Composition for liquid crystal color display element
AssigneeMitsui Toatsu Chemicals, Inc.
InventorsRyoichi Morinaka, Ryoichi Tukahara, Tsutomu Nishizawa, Tuneo Hidaka
Life of this patent
Estimating the term…
Abstract
A composition for nematic liquid crystal color display elements, said composition comprising at least one anthraquinonic dye represented by the formula ##STR1## wherein X and X' are the same and represent --NH.sub.2 or --OH, and R represents a linear or branched alkyl group having 1 to 15 carbon atoms, a cyclohexyl group or a group of the formula --R.sub.2 --O--R.sub.3 in which R.sub.2 is an alkylene group having 1 to 3 carbon atoms and R.sub.3 is a linear or branched alkyl group having 1 to 15 carbon atoms dissolved in at least one nematic liquid crystal.
Claims8
A composition for nematic liquid crystal color display elements, said composition comprising at least one nematic liquid crystal and at least one anthraquinonic dye represented by the formula ##STR39## wherein X and X' are the same and represent --NH.sub.2 or --OH, and R represents a linear or branched alkyl group having 1 to 15 carbon atoms, a cyclohexyl group or a group of the formula --R.sub.2 --O--R.sub.3 in which R.sub.2 is an alkylene group having 1 to 3 carbon atoms and R.sub.3 is a linear or branched alkyl group having 1 to 15 carbon atoms, said anthraquinone dye being dissolved in the nematic liquid crystal.
Dependencies are inferred from the claim text.