Microporous precipitated silica
US8114935B2 · kind B2 · utility
3Cited by
7References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 3, 2010 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | May 3, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/36
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Described herein is microporous precipitated silica having the following physico-chemical parameters: a CTAB surface area of 50 to 300 square meters/gram, a BET/CTAB ratio of ≧1.3, and a relative breadth γ of pore size distribution of ≦3.5. The precipitated silica can also have a Sears number of from 10 to 28 and a Sears number/CTAB ratio of ≦0.16. Also described herein are vulcanizable and vulcanized elastomer compositions, e.g., tires, containing the microporous precipitated silica.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.