摘要 |
Oval-spherical organic polymer particles having ionic functional groups, which have each one continuous curved surface whose aspect ratio calculated by the formula: aspect ratio (P 1)=major axis (L1)/minor axis (D1), wherein the major axis (L1) and minor axis (D1) are those of a projection two-dimensional drawing obtained by light irradiation in the direction orthogonal to the direction of major axis of the particle, satisfies the relationship (P1)>=1.8. The obtained particles excel in optical properties, such as light scattering and light focusing, and frictional properties, such as sliding characteristic.
|