Title:
RETARDATION FILM
Document Type and Number:
WIPO Patent Application WO/2007/099927
Kind Code:
A1
Abstract:
Disclosed is a retardation film mainly composed of an acrylic polymer having transparency, heat resistance and high retardation property. Specifically disclosed is a retardation film mainly composed of an acrylic polymer, wherein the in-plane retardation per a thickness of 100 μm at a wavelength of 589 nm is not less than 130 nm but not more than 500 nm, and the total light transmittance is not less than 85%. This retardation film preferably has a glass transition temperature of not less than 110˚C but not more than 200˚C. The acrylic polymer as the main component of this retardation film preferably has a lactone ring structure.
Inventors:
ASANO HIDEO
NAKA AKIO
NIWA HIROKAZU
KUWAMOTO TOMOYUKI
WATABE HIROYASU
SHIOTANI YOSHIYUKI
NAKA AKIO
NIWA HIROKAZU
KUWAMOTO TOMOYUKI
WATABE HIROYASU
SHIOTANI YOSHIYUKI
Application Number:
PCT/JP2007/053570
Publication Date:
September 07, 2007
Filing Date:
February 27, 2007
Export Citation:
Assignee:
NIPPON CATALYTIC CHEM IND (JP)
ASANO HIDEO
NAKA AKIO
NIWA HIROKAZU
KUWAMOTO TOMOYUKI
WATABE HIROYASU
SHIOTANI YOSHIYUKI
ASANO HIDEO
NAKA AKIO
NIWA HIROKAZU
KUWAMOTO TOMOYUKI
WATABE HIROYASU
SHIOTANI YOSHIYUKI
International Classes:
G02B5/30; C08F220/26; C08J5/18
Foreign References:
| JP2005156864A | 2005-06-16 | |||
| JP2004168882A | 2004-06-17 | |||
| JP2005162835A | 2005-06-23 |
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (2-6 Tenjinbashi 2-chome Kita, Kita-k, Osaka-shi Osaka 41, JP)
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