| 摘要 |
A reinforcing aluminum-based filler which can be used for reinforcing diene rubber compositions intended for the manufacture of tires, comprising an aluminum (oxide-)hydroxide corresponding, with the exception of any impurities and the water of hydration, to the general formula (a and b being real numbers): <?in-line-formulae description="In-line Formulae" end="lead"?>Al(OH)<SUB>a</SUB>O<SUB>b</SUB>, with 0<a<=3 ANDb=(3-a)/2, (I)<?in-line-formulae description="In-line Formulae" end="tail"?> the specific BET surface area of which is between 30 and 400 m<SUP>2</SUP>/g, the average particle size (by mass) d<SUB>w </SUB>of which is between 20 and 400 nm and the disagglomeration rate, alpha, of which, measured via an ultrasound disagglomeration test at 100% power of a 600-watt ultrasonic probe, is greater than 5x10<SUP>-3 </SUP>mum<SUP>-1</SUP>/s is provided. A rubber composition suitable for the manufacture of tires comprising said aluminum-based filler as reinforcing filler.
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