High strength, storage stable, anthraquinone blue dye solutions

Details High strength, storage stable, anthraquinone blue dye solutions High strength, storage stable, anthraquinone blue dye solutions

1998-05-15

1999-05-11

Einsmann, Margaret

Bleaching and dyeing; fluid treatment and chemical modification

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

Mixed dyes, noncomplexed

8602, D06P1/20

Patent

active

059023589

ABSTRACT:
The present invention provides a dye solution of anthraquinone blue dyes in a non-polar organic solvent, which dyes are a mixture of dyes of the general formulae: ##STR1## where the Rs on each compound are selected from the group consisting of 2-ethylhexyl, mixed amyl, n-butyl and methyl, and wherein said dye mixture is the reaction product of quinizarin and/or leuco quinizarin and between about 15 and about 35 mole % of each of 2-ethylhexylamine, n-butylamine, amylamine and methylamine. The dye solutions, at high concentrations, are stable at low temperatures. These dye solutions also provide high tinctorial strength.

REFERENCES:
patent: 3164449 (1965-01-01), Bauxbaum
patent: 3597254 (1971-08-01), Graser et al.
patent: 4303407 (1981-12-01), Marangelli et al.

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