CELLULOSE ESTER FILM BLENDED POLYESTER ADDITIVE

摘要

The present invention relates to a cellulose ester film having a polyester additive blended which controls phase difference expression by substituting cellulose acylate by a butyryl group and substitutes by a butyryl group having a structure of a large volume to widen the ionic distance between oxide films formed on such as a hydroxyl group and a steel belt to reduce the ionic bonding force to improve a peel strength, and applies an additive to improve the moisture permeability, dimensional stability, and stretchbility.