| 摘要 |
<p>PURPOSE:To enhance transparency, flatness, easy slip properties and adhesion by providing a thin layer consisting of a polyester/polyacrylic copolymer, an anionic antistatic agent and fine particles having a specific average particle size to at least the single surface of a polyester film. CONSTITUTION:A thin layer consisting of a polyester/polyacrylic copolymer (A), an anionic antistatic agent (B) and fine particles (C) having an average particle size of 0.5 mum or less is provided to at least the single surface of a polyester film. The copolymer (A) is especially excellent in the compatibility with the polymer type antistatic agent (B) and, by this combination, excellent transparency and antistatic properties are developed. The polyester becoming the backbone polymer of the copolymer (A) is a linear polymer synthesized from a polybasic acid or a derivative thereof and polyol or a drivative thereof and a polyacrylic component is grafted by known graft polymerization. As the anionic antistatic agent (B), a polymer type one with an MW of 5000 or more is pref. and, as the fine particles (C), polystyrene, polymethyl methacrylate, silica or alumina is used.</p> |
