Patent number: 7425356
Abstract: The invention relates to chiral compounds of formula I wherein X1, X2, X1, X2, x1, x2, y1, y2, B, C, U1, U2, V1, V2, W1 and W2 have the meaning given in claim 1, to liquid crystal mixtures comprising at least one chiral compound of formula I, to chiral linear or crosslinked liquid crystal polymers obtainable by polymerizing a polymerizable mixture comprising at least one chiral compound of formula I, to the use of chiral compound of formula I and mixtures and polymers obtained thereof in liquid crystal displays, active and passive optical elements, adhesives, synthetic resins with anisotropic mechanical properties, cosmetic and pharmaceutical compositions, diagnostics, liquid crystal pigments, for decorative and security applications, nonlinear optics, optical information storage or as chiral dopants, and to a liquid crystal display comprising a mixture comprising at least one chiral compound of formula I.
Type:
Grant
Filed:
May 24, 2007
Date of Patent:
September 16, 2008
Assignee:
Merck Patent GmbH
Inventors:
Andreas Taugerbeck, Peer Kirsch, Detlef Pauluth, Joachim Krause, Juliane Suermann, Michael Heckmeier
Publication number: 20070229732
Abstract: The invention relates to chiral compounds of formula I wherein X1, X2, X1, X2, x1, x2, y1, y2, B, C, U1, U2, V1, V2, W1 and W2 have the meaning given in claim 1, to liquid crystal mixtures comprising at least one chiral compound of formula I, to chiral linear or crosslinked liquid crystal polymers obtainable by polymerizing a polymerizable mixture comprising at least one chiral compound of formula I, to the use of chiral compound of formula I and mixtures and polymers obtained thereof in liquid crystal displays, active and passive optical elements, adhesives, synthetic resins with anisotropic mechanical properties, cosmetic and pharmaceutical compositions, diagnostics, liquid crystal pigments, for decorative and security applications, nonlinear optics, optical information storage or as chiral dopants, and to a liquid crystal display comprising a mixture comprising at least one chiral compound of formula I.
Type:
Application
Filed:
May 24, 2007
Publication date:
October 4, 2007
Inventors:
Andreas TAUGERBECK, Peer Kirsch, Detlef Pauluth, Joachim Krause, Juliane Suermann, Michael Heckmeier
Patent number: 7276633
Abstract: The present invention relates to a process for the preparation of a compound of the general formula R-(A1-Z-)mB—CF2O-A2-(A3)n—R???(I) in which R is alkyl, in which one or more CH2 groups may be replaced, independently of one another, by O, CF2, CH?CH, CH?CF or CF?CF, with the proviso that peroxide structures O—O and formaldehyde acetals O—CH2—O are excluded, A1 is, independently of one another, 1,4-cyclohexylene, 2,5-1,3-dioxanylene, 1,3-cyclobutylene or A2 and A3 are 1,4-phenylene, in which, independently of one another, from one to four hydrogens may be replaced by fluorine or one or two CH groups may be replaced by N, Z is a single bond, —CH2—CH2—, —CF2—CF2—, —CH?CH—, —CF?CF—, —CH?CF— or —CF?CH—, B is 2,6-disubstituted naphthalene, 2,6-disubstituted 5,6,7,8-tetrahydronaphthalene or 2,6-disubstituted trans-decalin, R? is R, F, OCF3, OCF2H, CF3, CI, SF5, CN or NCS, and m and n are, independently of one another, 0 or 1, comprising the following steps: a) conversion of a compound of the genera
Type:
Grant
Filed:
October 30, 2003
Date of Patent:
October 2, 2007
Assignee:
Merck Patent GmbH
Inventors:
Eike Poetsch, Werner Binder, Peer Kirsch, Andreas Taugerbeck