TYRE, THE TREAD OF WHICH COMPRISES A POLY(ALKYLENE ESTER) RESIN

摘要

A tyre, the tread of which comprises a rubber composition comprising at least: a diene elastomer; from 100 to 150 phr of a reinforcing inorganic filler; a poly(alkylene ester) thermoplastic resin; a plasticizing system comprising: according to a content A of between 5 and 60 phr, a hydrocarbon resin exhibiting a Tg of greater than 20° C.; according to a content B of between 5 and 60 phr, a plasticizer which is liquid at 20° C., the Tg of which is less than -20° C.; and it being understood that A+B is greater than 40 phr. The use of a poly(alkylene ester) resin, combined in particular with high contents of filler and plasticizers, makes it possible to improve the stiffness of the tread and thus the road behaviour of the tyre, without affecting the hysteresis and thus the rolling resistance.