Process for improving dyeability

Details Process for improving dyeability Process for improving dyeability

1975-10-09

1977-06-21

Woo, Jay H.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 17, 264 78, 264136, 264210F, 264290N, D06P 100

Patent

active

040308804

ABSTRACT:
Synthetic polycarbonamide filaments having more uniform acid dyeability are prepared in a melt-spinning and drawing process by applying a dye leveling agent to the filaments in a spin finish prior to drawing. Dye uniformity is improved with washfast, rate-sensitive acid dyes. The filaments may be processed conventionally prior to dyeing. Effective agents include sodium dodecyldiphenylether disulfonate and sulfated butyl oleate.

REFERENCES:
patent: 3091805 (1963-06-01), Dusenburg
patent: 3233019 (1966-02-01), Adams
patent: 3538151 (1970-11-01), Baumann et al.
patent: 3684426 (1972-08-01), Bindler
patent: 3713768 (1973-01-01), Wegmuller et al.
patent: 3850658 (1974-11-01), Gomez et al.
patent: 3940544 (1976-02-01), Marshall et al.

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