Process for the preparation of clay mineral-containing gels with stabilized structure and reversible water absorption ability
US4600744A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1984 |
| Grant date | Jul 15, 1986 |
| Priority date | — |
| Expiry date | Oct 25, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/145
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for the preparation of clay mineral-containing gels with stabilized structure and reversible water absorption ability. According to the invention an aqueous suspension containing a thixotropic, activated, swelling clay mineral of three-layer structure and/or a swelling chain silicate is treated with a water soluble polymer capable of reacting with the clay mineral and/or chain silicate, the clay mineral:polymer:water ratios are determined at which the resistance of medium of the resulting suspension is at least ten times higher than that of the initial, polymer-free suspension, and then the components are reacted with each other in the pre-determined ratios.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.