PHASE DIFFERENCE FILM, AND MANUFACTURING METHOD FOR THE SAME

PROBLEM TO BE SOLVED: To provide a phase difference film excellent in the durability against a temperature change, and particularly achieving both the reciprocal wavelength dispersibility and the durability. SOLUTION: The phase difference film contains components (A), (B). The component (A) is a cel...

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Bibliographische Detailangaben
Hauptverfasser:	KAWAI YOSHIKAZU, KURIMOTO KENJI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DERIVATIVES THEREOF GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS METALLURGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICS POLYSACCHARIDES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a phase difference film excellent in the durability against a temperature change, and particularly achieving both the reciprocal wavelength dispersibility and the durability. SOLUTION: The phase difference film contains components (A), (B). The component (A) is a cellulose acylate satisfying formula (1), 2.20≤DSac (A)+DSay (A)≤2.90. DSac (A) is the substitution degree of an acetyl in the component (A). DSay (A) indicates the total of the substitution degree due to an acyl group of a carbon number of 3 or 4 in the component (A). The component (B) is a cellulose acylate with the residual degree of 0.30 or more of a hydroxyl group having the viscosity-average polymerization degree different from the component (A). COPYRIGHT: (C)2008,JPO&INPIT