Tire tread rubber mixture for pneumatic vehicle tires
AssigneeContinental Aktiengesellschaft
InventorNikolaus Rennar
Life of this patent
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Abstract
A sulfur-vulcanizable rubber mixture for a tire tread includes at least one terpolymer with a conjugated diene, an aromatic vinyl compound, and a monoolefin monomer. At least one phenolic component selected from the group consisting of a phenolic resin and a precursor mixture, containing phenol and aldehyde, for a phenolic resin is also present. A reinforcing agent in the form of finely divided silica or a mixture of finely divided silica and carbon black is also added.
Claims14
A sulfur-vulcanizable tire tread rubber mixture comprising:
- a) at least one terpolymer comprising a conjugated diene, an aromatic vinyl compound, and a monoolefin monomer;
- b) up to 90 weight-% relative to a combined elastomer contents a)+b) of at least one elastomer selected from the group consisting of a diene elastomer and a copolymer of a conjugated diene and an aromatic vinyl compound;
- c) 0.5 to 20 parts by weight relative to 100 parts by weight of the combined elastomer contents a)+b) of at least one phenolic component selected from the group consisting of a phenolic resin and a precursor mixture, wherein said precursor mixture consists of at least one phenol and at least one aldehyde and wherein said phenolic resin is prepared by polycondensation from said precursor mixture;
- and
- d) 40 to 100 parts by weight relative to 100 parts by weight of the combined elastomer contents a)+b) of a reinforcing agent selected from the group consisting of finely divided silica and a finely divided silica/carbon black mixture.
A method for producing a tire tread rubber mixture, said method comprising the steps of:
- mixing at a temperature of 110.degree. to 150.degree. C.
- a) at least one terpolymer comprising a conjugated diene, an aromatic vinyl compound, and a monoolefin monomer;
- b) up to 90 weight-% relative to a combined elastomer contents a)+b) of at least one elastomer selected from the group consisting of a diene elastomer and a copolymer of a conjugated diene and an aromatic vinyl compound;
- c) 0.5 to 20 parts by weight relative to 100 parts by weight of the combined elastomer contents a)+b) of at least one phenolic component selected from the group consisting of a phenolic resin and a precursor mixture, wherein the precursor mixture consists of at least one phenol and at least one aldehyde and wherein the phenolic resin is prepared by polycondensation from the precursor mixture;
- and
- d) 40 to 100 parts by weight relative to 100 parts by weight of the combined elastomer contents a)+b) of a reinforcing agent selected from the group consisting of finely divided silica and a finely divided silica/carbon black mixture;
- and
- admixing a vulcanization system at a temperature below vulcanization temperature.
A tire comprising a tread strip consisting of a sulfur-vulcanized rubber mixture comprising:
- a) at least one terpolymer comprising a conjugated diene, an aromatic vinyl compound, and a monoolefin monomer;
- b) up to 90 weight-% relative to a combined elastomer contents a)+b) of at least one elastomer selected from the group consisting of a diene elastomer and a copolymer of a conjugated diene and an aromatic vinyl compound;
- c) 0.5 to 20 parts by weight relative to 100 parts by weight of the combined elastomer contents a)+b) of at least one phenolic component selected from the group consisting of a phenolic resin and a precursor mixture, wherein the precursor mixture consists of at least one phenol and at least one aldehyde and wherein the phenolic resin is prepared by polycondensation from the precursor mixture;
- and
- d) 40 to 100 parts by weight relative to 100 parts by weight of the combined elastomer contents a)+b) of a reinforcing agent selected from the group consisting of finely divided silica and a finely divided silica/carbon black mixture.
Dependencies are inferred from the claim text.