Water-based ceramic foams showing improved gel strength
US8044105B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Feb 2, 2009 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Jan 4, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B38/0045
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of preparing a gelled ceramic-based foam comprising forming a slurry comprising at least water, a ceramic, albumin and an aldehyde, such that the ratio of the aldehyde to the albumin is from about 60:1 to about 200:1, and frothing the slurry, such that the albumin polymerizes to form a gelled ceramic-based foam. The foam shows improved capability to resist collapse during any subsequent handling, drying to greenware, or firing steps. This enables simplified and more economical production of highly porous ceramics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.