Clay-containing mixture or blend capable of forming a moisture resistant gel, and use of that mixture and blend
US7026385B2 · kind B2 · utility
7Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2001 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Mar 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a clay-containing mixture or blend capable of forming a moisture resistant gel, which comprises a powdered or ground smectite and/or a smectite-containing natural rock and at least 0.8–10% by weight, calculated for the smectite content, of an at least partially water-soluble and/or water swellable polymer and optionally at least 0.5% by weight of a solid activating agent. Such a mixture may also additionally comprise as a diluting agent more than 0.5% by weight of one or more solid inert filler(s); this diluted version is termed in the specification as a blend.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.