Dyeing of wool with high-affinity colloidal dyestuffs and di-ammonium phosphate

Claim 1

THE PROCESS FOR THE DYEING OF WOOL WITH THE HIGH AFFINITY COLLOIDAL WOOL DYES WHICH COMPRISES FORMING A DISTINCTLY ALKALINE DYE-BATH BY ADDING TO WATER A HIGH AFFINITY COLLOIDAL WOOL DYE AND AN AMOUNT OF DIAMMONIUM PHOSPHATE BETWEEN ABOUT 0.1% AND 0.5 OF THE WEIGHT OF THE BATH AND BETWEEN ABOUT 2% AND 6% OF THE WEIGHT OF THE WOOL TO BE DYED, WHEREIN THE HIGH AFFINITY COLLOIDAL WOOL DYE IS PRESENT AS A DISPERSION, IMMERSING THE WOOL IN SAID DYE-BATH AT ROOM TEMPERATURE, HEATING THE BATH SLOWLY BELOW ITS BOILING TEMPERATURE FOR ABOUT ONE TO ONE AND ONE HALF HOURS WHILE MAINTAINING THE PH OF THE BATH DISTINCTLY ALKALINE, RETAINING DYESTUFF IN DISPERSED FORM IN THE BATH AND INHIBITING DYESTUFF FIXATION ON THE WOOL, WHEREBY THE WOOL FIBER IS SWOLLEN AND THE DYESTUFF PARTICLES ARE EVENLY DISTRIBUTED THERETHROUGH, AND THEN BRINGING THE BATH TO THE BOIL AND MAINTAINING IT AT THE BOIL AS IT BECOMES DISTINCTLY ACID BY THE LIBERATION OF AMMONIA, THUS CAUSING FIXATION OF THE DYESTUFF PARTICLES ON THE WOOL EVENLY DISTRIBUTED THERETHROUGH.