Concentrated coloring solutions of a blue tinge based on mixture

Details Concentrated coloring solutions of a blue tinge based on mixture Concentrated coloring solutions of a blue tinge based on mixture

1980-05-21

1981-12-01

Douglas, Winston A.

Bleaching and dyeing; fluid treatment and chemical modification

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

Mixed dyes, noncomplexed

260378, 8521, C09B 116, C07C 9712

Patent

active

043034071

ABSTRACT:
The present invention relates to concentrated solutions in organic solvents of special mixtures of 1-4-dialkyl-amino-anthraquinone dyes particularly useful for the coloring of hydrocarbons. The solutions of this invention are particularly useful for the coloring of hydrocarbons obtained by distillation of crude oil such, for example, as petrol kerosene and gas oil. The invention also includes the preparation of the aforementioned concentrated solutions, including direct preparation of the solutions during the synthesis phase of the anthraquinone dyes.

REFERENCES:
patent: Re16937 (1928-04-01), Iserman et al.
patent: 2211943 (1940-08-01), Wilder
patent: 2925333 (1980-02-01), Thompson
patent: 3076698 (1963-02-01), Orelup
patent: 3164449 (1965-01-01), Buxbaum

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