Patent ID: 6468444
Filing Date: 2002-10-22
Classification: A61K,A61Q,C09K

Abstract:
A chiral dopant of the formula IZ1â€”Y1â€”(A1)mâ€”Y2â€”Mâ€”Y3â€”Xâ€”Z2â€ƒâ€ƒI in which the variables have, independently of one another, the following meanings:A1 a spacer with a chain length of 1 to 30 C atoms; Y1 to Y3 a chemical bond, â€”Oâ€”, â€”Sâ€”, â€”C(&boxH;O)â€”, â€”C(&boxH;O)â€”Oâ€”, â€”Oâ€”C(&boxH;O)â€”, â€”CH&boxH;CHâ€”C(&boxH;O)â€”Oâ€”, â€”Oâ€”C(&boxH;O)â€”Oâ€”, â€”C(&boxH;O)â€”N(R)â€” or (R)Nâ€”C(&boxH;O)â€”, â€”CH2â€”Oâ€”, â€”Oâ€”CH2â€”, â€”CH&boxH;Nâ€” or â€”N&boxH;CHâ€” or â€”N&boxH;Nâ€”; M a mesogenic group; R hydrogen, C1-C4-alkyl; Z1 hydrogen, C1-C4-alkyl, a polymerizable group or a radical having a polymerizable group; Z2 C1-C4-alkyl, a polymerizable group or a radical having a polymerizable group; X a dianhydrohexitol residue selected from the group consisting of dianhydrosorbitol, dianhydromannitol and dianhydroiditol; m 0 or 1; where the radicals Z1, Z2, Y1 to Y3, can be identical or different, and at least one Z1 or Z2 radical is a polymerizable group or a radical comprising a polymerizable group.