Vermiculite dispersions and method of preparing same
US4655842A · kind A · utility
19Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1985 |
| Grant date | Apr 7, 1987 |
| Priority date | — |
| Expiry date | Aug 12, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B14/208
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Stable vermiculite dispersions which are substantially free of settling and a method of preparing same are provided. The dispersions are obtained by treating the vermiculite platelets of which the dispersion is comprised with citrate anion. The citrate anion functions as a swelling agent for the vermiculite and enhances the rate and extent of swelling in an aqueous medium. The swollen vermiculite is delaminated by shearing to provide the inventive dispersions, which comprise a suspension of the delaminated platelets and citrate anion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.