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

C   Chemistry; metallurgy(311501)
C08            Organic macromolecular compounds; their preparation or chemical working-up; compositions based thereon(30547)
Improved solvent for extraction of maleic anhydride from gas stream // 2607762
FIELD: chemistry.SUBSTANCE: invention relates to methods of producing raw maleic anhydride. In particular, method includes steps where: reactor output stream, containing maleic anhydride, is fed into bottom part of absorption column, where it comes into contact with a non-cyclic solvent, that is fed close to its upper part and is a diester, having a boiling point under normal conditions between 250 °C and 350 °C, solubility of fumaric acid at least 0.06 wt% at temperature of 60 °C, solubility of maleic anhydride at least 10 wt% at temperature of 60 °C, water solubility not higher than 100 mg/l, density, different from water density at least to 0.020 g/ml, and a water-soluble hydrolysis product with molecular weight not higher than that of pentanol, with transfer of maleic anhydride of outlet stream of reactor into a solvent, wherein gas stream to be extracted is blown off from absorption column, and enriched solvent, containing maleic anhydride, is removed from absorption column near bottom of absorber and directed into flash tower near its middle part, untreated maleic anhydride is removed from stripping column near its middle or upper part.EFFECT: methods make it possible to use cheaper solvent than phthalates.11 cl, 1 dwg, 1 tbl
ethod for producing films from non-woven fabrics // 2607747
FIELD: textile and paper.SUBSTANCE: method for producing film from non-woven fabric by conversion of non-woven fabric into film and film and single-dose articles obtained therefrom. Method for producing water-soluble film from a nonwoven fabric contains the following stages: producing nonwoven fabric containing multiple filaments containing filament-forming material soluble in a polar solvent, and an active agent and converting the nonwoven fabric into film. Film is produced as described above. Single-dose article comprising a bag made from film produced in accordance with the proposed method. Method for processing an item from fabric in need of treatment, at one or more stages of which a water-soluble film produced in accordance with the proposed method is used.EFFECT: technical result of the group of inventions consists in improvement of casting speed of films obtained from the solution.46 cl, 3 dwg
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
Compound for realisation of modified bitumen for asphalts // 2607737
FIELD: chemistry.SUBSTANCE: group of inventions relates to polymer chemistry and is used in production of asphalt road surface. Method comprises grinding vulcanised rubber to obtain vulcanised crumb rubber with grain size less than 0.4 mm. Method includes mixing of vulcanised crumb rubber, SBS and lubricant inside an extruder. Weight percentage of lubricant is between 1 % and 50 % with respect to weight of mixture, and vulcanised crumb rubber is in weight percentage 70–100 % with respect to SBS weight. SBS is a polymer of linear, radial types or mixture thereof. Rubber crumb is obtained from processed tyres. Lubricant is a mineral oil. At temperature of 160–200 °C extrusion mixture is carried out to produce a compound, containing rubber crumbs, SBS and lubricating compound.EFFECT: extruded compound is cut into chips and added to bitumen in weight ratio of 5 % and 30 % in relation to total weight of modified bitumen.10 cl, 5 tbl
Polyethylene composition with high degree of swelling // 2607625
FIELD: chemistry.SUBSTANCE: invention relates to a polyethylene composition for making moulded articles of different types. Composition has density from 0.953 to 0.960 g/cm3 and ratio of MIF/MIP from 17–29, where MIF is melt flow index at 190 °C with load of 21.60 kg, and MIP is melt flow index at 190 °C with a load of 5 kg. Composition is obtained by polymerisation of ethylene, optionally together with one or more comonomers, in a gas phase reactor in presence of hydrogen and copolymerisation of ethylene with one or more comonomers in other gas-phase reactor in presence of a lower amount of hydrogen, than at step a). In at least one of said gas-phase reactors growing polymer particles flow upward through a first polymerisation zone under fast fluidisation or transfer conditions, come out of said zone, and enter a second polymerisation zone, through which they flow down by gravity, come out of said second polymerisation zone and reenter first polymerisation zone, creating circulation of polymer between polymerisation zones. All copolymerisation steps are carried out in presence of a Ziegler-Natta polymerisation catalyst deposited on MgCl2. Polyethylene composition contains one or more copolymers of ethylene and not more than 1 wt% of comonomer, selected from olefins of formula CH2=CHR, where R is alkyl radical, linear or branched, containing from 1 to 10 carbon atoms.EFFECT: obtained composition is characterised by good balance of physical and mechanical properties, high degree of swelling of extruded flow with surface of high quality and stability of dimensions of end product, environmental stress-cracking resistance (FNCT) and impact strength.4 cl, 1 dwg, 1 tbl
Prepreg // 2607582
FIELD: materials.SUBSTANCE: invention relates to impregnated materials, such as prepregs and decorative impregnated materials or decorative coating materials. Prepreg, used for producing decorative paper or decorative coating material, is produced by impregnating decorative paper-base with a solution of an impregnating resin. Solution of impregnating resin contains at least one styrene-alkylacrylate-hydroxyethyl methacrylate copolymer, wherein alkyl denotes methyl, ethyl, propyl or butyl, and at least one water-soluble polymer, selected from starch or dextrin from starch.EFFECT: prepreg is characterised by improved resistance to separation, as well as better adhesion and flatness.10 cl, 1 tbl, 9 ex
Rubber mixture, preparation method thereof and cured rubber produced therefrom // 2607581
FIELD: rubber industry.SUBSTANCE: invention relates to rubber mixture, method of its production and cured rubber from it. Rubber mixture contains non-crosslinked rubber and rubber particles, having radiation cross-linked structure, dispersed in it. Particles of rubber, are particles of synthetic rubber and/or natural rubber particles with average particles size from 20 to 500 nm and content of gel of 60 wt%. or more. Non-crosslinked rubber is butadiene-styrene rubber. Weight ratio of rubber particles, having radiation cross-linked structure, and non- cross-linked rubber ranges from 1:99 to 20:80. Rubber mixture is produced by mixing of components, containing non- cross-linked rubber latex and rubber particles latex, having radiation cross-linked structure, and their subsequent coagulation. Rubber particles latex, having radiation cross-linked structure, is rubber latex after radiation cross-linking.EFFECT: invention allows to improve rolling resistance, resistance to slipping on wet road and wear resistance of cured rubber from rubber mixture.10 cl, 9 tbl, 5 ex
ethod of producing high-molecular polymer poly-n-vinylcaprolactam in water // 2607523
FIELD: chemistry.SUBSTANCE: present invention relates to a method of producing high-molecular weight poly-N-vinylcaprolactam. Described is a method of producing high-molecular weight poly-N-vinylcaprolactam by radical polymerisation of vinyl caprolactam in presence of azo-isobutyric acid at reaction temperature 70 °C in water, characterised by that method includes adding to reaction system an activator in form of styrene in concentration 0.6×10-2-1.2×10-2 mol/l.EFFECT: technical result is simplified process of producing high-molecular weight poly-N-vinylcaprolactam.1 cl, 3 dwg, 1 tbl, 1 ex
ethod of producing polymers // 2607521
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing polymers. Described is a method of producing a polymer product. An aqueous mixture containing monoethylenically unsaturated monomer or a mixture of monoethylenically unsaturated monomers is fed into a first reactor device. First reactor device comprises a positive displacement pump. Monomer or mixture of monomers is partially polymerised. Polymerised monomer or mixture of monomers is transferred from inlet to outlet of first reactor to produce partially polymerised product. At moment of outflow from first reactor in partially polymerised product not than 60 % of monomer or mixture of monomers is polymerised. Polymerisation is continued in next reactor device. Polymer product is removed from output of next reactor.EFFECT: technical result is providing a method for more continuous production of polymer with low content of residual unreacted monomer.12 cl, 2 dwg, 4 ex
Partial gold salt of polyacrylic acid, method for production thereof and agent based thereon, having haemostatic action when used externally // 2607519
FIELD: chemistry.SUBSTANCE: invention relates to novel chemical compounds, which can be used in chemistry and medicine as a haemostatic agents. Disclosed is a partial gold salt of polyacrylic acid, characterised by that it corresponds to formula: ,where n = 1,100–3,800; m = 100–800. Also disclosed is a method of producing a compound in paragraph 1, method is characterised by that it comprises adding to solution of polyacrylic acid an aqueous solution of aurichlorohydric acid, reaction mixture is mixed for 60 more minutes, obtained solution is dried in vacuum at temperature not higher than 50 °C. Disclosed is an agent, containing incomplete gold salt of polyacrylic acid, having haemostatic action for external application.EFFECT: technical result is solution has good adhesion to wound surface, effectively stops bleeding, bleeding does not resume when film is removed.3 cl, 7 ex
Heat-resistant polymer composite material based on siloxane rubber and method for production thereof // 2607412
FIELD: chemistry.SUBSTANCE: invention relates to heat-resistant composite materials, which can be used in various industries, in particular in aircraft and space equipment, and to a method for preparing them. Described is a heat-resistant polymer composite material, containing siloxane rubber as a matrix and multi-wall carbon nanotubes (CNT) as filler in amount of 0.1–1.0 wt% per 100 g of pts.wt matrix, wherein material has heat resistance: weight change at 400 °C not more than 3.93 %, and physical-mechanical properties: modulus of elasticity in tension 0.93–3.63 MPa at relative elongation of 330–505 %. Also described is a method of producing polymer composite material.EFFECT: technical result is producing a novel polymer composite material with high heat resistance and improved mechanical properties based on siloxane rubber as a matrix and carbon nanotubes as filler.6 cl, 9 dwg, 1 tbl, 8 ex
Polymer composition for structural purposes // 2607409
FIELD: chemistry.SUBSTANCE: invention relates to a polymer composition for structural purposes based on fluoroplastic and powder filler and can be used in making seals for flange joints of containers containing aggressive substances, and devices operating in corrosive media. Composition contains fluoroplastic and filler in following ratio of components, wt%: fluoroplastic grade F-4M 75–95, nickel powder with average particle size from 2 to 10 mcm 5–25.EFFECT: improved operational properties, in particular, low moisture permeability, modulus of elasticity while maintaining high corrosion resistance, which ensures tightness of container with corrosive medium for longer period of time; providing lining for maintaining air-tightness of flange joints containers and longer service life of container during long-term storage of aggressive substances, for example waste uranium hexafluoride, without their discharge to 80–100 years; providing sealing of flange joints or gaskets of flanges of gas centrifuges for production of uranium hexafluoride with 2-times longer service life.1 cl, 5 tbl, 5 ex
ethod of treating surface of particles of inorganic pigment and method for production of plastics, coatings and laminates using said obtained inorganic pigment // 2607402
FIELD: construction.SUBSTANCE: invention can be used in production of plastics, coatings or laminates. Method of treating surface of particles of an inorganic pigment involves obtaining an aqueous suspension of particles of an inorganic pigment. In a separate container inorganic compounds are precipitated from an aqueous solution by mixing at least two components in aqueous solution and with proper control of value of pH and/or temperature. Suspension of precipitation product is formed, which is then added to aqueous suspension of particles of inorganic pigment. Precipitation product consists of agglomerates of fine primary particles and/or separate crystals. Precipitated inorganic compounds are oxide or sulphate, for example an oxide of silicon, aluminium, zirconium or titanium or mixtures thereof.EFFECT: invention increases covering capacity of inorganic pigments, their resistance to ageing, opacity, brightness and reducing power.11 cl, 5 dwg, 1 tbl, 2 ex
Composition based on water-dispersible polymer, method for production thereof and use thereof // 2607205
FIELD: chemistry.SUBSTANCE: invention relates to a composition based on water-dispersible polymer, a method of producing said composition and use thereof. Composition based on water-dispersible polymer includes (a) at least one of: (i) terminal hydroxyl group-containing dendritic polymer with theoretical number of terminal functional groups, equal to 16 or at least from 32-64 in a mixture with the hydrophilic functionalising agent; or (ii) containing functional hydroxyl groups of dendritic polymer with theoretical number of terminal functional groups, equal to 16 or at least from 32 to 64, of which at least 5% of terminal hydroxyl groups are functionalised with a hydrophilic group; and (b) non-dentritic polymer, capable of forming bonds with said dendritic polymer to form polymer hybrid dendrimer-non-dendrimer (DND), which can be dispersed in aqueous phase, wherein said non-dendritic polymer is selected from a group, consisting of polyester, polyacrylate, polyurethane, polyurethane dispersion (PUD), polyester polyol, polyurethane polyol, polyacrylate polyol, polycarbonate, polycarbonate polyol, copolymers and mixtures thereof.EFFECT: coatings according to invention have high hardness, resistance to chemicals, resistance to action of alkalis, water and solvents.20 cl, 2 dwg, 10 tbl
Vehicle part coating including methacrylic resin // 2607091
FIELD: transport.SUBSTANCE: invention relates to vehicle part cover. Vehicle part cover comprises methacrylic resin (I), having weight-average molecular weight, measured by gel-chromatography (GPC) method, equal to from 70,000 to 230,000, residual monomers content from 0.1 % to 1 % by weight, and weight loss percentage during holding for 30 minutes at approximately 270 °C is equal to 1.2 % or less. Methacrylic resin (I) contains: 50–97 % by weight of link based on methacrylate monomer (A); 3–30 % by weight of structural link (B), having annular structure in main chain and representing, at least one link selected from group, consisting of structural link based on maleimide, structural link based on glutaric anhydride, structural link based on glutarimide and structural link based on lactone ring; and 0–20 % by weight of link based on another vinyl monomer (C), which is copolymerizing with methacrylate monomer.EFFECT: technical result is high thermal stability, transparency, heat and moisture resistance, article thermal stability, manufacturability when processing by moulding.17 cl, 5 tbl, 32 ex
"core-shell" type microgel emulsifier and "oil-in-water" emulsion composition // 2607088
FIELD: chemistry.SUBSTANCE: described is a cosmetic composition in form of a Pickering type "oil-in-water" emulsion for skin or hair, containing a "core-shell" type microgel emulsifier, oil phase ingredients and aqueous phase ingredients, where "core-shell" type microgel emulsifier consists of a copolymer, typically obtained by polymerising polyethylene oxide macromonomers of following formula (1), hydrophobic monomers of following formula (2) and cross-linking monomers of following formula (3) in following conditions (A) and (B): (A) molar ratio of initial molar amount of said polyethylene oxide to initial molar amount of hydrophobic monomers is 1:10–1:250, (B) initial amount of said cross-linking monomers is 0.1–1.5 wt% with respect to initial amount of said hydrophobic monomers; (1), where R1 denotes alkyl having 1–3 carbon atoms, and n is an integer from 8 to 200, X denotes H or CH3; (2), where R2 denotes alkyl having 1–3 carbon atoms, and R3 denotes alkyl having 1–12 carbon atoms; (3), where R4 and R5 each independently denotes alkyl having 1–3 carbon atoms, and m is a number from 0 to 2, where amount of "core-shell" type microgel emulsifier is 0.01–10 wt% with respect to total amount of composition in form of Pickering emulsion. Also described is a method of producing said cosmetic composition in form of a Pickering type "oil-in-water" emulsion, which includes: mixing and dispersing "core-shell" type microgel emulsifier in water or aqueous phase ingredients, adding oil phase ingredients and other ingredients, and emulsifying mixture by mixing and applying a shear force. Invention also describes use of said "core-shell" type microgel emulsifier for producing a cosmetic composition in form of Pickering type "oil-in-water" emulsion for skin or hair.EFFECT: obtaining a composition in form of emulsion with improved emulsification stability, with low skin irritation and low sensation scratchiness and powderiness.5 cl, 1 dwg, 14 tbl, 20 ex
Slurry phase polymerisation process // 2607086
FIELD: chemistry.SUBSTANCE: invention relates to polymerisation of olefin in suspension reactors. Slurry process for polymerisation of ethylene is disclosed. Average polymerisation productivity [kg PE (polyethylene)/kg catalyst] per unit ethylene per 1 h, a1 during operation at any first residence time r1 is less than 1.7(a2r2-a1r1)/(r2-r1), where a2 is average polymerisation productivity [kg PE/kg cata] per unit ethylene per 1 h during operation at any second residence time r2 where r2>r1.EFFECT: technical result is increased efficiency during operation of reactor at high speed of obtaining polymer per unit volume of reactor.14 cl, 3 dwg, 3 tbl, 8 ex
Biodegradable substance based on renewable raw material // 2606990
FIELD: biology.SUBSTANCE: present invention relates to biodegradable composition for biodegradable producing materials and articles, in particular, wrapping films. Biodegradable composition based on a renewable material obtained from a filler, water and plasticisers, in which starch is used as a filler used and gelatine and polyvinyl acetate are used as plasticisers. Additionally, as a structure-forming additive the biodegradable composition may use sodium salt of carboxymethyl cellulose in the amount of 5–15 wt%, other plasticisers, particularly dimethylsulphoxide in the amount of not more than 25 wt%, carbamide and (or) glycerol in the amount of not more than 20 wt%.EFFECT: technical result: development of a biodegradable composition from natural renewable material that allows production of a wide range of materials and articles with a preset biodegradation life from several seconds to several days.8 cl, 6 ex
Two-component sealing compound // 2606987
FIELD: chemistry.SUBSTANCE: invention relates to chemistry, particularly, to sealing compositions, and can be used to seal double-glazed windows, in particular, as a curing polysulphide (thiocol) sealant applied on outer wall spacer block and binds along outline adjacent sheets of glass of double-glazed window. Two-component sealing compound consists of sealing component A and curing component B. Component A is based on polysulphide oligomer and contains glycidoxypropyltrimethoxysilane as adhesive additive, chemically precipitated chalk and plasticiser as filler. Component B is based on manganese dioxide and contains diphenyl guanidine and tetramethylthiuram disulphide as a vulcanisation accelerator and a plasticiser as filler. Before use, components A and B are mixed with each other at a ratio of 10:1 vol.pts, respectively. Both components also include titanium dioxide.EFFECT: technical result provided using disclosed sealant is improved operating properties thereof.3 cl, 3 tbl
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
ethod of anti-turbulent additive producing with monomer recycling // 2606975
FIELD: machine building.SUBSTANCE: invention relates to production of anti-turbulence additives, reducing hydrodynamic resistance in oil and oil products transportation pipelines. Disclosed is anti-turbulent additive producing method with monomer recycling with (co) polymerization in mass of higher α-olefins to preset degree of conversion of 5–15 %. Formation of (co) polymer solution in monomer involves (co) polymer depositing due to reaction mixture contact with precipitator with simultaneous polymerization process stoppage. Used precipitation agent is substance with boiling temperature higher than monomer boiling point. Before obtained (co) polymer deposition precipitator is placed in separate deposition reactor and heated to temperature of 40–75 °C. Supply of polymerization product in precipitator is carried out at precipitator excess in vol. ratio of polymer:precipitator from 1:1.35 to 1:3.8. Deposition is carried out in deposition reactor by mechanical mixing at mixing rate of 300 rpm with simultaneous distillation of unreacted monomer. Anti-agglomerator is added after reaching of polymer content level in suspension, corresponding to its required amount in additive.EFFECT: technical result is combination of anti-turbulent additive producing process stages, providing sparing unreacted monomer regeneration conditions for preservation of its structure, reducing duration of polymer presence in monomer solution to reduce its mechanical destruction.1 cl, 2 tbl, 8 ex
ethod of inhibiting undesirable radical polymerization of acrylic acid available in liquid phase p // 2606953
FIELD: technological processes.SUBSTANCE: present invention relates to a method of inhibiting undesirable radical polymerization of acrylic acid in liquid phase P in storage or process operation, content of acrylic acid which is at least 10 wt %, and which, in terms of weight contained in it of acrylic acid, additionally contains 100 ppm by weight to ≤ 5 wt% propionic acid and from 100 ppm by weight to ≤ 5 wt% of glyoxal. According to the invention to liquid phase p is added at least one chemical compound of copper element, and at least one chemical compound containing copper in one of degrees of oxidation +2, +1, added in amount which provides content of added copper in liquid phase P in terms of the molar amount of acrylic acid contained therein, in the amount of 0.01 mole ppm to 5 mole per cent, the liquid phase P is subjected to thermal separation different from crystallization.EFFECT: effective prevention of undesirable radical polymerization of acrylic acid.16 cl, 2 ex
Coating composition for protecting underwater surfaces from biofouling // 2606777
FIELD: chemistry.SUBSTANCE: invention relates to means of protection from fouling by marine organisms (algae, maxillopods, mussels and others) of underwater parts of ship hulls and hydrotechnical structures, particularly to anti-fouling paints, and can be used in shipbuilding industry and hydraulic engineering. Proposed is a composition based on a vinyl polymer and oxides of transition metals in concentrations required for suppression of fouling, but not toxic for biofouling organisms, with addition of colophony, herewith the composition is additionally introduced with a salt or a mixture of salts of the same transition metals, herewith the said salt or salt mixture is introduced in the form of a colloidal solution of silica sol obtained by acid hydrolysis of silicon alkoxy compounds.EFFECT: technical result is higher concentration of bioactive ions in the water layer, as well as the possibility of controlling the rate of leaching.6 cl, 1 tbl, 1 ex
Water-based coating compositions // 2606632
FIELD: chemistry.SUBSTANCE: invention relates to coating compositions. Coating composition contains components, obtained using a method which includes: a) reacting epoxidised vegetable oil with material containing hydroxyl functional groups, in presence of an acid catalyst to form a fatty polyol, containing hydroxyl functional groups; b) mixing fatty polyol, containing hydroxyl functional groups, with a functional polyolefin copolymer to form a mixture; c) reacting mixture with ethylenically unsaturated monomeric component in presence of an initiator to form a graft copolymer; and d) cross-linking graft copolymer in presence of a cross-linking agent to form a composition for producing coatings, where graft copolymer or cross-linked graft copolymer is inverted in water. Invention also discloses a method of production and substrates, on which coating is applied.EFFECT: technical result is coating has high corrosion resistance, resistance to turbidity, to prolonged action of movable medium under pressure, manufacturability during production of articles.23 cl, 2 tbl, 8 ex
Aqueous pour point depressant dispersion composition // 2606626
FIELD: oil industry.SUBSTANCE: invention relates to an aqueous pour point depressant dispersion composition for improving fluidity of crude oil at low temperatures. Composition contains an ethylene vinyl acetate copolymer, a dispersing agent, water and optionally an aqueous pour point depressant.EFFECT: obtained pour point depressant lowers setting point of crude oil, exists in liquid state in a wide temperature range and demonstrates long-term resistance to creaming.11 cl, 1 dwg, 3 tbl, 10 ex
ethod for preparing aqueous pour point depressant dispersion composition // 2606625
FIELD: oil and gas industry.SUBSTANCE: invention relates to method of preparing an aqueous pour point depressant dispersion composition for improving fluidity of crude oil at low temperatures. Method comprises steps of combining in an extruder ethylene vinyl acetate copolymer, a dispersing agent and water to form an aqueous dispersion of ethylene vinyl acetate copolymer which optionally can be mixed with an aqueous freezing point depressant.EFFECT: obtained pour point depressant reduces pour point of crude oil, exists in liquid state in a wide temperature range and demonstrates long-term resistance to creaming.10 cl, 1 dwg, 3 tbl, 10 ex
Composition used for making foamed material based on tannins, foamed material obtained from said composition and method of making said foamed material // 2606621
FIELD: chemistry.SUBSTANCE: invention relates to a composition for making a foamed material. Composition contains tannins of flavonoid type, primarily of prorobine-di-thynidine and/or profiz-thynidine type, in the amount of 40–45 wt% of the composition, furfuryl alcohol in the amount of more than 20 wt% of the composition, water, a foaming agent and a catalyst, herewith does not contain formaldehyde. Also proposes are an organic foamed material based on tannins and a method of its production.EFFECT: this composition allows to produce a foamed material with high characteristics, which is cheap and can be used in construction and automotive industry.15 cl, 4 dwg, 2 tbl
Epoxy binder // 2606614
FIELD: chemistry.SUBSTANCE: invention relates to epoxy binder for polymer composite materials of structural purposes and can be used in production of shells of revolution of “cocoon” type. Invention improves rheological properties of binder, prolongs life thereof and improves physical and mechanical characteristics of composite material based on polymer matrix and fibrous filler from aromatic polyamide of Armos type, and improves processability of binder due to reduced temperature and mixing time of binder.EFFECT: invention consists in exclusion from formulation of epoxy binder UP-2217 powdered aromatic hardener Diamet-X and replacing it with an adduct of diethyl toluylene damine with aminophenol epoxy resin (liquid hardener XT-187B) at optimum concentration of 30 pts.wt.1 cl, 1 dwg, 7 tbl
Diisononyl terephthalate (dint) as softener for thermoplastic applications // 2606605
FIELD: technological processes.SUBSTANCE: invention relates to use of diisononyl terephthalate (DINT) as a plasticiser for increasing low-temperature flexibility and/or for enhancing permanence of polyvinyl chloride compositions for thermoplastic uses. Also described is a plastic article containing a thermoplastic composition produced by thermoplastic processing, where glass transition temperature of polyvinyl chloride composition is -30 °C.EFFECT: providing a plasticiser, having high permanence with corresponding final use and therefore with low tendency to migration and volatility, as well as good low-temperature elasticity of cable coatings and sheaths, that is, preservation of flexibility even at low temperature and absence of brittleness.9 cl, 5 tbl, 1 ex
Foaming article // 2606603
FIELD: personal usage items.SUBSTANCE: invention relates to product suitable for ear plug formation, and article which is ear plug. Article comprises elongated core or base containing first material and having first and second ends or main surface, and outer layer or outer main surface, containing thermoplastic second material, covering at least part of outer main surface of elongated core or base and including inactivated foaming agent with expanding spheres and inactivated chemical foaming agent. At that, inactivated foaming agents can be activated to increase volume of external layer and core has stiffness exceeding outer layer stiffness.EFFECT: providing easy insertion into ear canal, not requiring preliminary compression or "rubbing" of noise suppressing part, wherein outer layer provides adequate comfort when placed in user ear canal.10 cl, 13 dwg
2,5-furan dicarboxylic acid-based polyesters prepared from biomass // 2606515
FIELD: chemistry.SUBSTANCE: present invention relates to polyesters wholly or partially made from biomass. Described is a copolyester formed from following monomers: (i) 2,5-furan dicarboxylic acid, (ii) 1,4-butanediol, (iii) terephthalic acid, (iv) ethylene glycol. Also described is a polyester, formed from following monomers (i) 2,5-furan dicarboxylic acid or lower alkylester thereof, (ii) 1,4 butanediol, isosorbide or combinations thereof, (iii) terephthalic acid, and (iv) ethylene glycol. Described is an article containing said copolyesters. Also described is a method of producing copolyester based on 2,5-furan dicarboxylic acid, wherein present method includes: combination of monomers (i) 2,5-furan dicarboxylic acid or lower alkylester thereof, (ii) 1,4 butanediol, isosorbide or combinations thereof, (iii) terephthalic acid, (iv) ethylene glycol, and catalyst for production of reaction mixture; mixing reaction mixture in a stream of nitrogen; gradually heating reaction mixture to a first temperature of about 200–230 °C, and maintaining first temperature for about 8 to about 12 hours; gradually heating reaction mixture to second temperature, ranging from about 240 to 260 °C, and maintaining second temperature for about 12 to about 18 hours; removing water from reaction mixture; and extracting obtained copolyester.EFFECT: technical result is cheaper and more efficient method of producing copolyesters with desirable physical and thermal properties.10 cl, 58 dwg, 4 tbl, 9 ex
ethod for production of high melt flow propylene-based polymer and products made therefrom // 2606512
FIELD: chemistry.SUBSTANCE: invention relates to a method for olefin polymerisation using a Ziegler-Natta catalyst for producing propylene-based polymer. Method involves reacting under polymerisation conditions and in presence of hydrogen (H2) of propylene and optionally one or more comonomers with a catalyst composition including a procatalyst composition, containing 3,6-disubstituted-1,2-phenylene dibenzoate, a cocatalyst and an external electron donor. During reaction molar ratio H2/propylene is maintained from 0.005 to less than 0.1 and a propylene-based polymer with melt flow rate of more than 10 g/10 min is formed.EFFECT: method enables to obtain propylene-based olefins with high melt flow rate.14 cl, 3 tbl
Graft polymer and thermoreversibly cross-linked bitumen/polymer composition containing such graft polymer // 2606499
FIELD: chemistry.SUBSTANCE: invention discloses a graft polymer, comprising a main polymer chain P, containing conjugated diene links; at least one side graft chain G, represented by general formula (1) R-(OCH2CH2)m-S-, (1), where R is a saturated, linear or branched hydrocarbon chain, containing at least 18 carbon atoms, and m is an integer, ranging from 0 to 20, wherein said graft chain G is bonded to main polymer chain P through a sulphur atom of formula (1); and at least one grafted chain G', represented by general formula (4) -S-R’-S-, (4), where R’ is s hydrocarbon group, saturated or unsaturated, linear or branched, cyclic and/or aromatic, containing from 2 to 40 carbon atoms, optionally containing one or more heteroatoms, wherein said graft chain G' is bonded to main polymer chain P using each sulphur atom from formula (4). Invention discloses a method of producing graft polymer and use thereof to obtain thermoreversibly cross-linked bitumen/polymer composition. Present invention also relates to thermoreversibly cross-linked bitumen/polymer composition, containing such graft polymer, method for production thereof and to a bitumen mixture, including such composition.EFFECT: technical result is improvement of rheological properties, in particular, mechanical and elastic properties, and cohesive capacity thermoreversibly cross-linked bitumen/polymer compositions.20 cl, 2 tbl
ethod of producing organic solution of dialkyl peroxydicarbonate // 2606498
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing dialkyl peroxydicarbonate in a liquid organic solvent (S). Method is carried out at least partially in presence of liquid organic solvent (S), and includes at least one step during which alkyl haloformate reacts with inorganic peroxide in medium containing water and solvent (S). Solvent (S) is selected from compounds of empirical formula A-(CnH(2n-2))-B (I), in which: -A is chlorine (A1) or functional group (A2), corresponding to structure R-C(=O)-O-, where R is a substituted or unsubstituted, linear or branched C1-C20 alkyl radical; -B is a hydrogen atom or, when A is not (A2), chlorine (A1); and n such that 3 ≤ n ≤ 8. Objects of invention also include an organic solution of dialkyl peroxydicarbonate in solvent (S) and method of producing polymer formed from one or more halogenated ethylenically unsaturated monomers, in presence of obtained organic solution of dialkyl peroxydicarbonate as an initiator. Used solvent (S) exhibits a property of being incorporated into growing macromolecular chains of polymers, derived from halogenated ethylenically unsaturated monomers.EFFECT: technical result is production of a stable organic solution of dialkyl peroxydicarbonate "ex situ", which increases efficiency of polymerisation method.14 cl, 1 tbl, 7 ex
Double curing system // 2606444
FIELD: manufacturing technology.SUBSTANCE: invention relates to multicomponent curable composition used in production of reinforced and non-reinforced plastics, as well as coatings, and could be used in shipbuilding, in construction, for example during roofing works, production of floor coatings, laminates, as well as, in particular, in high-energy unit making. Multi-component composition contains first component containing mixture of (i) epoxy resin, (ii) unsaturated polyester or vinyl ester resin and optionally (iii) peroxyester, second component containing amine curing agent for epoxy resin and at least one transition metal compound selected from iron, copper and manganese compounds, and at least, in case of first component which does not contain peroxyester, third component containing peroxide.EFFECT: invention provides sufficient hardness after curing at room temperature and other required properties.14 cl, 1 tbl, 5 ex
Epoxy composition for making articles from polymer composite materials by vacuum infusion // 2606443
FIELD: chemistry.SUBSTANCE: invention relates to preparation of epoxy compositions and can be used for making articles from polymer composite materials by vacuum infusion, including using filler made by weaving, in power engineering, construction, aircraft, machine building, ship-building industries and other industries. Epoxy composition contains an epoxy base containing epoxy resin and an active diluent – aliphatic glycidyl ether and aromatic glycidyl ether, and a curing system based on amine curing agents – polyetheramine and isophoronediamine. Epoxy resin can contain one resin or a mixture of resins based on bisphenol A with molecular weight of 340–430. Ratio of epoxy base and curing system in composition is, pts.wt – 100:(22–33).EFFECT: invention enables to create high-technology epoxy composition for infusion technique of producing polymer composite materials with optimum gelling time at room temperature of processing into polymer composite material, characterised by high thermomechanical (glass transition temperature) and physical and mechanical properties (tensile strength and static bending).7 cl, 3 tbl, 18 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
Resin composition for making pipes based on rigid upvc with high strength and resistance to hydrostatic pressure, and pipes made from rigid upvc // 2606437
FIELD: chemistry; valve production.SUBSTANCE: invention relates to resin compositions for pipes made from rigid impact-resistant polyvinyl chloride (UPVC), having excellent strength and resistance to hydrostatic pressure, which contains polyvinyl chloride (PVC) with K value to from 72 to 84, from 1 pts.wt to 3 pts.wt tin stabiliser and from 1 pts.wt to 10 pts.wt lubricant based on methacrylate per 100 pts.wt PVC resin with K value from 72 to 84.EFFECT: invention also relates to a pipe made from rigid UPVC, having excellent strength and resistance to hydrostatic pressure, made by extrusion of said resin composition.7 cl, 2 tbl
Elastomeric mixture exhibiting very good dispersion of filler in elastomeric matrix // 2606421
FIELD: manufacturing technology.SUBSTANCE: invention relates to a rubber composition with good dispersion of filler. Method comprises preparing a rubber composition based on diene elastomer, filler containing carbon black and inorganic filler containing inorganic filler less or equal to 50 wt% per 100 pts.wt elastomer. Rubber composition contains a crosslinking system, and dispersion of filler in elastomer matrix has a value Z greater than or equal to 80. First mother batch of diene elastomer and carbon black is obtained first. Inorganic filler is introduced into dried first mother batch.EFFECT: invention reduces hysteresis and improves tear resistance.16 cl, 3 tbl
Organopolysiloxane polymers // 2606393
FIELD: chemistry.SUBSTANCE: invention relates to novel polyorganosiloxanes. Disclosed is a block cationic polyorganosiloxane of formula MwDxTyQz, wherein at least one of M, D or T comprises at least one fragment of structure (I).EFFECT: technical result is disclosed block cationic polyorganosiloxanes are stable during storage, can be used in compositions of various consumer products, giving them capacity to be efficiently deposited on predetermined substrates for endowing them with useful consumer properties, such as hair conditioning, straightening, softening and antistatic properties.28 cl, 7 tbl, 85 ex (I)
Organopolysiloxane polymers // 2606390
FIELD: chemistry.SUBSTANCE: invention relates to novel polyorganosiloxanes. Disclosed is a block cationic polyorganosiloxane of formula MwDxTyQz, wherein at least one of M, D or T comprises at least one fragment of structure (I).EFFECT: technical result is disclosed block cationic polyorganosiloxanes are stable during storage, can be used in compositions of various consumer products, giving them capacity to be efficiently deposited on predetermined substrates for endowing them with useful consumer properties, such as hair conditioning, straightening, softening and antistatic properties.28 cl, 7 tbl, 85 ex (I)
ethod of producing metal-doped polyaniline // 2606231
FIELD: chemistry.SUBSTANCE: invention relates to production of polyaniline, doped with a metal, which can be used in electronic engineering for making gas sensors, electrodes of capacitors, etc. Method comprises first preparing a reaction mixture: dissolving oxidising agent in a pure solvent, adding a dopant with concentration 0.1–0.5 mol/dm3. Further, while stirring, adding an aniline monomer in droplets. In obtained reaction mixture is placed a glass substrate. Polymerisation is then carried out for 40–60 hours at 30 °C. During polymerisation polyaniline is deposited on substrate. Dopant used is a metal salt, selected from a group comprising copper chloride (II), zirconium (IV) oxychloride, tin (II) chloride.EFFECT: invention simplifies method of producing polyaniline on a substrate during polymerisation.1 cl, 3 ex
ethod of producing acylated vinylamine-containing polymer and use thereof as papermaking additive // 2606227
FIELD: technological processes.SUBSTANCE: invention describes a method for producing acylated vinylamine-containing polymer comprising steps of: a) conducting free radical polymerisation of N-vinylformamide in an aqueous solution; b) conducting alkaline hydrolysis to form vinylamine-containing polymer and c) reacting vinylamine-containing polymer with at least one acylating agent, wherein acylating agent is selected from a group consisting of carboxylic acid anhydride, acyl halide and mixtures thereof, and wherein acylation temperature ranges from about 20 to about 50 °C and wherein carboxylic acid anhydride is not a cyclic anhydride.EFFECT: technical result consists in application of acylated polymer in making paper as additives for increasing strength in dry state, retention and dehydrating agents, as well as agents for inhibiting formation of deposits of resin and adhesive materials.13 cl, 32 ex, 3 tbl
Styrene-butadiene rubber with high content of styrene and vinyl links and methods for production thereof // 2606129
FIELD: chemistry.SUBSTANCE: invention relates to a styrene-butadiene rubber based on a solution with high content of styrene and vinyl links with defined content of styrene. Described is a polymer which contains (a) a styrene unit with number of styrene links of 4-6, 27–50 wt% of total content of styrene in polymer, (b) vinyl from more than 30 to 80 wt% of total amount of polymerised 1,3-butadiene, (b) a styrene 40–70 wt% of total weight of polymer. Also described is a method for polymerisation of said polymer, a composition containing said polymer, and products containing at least one component produced from said composition.EFFECT: technical result is production of styrene-butadiene rubber with high content of styrene and vinyl links with narrow molecular weight distribution.20 cl, 5 ex
acro initiator, containing hydrophobic segment // 2606127
FIELD: ophthalmology.SUBSTANCE: invention relates to moistening agents for contact lenses. Moistening agent for contact lenses is disclosed, which contains block-copolymer of certain structure, consisting of hydrophilic and hydrophobic segments, wherein molecular weight of hydrophobic segment is 300–1,800. Solution of said moistening agent is also disclosed, as well as method of improving wettability of lens with it.EFFECT: technical result - disclosed moistening agent allows to significantly increase wettability of treated lens and reduce absorption of lipids and proteins with preservation of optical characteristics of lens.24 cl, 4 tbl, 18 ex
Polyacrylic acid based on obtained from biological material acrylic acid and derivatives thereof // 2606124
FIELD: chemistry.SUBSTANCE: invention relates to production of a superabsorbent polymer from polyacrylic acid basing on obtained from a biological material acrylic acid. Superabsorbent polymer composition is produced from an acrylic monomer composition, herewith the said acrylic monomer composition consists of acrylic acid, derivatives of acrylic acid or mixtures thereof, herewith the said composition of acrylic acid contains at least approximately 98 wt% of acrylic acid, derivatives of acrylic acid or mixtures thereof, and also part of the remaining impurities in the said composition of acrylic acid is lactic acid, derivatives of lactic acid or mixtures thereof, herewith the said composition for a superabsorbent polymer is obtained using method (I), which includes the stage of: a. receiving a pre-polymerizing solution containing: i. said acrylic composition and ii. solvent; and herewith pH of the said pre-polymerizing solution is less than approximately 6; or using method (II), which includes the stages of: a. obtaining the pre-polymerizing solution containing: (i) said acrylic composition and (ii) solvent; b. mixing the base with the said pre-polymerizing solution to form a partially neutralized solution of acrylic acid, and herewith pH of the said partially neutralized solution of acrylic acid is less than approximately 6. Disclosed are versions of compositions and absorbent products versions.EFFECT: superabsorbent polymer shows when using the same result as a superabsorbent polymer if the monomer is obtained from oil.50 cl, 1 tbl, 7 ex
ethod of reactors with air core impregnating, reactor with air core subjected to impregnation and application of impregnation system // 2606120
FIELD: physics.SUBSTANCE: invention discloses method of reactors with air core or parts of reactors with air core impregnation, including following stages: i) manufacturing of reactor with air core or reactor part with air core, ii) application of impregnation system on reactor with air core or reactor part with air core, wherein said impregnation system includes: a) one or several components representing polyphenol polyglycidyl ether; b) one or more plasticizers, selected from polypropylene glycol or polyethylene glycol; c) dicyandiamide and d) one or more accelerators, selected from group including imidazole, imidazole derivatives, urea derivatives and mixtures thereof, iii) hardening of reactor with air core impregnation or reactor part with air core impregnation. Also disclosed is reactor with air core or reactor part subjected to impregnation. Disclosed is application of reactor with air core or reactor parts impregnation system.EFFECT: technical result consists in producing impregnation system with high cracking resistance and resistance to hydrolysis for reactors with air core.12 cl, 4 dwg, 3 tbl, 2 ex
Stabilization of iodine-containing compounds with nitrogen-containing polymers // 2606091
FIELD: biotechnology.SUBSTANCE: invention relates to biocides. Obtaining nitrogen-containing polymers from aziridines in the presence of water.EFFECT: used for stabilization of iodine-containing biocidal compounds.13 cl, 5 tbl, 4 ex
Powdered epoxy coating compositions, methods and articles // 2605985
FIELD: chemistry.SUBSTANCE: invention relates to powder coating compositions, which provide protective coatings, in particular flexible coatings resistant to damages. Powder coating composition contains solid capable of cross-linked epoxide resin; particles of rubber of the core-shell structure in an amount of not more than 10 wt.% based on the total weight of the coating composition; a curing agent and a filler material in an amount of at least 25 wt.% based on the total weight of the coating composition; herewith the components are selected and used in the amounts to provide a cured coating not having reduced density, or in case of reduced density, it is not more than 15 % of theoretical density of a coating composition.EFFECT: formation of flexible and resistant to damages coatings.19 cl, 1 dwg, 3 tbl
Obtaining and application of composite material containing fibres and at least one vinyl chloride polymer // 2605970
FIELD: materials.SUBSTANCE: invention relates to composite materials used for fibrous reinforcement, and refers to method of fibre containing composite material producing and using and at least one vinyl chloride polymer. Composite includes fibres immersion into said polymer hydrosol to produce said hydrosol coated fibres, followed by drying and applied on fibers hydrosol gelation. Composite material is used for internal accessories in automobile, ship building, furniture industry, in particular, for producing reinforced articles and shapes.EFFECT: invention provides creation of easily utilized composite material for making products with higher rigidity.20 cl, 3 dwg, 3 ex
 
2551204.
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