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US 6,013,718 AGranted
Rubber composition based on silica and on functionalized diene polymer which has a silanol end functional group
AssigneeMichelin & Cie
InventorsJean-Luc Cabioch, Gerard Labauze
Life of this patent
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Abstract
A rubber composition which has a reduced hysteresis making it particularly suitable for use as a tread of a tire having reduced rolling resistance, including silica as predominant reinforcing filler and at least one diene polymer bearing, as a chain end, a silanol functional group or a polysiloxane block which has a silanol end.
Claims9
A vulcanizable rubber composition comprising at least one functionalized diene polymer, a reinforcing filler which comprises silica, and an organosilane bonding agent for coupling the functionalized diene polymer to the silica;
- wherein the functionalized diene polymer is a diene polymer bearing as a chain end (a) a single silanol functional group, or (b) a polysiloxane block which has a single silanol end;
- wherein the diene polymer is selected from the group consisting of a diene homopolymer, a copolymer of diene monomers, and a copolymer of diene monomers and vinylaromatic compounds, and wherein the silica is present as major component of the reinforcing filler.
Dependencies are inferred from the claim text.