Stain resistance of nylon carpet
AssigneeBurlington Industries, Inc.
InventorWilliam G. Jenkins
Life of this patent
Estimating the term…
Abstract
Stain-resistant, lightfast nylon carpet is prepared by dyeing cationic-dyeable nylon fibers by applying a print paste containing an acid dye or a premetallized acid dye at a pH of from about 2.0 to about 6-5 and fixing the dye to the fibers, forming the printed nylon fibers into a carpet, applying a print paste containing an acid dye or premetallized acid dye and dyeing the nylon fibers contacted with the print pastes and thereafter heating the dyeladen fibers to fix the dye into the fibers. Stain-resistant lightfast nylon yarns are prepared by printing cationic-dyeable yarn with a premetallized acid dye at a pH of about 4.0 to less than about 6.5 then fixing the dye to the yarn.
Claims21
A process of preparing a stain-resistant, lightfast nylon carpet comprising the steps of:
- (a) dyeing cationic-dyeable nylon fibers by applying to said fibers a print paste containing an acid dye or a premetallized acid dye at a pH of from about 2.0 to about 6.5 and fixing the dye to the fibers,
- (b) forming the then printed nylon fibers into a carpet,
- (c) applying to the dyed nylon carpet a print paste containing an acid dye or premetallized acid dye and dyeing the nylon fibers contacted with the print paste;
- and thereafter
- (d) heating the dye-laden fibers to fix the dye into the fibers.
A process of preparing a stain resistant, multicolored, cationic dyeable nylon yarn comprising the successive steps of (a) applying to a cationic dyeable nylon yarn a print paste containing an acid dye at a pH of about 2.0 to less than 6.5 and fixing the acid dye to the yarn to produce a desired base shade;
- and (b) overprinting the dyed cationic dyeable yarn of step (a) by applying a print paste containing an acid dye or a premetallized acid dye to produce a multicolored stain-resistant nylon yarn.
A process of preparing a stain resistant, multicolored, cationic dyeable nylon yarn comprising the successive steps of (a) applying to a cationic dyeable nylon yarn a print paste containing a premetallized acid dye at a pH of about 2.0 to less than 6.5 and fixing the premetallized acid dye to the yarn to produce a desired base shade, (b) overprinting the dyed cationic dyeable yarn of step (a) by applying a print paste containing an acid dye or a premetallized acid dye to produce a multicolored stain-resistant nylon yarn.
A process of preparing stain-resistant, lightfast nylon yarn comprising printing cationic-dyeable yarn with a premetallized acid dye at a pH of about 4.0 to less than about 6.5 and fixing the dye to the yarn.
A process of dyeing heatset cationic-dyeable nylon yarn comprising printing said yarn with a premetallized acid dye at a pH of from about 2.0 to less than about 6.5 and fixing the dye to the yarn.
A process of preparing a stain-resistant, lightfast nylon yarn comprising printing heatset cationic-dyeable nylon yarn with a premetallized acid dye at a pH of from about 2.0 to less than about 6.5 to dye the nylon yarn and heating the dye-laden yarn to fix the dye into the yarn.
The process of dyeing 100% cationic dyeable nylon yarn comprising applying to said yarn a print paste containing at least one acid dye and devoid of cationic dyes at a pH of from about 2.0 to less than about 6.5 and fixing the dye to the cationic dyeable yarn.
A process of preparing a stain-resistant, lightfast nylon yarn comprising printing cationic-dyeable nylon yarn with an acid dye at a pH of from about 2.0 to less than about 6.5 to impart the requisite depth of shade to the nylon yarn and heating the dye-laden yarn to fix the dye into the yarn.
Dependencies are inferred from the claim text.