Rubber-based mixture and automotive tire

FIELD: chemistry.

SUBSTANCE: rubber-based mixture differs in that it contains at least the following components: from 5 to 100 phr of at least one polymer A of the following formula I): I) F-(P-Y-P-Sx)z-P-Y-P-F, where S is a sulfur atom, P is an elastomeric polymer chain obtained by the anionic polymerization of at least one diene with the conjugated double bonds, and optionally at least one vinylaromatic compound in the presence of two-functional initiator, Y is a dicarbanionic group obtained from the two-functional initiator, x independently is an integer for each group of Sx equal to or greater than 1, provided that at least for one of the group of Sx, x is selected from the numbers 2, 3, and 4, z is an integer from 1 to 160, each F independently is an end group selected from the group consisting of -H, -SH, -SOH, -SCl, -SSCl, -SO2H and -SO3H, and at least one filler.

EFFECT: improved rolling resistance, improved wear properties, elasticity.

12 cl, 1 tbl

 



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention relates to a modifier, a method of obtaining a modified polymer and the modified polymer of a conjugated diene. The modifier for the polymer of the conjugated diene is obtained as a result of the complete condensation for a silicon-containing compound, which has a protected primary amino group and hydrolysable groups. The method of obtaining the modified polymer based on the conjugated diene includes a stage of modification and stage of the protection withdrawal. The tage of the protection is carried out after the completion of modification, and the used polymer based on the conjugated diene is preferably such that 10% of its polymer chains possess live and pseudolive properties.

EFFECT: modified polymer based on the conjugated diene is characterised by an excellent ability of small heat release and resistance to abrasion, which is used in a caoutchouc composition for the pneumatic tread.

13 cl, 4 tbl, 23 ex

FIELD: chemistry.

SUBSTANCE: bitumen composition includes petroleum road bitumen BND 90/130, SKS-30ARKM-15 or SKS-30ARK rubber and polyethylene polyamine production wastes as an adhesive additive, with the following ratio of components, wt %: BND 90/130 bitumen - 83-93, SKS-30ARKM-15 rubber - 5-10 and polyethylene polyamine production wastes - 2-7 or BND 90/130 bitumen - 86-95, SKS-30ARK rubber - 3-7 and polyethylene polyamine production wastes - 2-7. The method of producing the bitumen composition is carried out by mixing bitumen while heating with a rubber-containing component and an adhesive additive, wherein the rubber is added in the form of 8-12% solution in an organic solvent, wherein the solvent used is hydrocarbons with final boiling point of no higher than 130°C. Preparation of the rubber solution in the solvent is carried out at 40-50°C while mixing for 5-6 hours. The obtained rubber solution and adhesive additive are then added to the bitumen. The mixture is homogenised for 3-4 hours while gradually raising temperature to 160-170°C. Further mixing is carried out until achieving 97% removal of the solvent. The remaining amount of solvent is removed by blowing with nitrogen.

EFFECT: obtaining a homogenous bitumen binder, having improved physical and mechanical properties.

4 cl, 2 tbl

FIELD: process engineering.

SUBSTANCE: invention relates to production of moulded articles containing polybutadiene and can be used in tire production as moulded strips for tire sidewalls or treads. Polybutadiene with content of cis-isomer over 95% and polydispersity lower than 2.5 is mixed with highly dispersed silicic acid and/or carbon black and with cross-linking agents, sulphur or sulphur donors, extra process additive and subjected to extrusion at 40-75°C.

EFFECT: higher quality of processing the mixes and quality of formed articles with lower rolling resistance and abrasion.

5 cl, 1 dwg, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to silane-containing caoutchouc mixtures with functionalised diene caoutchoucs and microgels, to method of their obtaining and application in automobile tyres. Caoutchouc mixture, containing caoutchouc, functionalised with hydroxyl, and/or carboxyl groups, and/or their salts, contains caoutchouc from repeating units based on 1,3-butadiene and styrene and silane of the given formula. Caoutchouc mixture can contain styrene-butadiene gel with index of swelling in toluene 1-25 and size particle from 5 to 1000 nm.

EFFECT: invention makes it possible to obtain resistant to wet sliding and possessing low rolling resistance - resistance in the process of steering of automobile tyre-treads with high wear-resistance.

9 cl, 4 tbl

FIELD: chemistry.

SUBSTANCE: method of producing conjugated diene rubber includes: (a) a step of reacting a first alkoxysilane compound whose molecule contains a group which can be converted to an onium ion by an onium ion generator, and an alkoxysilyl group which contains two alkoxy groups with a conjugated diene polymer which contains an active terminal atom of an alkali metal or an alkali-earth metal. The polymer is obtained by polymerising a conjugated diene compound and an aromatic vinyl compound to obtain a modified conjugated diene polymer which contains a group which can be converted to an onium ion, and an alkoxysilyl group, and (b) a step of mixing the obtained modified conjugated diene polymer with an onium ion generator and a second alkoxysilane compound whose molecule contains one alkoxysilyl group and one group which can be converted to an onium ion by an onium ion generator. The groups, which can be converted to an onium ion, in the first alkoxysilane and second alkoxysilane compounds are selected from a group of compounds.

EFFECT: reduced hysteresis loss and fuel efficiency in motor tyres.

7 cl, 4 tbl, 25 ex

FIELD: chemistry.

SUBSTANCE: anticorrosive coating composition contains DST-30-01 thermoplastic butadiene-styrene, an oligomer and a solvent, wherein the oligomer used is triethylene glycol dimethacrylate, the solvent used is toluene, and the composition further includes a photoinitiator - 2,2-dimethoxy-1,2-(diphenyl)ethanone.

EFFECT: faster preparation of the coating composition and direct formation of an anticorrosive coating.

2 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: rubber mixture based on butadiene-methyl styrene caoutchouc includes sulphur, diphenylguanidine, sulfene amide C, technical carbon, zinc oxide, stearic acid, as preservative and modifier of 2-(dimethylaminomethyl)-4-methyl-6-(1,7,7-trimethylbicyclo[2.2.1]hept-exo-2-yl)phenol 2-4 wt.p. per 100 wt.p. of caoutchouc.

EFFECT: invention makes it possible to increase confection adhesiveness with preservation of high stability to ageing of rubber mixture vulcanisate.

3 tbl, 1 ex

FIELD: chemistry.

SUBSTANCE: invention relates to petrochemical industry, particularly production of butadiene-styrene rubber obtained by emulsion copolymerisation, and methods for filling thereof at a latex step, and can be used in producing industrial rubber articles. The method of producing filled butadiene-styrene rubber involves emulsion copolymerisation of butadiene with styrene in the presence of radical initiators, stoppering the process, degassing, adding an antioxidant and fibre filler - cotton, viscose, capron fibre or a mixture thereof, separating rubber from latex by coagulation in the presence of a coagulation agent and 2% sulphuric acid solution, washing and drying rubber crumbs. The fibre filler is used at the coagulation step in the composition of a compound coagulation agent consisting of 5-30% aluminium chloride solution, added in amount of 2.0-3.0 kg/t rubber, and fibre filler added in amount of 1.0-10.0 kg/t rubber.

EFFECT: method increases process efficiency, intensifies the rubber drying process, reduces consumption of the coagulation agent, stabilises the process of separating rubber from latex and reduces environmental pollution with products of producing rubber by emulsion copolymerisation.

1 tbl, 10 ex

FIELD: chemistry.

SUBSTANCE: invention relates to the rubber industry and can be used in making industrial rubber articles. The butadiene-methylstyrene rubber based rubber mixture contains sulphur, diphenyl guanidine, a vulcanisation accelerator, technical carbon, zinc oxide, stearic acid, an anti-ageing agent and a modifier. The vulcanisation accelerator used is sulphenamide Ts, the anti-ageing agent and modifier are 2-(dibutylaminomethyl)-4-methyl-6-(1,7,7-trimethylbicyclo[2.2.1]hept-exo-2-yl)phenol.

EFFECT: high building tack while maintaining high ageing resistance of the butadiene-methylstyrene rubber based rubber mixture.

3 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to rubber industry and can be used in making wear-resistant rubber articles for construction purposes, operating in conditions of intense wear, low temperatures and aggressive media. The oil-and-petrol resistant rubber mixture contains butadiene-nitrile rubber BNKS-40AMN, isoprene rubber SKI-3, methyl styrene rubber SKMS-30 ARKM-15, sulphur, sulphenamide Ts, stearine, technical carbon P324, zinc oxide, regenerate RShT, thiuram D, kaolin, petroleum bitumen, naphtham-2, oil I-8A, N-nitrosodiphenylamine, and process additives - dispractol KS and a mixture of diphenyl carbonate and dimethyl carbonate resin DFK-1.

EFFECT: invention reduces the cost of the rubber mixture owing to use of cheaper process additives, and increases nominal tensile strength and breaking elongation, and reduces the abrasion index.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a rubber mixture for tyres and a studless tyre for a passenger vehicle. The rubber mixture for tyres includes a rubber component and finely ground silicon dioxide, where the rubber component contains modified natural rubber with phosphorus content of 200 ppm or less and butadiene rubber. The finely ground silicon dioxide has CTAB specific surface area of 180 to 600 m2/g and BET specific surface area of 185 to 600 m2/g. For 100 wt % of the rubber component, the amount of the modified natural rubber is 50 to 80 wt % and the amount of butadiene rubber is 20 to 50 wt %.

EFFECT: invention provides well balanced improvement of fuel saving, wear resistance and movement characteristics on an ice-covered and snow-covered road.

8 cl, 2 tbl, 7 ex, 1 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to rubber composition, in particular, for obtaining tyres or half-finished products for tyres. Rubber composition consists of at least diene elastomer, enhancing filler, cross-linking system, epoxy resin - from more than 1 to less than 20 phr and amine hardening agent - from more than 1 to less than 15 phr. Amine hardening agent is selected from the group, consisting of p-xilylenediamine, 1,3-bis(aminomethyl)cyclohexane, 1,8-diaminooctane, 3,3′-diaminobenzidine and their mixtures. Enhancing filler contains soot, silica or their mixture.

EFFECT: invention makes it possible to provide high rigidity with low deformation without noticeable impairment of hysteresis.

11 cl, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to highly molecular linear polybutadienes with a high content of cis-1,4-units. Claimed is a highly molecular linear neodymium-catalysed polybutadiene with a high part of cis-1,4-units, exceeding 95%, and a small part of 1,2-vinyl units (lower than 1%), as well as a low index of the molar mass distribution, which has the Mooney viscosity (ML1+4100°C) of 70-90 and the index of the molar mass distribution lower than 10, corresponding to the ratio of Mw(90%) by Mw(10%) division, with the molar mass distribution being characterised by indices Mw(90%)<1000000 g/mol and Mw(10%)>100000 g/mol. A method of obtaining the claimed polybutadienes, rubber mixtures, containing the claimed polybutadienes, and versions of their application are also claimed.

EFFECT: claimed polybutadiene possesses improved exploitation characteristics (gel-formation, elasticity, resilience, etc), making it possible to obtain high-quality tyres and golf balls.

24 cl, 1 tbl, 3 ex

FIELD: transport.

SUBSTANCE: invention relates to automotive industry particularly, to stud-less tires. Rubber mix comprises isoprene-based rubber, silicon dioxide, bis-(4-methyl benzothiazolyl-2)-disulphide and thiuram-based vulcanization promoter.

EFFECT: higher strength, longer life, higher fatigue strength, accelerated vulcanization.

4 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to formulation of a rubber mixture using surface-modified technical carbon and can be used in manufacturing tyres for passenger, cargo and racing cars. The composition of the tyre compound consists of surface-modified technical carbon and a functionalised polymer containing functional groups along the polymer chain. The functionalised polymer includes soluble butadiene-styrene rubber. The functional groups of the polymer include carboxyl or hydroxyl functional groups.

EFFECT: invention enables to obtain rubber with very low hysteresis and rolling resistance, improved adhesion with a wet road and excellent wear resistance.

21 cl, 11 dwg, 13 tbl

FIELD: chemistry.

SUBSTANCE: rubber mixture contains the following, wt %: SKI-3 rubber 67.60-68.80, stearic acid 1.30-1.40, zinc oxide 3.30-3.50, sulphur gas 1.50-1.60, sulphenamide T 0.40-0.50, technical carbon N330 23.60-24.10, modifier - N-alkyl-4-nitroso-3-methyl-5-(2-naphthyl)-pyrazole 0.30-2.10. The alkyl is methyl or propyl or isopropyl. The modifier is obtained via catalytic step-by-step condensation of functionalised 1,3-diketone, amine and ketone.

EFFECT: invention improves the polymer-filler reaction and processing characteristics of vulcanised rubber.

2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to the field of industrial rubber compositions, intended for obtaining a semiproduct for tyres. A reinforced rubber composition based on at least (a) an elastomer matrix, containing non-halogenated natural caoutchouc, (b) a reinforcing filling agent, (c) a special polyamine compound, present in an amount from more than 0 to less than 7 mmol per 100 g of an elastomer.

EFFECT: invention provides the improved hysteresis of the rubber composition properties.

15 cl, 10 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a rubber composition, which does not contain zinc or contains less than 0.5 wt.p. of zinc, which can be used for the production of tyres. The rubber composition contains one diene elastomer; one cross-linking sulphur-based system; one inorganic filling agent as a reinforcing filling agent; one blocked mercaptosilane of the general formula (HO)3-nR1n-Si-Z-S-C(=O)-A, where each of R1, which can be similar or different, represents a monovalent hydrocarbon group, selected from alkyls, linear or branched, cycloalkyls or aryls, containing from 1 to 18 carbon atoms; A represents hydrogen or a monovalent hydrocarbon group; selected from alkyls, linear or branched, cycloalkyls or aryls, containing 1-18 carbon atoms; Z represents a bivalent binding group, including 1-18 carbon atoms; n represents an integer number, equal to 0, 1 or 2.

EFFECT: invention makes it possible to reduce the composition toxicity with the preservation of resistance to untimely vulcanisation.

21 cl, 2 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a modifier, a method of obtaining a modified polymer and the modified polymer of a conjugated diene. The modifier for the polymer of the conjugated diene is obtained as a result of the complete condensation for a silicon-containing compound, which has a protected primary amino group and hydrolysable groups. The method of obtaining the modified polymer based on the conjugated diene includes a stage of modification and stage of the protection withdrawal. The tage of the protection is carried out after the completion of modification, and the used polymer based on the conjugated diene is preferably such that 10% of its polymer chains possess live and pseudolive properties.

EFFECT: modified polymer based on the conjugated diene is characterised by an excellent ability of small heat release and resistance to abrasion, which is used in a caoutchouc composition for the pneumatic tread.

13 cl, 4 tbl, 23 ex

FIELD: transport.

SUBSTANCE: set of invention relates to rubber composition and tire with tread area formed with the help of this rubber composition. This composition contains diene rubber, gas black and light filler as well as mother stock prepared by premixing of non-diene rubber and organic peroxide. Note here that total content of gas black and light filler makes 20-70 weight parts per 100 weight parts of diene rubber while the content of non-diene rubber in mother stock makes 3-30 weight parts per 100 weight parts of diene rubber.

EFFECT: higher wear resistance, better grip.

10 cl, 1 dwg, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to combined use in a composition of one or more elastomers, comprising an isoprene elastomer, of precipitated silicon dioxide which contains aluminium as a reinforcing inorganic filler and 3-acryloxy-propyltriethoxysilane as an agent for binding the inorganic filler with the elastomer. Content of aluminium in the precipitated silicon dioxide is higher than 0.5 wt %.

EFFECT: invention improves wear-resistance and the hysteresis factor, while maintaining high rheological, mechanical and dynamic properties of the composition.

24 cl, 14 tbl, 7 ex

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