Plastic and nonmetallic article shaping or treating: processes – Reactive gas or vapor treatment of work
Patent
1984-02-10
1988-02-16
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Reactive gas or vapor treatment of work
264 63, B28B 2152, C04B 4002
Patent
active
047253916
ABSTRACT:
A method is disclosed for extruding thin-walled ceramic bodies. The method involves mixing into a homogenized batch a granular ceramic, a binder, a soluble oxidizing agent and a matrix precursor in amounts sufficient to provide a substantially water-free extrudable mixture. The batch is extruded into an atmosphere containing SO.sub.2 which permeates the extrudate and reacts with the oxidizing agent to form SO.sub.3 in situ. The SO.sub.3 catalyzes polymerization of the furfuryl alcohol to a rigid solid which prevents deformation of the extrudate.
REFERENCES:
patent: 2950503 (1960-08-01), McRae
patent: 3789097 (1974-01-01), Beck
patent: 3879339 (1975-04-01), Richard
patent: 3899554 (1975-08-01), Kaiser
Bardhan Pronob
Golino Carlo M.
Gorges Larry D.
Morse Sandra L.
Corning Glass Works
Lorin Hubert C.
Silbaugh Jan H.
Simmons, Jr. William J.
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