POLARIZING PLATE PROTECTIVE FILM

[Problem] The purpose of the present invention is to provide a polarizing plate protective film which has improved transparency. [Solution] A polarizing plate protective film mainly composed of a cellulose acetate that has a degree of substitution by acetyl groups of 2.80-2.99, which is characterize...

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Bibliographic Details
Main Authors YANO KENTARO, OKA SHIGEKI
Format Patent
LanguageEnglish
Korean
Published 28.08.2013
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
ORGANIC MACROMOLECULAR COMPOUNDS
PHYSICS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:[Problem] The purpose of the present invention is to provide a polarizing plate protective film which has improved transparency. [Solution] A polarizing plate protective film mainly composed of a cellulose acetate that has a degree of substitution by acetyl groups of 2.80-2.99, which is characterized in that the cellulose acetate satisfies the following conditions. (1) 15 ppm = (Ca component + Mg component) = 55 ppm (2) 0.5 = (Ca component + Mg component)/Na component = 2.6
Bibliography:Application Number: KR20137014470