US 5,032,142 A · Trichromatic azo dye mixtures and their use for dyeing cellulose and leather

Abstract

Trichromatic dye mixtures containing (i) as the orange component at least one dye of the formula ##STR1## or a salt thereof, or, as the yellow component, at least one dye of the formula ##STR2## or a salt thereof, wherein R.sub.1 is hydrogen or C.sub.1-4 alkyl, R.sub.2 is hydrogen, C.sub.1-4 alkyl or substituted C.sub.1-4 alkyl, each of R.sub.3 and R.sub.4 is independently hydrogen, C.sub.1-6 alkyl or substituted C.sub.1-6 alkyl, R.sub.10 is hydrogen or C.sub.2-3 hydroxyalkyl, and R.sub.11 is C.sub.2-3 hydroxyalkyl or 2-(2'-hydroxyethoxy)ethyl, with the proviso that when R.sub.11 is 2-(2'-hydroxyethoxy)ethyl, R.sub.10 must be hydrogen, (ii) as the red component, at least one dye of the formula ##STR3## or a salt thereof, wherein each of D and D' is independently ##STR4## wherein m is 1 or 2, each R.sub.5 is independently hydrogen or C.sub.1-4 alkyl, each R.sub.6 is independently hydrogen, C.sub.1-4 alkyl or C.sub.2-4 hydroxyalkyl, and x is linear or branched C.sub.2-6 alkylene, linear or branched C.sub.3-6 alkylene monosubstituted by hydroxy or linear or branched C.sub.3-6 alkylene disubstituted by hydroxy, with the proviso that the two hydroxy groups are attached to different carbon atoms, and (iii) as the blue component, at least one dye of the formula ##STR5## or a salt thereof, wherein each R.sub.7 is independently hydrogen or C.sub.2-4 hydroxyalkyl, and each R.sub.8 is independently C.sub.2-4 alkyl monosubstituted by hydroxy or --OR.sub.9 or C.sub.2-4 alkyl disubstituted by hydroxy, with the proviso that the two hydroxy groups are attached to different carbon atoms, wherein R.sub.9 is C.sub.1-4 alkyl or C.sub.2-4 hydroxyalkyl; their use for the trichromatic dyeing of hydroxy group-containing and nitrogen-containing organic substrates, especially natural and regenerated cellulose and leather, using conventional dyeing processes and substrates dyed therewith.

Claims20

Dependent claims

A trichromatic dye mixture consisting essentially of

(i) as the orange component,
at least one dye of the formula ##STR15## or a salt thereof, or, as the yellow component,
at least one dye of the formula ##STR16## or a salt thereof, wherein
R.sub.1 is hydrogen or C.sub.1-4 alkyl,
R.sub.2 is hydrogen, C.sub.1-4 alkyl or substituted C.sub.1-4 alkyl,
each of R.sub.3 and R.sub.4 is independently hydrogen, C.sub.1-6 alkyl or substituted C.sub.1-6 alkyl,
R.sub.10 is hydrogen or C.sub.2-3 hydroxyalkyl, and
R.sub.11 is C.sub.2-3 hydroxyalkyl or 2-(2'-hydroxyethoxy)ethyl, with the proviso that when R.sub.11 is 2-(2'-hydroxyethoxy)ethyl, R.sub.10 must be hydrogen,
(ii) as the red component,
at least one dye of the formula ##STR17## or a salt thereof, wherein each of D and D' is independently ##STR18## wherein m is 1 or 2, each R.sub.5 is independently hydrogen or C.sub.1-4 alkyl,
each R.sub.6 is independently hydrogen, C.sub.1-4 alkyl or C.sub.2-4 hydroxyalkyl, and
X is linear or branched C.sub.2-6 alkylene, linear or branched C.sub.3-6 alkylene monosubstituted by hydroxy or linear or branched C.sub.3-6 alkylene disubstituted by hydroxy, with the proviso that the two hydroxy groups are attached to different carbon atoms, and
(iii) as the blue component,
at least one dye of the formula ##STR19## or a salt thereof, wherein
each R.sub.7 is independently hydrogen or C.sub.2-4 hydroxyalkyl, and
each R.sub.8 is independently C.sub.2-4 alkyl monosubstituted by hydroxy or --OR.sub.9 or C.sub.2-4 alkyl disubstituted by hydroxy, with the proviso that the two hydroxy groups are attached to different carbon atoms,
wherein R.sub.9 is C.sub.1-4 alkyl or C.sub.2-4 hydroxyalkyl said trichromatic dye mixture containing, per 100 parts by weight of the total amount of Components (i), (ii), and (iii), 25-65 parts by weight of Component (i) 3-35 parts by weight of Component (ii) and 20-70 parts by weight of Component (iii).

14 more elements

A process for the trichromatic dyeing of an hydroxy group-containing organic substrate with a fiber-reactive dye mixture comprising applying to an hydroxy group-containing organic substrate

(i) as the orange component,
at least one dye of the formula ##STR25## or a salt thereof, or, as the yellow component,
at least one dye of the formula ##STR26## or a salt thereof, wherein
R.sub.1 is hydrogen or C.sub.1-4 alkyl,
R.sub.2 is hydrogen, C.sub.1-4 alkyl or substituted C.sub.1-4 alkyl,
each of R.sub.3 and R.sub.4 is independently hydrogen, C.sub.1-6 alkyl or substituted C.sub.1-6 alkyl,
R.sub.10 is hydrogen or C.sub.2-3 hydroxyalkyl, and
R.sub.11 is C.sub.2-3 hydroxyalkyl or 2-(2'-hydroxyethoxy)ethyl, with the proviso that when R.sub.11 is 2-(2'-hydroxyethoxy)ethyl, R.sub.10 must be hydrogen,
(ii) as the red component,
at least one dye of the formula ##STR27## or a salt thereof, wherein each of D and D' is independently ##STR28## wherein m is 1 or 2, each R.sub.5 is independently hydrogen or C.sub.1-4 alkyl,
each R.sub.6 is independently hydrogen, C.sub.1-4 alkyl or C.sub.2-4 hydroxyalkyl, and
X is linear or branched C.sub.2-6 alkylene, linear or branched C.sub.3-6 alkylene monosubstituted by hydroxy or linear or branched C.sub.3-6 alkylene disubstituted by hydroxy, with the proviso that the two hydroxy groups are attached to different carbon atoms, and
(iii) as the blue component,
at least one dye of the formula ##STR29## or a salt thereof, wherein
each R.sub.7 is independently hydrogen or C.sub.2-4 hydroxyalkyl, and
each R.sub.8 is independently C.sub.2-4 alkyl monosubstituted by hydroxy or --OR.sub.9 or C.sub.2-4 alkyl disubstituted by hydroxy, with the proviso that the two hydroxy groups are attached to different carbon atoms,
wherein R.sub.9 is C.sub.1-4 alkyl or C.sub.2-4 hydroxyalkyl said fiber-reactive dye mixture containing, per 100 parts by weight of the total amounts of Components (i), (ii) and (iii), 25-65 parts by weight of Component (i), 3-35 parts by weight of Component (ii) and 20-70 parts by weight of Component (iii).

14 more elements

Dependencies are inferred from the claim text.

Trichromatic azo dye mixtures and their use for dyeing cellulose and leather

Life of this patent

Trichromatic azo dye mixtures and their use for dyeing cellulose and leather

Life of this patent

Abstract

Claims20