| abstract |
PROBLEM TO BE SOLVED: To provide a colorant-containing resin powder that can be blended stably and safely in cosmetics, has a good feeling in use, etc., and can be easily produced. SOLUTION: The number average particle diameter is 10 to 200 nm on the surface of colored mother particles having a weight average particle diameter of 0.2 to 100 μm and containing 0.1 to 80 mass% of a colorant in a thermoplastic resin. Colorant-containing resin powder with fine particles attached. It is preferable that the thermoplastic resin is a thermoplastic acrylic resin mainly composed of alkyl methacrylate, methacrylic acid, and alkyl acrylate, and having a melting point of 60 to 150 ° C. [Selection figure] None |