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Inventor:
Kirsch; Peer
Address:
Seeheim-Jugenheim, DE
No. of patents:
25
Patents:












Patent Number Title Of Patent Date Issued
8124817 Process for the preparation of ring compounds February 28, 2012
In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid
7842845 Process for the preparation of ring compounds November 30, 2010
In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid
7786332 Process for the preparation of ring compounds August 31, 2010
In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid
7678431 Photostable liquid-crystalline medium March 16, 2010
The invention relates to a photostable liquid-crystalline medium comprising at least one compound of the formula I ##STR00001## and at least one compound of the formula II ##STR00002## and to the use thereof for electro-optical purposes, and to displays containing this medi
7449222 Liquid-crystalline medium November 11, 2008
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, comprising at least one pyran compound of the formula I ##STR00001## and one or more compounds selected from the group consisting of the compounds C1 to C9 #
7425356 Chiral compounds September 16, 2008
The invention relates to chiral compounds of formula I wherein X.sup.1, X.sup.2, X.sup.1, X.sup.2, x.sup.1, x.sup.2, y.sup.1, y.sup.2, B, C, U.sup.1, U.sup.2, V.sup.1, V.sup.2, W.sup.1 and W.sup.2 have the meaning given in claim 1, to liquid crystal mixtures comprising at least one c
7411100 Process for the preparation of ring compounds August 12, 2008
In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid
7223450 Chiral compounds May 29, 2007
The invention relates to chiral compounds of formula I wherein X.sup.1,X.sup.2,X.sup.1,X.sup.2,x.sup.1,x.sup.2,y.sup.1,y.sup.2,B,C,U.sup- .1,U.sup.2,V.sup.1,V.sup.2,W.sup.1 and W.sup.2 have the meaning given in claim 1, to liquid crystal mixtures comprising at least one chiral compoun
7211302 Photostable liquid crystalline medium May 1, 2007
The invention relates to a photostable liquid-crystalline medium comprising at least one compound of the formula I ##STR00001## and at least one compound of the formula II ##STR00002## and to the use thereof for electro-optical purposes, and to displays containing this medi
7198828 Liquid-crystalline medium April 3, 2007
The invention relates to a liquid-crystalline medium which is characterized in that it comprises one or more compounds of the formula A ##STR00001## and at least one compound of the formula B ##STR00002## in which R.sup.a, R.sup.b, Y, Z.sup.1, Z.sup.2, L.sup.1, L.sup.2, L.sup.3, L.
7189440 Liquid-crystalline medium March 13, 2007
The invention relates to a liquid-crystalline medium comprising at least one pyran compound of the formula I ##STR00001## and one or more compounds selected from the group consisting of the compounds C-1 to C-5 ##STR00002## in which the R, R.sup.1, the rings A, B and P, L.sup.1-6,
7183447 Process for the preparation of ring compounds February 27, 2007
In a process for the preparation of ring compounds via a combinatorial synthesis, the reaction procedure is based on a Suzuki coupling, subsequent halo-demetallation and finally a further Suzuki coupling. The Suzuki couplings are each carried out with a boronic acid or a boronic acid
7175891 Liquid-crystalline medium February 13, 2007
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterized in that it comprises one or more compounds of the formula I ##STR00001## and one or more compounds of the formula IA ##STR00002## in which R.sup.1
7153550 Liquid crystalline medium and liquid crystal display December 26, 2006
The instant invention relates to liquid crystalline media comprising a dielectrically positive component, component A, consisting of dielectrically positive compounds, comprising one or more compounds of formula I and one or more compounds of formula II ##STR00001## wherein the para
7135210 Liquid crystal compounds November 14, 2006
The invention relates to liquid crystal compounds of formula (I), where X.sup.1, X.sup.2, X.sup.3, Z.sup.1, Z.sup.2, L.sup.1, L.sup.2, L.sup.3, L.sup.4, L.sup.5, L.sup.6, L.sup.7, L.sup.8, L.sup.9, L.sup.10, L.sup.11 and a have the meanings given in claim 1, and liquid crystal media
7105210 Liquid-crystalline medium September 12, 2006
A liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, which contains one or more compounds of the formula I ##STR00001## and one or more compounds of the formula IA ##STR00002## in which R.sup.1, R.sup.2, ring A, L.sup.1-8, Z.sup.1, X.
7078079 Liquid-crystalline medium July 18, 2006
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterised in that it comprises one or more compounds of the general formula I ##STR00001## in which R.sup.1, ##STR00002## L.sup.1, L.sup.2, L.sup.3, L.sup.4,
7056561 Liquid-crystalline medium June 6, 2006
The invention relates to a liquid-crystalline medium based on a mixture of polar compounds of positive dielectric anisotropy, characterised in that it comprises one or more ester compounds of the formula I ##STR00001## and one or more compounds of the formula IA ##STR00002## in which
7022865 Pyrans as liquid crystals April 4, 2006
A tetrahydropyran derivative comprising at least three cyclic rings and one aromatic endgroup of the formula A ##STR00001## a process for preparing said tetrahydropyran derivatives, and the use of said tetrahydropyran derivatives as a component in a liquid crystal composition.
6974607 Pyrans as liquid crystals December 13, 2005
Tetrahydropyran derivatives having at least one ester group (--CO--O--) and at least one group --CN, --NCS, ##STR1##--F, --Cl, --OCHF.sub.2, --OCF.sub.3, --CF.sub.3, --OCHFCF.sub.3, --OCF.sub.2 CHFCF.sub.3, SF.sub.5, or --OCF.sub.2 CF.sub.3 ; a process for preparing said tetrahydropy
6908645 Liquid-crystalline medium June 21, 2005
The invention relates to liquid-crystalline compounds of the formula I and to a liquid-crystalline medium based on a mixture of polar compounds, characterized in that it comprises one or more compounds of the general formula I ##STR1##in which R.sup.1, ##STR2##L.sup.1, L.sup.2, L
6902777 Liquid-crystalline medium June 7, 2005
A liquid-crystalline mediums which contain one or more compounds of the formula A ##STR1##and at least one compound of the formula B ##STR2##wherein compounds of formula A contain at least one ring selected from ##STR3##and in which R.sup.a, R.sup.b, ring A and ring B, Y, Z.sup.1, Z.
6875894 Bis(alkylthio)carbenium salts April 5, 2005
The invention relates to bis(alkylthio)carbenium salts of the formula I ##STR1##with the stated definitions for R.sup.1, R.sup.2, R.sup.3 and Y.sup.-,and to a process for the preparation thereof. The compounds according to the invention are advantageously suitable as electrophilic reagents f
6858267 Liquid-crystalline medium having high birefringence and light stability February 22, 2005
The invention relates to a liquid-crystalline medium comprising one or more compounds of the general formula (I) ##STR1##in which R is an alkyl radical, alkoxy radical or alkenyl radical having from 1 to 7 or 2 to 7 carbon atoms respectively, in which one or more CH.sub.2 groups may
6780477 Liquid crystalline compounds August 24, 2004
The invention relates to liquid-crystalline compounds of the formula I ##STR1##in which R.sup.1, R.sup.2, A.sup.1, A.sup.2, A.sup.3, A.sup.4, Z.sup.1, Z.sup.2, a, b and c are as defined in claim 1, and to liquid-crystalline media comprising at least compound of the formula I and to el










 
 
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