COMPOSITION DE CAOUTCHOUC POUR PNEUMATIQUE, A BASE D'ELASTOMERE DIENIQUE ET D'UN OXYDE DE TITANE RENFORCANT
    5.
    发明公开
    COMPOSITION DE CAOUTCHOUC POUR PNEUMATIQUE, A BASE D'ELASTOMERE DIENIQUE ET D'UN OXYDE DE TITANE RENFORCANT 有权
    橡胶组合物的轮胎,基于服务体和弹性体的增强氧化钛

    公开(公告)号:EP1114092A1

    公开(公告)日:2001-07-11

    申请号:EP00935098.4

    申请日:2000-05-23

    IPC分类号: C08K3/22 C08L21/00 B60C1/00

    摘要: The invention concerns a rubber composition to be used for making tyres, comprising at least (i) a diene elastomer, (ii) a white filler as reinforcing filler and (iii) a coupling agent ( white filler/elastomer). The invention is characterised in that said white filler consists entirely or partly of a titanium oxide having the following characteristics: (a) it comprises more than 0.5 % in volume of a metal element other that titanium selected from the group consisting of Al, Fe, Si, Zr or a mixture of those elements; (b) its BET surface specific area ranges between 20 and 200 m2/g; (c) its average particle size (in volume), recorded as d¿w?, ranges between 20 and 400 nm; (d) its speed of ultrasonic deagglomeration, recorded as α, measured according to the so-called ultrasonic deagglomeration test, at an amplitude of an ultrasonic probe of 600 W, is higher than 2.10?-2 νm-1¿/s. The invention also concerns the use of said rubber composition for making rubber articles, in particular tyres or semi-finished products designed for those tyres. The inventive composition is used in particular for making coloured tyres or semi-finished articles such as running treads of tyre sidewalls.