Reactive mesogens

Patent metadata

Field	Value
Publication number	US-10048420-B2
Application number	US-201314654079-A
Country	US
Kind code	B2
Filing date	Nov 18, 2013
Priority date	Dec 21, 2012
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

The invention relates to reactive mesogens (RMs) comprising a terphenyl group, to mixtures and formulations comprising them, to polymers obtained form such RMs and RM mixtures, and the use of the RMs, RM mixtures and polymers in optical or electrooptical components or devices, like optical retardation films for liquid crystal displays (LCDs).

First claim

The invention claimed is:

1. A compound of formula

wherein
P is a polymerizable group,
each L 2 is independently of each other P-Sp-, F, Cl, Br, I, —CN, —NO 2 , —NCO, —NCS, —OCN, —SCN, —C(═O)NR 00 R 000 , —C(═O)X 0 , —C(═O)OR 00 , —C(═O)R 00 , —NR 00 R 000 , —OH, —SF 5 , optionally substituted silyl, aryl or heteroaryl with 1 to 12, C atoms or straight chain or branched alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy or alkoxycarbonyloxy with 1 to 12 C atoms, wherein one or more H atoms are optionally replaced by F or Cl,
Sp is a spacer group,
R 00 , R 000 independently of each other denote H or alkyl with 1 to 12 C-atoms,
X 0 is F or Cl,
Y is CN
and x is an integer 3 to 6.

2. The compound of claim 1 , wherein P is selected from the group consisting of vinyloxy, acrylate, methacrylate, fluoroacrylate, chloroacrylate, oxetane and epoxide groups.

3. The compound of claim 1 , wherein L 2 denote independently of each other F or CH 3 .

4. A mixture comprising two or more reactive mesogens (RMs), at least one of which is a compound of formula according to claim 1 .

5. The mixture according to claim 4 , comprising one or more RMs having only one polymerizable functional group, and one or more RMs having two or more polymerizable functional groups.

6. A formulation comprising one or more compounds of formula according to claim 1 , and further comprising one or more solvents and/or additives.

7. A polymer obtained by polymerizing a compound of formula or an RM mixture comprising a compound according to claim 1 .

8. The polymer according to claim 7 , wherein the RM mixture is aligned.

9. The polymer according to claim 7 , wherein polymerization is conducted at a temperature where the RM mixture exhibits a liquid crystal phase.

10. An optical, electrooptical or electronic device or a component thereof, comprising an compound, RM mixture or polymer according to any of claims 1 , 4 , or 7 .

11. The component of claim 10 , which is selected from the group consisting of optical retardation films, polarizers, compensators, beam splitters, reflective films, alignment layers, colour filters, antistatic protection sheets, electromagnetic interference protection sheets, polarization controlled lenses, and IR reflection films.

12. The device of claim 10 , which is selected from the group consisting of electrooptical displays, LC displays, autostereoscopic 3D displays, organic light emitting diodes (OLEDs), optical data storage devices and windows.

Assignees

• Merck Patent Gmbh

Inventors

• Adlem Kevin
• Parri Owain Llyr
• Smith Graham
• Saxton Patricia Eileen
• Namutebi Mariam
• Cook Vicki
• Sargent Joseph

Classifications

• G02B5/3083 Primary

  Birefringent or phase retarding elements (G02B5/3008, G02B5/3016 take precedence; systems for polarisation control G02B27/286; manufacturing phase modulating patterns by lithographic processes G03F7/001) · CPC title

• C07C255/55

  containing cyano groups and esterified hydroxy groups bound to the carbon skeleton · CPC title

• C09K2019/123

  Ph-Ph-Ph · CPC title

• C09K19/3842

  Polyvinyl derivatives · CPC title

• C09K19/12

  at least two benzene rings directly linked, e.g. biphenyls · CPC title