Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
OPTICAL FILM AND POLARIZING PLATE USING SAME
Document Type and Number:
Japanese Patent JP2009210777
Kind Code:
A
Abstract:

To provide an optical film improved in curling and blocking properties in a broad and lengthy roll, and high in stability to haze and retardation in drawing, and a polarizing plate with excellent front contrast using the same.

The optical film contains at least a cellulose ester, and an acrylic copolymer or a sugar ester compound including at least one furanose structure or pyranose structure, all or a part of OH groups of the compound to which 1-12 furanose structures or pyranose structures are bonded being esterified. The elastic modulus of the optical film is 3.4 GPA (measured in a 23C, 55 RH% environment) in both a carrying direction (MD direction) and a direction orthogonal to the carrying direction (TD direction) with TD elastic modulus/MD elastic modulus=1.05-2.0.


Inventors:
REN RIEKO
SUZUKI SHINICHIRO
HASEGAWA MITSUYO
Application Number:
JP2008053175A
Publication Date:
September 17, 2009
Filing Date:
March 04, 2008
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
KONICA MINOLTA OPTO INC
International Classes:
G02B5/30; B29C55/02; C08J5/18; C08K5/1545; C08L1/10; C08L33/04; G02F1/1335; G02F1/13363; B29K1/00; B29L7/00; B29L11/00