Nano fluorescent latex pigment with high fluorescence intensity and high stability and preparation method therefor

Abstract

Disclosed are a nano fluorescent latex pigment with high fluorescent intensity and high stability and a preparation method therefor in the technical field of fluorescent pigments. An oil phase and an aqueous phase are included. The oil phase includes 0.8 to 0.9 wt % of fluorescent dye, 40 to 45 wt % of polymer monomer, 0.2 to 0.22 wt % of co-emulsifier, and 0.2 to 0.22 wt % of initiator. The aqueous phase includes 5 to 7 wt % of mixed emulsifier, and 0 to 0.3 wt % of sodium bicarbonate, with the balance being water. The preparation method for the nano fluorescent latex pigment includes four steps, namely, oil phase preparation, aqueous phase preparation, mini-emulsion preparation, and mini-emulsion polymerization. In the present disclosure, a nano fluorescent latex pigment with high fluorescence intensity, small particle size, uniform distribution, and good dispersion stability is successfully prepared, thereby expanding the application range of nano fluorescent latex pigments.

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