Liquefaction of highly loaded particulate suspensions
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United States of America Patent
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Mar 28, 1989
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N/A
app pub date -
Apr 25, 1986
filing date -
Apr 25, 1986
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Expired
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Abstract
Suspensions of ceramic or metallic colloidal particles having a high volume fraction (greater than about 55 vol. %) solid particles are provided in a pourable form. The pourable suspension includes at least about 55 vol. % ceramic or metallic colloidal particles, an aqueous vehicle, and an acrylic acid-based polymeric polyelectrolytic dispersant. Such suspensions can be prepared by mixing the colloidal particles in a staged order of addition and under a high shear rate with the other components. The suspensions are suitable for making ceramic or metallic articles, and can exhibit a low viscosity.
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