Silica-containing rubber composition vulcanizable with sulfur
AssigneeMichelin Recherche et Technique S.A.
InventorDidier Vasseur
Life of this patent
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Abstract
The present invention provides for a coupling system (white filler/diene elastomer) for a rubber composition based on diene elastomer reinforced with a white filler, formed by the association of a polysulphurized alkoxysilane, a zinc dithiophosphate and a guanidine derivative. The invention also provides a rubber composition usable for the manufacture of tires, comprising, as base constituents, one or more diene elastomer(s), a reinforcing white filler, a polysulphurized alkoxysilane coupling agent with which are associated a zinc dithiophosphate and a guanidine derivative. Also provided is a process for preparing such a rubber composition, and a tire or semi-finished product, in particular a tread for a tire, comprising a rubber composition according to the invention.
Claims46
A rubber composition usable for the manufacture of tires, comprising, as base constituents, a diene elastomer, a reinforcing white filler, and a coupling system, said coupling system comprising a polysulphurized alkoxysilane coupling agent, a zinc dithiophosphate and a guanidine derivative.
A process for preparing a rubber composition usable in the manufacture of a tire comprising incorporating by kneading into a diene elastomer, a reinforcing white filler and a coupling system, said coupling system comprising a polysulphurized alkoxysilane coupling agent, a zinc dithiophosphate and a guanidine derivative.
A tire or a semi-finished rubber product intended for tires, selected from the group consisting of treads, underlayers for such treads, crown plies, sidewalls, carcass plies, beads, protectors, inner tubes and airtight internal rubbers for tubeless tires comprising a rubber composition, said rubber composition comprising as base constituents, a diene elastomer, a reinforcing white filler and a coupling system, said coupling system comprising a polysulphurized alkoxysilane coupling agent, a zinc dithiophosphate and a guanidine derivative.
A coupling system for a rubber composition based on a diene elastomer reinforced by a white filler, usable for the manufacture of tires, the coupling system comprising a polysulphurized alkoxysilane coupling agent, a zinc dithiophosphate and a guanidine derivative.
A method of coupling a reinforcing white filler and a diene elastomer in a rubber composition usable for the manufacture of tires comprising adding to said diene elastomer and reinforcing white filler a coupling system comprising a polysulfurized alkoxysilane coupling agent, a zinc dithiophosphate and a guanidine derivative.
Dependencies are inferred from the claim text.