Bicyclohexylethanes

摘要

New bicyclohexylethanes of formula I R1-Cy-Cy-CH2CH2-A-(Cy)n-R2 (I) wherein R1 is alkyl; R2 is alkyl, in which one or two non-adjacent CH2 groups can be replaced by O atoms, or is F, Cl, Br, CN, -COOalkyl or -O-CO-alkyl; or one of the radicals R1 and R2 can also be H; A is Cy, or 1,4-phenylene which is unsubstituted or substituted by one or two F and/or Cl atoms and/or CH3 groups or by a CN group; Cy is 1,4-cyclohexylene and n is 0 or 1; the alkyl groups in each case containing 1-10 C atoms, with the proviso that n is 1 if A is Cy and R2 is CN, can be used as constituents of dielectrics for electrooptical display elements.