Composition of rubber for the manufacture of tyres, use of a rubber composition and titanium oxide, process to strengthen a composition of dyne rubber usable for the manufacture of tyres, rubber article, pneumatic tyre and tread band

摘要

COMPOSITION OF BORRACH FOR THE MANUFACTURE OF COMPOSITIES, USE OF A BORRACH COMPOSITION AND TITANIUM OXIDE, PROCESS TO REQUIRE A DIFFICULT COMPOSURE OF BORRACH USED FOR THE MANUFACTURE OF TYTICS, ARTICLE OF BOARCH, EURATOM AND BANKING." rubber composition usable for the manufacture of tyres, comprising at least (i) a dinic elastomer, (ii) a white reinforcement load load load load load load and (iii) a coupling agent (white load/elastomer),characterised by the fact that the said white load consists in whole or in part of titanium oxide having the following characteristics: (a) it comprises more than 0,5% in mass of a metal element other than the titanium chosen in the group consisting of Al, Fe, Si, Zr or a mixture of these elements; (b) its specific surface BET is between 20 and 200 m2/g; (c) its average particle size (in mass) denoted d~w~ is between 20 to 400 nm; (d) its degglomeration speed, denoted 244 ,measured in the said ultrasound disaglomeration test, the 100% power of a 600-W ultrasound probe, is greater than 2.10-1-1-O-1/s. Use of a rubber composition according to the invention for the manufacture of rubber articles, in particular tyres or semi-finished rubber products intended for these tyres. The invention's composition is notably used for the manufacture of coloured tyres of semi-finished articles such as tread strips or tyre flanks.