Patent ID: 6193764
Filing Date: 2001-02-27
Classification: D06L,D06P,Y10S

Abstract:
A process for dyeing cellulosic containing textile materials with fiber reactive dyestuffs comprising successively the stages of:(a) scouring the textile material in a scouring bath which comprises a scour assistant that is stable to high alkali; and a stable buffered alkaline material that permits proper pH to the scouring bath, said scouring bath having a pH of from about 8 to about 11;(b) dropping the scouring bath and without rinsing adding first acetic acid and then a dye assist system comprising sodium meta nitrobenzene sulfonate and sodium polyacrylate;(c) adding a dyestuff formula containing at least one fiber reactive dyestuff;(d) adding from about 5 to about 200 grams of electrolyte per liter of said dye bath;(e) adding after the required dyeing temperature of the dyestuffs has been reached, a stable buffered alkaline material to said dye bath that permits proper fixation of dyestuff, said dye bath having a pH of from about 8 to about 12.5;(f) subjecting said material to said dye bath; and(g) thereafter cold water rinsing, after-scouring with acetic acid and an after-scouring agent at a temperature of from about 80.degree. C. to about 105.degree. for a time period of about 5 to about 20 minutes, optionally hot water rinsing, and finally cold water rinsing said material,whereby from the scouring through the after-scouring's final rinse of said cellulosic containing textile material up to six water baths are used and the elapsed time is less than five hours.