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Title:
CELLULOSE ESTER AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2010/023707
Kind Code:
A1
Abstract:
A cellulose derivative that even in the use as the base material film of a viewing angle enlarging film with a discotic liquid crystal layer, would inhibit any occurrence of crater defects in the discotic liquid crystal layer. The cellulose derivative is obtained from a pulp of 20 ppm or less calcium content. The pulp may be derived from wood. The calcium content of the pulp may be in the range of about 0.01 to 15 ppm. The cellulose derivative may consist of a cellulose ester containing at least an acetyl. The calcium content of the cellulose derivative may be 120 ppm or less. This cellulose derivative is suitable for use as the base material film of a viewing angle enlarging film with a discotic liquid crystal layer.

Inventors:
MATSUMURA, Hiroyuki (Himeji Research Center,1239, Shinzaike, Aboshi-ku, Himeji-sh, HYOGO 83, 67112, JP)
松村 裕之 (〒83 兵庫県姫路市網干区新在家1239 ダイセル化学工業株式会社 総合研究所内 Hyogo, 67112, JP)
Application Number:
JP2008/002302
Publication Date:
March 04, 2010
Filing Date:
August 25, 2008
Export Citation:
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Assignee:
DAICEL CHEMICAL INDUSTRIES, LTD. (MAINICHI INTECIO, 3-4-5 Umeda, Kitak-ku, Osaka-sh, OSAKA 01, 53000, JP)
ダイセル化学工業株式会社 (〒01 大阪府大阪市北区梅田3丁目4番5号 毎日インテシオ Osaka, 53000, JP)
MATSUMURA, Hiroyuki (Himeji Research Center,1239, Shinzaike, Aboshi-ku, Himeji-sh, HYOGO 83, 67112, JP)
International Classes:
C08B3/06; C08J5/18; C08K3/18; C08L1/10; G02B5/30; G02F1/13363
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