	US 11,718,790 B2
	Method for the preparation of a liquid crystal polymer film
Stephen Mulcahy, Southampton (GB); Eduardo Beltran Gracia, Southampton (GB); Owain Parri, Ringwood (GB); Vicki Poole, Southampton (GB); James Allen, Southampton (GB); Kevin Adlem, Bournemouth (GB); and Hassan Arasi, Romsey (GB)
Assigned to Merck Patent GmbH, Darmstadt (DE)
Appl. No. 17/424,563
Filed by Merck Patent GmbH, Darmstadt (DE)
PCT Filed Jan. 20, 2020, PCT No. PCT/EP2020/051229 § 371(c)(1), (2) Date Jul. 21, 2021, PCT Pub. No. WO2020/152079, PCT Pub. Date Jul. 30, 2020.
Claims priority of application No. 19153032 (EP), filed on Jan. 22, 2019.
Prior Publication US 2022/0119712 A1, Apr. 21, 2022
Int. Cl. G02F 1/1333 (2006.01); C09K 19/38 (2006.01); C08F 222/10 (2006.01); G02F 1/1337 (2006.01); C09K 19/56 (2006.01); C09K 19/04 (2006.01)

CPC C09K 19/3857 (2013.01) [C08F 222/1025 (2020.02); C09K 19/56 (2013.01); G02F 1/133726 (2021.01); G02F 1/133738 (2021.01); G02F 1/133788 (2013.01); C08F 2800/20 (2013.01); C09K 2019/0448 (2013.01)]

16 Claims

1. A method for manufacturing a homogeneous aligned polymer film comprising at least the steps of:

providing a polymerizable liquid crystal mixture, comprising one or more polymerizable liquid crystal molecules, wherein the total concentration of the one or more polymerizable liquid crystal molecules in the liquid crystal mixture is 85 to 99.9%, and one or more self assembling photoalignment agents, on a substrate;

irradiating the liquid crystal mixture with linearly polarised light causing photoalignment of the polymerizable liquid crystal mixture;

optionally curing the polymerizable liquid crystal compounds by irradiation with ultraviolet light,

wherein said homogeneous aligned polymer film is manufactured.