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Patent Searching and Data


Title:
OPTICAL FILM AND POLARIZING PLATE
Document Type and Number:
WIPO Patent Application WO/2017/086270
Kind Code:
A1
Abstract:
Provided is an optical film that is formed from a resin containing a polymer having a molecular weight of at least 100,000, and has a heat resistance of at least 140°C, a pencil hardness of at least F, and a moisture vapor transmission rate of at most 50 g/m2∙day, wherein the absolute values |Re| and |Rth| of the ratio of the in-plane retardation Re and the thickness-direction retardation Rth do not exceed 3 nm. Further provided is a polarizing plate equipped with the optical film. The polymer preferably contains a block A, which has an aromatic vinyl compound hydride unit (a), and a copolymer block B, which has the aromatic vinyl compound hydride unit (a) and a diene compound hydride unit (b).

Inventors:
FUJINO YASUHIDE (JP)
Application Number:
PCT/JP2016/083694
Publication Date:
May 26, 2017
Filing Date:
November 14, 2016
Export Citation:
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Assignee:
ZEON CORP (JP)
International Classes:
G02B5/30; C08F297/04; C08J5/18; G02F1/1335; G02F1/13363
Foreign References:
JP2006195242A2006-07-27
JP2010191385A2010-09-02
JP2015187241A2015-10-29
JP2012133377A2012-07-12
JP2008052002A2008-03-06
Other References:
See also references of EP 3379305A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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