2,2'-AZOIMIDAZOLDERIVATE, VERFAHREN FUER IHRE HERSTELLUNG, FLUESSIGKRISTALLINES MATERIAL UND EINE ELEKTROOPTISCHE VORRICHTUNG

PCT No. PCT/SU81/00059 Sec. 371 Date Mar. 23, 1982 Sec. 102(e) Date Mar. 23, 1982 PCT Filed Jun. 25, 1981 PCT Pub. No. WO82/00472 PCT Pub. Date Feb. 18, 1982.2,2-azimidazole derivatives of the formula: I II wherein R and R1 are H, a C1-C12 alkyl, a C1-C12 alkoxy; NO2; R2 is hydrogen, a C1-C3 alkyl;...

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Hauptverfasser:	BLINOV, LEV MIKHAILOVICH, SEVOSTYANOV, VLADIMIR PETROVICH, TITOV, VIKTOR VASILIEVICH, RUMYANTSEV, VLADIMIR GRIGORIEVICH, LAZAREVA, VALENTINA TIMOFEEVNA, NEFEDOV, VIKTOR ANDREEVICH, PRUDNIKOVA, ELENA KARLOVNA, SHOSHIN, VADIM MIKHAILOVICH, PLJUSNINA, TAMARA SERGEEVNA, IVASCHENKO, ALEXANDR VASILIEVICH
Format:	Patent
Sprache:	ger
Schlagworte:	ADHESIVES ADVERTISING CHEMISTRY CRYPTOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING DISPLAY DISPLAYING DYES EDUCATION FREQUENCY-CHANGING HETEROCYCLIC COMPOUNDS LABELS OR NAME-PLATES LAKES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MORDANTS NATURAL RESINS NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS ORGANIC CHEMISTRY ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES PAINTS PHYSICS POLISHES SEALS SIGNS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Zusammenfassung:	PCT No. PCT/SU81/00059 Sec. 371 Date Mar. 23, 1982 Sec. 102(e) Date Mar. 23, 1982 PCT Filed Jun. 25, 1981 PCT Pub. No. WO82/00472 PCT Pub. Date Feb. 18, 1982.2,2-azimidazole derivatives of the formula: I II wherein R and R1 are H, a C1-C12 alkyl, a C1-C12 alkoxy; NO2; R2 is hydrogen, a C1-C3 alkyl; n, m=1 to 3, but where n-m=1, R=R1=R2=H is excluded, are disclosed as well as a method for preparing these compounds by oxidation of a compound of the formula III wherein R, R1, R2, n and m are as identified above, except for the compound, wherein R=R2=R2=H, n=m=1. A liquid-crystal or mesomorphic material containing the 2,2'-azoimidazole compounds and electrooptical device comprised of such mesomorphic material are disclosed. The electrooptical devices are useful for systems of electronic representation and processing of information. The compounds therein have two spectrally spaced absorption bands in the visible part of their spectrum such that their position insures the contrast required for the human eye to be able to readily recognize the difference in color.