antrachinonderivat as dichroitisches färbungsmittel for a liquid crystalline material, a liquid crystalline material and a elektrooptische establishment

摘要

PCT No. PCT/SU87/00114 Sec. 371 Date Jun. 8, 1988 Sec. 102(e) Date Jun. 8, 1988 PCT Filed Oct. 19, 1987 PCT Pub. No. WO88/03158 PCT Pub. Date May 5, 1988.A novel anthraquinone derivative is proposed, of the general formula IMAGE /1/ where A,B,D are simultaneously or independently groups -NHCOR1, -NHCOAlk, -OCOAlk, -OCOR1, -OH, -OAlk, -NHAlk, H, wherein R1 is groups IMAGE IMAGE IMAGE IMAGE +TR IMAGE R4 is groups IMAGE +TR IMAGE where Alk=C1-C18; R5 is groups IMAGE where Alk=C1-C18; R6 is hydrogen or -Alk=C1-C8; R7-Alkyl=C1-C8; R2, R3 are groups -Alk, -OAlk, -SAlk, where Alk=C1-C8 or R3 - H, as a dichroic dye with negative dichrosim for a liquid-crystal material. Also proposed is a liquid-crystalline material containing a liquid-crystalline matrix and a dichroic dye representing at least one anthraquinone derivative of general formula /1/ taken in amount 1-15 mass %. An electrooptical device is proposed with a dichroic working body (1) made of said liquid-crystal material placed between transparent plates (2) on the inner sides of which electrodes (3) are located, fitted with conductors (6) connected to a power supply.