Colloid systems and wetting agents; subcombinations thereof; pro – Continuous liquid or supercritical phase: colloid systems;... – Having discontinuous gas or vapor phase – e.g. – foam:
Reexamination Certificate
2009-02-02
2011-10-25
Choi, Ling (Department: 1763)
Colloid systems and wetting agents; subcombinations thereof; pro
Continuous liquid or supercritical phase: colloid systems;...
Having discontinuous gas or vapor phase, e.g., foam:
C501S080000, C501S084000
Reexamination Certificate
active
08044105
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.
REFERENCES:
patent: 5512169 (1996-04-01), Williams
patent: 2004/0117015 (2004-06-01), Biscup
patent: 2317887 (1998-04-01), None
patent: WO 95/30641 (1995-11-01), None
“Oligomers of Human Serum Modified by Glutaraldehyde”, Chemistry of Natural Compounds, Dec. 2004.
LeBaron Peter C.
Paquette Thomas M.
Choi Ling
Dow Global Technologies LLC
Wang Chun-Cheng
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