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Title:
RETARDATION RAISING AGENT FOR LOWER FATTY ACID ESTER FILM OF CELLULOSE, OPTICAL COMPENSATING SHEET, AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2000275434
Kind Code:
A
Abstract:

To provide an optical compensating sheet using lower fatty acid ester film of cellulose high in retardation value, by using a compound having a triphenylene ring as a retardation-raising agent for lower fatty acid ester film of cellulose.

A compound having a triphenylene ring has a function for raising retardation of a lower fatty acid ester film of cellulose. When 0.01 to 20 pts.wt. compound having the triphenylene ring is added to 100 pts.wt. lower fatty acid ester of cellulose, the lower fatty acid ester film of cellulose with 70-400 nm retardation value in the thickness direction at 550 nm wavelength is provided. The compound having the triphenylene ring is preferably a compound represented by the formula. In the formula, R1-R6 are each independently a hydrogen atom, halogen atom, nitro, sulfo, aliphatic group, aromatic group, or heterocyclic group.


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Inventors:
MATSUOKA MITSUYUKI
KAWADA KEN
MURAYAMA MASAHIKO
Application Number:
JP8189199A
Publication Date:
October 06, 2000
Filing Date:
March 25, 1999
Export Citation:
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Assignee:
FUJI PHOTO FILM CO LTD
International Classes:
C07D213/16; C07D213/68; C07D319/14; C07D323/00; C08K5/00; C08L1/00; G02B5/30; G02F1/1335; G02F1/13363; C07D233/90; (IPC1-7): G02B5/30; C08K5/00; C08L1/00; G02F1/13363
Attorney, Agent or Firm:
Yasuo Yanagawa



 
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