Title:
CELLULOSE ESTER FILM, AND POLARIZER AND LIQUID-CRYSTAL DISPLAY DEVICE BOTH EQUIPPED THEREWITH
Document Type and Number:
WIPO Patent Application WO/2012/124514
Kind Code:
A1
Abstract:
[Problem] To provide a cellulose ester film having a high transmittance and a process for producing the film and to provide both a polarizer that deteriorates little during an endurance test and a liquid-crystal display device that has a high contrast, the polarizer and the display device being equipped with the cellulose ester film. [Solution] A cellulose ester film characterized by comprising a cellulose ester which has been substituted by a C3-4 acyl group or by a C2 acyl group and a C3-4 acyl group, has a total degree of substitution with the acyl group(s) of 1.0 or higher but less than 2.0, and has a weight-average molecular weight of 150,000 or less and a sugar ester compound which has one to twelve pyranose and/or furanose structures and has an average degree of substitution of 2.8-6.0, and by having a film thickness of 10-35 µm, and a polarizer and a display device being equipped with the cellulose ester film.
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Inventors:
TAMAGAWA MINORI (JP)
Application Number:
PCT/JP2012/055422
Publication Date:
September 20, 2012
Filing Date:
March 02, 2012
Export Citation:
Assignee:
KONICA MINOLTA ADVANCED LAYERS (JP)
TAMAGAWA MINORI (JP)
TAMAGAWA MINORI (JP)
International Classes:
C08J5/18; C08K5/103; C08L1/10; G02B5/30; G02F1/1335
Domestic Patent References:
| WO2008062610A1 | 2008-05-29 | |||
| WO2007125765A1 | 2007-11-08 |
Foreign References:
| JP2010001383A | 2010-01-07 | |||
| JP2009210777A | 2009-09-17 | |||
| JP2007304376A | 2007-11-22 | |||
| JP2005515285A | 2005-05-26 |
Attorney, Agent or Firm:
HATTA & ASSOCIATES (JP)
Hatta international patent business corporation (JP)
Hatta international patent business corporation (JP)
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Claims: