Deep-dyed nylon fiber and dyed styling yarn
AssigneeE. I. Du Pont de Nemours and Company
InventorStanley Brooke Speck
Life of this patent
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Abstract
Deep-dyed nylon fiber and dyed styling yarn which have been dyed from an aqueous dye bath having a pH of 4-7 and containing novel orange and/or compatible yellow, orange, red, blue, blue-green or green disulfonated or monosulfonated/monocarboxylated monoazo, disazo or anthraquinone acid dyes which have good application and fastness properties on deep-dyeing nylon fiber and good non-staining properties on acid-modified nylon fiber.
Claims1
Styling yarn containing deep-dyed nylon fiber which has been dyed from an aqueous dye bath having a pH of 4-7 and which contains dyes selected from 2-3 of the following groups, wherein M in each group is a cation selected from H, Li, Na, K, NH.sub.4, di(hydroxy-C.sub.2.sub.-3 alkyl)-ammonium and tri(hydroxy-C.sub.2.sub.-3 alkyl)ammonium:
- 1. Yellow dye of the structure ##EQU3## wherein a. Ar is ##SPC9##
- R.sub.1 is Cl and R.sub.2 is SO.sub.3 M,
- b. Ar is ##SPC10##
- R.sub.1 is Cl and R.sub.2 is SO.sub.3 M, or
- c. Ar is ##SPC11##
- R.sub.1 is SO.sub.3 M and R.sub.2 is H;
- 2. orange dye of the structure ##SPC12##
- wherein R.sub.3 is H, CH.sub.3 or C.sub.2 H.sub.5 ;
- 3. orange dye of the structure ##SPC13##
- wherein R.sub.4 is C.sub.1.sub.-8 alkyl
- 4. Red dye of the structure ##SPC14##
- wherein one of R.sub.5 and R'.sub.5 is H and the other is C.sub.6 H.sub.5 CONH;
- 5. blue dye of the structure ##SPC15##
- wherein R.sub.6 is SO.sub.3 M and R.sub.7 is H, CH.sub.3, OCH.sub.3 or Cl, or R.sub.6 is p-NHCOCO.sub.2 H and R.sub.7 is H;
- and
- 6. Blue-green to green dye of the structure ##SPC16##
- wherein X is H or OH, R.sub.8 is H and R.sub.9 is C.sub.2 H.sub.5, C.sub.3 H.sub.7, OCH.sub.3 or OC.sub.2 H.sub.5, or R.sub.8 is CH.sub.3 and R.sub.9 is CH.sub.3 or OCH.sub.3.
Dependencies are inferred from the claim text.