Process for producing metallic or ceramic shaped bodies

A process for producing a metallic or ceramic shaped body from a thermoplastic material comprising

• A) 40 to 65% by volume of at least one inorganic sinterable powder A
• B) 35 to 60% by volume of a mixture of
• B1) 50 to 95% by weight of one or more polyoxymethylene homo- or copolymers;
• B2) 5 to 50% by weight of a polymer homogeneously dissolved in B1) or dispersed in B1) with a mean particle size of less than 1 μm,
• as a binder, and
• C) 0 to 5% by volume of a dispersing aid,
• where the sum of components A), B) and C) adds up to 100% by volume,
• by injection molding or extrusion to give a green body, removing the binder and sintering, which comprises removing the binder by
• a) treating the molding with a solvent which extracts the binder component B2) from the molding and in which the binder component B1) is insoluble,
• b) then removing the solvent from the molding by drying, and
• c) then treating the molding in an acid-containing atmosphere which removes the binder component B1 from the molding.