Process for dyeing paper

Details Process for dyeing paper Process for dyeing paper

1983-09-09

1985-05-07

Tungol, Maria Parrish

Bleaching and dyeing; fluid treatment and chemical modification

Dye or potential dye composition, additive, treatment,...

Azo, acridone, or quinone dye

8686, 8919, 8527, 162162, D06P 110, D06P 360, D21H 146

Patent

active

045155992

ABSTRACT:
A process for dyeing paper which comprises the use of dyes of the formula ##STR1## wherein R is hydrogen, hydroxyl or amino, X is the azoxy or azo group, and n is 1 or 2, and the bonds of the complexing oxygen atom in the .alpha.-position and of the azo group in the .beta.-position at the naphthalene nuclei are mutually interchangeable. Dyeings of good wetfastness and lightfastness are obtained.

REFERENCES:
patent: 2803624 (1957-08-01), Byland
patent: 2929673 (1960-03-01), Schucan
patent: 3211566 (1965-10-01), Patton
patent: 3537807 (1970-11-01), Streck
patent: 3894836 (1975-07-01), Frei

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