| 摘要 |
The purpose of the present invention is to provide: a modifier which enables the production of a film that undergoes a small variation in phase difference associated with the change in humidity, has excellent transparency and can be used suitably in optical applications; a resin composition which contains the modifier; an optical film which is produced using the composition; and a liquid crystal display device which is manufactured using the optical film. The present invention provides a modifier for cellulose ester resins, which comprises a polyester resin (A) containing, in the main chain backbone thereof, a structure represented by general formula (1) (wherein R1 to R22 independently represent a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group, or an aromatic group having 6 to 10 carbon atoms). |
