Patent ID: 6187222
Filing Date: 2001-02-13
Classification: C09K

Abstract:
A reactive liquid crystal compound of formula IIR'-G'-R"" IIwhereinat least one of terminal groups R' and R"" is a reactive group HSW'.sub.2 C-- and the other terminal group of R' and R"" is an alkyl group of up 15 C atoms which is unsubstituted or substituted by one or more halogens and in which one or more CH.sub.2 groups is in each case independently replaced by --O--, --S--, --CO--, --OCO--, --CO--O--, or --O--CO--O-- wherein O atoms are not directly linked to one another, or is a reactive group exhibiting one reaction site selected from HOW'.sub.2 C--, HSW'.sub.2 C--, HW'N--, a carboxyl group, ##STR121##and O.dbd.C--N--, or is a polymerizable reactive group exhibiting two or more reactive sites selected from ##STR122##case independently, H or an alkyl group with 1-5 C atoms,G' is a rod-like diyl group of the formula--S.sup.1 --(A.sup.5 --Z.sup.3).sub.m --A.sup.6 --S.sup.2 --whereinS.sup.1 and S.sup.2 are each alkylene groups with 0-20 C atoms which can be linear or branched, it also being possible for one or more CH.sub.2 groups to be replaced, in each case independently from each other, by --O--, --CO--, --S-- or --NW'-- with the proviso that O atoms are not linked directly to one another,A.sup.5 and A.sup.6 are, independently from each other,a) a cyclohexylene group, wherein one or two non-adjacent CH.sub.2 groups may be replaced by O or S atoms,b) an unsubstituted 1,4-phenylene group wherein one to three CH groups may be replaced by --N-- or a 1,4-phenylene group which is mono- or polysubstituted by F, Cl and/or CH.sub.3,c) a bicyclo(2,2,2)octylene group, a naphthalene-2,6-diyl group, a decahydronaphthalene-2,6-diyl group or 1,2,3,4-tetrahydronaphthalene group,Z.sup.3 is, independently from each other, --CO--O--, --O--CO--, --CH.sub.2 CH.sub.2 --, --CH.sub.2 O--, --OCH.sub.2 --, --C.tbd.C-- or a single bond, andm is 1, 2, 3 or 4.