| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a resin for a retardation film and a resin composition for a retardation film which are superior in flexibility, can easily increase birefringence, enable melt extrusion molding, have smaller phase difference as a measurement wavelength is shorter, and have larger phase difference as the measurement wavelength is longer, to provide a method of manufacturing the retardation film which is superior in transparency and surface smoothness using the resin or the resin composition, and to provide the retardation film having the above-described properties. <P>SOLUTION: A cellulose acetate butylate resin (composition) having a specific substituent is changed into a film by a specific method such as melt extrusion molding method, by performing a drawing method or the like in some cases, thereby obtaining the retardation film. <P>COPYRIGHT: (C)2012,JPO&INPIT |
