UV stable high birefringence liquid crystals

High birefringence and low viscosity nematic liquid crystal single compounds and mixtures were developed and their properties evaluated. The UV stability of the single isothiocyanianes liquid crystal compounds was studied by different methods. Excellent UV durability of some of the single high birefringence isothiocyanianes was discovered. The new eutectic liquid crystal mixtures based on these compounds were tested in comparison to commercial high birefringence Merck's E44. Our new mixtures exhibit similar birefringence, similar to4 times lower visco-elastic coefficient and significantly better UV stability than E44 mixture.