Patent ID: 7182885
Filing Date: 2007-02-27
Classification: C07C,C09K

Abstract:
1. An indene compound of formula (I) having a negative dielectric anisotropy: wherein: T is in each case, independently of one another, A is in each case, independently of one another, 1,4-phenylene, in which one or two ═CH— groups are each, optionally, replaced by ═N—, and which is unsubstituted or monosubstituted to tetrasubstituted, independently of one another, by halogen, —CN, —CH R is in each case, independently of one another, hydrogen, or is alkyl having 1 to 15 carbon atoms, alkoxy having 1 to 15 carbon atoms, alkenyl having 2 to 15 carbon atoms or alkynyl having 2 to 15 carbon atoms, which in each case is unsubstituted, monosubstituted by —CF L is hydrogen or halogen; X is hydrogen, or is alkyl having 1 to 15 carbon atoms, alkoxy having 1 to 15 carbon atoms, alkenyl having 2 to 15 carbon atoms or alkynyl having 2 to 15 carbon atoms, which in each case is unsubstituted, monosubstituted by —CF Y, U and W, independently of one another, are each hydrogen, or are alkyl having 1 to 15 carbon atoms, alkoxy having 1 to 15 carbon atoms, alkenyl having 2 to 15 carbon atoms or alkynyl having 2 to 15 carbon atoms, which in each case is unsubstituted, monosubstituted by —CF Z is in each case, independently of one another, a single bond, —CF n is 0, 1, 2 or 3, p and q, independently of one another, are 0, 1, 2 or 3, wherein n+p+q is 1–9.