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US 5,935,515 AGranted
Process for the production of polychrome ceramic shaped parts
AssigneeBASF SE
InventorsWerner Hesse, Birgit Tommuscheit
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Abstract
In a process for producing polychrome ceramic shaped parts, at least two granulates formed from ceramic powder, binder and color-producing particles are shaped, subjected to binder removal and sintered. The granulates are formed from different color-producing particles and/or different concentrations of the same color-producing particles.
Claims16
A process for producing polychrome shaped parts, comprising the steps of
- shaping at least two granulates comprising ceramic powder, a polyacetal binder, and color producing particles;
- removing the binder of said granulates by treating said granulates in a gaseous atmosphere containing acid or boron trifluoride;
- sintering said granulates after binder removal;
- wherein the granulates contain different color-producing particles and/or different concetrations of the same color-producing particles and wherein, in at least one of the granulates, the polyacetal is present in a proportion of from 30% to 60% by volume of the granulate.
1 more element
Dependencies are inferred from the claim text.