Pillared interlayered clay products
US4271043A · kind A · utility
55Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1979 |
| Grant date | Jun 2, 1981 |
| Priority date | — |
| Expiry date | Oct 1, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Pillared interlayered clays are reacted with a base such as ammonium hydroxide to increase the ion exchange capacity thereof. The pillared interlayered clays are prepared by reacting a smectite clay, such as bentonite, with a metal complex polymer, such as chlorhydrol, and calcining the resulting product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.