Cellulose-film modifier, cellulose composition, and optical cellulose film, polarizing plate-protecting film, polarizing plate, and liquid crystal display device, produced by using the same

摘要

A cellulose-film modifier, having a compound represented by the following Formula (1): wherein R1 represents a hydrogen atom or an aliphatic or aromatic acyl group; R2, R3 and R4 each represent a hydrogen atom or an aliphatic or aromatic group; and at least one of R2, R3 and R4 represents an aliphatic group bonding via its secondary carbon; a cellulose composition, an optical cellulose film, a polarizing plate-protecting film, a polarizing plate, and a liquid crystal display device.