Precipitated silica beads
US6290924A · kind A · utility
11Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 17, 2000 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Apr 17, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/90
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Essentially spherical precipitated silica beads, well adapted for the reinforcement of elastomeric matrices, have a mean particle size of at least 80 .mu.m, a BET specific surface area ranging from 60 to 130 m.sup.2 /g, a fill density in packed state ranging from 0.28 to 0.37, and a total pore volume ranging from 1.6 to 3.3 cm.sup.3 /g.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.