Notes

Premetallized …

Premetallized Dye is a process for dyeing nylon with acid or premetallized acid dyes is provided wherein the dye bath is brought to a temperature of 160°F-230°F and a pH of 5.5-4.0, followed by the gradual addition of sulfamic acid to lower the pH to 3.7-2.25, thereby improving dye exhaustion.