Dispersion, coating composition, and recording medium containing silica mixture
US6861112B2 · kind B2 · utility
7Cited by
28References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2002 |
| Grant date | Mar 1, 2005 |
| Priority date | — |
| Expiry date | Nov 15, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/36
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides an aqueous dispersion comprising fumed silica particles, colloidal silica particles, and water. The fumed silica particles have a BET surface area of about 70 to about 140 m2/g, and the colloidal silica particles have a BET surface area of about 110 to about 150 m2/g. Also, the total amount of silica in the dispersion is about 35% to about 60% by weight, and the fumed silica particles comprise about 25% to about 80% by weight of the total amount of silica in the dispersion. The invention also provides a coating composition and a recording medium incorporating the inventive dispersion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.