| abstract |
An object of the present invention is to provide an optical film having improved hygroscopicity, heat resistance and brittleness at the same time, and therefore, an optical film which is less prone to light leakage and has good reworkability, a method for producing the same, a polarizing plate and a liquid crystal An object is to provide a display device. The purpose of the present invention is that the acrylic resin (A) and the cellulose ester resin (B) are in a mass ratio of 95: 5 to 30:70, and the acrylic resin (A) has a weight average molecular weight Mw of 110,000 or more and 1000000 or less, The acyl group total substitution degree (T) of the cellulose ester resin (B) is 2.0 or more and 3.0 or less, and the substitution degree of acyl groups having 3 or more and 7 or less carbon atoms is 1.2 or more and 3.0 or less. The cellulose ester resin (B) has a weight average molecular weight Mw of 75,000 to 300,000, a tension softening point of 105 to 145 ° C., a folding resistance of 50 to 100 times, and is produced by a melt casting film forming method. It was achieved by an optical film characterized in that. |