Sorptive clay composition and method of manufacture
US4339352A · kind A · utility
2Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1981 |
| Grant date | Jul 13, 1982 |
| Priority date | — |
| Expiry date | Feb 25, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J20/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A novel sorptive clay product is formed by treating attapulgite clay with sodium silicate and heating to expel moisture such that the product contains about 7-20% total volatile matter. Acid may also be added such that the pH of aqueous slurry is in the range 5 to 10. This sorptive clay product exhibits water and oil absorption and resistance to wet breakdown equivalent to higher-temperature activated attapulgite products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.