Patent ID: 7569261
Filing Date: 2009-08-04
Classification: C08J,C08L,C09K,G02B

Abstract:
1. A Cellulose acylate film, in which X-ray diffraction intensity satisfies Formulae (I) to (III) below and a half-value width of the peak at 2θ 2 is greater than 3° and not greater than 7°; wherein when it is assumed that θ is the Bragg angle, 2θ 1 indicates 2θ at which the intensity becomes the minimum in the 2θ range of 4° to 5°, 2θ 2 indicates 2θ at which the intensity becomes the maximum in the 2θ range of 5° to 10°, 2θ 3 indicates 2θ at which the intensity becomes the minimum in the 2θ range of 14° to 16°, I 1 indicates a diffractive intensity at 2θ 1 , I 2 indicates a diffractive intensity at 2θ 2 , and I 3 indicates a diffractive intensity at 2θ 3 ; and wherein the substitution degree of acyl of the cellulose acylate is 2.70 to 2.98.