Practice research of dyeing with novel low-alkaline reactive dyes

Aimed at the problem of excess alkali used in dyeing cotton fabrics with reactive dyes, a novel low-alkaline reactive dye was used to dye cotton fabrics. Less alkaline was needed in low-alkaline reactive dyes dyeing with a dosage of only 10%~15% comparing to traditional reactive dyes, which benefited to improve first-time success and soap wash. The amount of water and waste water treatment were reduced effectively. The dyed fabrics obtained high color yield and the lowalkaline reactive dyes dyeing process possessed short dyeing time and effective production efficiency.