| abstract |
Provided is an inorganic particle dispersion, in particular, an inorganic particle dispersion for cosmetics, said inorganic particle dispersion containing a novel block copolymer capable of improving the dispersibility of inorganic particles. The inorganic particle dispersion, in particular, inorganic particle dispersion for cosmetics according to the present invention comprises a dispersion medium, inorganic particles dispersed in the dispersion medium and a block copolymer having a hydrophobic segment and a hydrophilic segment, wherein the hydrophobic segment has a monomer unit formed of at least one kind of monomer selected from formula 1 and formula 2, the hydrophilic segment is at least partly adsorbed by the inorganic particles, and the hydrophobic segment is arranged outside of the inorganic particles. In formula 1, R1 represents hydrogen or a methyl group, R2 represents hydrogen or fluorine, m is an integer of 0-6, and n is an integer of 1-15. In formula 2, R1 represents hydrogen or a methyl group, R3 and R4 independently represent an alkyl group having 1-6 carbon atoms, m is an integer of 1-6, and p is an integer of 5-70. |