Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
  • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
  • B60C1/0016—Compositions of the tread
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
  • B60C11/0041—Tyre tread bands; Tread patterns; Anti-skid inserts comprising different tread rubber layers
  • B60C11/005—Tyre tread bands; Tread patterns; Anti-skid inserts comprising different tread rubber layers with cap and base layers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C19/00—Tyre parts or constructions not otherwise provided for
  • B60C19/002—Noise damping elements provided in the tyre structure or attached thereto, e.g. in the tyre interior
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K3/00—Use of inorganic substances as compounding ingredients
  • C08K3/02—Elements
  • C08K3/04—Carbon
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L21/00—Compositions of unspecified rubbers
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L7/00—Compositions of natural rubber
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
  • B60C11/0008—Tyre tread bands; Tread patterns; Anti-skid inserts characterised by the tread rubber
  • B60C2011/0016—Physical properties or dimensions
  • B60C2011/0033—Thickness of the tread
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K3/00—Use of inorganic substances as compounding ingredients
  • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
  • C08K3/013—Fillers, pigments or reinforcing additives
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K3/00—Use of inorganic substances as compounding ingredients
  • C08K3/02—Elements
  • C08K3/08—Metals
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K3/00—Use of inorganic substances as compounding ingredients
  • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
  • C08K3/20—Oxides; Hydroxides
  • C08K3/22—Oxides; Hydroxides of metals
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T152/00—Resilient tires and wheels
  • Y10T152/10—Tires, resilient
  • Y10T152/10495—Pneumatic tire or inner tube

Definitions

• the invention relates to tires for motor vehicles and rubber compositions used for the manufacture of such tires.
• noise noise refers rather to the perceived overall level in the vehicle and in a frequency range up to 2000 Hz.
• the noise called “cavity” refers to the annoyance due to the resonance of the cavity of inflating the tire envelope.
• a first object of the invention relates to a radial tire for a motor vehicle, comprising:
• the tires of the invention are particularly intended for equipping tourism-type motor vehicles, including 4x4 vehicles (four-wheel drive) and SUV vehicles ("Sport Utility Vehicles"), two-wheeled vehicles (especially motorcycles) as vehicles.
• industrial vehicles chosen in particular from vans and "heavy goods vehicles” (ie, metro, buses, road transport equipment such as trucks, tractors, trailers, off-the-road vehicles such as agricultural or civil engineering).
• test piece "C" this module being the secant modulus "true” that is to say, brought back to the actual section of the test piece (normal temperature and humidity conditions according to ASTM D 1349 of 1999);
• radially oriented reinforcement or “radial reinforcement” means a reinforcement contained substantially in the same axial plane or in a plane forming, with an axial plane, an angle less than or equal to
• the tire of the invention therefore has the essential feature of being provided with a sub-layer or noise-reducing base, comprising a rubber composition which comprises at least one diene elastomer, as a high-density filler more than 50 phr. from particles to - -
• At least one diene elastomer of the highly unsaturated type in particular a diene elastomer chosen from the group consisting of polybutadienes (BR) (in particular those having a cis-1,4 bond ratio greater than 90%), polyisoprenes (NR), natural rubber (NR), butadiene copolymers, isoprene copolymers (other than IIR) and mixtures of these elastomers.
• BR polybutadienes
• NR polyisoprenes
• NR natural rubber
• butadiene copolymers isoprene copolymers (other than IIR) and mixtures of these elastomers.
• the elastomers can be for example block, statistical, sequence, microsequential, and be prepared in dispersion or in solution; they can be coupled and / or star or functionalized with a coupling agent and / or starring or functionalization.
• a coupling agent for example, there may be mentioned for example functional groups comprising a C-Sn bond or amino functional groups such as benzophenone for example;
• a reinforcing inorganic filler such as silica mention may be made, for example, of silanol or polysiloxane functional groups having a silanol end (as described, for example, in US Pat. No.
• alkoxysilane groups as described, for example, in US 5,977,238), carboxylic groups (as described for example in US 6,815,473 or US 2006/0089445) or polyether groups (as described by US Pat. - -
• the diene elastomer used is a ternary blend (mixture) of NR (or IR), BR and SBR.
• the composition comprises from 40 to 80 phr of NR (or IR) and from 20 to 60 phr of BR and SBR.
• the introduction of the high density filler into the elastomeric composition can be carried out according to various known methods, for example by solution mixing, by mass mixing in an internal mixer, or by extrusion mixing.
• Reinforcing inorganic filler means any inorganic or mineral filler, irrespective of its color and origin (natural or synthetic), also called “white” filler, “clear” filler or sometimes “non-black filler” "As opposed to carbon black, capable of reinforcing on its own, with no other means than an intermediate coupling agent, a rubber composition for the manufacture of tires, in other words able to replace, in its function of reinforcement, a conventional carbon black of pneumatic grade; such a filler is generally characterized, in known manner, by the presence of hydroxyl groups (-OH) on its surface.
• -OH hydroxyl groups
• an at least bifunctional coupling agent (or bonding agent) is used in a well-known manner to ensure a sufficient chemical and / or physical connection between the inorganic filler (surface of its particles) and the diene elastomer.
• organosilanes or at least bifunctional polyorganosiloxanes are used.
• polysulphide silanes having the following general formula (I) are not suitable for the following definition: (I) Z - A - S x - A - Z, wherein:
• polysulphurized silanes By way of examples of polysulphurized silanes, mention may be made more particularly of the bis (C 1 -C 4 ) alkoxy (C 1 -C 4 ) alkyl (C 1 -C 4 ) alkyl (Ci-C) polysulfides (especially disulfides, trisulphides or tetrasulfides). 4 )), such as polysulfides of bis (3-trimethoxysilylpropyl) or bis (3-triethoxysilylpropyl).
• Figures 1 and 2 appended represent in radial section, very schematically (particularly without respecting a specific scale), two preferred examples of pneumatic tires for motor vehicle with radial carcass reinforcement, according to the invention.
• the tire (1) schematized comprises an apex zone (2) comprising a tread (3) (for simplicity, including a very simple sculpture), the radially outer portion (3 a) of which is intended to enter in contact with the road, two non-extensible beads (4) in which is anchored a carcass reinforcement (6).
• the top (2), joined to said beads (4) by two sides (5), is known per se reinforced by a crown reinforcement or "belt" (7) at least partly metallic and radially external to the carcass reinforcement (6) passing through this crown zone (2), this belt (7) consisting for example of at least two superposed crossed plies reinforced by metal cables.
• this tire (1) further comprises, in known manner, a layer of rubber or inner elastomer (commonly called “inner liner” or “inner liner”) which defines the radially inner face of the tire and which is intended to protect the sheet carcass of the air diffusion from the interior space to the tire.
• This tire (1) according to the invention is characterized in that the base portion (3b) of its tread (3) is constituted by the underlayer which has been described in detail above.
• a rolling test is conducted in which the sound level emitted is evaluated by measuring the sound pressure level near the tire, during the driving of the tire. vehicle, thanks to microphones arranged at a distance very close to the tire
• DTM Near Tire Microphone

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• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Tires In General (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

Country Status (5)

Cited By (9)

Families Citing this family (23)

Citations (5)

Family Cites Families (10)

• 2008
  • 2008-12-17 FR FR0858716A patent/FR2939724B1/fr not_active Expired - Fee Related
• 2009
  • 2009-12-10 US US13/132,349 patent/US20110259498A1/en not_active Abandoned
  • 2009-12-10 WO PCT/EP2009/008832 patent/WO2010069510A1/fr not_active Ceased
  • 2009-12-10 EP EP09767988.0A patent/EP2379346B1/fr not_active Not-in-force
  • 2009-12-10 JP JP2011541169A patent/JP5603877B2/ja not_active Expired - Fee Related

Patent Citations (5)

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