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Sealing mastic contains, wt %: chlorobutyl rubber - 3.6-4.2, ether of glycerol tall oil rosin - 1.0-1.5, high pressure polyethylene in the form of a film - 0.3-0.4, zinc borate - 4.0-4.6, magnesium hydroxide - 6.0-7.0, aluminium hydroxide - 22.0-12.0, trichloropropylphosphate - 2.5-3.0, a barite concentrate - 48.0-51.0, chloroparaffin CP-470 - 1.8-2.0, PN-6sh oil - 7.0-8.0. |
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Rubber mix for producing composite materials Invention refers to chemical engineering, particularly to producing rubber mixes of siloxane rubbers, and can be used for manufacturing electrical insulating tubes and insulated cable sheaths, polymer HV line insulators, fabricated rubber products and materials contacting petrols, organic solvents and mineral oils. The rubber mix contains a mixture of high-molecular dimethylvinyl siloxane rubber produced by polymerisation in the presence of an alkaline catalyst, and dimethyl siloxane rubber in a ratio of 50:50, aerosil, powdered quartz filler with the particle size of 1-5 mcm, potassium ferricyanide and Peroximone F-40 peroxide vulcanisate. |
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Composite material for producing composite materials Composite material is obtained from a rubber mixture containing, as a base, a mixture of dimethylvinylsiloxane rubber and dimethylsiloxane rubber in ratio of 50:50, which includes aerosil, powdered quartz filler with particle size of 1-5 mcm, potassium ferricyanide and a peroxide vulcanising agent - peroxymon F-40 at defined ratios. |
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Invention relates to oxygen-accepting mixture, composition, which contains polymer resin and said oxygen-accepting mixture, and to application of said oxygen-accepting mixture in package for food products. Oxygen-accepting mixture contains components (I) nanosized oxidised metal component, in which average size of metal particles constitutes from 1 to 1000 nm and where metal does not have substrate or is applied on substrate, (II) electrolytic component and (III) non-electrolytic oxidising component. |
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Insulation composition and method for production thereof Insulation composition contains bitumen, an absorbent, an oxidant and additionally liquid polysiloxane. The oxidant used is saturated iron (III) sulphate solution or concentrated sulphuric acid and/or orthophosphoric acid and/or nitric acid. Content of the components is as follows, wt %: bitumen - 77-75; absorbent - 2-15; liquid polysiloxane - 0.001-0.01; oxidant - the balance. The method of producing the composition involves mixing bitumen and the absorbent while heating to obtain a homogeneous mixture, sprinkling the oxidant, further heating and holding at a temperature required for stabilisation. Before sprinkling the oxidant, liquid polysiloxane is added while mixing bitumen and the absorbent, and sprinkling begins at temperature of 130°C. |
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Invention relates to the rubber industry, particularly to production of rubber mixtures based on general purpose rubber and can be used in making industrial rubber articles. The rubber mixture contains the following in pts.wt per 100 pts.wt isoprene rubber: sulphur - 1.0-1.5, zinc oxide - 3-5, stearine - 1.0-1.5, soot - 30, wollastonite which is modified with alkylbenzyl dimethyl ammonium chloride - 2-4. The rubber mixture can additionally contain vulcanisation accelerator altax - 0.6 pts.wt or altax - 0.6 pts.wt and diphenyl guanidine 3 pts.wt. |
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Method of producing foam plastic Invention relates to the technology of producing foam plastic based on urea formaldehyde resin and can be used for heat shielding and sound insulation of garret floors, roofs and walls in building. The method includes a step of foaming aqueous solution of urea formaldehyde resin in the presence of a surfactant, subsequent addition into the foamed resin solution of filler - gypsum and an acidic curing agent, mixing the mixture to a homogeneous mass and subsequent solidification of the mixture. Before adding to the foamed resin solution, the gypsum is mixed with aqueous solution of urea formaldehyde resin in ratio of 0.5-1.0:1.0. |
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Novel zinc-containing calcium-aluminium double salts Invention relates to chemistry. A neutral calcium-aluminium double salt has the formula Ca2m(Zn2n)Al2(OH)6+2(2m+2n-i)An * oH2O, where m and n assume the following values: m=0.5-3 and 0.5m≥n>0; An=CO3, where that group can be substituted completely or partially with at least one of the following groups selected from OH, ClO4, and o=0-3. This salt is obtained by reaction at step a) CaO or Ca(OH)2, ZnO or Zn(OH)a and Al(OH)3 in an aqueous suspension and adding CO2 or carbonate or bicarbonate of an alkali metal at temperature from 10 to 100°C. Reaction of the product obtained at step (a) with perchloric acid is possible. Double salts on which alkali metal perchlorates are deposited in liquid form are used as adsorbates. The double salts are used as additives for polyolefins as antipyrenes/smoke suppressors or filler material and for immobilising enzymes. |
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Stabilising system for halogenated polymers Invention relates to a stabilising system for halogen-containing polymers, as well as a composition and article made from the composition which contains the stabilising system. The stabilising system for halogen-containing polymers contains component (A) in form of a calcium monocarbonate hydroxodialuminate of formula (A) CamAl2(OH)6+2(m-1)CO3*nH2O (A), where m varies from 3.8 to 4.2 and n varies from 0 to 3, and component (B) in form of catena-2,2',2"-nitrile trisethanol perchlorate lithium or sodium coordination polymer (B1), having a monomer link of formula , where Mt denotes Li or Na, An denotes OCIO3, q equals 1, and can additionally contain perchlorate of quaternary or tertiary ammonium or phosphonium (B2). |
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Composition and method of producing porous pvfm-based filter Invention relates to filters intended for separation of inhomogeneous systems, in particular, to fabrication of filtration PVFM-based materials to be used in cleaning fluids and gases of water, mechanical impurities and biological contaminants. Composition for filter fabrication includes the following components, in wt %: polyvinyl alcohol - 5-20, porophore - 2-10, paraformaldehyde cross-linking agent - 2-15, catalyst - 1-15, water making the rest. Porophore mat represent a mix of starches with average grain size, or mix of starch with dextrin. Preset amount of polyvinyl alcohol is diluted in water. It is heated to 75-95°C with continuous mixing. Porophore suspension in cold water is added to obtained solution and kept at 55-80°C for 15-30 min with continuous mixing. Preset amount of cross-linking agent is added thereto and mixed for 10-30 min. Preset amount of catalyst is added thereto at 30-40°C and mixed for 10-20 min. Obtained reaction mix is poured in the mould, kept in temperature controlled cabint at 55-80°C for 5-20 h. Produced element is withdrawn from said mould, washed of catalyst and porophore. Drying is carried out at 15-25°C and, then, at 30-50°C to constant weight. |
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Curable rubber mixture contains natural or synthetic rubber, vulcanising substances, vulcanisation accelerators and activators, filler materials and other additives, as well as 0.5-2.0 pts.wt per 100 pts.wt composite antiageing agent rubber consisting of a powdered carrier - colloidal silica and a liquid alloy of antiageing agents obtained at 70-90°C, containing the following in pts.wt: 50-55 N-isopropyl-N-phenyl-n-phenylenediamine, 20-22 ε-caprolactam, 5-6 stearic acid, 20-22 boric acid in form of a melt obtained beforehand in ε-caprolactam at temperature 110-115°C. The alloy and the powdered carrier are in the following ratio in pts.wt: alloy of antiageing agents 55-60, colloidal silica 40-45. |
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The invention relates to polymer friction compositions and can be used in car industry and materials-handling vehicles. The polymer friction composition contains, mass.%: isoprene synthetic rubber SKI-3 - 5,53, polybutadiene rubber SKD - 5,53, industrial oil I-20 - 1,94, wollastonite - 52,9, barium oxide - 23,6, sulphur - 3,5, graphite - 3, technical carbon - 1,7, thiuram - 1,5, zinc oxide - 0,5, captax - 0,3, modifying agent- polymethylene-n-triphenyl boric acid ester - 1-7 to the whole composition mass. |
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Rubber mixture contains the following in pts.wt: fluororubber SKF-26-100, calcined magnesia 5-6, calcium hydroxide 5-6, technical carbon T-900 20-22, barium sulphate 10-12, low-molecular weight polyethylene 1.0-1.1, dibutyl sebacate 1.0-1.1, diphenylol propane 1.6-1.7, octaethyl tetraamidophosphonium bromide 0.5-0.6, filler - magnetic powder Nd-Fe-B modified with 4.5-5.0% solution of γ-aminopropyl triethoxysilane in ethyl alcohol 50-500. |
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Rubber mixture based on fluorinated rubber Rubber mixture has the following composition in pts. wt: fluorinated rubber SKF-26 65-68, low-molecular weight fluorinated rubber SKF-26 ONM 32-35, magnesium oxide 9.5-10.0, barium sulphate 13.0-13.5, calcium fluoride 10, calcium hydroxide 0.12, resorcinol 0.55, triethylbenzylammonium chloride 0.3, technical carbon N660 0.4, carnauba wax 1.0, ethyl alcohol 0.8. |
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Rubber mixture contains the following in pts. wt: copolymer of vinylidene fluoride and hexafluoropropylene SKF-26 63-69, low-molecular weight copolymer SKF-26 ONM 31-37, barite 20-35, vulcafluoro F 1.5-3.0, magnesium oxide 3-6, calcium hydroxide 5-7, triethylbenzylammonium chloride 0.2-0.5, modifier of adhesion strength of vulcanised rubber to metal - cobalt salt of 2-sulfobenzoic acid 0.5-2.0. |
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Invention concerns chemical industry, particularly production of polymer materials and composites with enhanced operational properties, and can be applied in rubber production industry. Polymer composition includes butadiene rubber, non-oil-extended butadienestryrene rubber, isoprene rubber, zinc oxide, silicic acid, stearic acid, polymer sulfur, diphenylguanidine, tetramethylthiuramsulfide and fullerene-containing carbon black with 100 mcm dispersity in amount of 0.79-2.96 wt %. Fullerene-containing carbon black is obtained by electric arc synthesis at graphite electrode in purified helium environment. |
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Stabilising system for halogen-containing polymers Method of polyvinylchloride stabilisation involves adding thermostabilising amount of mix including at least A) 0.01 to 10 weight parts of one polyalkylene glycol selected out of group including tetraethylene glycol, tetraporopylene glycol and tetraglicerine, per 100 weight parts of polyvinylchloride, and B) 0.001 to 5 weight parts of at least one metal chloride per 100 weight parts of polyvinylchloride, to indicated polymer. Additionally the mix includes at least one more additive or stabiliser. Heat-resistant polymer composition includes polyvinylchloride and thermostabilising amount of mix: A) 0.01 to 10 weight parts of at least one polyalkylene glycol of the general formula per 100 weight parts of polyvinylchloride, where: R1 and R2 are independently selected out of group including hydrogen and alkyl; R3 and R4 are independently selected out of group including hydrogen and alkyl; n is 4; B) 0.01 to 5 weight parts of at least one metal chloride per 100 weight parts of polyvinylchloride. |
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Asbestos-free polymer friction composition Invention concerns asbestos-free polymer friction compositions and can be applied in production of brake shoes. Composition includes, wt %: linking agent out of high-molecular unsaturated hydrocarbon rubbers 19-24; mineral fillers of concentrated barite 18-25 and alumina 6-8; asbestos-free fibrous filler of kevlar pulp 1.5-3.0, arselon pulp 1.5-3.0, and wollastonite 2-5; carbon fillers of Carbon black 6.95-15.0, and graphite 24-30; curing group of sulphur 1-3, 2-mercaptobenzothiazol 0.5-0.9, and thiuram 0.03-0.15. |
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Invention is directed to preparation of rubber compounds based on general- and special-destination rubbers using naturally occurring wollastonite as filler and can be used in manufacture of technical-destination rubber goods, elastomeric compositions, polymeric rolled roofing and waterproof materials, and the like. Rubber compound is prepared by mixing general- or special-destination rubber, sulfur-containing vulcanization agent, extender: carbon black, zinc oxide, stearin. Functional additive is further added in the form of organosilane-modified wollastonite or wollastonite having needle structure with characteristic ratio from 10:1 to 20:1 and diameters of equivalent sphere D50=3-15 μm, D98=20-100 μm, D10=1-4 μm. Rubber compound may also contain 5 wt parts of paraffin-naphtene oil or 0.1 wt parts of stabilizer. |
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Polystyrene biocyde composition (options) Biocyde composition containing polystyrene and biocyde additive is characterized by further including stearic acid amide and in that said biocyde additive contains silver phosphate at following proportions of components: 99.85-99.20% polystyrene, 0.10-0.30% stearic acid amide, and 0.05-0.50% silver phosphate. Composition containing silver thiocyanate and silver stearate as biocyde additive are also described. |
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Claimed casting composition included (mass %): novolac phenol-formaldehyde resin 47-49.3; wood powder 28.4-29.5; urotropine 7.1-7.4; kaolin 3.2-3.4; burnt magnesia 0.7-0.9; nigrosine 1.4-1.5; talk 3.7-3.9; naphthalene 1.9-2; stearin 0.2-0.4; calcium stearate 0.4-0.6; polyethylene wax 0.5-0.7; phosphoric acid triphenyl ester 1-5. Composition of present invention has increased destructive torque stress and decreased viscosity coefficient at 120°C and shear velocity gradient of 15 l/s. |
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Invention relates to creation plasticized compositions based on suspension polyvinylchloride, which are used in manufacturing film materials, in particular polyvinylchloride insulation tape. Composition contains suspension polyvinylchloride, dioctyl phthalate plasticizer, lead(III) sulfate, calcium stearate lubricant, carbon black, mixture of chlorinated C10-C30-hydrocarbons with 40-50% Cl content as secondary plasticizer, and residue of vacuum distillation of cobalt-freed still residue obtained in rectification of propylene hydroformylation product with boiling range 300-310°C. |
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Cable plastic composition contains polyvinylchloride, dioctyl phthalate, lead(III) sulfate, calcium stearate, antimony trioxide, chalk, diphenylolpropane, and secondary plasticizer, in particular chloro-C14-C32-hydrocarbons with chlorination degree 24-55%, obtained through chlorination of ethylene oligomerization production waste. |
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Invention relates to polymeric composition self-lubricating materials designated for making friction unit articles working in absence of lubricant or its limiting under conditions of dust content and effect of transient loadings. Antifriction composition comprises polytetrafluoroethylene, graphite and crushed quartz with dispersity 40-60 mcm as a silicate-containing additive and, additionally, bronze powder and chalk and components are taken in the following ratio, wt.-%: crushed quartz, 0.4-0.8; graphite, 3-8; chalk, 5-12; bronze powder, 15-25, and polytetrafluoroethylene, the balance. Invention provides enhancing wear resistance and heat stability of antifriction composition and simplifying its preparing. |
Another patent 2547524.