STAIN RESISTANCE OF NYLON CARPET

摘要

Cationic-dyeable carpet nylon is prepared by dyeing cationic-dyeable nylon fibers with acid or premetallized dye. The purpose of this process is to improve lightfastness and depth of shade and increase stain resistance so that the cationic-dyeable nylon is comparable to commercially available solution dyed nylon carpet. The figure is a graph plotted from the data of Table III of example 7 showing the premetallized acid dyeing of 12 samples of type 494 cationic dyeable nylon prior to heatsetting. It compares lightness/darkness (D/L) over the pH range of 2 to 10.