Water-reducible nigrosine dye compositions

Details Water-reducible nigrosine dye compositions Water-reducible nigrosine dye compositions

1996-04-08

1998-01-13

Einsmann, Margaret

Bleaching and dyeing; fluid treatment and chemical modification

Dye concentrate composition wherein an additional amount of...

8574, 8576, 8611, 8938, C09B 6700

Patent

active

057074054

ABSTRACT:
A water-reducible composition comprises A) between about 20 and about 50 wt % of a water-insoluble nigrosine, B) between about 25 and about 40 wt % of a solvent having a flashpoint of at least about 141.degree. F. (61.degree. C.) and a boiling point of at least about 280.degree. F. (138.degree. C.), and C) between about 20 and about 40 wt % of a non-ionic surfactant, the weight percentages being based on total weight of A), B), and C).
The composition is prepared by dissolving the nigrosine A) in a C.sub.1 -C.sub.3 alkanol to form an alcohol solution, mixing the alcohol solution with the solvent B) and non-ionic surfactant C, and subsequently stripping the C.sub.1 -C.sub.3 alkanol.

REFERENCES:
patent: 4086054 (1978-04-01), Seibert et al.
patent: 5336553 (1994-08-01), Tanaka et al.

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