Abstract: A fluorescent naphthalimide diester dye that is miscible or soluble in a variety of organic compounds such as, for example, mineral oil, polyalkylene glycols, polyolesters, motor oil, gear oil, synthetic oils, and polyalphaolefins, is provided. The fluorescent naphthalimide diester is useful as a tracer to detect leaks within a fluid systems such as, for example, refrigerant systems, transmission systems, and hydraulic systems. The fluorescent naphthalimide diester dye is comprised of a chromophore having the following structure: wherein: Z and Z′ are the same or different, and are esters attached to saturated or unsaturated linear or branched hydrocarbon chains attached thereto, having from 8 to 24 carbon atoms in length, preferably from 12 to 22 carbon atoms in length, most preferably from 16 to 20 carbon atoms in length, and from 1 to 4 double bonds, most preferably 2 to 3 double bonds.

Abstract: Novel water soluble toners for use in ink jet printers, which are stable in water, and which have an acid number of greater than about 175, are provided. The toner, which is preferably fluorescent, is comprised of a novel, cycloaliphatic, polyester dye carrier; and a dye, preferably a fluorescent dye. The invention also relates to an ink which preferably comprises: an humectant, water and a toner dissolved in the water, and a base. The ink preferably has a viscosity less than about 10 cps, preferably less than about 6 cps, most preferably less than about 4 cps. The invention also relates to ink jet cartridges, and ink jet printers, which contain such novel ink, and also to a novel fluorescent yellow dye, which is useful in the novel fluorescent toner and ink jet printer inks. The invention also relates to methods of making such dye, the polyester dye carrier, and the ink jet cartridge.

Abstract: The present invention provides ultraviolet curable or electron beam curable fluorescent inks and ink concentrates, which cure upon exposure to ultraviolet or electron beam radiation. The synthesis of the fluorescent ink and ink concentrates does not involve the use of volatile organic solvents, so removal of solvents is not necessary during the manufacturing process. The fluorescent inks and ink concentrates display minimal, consistent color shift when cured. The cured fluorescent inks and ink concentrates are solvent resistant, particularly to methyl ethyl ketone, methanol, nonane, and sec butyl alcohol. The fluorescent ink and ink concentrate is comprised of: from about 20 to 90%, preferably from about 30 to 70%, more preferably from about 30 to 60% by weight of an oligomer, which is either a formaldehyde oligomer or a cyclic-aliphatic oligomer; from about 0.

Abstract: The present invention provides a novel, non-formaldehyde thermoset fluorescent pigment which is useful to color plastics, particularly flexible vinyl, which is solvent resistant, particularly to acetone. Moreover, the pigment does not bleed in plastics. The pigment comprises a polymer matrix and a fluorescent dye. The polymer matrix has a molecular weight of greater than about 330, preferably greater than about 1000. Embodiments which lack the water insoluble resin, have a molecular weight greater than about 330, preferably greater than about 500. The polymer matrix contains: from about 15 to 50 mole percent, preferably 30 to 40 mole percent, of a carboxylate functional oligomer; 30 to 80 mole percent, preferably 50 to 60 mole percent, of a metal ion; and 0 to 40 mole percent, preferably about 1 to 40 mole percent, more preferably from 1 to 30 mole percent, most preferably from about 3 to 10 mole percent of a water insoluble resin.