Patent ID: 8524810
Filing Date: 2013-09-03
Classification: C08L

Abstract:
1. A method for producing a cellulose acylate film, comprising bringing a styrene/maleic anhydride copolymer into contact with an ingredient capable of ring-opening the ring-closed acid anhydride structure moiety in the styrene/maleic anhydride copolymer to obtain a solution of partially ring-opened, styrene/maleic anhydride copolymer, mixing the solution with a cellulose acylate resin to obtain a mixed solution comprising the cellulose acylate resin and the partially ring-opened, styrene/maleic anhydride copolymer, and casting the mixed solution to form a cellulose acylate film, wherein the partially ring-opened, styrene/maleic anhydride copolymer is represented by the following Formula (1): wherein m and n each indicate a natural number; R wherein at least one of R