Compositions: ceramic – Ceramic compositions – Pore-forming
Patent
1993-12-16
1995-01-24
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Pore-forming
501 80, 501 82, 264 43, 264 44, C04B 3806
Patent
active
053842901
ABSTRACT:
Ceramic beads having a bimodal pore distribution are prepared by a process involving a) formation of a ceramic particle slurry, b) adding a foamable prepolymer to the slurry to form a mixture, c) dispersing the mixture as beads in a second liquid, d) polymerizing and foaming the prepolymer, e) recovering the beads and firing them to remove the polymer and bond the ceramic particles. The beads can optionally be joined by sintering. Beads with a monodal pore distribution can be made by using a non-foaming prepolymer.
REFERENCES:
patent: 3833386 (1974-09-01), Wood et al.
patent: 5082607 (1992-01-01), Tange et al.
patent: 5108956 (1992-04-01), Inoue et al.
Bell Mark L.
Capria Mary Ann
Jones Deborah
W. R. Grace & Co.,-Conn.
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