Process for dyeing fibers or fabrics of aromatic polyamides

Details Process for dyeing fibers or fabrics of aromatic polyamides Process for dyeing fibers or fabrics of aromatic polyamides

1974-07-16

1976-04-27

Hoke, V. P.

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

Treating textiles or fibers from synthetic resin or natural...

8 93, 8178R, D06P 504

Patent

active

039531678

ABSTRACT:
Aromatic polyamide fibers or fabrics are dyed in a deep and brilliant color with good light fastness by impregnating the fibers or fabrics with (a) a cationic dye, (b) an aliphatic hydroxy compound having a boiling point of at least 180.degree.C., (c) at least one swelling agent selected from o-phenylphenol, p-phenylphenol, benzophenone, .alpha.-naphthol and .beta.-naphthol and (d) at least one of alkali metal salts or ammonium salts of inorganic or organic acids, the amount of the salt being 1 to 10% by weight based on the sum total of the amounts of (a), (b), (c) and (d), and then heat-treating the fibers or fabrics with steam.

REFERENCES:
patent: 3506990 (1970-04-01), Richardson et al.
patent: 3713769 (1973-01-01), Beal et al.
patent: 3790344 (1974-02-01), Frickenhaus et al.
patent: 3809533 (1974-05-01), Sievenpiper
Bulletin No. N-249 Published June 1971, DuPont Technical Information on Nomex Fibers.

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