| abstract |
This invention relates to a powder composition comprising a siliconenrepresented by the following formula (1) comprising an alcoholic hydroxyl group,nand a powder, to an oil-based powder composition formed by dispersing this powderncomposition in an oil, and to a cosmetic material containing these materials.n R 1 a R 2 b SiO (4-a-b)/2 n where, in formula (1), R 1 are identical or different organic groups selected fromnalkyl groups, aryl, aralkyl or fluorinated alkyl groups having 1-30 carbon atoms, R 2 nis a substituent having one or more alcoholic hydroxy groups, and a, b are integersnsatisfying the relations:n 1.0≦a≦2.5, 0.001≦b≦1, 1.5≦a+b≦2.6. n The powder composition of this invention has little cohesion, excellentndispersibility and excellent stability over time as an oil-based powder composition.nTherefore, cosmetics using these materials have excellent stability in use, andnexcellent stability over time. |