Process for the continuous dyeing of industrial nylon

Details Process for the continuous dyeing of industrial nylon Process for the continuous dyeing of industrial nylon

1987-04-28

1989-11-07

Niebling, John F.

Bleaching and dyeing; fluid treatment and chemical modification

Confined gas phase superatmospheric pressure dyeing process

Steam

8924, D06P 0000

Patent

active

048789208

ABSTRACT:
Described is a process for continuously dyeing high tenacity nylon 6,6 fabrics including the sequential steps of applying to a high tenacity, highly crystalline nylon 6,6 fabric whose fibers have a breaking tenacity in the range of 6.0 to 10 g/denier and an aqueous dyebath containing a tinctorial amount of at least one dye. The dyed fabric is then steamed with superheated steam at atmospheric pressure and at temperatures greater than 100.degree. C., e.g., 100.degree. to 160.degree. C., for a time sufficient to fix the dye to the fabric, usually up to 3 minutes. Following steaming, the dyed fabric is washed to remove any unfixed dye, then dried.

REFERENCES:
patent: 2474890 (1945-12-01), Croft
patent: 2888313 (1959-05-01), Mautner
patent: 3253875 (1966-05-01), Baumann
patent: 3433008 (1969-03-01), Gage
patent: 3503698 (1970-03-01), Zurbuchen et al.
Bauerle, "Dye Fixation with Superheated Steam", Ciba Geigy Review, No. 4, pp. 27-37 (1973).
"The Theory of Coloration of Textiles", Dyers Company Publications Trust, 1975.
Textile Horizons, 1984, 4, No. 8, Aug., p. 12.

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