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

C - Chemistry, Metallurgy

04

B

25/142

C04B 35/64 (2006.01) B01D 39/20 (2006.01) B01J 20/02 (2006.01) B01J 20/28 (2006.01) B01J 37/00 (2006.01) C04B 38/06 (2006.01)

Patent

CA 1158424

TO2-25222C/YN/81 ABSTRACT OF THE DISCLOSURE 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 result- ing 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.

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