A METHOD OF IMPARTING STAIN RESISTANCE TO A DIFFERENTIALLY DYEABLE TEXTILE SURFACE AND THE ARTICLE PRODUCED THEREBY

摘要

A method of treating articles having a textile surface (such as broadloom carpets or carpet tiles) with a stainblocker composition is disclosed. In on e embodiment a pile surface structure having pile elements containing nylon yarns having both acid dyeability and cationic dyeability is dyed with both acid dye and cationic dye and then passed through a hot stainblocker treatme nt bath and cooling zone. Substantially the entire height of each pile element is coated with a stainblocker composition whereby the pile surface structure ha s a stain resistance of 9 or higher on the AATCC Red 40 Stain Scale. The resulting pile surface has good color separation and stability, and no color loss from the catatonically dyeable yarns. In another embodiment, after coloring, a stainblocker composition having a temperature from twenty to ninety-five degrees Celsius (20 to 95 ~C) is applied. If the articles are carpet tiles, the stainblocker is applied using a flood process. The article is dried in a drying zone having a temperature in the range from seventy-fiv e degrees Celsius to ninety-five degrees Celsius (75-95 ~C) for a time sufficient to allow the stainblocker composition to react with the nylon yar n in the textile surface. Preferably, in infra-red oven is used to define the drying zone.