Degradation Prevention Act of cellulose acetate film

摘要

PURPOSE: To prevent the degradation of a cellulose acetate film used in a silver halide photosensitive material or for protecting a polarizing plate and thus provide the film excellent in storage stability even under wet-heat conditions. ;CONSTITUTION: A cellulose acetate film optionally having a covering layer is protected from degradation by incorporating an amine compd. having a pKa (a negative logarithm of acid dissociation constant) of at least 4 or a substantially nonvolatile amine compd. having a mol.wt. per basic group of 200 or lower into the film or the covering layer.;COPYRIGHT: (C)1993,JPO&Japio