| 摘要 |
PURPOSE:To obtain a composition having small voids in molding into films and yarns, excellent slipperiness and shaving resistance, comprising particles subjected to surface treatment with a specific polyester and a thermoplastic polyester. CONSTITUTION:Particles subjected to surface treatment with a polyester which is a polyester comprising a dicarboxylic acid and a glycol component wherein >=60mol% total dicarboxylic acid components of the polyester segment are aromatic dicarboxylic acids and 10-40mol% total dicarboxylic acid components are dicarboxylic acids containing sulfonic acid or an alkali metal salt thereof and a glycol component is an aliphatic or alicyclic glycol, b are blended with a thermoplastic polyester. Calcium carbonate is preferably used as the particles which has preferably 0.1-3mum average particle diameter in the case of aiming a magnetic recording medium. |
