| 摘要 |
PURPOSE:To prepare the titled composition having clear yellow displaying color, excellent dichromism, and high light-resistance, and suitable for the display device of watch, electronic calculator, etc., by dissolving a perylenedicarboxylic acid ester compound having a specific structural formula as a dye in a liquid crystal. CONSTITUTION:The objective compound can be prepared by dissolving (A) a perylenedicarboxylic acid ester fo formulaI[R1 and R'1 are cyclohexyl, cyclohexyl- phenyl, phenyl, etc. which may have substituent groups such as halogen, alkyl, etc., or group of formula II (AlK is 1-15C alkylene; X is 1-15C alkoxy, nitrile, or phenyl which may have substituent groups such as halogen, 1-4C lower alkyl, nitrile, etc)]as a dye in (B) a nematic liquid crystal (e.g. a mixture of 43% of 4- cyano-4'-n-pentylbiphenyl, 17% of 4-cyano-4'-n-propoxybiphenyl, etc.). The amount of the (A) component is 0.01-5% based on (B). EFFECT:A medium tone can be obtained by combining with an anthraquinone dye having high light-resistance. |
