Sulfur-, selenium-, or tellurium-containing compounds (C08K5/36)

Vulcanisable compositions based on nitrile rubbers containing epoxy groups // 2614384
FIELD: chemistry.SUBSTANCE: invention relates to chemical industry. Vulcanisable composition contains one epoxy group-containing hydrogenated nitrile rubber, which contains repeating units of one conjugated diene, one α,β-unsaturated nitrile and one or more additional copolymerisable of monomers; one Lewis base and/or Bronsted base as a cross-linking agent; one cross-linking accelerator. Lewis base and/or Bronsted base differ from compounds, which form a group of cross-linking accelerators.EFFECT: invention makes it possible to limit use of peroxide or sulphur-containing cross-linking agents in vulcanisable compositions, optimise residual compression deformation at high temperatures during prolonged stress.12 cl, 10 tbl
ixture of materials // 2613436
FIELD: construction.SUBSTANCE: invention relates to the sealing profile for doors and windows made of the mixture of materials including about %: ethylene-propylene-diene rubber 10-50, propylene copolymer with ethylene 8-50, the filler 50-70, paraffin oil 0-20, accelerator - sulfur donor 0.1-5, sulfur 0.5-5, zinc oxide 0.5-3. The method of producing the window or door structural element is also described which uses at least two sealing profiles of the mixture of materials containing ethylene-propylene-diene rubber and propylene copolymer with ethylene, wherein the mixture of materials is blended, shaped, and then cross-linked under the influence of temperature followed by retracting of the sealing profiles into the corresponding structural elements and by welding of the structural elements and the sealing profiles to each other in one pass.EFFECT: invention provides weldability of the sealing profile.13 cl

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

Sulphur-containing polymer with terminal halogen groups // 2574399
FIELD: chemistry.SUBSTANCE: invention relates to sulphur-containing polymer, which is applied as plasticiser, as well as to vulcanising composition. Sulphur polymer has terminal halogen groups and is presented by the following formula: X-(R-Sr)n-R-X, where R represents alkyl group, containing bond -O-CH2-O-, and has from 3 to 26 carbon atoms, X represents halogen atom, n stands for integer number from 1 to 200 and r has average value 1 or more and less than 2. Vulcanising composition contains said sulphur-containing polymer, polysulphide polymer and vulcanising agent.EFFECT: invention makes it possible to obtain sulphur-containing polymer with high plasticising ability and heat resistance, low temperature of vitrification.6 cl, 2 tbl, 11 ex
Polyamide resin composition and moulded piece // 2557626
FIELD: chemistry.SUBSTANCE: invention refers to a polyamide resin composition containing polyamide consisting of a diamine chain containing 70 mole % or more of a paraxylylene diamine chain, and a dicarboxylic acid chain containing 70 mole % or more of aliphatic dicarboxylic acid chain with 6-18 carbon atoms, as well as (B) an aromatic compound of a seconday amine and (C) a sulphur organic compound. The composition contains from 0.05 to 5 weight portions of the sulphur organic compound and from 0.05 to 5 weight portions of the aromatic compound of the secondary amine per 100 weight fractions of polyamide. What is also described is a moulded piece made of the composition.EFFECT: heat resistance, rigidity, high temperature applicability.9 cl, 1 tbl, 13 ex
Polyamide resin composition and moulded product // 2545341
FIELD: chemistry.SUBSTANCE: invention relates to a polyamide resin composition, intended for obtaining a moulded product. The polyamide resin composition contains: (A) a polyamide, containing a unit of dicarboxylic acid and a diamine unit, including not less than 30 wt % of an m-xylenediamine unit, (B) a compound based on an aromatic secondary amine and (C) a compound on an organosulphuric base, where the mixed amount of the compound of the organosulphuric base (C) constitutes from 0.2 to 5 wt.p. counted per 100 wt.p. of the polyamide, and the weight ratio (B)/(C) in the polyamide resin composition is in the range from 0.1 to 5.0. The composition is characterised by a coefficient of oxygen-permeability not higher than 1 cm3·mm/m2·day·atm, at 23°C and 75% relative humidity (RH). Also described is the moulded product such as a hose or a pipe.EFFECT: improved resistance to thermal ageing with the simultaneous preservation of permeability characteristics.21 cl, 1 tbl, 23 ex

Polyamide resin-based composition and moulded product // 2540661
FIELD: chemistry.SUBSTANCE: invention relates to composition based on polyamide resin for manufacturing moulded products. Composition contains polyamide, consisting of diamine units, containing units of 1,3-bis(aminomethyl)cyclohexane and units of dicarboxylic acid, including units of adipic and/or sebacic acid, (B) compounds of aromatic secondary amine, (C) organic sulphur-based compound and (D) phenolic oxidant. Weight ratio of components (B)/(C) in said composition constitutes from 0.5 to 10 and weigh ratio (D)/(C) in composition constitutes from 0.5 to 10. Polyamide resin-based composition is characterised by the fact that it has oxygen permeability coefficient not higher than 1.5 cubic cm·mm/m2.day·atm at temperature 23°C and relative humidity 75%. Moulded product, in particular hose or pipe is also described.EFFECT: increased resistance to thermal ageing with preservation of gas-barrier properties of polyamides and products manufactured from them.14 cl, 1 tbl, 16 ex

Rubber mixture for tyres with improved vulcanising agent // 2518600
FIELD: chemistry.SUBSTANCE: invention relates to rubber mixture for production of pneumatic tyres. Rubber mixture contains, at least, one vulcanising diene caoutchouc, 35-300 parts of, at least, one active filling agent, selected from soot, silicon dioxide, filling agents, based on silicon and metal oxides, from 0.1·10-3 to 42·10-3 moles per a hundred parts of vulcanising agent caoutchouc, which is cross-linked with functionality higher than 4, and from 0.1 to 20 parts of, at least, one vulcanisation accelerator. Vulcanising agent has sulphur-containing structure, including hydrocarbon and/or heterohydrocarbon, and/or siloxane group, with functionality higher than 4. Soot or silicon dioxide, or their combination constitutes, at least, 10 parts of active filling agents. Mixture also contains 0-250 parts of other additional additives. Said rubber mixture has glass-transition temperature Tg (E" max.) in accordance with DIN 53 513, at least -80°C and not higher than 0°C.EFFECT: tyres, manufactured with application of said mixture possess Shore A hardness in accordance with DIN 53 505 and ASTM D2240 not less than 40 ShA and not higher than 95 ShA with specified temperature range from -80°C to +80°C and specified compression of about 10+0,2% at 10 Hz.12 cl, 2 dwg, 6 tbl
Rubber mixture with improved abrasion // 2507222
FIELD: chemistry.SUBSTANCE: invention relates to a rubber mixture, particularly for vehicle tyres. The rubber mixture contains 30-100 pts.wt of at least one diene rubber per 100 pts.wt rubber, 20-200 pts.wt of at least one filler per 100 pts.wt rubber, 0-200 pts.wt, of additional additives per 100 pts.wt rubber, a sulphur-containing vulcanisation system which includes free sulphur, a sulphur donor and silane, with sulphur concentration due to said ingredients between 0.025 and 0.08 mol per 100 pts.wt rubber, of which elementary sulphur accounts for 0-70%, the sulphur donor accounts for 5-30% and the silane accounts for 20-95%, and 0.1-10 pts.wt of at least one vulcanisation accelerator per 100 pts.wt rubber.EFFECT: invention improves wearing characteristics of a vulcanised rubber mixture.22 cl, 11 tbl, 27 ex

Bituminous composition with thermoreversible properties // 2470049
FIELD: chemistry.SUBSTANCE: invention relates to a bituminous composition for use in the field of bitumen, road construction and industry. The bituminous composition comprises a larger portion of at least one bitumen and a smaller portion of at least one chemical additive. The additive is an organogelling agent which creates a network of hydrogen bonds between gelling molecules of the organogel which have molar mass less than or equal to 2000 g·mol-1. Said agent includes at least one hydrogen bond donor group D, at least one hydrogen bond acceptor group A and at least one compatibility enhancing group C which makes the organogelling agent compatible with bitumen chemical compounds. Said agent makes up at least 0.1 wt % of the total weight of bitumen. The invention also relates to a method of producing and using these bituminous compositions in road construction, particularly in producing road binding substances, as well as in industry.EFFECT: obtaining bitumens which are harder at application temperatures without increasing their viscosity in hot condition.37 cl, 2 dwg, 14 tbl, 7 ex

Foamed vinyl aromatic polymer composition and method of producing said composition // 2468044
FIELD: chemistry.SUBSTANCE: invention relates to the technology of producing granular foamed compositions based on vinyl aromatic compounds and can be used in making articles from foam plastic. The foamed composition contains a polymer matrix selected from a copolymer containing 90-99.995 wt % of at least one vinyl aromatic monomer and 0.005-10 wt % salt or C1-C4 alkyl ether of styrenesulphonic acid; or a polymer mixture containing 92-99.995 wt % vinyl aromatic (co)polymer and 0.005-8 wt % of a product selected from a salt or C1-C4 alkyl ether of styrenesulphonic acid and a copolymer of styrene and a salt or C1-C4 alkyl ether of styrenesulphonic acid; 1-10 wt % with respect to weight of the polymer matrix of the foamed additive selected from aliphatic or cycloaliphatic hydrocarbons containing 3-6 carbon atoms, or mixtures thereof, halogenated derivatives of aliphatic hydrocarbons containing 1-3 carbon atoms, and carbon dioxide. Foamed beads, foamed articles and methods of producing granular foamed compositions in an aqueous suspension or in a mass are also described.EFFECT: obtaining foamed granules having low density and low electrostatic charge.9 cl, 9 ex

Asphalt modifier composition and asphalt composition containing said modifier // 2459839
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing an asphalt modifier composition, involving: obtaining a triblock copolymer via block copolymerisation of a vinyl aromatic hydrocarbon and a diene compound with conjugated double bonds as a result of anionic polymerisation using an organic anionic initiator in a reactor, having a hydrocarbon solvent, where the step of producing the block copolymer involves: formation of a vinyl aromatic block by feeding a vinyl aromatic hydrocarbon into a reactor, having a hydrocarbon solvent, and then feeding an organic anionic initiator; forming a diene block with conjugated double bonds, bonded to the end of the vinyl aromatic block, by feeding a diene compound with conjugated double bonds into the reactor; feeding a functional additive, selected from a group consisting of compounds of formula 1, into the reactor; and obtaining an asphalt modifier composition, including a block copolymer and a functional additive, by removing a hydrocarbon solvent, Formula 1 ; in formula 1, the sum n+m-m' is equal to 35, n is an integer from 1 to 5, each of m and m' is an integer equal to at least 1, and X is an ester group [-C(=O)O-]. The invention also relates to a method of producing the asphalt modifier composition and asphalt composition.EFFECT: asphalt modifier composition dissolves fast in asphalt without significantly reducing softening temperature of asphalt, which enables to obtain a homogeneous asphalt composition and increase effectiveness of the asphalt composition.17 cl, 1 tbl, 4 ex

Pyrimidine derivatives as hardness stabilizing agents // 2265626
FIELD: organic chemistry, rubber industry.SUBSTANCE: invention relates to a vulcanizing composition comprising rubber vulcanized with sulfur, sulfuric vulcanizing agent, accelerating agent taken among a group comprising of non-thiazolsulfenamide accelerating agents and agent providing stabilization of hardness that comprises derivative of pyrimidine of the formula (I): wherein X represents hydrogen atom (H), radical from R1 to R4, NR3R4, OR5, SR5, SO2R6, M, (SO3)zM (wherein M represents metal ion); n and z can be similar or different and = 1, 2 or 3 depending on the corresponding valence of X and M = 1, 2 or 3; radicals from R1 to R4 are similar or different and taken among the group comprising of H, halogen atom, -OH, -NH2, alkyl, cycloalkyl, aryl, alkylaryl, alkylaryl, aralkyl and each among substitutes has optionally additional functional groups taken among the group consisting of -NH2, -OH, substituted amino-group, substituted hydroxyl, halogen atom and carbonyl-containing group; R3 and R4 in the same link in common with nitrogen atom (N) can form a heterocyclic group; R5 can mean any radical from R1 to R4 formed by carbon-base heterocyclic group comprising at least one sulfur (S) or nitrogen (N) atom or both S and N; R6 is taken among any radical from R1 to R4, -OH, -OM, -OR5, -NH2, NR3R4. The corresponding amount of accelerating agent and hardness stabilizing agent is effective in order to not inhibit vulcanization and to stabilize hardness property of indicated rubber after vulcanization. The amount of accelerating agent in indicated composition is above about 0.6 part per 100 parts of rubber when indicated rubber represents butadiene styrene rubber (SBR), and at least 0.5 part per 100 parts of rubber when indicated rubber represents the natural rubber, and the amount of the hardness stabilizing agent is at least about 0.5 part per 100 parts of rubber. Also, invention involves a method for enhancing hardness stabilization of the composition comprising rubber vulcanized with sulfur by addition of above indicated accelerating agents and pyrimidine derivative to the composition.EFFECT: valuable properties of compounds.28 cl, 8 tbl, 4 ex

The rubber mixture based on the combined nonpolar rubbers // 2228342
The invention relates to the rubber industry

The composition for a bulkhead of a thin display panel // 2213748
The invention relates to the composition for a bulkhead of a thin display panel, representing a group of monitors for display, such as a panel plasma and LCD indicators
 
2551039.
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