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US 11,618,981 B2Granted
Nylon floorcoverings employing vat dyestuffs and methods of making the same
AssigneeWilana Chemical LLC
InventorsDennis J. Jones, Jr., Ralph R. Sargent
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Abstract
In one aspect, floor coverings are described herein comprising nylon fibers dyed with at least one vat dyestuff, the dyed nylon fibers exhibiting enhancements to lightfastness, color fastness, wet fastness and/or resistance to household bleach.
Claims15
A method of making a floor covering comprising:
- providing nylon fibers;
- contacting the nylon fibers with a dyeing composition comprising at least one vat dyestuff in reduced form;
- and
- oxidizing the vat dyestuff applied to the nylon fibers by drying the nylon fibers in air at an elevated temperature, wherein the drying is done until a moisture content of the nylon fibers of 5% or less is achieved.
1 more element
Dependencies are inferred from the claim text.