Thermosetting formaldehyde-free fluorescent pigment powder and preparation method thereof

Abstract

The invention relates to a thermosetting formaldehyde-free fluorescent pigment powder and a preparation method thereof, and belongs to the field of organic pigments. The thermosetting formaldehyde-free fluorescent pigment powder is prepared by suspension polymerization of monomers and a basic fluorescent dye in a reaction kettle and filter pressing. Dispersant emulsifiers include polyvinyl alcohol 1750 and sodium dodecyl benzene sulfonate, and the thermosetting formaldehyde-free fluorescent pigment powder also includes an initiator ammonium persulfate, a colorant and deionized water. The obtained fluorescent pigment is microsphere powder with uniform particle size distribution, uniform particle shapes and excellent high temperature resistance and solvent resistance, can be used for plastics, plastic cement, textile printing, architectural coatings and printing and packaging, and can withstand a five minute injection process at 300 DEG C; and the pigment does not change color, does not fade, and does not move.

Description

technical field [0001] The invention belongs to the field of organic pigments, plastics and textile printing pastes, and relates to an environment-friendly, formaldehyde-free and high-temperature-resistant (temperature-resistant higher than 300°C) fluorescent pigment powder and a preparation method thereof. technical background [0002] At present, the preparation of fluorescent pigment powder is mainly to use resin to wrap fluorescent dye, first to prepare colored resin, and then to obtain fluorescent pigment through pulverization and ultrafine pulverization. The resins used to wrap fluorescent dyes are generally melamine resins, polyamide resins, polyester resins, polyester amide resins and polyacrylate resins, etc., for example: US3922232 introduces a polyester resin wrapped fluorescent dyes to prepare colored polyester resin, and then pulverize the method for preparing fluorescent pigments; US5236621 introduces a method for preparing fluorescent pigments by using polyami...

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Problems solved by technology

[0004] In view of the disadvantages of the prior art fluorescent pigment powders, such as complex preparation process, large dust in the production process, irregular product particles and poor temperature resistance, the purpose of the present invention is to provide a thermosetting formaldehyde-free fluorescent pigment powder with uniform and regular particle size distribution , Good heat resistance, can withstand the injection molding process at 300°C for five minutes, the pigment does not change color, fade, or migrate

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