Dyeing experiment: Lab scale dyeing experiments were carried out
on wool fabrics using the produced dyes without mordanting. The
dye bath was prepared with the produced dye at a liquor ratio 50: 1
and with 1 g/l amphoteric leveling agent (Albegal B), pH was
adjusted to pH 1.0. Dyeing was started at 50°C for ten min., then the
dye bath temperature was raised to boil over 30 min and the dyeing
continued for 45 min. After dyeing the temperature was lowered to
60 °C, then the dyed samples were rinsed and washed off in an
aqueous solution 2 g/l non-ionic detergent (Hospital CV) at 60°C
using a liquor ratio 50: 1 for 30 mm, rinsed and dried.