USE OF FE(II) COMPOUNDS WHICH ARE FREE FROM WATER OF CRYSTALLISATION AS RADIATION ABSORBER

• Main Authors: Joachim ADOLF, Rüdiger WISSEMBORSKI, Franziska WELSCH-PAPENBREER, Rainer SCHNEE, Christian LITTERSCHEID
• Format: Patent
• Language: English; Spanish
• Published: 21.11.2019
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The invention relates to a use of iron(II) orthophosphate of the general formula Fe3(PO4)2 which is free from water of crystallisation or iron(II) metal-orthophosphate, iron(II) metal-phosphonate, iron (ll) metal-pyrophosphate, iron(II) metal-metaphosphate of general formula FeaMetb(POc)dFe, which are free from water of crystallisation, wherein a represents a number from 1 to 5, b represents a number from >0 to 5, c represents a number from 2.5 to 5, d represents a number from 0.5 to 3 and Met represents one or more metals, selected from the group consisting of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, 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 groups, in particular B, AI, Ga, In, Si, Sn, Sb, Bi, and lanthanoids, or combinations of the mentioned phosphates as an absorber for electromagnetic radiation, wherein the absorber is finely distributed or is released into the support material. La presente invención se refiere al uso de ortofosfato de hierro (II), libre de agua de cristalización, de fórmula general Fe3 (PO4)2, u ortofosfato de hierro (II) metal, fosfonato de hierro (II) metal, pirofosfato de hierro (II) metal o metafosfato de hierro (II) metal, libre de agua de cristalización, de la fórmula general FeaMetb(POc)d, en donde a es un número de 1 hasta 5, b es un número de >0 hasta 5, c es un número de 2,5 hasta 5, d es un número de 0,5 hasta 3 y Met representa uno o más metales seleccionados del grupo que consiste de Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, metales de transición (bloque d), en particular Sc, Y, La, Ti, Zr, Hf, Nb, Ta, Cr, Mo, W, Mn, Cu, Zn, Co, Ni, Ag, Au, metales y semimetales del tercer, cuarto y quinto grupo principal, particularmente B, Al, Ga, In, Si, Sn, Sb, Bi, y latanoides o combinaciones de los fosfatos mencionados más arriba, como absorbentes de radiación electromagnética, estado el absorbente distribuido finamente o disuelto en un material de soporte.