| abstract |
PCT No. PCT/JP85/00644 Sec. 371 Date Jul. 18, 1986 Sec. 102(e) Date Jul. 18, 1986 PCT Filed Nov. 19, 1985 PCT Pub. No. WO86/03215 PCT Pub. Date Jun. 5, 1986.Provided are novel dichroic azo dyestuffs, which contain skeletons represented by the following general formula: <IMAGE> at one terminals of the long axes of the molecules of the azo dyestuffs, and liquid crystal compositions containing the dichroic azo dyestuffs in forms dissolved in liquid crystals. These dichroic azo dyestuffs have large dichroic ratios and high durability, and their compositions are employed as useful display devices. |