Composition for 3d printing ceramic and/or metallic shaped bodies

A composition suitable for 3D printing, said composition being in the form of a filament and comprising:

• a) from 40% to 60% (v/v) of a metal and/or ceramic powder;
• b) an organic binding phase comprising two parts:
• b1) from 1% to 59% (v/v) of at least one thermoplastic compound, the percentages (v/v) being expressed by volume relative to the total volume of the composition;
• and
• b2) at least one volatile organic compound which has a vapor pressure at 50° C., ranging from more than 0 bar to 0.05 bar;
• wherein the amount of the at least one volatile organic compound ranges from more than 0.5% to 40% (v/v) by volume relative to the total volume of the composition;
• wherein the at least one thermoplastic compound consists of at least one poly(ethylene-vinyl acetate) (PEVA);
• or comprises at least one PEVA with at least one further thermoplastic compound selected from:
• waxes of parabens, paraffin, esters, and/or fatty alcohols;
• and thermoplastic homopolymers and/or copolymers of polyolefins, polyacrylates, polymethacrylates, poly(alkylene glycol)s, polyamides, polyvinylics, polystyrenes polyacetals, and polyesters,;
• wherein the at least one volatile organic compound is selected from:
• aromatic compounds, essential oils and mixtures thereof.