Molding of ceramic materials
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United States of America Patent
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Jan 31, 1989
Issued Date -
N/A
app pub date -
Jul 28, 1987
filing date -
Dec 14, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A porous, open-pore, hardened, plastic composition suitable as a replacement for plaster for use as a mold in shaping a ceramic article by any of various ceramic shaping methods prepared by subjecting a water-in-oil emulsion to hardening, without breaking the emulsion, and then drying the hardened product, the emulsion having a viscosity of 1600-5000 cP and/or containing 2-12% by weight of an alkali-reactive, water-binding material, the water phase/oil phase ratio providing an open pore volume in the composition equivalent to 10-60% of the total volume of the composition.
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