Patent ID: 6013197
Filing Date: 2000-01-11
Classification: C08F,C09K

Abstract:
Polymerizable, reactive liquid crystal compound of formula IR.sup.1 --P--X--A.sup.1 --Z.sup.1 --A.sup.2 --R.sup.2R.sup.1 is CH.sub.2 .dbd.CW--COO--, ##STR44## HWN--, CH.sub.2 .dbd.CH-- or HS--CH.sub.2 --(CH.sub.2).sub.m --COO-- with W being H, Cl or alkyl with 1-5 C atoms and m being 1-7;P is alkylene with up to 12 C atoms, it being also possible for one or more non-adjacent CH.sub.2 groups to be replaced by --O--,X is --O--, --S--, --COO--, --OCO--, --C.dbd.C-- or a single bond,R.sup.2 is a straight-chained, branched or chiral alklyl radical with up to 15 C atoms which is unsubstituted, mono-- or polysubstituted by halogen, it being also possible for one or more CH.sub.2 groups in these radicals to be replaced, in each cause independently of one another, by --O--, --S--, --CO--, --OCO--, --CO--O-- or --O--CO--O-- in such a manner that oxygen atoms are not linked directly to one another, or alternately R.sup.2 has one of the meanings given for R.sup.1 --P--X--,A.sup.1 is a 4,1-cyclohexylene, a 1,4-phenylene in which one or two CH groups may be replaced by N or a naphthalene-2,6-diyl radical which is unsubstituted or substituted by 1 to 4 halogen atoms,A.sup.2 is ##STR45## it being possible for these rings to be substituted by CN or halogen and one of the 1,4-phenylene groups can also be replaced by a 1,4-phenylene radical in which one or two CH groups are replaced by N,andZ.sub.1 and Z.sub.2 are each independently --CO--O--, --O--CO--, --CH.sub.2 CH.sub.2 --, --C.vertline.C-- or a single bond, andn is 0 or 1 subject to the provisio that where R.sup.1 is CH.sub.2 .dbd.CW--COO--, Z.sup.1 and Z.sup.2 are --CO--O--, --O-- CO-- or a single bond. a.sup.1 is unsubstituted phenylene or naphthalene, A is unsubstituted phenylene and B is unsubstituted phenylene, then R.sup.2 is not a chiral alkyl radical.