Dark blue active dye composition and application thereof in dyeing fibers

Abstract

The invention provides a dark blue active dye composition and application thereof in dyeing fibers. The dye composition comprises one or more of dye compounds shown in a general formula (1), and one or more of dye compounds shown in a general formula (2). The dark blue active dye composition has excellent dyeing property and various items of dyefastness, and excellent compatibility with other common red and yellow active dyes. Substituent groups in the general formulas (1) and (2) are shown in the specifications.

Description

technical field [0001] The invention relates to a reactive dye composition and its dyeing application on fiber materials, in particular to a dark blue reactive dye composition and its dyeing application on fiber materials. Background technique [0002] The development and research of dark blue reactive dyes has always been one of the hot spots in the dye industry. Not only is blue the most used of all the shades, but it is also a major component of blended black reactive dye compositions or mixtures. [0003] With the increasingly stringent requirements for printing and dyeing fabrics, dark blue reactive dyes must not only have excellent fastness, but also have good application properties, such as dyeing uptake, lifting, color fixation and compatibility. [0004] The blue active dye shown in the general formula (1) of the present invention has a kind of formazan containing copper metal Class (Formazan) dyes. In the late 1980s and early 1990s, major companies published re...

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Problems solved by technology

[0019] However, the above-mentioned patents still cannot satisfactorily solve the problems of low solubility of the above-mentioned dyes, unsatisfactory application properties such as level dyeing property, lifting property and color fixation rate.

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