| abstract |
The present invention relates to a use of anhydrous iron (II) orthophosphate of the general formula Fe 3 (PO 4 ) 2 or water-free iron (II) metal orthophosphate, iron (II) metal phosphonate, iron (II) metal Pyrophosphate or ferrous metal metaphosphate of the general formula Fe a Met b (PO c ) d , where a is a number from 1 to 5, b is a number from> 0 to 5, c is a number of 2.5 to 5, d is a number from 0.5 to 3 and wherein Met represents one or more metals selected from the group consisting of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, the transition metals (d-block), in particular Sc, Y, La, Ti, Zr, Hf, Nb, Ta, Cr, Mo, W, Mn, Cu, Zn, Co, Ni, Ag, Au, the metals and semi-metals of the third, fourth and fifth main group, in particular B, Al, Ga, In, Si, Sn, Sb, Bi, and the lanthanides, or combinations of the aforementioned phosphates as an absorber for electromagnetic radiation, wherein the absorber in a carrier material fin vert rushes or is dissolved. |