PHASE DIFFERENCE FILM AND METHOD FOR REGULATING WAVELENGTH DEPENDENCE OF PHASE DIFFERENCE FILM

摘要

PURPOSE: To obtain an inexpensive phase difference film in which wavelength dependence is easily regulated without requiring a complicated process by incorporating a plasticizer into a thermoplastic resin. ;CONSTITUTION: This phase difference film consists of 100 pts.wt. thermoplastic resin and 2-20 pts.wt. plasticizer. The plasticizer, to be used is, for example, phthalic acid-base plasticizer such as dimethylphthalate and diethylphthalate, aliphatic dibasic acid-base plasticizer such as adipic acid-2-ethylhexyl and adipic acid-di-n-decyl, phosphate-base plasticizer such as tributhylphosphate and tri-2- ethylhexylphosphate, and epoxy plasticizer such as epoxidized soybean oil and epoxydized talleol fatty acid 2-ethylhexyl. It is preferable to use a polymer plasticizer such as polyester-base or polyether-base one at the standpoint that the polymer has small transfer property.;COPYRIGHT: (C)1995,JPO