The synthesis of binary zinc(II)-nickel(II) cyclo-tetraphosphates as new special pigments

The synthesis of new inorganic pigments has been investigated, with the goa l of preparing heat stable and anticorrosive pigments. The synthesis of the title pigments is based on temperature calcination of the starting materia ls, and the optimum reaction conditions for this process have been assessed . The pigments have been evaluated from the standpoint of their structure, colour hue and ability to dye ceramic glazes. New binary condensed phosphat es were synthesised based on results of thermal analyses. These new compoun ds were developed with environmentally friendly special pigments in mind. ( C) 2000 Elsevier Science Ltd. All rights reserved.