Patent ID: 11914248
Assignee: FUJIFILM CORPORATION
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC G  B  C | IPC C  G

Claim 0:
1. A photo-alignment copolymer comprising:
a repeating unit A including a photo-alignment group represented by Formula (A); and
a repeating unit B including a crosslinkable group represented by Formula (B),, in Formula (A), R1 represents a hydrogen atom or a methyl group, L1 is a divalent linking group represented by any one of Formulae (1) to (10),, in Formulae (1) to (10), *1 represents the bonding position with the carbon atom constituting the main chain in Formula (A), and *2 represents the bonding position with the carbon atom constituting the carbonyl group in Formula (A), R2, R3, R4, R5, and R6 each independently represent a hydrogen atom or a substituent, and among R2, R3, R4, R5, and R6, two adjacent groups may be bonded to form a ring, and
in Formula (B), R7 represents a hydrogen atom or a methyl group, L2 represents a divalent linking group, and X represents a crosslinkable group,
wherein X in Formula (B) is at least one crosslinkable group selected from the group consisting of Formulae (X1) to (X4),, in Formulae (X1) to (X4), * represents the bonding position with L2 in Formula (B), R8 represents any one of a hydrogen atom, a methyl group, or an ethyl group, and S in Formula (X4) represents any one of a vinyl group, an allyl group, a styryl group, an acryloyl group, and a methacryloyl group, and
wherein the photo-alignment copolymer has a weight-average molecular weight of 10.000 to 500 000.