| abstract |
A process for producing tyres for vehicles wheels comprises the following steps: obtaining at least one crosslinkable elastomeric material; making a raw tyre by assembling a plurality of structural elements, at least one of which comprising said at least one crosslinkable elastomeric material; molding and crosslinking the raw tyre so as to obtain a finished tyre; wherein the step of obtaining said at least one crosslinkable elastomeric material includes: (i) mixing at least one layered clay (a), at least one further filler (b) and at least one elastomer (c), so as to at least partially delaminate said at least one layered clay within the at least one elastomer; (ii) adding to the mixture prepared in step (i) at least one quaternary alkyl onium cation (d) selected from quaternary alkyl ammonium or quaternary alkyl phosphonium or mixture thereof. |