Compositions – Liquid crystal compositions – Containing nonsteryl liquid crystalline compound of...
Patent
1985-06-28
1987-06-30
Torrence, Dolph H.
Compositions
Liquid crystal compositions
Containing nonsteryl liquid crystalline compound of...
2522991, 2522992, 549371, 549372, 549373, C09K 334, C09D31906
Patent
active
046769242
ABSTRACT:
New compounds of the general formula: ##STR1## wherein the symbols X stand for carbon atom bonded with two hydrogen atoms /--CH.sub.2 -- group/ and the symbols Z stand for oxygen atom or the symbols X stand for oxygen atom and the symbols Z stand for carbon atom bonded with two hydrogen atoms /--CH.sub.2 -- group/, m is an integer of 1 to 2, R represents an alkyl /H.sub.2n+1 C.sub.n / or an 4-alkylphenyl /H.sub.2n+1 C.sub.n --C.sub.6 H.sub.4 / or an alkylbiphenyl /H.sub.2n+1 C.sub.n --C.sub.6 H.sub.4 --C.sub.6 H.sub.4 / or an alkylcyclohexylphenyl group /H.sub.2n+1 C.sub.n --C.sub.6 H.sub.10 --C.sub.6 H.sub.4 /, the term alkyl group signifies an alkyl chain containing 1 to 15 carbon atoms or it also signifies a branched-chain alkyl group C.sub.2 H.sub.5 --CH/CH.sub.3 /--/CH.sub.2 /.sub.k where k in an integer of 1 to 3, have utility as liquid crystals. A process for manufacture of compounds of the general formula I. Liquid crystalline admixtures containing those compounds and a way of selection of their compositions to obtain the admixtures which exhibit smectic, smectic and nematic or only smectic properties as well as their use in electrooptical devices is described.
REFERENCES:
patent: 4322354 (1982-03-01), Sorkin
patent: 4344856 (1982-08-01), Demus et al.
Mol. Cryst. Liq. Cryst., vol. 102, (letters), pp. 155-160 4-/Trans-4-n-Alklycycyohixyl/Isothiocyanatobenzenes A New Class of Low-Melting Stable Nematics, R. Dabrowski.
Adamska Gabriela
Dabrowski Roman
Dziaduszek Jerzy
Kenig Krystyna
Stolarz Zofia
Torrence Dolph H.
Wojskowa Akademia Techniczna
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