ALUMINUM PHOSPHATE, ALUMINUM POLYPHOSPHATE AND AUMINUM METAPHOSPHATE PARTICLES AND THEIR USE AS PIGMENT IN PAINT AND METHOD OF MAKING SAME

摘要

PPROBLEM TO BE SOLVED: To provide an aluminum phosphate powder containing hollow particles as an alternative of titanium dioxide. PSOLUTION: An aluminum phosphate composition comprising aluminum phosphate, aluminum polyphosphate, aluminum metaphosphate, or a mixture thereof is characterized by: when in a powder form, having particles some of which have at least one or more voids per particle; (a) when in a powder form, exhibiting two endothermic peaks in Differential Scanning Calorimetry between about 90C to about 250C; and further (b) when in powder form, having a dispersibility of at least 0.025 grams per 1.0 gram of water. PCOPYRIGHT: (C)2007,JPO&INPIT