; b) poliacid where poliacid has less than 90 mol % of isophthalic acid; and c) polyol containing at least 3 hydroxyl groups. The mixture of reagents contains less than 1000 parts based on parts per million (ppm) of nonaromatic monoacid, and the above-mentioned polyester is characterized by a dynamic viscosity greater than 15,000 centipoises at 40°C under measurement when using the viscometer Physica MCR 301 rheometer with a parallel plate of 25 mm and a gap of 0.1 mm, depending on the increasing shear rate (from 0.1 to 10 s-1), and an acid number smaller than 15 mg KOH/g. A composition of the coating is also described, containing: a) polyester obtained from a mixture of reagents comprising: 1) aromatic monoacid where aromatic monoacid is from 25 to 60 wt % when calculating the total mass of the reagents; 2) poliacid where poliacid has less than 90 mol % of isophthalic acid; and 3) polyol containing at least 3 hydroxyl groups, where the mixture of reagents contains less than 1000 ppm of nonaromatic monoacid, and the above-mentioned polyester is characterized by a dynamic viscosity greater than 15,000 centipoises at 40°C under measurement when using the viscometer Physica MCR 301 rheometer with a parallel plate of 25 mm and a gap of 0.1 mm, depending on the increasing shear rate (from 0.1 to 10 s-1), and an acid number smaller than 15 mg KOH/g; and b) a stapler. A substrate is described, at least a part of the surface of which is coated with the above composition.EFFECT: production of coatings characterized by good chemical resistance, scratch resistance and weather resistance, high solid content and low volatile organic compounds.19 cl, 9 tbl, 7 ex
Fluorinated polyamide composition with reduced combustibility // 2641931
FIELD: chemistry.SUBSTANCE: invention relates to low combustibility composite materials including a polyamide base and flame retardant, and can be used to produce moulded articles such as yarns, films and sheets, as well as cast-in-place moulds. The fluorine-containing polyamide composition with reduced flammability includes polyamide PA-6 and flame retardant. The flame retardant is montmorillonite represented by a mixture of two main fractions: 50-100 nm -10 wt %, less than 1 mcm - 80 wt %, less than 10 mcm - 10 wt % with a mixture of polyfluorinated alcohols adsorbed in an ultrasound field thereon. A mixture of polyfluorinated alcohols consists of 1,1,3-trihydroperfluoropropanol-1, 1,1,5-trihydroperfluoropentanol-1 and 1,1,7-trihydroperfluoroheptanol-1.EFFECT: increased duration of thermal protection effectiveness of the polyamide composition.2 ex
Sulfur-coated rubber mixture and automobile tires // 2641751
FIELD: chemistry.SUBSTANCE: rubber mixture contains, at least, the following constituents: 40 to 100 parts of, at least, one natural and/or synthetic polyisoprene per 100 parts of rubber, 15 parts or more of, at least, one hydrocarbon resin per 100 parts of rubber formed from 50 to 100 wt % of the aliphatic monomers C5 and from 0 to 50 wt % of, at least, one additional monomer, wherein the hydrocarbon resin has a value of Q from 0.015 to 0.050[°C⋅mol/g], where Q=softening point [°C]/determined by centrifugation with an average Mc [g/mol], and wherein the hydrocarbon resin has a softening point in accordance with ASTM E 28 (ring and ball method) from 60 to 200°C, and 10-300 parts of, at least, one silicic acid per 100 parts of rubber.EFFECT: rubber mixture has a high level of performance in terms of rolling resistance and wet grip performance.9 cl, 1 tbl
Anti-corrosion coatings // 2641750
FIELD: chemistry.SUBSTANCE: described curable compositions comprise a polybenzoxazine component, a polyamine component, and a fluoropolymer component. The fluoropolymer component used is selected from fluoroolefin (co) polymers, perfluoroolefin (co) polymers, (co) polymers of perfluoroalkylvinylethers and (co) perfor alkoxyvinyl ether polymers.EFFECT: invention provides protection against corrosion of substrates under the influence of high temperatures.14 cl, 3 tbl, 3 ex
Silicate acid-containing rubber mixtures containing ether of ώ-mercaptocarbonic acid with polyhydric alcohols // 2641128
FIELD: chemistry.SUBSTANCE: rubber mixture contains, in each case, at least, one rubber, one sulfur-containing alkoxysilane, one silicic acid-based filler, and one ether ω-mercapto-C2-C6-carboxylic acid with polyhydric alcohols. In addition, the rubber mixture contains, at least, one crosslinking agent, additional fillers, antioxidants, heat stabilizers, light stabilizers, antioxidants, flame retardants, plasticizers, and other auxiliaries. Rubber mixtures are produced by multi-stage mixing. The rubber mixture is preferably cured at a temperature of 100 to 200 °C. Vulcanizates are especially tires and tire parts.EFFECT: increasing the composition efficiency.15 cl, 2 tbl
Texstolite of multifunctional purpose // 2641125
FIELD: textile, paper.SUBSTANCE: texstolite is made of heat-treated woven semi-finished product containing reinforcing heat-resistant filler in the form of polyoxadiazole yarn or threads and thermoplastic binder in the form of continuous polyamide complex threads. The filler and binder are stranded twist 150-250 tw./m in combined thread linear of density of 58.0-100.0 tex when their ratio is (0.85-1.18) (0.84-1.16) and the ratio of densities of the woven semi-finished product on the basis of equal and duck 1:(0.5-0.8).EFFECT: reduction in porosity and giving noise, vibration, sound and antifriction properties.3 cl, 2 tbl, 2 ex
ethod for obtaining polyurethane foam with emulsified foaming agent // 2641119
FIELD: chemistry.SUBSTANCE: method for obtaining polyurethane foam comprises the steps of: supplying an isocyanate-reactive component A comprising a polyol component A1 which further comprises a physical foaming agent T; mixing at least the isocyanate-reactive component A and the isocyanate component B, thereby obtaining a polyurethane reactive mixture; feeding the polyurethane reactive mixture into the cavity (11) and lowering the pressure inside the cavity (11) to a pressure lower than the ambient pressure. The physical foaming agent T is present in the isocyanate-reactive component A in the form of an emulsion. The polyol component A1 constitutes a continuous phase, and the drops of the physical foaming agent T are a dispersed phase emulsion. In the latter, the average drop size of the physical foaming agent T is from ≥0.1 mcm up to ≤20 mcm. The drop size is determined by means of an optical microscope operating in a light-field translucent mode.EFFECT: stability of foam resistance to its phase separation during storage or under shear.19 cl, 5 dwg, 3 tbl

Composite materials from thermo-reactive resin containing inter-layer particles increasing strength // 2641004
FIELD: chemistry.SUBSTANCE: resin system comprises the following components: (i) a thermosetting resin comprising, at least, one tri-functional epoxy resin and, at least, one four-functional epoxy resin, (ii) thermoplastic polyamide particles having a melting temperature TPA; and (iii) one or more curing agents. The resin system does not contain epoxy resin with a functionality of less than three. The starting components of the resin system are selected so that the thickening of the epoxy matrix during the curing cycle of the resin system occurs at a thickening temperature TGEL at or below TPA. The resin system is cured at a temperature TC in the range of 170 to 190°C, and all thermoplastic particles have a melting temperature TPA not higher than curing temperature TC. The method of producing a composite material is to provide a resin system and combine it with reinforcing fibres. The system is then cured at a temperature in the range of 170 to 190°C at a rate of change of hardening RCR in the range of 0.05 to 3.0°C/min.EFFECT: invention makes it possible to produce a composite material containing thermoplastic particles that increase impact resistance, and having improved compression characteristics under conditions of elevated temperature and humidity, and to reduce or eliminate the formation of microcracks during curing.14 cl, 8 dwg, 7 tbl, 4 ex
Rubber mixture on basis of propylenoxide rubber for frozen-oil resistant products // 2640784
FIELD: chemistry.SUBSTANCE: rubber mixture includes, pts wt: propylenoxide rubber SKPO - 75-95, epichlorhydrine rubber SKEHG-ST - 5-25, stearic acid 0.5-3.0, zinc oxide - 2.0-10.0, captax - 0.3-1.0, thiuram - and 0.5-2.0, sulfur - 0.5-2.0, filler-technical carbon - 0-100.EFFECT: rubber mixture according to the invention makes it possible to obtain rubber with high frost resistance and strength while maintaining oil resistance.1 tbl, 1 ex

Refractory polymer composition // 2640769
FIELD: chemistry.SUBSTANCE: invention relates to the refractory polymer composition suitable for use when applying the coating on the treated articles containing thermoplastic polymer containing vinyl acetate, and an unsaturated elastomer containing double bonds as polymeric components, where the polymer components are present in the form of a homogeneous polymer blend, and where a composite matrix is formed, vulcanized only with the use of sulfur or a crosslinking system containing sulfur, where the sulfur crosslinking system is distributed throughout the matrix and fully penetrates into the matrix, and at least one flame retardant or a combination of flame retardants. The invention further relates to articles obtained from such a composition and to composite elements coated with the composition as well as to the method for their preparation.EFFECT: producing compositions for protecting a dynamically tense component with a coating of this composition, so that the aggregate component is sufficiently refractory, in particular, complies with the standard for fire safety CEN TS 45545-2 without rendering noticeable adverse effects by the specified coating on the dynamic properties of the composite element during its service life.38 cl, 16 dwg, 5 tbl, 5 ex
Treated fillers, compositions containing them, and products made from them // 2640075
FIELD: technological processes.SUBSTANCE: process comprises of (a) treating a suspension, which includes an untreated filler, that is not pre-dried, using a treating agent, thereby making a suspension of the treated filler, and (b) drying the treated filler suspension to produce a treated filler. The treating agent contains a polymer that has (i) the first group, which interacts with a raw filler, and (ii) the second group, which interacts with the rubber matrix, which incorporates the treated filler.EFFECT: invention improves compatibility of the filler with the polymer matrix, improves the technological viscosity and prevents the phase separation of fillers with high specific surface area and of the polymer matrix that improves dynamic and mechanical properties of rubber tires of light vehicles and truck tires.25 cl, 25 tbl
Compositions containing non-hevea purified rubber and relevant purifying methods // 2637956
FIELD: chemistry.SUBSTANCE: these methods can be used with a plant material containing, at least, 90 wt % of roots derived from Taraxacum kok-saghyz (kok-saghiza), Scorzonera tau-saghyz (tau-saghiza), Scorzonera uzbekistanica and combinations thereof. A product based on non-hevea purified rubber with a predetermined purity is also provided, comprising a rubber obtained from Taraxacum kok-saghyz, Scorzonera tau-saghyz, Scorzonera uzbekistanica and combinations thereof. In addition, sulfur vulcanization of rubber compounds and vulcanized grey rubber mixtures are described, containing from 10 to 100 weight parts by 100 weight parts of rubber of the said product on the basis of the non-hevea purified rubber with a predetermined purity.EFFECT: producing a purified product and rubber mixtures based thereon, which have high physicomechanical characteristics.6 cl, 4 tbl, 2 ex
Fluorine-containing polyamide composition with reduced combustibility // 2637955
FIELD: chemistry.SUBSTANCE: composition includes PA-6 polyamide and a mixture of flame retardants consisting of antimony tris (1,1,7-trihydroperfluoroheptoxide) and mixtures of 1,1,3-trihydroperfluoropropanol-1, 1,1,5-trihydroperfluoropentanol-1 and 1,1,7-trihydroperfluoroheptanol-1, pre-adsorbed on montmorillonite, at a certain ratio of components.EFFECT: increasing the duration of thermal protection effectiveness of composites.3 ex

icrogel-containing protector mixture for winter tires // 2637906
FIELD: chemistry.SUBSTANCE: vulcanizable rubber mixture comprises, at least, the following components: 100 pts wt of the oil-free rubber matrix that contains a) 15 to 79 pts wt of L-SBR solution styrene butadiene rubber, which does not contain oil with a glass transition temperature Tg(L-SBR) in the range of -70 to -10°C, b) 20 to 75 pts wt of 1,4-cis-polybutadiene BR, which does not contain oil with a glass transition temperature Tg(BR) in the range of -95 to -115°C, c) 1 to 37.5 pts wt of natural rubber NR, oil-free and/or synthetic polyisoprene IR with a glass transition temperature Tg(NR) in the range of -50 to -75°C; hydroxyl group-containing microgel based on polybutadiene; hydroxyl group-containing oxide filler; polysulphide-containing alkoxysilane; a curing agent.EFFECT: invention makes it possible to increase the resistance to reversion during vulcanization of the rubber mixture, to produce a rubber mixture with optimum adhesion to ice-covered and snow-covered road, as well as low rolling resistance and high abrasion resistance.27 cl, 1 dwg, 55 tbl
Polyamide compounds with improved optical properties // 2637556
FIELD: chemistry.SUBSTANCE: polymer composition comprises, at least, one polyamide and, at least, one compound of the formula , in which x is 1, 2 or 3; R1 and R2are independently selected from hydrogen, linear C1-C7-alkyl, branched C3-C10-alkyl, unsubstituted or substituted C3-C12-cycloalkyl, unsubstituted or substituted C3-C12cycloalkyl-C1-C4-alkyl, unsubstituted or substituted aryl and unsubstituted or substituted aryl-C1-C4-alkyl; and Z is trans 1,4-cyclohexanediyl. The use of a compound of formula I in a polymer composition for improving, at least, one optical property selected from increased transparency, increased laser transparency and reduced turbidity, and a moulded article produced from the said composition are also described.EFFECT: providing improved optical properties selected from reduced turbidity, improved transparency and improved laser transparency in polyamide compositions using the compound of formula I.23 cl, 23 tbl, 17 ex

etal-polymer nanocomposite magnetic material based on poly-3-amino-7-methylamino-2-methylphenazine and nanoparticles fe3o4 and method of its production // 2637333
FIELD: chemistry.SUBSTANCE: metal-polymer nanocomposite magnetic material includes a polymer matrix and nanoparticles Fe3O4 dispersed therein. As a polymer matrix, a matrix of poly-3-amino-7-methylamino-2-methylphenazine PAMMP is used with the content of the nanoparticles Fe3O4 in the material 1-70 wt % of PAMMP. To produce a metal-polymeric nanocomposite magnetic material by oxidative polymerization of a monomer in situ on the surface of the nanoparticles Fe3O4 in the presence of an aqueous oxidant solution, 3-amino-7-dimethylamino-2-methylphenazine hydrochloride-neutral red is used as a monomer, and ammonium persulfate is used as an oxidant. The molar ratio of the oxidant to the monomer in carrying out the oxidative polymerization is 2-5. Prior to oxidative polymerization, the monomer is dissolved in an organic solvent, which is acetonitrile, dimethylformamide or dimethylsulfoxide, to a concentration of 0.01-0.05 mol/l. Nanoparticles Fe3O4 are added to the solution in the amount of 1-70 wt % of PAMMP. Oxidative polymerization is carried out at 0-60°C for 1-6 hours.EFFECT: invention allows to increase the saturation magnetization of a hybrid metal-polymer nanocomposite magnetic material with super-magnetic properties, high thermal stability, to simplify its production, and to reduce energy costs.2 cl, 10 dwg, 1 tbl, 24 ex

Hybrid component based on metal and plastic // 2636720
FIELD: chemistry.SUBSTANCE: inherent property of the polymer composition is that it contains from 50 to 99.7 wt % of, at least, one polymer selected from polyamides, mixtures thereof, and polyaryl ether ketones, and from 0.3 to 20 wt % of one or more silicone-containing additives enhancing the adhesion. The invention further relates to the hybrid components based on plastic and metal and their preparation.EFFECT: products obtained from the compositions have improved physico-mechanical characteristics.15 cl, 3 dwg, 6 tbl
ulti-layer film with improved properties of elastic module // 2636711
FIELD: packaging industry.SUBSTANCE: product is obtained by three-dimensional forming a multi-layer plastic film which has a middle layer A, comprising at least one polycarbonate or copolycarbonate and/or polyester or copolyester. The mentioned middle layer A is located between two outer layers B containing at least one thermoplastic polyurethane having 45-85HSD.EFFECT: decreasing the characteristics of the elastic module under tension during the period of use of the product.17 cl, 2 tbl, 12 ex
ethod for producing nanocomposite materials based on polymeric matrix and nanoscale fillers - nanoparticles // 2636084
FIELD: chemistry.SUBSTANCE: method for producing nanocomposite materials is described, characterized in that mixtures of different nanoparticles are used as a nanoscale filler of, at least, two types: nanoparticles of the layered geometry, nanofibres, nanotubes, and nanocones/discs introduced into the polymer simultaneously or sequentially. The nanoparticles are introduced into the polymer simultaneously or sequentially by stirring with a mechanical stirrer for 24 hours at the speed of 1000 rpm. At the same time, at least, one of several types of the used nanoparticles can be introduced into the polymer matrix at the stage of its synthesis (in situ polymerization). From the produced nanocomposite solution, films are cast by means of a slot die, dried for 2 hours at the temperatures of 80°C or 70°C followed by the heat treatment in heating mode up to 360°C with the speed of 5 deg/min or up to 250°C at the speed of 3 deg/min and holding at this temperature for 15 or 30 minutes, respectively.EFFECT: providing a polymer material with a high total nanoparticle concentration, at which the concentration of nanoparticles of each type remains sufficiently low to remain uniformly distributed in the volume of the polymer and not to form aggregates, which provides an increased level of mechanical characteristics such as a module of elasticity, strength, and a plasticity limit.2 cl, 1 dwg, 1 tbl, 7 ex
Rubber mixture // 2635803
FIELD: chemistry.SUBSTANCE: mixture consists of a solution butadiene-styrene statistical rubber oil-filled with brand TDAE, normalized in content of polycyclic aromatic hydrocarbons, a smaller proportion of cis-butadiene rubber on a neodymium catalyst and a partial fraction of natural rubber of the STR brand, and includes a silicic filler with a specific surface of 165 m2/g, sulfur, a vulcanizing group, stabiliser-microcrystalline wax, antioxidants, a technological additive, a binding agent, hydrocarbon maleized resin and plasticiser oil.EFFECT: invention allows to provide better grip on a wet road with lower rolling losses and to obtain fuel-efficient tires.1 dwg, 3 tbl

ethod of obtaining dynamically volcanized alloys // 2635610
FIELD: technological processes.SUBSTANCE: alloy includes at least one elastomer and at least one thermoplastic resin. According to the method, the thermoplastic resin is added to the extruder in two stages with the intermediate addition of a compatibilizing agent. In addition, vulcanizers of elastomers are added to the extruder during the final addition of the thermoplastic resin.EFFECT: invention allows to obtain dynamically vulcanized alloys with unique morphological properties, which are characterized by good impermeability and low-temperature elasticity.19 cl, 3 dwg, 9 tbl

Rubber composition for tyres and studless winter tyre // 2635608
FIELD: chemistry.SUBSTANCE: rubber composition for a tyre contains 100 wt parts of diene rubber (A); 30 to 100 wt parts of carbon black and/or a light filler (B) and 0.3 to 30 wt parts of cured product (C). At that, the cured product (C) is obtained by curing a cross-linkable oligomer or polymer (c1) immiscible with the diene rubber (A). The JIS A hardness of the cured product (C) is from 3 to 45. The cross-linkable oligomer or polymer (c1) is a polymer or copolymer based on polyether.EFFECT: creation of a rubber composition for a tyre, allowing to obtain a tyre having excellent performance characteristics on ice and excellent wear resistance.12 cl, 4 dwg, 4 tbl, 21 ex
Water dispersions of polyurethane // 2633577
FIELD: chemistry.SUBSTANCE: invention relates to an aqueous dispersion of polyurethane comprising (a) dispersed particles of the said polyurethane, wherein the said polyurethane is a reaction product of polyurethane forming reactants comprising (i) one or more polyisocyanates, (ii) a polyol component comprising one or more polyols, and (iii) one or more organometallic compounds having the structure , where n is 0 or 1, t is 0 or 1, r is 0 or 1, p is 0 to 2, q is 0 to 13, at least one of p and q e is zero, M is a metal which is not silicon, -X1 is -NH2 or -OH; and -X2 is selected from the group consisting of -SH, -NH2, -COOH and ; and (b) one or more isocyanate cross-linking reagents containing two or more isocyanate groups.EFFECT: resulting dispersion has improved adhesion properties.5 cl, 2 tbl
Liquid prepolymer hardener which has terminal isocyanate groups // 2633520
FIELD: chemistry.SUBSTANCE: liquid hardener comprises prepolymers of 3.3'-dichloro-4.4'-didiaminodifenilmetan nonvolatile solvent and - a mixture of N,N'-tetraoksipropilendiamina with 1.4-butanediol in the ratio, by pts.wt.: 3.3'-dichloro-4.4'-didiaminodifenilmetane 5.9-10.0; N,N'-tetraoksipropilendiamin 5.4-0.8; 1.4-butanediol 1.4-4.3.EFFECT: obtaining elastomers with a hardness of 55-70 units Shore A, with a high level of strength properties.2 tbl, 8 ex
Fire-resistant polyamides with light colour // 2632010
FIELD: chemistry.SUBSTANCE: invention relates to the thermoplastic moulding compositions, its use in the manufacture of fibers, films, moulded products, such as fibers, films, moulding products, as well as to the use of salt or copper (I) or silver (I) oxide, or its mixtures to produce moulding compositions or the indicated moulded products, imparting the certain properties to them, for example, the increased resistance to ultraviolet light, reduced by the phosphine formation, having less intense reddish colour tone, etc. The thermoplastic moulding compositions contains A) from 10 to 99.8 wt % of the thermoplastic polyamide, B) from 0.1 to 60 wt % of red phosphorus, C) from 0.01 to 4 wt % of the salt, the oxide or complex of the copper (I) or silver (I) or mixtures of these substances, D) from 0 to 40 wt % of the impact strength modifier, E) from 0 to 60 wt % of other additives. The weight percentages sum of the components A)-E) is 100%.EFFECT: invention makes it possible to produce moulding compositions, based on thermoplastic polyamide with red phosphorus, as the flame retardant, characterized by the slight reddish own colour, improved colourability in light and gray tones, the increased resistance to the ultraviolet light and low propensity to form the phosphine.15 cl, 3 tbl
Polyamide composition to manufacture moulded products with improved surface quality and method of its production (its versions) // 2632008
FIELD: chemistry.SUBSTANCE: polyamide composition contains the following components (wt %): a) 40-99.55 polyamide, b) from 0.15 to 10 electrically conductive carbon, selected from the group of carbon nanotubes and graphene, c) from 0.3 to 8 the oligofunctional compound, that contains at least one functional group, that is capable to react with the reactive groups on the carbon surface, and also optionally at least one functional group, that can react with the terminal group of the polyamide, d) up to 59.55 of final additives. The functional groups are selected from the oxazinone and oxazoline groups.EFFECT: improved dispersion of carbon nanotubes, graphene and, accordingly, improved electrical conductivity.7 cl, 5 tbl, 5 ex
oulded polyamides, method of their production and their application // 2631324
FIELD: chemistry.SUBSTANCE: method for producing a moulded polyamide consists in that, at least, one lactam melt with an anionic polymerization catalyst and optionally a tertiary amine co-activator and/or dibutyltin dilaurate is mixed with, at least, one lactam melt with a biuret polymerization activator or uretdione, and, if necessary, the aforementioned co-activator. The polymerization is then carried out in a mould at a temperature of, at least, 80°C to 130°C, preferably of 110°C to 130°C. Herewith the co-activator must be contained in, at least, one of the lactam melts. If necessary, a lactam melt with a co-activator can be introduced before polymerization. The moulded polyamide is used to make rollers, preferably for passenger elevators, and preforms, preferably containers, gears, tubes, rods and plates for engineering and the automotive industry.EFFECT: invention makes it possible to produce polyamides with a short holding time produced at low temperatures, as well as to produce moulded parts with improved characteristics.7 cl, 1 tbl, 1 ex
ethod of obtaining the compositions of melt adhesives based on chelates metals and oligocyanurate resins with active cyanat groups for the impregnation of the reinforcement material in polymeric composite materials and composition, obtained by the proposed method // 2630929
FIELD: chemistry.SUBSTANCE: method of obtaining compositions of melt adhesives based on chelates metals and oligocyanurate resins with active cyanat groups for the impregnation of the reinforcement material in polymer composite outer purpose where: heating the resin to a melt state; a catalyst is injected into the resulting melt as a dry powder of metal chelates having a particle size of 40-125 mcm in an amount of 50-600 ppm by weight of the metal ions to the weight of the composition; and the melt is stirred until visually uniform. A composition for impregnating reinforcing material in polymer composite materials is also described.EFFECT: polycyanurate binder with a minimum curing temperature has been developed, which makes it possible to eliminate the use of solvents and reduce the gassing of composite materials.2 cl, 1 tbl
ethod for decreasing content of fluorinated emulsifiers in aqueous dispersions of fluoropolymers by sugar-based emulsifiers // 2629069
FIELD: chemistry.SUBSTANCE: aqueous dispersion of fluoropolymers contains a fluoropolymer, at least, one sugar-based emulsifier, an additive selected from the group consisting of a functionalizing ester and an anionic surfactant (sulfates, sulfonates, phosphonates) and 0 to 1000 ppm of fluorinated polyester emulsifier. The process for increasing the dispersion concentration of fluoropolymers involves the preparation of an aqueous dispersion of fluoropolymers comprising a fluoropolymer and a fluorinated polyester emulsifier having the general formula [Rf-O-L-A]M. The dispersion is heat treated in the presence of a sugar-based emulsifier. Heating causes phase stratification to an aqueous dispersion enriched in fluoropolymer and an aqueous phase depleted of fluoropolymer.EFFECT: improving the properties of fluorinated dispersions containing a small amount of more biodegradable fluorinated polyester emulsifiers.13 cl, 12 ex

Sugar-based polyurethanes, methods of their obtaining and application // 2629020
FIELD: oil and gas industry.SUBSTANCE: fire-resistant polyurethane foam contains two reaction mixtures. The first reaction mixture comprises a polyisocyanate and optionally a surfactant, and the second mixture comprises a natural polyol in which substantially all of the hydroxyl groups are free, a surfactant, an aqueous foaming agent, a catalyst, a flame retardant, and optional additives. The amounts of the first and second reaction mixtures are such that the obtained isocyanate index is from 20 to 50.EFFECT: the resulting polyurethane foams show a high degree of resistance to fire and have a high index of biomaterial content, and also have a high "green" index according to ASTM standards.31 cl, 9 dwg, 8 ex
olded articles made of polyamide resin // 2628072
FIELD: chemistry.SUBSTANCE: polyamide resin includes diamine structural link and structural link of dicarboxylic acid. Diamine structural links are formed by m-xylylenediamine, p-xylylenediamine or their mixture. Structural units of dicarboxylic acid are formed by sebacic acid. The molded article has a crystallinity index of 0 to 50%, and a moisture content in the range of 0.1 to 2 wt %. The method of producing the molded article is that the above polyamide resin is molded.EFFECT: invention allows to increase the modulus of elasticity of molded articles, while the molded articles do not lose their mechanical strength during prolonged use.8 cl, 3 tbl, 20 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

Compounds for adhesion treatment or prevention, pharmaceutical compositions based thereon and method for adhesion process prevention and treatment // 2624228
FIELD: pharmacology.SUBSTANCE: invention discloses pharmaceutical compositions containing an effective amount of SB203580 substance or one of the compounds of type (I) to (VII) or combinations thereof, and a pharmaceutically acceptable carrier, diluent or excipient. Also, application of structures of type (I) - (VII) as a means having anti-adhesion activity is disclosed. In addition, a method for prevention and/or treatment of a disease or condition with a possibility of adhesions formation and/or growth, that allows dispensing without additional administration of drug in the postoperative period is disclosed.EFFECT: possibility of use for treatment or prevention of adhesion.14 cl, 16 ex, 10 dwg
Cold curing epoxide composition // 2623774
FIELD: chemistry.SUBSTANCE: epoxy-dian resin composition comprises a plasticizing agent selected from the group consisting of aliphatic diglycidyl ether diethylene glycol, diglycidyl ether of 1.4-butanediol and dibutyl phthalate, a curing system that includes triethylenetetramine and a mixture of aromatic amines XT-450/2 or polyamide resin.EFFECT: high technological viability of the composition, high physical and mechanical characteristics.2 cl, 3 tbl, 10 ex
Composition based on polyester resin, process for its preparation and moulding product using such compositions // 2623261
FIELD: chemistry.SUBSTANCE: mentioned composition based on the polyester comprises a resin component comprising from 80 to 98 wt % of polyester resin (A) consisting of units of an aromatic dicarboxylic acid and units of a diol, and from 20 to 2 wt % of the polyamide resin (B) consisting of links of diamine and dicarboxylic acid, the diamine units comprise 70 mol % or more of m-xylylenediamine units and a dicarboxylic acid units comprise 70 mol % or more units of α, ω-aliphatic dicarboxylic acid and from 0.005 to 0.05 by weight certain parts epoxy resin (C) containing styrene units represented by formula (c1), and glycidyl (meth) acrylate units represented by formula (c2) based on 100 parts by weight resin component. Shaped articles derived from mentioned composition, used in particular as packaging materials such as films, sheets, hollow containers.EFFECT: obtain products with excellent gas tightness and high transparency.10 cl, 3 tbl, 4 ex

Polyamide threads for clothing textiles and fabrics and items of clothes made of them // 2623219
FIELD: textile, paper.SUBSTANCE: thread is made from polyamide containing nylon and polyether diamine which has an average molecular weight of at least 1500 and an equivalent weight per one atomic hydrogen atom (AHEW), less than 10 percent greater than the idealized AHEW value for simple polyether diamine, wherein the amount of active amine hydrogen atoms per molecule and, thus, the AHEW value is calculated by determining the nitrogen content of the amine groups using the procedure described in the document ISO 9702. Clothing fabrics contains the abovementioned thread. The garment comprises a clothing fabric and represents a integral knitted garment or hosiery. The method of thread manufacturing lies in the fact that the melt of the abovementioned polyamide is extruded through a drain bushing containing capillary holes, and filaments are formed from the filaments coming out of the drain bushing.EFFECT: invention provides a polyamide and thread which have a high residual moisture.44 cl, 8 dwg, 4 tbl
Polyurethane foams premixes containing blowing agent based on halogenated olefin, and derived foams // 2621781
FIELD: chemistry.SUBSTANCE: composition for foam production contains hydrohaloolefin-based blowing representing 1-chloro-3,3,3-trifluoropropene (1233zd), one or more polyols, one or more surfactants and a catalyst system. The catalyst system comprises at least one precipitation-resistant metal-based catalyst and at least one amine catalyst. The precipitation-resistant metal catalyst comprises at least the first precipitation-resistant catalyst based on the first metal and at least the second precipitation-resistant catalyst based on the second metal, where the precipitation-resistant metal-based catalysts include: a) a metal selected from the group consisting of zinc, lithium, sodium, magnesium, barium, potassium, calcium, bismuth, cadmium, aluminium, zirconium, tin or hafnium, titanium, lanthanum, vanadium, niobium, tantalum, tellurium, molybdenum, tungsten, or cesium and b) in combination and/or composition with an aliphatic carboxylate. Polyurethane and polyisocyanurate closed-cell foams are disclosed as well.EFFECT: fine uniform cell structure and little or no foam falling off.12 cl, 20 tbl, 15 ex, 4 tbl
Hydrophobically modified polyamine scale inhibitors // 2621705
FIELD: chemistry.SUBSTANCE: method for reducing or removing scale in an industrial process is disclosed, comprising adding of the composition to the process, comprising polymeric reaction product of polyamine and two compounds chemically active in relation to nitrogen, one of which contains a group -Si(OR")3, where R" is hydrogen, C1-C20 alkyl or phenyl, wherein the polymeric reaction product has a weight-average molecular weight of at least 500.EFFECT: usage of hydrophobically modified polyamines in the disclosed method increases the efficiency of aluminosilicate scale removal indifficult-to-treat industrial process streams.19 cl, 14 tbl, 156 ex
eans for improving appearance of rubber compositions with antidegradants // 2620397
FIELD: chemistry.SUBSTANCE: rubber composition for a tyre sidewall contains a natural or synthetic rubber polymer, an antidegradant causing plaque formation, and a polyester resin which comprises a copolymer of maleic anhydride or acid and a linear or branched polyol in an amount of approx. 0.1 wt parts to approx. 10 wt parts per 100 wt parts of rubber.EFFECT: invention can improve gloss and the quality of the rubber composition of under tyre operating conditions while maintaining high ozone resistance.11 cl, 4 tbl
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
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
Abrasi-resistant polyurethane coating for polycarbonate products // 2619316
FIELD: chemistry.SUBSTANCE: invention relates to polyurethane coatings for polycarbonate products, and can find wide application in various industries where polycarbonate products are used, for example optical products, protective masks, shields, etc. The coating is prepared by mixing a polyol of 2,2-bis-[4-(2-hydroxytriethoxy)-phenyl]-propane, a polyisocyanate based on 4,4'-diphenylmethane diisocyanate and ethyl acetate. The mixture is aged for 4-6 hours, then applied to the surface of the polycarbonate product and the coating is cured for at least 5 days.EFFECT: obtaining an abrasion-resistant polyurethane coating for polycarbonate products, which has high abrasion properties.5 tbl, 5 ex
ethod for producing glass-filled polyamide composition and glass-filled polyamide composition // 2618255
FIELD: chemistry.SUBSTANCE: method of obtaining glass-filled polyamide composition by extrusive combination of polyamide, stabiliser, chopped glass fiber and process lubricant at a temperature higher than polyamide melting point is described, followed by cooling and granulating the obtained composition, in which chopped glass fiber is introduced into polyamide melt in a zone, providing the length of extrusive combination of composition components from 2 to 16 diameters of extruder screw with the following component ratio wt. %: fiberglass 20.0-55.0; process lubricant 0.05-1.00; stabiliser 0.02-1.00; aliphatic polyamide - the rest is up to 100%. A glass-filled polyamide composition is also described.EFFECT: glass-filled polyamide composition with increased fatigue endurance and strength level was obtained.4 cl, 2 tbl, 10 ex
Carbohydrate based bonding system and method for its preparation // 2615431
FIELD: chemistry.SUBSTANCE: invention relates to an aqueous binder composition based on carbohydrates, containing a carbohydrate component (a) and an amine component (b), where the carbohydrate component (a) comprises one or more pentoses in a total amount of 3 to 70 wt % based on the total weight of the carbohydrate component (a), and to a method for its preparation.EFFECT: preparation of the binder composition, based on renewable sources, and improved cure rate.37 cl, 3 dwg, 2 tbl
Thermoplastic polyurethane and composition thereof // 2615137
FIELD: chemistry.SUBSTANCE: present invention relates to thermoplastic polyurethane composition for making moulded articles. Composition contains thermoplastic polyurethane and 1–20 pts.wt of a cross-linking agent, in form of an organic peroxide, a silane compound or a cross-linking agent. Thermoplastic polyurethane is obtained by reacting organic diisocyanate, polymer polyol and chain extender. Polymer polyol has number-average molecular weight 1,000–5,000. Chain extender comprises a linear diol and a diol, containing an alkyl group in side chain, at a ratio of 97/3–60/40. Content of nitrogen atoms in thermoplastic polyurethane varies from 1.5 to 4.0 wt%.EFFECT: thermoplastic polyurethane, used in said composition has excellent transparency, cold resistance, wear resistance and mechanical properties, and exhibits low rate of thickening even when melt is used for a long period of time.17 cl, 6 tbl, 26 ex
ethod for producing rubber mixture, rubber mixture and pneumatic tyre using it // 2614680
FIELD: chemistry.SUBSTANCE: invention relates to a process for obtaining a rubber mixture. The mixture consists of a rubber component (A), a filler comprising an inorganic filler, (B), a silane coupling agent (C) and at least one vulcanisation accelerator (D). Component (A) comprises at least one member of natural rubbers and synthetic diene rubbers. Vulcanisation accelerator (D) is selected from guanidines, sulfenamides, thiazoles, thiurams, dithiocarbamates, thioureas and xanthates. In the process the rubber mixture is kneaded in several stages. During the first kneading step (X) a part (A') of the rubber component (A), all or part of inorganic filler (B), all or a part of silane coupling agent (C) and all or part of a vulcanization accelerator (D) are added and kneaded. During or after the second kneading stage a residual part (Aʺ) of rubber component (A) is added and kneaded.EFFECT: invention provides a reduction in heat generation as a result of a further improvement in activity of glazing function of silane coupling agent.41 cl, 2 tbl, 22 ex