OPTICAL FILM, FLEXIBLE DISPLAY DEVICE AND POLYAMIDE-IMIDE RESIN

WIPO Patent Application WO/2020/138042

A1

Provided is an optical film having a high modulus of elasticity and surface hardness. The optical film comprises a polyamide-imide resin containing a structural unit represented by formula (1): (In formula (1), R1 and R2 independently represent a C1-12 alkyl group, a C1-12 alkoxy group, a C6-12 aryl group, a C6-12 aryloxy group, a C1-12 carbonyl group, a C1-12 oxycarbonyl group or a halogen group, where the hydrogen atoms contained in R1 and R2 are may each be independently substituted with a halogen atom, a C1-4 alkyl group, a C1-4 alkoxy group, a hydroxyl group, or a carboxyl group, and V represents a single bond, -O-, a diphenylmethylene group, a C1-12 linear, branched or alicyclic divalent hydrocarbon group, -SO2-, -S-, -CO-, -PO-, PO2-, -N(R30)- or -Si(R31)2-, where the hydrogen atoms contained in said hydrocarbon group may each be independently substituted with a halogen atom, and R30 and R31 each independently represent hydrogen atoms or C1-12 alkyl groups which may be substituted with halogen atoms, m represents an integer of 0-2, n represents an integer of 1-4, p represents an integer of 0-4, and q represents an integer of 0-4) and a structural unit represented by formula (2): (in formula (2) X represents a divalent organic group and Y represents a tetravalent organic group).

MASUI KENTARO (JP)
MIYAMOTO KOJI (JP)
MOCHIZUKI KATSUNORI (JP)
AZEMI TAKUSHI (JP)
SAKAMOTO HIROMU (JP)

PCT/JP2019/050538

July 02, 2020

December 24, 2019

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SUMITOMO CHEMICAL CO (JP)

C08J5/18; C08G73/14; G02F1/1333; G09F9/00; H01L27/32

JPH10508048A	1998-08-04
JP2016125063A	2016-07-11
JP2018119132A	2018-08-02
JP2018172669A	2018-11-08

NAKAYAMA, Tohru et al. (JP)

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