Method for preparing color fluorescent nanometer resin particle dispersion liquid

Abstract

The invention relates to a method for preparing color fluorescent nanometer resin particle dispersion liquid and aims at providing a preparation method with the advantages that concrete operation of experiments and scale production is convenient, the technical process is easy to control, the process stability is high, and the prepared color fluorescent nanometer resin particle has the effects that the particle size distribution is uniform, the glossiness is good, and meanwhile, better temperature resistance performance, sun-proof performance and acid-base resistance performance are realized. The method has the technical scheme that the method for preparing the color fluorescent nanometer resin particle dispersion liquid comprises the following steps of (1) polymerization medium initiating system preparation, (2) monomer emulsion system preparation and (3) polymerization reaction. According to the method for preparing the color fluorescent nanometer resin particle dispersion liquid, monomers in the step (2) are mixtures of drainable nonpolarity vinyl monomers, vinyl cyano monomers, polar vinyl monomers and sulfonic vinyl monomers, and the consumption of the monomers accounts for 20 to 50 percent of the weight of a monomer emulsion system.

Description

technical field [0001] The invention relates to the field of preparation of polymer materials, in particular to a method for preparing a dispersion liquid of colored fluorescent nanometer resin particles. Background technique [0002] Color fluorescent nano-resin particle dispersion belongs to a kind of polymer coloring material, which has fine and uniform particle size and bright coloring effect, and is very popular in the application of coatings, inks, printing and dyeing, plastics and other fields, and the products made with it are bright in color , are particularly noticeable. [0003] There are also many domestic and foreign literature reports on the preparation technology of colored fluorescent resin particles. [0004] Patents U.S.Pat.No 2,938,873 and U.S.Pat.No 3,116,256 describe the use of aminotriazine compounds and aromatic monosulfonamides with paraformaldehyde for bulk melt polycondensation, then compound fluorescent dyes, and finally prepare resin color blocks...

AI Technical Summary

Problems solved by technology

[0004] Patents U.S.Pat.No 2,938,873 and U.S.Pat.No 3,116,256 describe the use of aminotriazine compounds and aromatic monosulfonamides with paraformaldehyde for bulk melt polycondensation, then compound fluorescent dyes, and finally prepare resin color blocks by crushing and grinding technology; the technology is simple and easy to operate, but the average particle size of the product prepared by this technology is greater than 1.5 microns, the tinting strength is low, the light resistance is poor, the preparation process consumes time and energy, and the economic benefit is low

[0005] Patent British.Pat.No.822,709 describes the use of vinyl chloride and vinylidene chloride suspension copolymerization, adding fluorescent dyes, formic acid, ethanol and other raw materials to compound, and then crushing and grinding to prepare colored fluorescent colored particles; Simple, the exothermic effect is easy to control, but it is difficult to improve the coloring power of the product, the coloring effect is poor, and the product has poor light resistance

[0006] The patent U.S.Pat.No3,190,850 describes the use of styrene or ethyl acetate copolymerization, adding fluorescent dyes to compound, and at the same time, in order to prevent the dyes from being precipitated into the water phase, it is necessary to add tannic acid, molybdic acid or other mordants; the preparation The technical process is also easy to control, but the purity of the product is poor, and it is difficult to show a good daylight fluorescence effect

[0007] The patent U.S.Pat.No4,016,133 describes the use of styrene, acrylonitrile and glycidyl ester monomers, adding them to water, nonionic surfactants, and dye systems, and using a redox initiation system to carry out polymerization reactions to prepare fluorescent color resin particles ; There is no problem with this preparation technology in theory, but in actual operation, the demulsification gel phenomenon often occurs, the process is very unstable, and the color of the final product is also poor, which cannot reflect the fluorescence effect well

[0008] Patent CN200910098017.4 is a fluorescent emulsion product developed by us on the basis of referring to previous foreign literature. The patent describes in detail the use of styrene, acrylonitrile and methacrylate monomers, and the selection of suitable dispersants and additives , dyes and initiating system for the preparation of product particles; this technology can be used to prepare fluorescent emulsion products, but there are also some defects, the preparation process is not stable, and at the same time, due to the high proportion of emulsifier in the system, resulting in all The purity of the obtained product is poor, and the color is not bright enough, which limits its application in many fields