Patent ID: 7910020
Filing Date: 2011-03-22
Classification: C09K

Abstract:
1. A liquid crystal composition comprising: a mesogen containing compound represented by one of the following structures: wherein, a) each X is independently: b) each P is a reactive group independently selected from a group Q, amino, alkylamino, nitro, acrylate, methacrylate, 2-chloroacrylate, 2-phenylacrylate, acryloylphenylene, acrylamide, methacrylamide, 2-chloroacrylamide, 2-phenylacryiamide, oxetane, glycidyl, cyano, vinyl ether, vinyl ester, a styrene derivative, siloxane, ethyleneimine derivatives, or substituted or unsubstituted chiral or non-chiral monovalent or divalent groups chosen from steroid radicals, terpenoid radicals, alkaloid radicals and mixtures thereof, wherein the substituents are independently chosen from alkyl, alkoxy, amino, cycloalkyl, alkylalkoxy, fluoroalkyl, cyano, cyanoalkyl, cyanoalkoxy or mixtures thereof, or P is a structure having from 2 to 4 reactive groups or P is an unsubstituted or substituted ring opening metathesis polymerization precursor; c) the group Q is hydroxy, amine, alkenyl, alkynyl, azido, silyl, silylhydride, oxy(tetrahydro-2H-pyran-2-yl), thiol, isocyanato, thioisocyanato, acryloxy, methacryloxy, 2-(acryloxy)ethylcarbamyl, 2-(methacryloxy)ethylcarbamyl, aziridinyl, allyloxycarbonyloxy, epoxy, carboxylic acid, carboxylic acid derivatives selected from carboxylic ester, amide and carboxylic anhydride, or acyl halide, unsubstituted cinnamic acid derivatives, cinnamic acid derivatives that are substituted with at least one of methyl, methoxy, cyano and halogen; d) each L is independently chosen for each occurrence, the same or different, from a single bond, a polysubstituted, monosubstituted, unsubstituted or branched spacer independently chosen from arylene, (C e) the group R is selected from hydrogen, C f) the groups Mesogen-1 and Mesogen-2 are each independently a rigid straight rod-like liquid crystal group, a rigid bent rod-like liquid crystal group, or a rigid disc-like liquid crystal group; g) the group T is selected from P and hydrogen, aryl, alkyl, alkoxy, alkylalkoxy, alkoxyalkoxy, polyalkylether, (C wherein w is an integer from 1 to 26, y is an integer from 2 to 25, z is 1 or 2, provided that when: (i) the group X is represented by R, then w is an integer from 2 to 25, and z is 1; (ii) the group X is represented by -(L) (iii) the group X is represented by -(L) (iv) the group X is represented by -(L) (v) the group X is represented by  then w is 1, y is an integer from 2 to 25, and z is 1; (vi) the group X is represented by -(L) (vii) the group X is represented by -(L) in -(L) or residue thereof; a compound selected from a photochromic compound, a dichroic compound and a photochromic-dichroic compound; and optionally a liquid crystal polymer.