SURFACE TREATMENT OF LUMINOUS FLUORESCENT PIGMENT, SURFACE-TREATED LUMINOUS FLUORESCENT PIGMENT AND LUMINOUS FLUORESCENT COATING MATERIAL USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a luminous fluorescent pigment without deterioration of brightness by improving the resistance to water of the fluorescent pigment itself. ;SOLUTION: This compound has the formula: M_1-XAl₂O_4-X (-0.33X0.60). A compound having a metallic element selected from the group consisting of Ca, Sr and Ba is used as a parent crystal to prepare the objective luminous fluorescent pigment. The pigment particles are coated with a silica on their surfaces. The coated pigment particles are mixed to a clear resin varnish, for example, an acrylic resin varnish.;COPYRIGHT: (C)1997,JPO