Merck Patent Gesellschaft MIT Beschrankter Haftung

Merck Patent Gesellschaft MIT Beschraenkter Haftung

Merck Patent Gmbh

Merck Patent Gesellschaft MIT

Merck Patent Gesellschaft MIT Beschr&auml;nkter Haftung

Andreas Wachtler

Joachim Krause

Reinhard Hittich

Volker Reiffenrath

Eike Poetsch

Thomas Geelhaar

Georg Weber

David Coates

Bernhard Scheuble

Rudolf Eidenschink

Bernhard Rieger

Herbert Plach

Ulrich Finkenzeller

Simon Greenfield

Ian Charles Sage

Hans A Kurmeier

George W Gray

Kenneth J Toyne

David Lacey

Hans-Adolf Kurmeier

Volker Meyer

Reinhard Hopf

Axel Pausch

Matthias Bremer

Brigitte Schuler

Kazuaki Tarumi

Ludwig Pohl

Ekkehard Bartmann

Michael Hird

Andreas Beyer

Michael Kompter

Robert William Clemitson

Hans-Michael Kompter

Anja Huth

Bernard Scheuble

Dieter Dorsch

Detlef Pauluth

Adam Jackson

Richard M Scrowston

Klaus Bofinger

David I Bishop

Klaus P Stahl

Jurgen Eichler

Peter Fuss

Stephen J Lewis

Heino Finkelmann

Karl-Heinz Derwenskus

Andreas Meudt

Michael P Burrow

Novel phenylcyclohexanes of the formula I in which n is 0 to 7, Qand Qare H, or one of these radicals is alternatively CH, r is 0, 1, 2, 3, 4 or 5, A is trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or a single bond, X is F, Cl, &#x2014;CF, &#x2014;CN, &#x2014;OCFor &#x2014;OCHF, and Y and Z are each, independently of one another, H or F, with the proviso that, in the case where A is a single bond, Q=Q=H and simultaneously X=CN, Y and/or Z are F.

Phenylcyclohexanes and a liquid-crystalline medium

Novel phenylcyclohexanes of the formula Iin which n is 0 to 7, Qand Qare H, or one of these radicals is alternatively CH, r is 0, 1, 2, 3, 4 or 5, A is trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or a single bond, X is F, Cl, &#x2014;CF, &#x2014;CN, &#x2014;OCFor &#x2014;OCHF, and Y and Z are each, independently of one another, H or F, with the proviso that, in the case where A is a single bond, Q=Q=H and simultaneously X=CN, Y and/or Z are F.

Described are bis(perfluoro-n-alkane-sulfonate) compounds, methods for preparing these compounds and use of these compounds, for example as starting materials for the synthesis of chiral and phosphine ligands for transition metal catalysts.

Perfluoro-n-alkylsulfonic acid derivatives

1,4-disubstituted 2,6-difluorobenzene compound of formula I

1,4-disubstituted 2,6-difluorobenzene compounds, and a liquid-crystalline medium

The invention relates to an electro-optical liquid-crystal display having a realignment layer for realigning the liquid crystals whose field has a significant component parallel to the liquid-crystal layer and which contains a liquid-crystalline medium of positive dielectric anisotropy, where the medium comprises at least one mesogenic compound containing a 3,4,5-trifluorophenyl group and/or comprises at least one mesogenic compound [lacuna] a structural unit of the formula 2 ##STR1## in which A is O or CH,

Electro-optical liquid-crystal display

Electro-optical liquid crystal display

Novel phenylcyclohexanes of the formula I ##STR1## in which n is 0 to 7, Q.sup.1 and Q.sup.2 are H, or one of these radicals is alternatively CH.sub.3, r is 0, 1, 2, 3, 4 or 5, A is trans-1,4-cyclohexylene, 1,4-phenylene, 3-fluoro-1,4-phenylene or a single bond, X is F, Cl, --CF.sub.3, --CN, --OCF.sub.3 or --OCHF.sub.2, and Y and Z are each, independently of one another, H or F, with the proviso that, in the case where A is a single bond, Q.sup.1 =Q.sup.2 =H and simultaneously X=CN, Y and/or Z are F.

Benzene derivatives of the formula I ##STR1## in which n is 1 to 7, Q is --CO or --(CH.sub.2).sub.r -- where r is 1 to 5, s is 0, 1 or 2, t is 0 or 1, where s+t.gtoreq.1, X is F, Cl, --CF.sub.3, --CN, --OCF.sub.3 or --OCHF.sub.2, and Y, L and Z are each, independently of one another, H or F.

Benzene derivatives, and a liquid-crystalline medium

The invention relates to novel halogenated benzene derivatives of the formula I ##STR1## in which n is 1 to 7 [sic], the rings A and B are each trans-1,4-cyclohexylene, or one of the rings A and B is alternatively 1,4-phenylene or 3-fluoro-l,4-phenylene, X is F, C1, CHF.sub.2, --CF.sub.3, --CN, --OCF.sub.3 or --OCHF.sub.2, Y and Z are each, independently of one another, H or F, r=1 or, in the case where s=1, B=trans-1,4-cyclohexylene and simultaneously X=--CHF.sub.2, --CF.sub.3, --OCF.sub.3 or --OCHF.sub.2, r is alternatively 0, and s=1 or, in the case where B=1,4-phenylene or 3-fluoro-1,4-phenylene, s=0.

Halogenated benzene derivatives, and a liquid-crystalline medium

The invention relates to the use of chiral and/or achiral compounds, containing at least one structural element from the group comprising

Media containing thiazole derivatives and thiadiazole derivatives and

The invention relates to optically active compounds of the formula I ##STR1## in which R is an alkyl or alkenyl radical having up to 15 carbon atoms which is unsubstituted, monosubstituted by --CN or at least monosubstituted by fluorine or chlorine, it also being possible for a CH.sub.2 group in these radicals to be replaced by --O--, --CO--, --O--CO--, --CO--O-- or --O--CO--O--,

Optically active compounds, and a liquid-crystalline phase

Benzene derivatives of the formula I ##STR1## in which n is 1 to 7, Q is --CO or --(CH.sub.2).sub.r --, where r is 1 to 5, s is 0, 1 or 2, t is 0 or 1, where s+t.gtoreq.1, X is F, Cl, --CF.sub.3, --CN, --OCF.sub.3 or --OCHF.sub.2, and Y, L and Z are each, independently of one another, H or F.

Benzene derivatives, and a liquid crystal medium

The invention relates to an electro-optical liquid crystal display element containing a dielectric with at least two liquid-crystalline components, wherein the dielectric, for shortening the switching times, contains at least one fluorine-containing compound of the formula I

Electro-optical liquid crystal display element

Growing community of inventors

Griesheim, Germany

Andreas Wachtler