Patent ID: 6126867
Filing Date: 2000-10-03
Classification: C08F,C09B,G02F

Abstract:
A nonlinear-optically active copolymer of the general formula 1 ##STR18## wherein: R.sup.1, R.sup.2 are, independently of one another, H, CH.sub.3 or halogen;U is a linear or branched C.sub.1 - to C.sub.20 -alkyl radical, a C.sub.5 - to C.sub.7 -cycloalkyl radical, a bi- or tricyclic alkyl radical having up to 18 carbon atoms, an aryl or heteroaryl radical, or an alkyl-substituted silane radical of the structure (CH.sub.2).sub.x -Si(R', R"", R'"") where x=1 to 5 and R', R"", R'""=C.sub.1 - to C.sub.5 -alkyl;V is a linear or branched hydrocarbon chain having 2 to 20 carbon atoms, where one or more nonadjacent CH.sub.2 groups, with the exception of the CH.sub.2 group providing the link to the radical W, can be replaced by O, S or NR.sup.3, where R.sup.3 is H or a linear or branched C.sub.1 - to C.sub.6 -alkyl radical;W is a nonlinear-optically active group; andm:n=5:95 to 95:5.