RESIN FOR RETARDATION FILM, RESIN COMPOSITION FOR RETARDATION FILM, METHOD OF MANUFACTURING RETARDATION FILM, AND RETARDATION FILM

PROBLEM TO BE SOLVED: To provide a resin for a retardation film and a resin composition for a retardation film capable of providing a retardation film which is superior in flexibility, can easily increase birefringence, enables melt extrusion molding, has smaller phase difference as a measurement wa...

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Bibliographic Details
Main Authors HAMAGUCHI KIYOTAKA, SHIROYAMA YASUHIKO, FUJITANI MASAHIRO
Format Patent
LanguageEnglish
Published 12.07.2012
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
ORGANIC MACROMOLECULAR COMPOUNDS
PHYSICS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:PROBLEM TO BE SOLVED: To provide a resin for a retardation film and a resin composition for a retardation film capable of providing a retardation film which is superior in flexibility, can easily increase birefringence, enables melt extrusion molding, has smaller phase difference as a measurement wavelength is shorter, and has 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.SOLUTION: A cellulose acetate propionate 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.
Bibliography:Application Number: JP20100285067