Method for formation of subsurface barriers using viscous colloids
US5836390A · kind A · utility
42Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1996 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Nov 7, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D2300/0004
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for formation of subsurface barriers using viscous liquids where a viscous liquid solidifies at a controlled rate after injection into soil and forms impermeable isolation of the material enclosed within the subsurface barriers. The viscous liquid is selected from the group consisting of polybutenes, polysilotanes, colloidal silica and modified colloidal silica of which solidification is controlled by gelling, cooling or cross-linking. Solidification timing is controlled by dilution, addition of brines, coating with alumina, stabilization with various agents and by temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.