发明名称 |
Cellulose Ester Film, Process for Producing Cellulose Ester Film, Optical Film, Polarization Plate and Liquid Crystal Display Unit |
摘要 |
A cellulose ester film that excels in uniformity of retardation as an optical property, especially uniformity of retardation in the direction of film width, and further contrast; a process for producing such a cellulose ester film; and making use of the film, an optical film, polarizing plate and liquid crystal display unit. There is provided a process characterized by subjecting, to melting film formation, a solid cellulose ester having been suspension washed with a poor organic solvent to cellulose ester in the presence of an antioxidant so that the content of free acids in the cellulose ester is 50 ppm or less.
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申请公布号 |
US2009142515(A1) |
申请公布日期 |
2009.06.04 |
申请号 |
US20060086580 |
申请日期 |
2006.11.21 |
申请人 |
NAKAMURA KAZUAKI;KIYOHARA KAZUTO;TAKEDA AKIHIKO |
发明人 |
NAKAMURA KAZUAKI;KIYOHARA KAZUTO;TAKEDA AKIHIKO |
分类号 |
C09K19/02;B29D7/01;C08B3/00 |
主分类号 |
C09K19/02 |
代理机构 |
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