Process for the level, isothermal high-temperature dyeing of hydrophobic synthetic fibers with disperse dyestuffs

摘要

Exhaust process for the isothermal high-temperature dyeing of textile material made of hydrophobic synthetic fibers in a closed dyeing system with water-insoluble disperse dyestuffs, according to which the disperse dyestuff predispersed in water of 40 DEG to 60 DEG C is introduced into the aqueous bath free of dyestuff that is already circulating and heated together with the material to a dyeing temperature within the range of from 115 DEG to 140 DEG C and adjusted to pH 4 - 6, which comprises evaluating the number of the bath circulations per minute by measuring it and the amount of dyestuff exhausted onto the fiber at the same time, and introducing the predispersed dyestuff in doses into the dyebath, depending on the obtained measuring values.