Process for the fixation of organic dyestuffs on materials havin

Details Process for the fixation of organic dyestuffs on materials havin Process for the fixation of organic dyestuffs on materials havin

1977-05-11

1978-10-03

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 1D, 8 1XA, 8 21C, 8 25, 8 46, 8 542, 260308B, C09B 2700, C07D24900, D06M 1338

Patent

active

041181867

ABSTRACT:
A process for the fixation of organic dyestuffs on materials having a fibrous structure had been found, in which an organic dyestuff containing one or several groups of the formula (I) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represent a non-ionic, anionic or cationic substituent, with the exception of a primary or secondary amino group or the salts thereof, is applied in dissolved form onto said materials and subsequently subjected to the action of nitrous acid. The process yields fiber materials on which active substances, such as dyestuffs, brighteners, mothproofing agents, water-repellent agents, etc., are fixed fast; the novel process is especially and advantageously suitable in combination with the ice-color technique.

REFERENCES:
patent: 3639431 (1972-02-01), McTeer et al.
Booth, G., "Phthalocyanines"in Venkataraman's "The Chemistry of Synthetic Dyes", vol. V, (Academic Press, 1971), p. 263.
Krasovitskii et al., Chem. Abs., 1953, 47, 12319f.
Benson, F. R., et al., Chemical Reviews, 1956, 46, p. 41.

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