Title:
POLYMER FOR RETARDATION FILM, RETARDATION FILM, AND MANUFACTURING METHOD AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/194111
Kind Code:
A1
Abstract:
Provided is a retardation film containing a polyester resin which contains, as polymerization components: diol (A) containing fluorenediol (A1) represented by formula (1); and a dicarboxylic acid component (B) containing an alicyclic dicarboxylic acid (B1) having at least 60 mol% of a trans isomer (in the formula, Z1 and Z2 represent identical or different aromatic hydrocarbon rings, R1 and R2 represent identical or different substituents, A1 and A2 represent identical or different alkylene groups, R3 represents a substituent, m1 and m2 are the same or different and represent an integer of 0 or more, n1 and n2 are the same or different and represent an integer of 0 or 1 or more, and k represents an integer of 0-8). The obtained retardation film can achieve both reverse wavelength dispersion properties and thinning of the film.
Inventors:
OTA YOSHIYA (JP)
KAMEI SHINICHI (JP)
MASUDA NAGAYOSHI (JP)
OKIMI KATSUHIDE (JP)
MIYAUCHI SHINSUKE (JP)
KAMEI SHINICHI (JP)
MASUDA NAGAYOSHI (JP)
OKIMI KATSUHIDE (JP)
MIYAUCHI SHINSUKE (JP)
Application Number:
PCT/JP2019/014409
Publication Date:
October 10, 2019
Filing Date:
April 01, 2019
Export Citation:
Assignee:
OSAKA GAS CHEMICALS CO LTD (JP)
International Classes:
G02B5/30; B32B7/023; C08G63/123; C08J5/18; H01L27/32; H01L51/50; H05B33/02
Domestic Patent References:
| WO2008065899A1 | 2008-06-05 |
Foreign References:
| JP2007213043A | 2007-08-23 | |||
| JP2008156414A | 2008-07-10 | |||
| JP2017182058A | 2017-10-05 | |||
| JP2015200887A | 2015-11-12 | |||
| JPH05170880A | 1993-07-09 | |||
| US7862856B1 | 2011-01-04 |
Attorney, Agent or Firm:
KUWATA Mitsuo et al. (JP)
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