Themoplastic molding compounds
AssigneeBayer Aktiengesellschaft
InventorJohn Huggins
Life of this patent
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Abstract
Thermoplastic molding compounds containing at least one coated ceramic powder and at least one thermoplastic binder, to a process for preparing coated ceramic powders and to a process for producing molded components from ceramic powders. The ceramic powder is coated with at least one ionic, non-ionic or zwitterionic dispersant based on an organic or organometallic compound.
Claims9
In a themoplastic molding compound containing at least one coated ceramic powder and at least one thermoplastic binder, the improvement wherein the ceramic powder is coated with at least one dispersant comprising a monovalent cation salt of an acid selected from the group consisting of a phosphoric acid ester, a phosphonocarboxylic acid ester and a phosphonic acid.
In the production of a ceramic molded component by mixing at least one ceramic powder with a thermoplastic binder, (thermo)plastically molding the resulting compound and sintering, the improvement which comprises, before mixing the ceramic powder with the thermoplastic binder, treating the ceramic powder with at least one dispersant comprising a monovalent cation salt of an acid selected from the group consisting of
- a phosphoric acid ester,
- a phosphonocarboxylic acid ester, and
- a phosphonic acid.
Dependencies are inferred from the claim text.