Inorganic foams
US4547469A · kind A · utility
14Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 25, 1983 |
| Grant date | Oct 15, 1985 |
| Priority date | — |
| Expiry date | May 25, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B38/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Strong rigid foams comprising one or more layer minerals useful as insulation and fire-protection materials contain cells of which the mean diameter is below 60 microns, 90% have a diameter below 100 microns and substantially all are of diameter below 150 microns and are made by gasifying an aqueous suspension of the layer mineral(s) to produce a wet foam or froth containing bubbles of gas of which the diameters are as stated above and removing water from the wet foam or froth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.