A kind of high temperature resistant formaldehyde-free fluorescent pigment emulsion and preparation method thereof

Abstract

The invention provides a fluorescent pigment emulsion and a preparation method thereof. The fluorescent pigment emulsion comprises the following components in percentage by weight: 100% of polymerizable monomer, 0.5-10% of emulsifier, 0.01-10% of initiator, 0.001-20% of colorant and 50-500% of deionized water. The polymerizable monomer comprises the following components in percentage by weight: 1-30% of methyl acrylate, 1-30% of methyl methacrylate, 0-10% of acrylic acid, 0-10% of methacrylic acid, 30-50% of styrene, 2-15% of acrylonitrile, 0.5-1.5% of 2-acrylamido-2-methyl propane sulfonic acid and 0.2-1% of triallyl isocyanurate. The fluorescent pigment provided by the invention can withstand the 220-DEG C five-minute baking technique; the pigment does not discolor or fade, and has favorable fastness; and the product can be used for building paints, printing packaging and textile printing.

Description

technical field [0001] The invention belongs to the field of organic pigments, coatings and textile printing color pastes, and in particular relates to an environment-friendly, formaldehyde-free, high-temperature-resistant fluorescent pigment emulsion and a preparation method thereof. Background technique [0002] At present, there are three main methods for the preparation of fluorescent pigment emulsions: block resin pulverization-emulsification method, suspension polymerization-emulsification method, and emulsion polymerization method. Among them, the bulk resin pulverization-emulsification method is used to prepare fluorescent pigment emulsions, first of all fluorescent pigments must be prepared, and the preparation of fluorescent pigments is to wrap fluorescent dyes (usually basic dyes) with carrier resins and then pulverize them to make them insoluble in The colored fluorescent pigment particles in water, and then the fluorescent pigment, dispersant, emulsifier, water ...

AI Technical Summary

Problems solved by technology

The fluorescent pigment emulsion prepared by this method is bright in color, but its light fastness and high temperature resistance are poor

[0008] As can be seen from the above, at present, in the process of preparing fluorescent pigment emulsion by emulsion polymerization, since the polymerized monomers adopted are only monofunctional monomers containing a carbon-carbon double bond (C=C), the prepared ones for wrapping The resin of the fluorescent dye is a linear macromolecule, and its pigment latex particles are thermoplastic resins, so the high temperature resistance is poor. When the baking temperature is higher than 120°C, the resin is easy to deform and melt, and the wrapped fluorescent dye will be released again. Reduce fluorescence efficiency, resulting in poor sunlight resistance and high temperature easy to change color of pigments

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