Patent ID: 7445821
Filing Date: 2008-11-04
Classification: C08J,C08K,C08L,C09K,G02B

Abstract:
1. A cellulose ester film containing cellulose ester and microparticles having an average primary particle diameter of from 0.1 to 1.0 μm, wherein a relative standard deviation of a primary particle diameter of the microparticles is from 1 to 20%, and wherein the cellulose ester film has a surface with a peak density of from 1,000 to 8,000 (1/mm 2 ), the peak density representing the number of peaks with a height of from 3 to 500 nm on the film surface measured employing a three dimensional surface structure analysis microscope in terms of the peak number per 1 mm 2 of the film.