| 摘要 |
PURPOSE:To obtain the subject particle excellent in moldability and useful for an insulating material etc., by blending polydimethyl siloxane with a foamable polystyrene-based resin particle so that the largest amount thereof may be localized in the neighborhood of the surface layer and coating the surface with a phenyl group-containing silicone oil. CONSTITUTION:Polydimethyl siloxane (preferably 0.01-2 pts.wt. based on 100 pts.wt. resin particle) is blended with a foamable polystyrene-based resin particle containing a foaming agent (e.g. n-pentane) so that the largest amount thereof may be localized in the neighborhood of the surface layer thereof and the surface of the particle is coated with a silicone oil containing phenyl groups of the formula (R1 and R2 are methyl or phenyl, (n) is positive integer), etc., preferably in an amount of 0.005-2 pts.wt., thus obtaining the objective particle. |
