Process for dyeing black wool with high washing fastness and high rubbing fastness

Abstract

The invention discloses a process for dyeing black wool with high washing fastness and high rubbing fastness, and relates to the field of wool dyeing. The process comprises the following steps of adding 6% of sulfuric acid (calculated according to wool yarn) at normal temperature, carrying out level dyeing for 15min, and heating to 50 DEG C at the speed of 1 DEG C / min; adding 7% of ATT black, carrying out level dyeing for 15min, heating to 100 DEG C at the speed of 1 DEG C / min, keeping the temperature for 90min, and discharging water; adding 3% of detergent, heating to 90 DEG C at the speed of1 DEG C / min, keeping the temperature for 10min, and discharging water; and heating to 40 DEG C at the speed of 1 DEG C / min. According to the process disclosed by the invention, the acid dye ATT blackis added into the wool, sulfonic acid groups and carboxyl groups contained in dye molecules are bonded with amino groups in protein fiber molecules through ionic bonds in an acid medium, detergent soaping is carried out for 10 minutes before color fixing operation is carried out, finally, fixation is conducted by adding color fixing agent ALBAFIX ECO at 40 DEG C, drying treatment is conducted after fixation is finished, the rubbing fastness of the improved wool product is 4.5 levels or above, the washing fastness of the improved wool product is 4 levels or above, and the problems of rubbing fastness and washing fastness are solved.

Description

Technical field [0001] The invention relates to the technical field of dyeing and finishing, in particular to a process for dyeing black wool with high washing fastness and high rubbing fastness. Background technique [0002] In recent years, with the improvement of people’s living standards and the rapid changes in wool products, the production and consumption of wool fabrics have increased. Acid dyes and acid mordant dyes are commonly used dyes for dyeing wool, while acid mordant dyes are due to their It is widely used in China because of its low price and excellent color fastness. However, the dark color acid mordant dyes have an unsatisfactory rubbing fastness to wool. During the use of clothes, especially when mixed with light-colored clothes, it is easy to cause staining. Color phenomenon, and countries all over the world have higher requirements for the dry rubbing fastness of imported textiles, which has a great negative impact on China’s textile exports. After dyeing woo...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the improvement of people's living standards and the rapid changes in wool products, the production and consumption of wool fabrics are increasing. Acid dyes and acid mordant dyes are commonly used dyes for dyeing wool, and acid mordant dyes are due to their It is widely used in China due to its low price and excellent color fastness. However, the rubbing fastness of dyed wool with dark-colored acid mordant dyes is not ideal. During the use of clothes, especially when mixed with light-colored clothes, it is easy to cause stain color phenomenon, and countries all over the world have high requirements for the dry rubbing fastness of imported textiles, which has a great negative impact on my country's textile exports, and after dyeing wool fabrics, it needs to be tested to determine Washing fastness, rubbing fastness, light fastness, etc. of wool after dyeing

[0003] In the existing wool dyeing process, after the wool is tested, it is not that the washing fastness is good, but the rubbing fastness cannot be achieved, that is, the rubbing fastness is good, and the washing fastness cannot be achieved. At the same time, it is necessary to optimize the dyeing process of wool to meet the quality fastness of wool after dyeing and meet the use standards

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