Photocross-linkable naphthyl derivatives

Abstract

Photocross-linkable naphthyl derivatives include compounds of the formula: ##STR1## wherein R.sup.1 and R.sup.2 each independently signify a cross-linkable group; S.sup.1 and S.sup.2 signify --(CY.sub.2).sub.m -, --O(CY.sub.2).sub.m -, --(CY.sub.2).sub.m O--, --(CY.sub.2).sub.m COO--, --(CY.sub.2).sub.m OOC--, --(Si›(CH.sub.3).sub.2 !O).sub.m -, --OCH.sub.2 (Si›(CH.sub.3).sub.2 !O).sub.m Si›(CH.sub.3).sub.2 !CH.sub.2 O-- or --NHCH.sub.2 (Si›(CH.sub.3).sub.2 !O).sub.m Si›(CH.sub.3).sub.2 !CH.sub.2 NH--; Y signifies hydrogen, fluorine or methyl; a signifies 0 or 1; b signifies 1 or 2, with the proviso that a+b=2; m signifies a whole number of 1 to 16; A.sup.1 and A.sup.2 each independently signify 1,4-phenylene, which is optionally mono- or multiply-substituted with halogen, cyano, methyl, methoxy and/or acetyl, pyridine-2,5-diyl, pyrimidine-2,5-diyl, trans-1,4-cyclohexylene or trans-1,3-dioxane-2,5-diyl; and Z.sup.1 and Z.sup.2 each independently signify a single bond, --CH.sub.2 CH.sub.2 --, --OCH.sub.2 --, --CH.sub.2 O--, --COO--, --OOC--, --(CH.sub.2).sub.4 --, --O(CH.sub.2).sub.3 -- or --(CH.sub.2).sub.3 O--, liquid crystalline mixtures which contain such compounds, and their use in the cross-linked state for optical components.

Dependencies are inferred from the claim text.