Reinforcing aluminum-based filler and rubber composition comprising such a filler
US7425313B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2005 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Apr 11, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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):Al(OH)aOb, with 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 disagglomeration rate, α, of which, measured via an ultrasound disagglomeration test at 100% power of a 600-watt ultrasonic probe, is greater than 5×10−3 μm−1/s is provided. A rubber composition suitable for the manufacture of tires comprising said aluminum-based filler as reinforcing filler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.