Method for granting to organic polymers the possibility of being detected

A method for providing a property to objects, or fragments thereof, manufactured using thermoplastic polymers, thermostable polymers or elastomers, wherein the property is being detectable or separable by magnetic, electromagnetic, electrical, X-ray or density-based processes, the method comprising preparing a mixture of at least two components:

• a) an organic polymer, selected from thermoplastic polymer, thermostable polymer or elastomer;
• b) an iron and silicon alloy which can contain other chemical elements in maximum proportions equal to the silicon content in the alloy, wherein the other chemical elements are selected from Cr, Ni, Co, Mo, Ti, Al, Mg, Ca, Sr, Ba, B, C, P, S, Cu, Zn, Zr, Nb, Sn, Ta, W, Bi, Ce, La, or rare earths and mixtures thereof, which has a silicon content between 5 and 50%, and which has a shape selected from spherical, prismatic, non-spherical, or non-prismatic,
• wherein the iron and silicon alloy is added to the organic polymer in amounts between 1.5% and 50%,
• wherein mixing of the thermoplastic polymer, thermostable polymer or elastomer and the iron and silicon alloy comprises:
• mixing solids with solids,
• mixing solids with molten polymers by melt mixing or extrusion,
• mixing powders with elastomeric polymers in a closed mixer by loading in a roller mill or in a roller calender, or
• mixing powders with liquids, wherein the liquid is an organic resin having one or two components, and
• wherein once the iron and silicon alloy has been added to the organic polymer, shape can be imparted to the final manufactured object.