Title:
DERIVATIVES OF ANTHRAQUINONE AS DICHROIC DYE FOR LIQUID-CRYSTAL MATERIAL, A LIQUID-CRYSTAL MATERIAL AND ELECTRO-OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/1988/003158
Kind Code:
A1
Abstract:
New derivative of anthraquinone of general formula (I), where A, B, D are, simultaneously or independently, groups -NHCOR1, -NHCOAlk, -OCOAlk, -OCOR1, -OH, -OAlk, -NHAlk, H, in which R1 are groups (a), (b), (c), (d), (e), (f), (g), (h), (i), (j), (k), R4 are groups (l), (m), (n), (o), (p), where Alk = C1-C18; R5 are groups (q), (r), (s), where Alk = C1-C18; R6 is hydrogen or Alk = C1-C8; R7 - Alk = C1-C8; R2, R3 are groups -Alk, -OAlk, -SAlk, where Alk = C1-C8 or R3-H, as a dichroic dye with negative dichroism for a liquid-crystal. A liquid-crystal material comprising a liquid-crystal matrix and a dichroic dye, the latter being at least one of the derivatives of anthraquinone of generale formula (I) in a quantity of 1-15 per cent by weight. An electro-optical device with a dichroic working body (1) made of the said liquid-crystal material included between transparent plates (2) on the internal sides of which electrodes (3) are placed provided with conductors (6) connected to a power source.
Inventors:
IVASCHENKO ALEXANDR VASILIEVIC (SU)
LAZAREVA VALENTINA TIMOFEEVNA (SU)
PRUDNIKOVA ELENA KARLOVNA (SU)
RUMYANTSEV VLADIMIR GRIGORIEVI (SU)
PLJUSNINA TAMARA SERGEEVNA (SU)
LAZAREVA VALENTINA TIMOFEEVNA (SU)
PRUDNIKOVA ELENA KARLOVNA (SU)
RUMYANTSEV VLADIMIR GRIGORIEVI (SU)
PLJUSNINA TAMARA SERGEEVNA (SU)
Application Number:
PCT/SU1987/000114
Publication Date:
May 05, 1988
Filing Date:
October 19, 1987
Export Citation:
Assignee:
IVASCHENKO ALEXANDR V (SU)
LAZAREVA VALENTINA T (SU)
PRUDNIKOVA ELENA K (SU)
RUMYANTSEV VLADIMIR G (SU)
PLJUSNINA TAMARA S (SU)
LAZAREVA VALENTINA T (SU)
PRUDNIKOVA ELENA K (SU)
RUMYANTSEV VLADIMIR G (SU)
PLJUSNINA TAMARA S (SU)
International Classes:
C09B1/36; C09B1/40; G02F1/137; C09B1/42; C09B1/44; C09B1/516; C09B1/54; C09K19/60; (IPC1-7): C09B1/36; C09K19/32
Foreign References:
| SU1089084A1 | 1985-06-07 |
Other References:
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, T108, Nr. 1-2, 1984, (GORDON AND BREACH SCIENCE PUBLISHERS, NEW YORK), A.V. IVASHCHENKO et al., "Heteroaromatic Azo Dyes Exhibiting Negative Dichroism in Liquid Crystals", pages 57-60.
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, T129, Nr. 1-3, 1985, (GORDON AND BREACH SCIENCE PUBLISHERS, NEW YORK), A.V. IVASHCHENKO et al., "Anthraquinone Dyes Exhibiting Negative Dichroism in Liquid Crystals 1. Derivatives of 1-Amino-and 1,4-Diaminoanthraquinones", pages 259-266.
A.V. IVASHCHENKO et al., "Anthraquinone Dyes Exhibiting Negative Dichroism in Liquid Crystals II. Derivatives of 1,4-Diamino-and 1-Amino-4-Hydroxy-Anthraquinones", pages 267, 270, 271.
A.V. IVASCHENKO et al., "Anthraquinone Dyes Exhibiting the Negative Dichroism in Liquid Crystals III. Derivatives of Diaminodihydroxyanthraquinones", pages 277, 278, 281.
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, T129, Nr. 1-3, 1985, (GORDON AND BREACH SCIENCE PUBLISHERS, NEW YORK), A.V. IVASHCHENKO et al., "Anthraquinone Dyes Exhibiting Negative Dichroism in Liquid Crystals 1. Derivatives of 1-Amino-and 1,4-Diaminoanthraquinones", pages 259-266.
A.V. IVASHCHENKO et al., "Anthraquinone Dyes Exhibiting Negative Dichroism in Liquid Crystals II. Derivatives of 1,4-Diamino-and 1-Amino-4-Hydroxy-Anthraquinones", pages 267, 270, 271.
A.V. IVASCHENKO et al., "Anthraquinone Dyes Exhibiting the Negative Dichroism in Liquid Crystals III. Derivatives of Diaminodihydroxyanthraquinones", pages 277, 278, 281.
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