1-Cyclohexyl-2-cyclohexylphenylethane derivatives

摘要

The compounds conform to the formula I, in which R1 and R2, independently of one another, are each linear alkyl having 1 - 7 carbon atoms. The compounds of the formula I are nematic liquid-crystal compounds having slightly negative dielectric anisotropy. In mixes with other nematic liquid-crystalline compounds of negative or positive dielectric anisotropy, they form liquid-crystal mixtures which have greatly reduced viscosity in a relatively broad temperature range of the phase-transition temperature from the nematic phase to the isotropic-liquid phase in the region of 65 DEG C. <IMAGE>