Process for dyeing cationic dyeable polyamide fiber
AssigneeRonile, Inc.
InventorGeoffrey Boyes
Life of this patent
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Abstract
A continuous dyeing, space dyeing or printing process for dyeing cationic dyeable polyamide fibers comprising the steps of applying a premetalized acid or acid dye to the fiber at a pH of 2.5 and below, and the dyed polyamide fiber resulting therefrom. The dyeing process generates cationic dyeable polyamide fiber dyed or printed in light to deep shades without bleeding and without producing badly contaminated dye water effluent.
Claims11
A process for dyeing a cationic dyeable polyamide fiber by continuous dyeing, space dyeing wherein a length of the fiber is contacted at intermittent spaces along its length with a dye, or a printing process which comprises applying a premetalized acid or acid dye as defined by the Colour Index to the fiber at a pH of 2.5 or below.
A process for dyeing a cationic dyeable polyamide fiber by printing or space dyeing wherein a length of the fiber is contacted at intermittent spaces along its length with a dye which comprises applying a premetalized acid or acid dye as defined by the Colour Index to the fiber at a pH of 2.5 or below.
A process for dyeing nylon carpet fibers by a space dyeing technique wherein a length of fiber is contacted at intermittent spaces along its length with a dye which comprises applying a premetalized acid or acid dye as defined by the Colour Index to the nylon carpet fibers at a pH of 2.5 or below.
A process for printing nylon carpet comprising applying a premetalized acid or acid dye as defined by the Colour Index to the nylon carpet at a pH of 2.5 or below.
Dependencies are inferred from the claim text.