| 摘要 |
A cholesteric liquid crystal mixture containing a compound represented by formula (Ia) : Z 1 -Y 1 -A 1 -Y 3 -M 1 -Y 4 -A 2 -Y 2 -Z 2 , a compound represented by formula (Ib) : Z 3 -Y 5 -A 3 -Y 7 -M 2 -P, and a tri- or higher functional polymerizable monomer suppresses deposition of a liquid crystal at the time of forming a film, exhibits a wide characteristic reflection bandwidth of a film to be obtained, and suppresses change of a reflection bandwidth caused when laminated glass is manufactured by laminating a liquid crystal film obtained by fixing a cholesteric liquid crystal phase of the film to be obtained with an interlayer film. Z 1 , Z 2 and Z 3 represent a polymerizable group; A 1 , A 2 and A 3 represent a spacer having an atom-bonding chain length of 1 to 30, provided that the spacer represents an alkylene group, or a linking group of multiple alkylene groups bonding to each other via -O- or -CO-; M 1 and M 2 represent (-T 1 -Y 8 ) n -T 2 -; n indicates a natural number; when n is 2 or more, multiple (-T 1 -Y 8 )'s may be the same or different; T 1 and T 2 represent a saturated or unsaturated hydrocarbon ring, or a saturated or unsaturated heterocyclic ring, provided that the hydrocarbon ring and the heterocyclic ring may have a substituent; Y 1 , Y 2 , Y 3 , Y 4 , Y 5 , Y 7 and Y 8 each independently represent a single bond, -O-, -CO-, -O-CO-, -CO-O- or -O-CO-O-; and P represents a hydrogen atom or an alkyl group having 1 to 15 carbon atoms. |
