| abstract |
PROBLEM TO BE SOLVED: To provide high-tone, nano-sized hydrophilic colored resin fine particles colored with an oil-soluble dye, a colored aqueous emulsion composition containing the fine particles, and a simple production method thereof. is there. SOLUTION: An oil-soluble dye is included, and its outer surface layer and / or Or an average particle diameter of 10 to 6 which is also deposited and coated on a layer in the vicinity thereof The polymerizable monomer, a crosslinking agent of a polyfunctional monomer, a primary emulsifier, an oil-soluble dye, and a dye hydrophilic auxiliary agent are added, emulsified, and polymerized to the high-tone hydrophilic colored resin fine particles of 00 nm, The precursor of the first emulsion containing the precursor particles containing the oil-soluble dye, the reactive emulsifier, the oil-soluble dye, the dye-hydrophilizing aid, and water are added, stirred, and heated for a predetermined time to prepare a precursor. An emulsion polymerization method by a dye two-stage fixing method comprising a second stage containing a secondary emulsion containing colored resin fine particles deposited and coated on the outer surface layer of body particles and / or a layer in the vicinity thereof, The dye is fixed to the fine resin particles simply and efficiently. |