Tire for vehicle wheels comprising crosslinked elastomeric composition
AssigneePirelli Tyre S.p.A.
InventorsEmiliano Resmini, Luigia Rossiello, Diego Tirelli, Franco Peruzzotti
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Abstract
A tire for vehicle wheels, includes at least one structural element obtained by crosslinking a crosslinkable elastomeric composition including at least one vulcanized rubber in a subdivided form surface treated with at least one oxidizing agent; at least one diene elastomeric polymer, and at least one sulfur-based vulcanizing agent. A surface treatment process of vulcanized rubber and crosslinkable elastomeric composition is obtained with the vulcanized rubber in a subdivided form surface treated with at least one oxidizing agent.
Claims44
A tire for vehicle wheels, comprising at least one structural element obtained by crosslinking a crosslinkable elastomeric composition comprising:
- at least one vulcanized rubber in a subdivided form surface treated with at least one oxidizing agent selected from inorganic or organic oxidizing agents;
- at least one diene elastomeric polymer;
- and
- at least one sulfur-based vulcanizing agent;
- and
- wherein the organic oxidizing agents are selected from substituted and unsubstituted quinones and quinone derivatives, quinone imines and quinone diimines, hypervalent iodine compounds, nitroarenes, triarylaminium salts, oxonium salts, peroxides and nitrosium salts.
A process for producing a crosslinkable elastomeric composition comprising the following steps:
- (a) surface treating at least one vulcanized rubber in a subdivided form with at least one oxidizing agent selected from inorganic or organic oxidizing agents and
- (b) mixing the surface treated vulcanized rubber in a subdivided form obtained in step (a) with at least one diene elastomeric polymer and at least one sulfur-based vulcanizing agent;
- and wherein the organic oxidizing agents are selected from substituted and unsubstituted quinones and quinone derivatives, quinone imines and quinone diimines, hypervalent iodine compounds, nitroarenes, triarylaminium salts, oxonium salts, peroxides and nitrosium salts.
Dependencies are inferred from the claim text.