Claims
- 1. 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≦3 and b=(3−a)/2, (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, α, is greater than 5×10−3 μm−1/s, wherein the disagglomeration rate is measured via an ultrasound disagglomeration test at 100% power of a 600 watt ultrasonic probe.
- 2. The filler of claim 1, wherein the BET surface area is between 50 and 350 m2/g.
- 3. The filler of claim 1, wherein the average particle size dw is between 30 and 200 nm.
- 4. The filler filler of claim 1, wherein the disagglomeration rate α is greater than 6×10−3 μm−1/s.
- 5. The filler of claim 1, comprising an aluminum (oxide)-hydroxide of Formula (I) which satisfies the relationship: 0<a<3.
- 6. The filler of claim 5, comprising an aluminum (oxide)-hydroxide of Formula (I) which satisfies the relationship: 0<a<2.
Priority Claims (1)
Number |
Date |
Country |
Kind |
97 15128 |
Nov 1997 |
FR |
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Parent Case Info
The present application is a continuation of PCT/EP98/07680, filed Nov. 27, 1998, now WO 99/28376.
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Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/EP98/07680 |
Nov 1998 |
US |
Child |
09/583653 |
|
US |