Patent ID: 6823913
Filing Date: 2004-11-30
Classification: B60C,C08L,Y10T

Abstract:
A safety support for mounting on a wheel rim inside a vehicle tire, the safety support being capable of supporting a tread of the tire in the event of a drop in inflation pressure, wherein the support comprises a vulcanized rubber composition comprising:(a) a diene elastomer, (b) particles of an &agr;-olefinic thermoplastic polymer having a melting point greater than or equal to 150Â° C., in an amount of 5 to 30 parts by weight per 100 parts diene elastomer (phr), wherein the mean size by weight of the particles is between 50 &mgr;m and 500 &mgr;m, (c) greater than 60 phr of reinforcing filler, and (d) from 3 to 8 phr of sulphur, wherein the particles of thermoplastic polymer are dispersed within the diene elastomer.