BLACK COMPOSITE OXIDE PARTICLE, ITS PRODUCTION METHOD, BLACK SLURRY, BLACK PASTE, AND BLACK MATRIX

摘要

PPROBLEM TO BE SOLVED: To provide a material which, when used as a black pigment based on a metal oxide, is excellent in a degree of blackness, hue, dispersibility in the case of use for coating materials, and surface smoothness shown by a coating film made from a coating material containing it, and has a sharp primary particle size distribution in spite of being in a microparticulate form. PSOLUTION: The particulate black composite oxide particles comprise 60 to 80 mass% cobalt and 0.1 to 5 mass% manganese and has an average primary particle diameter of 0.05 to 0.3 μm (as measured by observation with a scanning electron microscope (SEM)). PCOPYRIGHT: (C)2008,JPO&INPIT