Bridgestone Corporation

Bridgestone Europe Nv/sa

Giancarlo Cossu

Paolo Straffi

Ludovica Caliano

Pasquale Agoretti

Gianluca Forte

Francesco Botti

Alessandra Bartoloni

Maria Cecilia Palumbi, I

Roberto Comparelli

Valerio Margiotta

Dennis Rettura

Cristian Capaldi

A rubber mix for tires including at least one cross-linkable polymer base, a reinforcing filler, a vulcanization system, a reinforcing resin and a dithiol chemical according to the formula SHRSH, wherein, in the formula, R is an aliphatic or aromatic group composed of 3 to 12 atoms.

Rubber mix to produce tyres

A method for preparing a rubber compound comprising at least one first mixing step in which at least part of a cross-linkable polymer base is mixed at least with a reactive reinforcing filler, a dendrimer functionalized with polar groups adapted to interact with the reactive reinforcing filler and a nucleophile agent; and a subsequent mixing step in which the compound being prepared is mixed with a vulcanization system.

Rubber compounds containing silicon dioxide for the production of tyres

A rubber compound for tyres comprising a cross-linkable unsaturated chain polymer base comprising, in turn, at least a rubber of synthetic origin, a silica-free filler at least partially comprising carbon black, a vulcanization system and a mercapto carboxylic acid.

Rubber compound for tyre production

A method of producing a rubber compound containing silica, the method including a step of dispersing the silica in a polymer base, and a following step of mixing the previously formed mixture with curing agents. The step of dispersing the silica in the polymer base includes the following sequence of operations: soaking the polymer base in a liquid silica precursor to form a swollen polymer; &#x2014;adding the swollen polymer to an organic solvent, and continually stirring the swollen polymer solution; &#x2014;adding water and a silica synthesizing catalyst to the swollen polymer solution; &#x2014;precipitating a polymer gel matrix by adding a precipitating agent; &#x2014;separating and washing the precipitated polymer gel matrix.

Method of producing a rubber compound comprising silica

A tire rubber compound having at least one cross-linkable, unsaturated-chain polymer base, and a curing system of at least sulphur, stearic acid, zinc oxide, and a chelating agent for complexing the zinc ion.

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Rome, Italy

Giancarlo Cossu