| 摘要 |
PURPOSE:To provide disazo compds. having a specified structure, which have excellent fastness to light, sublimation and water, etc., as well as excellent color rendering and homochromism and are suitable for use in dyeing hydrophobic fibers. CONSTITUTION:Disazo compds. of formula I (wherein X is H or methyl). Examples of hydrophobic fibers capable of being dyed with the compds. are those obtd. from polyesters wholly or mainly composed of polyethylele terephthalate, polycondensates of terephthalic acid with 1.4-bis(hydroxy methyl) cyclo-hexane, cellulose diacetate, cellulose triacetate, etc. At least one compd. of formula I is used to dye hydrophobic fibers blue to green.
|
