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US 2003/0114571 A1Published application
Wet traction in tire treads compounded with surface modified siliceous and oxidic fillers
OwnerXiao-Dong Paninventor
Life of this patent
Estimating the term…
Abstract
The wet traction of a vehicle tire is significantly improved when about 5 phr to about 200 phr of a surface-treated (hydrophobated) siliceous or oxidic filler is included in the vulcanized rubber compound used for the tire tread.
Claims36
A vehicle tire having improved wet traction, having a tread comprising a vulcanized rubber compound that comprises:
- (a) 100 parts by weight of an elastomer;
- (b) about 5 phr to about 200 phr of a surface-treated siliceous or oxidic filler, wherein a plurality of hydroxyl groups on the filler surface prior to surface treatment have been replaced by —OSiR1R2R3 groups, wherein R1, R2 and R3 represent hydrocarbon chains having from one to about 20 carbon atoms;
- (c) optionally about 5 phr to about 100 phr of an untreated reinforcing filler selected from the group consisting of silica, carbon black, and mixtures thereof;
- (d) optionally about 0.1% to about 15% by weight of a bifunctional silica coupling agent, based on the weight of the untreated silica;
- and
- (e) a cure agent including sulfur.
3 more elements
A vehicle tire having improved wet traction, having a tread comprising a vulcanized rubber compound that comprises:
- (a) 100 parts by weight of an elastomer;
- (b) about 5 phr to about 200 phr of a surface-treated silica filler, wherein a plurality of hydroxyl groups on the filler surface prior to surface treatment have been replaced by —OSi(CH3)3 groups;
- (c) optionally about 5 phr to about 100 phr of an untreated reinforcing filler selected from the group consisting of silica, carbon black, and mixtures thereof;
- (d) optionally about 0.1% to about 15% by weight of a bifunctional silica coupling agent, based on the weight of the untreated silica;
- and
- (e) a cure agent including sulfur.
3 more elements
A vehicle tire having improved wet traction, having a tread comprising a vulcanized rubber compound that comprises:
- (a) 100 parts by weight of an elastomer selected from the group consisting of homopolymers of conjugated diene monomers, and copolymers and terpolymers of the conjugated diene monomers with monovinyl aromatic monomers and trienes;
- (b) about 5 phr to about 200 phr of a hexamethyldisilazane-treated silica;
- (c) optionally about 5 phr to about 100 phr of an untreated reinforcing filler selected from the group consisting of silica, carbon black, and mixtures thereof;
- (d) optionally about 0.1% to about 15% by weight of a bifunctional silica coupling agent, based on the weight of the untreated silica;
- and
- (e) a cure agent including sulfur.
3 more elements
A vehicle tire having improved wet traction, having a tread comprising a vulcanized rubber compound that comprises:
- (a) 100 parts by weight of an elastomer selected from the group consisting of homopolymers of conjugated diene monomers, and copolymers and terpolymers of the conjugated diene monomers with monovinyl aromatic monomers and trienes;
- (b) about 5 phr to about 200 phr of a hexamethyldisilazane-treated fumed silica;
- (c) optionally about 5 phr to about 100 phr of an untreated reinforcing filler selected from the group consisting of silica, carbon black, and mixtures thereof;
- (d) optionally about 0.1% to about 15% by weight of a bifunctional silica coupling agent, based on the weight of the untreated silica;
- and
- (e) a cure agent including sulfur.
3 more elements
A method to improve the wet traction of a tire tread, comprising:
- (a) mixing together
- (i) 100 parts by weight of an elastomer selected from the group consisting of homopolymers of conjugated diene monomers, and copolymers and terpolymers of the conjugated diene monomers with monovinyl aromatic monomers and trienes,
- (ii) about 5 phr to about 200 phr of a surface-treated siliceous or oxidic filler, wherein a plurality of hydroxyl groups on the filler surface prior to surface treatment have been replaced by —OSiR1R2R3 groups, wherein R1, R2 and R3 represent hydrocarbon chains having from one to about 20 carbon atoms,
- (iii) optionally about 5 phr to about 100 phr of an untreated reinforcing filler selected from the group consisting of silica, carbon black, and mixtures thereof;
- (iv) optionally about 0.1% to about 15% by weight of a bifunctional silica coupling agent, based on the weight of the untreated silica;
- and
- (v) a cure agent including sulfur;
- (b) vulcanizing the mixture to obtain vulcanized rubber;
- and
- (c) producing a tire tread from the vulcanized rubber.
7 more elements
A method to improve the wet traction of a tire tread, comprising:
- (a) mixing together
- (i) 100 parts by weight of an elastomer selected from the group consisting of homopolymers of conjugated diene monomers, and copolymers and terpolymers of the conjugated diene monomers with monovinyl aromatic monomers and trienes,
- (ii) about 5 phr to about 200 phr of a surface-treated silica filler, wherein a plurality of hydroxyl groups on the filler surface prior to surface treatment have been replaced by —OSi(CH3)3 groups,
- (iii) optionally about 5 phr to about 100 phr of an untreated reinforcing filler selected from the group consisting of silica, carbon black, and mixtures thereof;
- (iv) optionally about 0.1% to about 15% by weight of a bifunctional silica coupling agent, based on the weight of the untreated silica;
- and
- (v) a cure agent including sulfur;
- (b) vulcanizing the mixture to obtain a vulcanized rubber;
- and
- (c) producing a tire tread from the vulcanized rubber.
7 more elements
A method to improve the wet traction of a tire tread, comprising:
- (a) mixing together
- (i) 100 parts by weight of an elastomer,
- (ii) about 5 phr to about 200 phr of a filler comprising hexamethyldisilazane-treated fumed silica,
- (iii) optionally about 5 phr to about 100 phr of an untreated reinforcing filler selected from the group consisting of silica, carbon black, and mixtures thereof;
- (iv) optionally about 0.1% to about 15% by weight of a bifunctional silica coupling agent, based on the weight of the untreated silica;
- and
- (v) a cure agent;
- (b) vulcanizing the mixture to obtain a vulcanized rubber;
- and
- (c) producing a tire tread from the vulcanized rubber.
7 more elements
A vulcanizable rubber composition for use as treadstock in order to improve the wet traction of tire treads, comprising:
- (a) 100 parts by weight of an elastomer;
- (b) about 5 phr to about 200 phr of a surface-treated siliceous or oxidic filler, wherein a plurality of hydroxyl groups on the filler surface prior to surface treatment have been replaced by —OSiR1R2R3 groups, wherein R1, R2 and R3 represent hydrocarbon chains having from one to about 20 carbon atoms;
- (c) optionally about 5 phr to about 100 phr of an untreated reinforcing filler selected from the group consisting of silica, carbon black, and mixtures thereof;
- (d) optionally about 0.1% to about 15% by weight of a bifunctional silica coupling agent, based on the weight of the untreated silica;
- and
- (e) a cure agent including sulfur.
3 more elements
A vulcanizable rubber composition for use as treadstock in order to improve the wet traction of tire treads, comprising:
- (a) 100 parts by weight of an elastomer;
- (b) about 5 phr to about 200 phr of a surface-treated silica filler, wherein a plurality of hydroxyl groups on the filler surface prior to surface treatment have been replaced by —OSi(CH3)3 groups;
- (c) optionally about 5 phr to about 100 phr of an untreated reinforcing filler selected from the group consisting of silica, carbon black, and mixtures thereof;
- (d) optionally about 0.1% to about 15% by weight of a bifunctional silica coupling agent, based on the weight of the untreated silica;
- and
- (e) a cure agent including sulfur.
3 more elements
A vulcanizable rubber composition for use as treadstock in order to improve the wet traction of tire treads, comprising:
- (a) 100 parts by weight of an elastomer selected from the group consisting of homopolymers of conjugated diene monomers, and copolymers and terpolymers of the conjugated diene monomers with monovinyl aromatic monomers and trienes;
- (b) about 5 phr to about 200 phr of a hexamethyldisilazane-treated silica;
- (c) optionally about 5 phr to about 100 phr of an untreated reinforcing filler selected from the group consisting of silica, carbon black, and mixtures thereof;
- (d) optionally about 0.1% to about 15% by weight of a bifunctional silica coupling agent, based on the weight of the untreated silica;
- and
- (e) a cure agent including sulfur.
3 more elements
A vulcanizable rubber composition for use as treadstock in order to improve the wet traction of tire treads, comprising:
- (a) 100 parts by weight of an elastomer selected from the group consisting of homopolymers of conjugated diene monomers, and copolymers and terpolymers of the conjugated diene monomers with monovinyl aromatic monomers and trienes;
- (b) about 5 phr to about 200 phr of a hexamethyldisilazane-treated fumed silica;
- (c) optionally about 5 phr to about 100 phr of an untreated reinforcing filler selected from the group consisting of silica, carbon black, and mixtures thereof;
- (d) optionally about 0.1% to about 15% by weight of a bifunctional silica coupling agent, based on the weight of the untreated silica;
- and
- a cure agent including sulfur.
3 more elements
Dependencies are inferred from the claim text.