OPTICAL FILM, OPTICAL FILM MANUFACTURING METHOD, TRANSPARENT CONDUCTIVE FILM, AND GAS BARRIER FILM

WIPO Patent Application WO/2021/261195

A1

Provided is an optical film that is thin, has superior heat resistance, and readily forms a functional layer such as a transparent conductive layer or a gas barrier layer. This optical film comprises a process film and a cured resin layer, wherein the cured resin layer is a layer comprising the cured product of a curable resin composition that includes a polymer component (A) and a curable monomer (B), and [a] regarding characteristic values that are obtained through a dynamic viscoelasticity measurement from 25°C to 280°C at a temperature increase speed of 3°C/second, (I) at least one loss tangent peak is present on a curve expressing the change in loss tangent relative to temperature, and the peak temperature of each loss tangent peak is 150°C or greater, and (II) the storage elastic modulus decrease percentage, which is the percentage of decrease in the storage elastic modulus, from 25°C to 150°C is 40% or less, or [b] the glass transition temperature of the polymer component (A) is 250°C or greater, at least one loss tangent peak is present on the aforementioned curve, and the peak temperature of each loss tangent peak is 150°C or greater.

KINOSHITA HIROKI (JP)
NAGANAWA SATOSHI (JP)

PCT/JP2021/021113

December 30, 2021

June 03, 2021

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LINTEC CORP (JP)

B32B27/00

WO2013065812A1	2013-05-10
WO2016129329A1	2016-08-18
WO2019130750A1	2019-07-04
WO2018237377A1	2018-12-27
WO2020138206A1	2020-07-02
WO2013065812A1	2013-05-10

JP2014024894A	2014-02-06
JP2020082552A	2020-06-04
JP2004035638A	2004-02-05

OHTANI PATENT OFFICE (JP)

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