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AssigneeMichelin Recherche et Technique S.A.
InventorsPierre Robert, Jean-Luc Cabioch, Jean-Michel Favrot
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The present invention relates to a vulcanizable rubber composition which can be used for the manufacture of tires. The invention also provides for a tire, the tread of which comprises such a composition. The rubber composition posses improved hysteresis and physical properties in the vulcanized state, while retaining satisfactory processing properties in the non-vulcanized state. The rubber composition comprises a reinforcing white filler and a diene block copolymer which is intended to interact with the white filler, the block copolymer comprising a diene block polymer having on at least one chain end thereof a polyether block having a molecular weight of between 1000 g/mol and 3000 g/mol, the polyether block corresponding to the formula: O—CH2—CH2—O)n—R, (I) in which n is an integer other than zero and R is a saturated or unsaturated hydrocarbon.
A vulcanizable rubber composition comprising a reinforcing white filler, which can be used for the manufacture of a tire, wherein the rubber composition comprises a diene block copolymer which is intended to interact with said reinforcing white filler, said diene block copolymer comprising a diene polymer block having on at least one chain end thereof a polyether block, the molecular weight of which is between 1000 g/mol and 3000 g/mol, said polyether block corresponding to the formula:
A vulcanizable rubber composition comprising a silica reinforcing filler, which can be used for the manufacture of a tire, wherein the rubber composition comprises a diene block copolymer intended to interact with the silica, the block copolymer comprising a styrene-butadiene copolymer having on at least one chain end thereof a polyether block having a molecular weight of about 2000 g/mol, said polyether block having the formula
A process for the preparation of a vulcanizable rubber composition comprising a reinforcing white filler, wherein the rubber composition comprises a diene block copolymer which is intended to interact with said reinforcing white filler, said diene block copolymer comprising a diene polymer block having on at least one chain end thereof a polyether block, the molecular weight of which is between 1000 g/mol and 3000 g/mol, said polyether block corresponding to the formula
Dependencies are inferred from the claim text.