Fluorine-containing aromatic compounds

摘要

Fluorine-containing aromatic compounds of the formula I <IMAGE> in which R<1> is alkyl having up to 12 carbon atoms or alkenyl having 2 to 12 carbon atoms, Q<1> and Q<2> are each, independently of one another, -O- or a single bond, and one of the radicals Q<1> and Q<2> is alternatively trans-1,4-cyclohexylene, T<1> is -C IDENTICAL C- or <IMAGE> , T<2> is <IMAGE> or -C IDENTICAL C-, R<2> is F, Cl, -CF3, -OCF3, -OCHF2 or one of the meanings of R<1>, one of the radicals L<1> and L<2> is F and the other of these radicals is H or F, are suitable as components of liquid-crystalline phases for IR shutters.