The present invention further improves the wear resistance and late-stage grip performance of a tire. The present invention is a tire, provided with a tread section, wherein: in a land section on a surface of the tread section, a groove is formed that comprises an opening section facing the surface of the tread section and a groove base section, and that has a width of 2 mm or less and a depth of 20 mm or less; the opening section and the groove base section intersect in plan view of the surface of the tread section; the proportion X of the area of the intersecting section of the opening section and the groove base section to the area of the opening section in plan view of the surface of the tread section is 95% or less; the tread section is formed from a rubber composition that includes a rubber constituent and carbon black, the carbon black content (by mass) Y being at least 20 parts by mass relative to 100 parts by mass of the rubber constituent; and X / Y < 4.
The present invention further improves later stage grip performance in a tire. This tire comprises a tread section. Formed in a land section of the surface of the tread section is a groove that has an opening section opening in the surface of the tread section, and a groove bottom section, and has a width of 2 mm or less and a depth of 20 mm or less. The opening section and the groove bottom section intersect when the surface of the tread section is viewed in plan view, and the ratio X of the area of the intersecting section of the opening section and the groove bottom section to the area of the opening section when the surface of the tread section is viewed in plan view is 95% or less. The tread section is formed from a rubber composition that includes a rubber component, silica, and carbon black, the ratio Y of the silica content (parts by mass) to the carbon black content (parts by mass) being greater than 50%. Furthermore, X/Y<1.5.
[Problem] To provide a golf club head fitting device and the like that can easily specify an index related to a specification for a golf club head that is suited to the swing of each player. [Solution] A golf club head fitting device 200 includes an acquisition unit 201 that acquires measurement data obtained as a result of a measurement apparatus measuring the swing of a golf club by a player, a calculation unit 202 that calculates a swing index on the basis of the measurement data, and a selection unit 203 that selects at least one club head index related to a specification for a golf club head that is suited to the player on the basis of the swing index.
A63B 60/46 - Measurement devices associated with golf clubs, bats, rackets or the like for measuring physical parameters relating to sporting activity, e.g. baseball bats with impact indicators or bracelets for measuring the golf swing
A63B 69/36 - Training appliances or apparatus for special sports for golf
This racket string includes a filament. The filament contains a polymer matrix and carbon nanotubes that are dispersed in the polymer matrix. The polymer matrix is composed of one kind of thermoplastic polymer, or two or more kinds of thermoplastic polymers having compatibility. A racket includes the racket string. A method for producing the racket string includes: a step for mixing and dispersing carbon nanotubes in a first thermoplastic polymer; a step for obtaining a thermoplastic composition by mixing a first thermoplastic polymer, in which the carbon nanotubes are dispersed, and a second thermoplastic polymer having compatibility with the first thermoplastic polymer; and a step for obtaining a filament by melt-spinning the thermoplastic composition.
H01M 4/60 - Selection of substances as active materials, active masses, active liquids of organic compounds
H01M 4/137 - Electrodes based on electro-active polymers
H01M 4/1397 - Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
6.
ELECTRODE ACTIVE MATERIAL, ELECTRODE, AND LITHIUM ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME
With the purpose of improving a capacity retention rate and charge/discharge capacity for an active material comprised in an electrode of a lithium ion secondary battery, this invention provides an electrode active material made up of particles containing an organic sulfur compound and carbon material.
H01M 4/137 - Electrodes based on electro-active polymers
H01M 4/1397 - Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
7.
ELECTRODE ACTIVE MATERIAL, ELECTRODE, AND LITHIUM ION SECONDARY BATTERY
The purpose of the present invention is to improve the charge/discharge capacity and capacity retention rate of an active material constituting an electrode of a lithium ion secondary battery. Provided is an electrode active material comprising particles that include an organosulfur compound and a metal compound including at least one metal selected from the group consisting of iron, molybdenum, vanadium, and titanium, wherein: the powder resistivity of the particles is less than 1.0×103SPSPSPP ≥ 0.05
B60C 11/00 - Tyre tread bandsTread patternsAnti-skid inserts
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
Provided are a golf club head fitting device, etc., capable of easily specifying a golf club head suitable for each swing motion of a player. A golf club head fitting device 200 includes an acquisition unit 201 that acquires measurement data obtained by measuring a swing motion of a golf club by a player through use of a measurement instrument, a calculation unit 202 that calculates a swing index on the basis of measurement data, and a selection unit 203 that selects at least one golf club head suitable for the player from among a plurality of candidate golf club heads on the basis of the swing index.
WABWEVSATDRYSATDRYDRY, which is a loss tangent in a dry state at 30°C, is 1.05 or more. The purpose of the present invention is to improve grip performance under a condition in which a dry state and a wet state alternate.
C08L 101/14 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity the macromolecular compounds being water soluble or water swellable, e.g. aqueous gels
The present invention provides a rubber composition and a tire with which it is possible to improve wet grip performance. The present invention is a rubber composition containing a rubber component A and vulcanized rubber particles. Domains composed of the vulcanized rubber particles are present in a matrix composed of the rubber component A, the average diameter of the domains is 50 μm or more, and the following formulas are satisfied. Hardness of domains when dry (kgf/mm2)/hardness of matrix when dry (kgf/mm2) ≥ 1.1 Hardness of domains when wet by water (kgf/mm2)/hardness of matrix when wet by water (kgf/mm2) ≤ 0.98
The present invention provides: vulcanized rubber particles with which it is possible to continuously exhibit good wet grip performance; a rubber composition; and a tire. The present invention is vulcanized rubber particles containing a rubber component A, silica, and a polyacrylic acid resin, the rubber component A containing a diene rubber having a polar functional group.
C08L 33/00 - Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereofCompositions of derivatives of such polymers
The present invention is a puncture repair kit 1 for repairing a puncture of an object. The puncture repair kit 1 includes: a container 5 in which a puncture repair liquid R is housed; a compressed air source 3 for supplying compressed air A; a mixing device 4 that is attached to the container 5, and generates a mixture of the puncture repair liquid R and the compressed air A; a first connection tool 12 that connects the compressed air source 3 and the mixing device 4; and a second connection tool 13 that connects the mixing device 4 and a valve of the punctured object. An emission angle θ for discharging the mixture, which is neither aerosolized nor foamed, from the valve to the inside of the object is 20° or more.
B29C 73/02 - Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass using liquid or paste-like material
The present invention provides a puncture repair kit 1 for repairing a puncture in an object. The puncture repair kit 1 comprises a vessel 5 which contains a puncture repair fluid R, a compressed-air source 3 for supplying compressed air A, a mixing device 4 for producing a mixture of the puncture repair fluid R and the compressed air A, the mixing device being affixed to the vessel 5, a first connector 12 which connects the compressed-air source 3 to the mixing device 4, and a second connector 13 which connects the mixing device to the valve of a punctured object. A discharge angle at which the mixture not in an aerosol state is ejected from the valve to the inside of the object is 20° or greater.
B29C 73/02 - Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass using liquid or paste-like material
This tire assembly comprises: a tire that is to be mounted on a vehicle; a first power generator unit; and a second power generator unit different from the first power generator unit. The first power generator unit has a power generator disposed on the inner surface of the tire, and a pressing member that is fixed on the inner surface of the tire at both sides of the power generator so as to stride over the power generator in the circumferential direction of the tire and that is deformable in response to deformation of the tire. The second power generator unit has a power generator fixed on the inner surface of the tire, and a weight member that overlaps the power generator from a side opposite to the inner surface across the power generator.
A road surface condition determination system (100) comprises: a first acquisition processing unit (71) that acquires weather information of a first region including a first road which is among a plurality of predetermined roads; a second acquisition processing unit (72) that acquires structure information of the first road; and a determination processing unit (75) that determines the road surface condition of the first road on the basis of the first region weather information acquired by the first acquisition processing unit (71) and the first road structure information acquired by the second acquisition processing unit (72).
The present invention provides a packaged body in which a rubber product for medical use is hermetically packed, the packaging body comprising an oxygen-impermeable packaging material and having a first space part containing the rubber product for medical use and a second space part containing an oxygen detecting agent having a color hue that changes in accordance with an oxygen concentration, the first space part and the second space part being separated from each other by means of an oxygen-permeable partition. The oxygen concentration in the packaged body containing the rubber product for medical use can be confirmed visually, and the oxygen in the packaged body can be maintained at a predetermined concentration or lower, facilitating quality assurance by means of sterilization treatment.
B65D 81/20 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
A61J 1/14 - Containers specially adapted for medical or pharmaceutical purposes DetailsAccessories therefor
A61J 1/18 - Arrangements for indicating condition of container contents, e.g. sterile condition
B65B 55/02 - Sterilising, e.g. of complete packages
B65B 55/08 - Sterilising wrappers or receptacles prior to, or during, packaging by irradiation
B65D 81/26 - Adaptations for preventing deterioration or decay of contentsApplications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, fluids, e.g. exuded by contentsApplications of corrosion inhibitors or desiccators
5050 of the active material is not less than 2 μm. The purpose of the present invention is to increase charge/discharge capacity while having a high basis weight.
H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulatorsProcesses of manufacture thereof
H01M 4/133 - Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M 4/136 - Electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
A tire replacement management system (100) comprises: an estimation processing unit (112) that estimates, on the basis of weather forecast information, a busy time for tire replacement work by a service provider that provides vehicle tire replacement services; a recommended time determination unit (114) that determines the recommended time at which a first tire mounted on a vehicle receiving a tire replacement service is replaced with a second tire different from the first tire to be a predetermined set period of time away from the busy time; and an output processing unit (115) that outputs the recommended time determined by the recommended time determination unit to a terminal device used by the manager of the vehicle.
G16Y 20/10 - Information sensed or collected by the things relating to the environment, e.g. temperatureInformation sensed or collected by the things relating to location
G16Y 20/20 - Information sensed or collected by the things relating to the thing itself
A tire management system (100A) comprises: a first identification processing unit (31A) that identifies a first vehicle (51) and a second vehicle (52); and a display processing unit (32A) that causes an operation display unit (12) to display a tire information arrangement screen (SC30) in which a part of tire icons (IM34) corresponding to a plurality of tires mounted to the first vehicle (51) are arranged on the left direction side, and a part of a plurality of the tire icons (IM34) corresponding to a plurality of the tires mounted to the second vehicle (52) are arranged on the right direction side.
H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulatorsProcesses of manufacture thereof
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/60 - Selection of substances as active materials, active masses, active liquids of organic compounds
H01M 4/70 - Carriers or collectors characterised by shape or form
H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulatorsProcesses of manufacture thereof
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/60 - Selection of substances as active materials, active masses, active liquids of organic compounds
H01M 4/70 - Carriers or collectors characterised by shape or form
The present invention provides a pneumatic tire 1 that has a tread portion 2. The pneumatic tire 1 has a sound absorber 5, which is sponge-like, disposed on an inner face side of the tread portion 2. A ratio (H/T) of hardness H (N) of the sound absorber 5 under 25% compression at 23˚C and height T (mm) of the sound absorber 5 in the radial direction of the tire is 1.0 to 2.5. A ratio (T/W) of height T (mm) of the sound absorber 5 and width W (mm) in the tire axial direction is 0.25 to 1.20.
A tire condition monitoring system 50 comprises: a first acquiring unit 51 for acquiring information relating to a fitted tire 20; and a second acquiring unit 52 for acquiring information relating to a load condition of the tire 20. The system 50 is configured such that a threshold for determining a condition of the tire 20 can be switched on the basis of the information relating to the fitted tire 20 acquired by the first acquiring unit 51, and the information relating to the load condition of the tire 20 acquired by the second acquiring unit 52.
This sleeve 2 for operating pointing devices has a palm cover 4 and an arm cover 6. The arm cover 4 has a back of wrist-side panel 10, a palmar-side panel 12, and a first opening 14. The first opening 14 has an outside end 16, an inside end 18, a back of wrist-side edge 20, and a palmar-side edge 22. The palmar-side edge 22 is located closer to a bottom side than the back of wrist-side edge 20. The area of the palmar-side panel 12 is smaller than the area of the back of wrist-side panel 10.
The present invention improves steering stability during high-speed running, especially response at corner entry. The tire according to the present invention includes a tread, wherein a cap rubber layer as a part of the tread is made of a rubber composition which contains a styrene/butadiene rubber (SBR) having a styrene content of 25 mass% or less in an amount of 80-100 parts by mass per 100 parts by mass of the rubber component, contains silica in an amount of 100 parts by mass or smaller per 100 parts by mass of the rubber component, and has a complex elastic modulus (30°CE*), as determined under the conditions of a temperature of 30°C, a frequency of 10 Hz, an initial strain of 5%, and a dynamic strain rate of 1% in the tensile deformation mode, of above 8.0 MPa. The tread has a thickness of 8.5 mm or less.
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
The present invention improves steering stability during high-speed running. The tire according to the present invention includes a tread, wherein a cap rubber layer as a part of the tread is made of a rubber composition which contains a styrene/butadiene rubber (SBR) having a styrene content of 25 mass% or less in an amount of 60-80 parts by mass per 100 parts by mass of the rubber component, contains silica in an amount of 100 parts by mass or larger per 100 parts by mass of the rubber component, and has a loss tangent (30°Ctanδ), as determined under the conditions of a temperature of 30°C, a frequency of 10 Hz, an initial strain of 5%, and a dynamic strain rate of 1% in the tensile deformation mode, of 0.27 or greater. The tread has a thickness of 13 mm or less.
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
The present invention improves wet grip performance after high-speed travel. Provided is a tire having a tread section. A cap rubber layer forming the tread section is formed from a rubber composition in which 60-80 parts by mass of 100 parts by mass of the rubber component is constituted by a styrene-butadiene rubber (SBR) having a styrene amount of 25 mass% or less. The rubber composition contains 100 parts by mass or more of silica per 100 parts by mass of the rubber component. The loss tangent (30°C tanδ) of the rubber composition, when measured in a tension deformation mode under the conditions of a temperature of 30°C, a frequency of 10 Hz, an initial strain of 5%, and a dynamic strain rate of 1%, is less than 0.27. The thickness of the tread section is 13 mm or less.
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
The present invention improves grip performance on ice- and snow-covered road surfaces. This tire comprises a tread section. A cap rubber layer forming the tread section is formed of a rubber composition that contains, in 100 parts by mass of a rubber component, at most 40 parts by mass of a styrene-butadiene rubber (SBR) having a styrene content of at most 25 mass%, and has a loss tangent (-30°C tanδ) of at least 0.10 as measured in a deformation mode of stretching, under a condition in which the temperature is -30°C, the frequency is 10 Hz, the initial strain is 5%, and the dynamic strain factor is 1%. The thickness of the tread section is 10-20 mm.
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
The present invention improves wear resistance during high-speed travel. A tire comprising a tread section, wherein: a cap rubber layer forming the tread section is formed from a rubber composition containing 60-80 parts by mass of styrene butadiene rubber (SBR) having a styrene content of 25% by mass or less per 100 parts by mass of a rubber component, and also containing 100 parts by mass or less of silica per 100 parts by mass of the rubber component, the rubber composition being such that, at a temperature of 30°C, a frequency of 10Hz, an initial strain of 5%, and a dynamic strain rate of 1%, the loss tangent (30°C tan δ) of the rubber composition measured in a tension deformation mode is greater than 0.25; and the thickness of the tread section is 6-15 mm.
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
The present invention addresses the problem of improving the wear resistance performance of a tire during high-speed driving. This tire comprises a tread portion, wherein: a cap rubber layer that forms the tread portion contains, in 100 parts by mass of a rubber component, at least 80 parts by mass of styrene-butadiene rubber (SBR) with a styrene content of at most 25 mass%, contains at most 100 parts by mass of silica with respect to 100 parts by mass of the rubber component, and is formed from a rubber composition which makes the cap rubber layer have a complex elastic modulus (30 °CE*) of at most 8.0 MPa as measured under the conditions of a temperature of 30 °C, a frequency of 10 Hz, an initial strain of 5%, a dynamic strain rate of 1%, and a deformation mode of tension; and the thickness of the tread portion is at most 9.0 mm.
C08F 236/10 - Copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated with vinyl aromatic monomers
The present invention improves ride comfort performance during high-speed travel. The present invention provides a tire comprising a tread section, wherein: a cap rubber layer forming the tread section is formed from a rubber composition that contains 40 parts by mass or less of styrene butadiene rubber (SBR) having a styrene content of 25 mass% or less per 100 parts by mass of rubber components, the rubber composition being such that the loss tangent (0°C tanδ) measured in a tension deformation mode at a temperature of 0°C, a frequency of 10Hz, an initial strain of 5%, and a dynamic strain rate of 1% is 0.10 or greater; and the thickness of the tread section is 10-20 mm.
This tire comprises a pair of side wall rubbers, a carcass cord topping rubber, a breaker topping rubber, and an inner liner rubber, wherein: at least one of the rubbers contains recycled carbon black; at least one rubber member forming the tire contains oil; and if the total amount (g) of recycled carbon black is A and the total amount (g) of oil included in the tire is B, A and B satisfy expression (1). The objective of the present invention is to improve durability. (1) … (A/B)×100>1
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
34.
WASTE TIRE ASSESSMENT METHOD, RECYCLED MATERIAL PRODUCTION METHOD, TIRE PRODUCTION METHOD
A recycled material production method according to the present invention includes a step S11 for acquiring tire information about a waste tire (200), steps S12–S17 for assessing whether all or a portion of the waste tire (200) is suitable for a starting material for a prescribed recycled material on the basis of the tire information acquired at step S11, and a first production step for using all or a portion of the waste tire (200) as assessed to be suitable for a starting material for the recycled material at steps S12–S17 to produce the recycled material.
EBTBEBTBEBTBTB is a value defined by TB (MPa) of repaired test piece/TB (MPa) of annealed test piece × 100. A repaired test piece is a test piece that was cut in the thickness direction in the center of the long side and the cut surfaces immediately bonded together and heat treated for 24 hours at 80°C. An annealed test piece is a test piece that has been heat treated for 24 hours at 80°C.
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY (Japan)
Inventor
Akahori, Tomohiro
Nonoyama, Takayuki
Abstract
The present invention provides: a rubber composition for tires, the composition being capable of changing the tire performance in response to temperature changes; and a tire. The present invention relates to a rubber composition for tires, the composition containing a rubber component that contains at least one rubber selected from the group consisting of an isoprene rubber, a butadiene rubber and a styrene butadiene rubber, a crosslinking agent, carbon black, a plasticizer and a temperature-responsive material A that contains a metal salt and a polymer having a carboxyl group, wherein relative to 100 parts by mass of the rubber component, the content of the crosslinking agent is more than 0 part by mass but less than 10 parts by mass, the content of the carbon black is more than 0 part by mass but less than 100 parts by mass, and the content of the plasticizer is more than 5 parts by mass.
C08L 33/02 - Homopolymers or copolymers of acidsMetal or ammonium salts thereof
C08L 101/12 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity
C08L 101/14 - Compositions of unspecified macromolecular compounds characterised by physical features, e.g. anisotropy, viscosity or electrical conductivity the macromolecular compounds being water soluble or water swellable, e.g. aqueous gels
The purpose of the present invention is to improve the volumetric energy density of an active material that constitutes an electrode of a lithium ion secondary battery, while maintaining the capacity retention rate of the active material. The present invention provides a method for producing a sulfur-based active material, the method comprising (1) a step for obtaining a starting material by mixing an acrylic resin, sulfur and an iron compound that contains a divalent or trivalent iron ion, and (2) a step for firing the starting material, wherein the median diameter of the iron compound is 12.00 µm or less.
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01G 11/50 - Electrodes characterised by their material specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
38.
SULFUR-BASED ACTIVE MATERIAL, ELECTRODE, AND LITHIUM ION SECONDARY BATTERY
The purpose of the present invention is to provide a novel sulfur-based active material capable of improving cycle characteristics, an electrode comprising the sulfur-based active material, specifically, a positive electrode or a negative electrode, and a lithium ion secondary battery comprising the electrode. Provided is a sulfur-based active material in which a mixture containing an acrylic monomer and sulfur is fired, the boiling point of the acrylic monomer being at least 230°C.
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
The purpose of the present invention is to maintain the capacity retention rate and also to improve the volumetric energy density of an active material constituting the electrodes of a lithium-ion battery. The present invention provides a method for producing a sulfur-based active material, the method comprising (1) a step for obtaining a raw material for firing by mixing an acrylic resin, sulfur and an iron compound that contains divalent or trivalent iron ions, and (2) a step for firing the raw material for firing, wherein the raw material for firing has a heating history of a single time.
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01G 11/50 - Electrodes characterised by their material specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
The present invention provides a tire with increased crack growth resistance. The present invention relates to a tire which is provided with a tire outer layer member formed of a rubber composition containing a rubber component, an acid-modified liquid polymer, and a metal filler and which has a content F (parts by mass) of the metal filler with respect to 100 parts by mass of the rubber component and has a maximum thickness T (mm) of the tire outer layer member satisfying Expression (1). (1) 0.4≤F/T≤10.0
The present invention pertains to a tire that is provided with a tread having at least one circumferential groove part. The circumferential groove part is formed of a groove part-forming rubber composition, and said groove part-forming rubber composition has a wet-state E* (MPa), a dry-state E* (MPa), wet-state tanδ and dry-state tanδ, and a groove depth D (mm) in the circumferential groove part that satisfy formula (1-1) and/or formula (1-2), and formula (2). (1-1): Wet-state E*/Dry-state E* ≤ 0.90 (1-2): Wet-state tanδ/Dry-state tanδ ≥ 1.10 (2): D /(Wet-state E*/Dry-state E*) > 9.0 (In the formulas, E* and tanδ represent the complex elastic modulus (MPa) and the loss tangent, respectively, after 30 minutes from the start of measurement which is conducted under the conditions of a temperature at 30°C, an initial strain of 10%, a dynamic strain of 1%, a frequency at 10 Hz, an elongation mode, and a measurement duration of 30 minutes. D represents the groove depth (mm) of the circumferential groove part.)
The present invention provides a tire that improves the overall performance of wet performance and dry performance. The invention pertains to a tire that comprises a tread having at least one circumferential groove section. The circumferential groove section is formed of a groove-section forming rubber composition containing a rubber component and silica. The following formulas (1) and (2) are satisfied by: Tanδ when the groove-section forming rubber composition is wet with water and tanδ when same is dry; and a ratio Z between a maximum groove depth D (mm) of the circumferential groove section and a maximum thickness T (mm) of the tread. (1): tanδ when wet with water/tanδ when dry > 1.00 (2): Z ≧ 0.10 (In the formula, tanδ is a loss tangent 30 minutes after the start of measurement, as measured under the conditions of: temperature, 30°C; initial distortion, 10%; motion distortion. 1%; frequency, 10Hz; extension mode; and measurement time, 30 minutes. Z is D/T.)
The present invention provides a rubber composition and a tire capable of suppressing a performance change when a road surface changes, for example from a dry road surface to a wet road surface or from a wet road surface to a dry road surface. More specifically, the present invention provides a rubber composition, wherein E*(MPa) when the road surface is wet with water, E*(MPa) when the road surface is dry, tanδ when the road surface is wet with water, tanδ when the road surface is dry, a 40% modulus (MPa) before a tensile test at 70°C and a 40% modulus (MPa) after the tensile test at 70°C, satisfy formulas (1) to (3). (1) E* when the road surface is wet with water/E* when the road surface is dry ≤ 0.90; (2) tanδ when the road surface is wet with water/tanδ when the road surface is dry is more than 1.00; (3) the 40% modulus after the tensile test at 70° C/the 40% modulus before the tensile test at 70° C ≥ 0.45. (In the formulas, E* and tanδ are the complex modulus and the loss tangent after 30 minutes from the start of measurement, when measured under the following conditions: temperature of 30° C, initial strain of 10%, dynamic strain of 1%, frequency of 10 Hz, elongation mode, and measurement time of 30 minutes. The 40% modulus after the tensile test at 70° C is the tensile strength a 40% elongation as measured in accordance with JIS K6251:2010 under an atmosphere of 70° C, and releases stress after stretch up to 50% under an atmosphere of 70° C. The 40% modulus before the tensile test at 70°C is the tensile strength at 40% elongation as measured in accordance with JIS K6251:2010 prior to performing the tensile test at 70° C.)
A tire comprising a tread section, wherein the tread section has a groove inclined in the tire circumferential direction or in the tire width direction, the tread section has at least one rubber layer comprising a rubber composition that contains a rubber component, and the rubber composition has a domain with a dynamic storage modulus (0ºCE') of 1000 MPa or more at 0ºC and a dynamic storage modulus (23ºCE') of 35 MPa or less at 23ºC when measured using a scanning probe microscope.
This sleeve 2 for operating pointing devices has a palm cover 4, an arm cover 6, and a band 8. The palm cover 4 covers the palm heel 39 of a palm 36 of a player. The arm cover 6 is continuous with the palm cover 4. The arm cover 6 covers the forearm of the player. The band 8 is sewn tightly to the cover 4. The band 8 prevents the palm cover 4 from slipping off the palm 36.
A tire including a tread having at least one rubber layer and a breaker, wherein a cap rubber layer constituting the tread surface has a thickness of 20% or greater with respect to the overall thickness of the tread, a tread rubber constituting the tread has an average acetone-extractable content of 12.0 mass% or less, the difference between the average acetone-extractable content of the tread rubber and the acetone-extractable content of a breaker topping rubber is 7.0 mass% or less, and the tread rubber has an average ash content of 7.5 mass% or greater.
B60C 11/00 - Tyre tread bandsTread patternsAnti-skid inserts
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 9/18 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
The present invention makes it possible to provide a repairing sheet and a tire repairing method with which a tire can be processed with reduced time and effort. This repairing sheet to be attached to a tire region includes a retaining layer capable of retaining an additive to be supplied to the inner part of the tire region, wherein the retaining layer has a breaking strength of at least 0.5 MPa and an elongation at break of at least 5%.
12122 in the rubber composition forming the second layer is more than 6.0 mass%. When a dynamic stimulus is applied for 120 hours under the conditions where the dynamic stress is 0.45 MPa, the frequency is 50 Hz, and the temperature is 80℃ while the first layer the second layer are bonded together, the change rate of the acetone extraction amount in the rubber composition forming the first layer before and after the application of the dynamic stimulus is -10% to 10%.
This tire state estimation method includes the following. (1) Disposing, on the inner side of a tire, at least one power generator that generates voltage in response to deformation of the tire. (2) Acquiring measurement data in a time series obtained by measuring, while the tire is rotating, the voltage and/or a physical quantity corresponding to the voltage. (3) Identifying a peak that repeatedly appears in the measurement data. (4) Identifying a value of the peak and/or an interval of the peak. (5) Estimating the state of the tire on the basis of the identified value and/or the identified interval. The power generator is provided with a first member and a second member. The first member and the second member are configured such that one is positively charged and the other is negatively charged in accordance with pressure applied to the first member and the second member.
Provided is a method, etc., for estimating uneven tire wear. This tire state estimation method involves: obtaining an image which includes both ends of the tread of a target tire, and captures said tread from the front in a manner such that said tread is continuous in a prescribed direction; inputting the obtained image into a trained first machine learning model; and deriving an output from the trained first machine learning model. Therein, the output of the trained first machine learning model corresponds to the estimation results for the uneven wear of the target tire.
A tire management system (100) according to this disclosure comprises a management device (10) and a database unit (30). The tire management system (100) acquires travel history data on a history of a cause for a decrease in tire performance of a tire (1) mounted to a vehicle (50) (S202) and determines a replenishing agent for recovering the decreased tire performance on the basis of the acquired travel history data (S209, S210).
A tire abnormality determination system (100) according to this disclosure comprises: a relating information acquisition unit (111) which acquires deterioration relating information which may influence deterioration of a non-pneumatic tire (1) mounted to a vehicle (50); a first determination processing unit (112) which determines at least one of whether or not a sign of an abnormality in the non-pneumatic tire (1) exists and whether or not the abnormality in the non-pneumatic tire (1) exists on the basis of the deterioration relating information; and an output processing unit (115) which outputs a first determination result by the first determination processing unit (112) to a predetermined output destination.
The purpose of the present invention is to provide a method for producing trans-polyisoprenoid (trans-1,4-polyisoprene) having a molecular weight of more than 105in an enzymatically reactive manner. The present invention is a method for producing trans-polyisoprenoid, the method comprising a binding step for binding a trans-prenyltransferase (tPT) family protein capable of producing a product having a molecular weight of 104 or more under the condition where the protein is not bound to a lipid membrane to a lipid membrane in vitro.
Provided is a pneumatic tire that has substantially improved crack resistance performance and durability performance. According to the present invention, a pneumatic tire has a tread part that has grooves in the surface thereof and comprises a first rubber composition that forms bottom parts of the grooves and a second rubber composition that is adjacent to the first rubber composition further to the inside in the tire radial direction than the bottom parts of the grooves. When the acetone-extractable fraction of the first rubber composition and the acetone-extractable fraction of the second rubber composition are, respectively, E1 mass% and E2 mass%, (E1-E2)<20, and when the cross-sectional width of the tire, the outer diameter of the tire, and the volume of the space occupied by the tire when the tire is mounted on a standard rim at an internal pressure of 250 kPa are, respectively, Wt (mm), Dt (mm), and a virtual volume V (mm3), the tire satisfies expression (1) and expression (2). (1) 1700≤(Dt2×π/4)/Wt≤2827.4 (2) [(V+1.5×107)/Wt]≤2.88×105
The tire condition determination system (100) according to the present disclosure acquires, from a vehicle (50), condition data including various information that may affect deterioration of a base portion of a tire (1) (S104), calculates an evaluation value S indicating the condition of the base portion of the tire (1) on the basis of the acquired condition data (S105), and determines the reusability of the tire (1) on the basis of the evaluation value S (S106).
The present invention is a production method for a sulfur-based active material that involves (1) a step for mixing an acrylic resin, sulfur, and an iron compound that includes di- or trivalent iron ions to obtain a raw material and (2) a step for firing the raw material. The production method is characterized by increasing volume energy density while maintaining the capacity retention of an active material that is to constitute an electrode of a lithium ion secondary battery.
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
This motorcycle tire 2 is equipped with a pair of beads 10 and a carcass 12 which spans the interval between said beads 10. The carcass 12 is equipped with: a first ply 12a provided with a plurality of first cords 36 arranged in parallel with one another; and a second ply 12b layered to the outside of the first ply 12a and provided with a plurality of second cords 40 arranged in parallel with one another. The first cords 36 are angled relative to the equatorial plane CL, and the angle θ1 formed by the first cords 36 relative to the equatorial plane CL is substantially 90°. The second cords 40 are angled relative to the equatorial plane CL, and the angle θ2 formed by the second cords 40 relative to the equatorial plane CL is substantially 65-85°, inclusive.
B60C 9/08 - Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship the cords extend transversely from bead to bead, i.e. radial ply
B60C 9/09 - Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship the cords extend transversely from bead to bead, i.e. radial ply combined with other carcass plies having cords extending diagonally from bead to bead, i.e. combined radial ply and bias angle ply
B60C 15/00 - Tyre beads, e.g. ply turn-up or overlap
58.
NITRILE OXIDE COMPOUND AND IONIC-FUNCTIONAL-GROUP-CONTAINING POLYMER
Provided are: a novel nitrile oxide compound having both a nitrile oxide group capable of reacting with various unsaturated polymers and an ionic functional group; an ionic-functional-group-containing polymer containing the nitrile oxide compound introduced thereinto; and a rubber composition and a tire each including or obtained using the ionic-functional-group-containing polymer.
C08C 19/22 - Incorporating nitrogen atoms into the molecule
C08F 36/04 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
Provided are a phenylboronic acid compound that can impart to a polymer the ability to reversibly change physical properties when exposed to water, a polymer that exhibits reversible changes in physical properties when exposed to water, and a polymer composition and tire that use said polymer. The present invention relates to a phenylboronic acid compound represented by the following formula (1-1). (R21and R22are the same or different and are divalent hydrocarbon groups which may have a substituent, and may contain a heteroatom. R23–R25 are the same or different and are hydrogen atoms or monovalent hydrocarbon groups which may have a substituent, and may contain a heteroatom. m is an integer of 1–5.)
C08C 19/42 - Addition of a reagent which reacts with a hetero atom or a group containing hetero atoms of the macromolecule reacting with metals or metal-containing groups
C08F 36/04 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
Provided is a pneumatic with which steering stability during high-speed travel is improved while good ride comfort is maintained. The pneumatic tire has a tread part 2. A band cord 12 of a band layer 9 is a hybrid cord in which first filaments 16 and second filaments 17 are twisted together. In a tire-radially inner region of a first circumferential groove 10, the maximum thickness t1 of topping rubber 13 on the tire-radially outer side of the band cord 12 is 1.0 mm or less. The minimum distance d1 from the bottom of the first circumferential groove 10 to the tire-radially outer surface of the band layer 9 is 2.0 mm or less. The distance d2 in the normal direction of the tire from a groove edge 10e of the first circumferential groove 10 to the outer surface of the band layer 9 is 15.0 mm or less.
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
B60C 9/22 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel the plies being arranged with all cords disposed along the circumference of the tyre
B60C 11/00 - Tyre tread bandsTread patternsAnti-skid inserts
LLL (kg) of the tire is 0.0160 or less. The tread portion includes land parts partitioned by a plurality of circumferential grooves continuously extending in the tire circumferential direction and tread ground contact ends. A first rubber layer forming a tread surface is formed of a rubber composition containing a rubber component. A pure water contact angle θ of the rubber composition is 105° or more.
The purpose of the present disclosure is to provide a method for purifying a protein derived from a membrane protein complex by eluting the membrane protein complex in the form of a complex even when the protein complex is formed. The present disclosure relates to a method for purifying a protein derived from a membrane protein complex, the method comprising: a protein-binding step in which a membrane protein complex that has been eluted from a membrane is bound to an antibody using an artificial polymer; a protein-eluting step in which the membrane protein complex that has been bound to the antibody in the protein-binding step is eluted under a condition in which the pH is 6.0 or higher; and an artificial polymer removal step in which the artificial polymer is removed from the membrane protein complex eluted in the protein-eluting step by performing solvent extraction under a condition in which the pH is 7.0 or lower.
C07K 1/22 - Affinity chromatography or related techniques based upon selective absorption processes
C07K 1/36 - ExtractionSeparationPurification by a combination of two or more processes of different types
C08F 22/00 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the moleculeSalts, anhydrides, esters, amides, imides, or nitriles thereof
A tire condition determination system (100) acquires, from a vehicle (50), condition data containing various information that may affect the deterioration of the base portion of a tire (1), and calculates an evaluation value S indicating the condition of the base portion of the tire (1) on the basis of the acquired condition data. This allows an inspector inspecting the tire for suitability as a base tire to determine in advance the condition of the base portion of the tire, which is a factor in determining whether or not the tire can be used as a base tire.
In a magnet 1 for detecting tire wear according to the present invention, the attraction of iron or the like due to the magnetism of a magnet exposed on the surface of a tread is suppressed, the magnet 1 for detecting tire wear being embedded in a tread 21 of a tire 2 and comprising a soft magnetic material layer 11 containing a soft magnetic material and a hard magnetic material layer 12 containing a hard magnetic material, wherein the magnet is magnetized in a Y-axis direction which is the layering direction of the soft magnetic material layer 11 and the hard magnetic material layer 12. Since the magnetism in the Y-axis direction emitted from a magnetic pole end 14 is reduced by the soft magnetic material layer 11, the attraction force that attracts iron or the like can be suppressed.
A sealant tire comprising a sealant layer on an inner circumferential surface thereof, wherein, when the cross-sectional width and the outer diameter of the sealant tire which is incorporated with a regular rim and is set to have an internal pressure of 250 kPa are respectively defined as Wt (mm) and Dt (mm), Wt and Dt satisfy formula (1), and the dynamic complex elastic modulus G* of the sealant layer is 0.50-3.50 kPa when being measured in compliance with ISO 13145 in an atmosphere at 100°C with a 100% strain at a frequency of 0.1 Hz. Formula (1): 1600 ≤ (Dt2×π/4)/Wt ≤ 2827.4
Provided is a pneumatic tire having at least a tire inner cavity surface composed of a thermoplastic resin, wherein deformation of the tire accompanying heat generation during traveling is suppressed. The pneumatic tire has a tread part 2. At least the tire inner cavity surface 5 is composed of a thermoplastic resin. The tread part 2 includes a tread reinforcing layer 10 on the inner side in the tire radial direction from the center position of the thickness of the tread part 2. A plurality of grooves 11 are provided in the outermost surface of the tread part 2. A negative ratio, which is the ratio of the total opening area of the plurality of grooves (11) to the virtual ground contact area if the plurality of grooves (11) were all filled, is 20-50%.
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
B60C 9/18 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
C08L 23/22 - Copolymers of isobuteneButyl rubberHomopolymers or copolymers of other iso-olefins
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
B60C 19/00 - Tyre parts or constructions not otherwise provided for
A pneumatic tire (1) comprises: a tread part (2) including land sections (24) delimited by a plurality of main grooves (22) formed in a tread surface (21); an inner liner (7) forming a tire inner surface (7A) on an inner side of the tread part (2); and a mount member (10) that is provided on the tire inner surface (7A) and on which an electric device can be mounted. In the pneumatic tire (1), the acetone extraction amount (AE2) of a rubber composition contained in the inner liner (7) is greater than the acetone extraction amount (AE1) of a rubber composition contained in the mount member (10).
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 19/00 - Tyre parts or constructions not otherwise provided for
This pneumatic tire (1) comprises: a tread part (2) having land portions (24) divided by a plurality of main grooves (22) formed in a tread surface (21); an inner liner (7) constituting a tire inner surface (7A) on an internal side of the tread part (2); and a mount member (10) which can mount an electrical device provided to the tire inner surface (7A). In the pneumatic tire (1), a complex modulus of elasticity E*1 of a rubber composition constituting the mount member (10) is greater than a complex modulus of elasticity E*2 of a rubber composition constituting the inner liner (7).
B60C 19/00 - Tyre parts or constructions not otherwise provided for
B60C 5/14 - Inflatable pneumatic tyres or inner tubes without separate inflatable inserts, e.g. tubeless tyres with transverse section open to the rim with impervious liner or coating on the inner wall of the tyre
This tire assembly is provided with a tire to be mounted on a vehicle, an elastic body arranged on the inside of the tire, and a power generator disposed between an inside surface of the tire and the elastic body. The power generator is provided with a first member and a second member. The first member has a first insulating film forming a first surface. The second member has a second insulating film forming a second surface that faces opposite the first surface and is in contact with the first surface. The first member and the second member are configured so that the true contact surface area between the first surface and the second surface changes depending on the pressure applied to the first member and the second member. The first insulating film and the second insulating film are configured so that the change in the true contact surface area causes one to become positively charged and the other to become negatively charged. The elastic body urges the power generator toward the inside surface of the tire.
Provided is a tire having high peeling resistance such that an electronic component mounting member unlikely peels off from the surface of the tire even when a large impact is exerted on the tire during a high-speed travel in a low-temperature environment. In the tire, the electronic component mounting member for incorporating an electronic component is attached to the surface of a tire inner member, the electronic component mounting member comprises an electronic component storage part for storing the electronic component and a bonding part having a bonding surface for mounting the electronic component mounting member on the surface of the tire inner member, and the complex modulus of elasticity E*rr (MPa) of the bonding part at 0°C and the complex modulus of elasticity E*ii (MPa) of the tire inner member at 0°C satisfy Expression 1. Expression 1: E*rr/E*ii<1
This method is for predicting a clamping force BF of a bead part 4 of a tire 1 having bead cores 5 in the bead part 4. The method includes a step for using a mathematical formula to predict the clamping force BF of the bead part 4 when the tire 1 is fitted to a rim R of a wheel. In the predicting step, the bead clamping force BF is predicted by using the inner diameter IDw of the bead core, the rim diameter ODR, and the thickness Ct of a tire radial inside which is further inside than the bead core 5.
Provided is a tire having, inter alia, exceptional ride quality after long-term storage. This tire comprises a tread portion and a sidewall portion, the tire being characterized in that the tread portion and/or the sidewall portion is composed of a thermoplastic elastomer composition, and the thermoplastic elastomer composition is such that the compression permanent strain (cps) at 70°C represented by the following formula is 40% or lower. cps (%)=\{(t0–t1)/(t0)\}×100 (In this formula, cps represents the compression permanent strain (%) at 70°C, t0 represents the initial thickness (mm) of a test sample (thermoplastic elastomer composition), and t1 represents the thickness (mm) of the test sample (thermoplastic elastomer composition) after a 24-hour compression permanent strain test.)
Provided is a pneumatic tire in which low rolling resistance during high speed travel is further improved and loss of steering stability during high speed travel is further minimized. Provided is a pneumatic tire having a tread section and a belt layer, wherein reinforcing cords in the belt layer are formed by arranging cords composed of monofilaments in an amount of at least 50 cords/5 cm in the tire width direction in a cross section of the belt layer in the radial direction of the tire, and the tire satisfies (formula 1), where Wt (mm) is the cross-sectional width and Dt (mm) is the outer diameter of the tire when attached to a standard rim and set to an internal pressure of 250 kPa. (Formula 1): 1500 ≤ (Dt2 × π/4)/Wt
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 3/04 - Tyres characterised by transverse section characterised by the relative dimensions of the section, e.g. low profile
B60C 9/18 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
B60C 11/13 - Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
Provided is a pneumatic tire that sufficiently achieves both low rolling resistance and noise performance during high-speed travel. The present invention is a pneumatic tire comprising a tread section and a belt layer, wherein monofilament cords are used as reinforcing cords in the belt layer, and an arranged number e of the monofilament cords per 5 cm in the tire-width direction (cords/5 cm) in a tire radial direction cross-section of the belt layer, and a tire cross-sectional width Wt (mm), incorporated in a regulation rim and with an internal pressure of 250 kPa, satisfy (formula 1) and (formula 2) below. (Formula 1): e / (0.31 Wt + 14.35) > 1; (Formula 2): e / (0.31 Wt + 56.45) < 1
A badminton racket 2 has: a shaft 4; a grip 10 into which a portion of the shaft 4 in the vicinity of the butt end 20 is inserted; and a frame 6 attached in the vicinity of a tip end 22 of the shaft 4. An out-of-plane primary natural frequency ωo1 (Hz) and an out-of-plane secondary natural frequency ωo2 (Hz) in the natural vibration of the badminton racket 2 satisfy the following formula. ωo2 ≤ 2.5 × ωo1 + 23.0
This badminton racket 2 satisfies mathematical expression (1.1) or (1.2). (1.1): y≥x+5.0, (1.2): y≤x–5.0. In mathematical expressions (1.1) and (1.2), y is determined by mathematical expression (1.3). (1.3): y=(ωo1*ωo2)1/2). In mathematical expressions (1.1) and (1.2), x is determined by mathematical expression (1.4). (1.4): x=EI1*7.0+EI2*0.28+71.0. In mathematical expression (1.3), ωo1 represents the out-of-plane primary natural frequency (Hz) of natural oscillation of the racket 2 under free-constraint conditions, and ωo2 represents the out-of-plane secondary natural frequency (Hz) of said natural oscillation of the racket 2. In mathematical expression (1.4), EI1 represents the cantilever rigidity (N/mm) of the racket 2, and EI2 represents the hitting surface rigidity (N/mm) of the racket 2.
The present invention provides a pneumatic tire having excellent durability when traveling at high speeds. A pneumatic tire includes a side portion and a belt layer. Monofilament cords are used as reinforcing cords in the belt layer, and in a tire-radial-direction cross-section of the belt layer, an array count e of monofilament cords per 5 cm in a tire width direction (cords / 5 cm) and a tire cross-sectional width Wt (mm) when the tire is assembled to a normal rim and an inner pressure is set to 250 kPa satisfy the following (Expression 1) and (Expression 2). (Expression 1): e / (139.5 - 0.3 Wt) > 1 (Expression 2): e / (191.5 - 0.3 Wt) < 1
Provided is a tire that is capable of delivering superior brake performance on a dry road surface. This tire has a tread part 2. The tread part 2 comprises a plurality of circumferential grooves 3 and a plurality of land parts 4. The land parts 4 comprise a first shoulder land part 11 and a first middle land part 12 disposed adjacent to the first shoulder land part 11. The first shoulder land part 11 has formed therein a plurality of first shoulder sipes 21. The middle land part 12 has formed therein a plurality of first middle sipes 30. The first shoulder sipes 21 and the first middle sipes 30 each comprise a body portion that extends in the tire radial direction and an enlarged width portion that is open to the tread surface of the corresponding land portion and has a greater width than that of the body portion. The opening width of each of the first shoulder sipes 21 at the tread surface is greater than that of each of the first middle sipes 30 at the tread surface.
This badminton racket 2 comprises a shaft 4, a grip 10 where the vicinity of the back end 20 of the shaft 4 is inserted, and a frame 6 which is attached near the tip end 22 of the shaft 4. The out-of-plane primary natural frequency ωo1 (Hz) and out-of-plane secondary natural frequency ωo2 (Hz) of the natural frequency under free constraint conditions of the badminton racket 2 satisfy the numerical expression below. ωo2 ≥ 2.5 × ωo1 + 37.0
A tire management system (100) comprises an acquisition processing unit (62) that acquires state information related to the state of a pneumatic tire (11) that is installed on a vehicle (1), a detection processing unit (63) that detects abnormalities at the pneumatic tire (11) on the basis of the state information acquired by the acquisition processing unit (62), and a first output processing unit (64) that, when an abnormality has been detected by the detection processing unit (63), outputs first route information to a display unit of an onboard communication device (13) of the vehicle (1), the first route information including a first route to a specific stopping place from among a plurality of predetermined stopping places, the specific stopping place having a stopping space that corresponds to the size of the vehicle (1).
Provided is a pneumatic tire that prevents breakage of conductive threads, that has low electric resistance even after the tire has a large local deformation, and that also has excellent ride comfort. The pneumatic tire has a carcass 6. The carcass 6 includes a carcass ply 6A that extends from one bead part 4, through a tread part 2, and to the other bead part 4. Provided in the carcass ply 6A is at least one conductive thread 9 that extends from the one bead part 4 to at least the tread part 2. The conductive thread 9 has an electric resistance per unit length of not more than 108 Ω/cm. The conductive thread 9 has a stress of not more than 13 N at 1% elongation.
A tire management system (100) comprises: a first communication device (2) that, when a vehicle (1) is present within a communication range of predetermined wireless communication standards, acquires condition information about the condition of a tire (11) transmitted from a pneumatic pressure detection device (12) mounted in the vehicle (1); and a management server (4) including a storage processing unit (70) that stores in a memory unit (43) the condition information acquired by the first communication device (2).
This tire air pressure management system (100) comprises an acquisition process unit (61) that acquires the air pressure and air temperature of a tire (11) mounted on a vehicle (1), a correction process unit (62) that corrects the air pressure acquired along with the air temperature on the basis of the difference between the air temperature acquired by the acquisition process unit (61) and a predetermined reference temperature, and a first output process unit (63) that outputs determination information used to determine whether there is a need to adjust the air pressure of the tire (11), based on the air pressure after correction by the correction process unit (62).
A pneumatic tire (1) comprises a tread portion (2) including a land portion (24) divided by a plurality of main grooves (22) formed in the tread surface (21), and a mounting member (10) which is provided on a tire inner surface (7A) on the inner side of the tread portion (2) and onto which an electric device is mountable. The mounting member (10) is disposed on the tire inner surface (7A) at a position corresponding to the land portion (24). The complex modulus E*1 of the rubber composition forming the mounting member (10) is greater than the complex modulus E*2 of the rubber composition forming the tread portion (2).
Provided is a tire having excellent peeling resistance such that it is unsusceptible to having an electronic component peel off from the surface of the tire, even when a large impact is exerted on the tire during high-speed travel. An electronic component attachment member for embedding an electronic component is attached to a surface of a tire inner member disposed in a tire inner cavity. The electronic component attachment member comprises an electronic component storage part for storing an electronic component, and a bonding part having a bonding surface for attaching the electronic component attachment member to the surface of the tire inner member. A line that passes through the center point of the bonding surface of the electronic component attachment member with the tire inner cavity surface and that is perpendicular to the surface profile of a tread part does not pass through a circumferential-direction groove formed in the surface of the tread part, and the complex elastic modulus E*rr (MPa) of the bonding part at 30°C and the complex elastic modulus E*tt (MPa) of tread rubber constituting the tread part at 30°C satisfy E*rr/E*tt<1.
The present disclosure provides: a natural rubber that has good adhesiveness after high heat/humidity aging; a rubber-steel cord composite that uses this natural rubber; and a tire that uses this rubber-steel cord composite. The present disclosure relates to a natural rubber having a calcium content of less than 100 ppm.
C08K 3/00 - Use of inorganic substances as compounding ingredients
B60C 9/00 - Reinforcements or ply arrangement of pneumatic tyres
B60C 9/04 - Carcasses the reinforcing cords of each carcass ply arranged in a substantially parallel relationship
B60C 9/20 - Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
This manufacturing method comprises: (A) a step for preparing a first sheet piece 20a and a second sheet piece 20b comprising unvulcanized rubber; and (B) a step for winding an elongated sheet 26 onto a drum 6, the long sheet 26 being obtained by joining the front end of the second sheet piece 20b to the rear end of the first sheet piece 20a. Step (B) preferably comprises: (B'1) a step for obtaining the elongated sheet 26 by joining the front end of the second sheet piece 20b to the rear end of the first sheet piece 20a; and (B'2) a step for winding the sheet 26 onto the drum 6 by rotating the drum 6 while feeding the sheet 26 from a servicer 4 to the drum 6.
A plasticizer is provided which makes it possible to change tire performance in the required temperature range of the tire and which enables production of a tire composition; a composition and a tire are also provided. The present invention relates to a plasticizer which, for use in a resin and/or elastomer, has a group, wherein the interaction of the group with antifreeze changes with change in temperature and the lower critical solution temperature of the group is -20°C to 20°C.
C08L 101/00 - Compositions of unspecified macromolecular compounds
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
C08F 293/00 - Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
Provided is an elastomer composition that can change the performance of a tire in response to a change in temperature. Also provided is a tire. The present disclosure pertains to an elastomer composition containing a butadiene elastomer and a temperature responsive resin having a hydrophilicity that changes due to to a change in temperature, said elastomer composition satisfying, for two prescribed temperatures having a temperature difference of at least 10°C therebetween, the conditions of the elastic modulus at the lower temperature when submerged in water/the elastic modulus at the lower temperature when dry≤0.95, and the elastic modulus at the higher temperature when submerged in water/the elastic modulus at the higher temperature when dry>0.95, said lower temperature being less than 25°C.
C08L 9/00 - Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
B60C 1/00 - Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
B60C 15/06 - Flipper strips, fillers, or chafing strips
C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
C08L 101/02 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups
Provided are an elastomer composition and a tire, the elastomer composition being capable of changing a tire performance in response to temperature changes. This elastomer composition comprises a styrene-based elastomer and a temperature-responsive resin which changes in hydrophilicity with temperature. When examined at two given temperatures which differ by at least 10°C, the elastomer composition satisfies [contact angle at the lower temperature]/[contact angle at the higher temperature]≤0.90, the lower temperature being lower than 25°C.
C08L 53/00 - Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers
C08L 57/00 - Compositions of unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
C08L 101/02 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups
The present invention is characterized by comprising: a first member having a large-diameter part and a small-diameter part; a second member connected to the first member from the small-diameter part side; and an element disposed between the first member and the second member. Further, the present invention is characterized in that: the first member has a recess part at an end surface thereof on the second member side; the bottom of the recess part reaches a boundary position between the large-diameter part and the small-diameter part or a position on the second member side relative to said boundary position; and the second member has a protrusion part that is protruded toward the first member and that is fitted into the recess part in a state where the element is positioned between the second member and the recess, and a screw hole which extends from an end surface opposed to the first member to the inside of the recess part and into which a screw part of a plunger is screwed.
A tire wear measurement device 10 according to the present invention is capable of accurately detecting wear of a tread part, provides high linearity between wear and magnetic flux density of a magnetic body, and comprises: a magnetic body 13 embedded in a tread part 23 and is worn following the wear of the tread part; and a magnetic sensor 12 disposed at a position facing the magnetic body 13 in a tire 20. In the tire wear measurement device 10 where the magnetic sensor 12 detects a change of the magnetic flux density of a magnetic field M formed by the magnetic body 13, the bottom surface 13B of the magnetic body 13 appears on an outer surface 22 which is a ground contact surface of the tread part 23, and the area of the bottom surface 13B becomes smaller as the tread part 23 is worn.
G01B 7/00 - Measuring arrangements characterised by the use of electric or magnetic techniques
G01B 7/06 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width, or thickness for measuring thickness
This tire comprises a tread, wherein: the tread has land parts partitioned by a plurality of circumferential grooves, and has locations where, in a tire meridian cross-section including the tire rotation axis, the widthwise length of the land part closest to the tire equatorial plane increases from the outside to the inside in the tire radial direction; the tread has at least one rubber layer; a first rubber layer constituting the tread surface is configured from a rubber composition containing a rubber component that includes a diene-based rubber; and the contact angle A1 of pure water measured after immersing the rubber composition constituting the first rubber layer in water for one hour at 23°C under normal pressure and furthermore leaving the rubber composition to dry for 24 hours at 23°C under normal pressure, and the contact angle A2 of pure water measured after measuring the contact angle A1 and then immersing the rubber composition in water for one hour at 23°C under normal pressure and furthermore leaving the rubber composition to dry for 24 hours at 23°C under normal pressure, are both 80° or less.
C08L 45/00 - Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring systemCompositions of derivatives of such polymers
C08L 57/02 - Copolymers of mineral oil hydrocarbons
C08L 101/02 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups
B60C 11/00 - Tyre tread bandsTread patternsAnti-skid inserts
B60C 11/13 - Tread patterns characterised by the groove cross-section, e.g. for buttressing or preventing stone-trapping
LLL (kg) of the tire is 0.0150 or less; Wt and Dt satisfy expression (1) where Wt (mm) is the tire section width and Dt (mm) is the tire outer diameter; the tread has at least one rubber layer composed of a rubber composition containing a rubber component, a filler, and a silane coupling agent; and the mean value of tanδ of the rubber composition at 15°C to 30°C is 0.20 or less, as measured under conditions of frequency at 10 Hz, initial strain at 10%, and amplitude at ±0.5% . (1): (π/4) × (Dt2/Wt) ≥ 1700
Provided is a tire having improved braking/driving performance and turning performance on ice. The tire has a tread part 2. The tread part 2 includes a land portion 4. A plurality of closed sipes 8 are arranged in a tire axial direction in the land portion 4. Each of the closed sipes 8 includes: a first end 8a and a second end 8b; a first sipe piece 11 extending from the first end 8a side in the tire axial direction; a second sipe piece 12 extending from the second end 8b side in the tire axial direction; and a third sipe piece 13 inclined with respect to the tire axial direction between the first sipe piece 11 and the second sipe piece 12. The closed sipes 8 arranged in the tire axial direction overlap each other in the tire axial direction.
A pneumatic tire is provided which has sufficiently reduced rolling resistance during high-speed travel and which has excellent durability. The pneumatic tire has a bead part, carcass and tread, wherein: a bead-reinforcing layer that reinforces the bead part from outside of the carcass is provided outside of the carcass in the tire axis direction; and the pneumatic tire satisfies expression (1) and expression (2) below, where Wt (mm) is the cross-sectional width of the tire when mounted on a standard rim and inflated to an internal pressure of 250 kPa, Dt (mm) is the outer diameter, and the virtual volume V (mm3) is the volume of the space occupied by the tire. Expression (1): 1600 ≤ (Dt2× π/4) / Wt ≤ 2827.4 Expression (2): [(V + 1.5 × 107) / Wt] ≤ 2.88 × 105
patents
