Tire

FIELD: transportation.

SUBSTANCE: tire comprises an inner shell that consists of a rubber mix. Rubber mix for the inner shell comprises a rubber component and additives, the dynamic modulus E* (MPa) of elasticity of which and tangent tanδ of the angle of losses, measured at temperature of 70°C, initial deformation of 10% and dynamic deformation 2%, meet the formulas below (1)-(3), air impermeability ratio is not more than 12.00⋅10-14 cm3⋅cm/cm2⋅s⋅Pa and tensile strength (TS) (MPa) and tensile elongation (TE) (%), according to measurements in accordance with JIS K6251, meet the formulas below (4) and (5): Formula (1): E*/tanδ>17; Formula (2): 2.5<E*<5; Formula (3): tanδ>0.15; Formula (4): TE>450; Formula (5): TS⋅TE>10,000.

EFFECT: improved characteristics of driving stability, effective use of fuel and balance of physical properties, with preserved resistance of air permeability and durability.

8 cl, 1 tbl

 



 

Same patents:

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly to inner seal design and fabrication. Said inner seal comprises dynamically cured mix of elastomer and structural resin, said inner seal being shaped.

EFFECT: better sealing properties.

22 cl, 3 dwg, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to thermoplastic elastomeric compositions. A dynamically vulcanisable alloy includes: a) at least one elastomer containing isobutylene; b) at least one thermoplastic resin, c) an anhydride-functionalised oligomer, wherein before functionalisation, the oligomer has molecular weight in the range of 750-1250, and d) a plasticiser which is selected from a group which includes tertiary amines, secondary diamines and sulphonamides, wherein the anhydride-functionalised oligomer and plasticiser are present in a ratio of 0.15-3.0, the elastomer is present in a dispersed phase in the form of fine vulcanised or partially vulcanised particles in the continuous phase of the thermoplastic resin.

EFFECT: alloy retains high Shore hardness A and acquires improved fluidity necessary for treatment.

12 cl, 4 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: 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: copolymer of conjugated diene compound and non-conjugated olefin includes block-copolymer, with peak area in range 70-110°C, constituting, at least, 60% of peak area in range 40-140°C, and with peak area in range 110-140°C, constituting 20% or less of peak area in range 40-140°C, where areas of peaks are measured by method of differential scanning calorimetry (DSC) in accordance with JIS K 7121-1987. Also claimed are copolymer-including rubber mixture, cross-linked rubber mixture and tyre.

EFFECT: copolymers possess high fatigue strength, low heat release and sufficient relative elongation at break.

16 cl, 2 tbl, 6 dwg, 8 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a rubber mixture and a tyre. The rubber mixture includes sulphur, a crosslinking activator, 20-100 w.p. of carbon black mixed with 100 w.p. of a rubber component. The carbon black has CTAB surface area of 60-105 m2/g, oil absorption 24M4DBP 70-105 cm3/100 g, N2SA/IA 0.88-0.95, and satisfies the formula: TINT(%)+0.4×oil absorption 24M4DBP(cm3/100 g)-0.5×CTAB surface area (m2/g) > 106 (1).

EFFECT: invention improves tyre wear resistance, rolling resistance, manufacturability and spalling resistance.

4 cl, 1 dwg, 5 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: invention relates to a rubber mixture for tyres and a pneumatic tyre made using said mixture. The rubber mixture is obtained using a method which includes a step of mixing a rubber component, silicon dioxide, a silane binding agent and at least one component selected from a group consisting of oxyacid, itaconic acid and a salt thereof. The oxyacid, itaconic acid and salt thereof have average particle size of not more than 300 mcm. The rubber mixture is obtained by combining 5-150 pts.wt silicon dioxide per each 100 pts.wt rubber component and combining 0.1-20 pts.wt silane binding agent and 0.3-25 pts.wt oxyacid, itaconic acid and salt thereof per each 100 pts.wt silicon dioxide.

EFFECT: high rate of reaction of the silane binding agent and silicon dioxide, fuel saving and resistance to abrasive wear.

15 cl, 6 tbl, 111 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a rubber composition, which can be used, in particular, in tyres based on at least one diene elastomer, one reinforcing filler, one cross-linking system, one phenolic resin and one polyaldehyde, where the phenol resin fraction ranges between 2 and 15 phr, and the polyaldehyde fraction ranges between 1 and 20 phr. The use of polyaldehyde makes it possible to advantageously replace conventional methylene donors while preventing the production of formaldehyde during the vulcanization of the rubber compositions and thus to limit the environmental impact of these compounds.

EFFECT: polyaldehyde compounds make it possible not only to obtain the rubber compositions exhibiting the same low-strain stiffness as the conventional rubber compositions using conventional methylene donors but also, to greatly improve the fatigue strength of the rubber compositions and thus the endurance of the tyres.

12 cl, 2 tbl

FIELD: tire industry.

SUBSTANCE: pneumatic tire tread includes cross-linking rubber mix containing at least one elastomer copolymer of styrene and butadiene in emulsion and reinforcing material including prevailing white filler present in rubber mix in amount equal to or higher than 40 pce. Copolymer includes emulsifier in amount changing from 1 to 3.5 pce (mass parts per 100 parts of elastomer).

EFFECT: increased wear resistance of tire tread.

11 cl, 4 dwg

FIELD: tire industry.

SUBSTANCE: pneumatic tire tread includes cross-linking rubber mix containing at least one elastomer copolymer of styrene and butadiene in emulsion and reinforcing material including prevailing gas soot in mix in amount equal to or higher than 55 pce. Copolymer includes emulsifier in amount changing from 1 to 3.5 pce (mass parts per 100 parts of elastomer).

EFFECT: improved wear resistance of tire tread.

10 cl, 4 tbl

Tire // 2279988

FIELD: rubber industry; tires.

SUBSTANCE: invention relates to pneumatic tire designed for running on ice. Proposed tire has layer of foam rubber of surface in contact with road pavement, expansion ratio of foam rubber layer being 3-50%. To form layer of foam rubber, rubber mix is used containing natural caoutchouc and polybutadiene caoutchouc as rubber component, carbon soot, silicon dioxide, organic fibers (a) free from microparticles and organic fibers (b) containing microparticles, ratio of mixing of organic fibers (a) free from microparticles with organic fibers (b) containing microparticles being within 98/2-2/98.

EFFECT: provision of perfect running on ice (braking and adhesion characteristics on plane), convenience and ease of manufacture of tire.

9 cl, 12 ex, 2 tbl, 4 dwg

FIELD: chemical industry; rubber industry; production of the rubber composition for reinforcement of the air tire ridge.

SUBSTANCE: the invention is pertaining to the air tire intended to bear the serious loadings and having the air tire ridge reinforcement containing the rubber composition having the smaller hysteresis. The rubber composition incorporates the die block manufactured out of the elastomer containing the india rubber or the synthetic polyisoprene rubber as the basic material and the intensifying filler containing the gas black. This composition is a such, that the made indicated gas black simultaneously fits to the following requirements: (i) 45 ≤ the specific surface area CTAB expressed in m2/g, (according to the standard ASTM D3765-80) ≤70, (ii)(45 ≤ the specific surface area BET expressed in m2/g (according to the standard ASTM D4820-93) ≤70, (iii) 45 ≤ the factor of iodine absorption IA expressed in mg/g, ((according to the standard ASTM D1510-81) ≤70, (iv) the ratio (the specific surface area BET /IA factor) ≤ 1.07, (v) 115 < the structural number DBP expressed in ml/100g (according to the standard ASTM D2414-93) ≤ 170, (vi) 85 nanometers ≤ the diameter of Stokes dst, expressed in nanometers, ≤145, where dst represents the diameter of the aggregates corresponding to the maximum frequency of the present Stokes diameters in distribution of the aggregates, and (vii) D50/dst ≥ 0.0090. CTAB+0.19, where D50 represents the difference in distribution of the aggregates between Stokes diameters of two aggregates corresponding to the same frequency making 50 % of the maximum frequency of Stokes diameters. At that, the values of dst and D50 are metered by means of centrifugal photosedimentometry. The composition also contains other components routinely used in production of the air tires. The invention allows to increase the air tire service life due to improvement of the air tire mechanical resistance and decrease of itsd reinforcement ridge composition hysteresis.

EFFECT: the invention ensures the increased air tire service life due to the improved air tire mechanical resistance and the decreased its reinforcement ridge composition hysteresis.

13 cl, 3 tbl

FIELD: rubber industry; other industries; compositions for production of the treads of the pneumatic tires and the methods of the compositions production.

SUBSTANCE: the invention is pertaining to the cross-linkable or cross-linked rubber composition characterized by the diminished hysteresis properties in the cross-linked state and by the improved manufacturability in the non-cross-linked state, to the method of its production, to the tread of the pneumatic tire and to the pneumatic tire. The composition contains the reinforcing filler consisting of the reinforcing inorganic filler, and, at least, one diene elastomer. The diene elastomer is produced in the form of the emulsion or the solution. The elastomer produced in the form of the solution has the molar contents of the conjugated dienes links exceeding 30 % and is produced at the following stages. At the first stage the initial diene elastomer is subjected to the reaction of the hydroaluminization or carboaluminization along the chain in the inert hydrocarbon solvent by addition to it of the aluminum-containing agent. At the second stage the produced product is added with, at least, one electron-seeking reagent intended for interaction with the indicated aluminum-containing agent. At the third stage they stop the process of the reaction of the second stage and extract the elastomer containing the functional groups of the carboxylic acid along the chain. The reinforcing inorganic filler is selected from the group including the highly dispersive silica, argil, Al(OH)3. The method of production of the composition includes the first stage of the thermomechanical treatment of the above-indicated elastomer and the reinforcing inorganic filler at the maximal temperature from 130°С up to 200°С, and the second stage of the mechanical working at the temperature smaller than the temperature of realization of the first stage with introduction of the cross-linking system. The diene elastomer received in the emulsion contains the functional groups of the carboxylic acid along the chain and is produced using the emulsifying solution by the method of the copolymerization by the following way. To the indicated emulsifying solution of the monomer or the monomers of the conjugated diene (the conjugated dienes) possibly with one or the several vinyl aromatic compounds add the comonomer consisting of unsaturated aliphatic carboxylic acid taken from the group consisting of the acrylic acid, the methacrylic acid, the maleinic acid, the fumaric acid. The method of production of the above-indicated composition includes the first stage of the thermomechanical working of an above-stated elastomer and the reinforcing inorganic filler, except for the system of cross-linkage at the maximal temperature from 130°С up to 200°С, and the second stage of the mechanical working at the temperature smaller than the temperature of realization of the indicated first stage with addition of the cross-linkage system. In one of the versions of the method the composition includes two phases of the first stage: At the first phase of thermomechanical working they introduce completely the whole amount of the monoxide for activation of the subsequent cross-linkage and intermix all the components, at the second phase they introduce the antioxidant and admix with components of the first phase. In the other version at the first phase of the first stage they introduce zinc monoxide and magnesium monoxide. The invention allows to produce the composition with the improved hysteresis properties in the cross-linking state and the pneumatic tire containing the tread produced from the composition with the reduced resistance to the rolling movement.

EFFECT: the invention ensures production of the composition with the improved hysteresis properties in the cross-linking state and the pneumatic tire containing the tread produced from the composition with the reduced resistance to the rolling movement.

20 cl, 10 tbl, 9 ex

FIELD: tire industry.

SUBSTANCE: proposed tire contains skeleton structure with at least one skeleton layer of toroidal shape whose opposite side surfaces are coupled with corresponding right-hand left-hand bead wires. Each bead wire is fitted in corresponding bead. Breaker includes at least one breaker strip applied over periphery from outer side relative to said skeleton structure. Thread band applied over periphery on said breaker structure includes radially external layer designed for contacting with road, radially internal fitted between said radially external layer and said breaker structure. Radially internal layer includes elastomer composition with cross bonds containing at least one diene elastomer polymer, at least one laminated material with thickness of separate layer from 0.01 nm to 30 nm, preferably, from 0.05 nm to 15 nm. Method of manufacture of said tire is laid also in description of invention.

EFFECT: improved operating characteristics of type.

41 cl, 4 tbl, 4 ex, 2 dwg

FIELD: automotive industry.

SUBSTANCE: proposed tire includes at least one structural element containing elastomer material of cross-linked elastomer composition including 100 mass parts of at least one diene elastomer polymer; from 1 mass part to 500 mass parts, preferably, from 2 mass parts to 40 mass parts, and more preferably from 5 mass parts to 30 mass parts of at least one laminated material with thickness of separate layer from 0.01 nm to 30 nm, preferably, from 0.05 nm to 15 nm; from 0.1 mass part to 15 mass parts, preferably from 0.3 mass part to 10 mass parts of at least one methylene donor compound; from 0.4 mass part to 20 mass parts, preferably, from 0.8 mass part to 15 mass parts of at least one methylene acceptor. At least one structural element should be preferably chosen from bead filler, side strip insert, subtread layer, underskid layer.

EFFECT: improved mechanical properties of tire.

73 cl, 2 tbl, 4 dwg

FIELD: transport engineering; tire industry; highly efficient tires.

SUBSTANCE: proposed tire for vehicle wheels includes carcass structure of toroidal shape whose opposite side edges are coupled by corresponding right-hand side and left-hand side bead wires to form corresponding beads; breaker structure applied in outer relative to radius position relative to said carcass structure: tread band radially applied to breaker structure; at least one layer of cross-linked elastomer material applied in inner relative to radius position relative to said tread band; pair of side strips applied from side to opposite sides relative to carcass structure; at least one layer of cross-linked elastomer material has following characteristics: dynamic modulus of elasticity E¹ measured at 70°C not lower than 20 MPa, preferably, from 25 MPa to 50 MPa; ratio between modulus of elasticity at extension at 100% elongation (MIOO) and modulus of elasticity at extension at 10% elongation (MIO) not lower than 1.5, preferably, from 2 to 5. One layer of cross-linked elastomer material is preferably laid between tread band and breaker structure. Invention provides better characteristics of tire during operation at high driving speed and/or extreme driving conditions - rigid steering, simultaneously with satisfactory behavior at normal driving conditions - soft steering.

EFFECT: improved service characteristics of tire.

50 cl, 4 ex, 5 tbl, 2 dwg

FIELD: transportation; chemistry.

SUBSTANCE: invention relates to to elastomer composition containing at least one halogenated butyl elastomer, at least one mineral filler and at least one compound containing silicon. Note that the composition contains a mix of at least one silazane compound as the silicon-containing compound and at least one agent containing at least one amino alcohols. The invention also relates to the method of making an elastomer product by mixing the components of the given elastomer composition with the subsequent vulcanisation of the mix formed, and to the tread or the car tyre insert from the elastomer product thus produced. This elastomer composition may be used in many industrial branches, including the production of treads and its side walls, tyre inserts, covering of various vessels, hoses, conveyor belts, rubber tubes etc.

EFFECT: improved mechanical properties of tyres, higher anti-abrasion properties and lower rolling friction.

13 cl, 10 tbl, 5 ex, 11 dwg

FIELD: chemistry.

SUBSTANCE: invention pertains to compositions of ternary copolymers on an isobutylene base and can be used in tyres, in particular in motor car components, such as protectors, inner lining of tyres, air bladders and tubes. The vulcanised elastomer composition contains halogenated ternary copolymer links from C4 to C8 derived from iso-olefin, links from C4 to C14 derived from multi-olefin and links derived from p-alkylstyrol. The composition is vulcanised in the presence of a sulphur vulcanising group. The value of adhesion to butadiene-styrene rubber of the vulcanising composition at 100°C is more than 70 N/mm. The composition also optionally contains filler and/or extra rubber. The suitable fillers are modified carbon black, carbon black, silicon dioxide, aluminium oxide, calcium carbonate, clay, mica, talc, titanium dioxide, starch, wood powder and their combination.

EFFECT: improved adhesion to the frame, elasticity with retention of impermeability to air.

52 cl, 1 dwg, 8 tbl

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