Title:
樹脂溶液およびそれを用いた光学フィルムの製造方法
Document Type and Number:
Japanese Patent JP6870429
Kind Code:
B2
Abstract:
To provide a production method of an optical film that can be suitably used for a retardation film or the like.MEANS FOR SOLVING THE PROBLEM: A resin solution is provided, which comprises a polymer A showing positive birefringence, a polymer B showing negative birefringence, and an organic solvent. The organic solvent is a single solvent of an aromatic solvent having a -OR group (where R represents a linear or branched alkyl having 1 to 5 carbon atoms), or a mixture solvent of an aromatic solvent and a non-aromatic solvent having a -OR group; and the organic solvent has a solubility parameter δ of 17 to 23 (J/cm)determined by the Fedors method.SELECTED DRAWING: None
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Inventors:
Masayasu Ito
Naoki Sato
Takuya Komine
Shinji Shimosato
Naoki Sato
Takuya Komine
Shinji Shimosato
Application Number:
JP2017067537A
Publication Date:
May 12, 2021
Filing Date:
March 30, 2017
Export Citation:
Assignee:
Tosoh Corporation
International Classes:
C08L1/26; C08J5/18; C08L33/04; C08L35/02; G02B1/04; G02B5/30
Domestic Patent References:
| JP2016108536A | ||||
| JP2014005348A | ||||
| JP2007045085A | ||||
| JP2012066589A | ||||
| JP2009168900A | ||||
| JP2014066955A |
Foreign References:
| WO2014196552A1 | ||||
| WO2014091759A1 |