Precipitated silica having improved morphological characteristics and process for the production thereof
US4590052A · kind A · utility
84Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1985 |
| Grant date | May 20, 1986 |
| Priority date | — |
| Expiry date | Apr 5, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/90
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A precipitated silica having improved morphological characteristics and a process for making precipitated silica. In the precipitated silica of the present invention, the ratio of DBP oil index/CTAB specific surface area is between: PA1 7 and 4 for a range of CTAB of between 50-100 m.sup.2 /g, PA1 4 and 2.5 for a range of CTAB of between 100-200 m.sup.2 /g, PA1 2.5 and 2 for a range of CTAB of between 200-250 m.sup.2 /g, PA1 2 and 1.5 for a range of CTAB of between 250-300 m.sup.2 /g, and PA1 1.5 and 1.2 for a range of CTAB of between 300-350 m.sup.2 /g.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.