Patent ID: 6174961
Filing Date: 2001-01-16
Classification: C08F,G02F,Y10T

Abstract:
A nonlinear-optically active terpolymer of the general formula 1 ##STR15##in which:R.sup.1, R.sup.2, R.sup.3 are identical or different from one another and are H, CH.sub.3 or halogen;X.sup.1, X.sup.2, X.sup.3 are identical or different from one another and are O or NR.sup.4, where R.sup.4 is H or a linear or branched C.sub.1- to C.sub.6 -alkyl radical;Y.sup.1 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 Z, can be replaced by O, S or NR.sup.5, where R.sup.5 is H or a linear or branched C.sub.1- to C.sub.6 -alkyl radical;Y.sup.2 is a linear or branched hydrocarbon chain having 1 to 3 carbon atoms;Y.sup.3 is a linear or branched C.sub.1- to C.sub.20 -alkyl radical, a C.sub.5- to C.sub.7 -cycloalkyl radical or a bi- or tricyclic cycloaliphatic radical having up to 18 carbon atoms;Z is a nonlinear-optically active group; and l:m:n=1 . . . 99:1 . . . 99:1 . . . 99.