Title:
光学フィルム
Document Type and Number:
Japanese Patent JP6676930
Kind Code:
B2
Abstract:
An object of the present invention is to provide an optical film for reducing the occurrence of cracks or debris during punching of a polarizing plate when the optical film is used as a protective film of the polarizing plate. The optical film of the present invention is an optical film containing a cycloolefin resin, wherein the cycloolefin-based resin is a cycloolefin resin that has at least one hydrogen-bond acceptor. The film contains alcohol solvents and hindered phenolic compound. The hydrophobicity measured by the methanol wettability manner enables 0.1 to 2.5 by mass% containing silicon dioxide particles relative to the total mass of the film. The hydrophobicity of the silicon dioxide particles is below 20% when methanol and pure water use a first solution of 3:7 by a volume ratio, and the hydrophobicity is above 80% when a second solution of 6:4 is used to the whole mass of the film by a volume ratio.
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Inventors:
Tatsuya Sasaki
Takashi Nanjo
Takashi Nanjo
Application Number:
JP2015219248A
Publication Date:
April 08, 2020
Filing Date:
November 09, 2015
Export Citation:
Assignee:
Konica Minolta Co., Ltd.
International Classes:
C08L45/00; C08J5/18; C08K3/36; C08K5/05; C08K5/13; G02B5/30
Domestic Patent References:
| JP2009237376A | ||||
| JP2008231384A | ||||
| JP2007098643A |
Foreign References:
| WO2007122932A1 |
Attorney, Agent or Firm:
Gwangyang International Patent Office