Composition for waterproofing silica-ceramic insulation bodies
US4814407A · kind A · utility
4Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1986 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Dec 22, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B41/4922
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
There is provided a method and compositions for improving the resistance to absorption of water by a porous rigid sintered and pressed block of short staple amorphous silica fiber by distributing within the pores of said block an alkylalkoxysilane or a fluoroalkylalkoxysilane which is substantially free of deleterious halide. Halide may be reduced by special purification techniques or by netralization in situ with acid scavanger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.