Aqueous suspensions of precipitated silica with anionic dispersant and aluminum compound
US5418273A · kind A · utility
12Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 1993 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | Jan 7, 2013 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H19/58
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Stable aqueous suspensions of precipitated silica, well adopted as coatings for the papermaking industry, include an aqueous suspension of a slaked precipitated silica filter cake and an effective amount of a stabilizer therefor, which stabilizer contains (a) aluminum or an aluminum compound, and (b) an anionic dispersing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.