Publication number: 20050056812
Abstract: Compounds of the general formula (I) where: R1, R2 are each independently a) H b) -M1-A1-R5 c) a straight-chain or branched alkyl radical having from 1 to 16 carbon atoms or a straight-chain or branched alkenyl radical having from 2 to 16 carbon atoms, where c1) one or more nonadjacent and nonterminal CH2 groups may be replaced by —O—, —C(?O)O—, —O—C(?O)—, —O—C(?O)—O—, —C(?O)— or —Si(CH3)2—, and/or c2) one CH2 group may be replaced by —C?C—, cyclopropane-1,2-diyl, cyclobutane-1,3-diyl, cyclohexane-1,4-diyl or phenylene-1,4-diyl, and/or c3) one or more hydrogen atoms may be replaced by F and/or Cl, p, q are each independently 0 or 1 G1-G2 is —CH2CH—, —CH?C—, —CH2CH2CH— or —CH?CH—CH— M1 is —CO—O—, —O—CO—, —CH2—O—, —O—CH2—, —CF2—O—, —O—CF2—, —CH?CH—, —CF?CF—, —C?C—, —CH2—CH2—CO—O—, —O—CO—CH2—CH2—, —CH2—CH2—, —CF2—CF2—, —(CH2)4—, —OC(?O)CF?CF— or a single bond, A1 is 1,4-phenylene where one or two hydrogen atoms may be replaced by F, Cl, CN and/or OCF3, or up to three hydrogen atoms may be replaced
Type:
Application
Filed:
July 30, 2004
Publication date:
March 17, 2005
Inventors:
Rainer Wingen, Barbara Hornung, Wolfgang Schmidt
Patent number: 6759103
Abstract: The invention relates to compounds of the formula (I) and also liquid-crystal mixtures comprising these compounds, and their use in liquid-crystal displays:
in which
R1 is H, F, CF3, OCF3, OCF2H, OCFH2, an alkyl radical or alkyloxy radical or an alkenyl radical or alkenyloxy radical,
R2 is H, an alkyl radical or alkyloxy radical or an alkenyl radical or alkenyloxy radical,
M1 and M2 are —C(═O)O—, —OC(═O)—, —CH2O—, —OCH2—, —OCF2—, —CF2O—, —C≡C—, —CH2CH2—, —CF2CF2—, —CF═CF—C(═O)O— or a single bond
A1 and A2 are &agr;-1,4-diyl, unsubstituted or mono- or disubstituted by F; where &agr; is: phenylene cyclohexane, 1-cyclohexene,
or 1,3-dioxane-2,5-diyl
m and n are zero or 1; m+n=0 or 1
L1, L2, L3, L4 and L5 are H or F.
Type:
Grant
Filed:
September 12, 2002
Date of Patent:
July 6, 2004
Assignee:
Clariant Financi (BVI) Limited
Inventors:
Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
Patent number: 6737125
Abstract: Compounds of the formula (I), liquid-crystal mixtures comprising these compounds, and their use in liquid-crystal displays:
in which
R1 is H, F, CF3, OCF3, OCF2H, OCFH2, an alkyl radical or alkyloxy radical or an alkenyl radical or alkenyloxy radical;
R2 is H, an alkyl radical or alkyloxy radical or an alkenyl radical or alkenyloxy radical
M1 is —C(═O)O—, —OC(═O)—, —CH2O—, —OCH2—, —OCF2—, —CF2O—, —C≡C—, —CH2CH2—, —CF2CF2—, —CF═CFC(═O)O— or a single bond
M2 is —C(═O)O—, —OC(═O)—, —CH2O—, —OCH2—, —CH2CH2—, —CF2CF2— or a single bond;
A1 and A2 are &agr;-1,4-diyl, unsubstituted or mono- or disubstituted by F; where &agr; is: phenylene, cyclohexane, 1-cyclohexene or 1,3-dioxane-2,5-diyl;
m and n are zero or 1; m+n=0 or 1
L1, L2, L3, L4 and L5 are H or F.
Type:
Grant
Filed:
September 12, 2002
Date of Patent:
May 18, 2004
Assignee:
Clariant Finance (BVI) Limited
Inventors:
Barbara Hornung, Wolfgang Schmidt, Rainer Wingen
