COMPOSICION DE CAUCHO CONDUCTORA DE ELECTRICIDAD, SU PREPARACION Y USO

Composición de caucho conductor eléctricamente que está esencialmente libre de aceite y que comprende, basado en 100 ppc de caucho, (A) 50 a 95 ppc de al menos un caucho sólido, (B) 5 a 50 ppc de un caucho líquido seleccionado de al menos uno de caucho líquido basado en hidrocarburo de dieno líquido y caucho líquido basado en isobutileno, y (C) 10 a 160 ppc de al menos un negro de carbón con un valor de yodina (ASTM D1510) dentro de un intervalo de 190 a 1.500 g/kg y un valor DBP (ASTM D2414) dentro de un intervalo de 110 a 500 cm 3 /100 g, donde dicho caucho líquido tiene un peso molecular de promedio en peso dentro de un intervalo de 10.000 a 50.000, y donde dicha composición de caucho tiene una resistividad de volumen dentro de un intervalo de 0''5 a 500 ohmios-cm. An electrically-conductive rubber composition and article of manufacture having a component thereof. In one aspect, such article of manufacture is a pneumatic rubber tire of a toroidal shape having a cavity designed to be substantially enclosed by the toroidal shape of the tire and its closure completed by a rigid rim onto which the tire is designed to be mounted. In another aspect, such pneumatic tire contains such rubber composition positioned on or within a rubber innerliner of the tire; wherein the innerliner is a surface of said cavity. In a further aspect, said rubber composition is an annular strip (2) of an electrically-conductive rubber composition on or within such tire innerliner. The said annular strip is intended to be an antenna for having a capability of receiving electromagnetic waves from outside the tire and of transmitting electromagnetic waves from the inside of the tire to the outside of the tire.