Title:
POLYCONDENSATION RESIN AND OPTICAL FILM COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2015/129833
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a resin that has an excellent balance of a variety of properties, such as optical physical properties, heat resistance, mechanical properties, and heat stability, and to provide an optical film and a phase-difference film that are obtained using the resin. The present invention relates to a polycondensation resin that has a repeating structural unit that includes an aromatic structure, the resin being characterized by having a structural unit and by the content of the aromatic structure in the repeating structural unit satisfying formula (I). (I) 5≤A≤-22.5∙B+38.3, wherein 0.75≤B≤0.93, A is the content (in mass%) of the aromatic structure in the repeating structural unit that constitutes the resin, and B is the ratio (R450/R550) of the phase difference (R450) at 450 nm and the phase difference (R550) at 550 nm of a stretched film that is produced from the resin.
Inventors:
NAMIKI SHINGO (JP)
HIRAMI YUUICHI (JP)
UEHARA HISATOSHI (JP)
HAYASHI HIROYUKI (JP)
TAKAMI YOSHIE (JP)
NOGAMI HIROYUKI (JP)
HIRAMI YUUICHI (JP)
UEHARA HISATOSHI (JP)
HAYASHI HIROYUKI (JP)
TAKAMI YOSHIE (JP)
NOGAMI HIROYUKI (JP)
Application Number:
PCT/JP2015/055721
Publication Date:
September 03, 2015
Filing Date:
February 26, 2015
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
C08G64/04; C08G63/16; G02B5/30; G02F1/13363
Foreign References:
| JP2012168560A | 2012-09-06 | |||
| JP2012251141A | 2012-12-20 | |||
| JP2012256061A | 2012-12-27 | |||
| JP2012117075A | 2012-06-21 | |||
| JP2013221147A | 2013-10-28 |
Attorney, Agent or Firm:
Eikoh Patent Firm, P. C. et al. (JP)
Patent business corporation glory patent firm (JP)
Patent business corporation glory patent firm (JP)
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