Composite active black dye

Abstract

The invention relates to a composite active black dye, which is characterized in that the dye is compounded by four dyes shown in formula (1), formula (2), formula (3) and formula (4) according to parts by weight of 80-84, 6-10, 1-3 and 6-10, has high responsiveness, good color fixing capability and excellent deep dyeing property, and is suitable for dyeing cotton fiber.

Description

technical field [0001] The invention relates to a dye, especially a composite reactive black dye. Background technique [0002] In recent years, the printing and dyeing industry has adopted the most widely reactive black, and most of them are compounded by adding C.I reactive orange 78 to C.I reactive black 5. Although the principle of complementary color has been used to improve the blackness of commercial dyes, it is still in the dyeing process. There are still several shortcomings: ①The blackness is not full enough; ②Because C.I reactive black 5 and C.I reactive orange 78 contain different types of active groups, the directness of the two to the fiber, dyeing temperature, bath ratio, and dyeing accelerator There are large individual differences in the sensitivity of salts, color fixing agent alkalis, and pH value, so it is difficult to guarantee level dyeing and reproducibility; ③A certain application performance needs to be improved, such as color fixing rate, solubility...

AI Technical Summary

Problems solved by technology

[0002] In recent years, the printing and dyeing industry has adopted the most widely reactive black, and most of them are compounded by adding C.I reactive orange 78 to C.I reactive black 5. Although the principle of complementary color has been used to improve the blackness of commercial dyes, it is still in the dyeing process. There are still several shortcomings: ①The blackness is not full enough; ②Because C.I reactive black 5 and C.I reactive orange 78 contain different types of active groups, the directness of the two to the fiber, dyeing temperature, bath ratio, and dyeing accelerator There are large individual differences in the sensitivity of salts, color fixing agent alkalis, and pH value, so it is difficult to guarantee level dyeing and reproducibility; ③A certain application performance needs to be improved, such as color fixing rate, solubility, lifting rate, Dyeing depth, rubbing fastness, etc.

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