Process for the production of porous ceramic molded articles

Details Process for the production of porous ceramic molded articles Process for the production of porous ceramic molded articles

1983-02-22

1984-09-18

Lieberman, Paul

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Of inorganic materials

264 86, 501 1, B29H 720

Patent

active

044723326

ABSTRACT:
A process for the production of a porous ceramic mold is described, compsiging adding about 40 to 60 parts by weight of water to 100 parts by weight of a ceramic material, mixing the thus-formed ceramic slurry with about 20 to 40 parts by weight of a hydrophilic urethane prepolymer having a free isocyanate group content of from about 4% to 7% by weight, reacting and foaming the resulting mixture after the introduction thereof into a mold, drying the thus-formed foamed urethane molded article, and combusting very slowly and sintering the dried foamed urethane molded article to produce a porous ceramic molded article.

REFERENCES:
patent: 3793237 (1974-02-01), Watkinson
patent: 3833386 (1974-09-01), Wood et al.

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