Patent Number: 6,168,838

Title: Fluorinated phenantrene derivatives for liquid crystal mixtures

Abstract: Fluorinated phenanthrene derivatives and their use in liquid-crystalline mixtures Fluorinated phenanthrene derivatives of the formula (I) ##STR1## in which G is --CHF--CH.sub.2 -- or --CF.dbd.CH--, E.sup.1, E.sup.2, E.sup.3, E.sup.4, E.sup.5 and E.sup.6 are identical or different and are --CH--, --CF-- or --N-- and R.sup.1 (--A.sup.1 --M.sup.1).sub.a (--A.sup.2 --M.sup.2).sub.b, (M.sup.3 --A.sup.3 --).sub.c (M.sup.4 --A.sup.4 --)d R.sup.2 denote mesogenic radicals are suitable as components for liquid-crystalline mixtures, especially ferroelectric mixtures.

Inventors: Schmidt; Wolfgang (Koln, DE), Manero; Javier (Liederbach, DE)

Assignee: Aventis Research & Technologies GmbH & Co. KG

International Classification: C07C 23/00 (20060101); C07C 23/18 (20060101); C07C 25/18 (20060101); C07C 17/16 (20060101); C07C 17/00 (20060101); C07C 25/00 (20060101); C07C 17/357 (20060101); C09K 19/34 (20060101); C09K 19/32 (20060101); C09K 019/32 (); C09K 019/34 (); C07C 023/44 (); C07C 043/225 (); C07D 471/00 ()

Expiration Date: 01/02/2018