Patent ID: 7285241

Claim:
A method of making a sintered body comprising one or more hard constituents in a binder phase by injection molding or extrusion technique comprising mixing by wet milling of powders forming the hard constituents and binder phase with a granulating agent to form a slurry, said granulating agent being an ethylene oxide polymer, wherein mixing forms a slurry; drying the slurry into a powder; mixing the dried powder with a binder system into a feedstock binder system being not miscible with said ethylene oxide polymer; molding said feedstock into a body of desired shape in an injection molding machine or extruder; debinding of the obtained body in two steps to form a part, the two steps comprising a first step of extraction and a second step of heating, said extraction step being conducted in an alcohol based solvent at a temperature of about 50-78° C., and sintering the part.