NEW DAYLIGHT FLUORESCENT PIGMENTS WHICH CONTAIN AN ORGANIC FLUORESCENT DYESTUFF AND AS RESIN A CONDENSATION RESIN, CONSISTING OF COPOLYMERIZATES OF OLEFINICALLY UNSATURATED COMPOUNDS CONTAINING EPOXY GROUPS AND HENCE COPOLYMERIZABLE VINYL COMPOUNDS WHICH ARE CROSS-LINKED WITH DI- OR POLYCARBOXYLIC ACIDS OR THE ANYDRIDES THEREOF AND A PROCESS FOR THEIR PREPARATION WHICH COMPRISES INCORPORATING THE ORGANIC FLURRESCENT DYESTUFF INTO THE CONDENSATION RESIN. THESE DAYLIGHT FLURESCENT PIGMENTS MAY BE EMPLOYED FOR PREPARING FLURESCENT PAINTS, FOR EXAMPLE AIR-AIR-DRYING LACQUERS ON THE BASIS OF AKYL RESIN OR PHYSICALLY DRYING LACQUERS ON THE BASIS OF ACRYLIC RESINS, AS WELL AS FOR PREPARING FLURESCENT PRINTING INKS SUCH AS INKS FOR SCREEN PRINTING INTAGLIO PRINTING, BOOK PRINTING AND OFFSET-LITHO PRINTING. DE TO THEIR HIGH RESISTANCE TO HEAT, THEY ARE PARTICULARLY SUITABLE FOR FLUORESCENT DYEING OF PLASTICS AND ENAMELS.