Patent ID: 6610261
Filing Date: 2003-08-26
Classification: B60C,B82Y,C01F,C01P,C08K,C09C,G01N

Abstract:
A reinforcing aluminum-based filler for diene rubber compositions comprising an aluminum (oxide-)hydroxide corresponding, with the exception of any impurities and water of hydration, to Formula I, wherein a and b are real numbers:Al (OH)aOb, where 0<a&lE;3 and b=(3âˆ’a)/2,â€ƒâ€ƒ(I) the specific BET surface area of which is between 30 and 400 m2/g, the average particle size (by mass) dw of which is between 20 and 400 nm and the ultrasound disagglomeration rate, &agr;, is greater than 5Ã—10âˆ’3 &mgr;mâˆ’1/s, wherein the disagglomeration rate is measured via an ultrasound disagglomeration test at 100% power of a 600 watt ultrasonic probe.