PURPOSE: To obtain a fluorescent pigment having high luminous intensity and exhibiting favorable technical characteristics in application such as high light- fastness and small migration trend by comprising a particular non-polar polymer matrix and incorporating thereinto a particular non-polar fluorescent dye.
CONSTITUTION: A fluorescent pigment is obtained by comprising a non-polar polymer matrix having an average particle diameter of 8 to 16 μm, selected from the group consisting of a polymethyl methacrylate, a polystyrene, a polystyrene modified with a polybutadiene, a polycarbonate, a polyvinyl chloride and a polyamide, and incorporating thereinto one or several kinds of non-polar fluorescent dyes from coumarin- or perylene-series (e.g. coumarin dye of formula I, a perylene dye of formula II, etc.). The fluorescent pigment has high luminous intensity and exhibits favorable technical characteristics in application, for example, high light-fastness and small migration trend.
BUERUNAA OSUTAATAAKU
GIYUNTAA ZEIBORUTO
