Process for the improvement of dyeing properties of pigments of

Details Process for the improvement of dyeing properties of pigments of Process for the improvement of dyeing properties of pigments of

1977-09-28

1978-12-05

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

260376, 260384, C09B 100, C07C 4968

Patent

active

041283961

ABSTRACT:
Process for the improvement of dyeing properties of pigments of the anilino and arylmercapto anthraquinone series for bulk dyeing linear polyesters by halogenation of unhalogenated or lower halogenated compounds of the formula ##STR1## WHEREIN A is an anthraquinoidal radical being free from nitro groups, X is --NH-- or --S--, n is a number of 1 to 4 and R.sub.1 to R.sub.5 are hydrogen, halogen, alkyl, alkoxy, aryloxy, arylcarbonyl or arylsulphonyl.

REFERENCES:
patent: 2226909 (1940-12-01), Peter
patent: 3507606 (1970-04-01), Hildreth et al.
patent: 3785766 (1974-01-01), Botros
patent: 3840567 (1974-10-01), Genta
patent: 3975410 (1976-08-01), Wick et al.

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