Title:
CELLULOSE DERIVATIVE, METHOD FOR PRODUCING SAME, OPTICAL FILM, CIRCULAR POLARIZING PLATE, AND ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/019701
Kind Code:
A1
Abstract:
The problem addressed by the present invention is to provide: a cellulose derivative that achieves superior wavelength dispersion and λ/4 phase difference and that has low phase difference unevenness; a method for producing same; an optical film; a circular polarizing plate; and an organic EL display device. The cellulose derivative has a glucose skeleton represented by general formula (1), and is characterized by the average degree of substitution and the total average degree of substitution of hydrogen atoms in hydroxyl groups at position 2, 3, and 6 of the glucose skeleton satisfying all the conditions stipulated by the belowmentioned relational expressions (1-1) to (1-4). Relational expression (1-1): the total average degree of substitution (DSa) of an aliphatic group is 1.40 ≤ DSa ≤ 2.80. Relational expression (1-2): the total average degree of substitution (DSb) of an aromatic group is 0.00 < DSb ≤ 1.50. Relational expression (1-3): DSb (position 6) < DSb (position 2) + DSb (position 3). Relational expression (1-4): 1.50 < DSa + DSb ≤ 2.90.
Inventors:
FUJISAWA RIE (JP)
FUKUSAKA KIYOSHI (JP)
SUZUKI TAKATUGU (JP)
KIUCHI HIROYOSHI (JP)
OSAWA SHO (JP)
FUKUSAKA KIYOSHI (JP)
SUZUKI TAKATUGU (JP)
KIUCHI HIROYOSHI (JP)
OSAWA SHO (JP)
Application Number:
PCT/JP2014/065534
Publication Date:
February 12, 2015
Filing Date:
June 12, 2014
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
C08B3/12; C08B3/06; C08B3/08; C08B3/10; C08B3/24; C08B13/00; G02B5/30; H01L51/50; H05B33/02
Foreign References:
| JP2009235374A | 2009-10-15 | |||
| JP2007297554A | 2007-11-15 | |||
| JP2009030031A | 2009-02-12 | |||
| JP2009132884A | 2009-06-18 | |||
| JP2008095026A | 2008-04-24 | |||
| JP2008095027A | 2008-04-24 | |||
| JP2007332292A | 2007-12-27 |
Attorney, Agent or Firm:
KOYO INTERNATIONAL PATENT FIRM (JP)
Patent business corporation Mitsuaki international patent firm (JP)
Patent business corporation Mitsuaki international patent firm (JP)
Download PDF:
Previous Patent: (NITRILE RUBBER)-METAL-LAMINATED GASKET MATERIAL
Next Patent: AQUEOUS INK COMPOSITION, INKJET RECORDING METHOD, AND COLORED MATERIAL
Next Patent: AQUEOUS INK COMPOSITION, INKJET RECORDING METHOD, AND COLORED MATERIAL