Binder component for a feedstock compound for use in a shaping and sintering process, particulate feedstock compound, and shaping and sintering process

Abstract

A binder component for a feedstock compound for use in a shaping and sintering process comprises b-i) 3 to 70% by volume of at least one first thermoplastic and/or wax-type material, and b-li) 30 to 97% by volume of at least one second thermoplastic and/or wax-type material, based on the total volume of the binder component. The first thermoplastic and/or wax-type material and the second thermoplastic and/or wax-type material differ in at least one property which property is selected from (1) solubility in a solvent, (2) degradability induced by heat and/or a reactant, and (3) volatility. The first thermoplastic and/or wax-type material is less soluble, less degradable or less volatile than the second thermoplastic and/or wax-type material. Tcross is below 120° C., wherein Tcross is the temperature at the intersection between the storage modulus G′ curve and the loss modulus G″ curve in a dynamic viscoelasticity measurement of the binder component. The feedstock compound containing the binder component and non-organic sinterable particles is used in an additive manufacturing process, an injection molding process, a pressing process or a casting process.

Dependencies are inferred from the claim text.