Compositions of polysaccharides or of their derivatives not provided for in group and c08l0001000000 and or c08l0003000000 (C08L5)

C   Chemistry; metallurgy(315514)
C08L5                 Compositions of polysaccharides or of their derivatives not provided for in group ; c08l0001000000; or c08l0003000000(504)
ethod of preparing binding // 2626638
FIELD: chemistry.SUBSTANCE: binder preparation is carried out in two stages: in the first phase, butadiene-styrene termoelastoplast mixed with mineral oil in mixer volumetric type at a temperature of 40-50°C until full absorption, on the second-a mineral oil impregnated polymer granules mix In a two-shaft high-shear mixer at a temperature of 70-90°C to complete the transition in the viscous State. As a mineral oil, vaseline or industrial oil is used.EFFECT: enables the improvement in performance of a quality Binder, increase in security, and the process of preparing the energy compounds.2 cl, 2 tbl
Water binding means for grain and/or fiber substrates // 2624302
FIELD: chemistry.SUBSTANCE: aqueous dispersion of the polymer P comprises, wt %: ≥0.1 and ≤2.5 acrylic acid, methacrylic acid and/or itaconic acid (monomer A), ≥0.1 and ≤1.5 allyl methacrylate (monomer C), ≥0.1 and ≤5.0 N-methylolacrylamide and/or N-methylol methacrylamide, ≥25 and ≤69.7 n-butyl acrylate, and/or ethyl acrylate, ≥30 and ≤70 styrene (monomer F). The amounts of monomers A, C, D, E, F in total amount to 100 wt %. The aqueous binder formulation further comprises a saccharide compound S selected from hydroxypropylated potato starch, the amount thereof being such that it is ≥10 and ≤400 wt. parts per 100 wt. parts of the polymer of P. Total amount of the saccharide compound S is added to the aqueous dispersion of the polymer P. Method of producing a molded article from fibrous substrates, the use of an aqueous composition of a binder as a binder for fibrous substrates, non-cement coatings, sealants and adhesives and the use of a moulded article for the production of bituminous roofing cloths.EFFECT: providing an aqueous dispersion of the polymerizer and an aqueous dispersion of the binder, by means of which it is possible to produce moulded articles with an improved transverse rupture force index at room temperature or reduced stretching at an elevated temperature.17 cl, 1 tbl, 13 ex
Abs-composition with improved surface following storage in a warm-humid environment // 2624157
FIELD: chemistry.SUBSTANCE: invention relates to thermoplastic polymer compositions comprising vinylaromatic copolymers obtained by emulsion polymerization, to a process of preparation of these compositions, their use, and also to moulded articles or parts. The polymer composition contains, as component A) from 0 to 98 wt. parts of an aromatic polycarbonate in terms of the sum of components A and B, component B) from 2 to 100 wt. parts, in terms of the sum of A and B. Component B) consists of components B1), B2 and B3. As a component B1), the composition contains at least one graft polymer obtained during the emulsion polymerization process. As component B2), optionally, at least one graft polymer obtained in the course of bulk polymerization, suspension polymerization or solution polymerization. As component B3), optionally, at least one styrene-acrylonitrile copolymer free of rubbers. The composition contains, as component C), from 0 to 30 wt. parts of at least one conventional polymer additive. Mentioned composition comprises at least one inorganic salt consisting of a cation selected from the group of alkali metals, alkaline earth metals and aluminium and an anion selected from the group consisting of chloride, sulfate, nitrate, phosphate, acetate and formate in a concentration of 100 to 5000 mg/kg in terms of the composition. And this salt is present in the composition solely in the form of amorphous or crystalline inclusions with a size of less than 60 mcm. The compositions are particularly suitable for the manufacture of mouldings or moulded parts with a Class A surface and high gloss surface finish, which, if necessary, were partially or completely subjected to an additional stage of surface treatment by, for example, lacquering, film moulding in casting, metallization as a result of vacuum spraying or galvanizing.EFFECT: invention provides products that are characterized by an improved surface after storage under heat and humidity conditions.13 cl, 1 tbl
Impact-modified polycarbonate compositions for the simplified production of low-temperature resistant components with high-gloss and matt component detail // 2623273
FIELD: chemistry.SUBSTANCE: moulding compositions contain mixtures of graft copolymers with a defined particle size distribution obtained by emulsion polymerization and by polymerization in bulk, solution or suspension. On the one hand, they are suitable for the production of non-lacquered parts with mirror-shining surfaces in a wide range of technological parameters (including high processing temperatures), and on the other hand, they accurately reproduce the texture of finely structured etched surfaces of moulds, mould with different surface textures in a single stage of injection moulding, it is possible to manufacture details with both mirror-shiny and deep-matt surfaces without the need for subsequent additional processing surfaces.EFFECT: moulding materials have high heat resistance and low-temperature stiffness, and excellent resistance to fatigue cracking when exposed to chemicals, which is particularly important in the case of non-varnished parts.15 cl, 7 tbl
Transparent products from graft co-polymers pvc // 2622383
FIELD: chemistry.SUBSTANCE: method comprises obtaining a basis for grafting polymerization of monomers, grafting the copolymer phase to the substrate by graft polymerisation with the formation of an emulsion latex of the graft co-polymer of vinyl chloride, copolymer of vinyl chloride grafted branch in the form of solid latex. Conditions for carrying out the method such that the glass substrate temperature to graft is below the glass transition temperature of co-polymer grafted phase. The average size of the vinyl chloride graft co-polymer particles is below 200 nm.EFFECT: method allows to obtain the graft co-polymers of vinyl chloride without the use of an external plasticiser which can be further processed into transparent films and moulded articles.18 cl, 1 tbl, 5 ex
Not containing plastificator products from grafted pvc copolymers // 2622309
FIELD: chemistry.SUBSTANCE: invention relates to a mixture for the production of articles and a mixture for regulating the degree of plasticity of PVC articles that comprise at least two different graft copolymer vinyl chloride-obtained by the emulsion polymerization process, each of the at least two different graft copolymers comprising a graft base and A graft copolymer phase, which is at least partly comprised of vinyl chloride, characterized in that the graft copolymers are different from each other by a percentage mass distribution of the grafting inoculum and the graft copolymer phase, and wherein each graft copolymer has a glass transition temperature Tg of the graft base lower than the glass transition temperature Tg of the graft copolymer phase, the mixture comprising: A) from 1 to 99 wt %, with respect to the entire mixture, of the graft copolymer A containing 30 to 59 wt %, with respect to the graft copolymer of vinyl chloride A, at least in part derived from the vinyl chloride of the graft copolymer phase with a glass transition temperature Tg in the range of from greater than 20 to 120°C and 41 to 70 wt %, with respect to the graft copolymer of vinyl chloride A, the graft base with a glass transition temperature Tg in the range of -80 to 20°C and/or B) from 1 to 99 wt %, with respect to the total mixture, a graft copolymer of vinyl chloride B containing from 60 to 74 wt %, To a graft copolymer of vinyl chloride B at least partially derived from the vinyl chloride of a graft copolymer phase having a glass transition temperature Tg in the range of from greater than 20 to 120°C and from 26 to 40 wt %, with respect to the graft copolymer of vinyl chloride B, grafting bases with a glass transition temperature Tg in the range of from -80 to 20°C, and/or C) from 1 to 99 wt %, based on the total mixture of the graft copolymer of vinyl chloride C containing from 75 up to 95 wt %, with respect to the graft copolymer of vinyl chloride C, at least in part derived from the vinyl chloride of the graft copolymer phase with a glass transition temperature Tg in the range of from 20 to 120°C and from 5 to 25 wt %, with respect to the graft copolymer of vinyl chloride C, vaccine bases with a glass transition temperature Tg in from -80 to 20°C, and D) from 0 to 75 wt %, with respect to the whole mixture, of the other components, wherein the mixture must contain at least two of the graft copolymers mentioned in A), B) and C) and wherein the sum of the components of A), B) and C) is at least 25 wt %, and the sum of the components of A), B), C) and D) is 100 wt %; and each of the graft bases is made from (meth) acrylic acid ester. The invention also relates to a process for preparing such graft copolymers of vinyl chloride and mixtures thereof, to shaped articles obtained by using these mixtures.EFFECT: obtaining materials based on vinyl chloride, which can be processed into films and molded articles with thermoplastic elastomeric properties.18 cl, 1 tbl

Solid readily soluble nonionic synthetic associative thickeners with additive which promotes dissolution and is soluble in water // 2619270
FIELD: chemistry.SUBSTANCE: present invention relates to a milled product containing a nonionic synthetic associative thickener (NSAT), a modifier of rheological properties, and water-soluble additive which promotes dissolution, and to introducing the milled product to water-based paints. Here is the description of milled product intended for the preparation of paints containing a nonionic synthetic associative thickener (NSAT), modifying the rheological properties and allowing the dissolution of a water-soluble additive, wherein NSAT rheology modifiers are selected from the group consisting of hydrophobically modified ethoxylated urethane (HEUR), hydrophobically modified polyethylene glycol (HMPEG) and hydrophobically modified polyacetal-polyether (NMRARE); the water soluble additive is sugar; and less than about 5 wt % of milled product is kept in the sieve (with 1.18 mm holes (No.16) as per the measurements according to the standard ASTM S136 - 06 Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates. The method for producing the above-milled product is also described and it has the steps of: a) obtaining NSAT rheology modifier and dissolution-initiating water soluble additive; b) mixing of rheology modifier NSAT and dissolution-initiating water soluble additive; and c) preparation of milled product from step b) product. The variants of the method for introduction of the above milled product into aqueous system comprising a water-insoluble polymer.EFFECT: invention provides improved milled product solubility in the paint containing a nonionic synthetic associative thickener (NSAT) rheology modifier.13 cl, 12 dwg, 4 tbl, 16 ex
Thermoplastic rubber mixture // 2618751
FIELD: chemistry.SUBSTANCE: thermoplastic rubber mixture contains, in parts by weight: DST 30-01 thermoelastoplastic 99-101, Mivoll filler 03-96 0-31, P-514 technical carbon 2, PN-6Sh oil 4, SKD-O low molecular weight oligomer 29- 31, zinc stearate 1, and N atsetonanil 2.EFFECT: invention allows to improve the physical and mechanical properties of the rubber mixture, to increase the relative elongation indices, and to reduce the hardness.4 tbl
Transparent product made from graft pvc copolymers // 2617648
FIELD: chemistry.SUBSTANCE: invention relates to a method for graft vinyl chloride copolymers production by emulsion polymerization, to mixtures derived from graft vinyl chloride copolymers, and to a product obtained using the graft copolymers of the invention or mixtures thereof. The method for graft vinyl chloride copolymer production includes obtaining a basis for grafting by monomers polymerization, copolymer phase grafting to the substrate by emulsion polymerization and graft vinyl chloride copolymer extraction. The glass transition temperature of the substrate must be lower than the glass transition temperature of the graft copolymer phase. The said basis for grafting is non-crosslinked, and the said graft copolymer phase is crosslinked.EFFECT: graft vinyl chloride copolymers are obtained without addition of external plasticizer, which can be used for production of transparent films and moulded articles.15 cl, 1 tbl, 6 ex

Hydrogel based on chitosan complex salt and method of its preparation // 2617501
FIELD: pharmacology.SUBSTANCE: method consists in obtaining hydrogels based on double complex salt of ascorbate hydrochloride or chitosan hydrochloride lactate, water, silicon glycerohydrogel and, further, inorganic salts NaCl or KCl. The formation of a hydrogel is the result of a combination of ionic gelling with sol-gel synthesis.EFFECT: simplification of the process by reducing the number of reagents and steps of hydrogel production; increased biological activity of the obtained hydrogel as a result of the synergistic effect of using a double complex salt of a low molecular weight chitosan, pharmacopoeial acid and a biologically active gelation agent.3 cl, 7 tbl, 16 ex

Laminates of sulphonated block copolymers with polar or active metal base // 2616659
FIELD: chemistry.SUBSTANCE: invention relates to the method for laminating of base comprising obtaining a film containing sulphonated block copolymer, the exposure to the film by water to form a partially or fully hydrated film applying said partially or fully hydrated film directly on the polar surface or the metal surface of the base, and lamination of the said partially or fully hydrated film on the said polar surface or the metal surface of the base by drying. Sulfonated block copolymer has at least one terminal block A and at least one inner block B where each A block is substantially free of functional groups of sulphonic acid or sulphonate ether, and each B block is a polymer block containing about 10 to about 100 mol % of functional groups of sulphonic acid or sulphonate ether, per the number of monomer links. The film was exposed to water and dried on a polar or active metal base. Laminates are not delaminated in the presence of water and can be used in case of different applications, including applications in the field of energy exchange.EFFECT: invention expands the range of materials used for lamination with increased water resistance properties.26 cl, 9 dwg, 7 tbl
Aqueous composition for vibration damping // 2616615
FIELD: chemistry.SUBSTANCE: aqueous polymer dispersion for vibration damping comprises a film-forming polymer in the form of dispersed particles comprising polymer phase C1 and other polymer phases P2 and P3; wherein polymer dispersion is obtained by free-radical emulsion polymerization comprising the following steps: (a) polymerization of the first monomer M1 loading to obtain polymer phase P1, followed by (b) polymerization of the second monomer M2 loading in the presence of P1 to obtain polymer phase P2, (c) polymerization of the third monomer M3 loading in the presence of P1 and P2, to obtain polymer phase P3, wherein the glass transition temperature difference between P1 and P2 is at least 20°C; the glass transition temperature difference between P2 and P3 is at least 5°C, and a chain-transfer agent is used for M1, M2 and M3 loading polymerization. A composition for essentially defect-free coating is claimed as well.EFFECT: coating for vibration damping has a good appearance without blistering.21 cl, 3 tbl
Polymer compound, resistant to ionising radiation // 2615514
FIELD: chemistry.SUBSTANCE: invention relates to polypropylene based polymeric compounds and may be used for health care products. The compound contains polypropylene with a melt flow index of 25-35 g/10 min, divinylstyrene thermoelastoplast with a melt flow index below 1 g/10 min, polycarbonate with a melt flow index of 6.51 g/10 min, sterically hindered amine, triallylisocyanurate, nanocellulose as a stabiliser, in the amount of 0.0010 to 0.0500 wt %.EFFECT: polymeric compound is high resistant to ionising radiation, increased storage life of the products made thereof.3 tbl, 6 ex

Alkylated cyclodextrin compositions and processes for preparing and using the same related applications // 2615385
FIELD: pharmaceutics.SUBSTANCE: group of inventions relates to pharmaceutics and provides a process for producing sulfoalkyl ethers of cyclodextrin ensuring a low content of the components, degrading the drug in particular the chlorides due the stage of processing by activated carbon with a conductivity of 10 µs or less, as well as to the product, obtained using said process and composition for delivery of active agents sensitive to the content of chlorides.EFFECT: group of inventions allows to reproducibly obtain sulfoalkyl esters of cyclodextrin with reduced chloride content and provides improved stability of the composition with active agents that are sensitive to chloride content.33 cl, 10 dwg, 13 tbl, 21 ex

Synthetic raw elastomeric compositions in free-flowing pellet form and process for obtaining same // 2614678
FIELD: chemistry.SUBSTANCE: invention relates to an elastomeric composition in free-flowing pellet form for production, storage and use. Raw elastomeric composition in free-flowing pellet form contains raw elastomer with molecular weight from 50,000 to 400,000 Da and 1–15 wt% of total weight of an anti-adhesive, containing inorganic filler. Inorganic filler materials are contained in composition in combination with a compatible emulsifier, capable of forming an emulsion in water. Raw elastomeric composition in free-flowing pellet form can be used as an adhesive composition when modifying asphalt and asphalt emulsion.EFFECT: invention improves efficiency of storage, application and use in production and processing of elastomer composition, enhances mechanical properties of modified asphalt.25 cl, 3 dwg, 7 tbl, 4 ex
Process for continuous production of halogen-free thermoplastic elastomer compositions // 2614277
FIELD: chemistry.SUBSTANCE: invention relates to thermoplastic elastomer compositions and methods for continuous production of said compositions. continuous method for production of dynamically cured thermoplastic elastomer comprises mixing at first stage of a mixing device of continuous action a thermoplastic resin, a halogen-free elastomer, with polyolefin content of more than 3.5 mol%, which is modified with unsaturated carboxyl compound, and a curing agent. At second stage a curing system is added, which is suitable for use with halogen-free elastomer for dynamic vulcanisation.EFFECT: invention enables to obtain materials with improved relative elongation at break and ultimate tensile strength.15 cl, 2 tbl
Hot-melt adhesive // 2613965
FIELD: chemistry.SUBSTANCE: invention relates to hot-melt adhesive, which is used for production of disposable products such as a diapers and hygiene products, which are a typical product made from nonwoven fabric. Adhesive contains (A) thermoplastic block-copolymer, which is a copolymer of vinyl-containing aromatic hydrocarbon and a conjugated diene compound, (B) propylene homopolymer, obtained by polymerisation of propylene using metallocene catalyst, (C) a tackifying polymer and (D) a plasticiser. Propylene homopolymer (B) has a melting point of 100 °C or lower and polydispersity (Mw/Mn) from 1 to 3.EFFECT: produced hot-melt adhesive is excellent for high-speed coating and application of coating using a vortex method at low temperature, and is excellent in its adhesion to polyethylene and nonwoven fabric; id est disposable products obtained using hot-melt adhesive, can be effectively made using a line for high-speed coating method, and application of coating can be performed at low temperature of about 140 °C, which is reason of higher safety; wherein disposable products are excellent in adhesion to nonwoven fabric and to a polyolefin film and less likely to peel off.5 cl, 2 tbl
Split-resistant low molecular cross-linked hyaluronate // 2613887
FIELD: biotechnology.SUBSTANCE: hydrogel is formed by sodium hyaluronate substrate with an average molecular weight of 50,000 to 100,000 Da, cross-linked with diglycidyl ether of 1,4-butanediol, which is obtained by a method comprising interaction of 8-40% solution of sodium hyaluronate with an average molecular weight of 50,000 to 100,000 Da in 0.75-1.5% aqueous solution of sodium hydroxide with the diglycidyl ether 1,4-butanediol volume of 180 to 500 moles per one mole of sodium hyaluronate.EFFECT: product has a high resistance to enzymatic degradation.14 cl, 15 dwg, 5 tbl, 14 ex
Hot-melt adhesive for disposable products // 2612718
FIELD: chemistry.SUBSTANCE: invention relates to hot-melt adhesive, in particular to an adhesive which is suitable for use in disposable products. Adhesive contains: (A) propylene homopolymer with melting temperature of 100 °C or lower, obtained by polymerisation of propylene in presence of a metallocene catalyst; and (B) wax, modified with carboxylic acid and/or anhydride of carboxylic acid.EFFECT: hot-melt adhesive is suitable for application of coating with high rate, and is characterised by improved adhesion in moist condition and ability to form a coating at low temperature.4 cl, 2 tbl
High styrene high vinyl styrene-butadiene rubber with narrow molecular weight distribution and methods for preparation thereof // 2608041
FIELD: chemistry.SUBSTANCE: invention relates to a styrene-butadiene rubber based on a solution with high content of styrene and vinyl links. Described is a polymer, containing 15–35 wt% styrene block with more than 6 consecutive styrene units, 25–80 wt% vinyl of total amount of polymerised 1,3-diene, 35–75 wt% styrene from total weight of polymer. Molecular weight distribution is equal to or less than 1.5. Described also is a method for polymerisation of polymer in presence of n-butyl-lithium, potassium-3,7-dimethyl-3-octylate and organic ester compound of formula R1-O-CH2-CH(R3)-O-R2, such as 2-(2-ethoxyethoxy)-2-methylpropane. Also described is a composition for a tyre or shoe component and a product.EFFECT: technical result is obtaining a polymer with a narrow molecular weight distribution.14 cl, 4 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
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
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
Composition based on epoxy resins and film, prepreg and fibre-reinforced plastic obtained using said composition // 2605424
FIELD: chemistry.SUBSTANCE: invention relates to compositions based on epoxy resins, which are preferably used in fibre-reinforced plastics. Disclosed is a composition based on epoxy resins for making composite materials, containing: epoxy resin, having an oxazolidone ring structure in molecule; bifunctional epoxy resin of bisphenol type with number-average molecular weight of at least 600, but not more than 1,300, having in molecule an oxazolidone ring structure; tri-block copolymer selected from poly(methyl methacrylate)/poly (butyl acrylate)/poly(methyl methacrylate) and poly(styrene)/poly (butadiene)/poly(methyl methacrylate; and a curing agent. Invention also discloses a film made from a composition based on epoxy resins, a prepreg and fibre-reinforced plastic.EFFECT: technical result is disclosed composition can provide both suitability to processing of prepreg at room temperature and suppression of occurrence of voids in moulded product, and fibre-reinforced plastic obtained from disclosed composition has excellent mechanical properties, viscosity at destruction and resistance to high temperatures.19 cl, 2 tbl, 20 ex

ethod for production of protein-polysaccharide biodegradable film // 2604223
FIELD: biotechnology.SUBSTANCE: invention relates to biotechnology, namely to compositions of homogeneous biodegradable films, which can be used for production of various items of industrial, household and medical purposes. Method for production of protein-polysaccharide biodegradable film is carried out by mixing 10 % aqueous solution of gelatine with 1-2 % solution of sodium alginate and plasticizer - glycerin, then cross-linking agent - 20 % aqueous solution of transglutaminase enzyme is added to mixture with subsequent stirring with magnetic stirrer no more than 2 minutes, wherein temperature of mixture should be 45-55 °C with further formation of film at room temperature. Invention increases strength of protein-polysaccharide biodegradable film in 2 times, stretching in 1.4 times, as well as fastens its biodegradability.EFFECT: propose compositions of homogeneous biodegradable films.1 cl, 2 tbl

ethod of bioactive chitosan-based coating application on polymer porous structures // 2600652
FIELD: materials.SUBSTANCE: invention relates to a method of coating on polymer porous structures and can be used to form composite polymer porous structures based on polylactide of medical supplies with pores size from 300 microns, characterized by high bioactivity and hydrophilic properties. Method of bioactive composite chitosan-based coating application on polymer porous structures based on polylactide, consists in modifying the surface of hydroxyapatite powder 3-aminopropyltriethoxysilane in alcohol, drying at a temperature of 70-90 °C for 3-5 hours, mixing chitosan and hydroxyapatite powder in distilled water at a temperature of 70-90 °C for 30 minutes-1 hour, addition of acetic acid up to obtaining 1M solution, stirring till homogeneity during 1-2 hours, addition of polymer porous structure in the solution, mixing for 1-2 hours, addition of 1M NaOH solution up to obtaining pH 5.5, mixing for 2-5 hours, addition of NaOH in droplets up to obtaining pH > 6, flushing porous structure with deposited composite coating in distilled water up to obtaining neutral pH.EFFECT: technical result is creation of bioactive polymer bioresorbable structure with high cells adhesion to the surface and cells conductivity.1 cl, 2 dwg

Polypropylene composition having high melt strength and preparation method thereof // 2600168
FIELD: chemistry.SUBSTANCE: invention relates to polypropylene composition having high melt strength, suitable for preparing thermoforming products and blow molded products, as well as to method for preparing them. Polypropylene composition contains a polymer base, containing 25-85 wt% of isotactic propylene homopolymer with melt flow rate (230 °C/2.16 kg) of 1.5 to 30 g/10 min and from 15 to 75 wt% of homopolymer or propylene copolymer with ethylene with melt flow rate (230 °C/2.16 kg) of 0.1 to 1.1 g/10 min, as well as radical grafting initiator, a cross-linking/branching agent representing acrylate which has two or more functional groups, primary and/or secondary amine, ether and/or alcohol hemiester and an unsaturated aliphatic acid and, optionally, other additives.EFFECT: obtained by mixing followed by granulation polypropylene composition has high melt strength and is characterized by high crystallization temperature and heat resistance.35 cl, 1 tbl, 9 ex

Isoprene copolymer and its production method // 2598376
FIELD: chemistry.SUBSTANCE: invention relates to development of isoprene polymer. Disclosed is isoprene copolymer containing styrene block or butadiene unit in its end part, where styrene monomers are less than 5 mol. % of all monomers which form isoprene copolymer containing styrene block, butadiene monomers make 10 mol. % or less from all monomers which form isoprene copolymer containing butadiene unit and content of cis-1,4 bonds in part produced of isoprene, which is equal to total at least of 95 %. Invention also discloses method of producing isoprene copolymer (versions), rubber composition and tire.EFFECT: development of a rubber composition and tire, having good resistance to tensile strength, resistance to abrasion, resistance to cracking, which characterises wear resistance.14 cl, 2 tbl, 15 ex

Composition for making foamed tyre // 2597923
FIELD: technological processes.SUBSTANCE: invention relates to a composition for making foamed tire. Composition contains 100 weight parts of mixture of olefin block-copolymer and rubber as polymer matrix, 0.02-4.0 wt% of the cross-linking agent and 1-6 wt% of the foaming agent. Olefin block-copolymer and rubber are present in amount of 50-80 wt% and 20-50 wt%, correspondingly relative to the total weight of the polymer matrix. Olefin block-copolymer is a multiblock copolymer which contains ethylene and one or more α-olefin comonomers in polymerized form and a plurality of blocks or segments of two or more polymerized units.EFFECT: invention improves elasticity, reduces hardness of the composition and provides suitability for making tyre.6 cl, 1 tbl

Implanted matrix material for regenerative medicine and method of its production (versions) // 2597085
FIELD: medicine.SUBSTANCE: invention relates to medicine, particularly to a new matrix material for tissue bioengineering and regenerative medicine and methods of its production. Matrix material is designed based on vegetal polysaccharide - pectin with etherification degree of not more than 50% and proteins of intracellular matrix-collagens I and IV types, which contains said components in the following concentrations: 0.5-2.0 wt%, 0.1-1.5 wt% and 0.01-0.5 wt%, respectively. Method of production of the implanted matrix material for regenerative medicine in the form of hydrogel involves mixing at a temperature of 5 °C max of calcium acetate solution of type I collagen to final concentration of 0.1-1.5 wt% with type IV collagen solution to the final concentration 0.01-0.1 wt%, then the produced mixture is mixed with previously prepared gel formation initiator, including calcium chloride solution in the concentration, providing a gel forming process, non-toxic buffer system in amount sufficient for neutralisation of the mixture, and sodium chloride solution up to physiological concentration; then the pectin solution is introduced with degree of esterification of 50% max to the final concentration 0.5-2.0 wt% and the gel is formed by temperature rise up to physiological. Invention also relates to a method of producing implanted matrix material for regenerative medicine in the form of hydrogel, which involves mixing at a temperature of 5 °C max of calcium acetate solution of type I collagen to final concentration of 0.1-1.5 wt% with IV type collagen solution to the final concentration 0.01-0.1 wt%, then the produced mixture is neutralised, stabilised by the non-toxic buffer system and the sodium chloride is added up to physiological concentration then the pectin solution with etherification degree of not more than 50 % to the final concentration 0.5-2.0 wt% is added, to obtain a fluid composition, from which the gel is formed.EFFECT: invention enables to obtain a biocompatible implantable materials with a low rate of biodegradation and ability to stimulate regenerative process, in particular, recovery of nerve conductors after a brain injury.10 cl, 8 dwg

Inclusion complex of disulfiram and cyclodextrin // 2592625
FIELD: pharmaceutics. SUBSTANCE: invention refers to pharmaceutical industry and deals with inclusion complex of disulfiram (DSF) and cyclodextrin (CD), selected from a group consisting of unsubstituted cyclodextrin (uCD) or substituted cyclodextrin, such as methylcyclodextrin (MCD), dimethylcyclodextrin (DMCD), trimethylcyclodextrin (TMCD) and hydroxypropylcyclodextrin (HPCD) produced by the method, in which CD, taken in a solid or dissolved in water or alcohol form, when stirred at a temperature from 20 to 70 °C is combined with DSF in the form of a solid substance, fusion or alcohol solution, where alcohol is selected from methanol, ethanol, n-propanol or iso-propanol, where molar ratio of CD and DSF ranges from 2.01:1 to 2.40:1. Obtained mixture is cooled to 0-25 °C, subjected to sterilising filtration and lyophilized, or solvent is evaporated. EFFECT: reception of water-soluble inclusion complex of disulfiram with cyclodextrin, which can be extracted with high degree of purity. 1 cl, 5 dwg, 2 tbl, 8 ex

Cross-linked nanostructured sheets produced by irrigation // 2591150
FIELD: machine building.SUBSTANCE: invention relates to increasing impact resistance of sheets made from polyacrylate by irrigation. Transparent and impact-resistant cross-linked acrylic composition consists of brittle matrix (I), having a glass transition temperature higher than 0 °C, and elastic domains having characteristic size smaller than 100 nm, consisting of macromolecular series (II) with elastic properties and glass transition temperature lower than 0 °C, characterised by number-average molecular weight between 30,000 and 500,000 g/mol, in which content of cross-linking agent is between 0.1 and 2 % by weight relative to cross-linked acrylic composition.EFFECT: improved modulus of elasticity at bending and impact resistance.15 cl, 1 dwg, 1 tbl
Cross-linked elastomeric composition and product containing said composition // 2590555
FIELD: technological processes.SUBSTANCE: invention relates to use of a product obtained by extrusion and containing a cross-linked elastomeric composition as sealing gaskets, for example, in vehicles. Cross-linked elastomeric composition an ethylene and alpha-olefin multiblock copolymer comprising polymerised ethylene and alpha-olefin units, an elastomer including a block copolymer having at least two, identical or different, aromatic blocks which are separated by at least one elastomer block, and a cross-linkable polymer which is a three-block styrene-butadiene-styrene (SBS) copolymer. Multiblock ethylene and alpha-olefin copolymer has certain molecular weight distribution index. Multiblock copolymer of ethylene with alpha-olefin has certain volume weight and fusion point, and numerical values of said variable quantities are given with certain ratio.EFFECT: invention provides an efficient composition, which provides an improved tradeoff between weak residual deformation at compression, matte or satin appearance and resistance to UV rays.12 cl

ethod of producing thermoplastic resin, characterised by excellent surface and lustre // 2588139
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing thermoplastic resin. Method of producing thermoplastic resin includes: obtaining latex from conjugated diene monomers using reactive emulsifier, graft copolymerisation of aromatic vinyl monomer and vinyl monomer with cyanic latex rubber for producing graft latex resins using hydrophobic initiator, dehydration after plasma graft latex resins for wet powder and production of extruded material by extrusion of moist powder with copolymer of vinyl aromatic monomer-vinyl cyanic monomer. Also disclosed is a composition of thermosetting resin.EFFECT: technical result is production of resin, characterised by stable lustre, not deposited on mould and characterised by excellent surface.20 cl, 2 tbl, 8 ex

Laminated sulphonated block copolymer membrane for ventilation with energy recovery // 2587445
FIELD: ventilation.SUBSTANCE: invention relates to laminated membrane for use in central unit of ventilation system with energy recovery for exchange of heat and steam between two independent incoming and outgoing air flows without their mixing. Laminated fibrous membrane has microporous supporting substrate and film laminated on microporous supporting substrate. Film composition contains sulphonated block-copolymer having at least one end block A and at least one inner block B, where each block A essentially does not contain sulphonic acid or sulphonic ester functional groups, and each block B is polymer block containing from approximately 10 to approximately 100 mol% of sulphonic acid or sulphonic ester functional groups depending on number of monomer links. Energy recovery system is also described, including multiple laminated membranes formed microporous fibrous supporting substrate and film, which contains sulphonated block-copolymer, laminated on microporous supporting substrate.EFFECT: technical result is improved values of water vapour transfer rate, particularly higher than 96 %.17 cl, 7 dwg, 2 tbl
Impact strength modifier and impact-resistant thermoplastic composition // 2583810
FIELD: chemistry.SUBSTANCE: invention relates to impact strength modifier, used for improving impact strength thermoplastics and thermosets. Impact strength modifier contains at least 10 wt% 2-octylacrylate, and is a polymer particle, having a core-shell structure. Impact-resistant thermoplastic resin composition and article contain thermoplastic resin and said impact strength modifier.EFFECT: invention increases impact strength of polymer material, while maintaining good processability and final processing properties.17 cl, 6 tbl
ethod for preparing composition based on modified sodium hyaluronate, composition based on modified sodium hyaluronate and use thereof // 2582702
FIELD: chemistry; medicine.SUBSTANCE: invention relates to a method for preparing a composition based on modified sodium hyaluronate and use thereof in various fields of medicine, veterinary medicine and cosmetology. Method of preparing a composition based on modified copolymer of sodium hyaluronate and heparin comprises forming transverse covalent bonds between hydroxyl groups residues of D-glucuronic acid and D-N-acetylglucosamine included into composition of sodium hyaluronate, and residues of α-D-glucosamine and uronic acid related to heparin, by introducing active cross-linking bifunctional agent - (polyethylene glycol) diglycidyl ether (PEGDE) in an alkaline medium. After chemical copolymerisation, reaction with cross-linking agent is stopped. Obtained reaction mixture is neutralised to pH 7.0, then subjected to tangential filtration using a membrane with cut-off threshold 0.22 mcm, concentrated and stirred until complete homogenisation. Starting material used is animal-derived sodium hyaluronate of pharmacopoeial purity, subjected to tangential ultrafiltration to remove low-molecular fragments capable of triggering inflammatory response.EFFECT: biocompatibility, biodegradability and non-immunogenicity of modified compositions based on sodium hyaluronate allows use thereof in various fields of medicine and veterinary medicine, including surgery and arthroplasty, orthopedics, traumatology, ophthalmology, dermatology, aesthetic medicine and cosmetology.1 cl, 4 dwg, 10 ex

Fire-resistant expanded polymerisates // 2581865
FIELD: chemistry.SUBSTANCE: invention relates to fire-resistant expanded polymerisates containing, as a fire-retardant system, a combination of at least one phosphorus compound as a fire-retardant and at least one sulphur compound as an additional fire-retardant or a fire-retardant adjuvant, as well as to methods of producing the said polymerisates and polymer foam plastics. Fire-resistant, preferably without using halogens, expanded styrene polymerisates, containing a blowing agent and a fire-retardant system, which is a combination of a phosphorus compound and a sulphur compound as an additional fire-retardant, wherein the phosphorus compound is elementary phosphorus and/or at least one inorganic phosphorus compound and/or at least one organic phosphorus compound of general formula , wherein residues R1, R2, R3 independently denote organic or inorganic residues, and so that the sulphur compound is elementary sulphur and/or at least one inorganic or organic sulphur or sulphur-containing compound.EFFECT: invention enables to obtain halogen-free foam plastic with optimum fire-resistance and good mechanical properties.28 cl, 2 tbl, 18 ex

ouldable, high-viscous powder based on polysaccharide and polyol // 2581863
FIELD: chemistry.SUBSTANCE: invention relates to polysaccharide and polyol powder instant at low temperatures, particles of which have essentially non-spherical shape, wherein polysaccharide and polyol physically connected to each other, polysaccharide has the shape of particles and polyol mainly has a crystalline form. Said powder is highly viscous in water and suitable for direct pressing. EFFECT: invention also relates to a method of producing said powder and its use, the powder, in particular, is intended for producing solid forms with controlled-release active agent.19 cl, 5 dwg, 3 tbl

Composition for making plate targets // 2578716
FIELD: chemistry.SUBSTANCE: present invention relates to selection of organic component for composition used for production of ecologically clean targets-cymbals for bench fire. Described is a composition for production of targets-cymbals for bench fire consisting of: (1) saponified tall sinter with softening temperature 85-95° to 25 wt%, (2) inorganic powder filler 75 wt% and (3) ether plasticizer 1 wt% of the sum of components (1)-(2).EFFECT: technical result is composition for production of targets-cymbals, characterised by environmental safety and ease of production.1 cl, 2 tbl, 4 ex

Novel composition for producing vinyl aromatic materials with impact strength, improved by structure-modifying additive // 2578321
FIELD: chemistry.SUBSTANCE: invention relates to an improved composition for production of vinyl aromatic polymers, modified rubber, where considerable improvement of impact strength of end product is caused by inclusion of a modifying additive structure at different stages of polymerisation, preferably during combined continuous phase and, in particular, on interval treatment phases. Additive is a compound of formula: where each R1, R3 is saturated or unsaturated chain of C1-C18, where R1 and R3 are identical or differ from each other, each of R2, R4, R5 denotes hydrogen, halogen or carbonised circuit consisting of C1-C18, where R2, R4, R5 are identical or differ from each other, R6 denotes a C2H4 group, n is an integer equal to or greater than 1.EFFECT: significant improvement of impact strength of vinyl aromatic polymers.13 cl, 7 dwg, 2 tbl, 3 ex

Amphiphilic polysiloxane prepolymers and their application // 2576622
FIELD: chemistry.SUBSTANCE: invention relates to amphiphilic polysiloxane prepolymers, applicable for manufacturing hydrogel contact lenses. Claimed is amphiphilic polysiloxane prepolymer, which contains hydrophilic monomer units, formed at least from one hydrophilic vinyl monomer, polysiloxane cross-linking units, formed from at least one polysiloxane cross-linking agent, containing not fewer than two terminal ethylene-unsaturated groups; dangling polysiloxane chains, each of which contains terminal ethylene-unsaturated group; and units - chain transfer agents, formed from reagent - chain transfer agent, which is not reagent of radical polymerisation with reversible chain transfer. Also claimed are hydrogel contact lenses, made of claimed amphiphilic polysiloxane prepolymer, claimed in present invention, and method for their obtaining, as well as intermediate product of obtaining claimed preolymer - polysiloxane, partly functionalised with ethylene.EFFECT: claimed prepolymer is capable of sufficiently fast hardening in mould in obtaining contact lenses without significant shrinkage.21 cl, 7 tbl, 10 ex

Adhesive composition, containing deacetylated chitosan // 2575728
FIELD: chemistry.SUBSTANCE: group of inventions relates to adhesive composition, component object, containing adhesive composition, to method of obtaining adhesive composition, to composition, obtained in accordance with the invention method, to gluing method by means of adhesive composition. Adhesive composition contains, at least, one deacetylated chitosan, acid and additional compound. Adhesive composition by the inventions intended for constructive gluing of different types of materials.EFFECT: provision of improved strength of adhesive connection and elimination of risks for health and the environment.31 cl, 1 dwg, 6 ex, 8 tbl

Inflatable article provided with gastight ply including thermoplastic elastomer and thermoplastic // 2575668
FIELD: transport.SUBSTANCE: invention relates to automotive industry. Pneumatic tire is provided with gastight elastomer ply including at least one thermoplastic poly-isobutylene block-elastomer as the sole elastomer or the mass-prevailing elastomer. Said airtight elastomer ply contains the microdomains of hot melting polymer based on at least one thermoplastic material.EFFECT: increased air tightness of tire.14 cl, 3 dwg, 2 tbl

ethod of improving flow properties of polymer melts // 2574726
FIELD: chemistry.SUBSTANCE: invention relates to a method of improving flow properties of a melt comprising a thermoplastic polymer, which includes adding to a composition of said thermoplastic polymer before or during treatment of the melt 0.005-0.5 wt %, relative to the weight of the thermoplastic polymer, of one or more comb copolymers or comb block copolymers which are obtained at a first step a) by free-radical polymerisation of an alkyl ester of acrylic or methacrylic acid with 1-10 carbon atoms in the alkyl group and, optionally, one or more monomers without an ester bond, and at a second step b) by modification in a polymer analogous transesterification reaction with a primary or secondary alcohol to form a comb or comb block copolymer. The object of the invention is also the use of said comb copolymers or comb block copolymers to improve flow properties of a melt comprising a thermoplastic polymer.EFFECT: obtained comb copolymers or comb block copolymers reduce power consumption required for processing thereof, and reduce the risk of abruptions in the melt at high shearing rates.13 cl, 15 tbl, 39 ex
ethod for obtaining hydrophilic cross-linked polymer with superabsorbent properties // 2574722
FIELD: chemistry.SUBSTANCE: method for obtaining hydrophilic cross-linked polymer with properties of supersorbent is characterised by the fact that 0.01-0.30 wt % of hydrogen peroxide is added into 5 wt % solution of polysaccharide in 2% water solution of acetic acid, which contains 0.01-0.20 wt % of formaldehyde or ascorbic acid, at temperature 18-30°C , and reaction mixture is exposed for 15-40 min with intensive mixing, After that, solution of acrylamide in (meth)acrylic acid or N,N-di(methyl)ethyloxyethylmethacrylate is introduced into reaction mass in ratio 0.1:0.9÷0.9:0.1 molar parts and 0.1-10.0 wt % of N,N-methylene-bis-acrylamide or diethyleneglycoldimethacrylate, propyleneglycoldimethacrylate and reaction mass with mixing is exposed for 3 h at temperature 18-30°C, and lyophilically dried.EFFECT: elimination of expensive components and equipment from method of obtaining cross-linked polymer.2 cl, 4 ex

Polymer mixture, possessing flowability limit and its application for obtaining metal-polymer composite materials // 2571762
FIELD: chemistry.SUBSTANCE: invention relates to two-phase polymer mixture, containing (a) polyamide, which has melting point not higher than 210°C, (b) polyolefin, modified by grafting carboxyl groups, with rheological properties of mixture in melted condition, being characterised by presence of flowability limit, as well as to method for its obtaining. Invention also relates to application of said polymer mixture for manufacturing composite constructions and envelopes, as well as to composite constructions and enveloped obtained by said method.EFFECT: improvement of connection properties.25 cl, 9 dwg, 2 tbl

ethod for modification of petroleum polymer resins // 2568116
FIELD: chemistry.SUBSTANCE: composition for production of targets-plates for trap shooting consists of : (1) petroleum polymer resin or mixture of petroleum polymer resins 17-19 wt %, (2) petroleum bitumen of one type or mixture with softening temperature from 90 to 135°C 1-3 wt %, (3) inorganic powder-like filler 80 wt % and (4) ether plasticiser 1 wt % of the sum of components (1)-(3). Also claimed is method for modification of petroleum polymer resins.EFFECT: production of ecologically pure targets-plates for trap shooting which do not contain carcinogenic admixtures, mixture for obtaining targets-plates is technologically effective, easy to mould with low adherence to the surface of hot pressing apparatus.2 cl, 2 tbl, 12 ex

Garcinol and cyclodextrin complex and method of its application // 2566065
FIELD: medicine, pharmaceutics.SUBSTANCE: invention relates to garcinol and cyclodextrin complex, applied for regulation and treatment of cardiac dysfunction conditions. Said complex includes garcinol and cyclodextrin in molar ratio from 1:1 to 1:4.5. Invention also relates to method of obtaining said complex, compositions, which contain said complex, and method of regulation and treatment of cardiac dysfunction conditions, including introduction of pharmaceutically effective quantity of said complex.EFFECT: invention is characterised by high effectiveness and low toxicity in treatment of various conditions of cardiac dysfunction.23 cl, 3 dwg, 20 tbl, 14 ex

Composition having impregnating effect // 2565204
FIELD: chemistry.SUBSTANCE: invention relates to a composition having impregnating effect, which can be used as an impregnating agent and/or an agent for top surfaces of different materials in different forms of application. An impregnating agent contains (A) at least one known impregnating active substance from a group consisting of (A1) fluorocarbon resins and (A2) fluorinated siloxanes and (B) at least one cationic polymer selected from chitosan, a chitosan derivative or other biopolymer, preferably from polyamides, particularly polypeptides, in most cases, essential amino acids (lysine, arginine, histidine, citrulline as well as in a combination), or from an amino-functionalised (meth)acrylate copolymer, particularly amino-functionalised styrene-acrylate copolymer or aliphatic and aromatic amino-functionalised polyurethane of a polyester and polycarbonate type.EFFECT: agent has good oil- and dirt-repellent effect.16 cl, 19 dwg
 
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