US 11,732,192 B2
Liquid crystal composition, light absorption anisotropic film, laminate, and image display device
Hiroshi Matsuyama, Kanagawa (JP); Wataru Hoshino, Kanagawa (JP); and Teruki Niori, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Feb. 4, 2020, as Appl. No. 16/781,473.
Application 16/781,473 is a continuation of application No. PCT/JP2018/030375, filed on Aug. 15, 2018.
Claims priority of application No. 2017-156878 (JP), filed on Aug. 15, 2017.
Prior Publication US 2020/0172810 A1, Jun. 4, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. C09K 19/38 (2006.01); C09K 19/20 (2006.01); C09K 19/24 (2006.01); C09K 19/32 (2006.01); C09K 19/60 (2006.01); G02F 1/1335 (2006.01)
CPC C09K 19/3833 (2013.01) [C09K 19/2007 (2013.01); C09K 19/24 (2013.01); C09K 19/32 (2013.01); C09K 19/38 (2013.01); C09K 19/3852 (2013.01); C09K 19/60 (2013.01); G02F 1/1335 (2013.01); C09K 2019/2042 (2013.01); C09K 2019/2078 (2013.01)] 20 Claims
 
1. A liquid crystal composition comprising:
a side chain polymer liquid crystalline compound; and
a dichroic substance,
wherein the side chain polymer liquid crystalline compound is a copolymer having a repeating unit (1) containing a mesogenic group with a molecular weight of greater than 280 and a repeating unit (2) with a molecular weight of 280 or less, a content of the repeating unit (2) is less than 14% by mass with respect to a total mass of the side chain polymer liquid crystalline compound, a content of the dichroic substance is greater than 2% by mass and less than 30% by mass with respect to a total solid content of the liquid crystal composition, and
the repeating unit (2) is a repeating unit represented by Formula (2),

OG Complex Work Unit Chemistry
in Formula (2), R21 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, L21 represents a single bond or a divalent linking group, P21 represents a monovalent group containing an acryloyl group, a methacryloyl group, a maleimide group, a styryl group, or a 1-cyclopentene-3,5-dione group.