Bridgestone Corporation

Bridgestone Europe Nv/sa

Valeria Grenci

Raffaele Di Ronza

Claudia Aurisicchio

Pasquale Agoretti

Salvatore Cotugno

Alessandro Roselli

Josè Antonio Silicani

A rubber compound containing silicon dioxide for the production of tires, comprising at least one polymer base with cross-linkable unsaturated chain, silicon dioxide, a silane bonding agent, a vulcanization system and lignin comprising, in turn, at least part of its aromatic rings substituted with amine substituents.

Rubber compounds containing silicon dioxide for the production of tyres

A method of producing rubber tire compounds, including a first mixing step in which at least one cross-linkable, unsaturated-chain polymer base, silica, and a silane bonding agent in the alkoxymercaptoalkyl-silane class are mixed together; and a final mixing step in which a curing system having at least sulphur and accelerants is added to and mixed with the mix. A nucleophile compound and zinc oxide are mixed with the polymer base at the first mixing step. And the method includes a second mixing step between the first mixing step and the final mixing step, and in which a silane bonding agent in the polysulphide organosilane class is added to and mixed with the mix from the first mixing step.

Method of producing rubber tyre compounds

A method of curing a compound having a cross-linkable, unsaturated-chain polymer base and a curing system; the method employing microwaves as a form of energy to promote curing reactions; and the curing system including compounds of general formula (I) ([RRRNR(NRRR)])y(n+1)X(I) where: X is an atom or anionic group; R, R, R, which are the same or different, are each CH, where m is 1 to 3, or CHCHCHor CHCHCH, R, R, R, which are the same or different, are each CHCHCHor CHCHCH; n is 0 or 1; y is 1 when n is 1; y is 1 or 2 when n is 0; Ris an aliphatic group C-Cwhen n is 0; is an aliphatic group C-Cwhen n is 1; when n is 0, at least one of R, R, R, Rhas a double bond.

Rubber compound microwave curing method

A tire mix containing a cross-linkable, unsaturated-chain polymer base, curing agents, a reinforcing filler, and wax; the wax containing a paraffin wax containing a maximum of 45% by weight of normal paraffin.

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Rome, Italy

Valeria Grenci