Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...
Patent
1988-03-31
1989-07-18
Gron, Teddy S.
Compositions
Liquid crystal compositions
Containing nonsteryl liquid crystalline compound of...
2522996, 25229962, 25229963, 25229966, 350350R, 350350S, 544242, 544294, 544296, 544298, 544316, 544335, 549370, 549372, 549373, 558 17, 558 18, 558 19, C09K 1934, C09K 1930, C09K 1914, C07C16104, C07D31906, C07D23926
Patent
active
048491306
ABSTRACT:
Liquid crystalline ethane derivatives by the described method in order to form liquid crystalline compositions with known liquid crystalline compounds have a general formula I: ##STR1## wherein, if ring A idicates a 1,4-substituted benzene ring, then ring B indicates 1.4-substituted benzene ring or 1.4-trans-substituted cyclohexane ring or 1.4-substituted bicyclo[2,2,2]octane ring or 2.5-substituted pyrimidine ring or 2.5-substituted 1.3- dioxane ring, or if ring B indicates a 1.4-substituted benzene ring, then A indicates 1.4-trans-substituted cyclohexane ring or 1.4-substituted bicylo[2,2,2]octane ring or 2.5-substituted pyrimidine ring or 2.5-substituted 1.3-dioxane ring, and R indicates a normal alkyl chain C.sub.n H.sub.2n+1 or a non-branched alkoxy group C.sub.n H.sub.2n+1 O or an alkylcarboxylic group C.sub.n H.sub.2n+1 COO or an alkyl carbonato group C.sub.n H.sub.2n+1 OCOO or a branched alkyl chain CH.sub.3 --CH.sub.2 --CH(CH.sub.3)--(CH.sub.2).sub.k -- or a branched alkoxy group CH.sub.3 --CH.sub.2 --CH(CH.sub.3)--(CH.sub.2).sub.k --O, where n is an integer number and assumes values from 1 to 12, k is an integer number and assumes values from 1 to 3 and l and m assume values 1 or 0 fulfilling the condition that l+m>0, and if ring A denotes 1.4-disubstituted bicyclo[2,2,2] octane ring also l+m=0. Liquid crystalline compositions containing the compound of formula I are characterized by low viscosity and are applied in displays.
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Dabrowski Roman
Drzewinski Witold
Dziaduszek Jerzy
Parka Janusz
Sosnowska Bozena
Gron Teddy S.
Wojskowa Akademia Techniczna
Zaklady Kineskopowe "Unitra-Polkolor" Zaklady Kineskopow Kolorow
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