| abstract |
To provide an inorganic particle dispersion liquid containing a novel block copolymer capable of improving the dispersibility of inorganic particles, particularly an inorganic particle dispersion liquid for cosmetics. The inorganic particle dispersion liquid of the present invention, especially the inorganic particle dispersion liquid for cosmetic materials, comprises: a dispersion medium; inorganic particles dispersed in the dispersion medium; and a block copolymer comprising a hydrophobic segment and a hydrophilic segment, The hydrophobic segment includes a monomer unit composed of at least one monomer selected from the following formulae 1 and 2, at least a part of the hydrophilic segment is adsorbed to the inorganic particles, and the hydrophobic chain The segments are oriented outward with respect to the inorganic particles. In Formula 1, R 1 is hydrogen or methyl, R 2 is hydrogen or fluorine, m is an integer from 0 to 6, and n is an integer from 1 to 15. In Formula 2 wherein, R 1 is hydrogen or methyl, R 3 and R 4 are each independently an alkyl group having 1 to 6 carbon atoms, m is an integer of 1 to 6, and p is an integer of 5 to 70. |