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Patent Searching and Data


Title:
OPTICAL FILM, RETARDATION FILM AND POLARIZING PLATE
Document Type and Number:
Japanese Patent JP2006106606
Kind Code:
A
Abstract:

To provide an optical film which can be simply and inexpensively manufactured, is excellent in mechanical characteristics and thermal durability, has low specific gravity, low birefringence, low photoelastic modulus and low wavelength dispersion and permits high retardation, to provide a retardation film made by using the optical film and to provide a polarizing plate comprising the retardation film.

The optical film contains a norbornene-olefin copolymer resin (A) and a norbornene-olefin copolymer resin (B), wherein the norbornene-olefin copolymer resin (A) has the content of segment deriving from olefin monomer, of less than 60 mol% and the norbornene-olefin copolymer resin (B) has the content of segment deriving from olefin monomer, of 60 mol% or more.


Inventors:
Hiraike, Hiroyuki
Sawada, Takahiko
Yagi, Kazunari
Toyoshima, Katsunori
Higuchi, Isao
Application Number:
JP2004000296432
Publication Date:
April 20, 2006
Filing Date:
October 08, 2004
Export Citation:
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Assignee:
SEKISUI CHEM CO LTD
International Classes:
G02B5/30; C08F232/08; C08L45/00; G02F1/1335; G02F1/13363