Stain resistance of nylon carpet: cationic-dyeable nylon fibers dyed with acid dye
AssigneeBurlington Industries, Inc.
InventorWilliam G. Jenkins
Life of this patent
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Abstract
Stain-resistant nylon, especially cationic-dyeable carpet nylon, is prepared by dyeing cationic-dyeable nylon fibers with acid or premetalized dye. Lightfastness and depth of shade of an apparent value equal to acid dyeable nylons is obtained with superior stain resistance equal to commercially available solution dyed nylon carpeting.
Claims9
A process of dyeing cationic-dyeable nylon fibers comprising dyeing said fibers with an acid dye or a premetalized acid dye at a pH of from about 4.0 to about 6.5 and fixing the dye to the fibers.
A process or preparing a stain-resistant, light fast nylon carpet comprising dyeing cationic-dyeable nylon fibers with an acid dye or a premetalized acid dye at a pH of from 4.0 to 6.5 to impart the prequisite depth of shade to the nylon fibers and heating the dye-laden fibers to fix the dye into the fibers.
Nylon carpet having improved stain resistance composed of cationic-dyeable nylon fibers dyed at a pH of from about 4.0 to 6.5 with an acid or premetalized acid dye having substantially the same fastness to light as acid dyeable nylon dyed to the corresponding shade.
A nylon carpet composed of cationic-dyeable nylon and dyed at a pH of from about 4.0 to 6.5 to a predetermined depth of shade with an acid dye or a premetalized acid dye, the carpet being resistant to acid type stains and exhibiting improved fastness to light as compared to cationic-dyeable nylon dyed to a similar depth of shade with a cationic dye.
Dependencies are inferred from the claim text.