TYRE WITH CROWN COMPRISING A LAYER HAVING A THERMOPLASTIC ELASTOMER

• Main Authors: VASSEUR, Didier, LOPITAUX, Garance, LOPEZ, Béatrice
• Format: Patent
• Language: English; French; German
• Published: 04.03.2020
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; VEHICLE TYRES; VEHICLES IN GENERAL

Radial tire having: a crown surmounted by a tread having at least one radially outer elastomer layer which contacts the road when the tire is rolling; two inextensible beads, two sidewalls connecting the beads to the tread, a carcass reinforcement passing into the two sidewalls and anchored in the beads; a crown reinforcement or belt placed circumferentially between the carcass reinforcement and the tread; a radially inner elastomer sublayer, having a formulation different from the formulation of the radially outer elastomer layer, and placed between the radially outer layer and the belt, wherein said sublayer contains a rubber composition having at least one diene elastomer, a reinforcing filler and more than 10 phr of a hydrogenated thermoplastic styrene copolymer, which makes possible substantial improvement in rolling resistance and handling performance compromise.