Title:
An optical film and a polarizing plate
Document Type and Number:
Japanese Patent JP6229824
Kind Code:
B2
Abstract:
An optical film having a heat resistance of 120°C or higher, a tear strength of 1.5 N/mm or more, a water vapor transmission rate of 50 g/m 2 ·day or less, and having absolute values |Re| and |Rth| of an in-plane retardation Re and a thickness-direction retardation Rth each being 1 nm or less; and a polarizing plate having the same. Preferably, the optical film includes a polymer containing a block A having the unit (a) of the hydrogenated product of the aromatic vinyl compound; and a copolymer block B having the unit (a) of the hydrogenated product of the aromatic vinyl compound and the unit (b) of the hydrogenated product of the diene compound.
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Inventors:
Yasuhide Fujino
Application Number:
JP2017539047A
Publication Date:
November 15, 2017
Filing Date:
November 14, 2016
Export Citation:
Assignee:
Zeon Corporation
International Classes:
G02B5/30; C08F297/04; C08J5/18; G02F1/1335
Domestic Patent References:
| JP2012133377A | ||||
| JP200852002A | ||||
| JP2011523668A | ||||
| JP2003114329A | ||||
| JP201113378A | ||||
| JP2009227905A | ||||
| JP2006243266A |
Foreign References:
| WO2007138850A1 | ||||
| WO2002012362A1 |
Attorney, Agent or Firm:
Sakai International Patent Office