| 摘要 |
PURPOSE:To obtain the subject film, containing a specific amount of fine composite material particles composed of an organic compound having amino groups and gelatinous silica in a polyester, having small voids and excellent in slipperiness, blocking resistance, abrasion resistance, etc. CONSTITUTION:A polyester film, containing (A) an organic compound having plural amino groups in the molecule which is preferably a polymer (derivative) of an alkyleneimine and (B) fine composite material particles, composed of gelatinous silica and having 0.05-5mum average particle diameter in an amount of 0.005-5wt.% in a polyester film which is preferably a biaxially oriented polyester film. The aforementioned film hardly causes scratches and is excellent in durability. Furthermore, the above-mentioned fine particles are preferably in a spherical form having 1.0-1.2 ratio of the major axis/minor axis and the coefficient of variation in the particle diameter is preferably <=15%. |
