Patent ID: 8647725
Filing Date: 2014-02-11
Classification: C08J,C08L,C09K,G02B,G02F,Y10T

Abstract:
1. A cellulose acylate film, comprising an acyl-modified compound of a reduction product of a ketone compound-formaldehyde polymer, wherein the acyl-modified compound is a compound represented by the following Formula (I): wherein, R wherein a degree of acyl substitution of cellulose acylates in the cellulose acylate film is 2.0 to 2.97, wherein in-plane retardation (Re) and retardation in a thickness direction (Rth) of the cellulose acylate film at a measurement wavelength of 548 nm or 446 nm satisfy the relationships represented by formulae (3-c) and (4-c): wherein a moisture permeability of the cellulose acylate film is 1000 to 2500 g/m