Bleaching and dyeing; fluid treatment and chemical modification – Inorganic additive for dye composition – dye composition... – Ammonium salt
Patent
1981-03-18
1983-04-26
Clingman, A. Lionel
Bleaching and dyeing; fluid treatment and chemical modification
Inorganic additive for dye composition, dye composition...
Ammonium salt
8680, 8924, 8929, D06P 306, D06P 167
Patent
active
043811868
ABSTRACT:
A process is described for the fast dyeing of textile materials constitut at least to a significant degree, by polyamides, in particular quick dyeing polyamides, characterized in that a dye bath is employed comprising acid dyes to which a combination of reagents (e.g. ammonium sulphate and caustic soda) is added that is adapted to impart to the bath an initial alkaline pH and to lower the pH by elimination of volatile bases, at least at the final heating temperatures, and in that the bath is heated until final temperatures between 60.degree. C. and 80.degree. C. are attained.
REFERENCES:
patent: 3281201 (1966-10-01), Mautner et al.
patent: 3980428 (1976-09-01), Fabbri et al.
patent: 4063877 (1977-12-01), Elliot et al.
patent: 4252531 (1981-02-01), Daeuble et al.
Magni Eugenio
Pernetti Claudio
Clingman A. Lionel
Snia Viscosa Societa' Nazionale Industria Applicazioni Viscosa S
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